The Scientific World Journal: Mathematical Analysis
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The latest articles from Hindawi Publishing Corporation
© 2015 , Hindawi Publishing Corporation . All rights reserved.

Recent Theories and Applications in Approximation Theory
Wed, 08 Apr 2015 07:00:13 +0000
http://www.hindawi.com/journals/tswj/2015/598279/
Fazlollah Soleymani, Predrag S. Stanimirović, Juan R. Torregrosa, Hassan Saberi Nik, and Emran Tohidi
Copyright © 2015 Fazlollah Soleymani et al. All rights reserved.

The Mixed Finite Element Multigrid Method for Stokes Equations
Tue, 07 Apr 2015 13:09:57 +0000
http://www.hindawi.com/journals/tswj/2015/460421/
The stable finite element discretization of the Stokes problem produces a symmetric indefinite system of linear algebraic equations. A variety of iterative solvers have been proposed for such systems in an attempt to construct efficient, fast, and robust solution techniques. This paper investigates one of such iterative solvers, the geometric multigrid solver, to find the approximate solution of the indefinite systems. The main ingredient of the multigrid method is the choice of an appropriate smoothing strategy. This study considers the application of different smoothers and compares their effects in the overall performance of the multigrid solver. We study the multigrid method with the following smoothers: distributed Gauss Seidel, inexact Uzawa, preconditioned MINRES, and BraessSarazin type smoothers. A comparative study of the smoothers shows that the BraessSarazin smoothers enhance good performance of the multigrid method. We study the problem in a twodimensional domain using stable HoodTaylor pair of finite rectangular elements. We also give the main theoretical convergence results. We present the numerical results to demonstrate the efficiency and robustness of the multigrid method and confirm the theoretical results.
K. Muzhinji, S. Shateyi, and S. S. Motsa
Copyright © 2015 K. Muzhinji et al. All rights reserved.

On a Modified Form of NavierStokes Equations for ThreeDimensional Flows
Mon, 30 Mar 2015 07:58:04 +0000
http://www.hindawi.com/journals/tswj/2015/692494/
A rephrased form of NavierStokes equations is performed for incompressible, threedimensional, unsteady flows according to Eulerian formalism for the fluid motion. In particular, we propose a geometrical method for the elimination of the nonlinear terms of these fundamental equations, which are expressed in true vector form, and finally arrive at an equivalent system of three semilinear first order PDEs, which hold for a threedimensional rectangular Cartesian coordinate system. Next, we present the related variational formulation of these modified equations as well as a general type of weak solutions which mainly concern Sobolev spaces.
J. Venetis
Copyright © 2015 J. Venetis. All rights reserved.

On a Cubically Convergent Iterative Method for Matrix Sign
Sun, 29 Mar 2015 08:32:23 +0000
http://www.hindawi.com/journals/tswj/2015/964257/
We propose an iterative method for finding matrix sign function. It is shown that the scheme has global behavior with cubical rate of convergence. Examples are included to show the applicability and efficiency of the proposed scheme and its reciprocal.
M. Sharifi, S. Karimi Vanani, F. Khaksar Haghani, M. Arab, and S. Shateyi
Copyright © 2015 M. Sharifi et al. All rights reserved.

New Iterative Method for Fractional Gas Dynamics and Coupled Burger’s Equations
Thu, 26 Mar 2015 08:46:03 +0000
http://www.hindawi.com/journals/tswj/2015/153124/
This paper presents the approximate analytical solutions to solve the nonlinear gas dynamics and coupled
Burger’s equations with fractional time derivative. By using initial values, the explicit solutions of the equations are solved by
using a reliable algorithm. Numerical results show that the new iterative method is easy to implement and accurate when applied to timefractional partial differential equations.
Mohamed S. Alluhaibi
Copyright © 2015 Mohamed S. Alluhaibi. All rights reserved.

Geometric Construction of EighthOrder Optimal Families of Ostrowski’s Method
Thu, 26 Mar 2015 08:06:08 +0000
http://www.hindawi.com/journals/tswj/2015/614612/
Based on wellknown fourthorder Ostrowski’s method, we proposed many new interesting optimal families of eighthorder multipoint methods without memory for obtaining simple roots. Its geometric construction consists in approximating at zn in such a way that its average with the known tangent slopes at xn and yn is the same as the known weighted average of secant slopes and then we apply weight function approach. The adaptation of this strategy increases the convergence order of Ostrowski's method from four to eight and its efficiency index from 1.587 to 1.682. Finally, a number of numerical examples are also proposed to illustrate their accuracy by comparing them with the new existing optimal eighthorder methods available in the literature. It is found that they are very useful in high precision computations. Further, it is also noted that larger basins of attraction belong to our methods although the other methods are slow and have darker basins while some of the methods are too sensitive upon the choice of the initial value.
Ramandeep Behl and S. S. Motsa
Copyright © 2015 Ramandeep Behl and S. S. Motsa. All rights reserved.

Semilocal Convergence Theorem for the InverseFree Jarratt Method under New Hölder Conditions
Wed, 25 Mar 2015 09:38:37 +0000
http://www.hindawi.com/journals/tswj/2015/346571/
Under the new Hölder conditions, we consider the convergence analysis of the inversefree Jarratt method in Banach space which is used to solve the nonlinear operator equation. We establish a new semilocal convergence theorem for the inversefree Jarratt method and present an error estimate. Finally, three examples are provided to show the application of the theorem.
Yueqing Zhao, Rongfei Lin, Zdenek Šmarda, Yasir Khan, Jinbiao Chen, and Qingbiao Wu
Copyright © 2015 Yueqing Zhao et al. All rights reserved.

On a DerivativeFree Variant of King’s Family with Memory
Wed, 25 Mar 2015 07:38:33 +0000
http://www.hindawi.com/journals/tswj/2015/514075/
The aim of this paper is to construct a method with memory according to King’s family of methods without memory for nonlinear equations. It is proved that the proposed method possesses higher Rorder of convergence using the same number of functional evaluations as King’s family. Numerical experiments are given to illustrate the performance of the constructed scheme.
M. Sharifi, S. Karimi Vanani, F. Khaksar Haghani, M. Arab, and S. Shateyi
Copyright © 2015 M. Sharifi et al. All rights reserved.

Stabilities for Nonisentropic EulerPoisson Equations
Mon, 16 Mar 2015 14:30:46 +0000
http://www.hindawi.com/journals/tswj/2015/494707/
We establish the stabilities and blowup results for the nonisentropic EulerPoisson equations by the energy method. By analysing the second inertia, we show that the classical solutions of the system with attractive forces blow up in finite time in some special dimensions when the energy is negative. Moreover, we obtain the stabilities results for the system in the cases of attractive and repulsive forces.
Ka Luen Cheung and Sen Wong
Copyright © 2015 Ka Luen Cheung and Sen Wong. All rights reserved.

A Mathematical Model for the Flow of a Casson Fluid due to Metachronal Beating of Cilia in a Tube
Thu, 19 Feb 2015 08:15:30 +0000
http://www.hindawi.com/journals/tswj/2015/487819/
A mathematical model is developed to study the transport mechanism of a Casson fluid flow inspired by the metachronal coordination between the beating cilia in a cylindrical tube. A twodimensional system of nonlinear equations governing the flow problem is formulated by using axisymmetric cylindrical coordinates and then simplified by employing the long wavelength and low Reynolds number assumptions. Exact solutions are derived for the velocity components, the axial pressure gradient, and the stream function. However, the expressions for the pressure rise and the volume flow rate are evaluated numerically. The features of the flow characteristics such as pumping and trapping are illustrated and discussed with the help of graphs. It is observed that the volume flow rate is influenced significantly by the width of plug flow region as well as the cilia length parameter . The analysis is also applied and compared with the estimated value of the volume flow rate of epididymal fluid in the ductus efferentes of the human male reproductive tract.
A. M. Siddiqui, A. A. Farooq, and M. A. Rana
Copyright © 2015 A. M. Siddiqui et al. All rights reserved.

Recent Developments on Sequence Spaces and Compact Operators with Applications
Thu, 29 Jan 2015 11:26:10 +0000
http://www.hindawi.com/journals/tswj/2015/410652/
S. A. Mohiuddine, M. Mursaleen, Józef Banaś, Suthep Suantai, and Abdullah Alotaibi
Copyright © 2015 S. A. Mohiuddine et al. All rights reserved.

A General Class of Derivative Free Optimal Root Finding Methods Based on Rational Interpolation
Wed, 28 Jan 2015 12:31:11 +0000
http://www.hindawi.com/journals/tswj/2015/934260/
We construct a new general class of derivative free point iterative methods of optimal order of convergence using rational interpolant. The special cases of this class are obtained. These methods do not need Newton’s iterate in the …first step of their iterative schemes. Numerical computations are presented to show that the new methods are efficient and can be seen as better alternates.
Fiza Zafar, Nusrat Yasmin, Saima Akram, and MoinudDin Junjua
Copyright © 2015 Fiza Zafar et al. All rights reserved.

Some New Sets of Sequences of Fuzzy Numbers with Respect to the Partial Metric
Wed, 28 Jan 2015 12:18:19 +0000
http://www.hindawi.com/journals/tswj/2015/735703/
In this paper, we essentially deal with
KötheToeplitz duals of fuzzy level sets defined using a partial metric. Since the utilization of Zadeh’s
extension principle is quite difficult in practice, we prefer the idea of level sets in order to construct
some classical notions. In this paper, we present the sets of bounded, convergent, and null series and the
set of sequences of bounded variation of fuzzy level sets, based on the partial metric. We examine the
relationships between these sets and their classical forms and give some properties including definitions,
propositions, and various kinds of partial metric spaces of fuzzy level sets. Furthermore, we study some of
their properties like completeness and duality. Finally, we obtain the KötheToeplitz duals of fuzzy level
sets with respect to the partial metric based on a partial ordering.
Uğur Kadak and Muharrem Ozluk
Copyright © 2015 Uğur Kadak and Muharrem Ozluk. All rights reserved.

Relation of the Cyclotomic Equation with the Harmonic and Derived Series
Thu, 22 Jan 2015 06:20:19 +0000
http://www.hindawi.com/journals/tswj/2015/950521/
We associate some (old) convergent series related to definite integrals with the cyclotomic equation , for several natural numbers m; for example, for , leads to . In some cases, we express the results in terms of the Dirichlet characters. Generalizations for arbitrary m are well defined but do imply integrals and/or series summations rather involved.
Luis J. Boya and Cristian Rivera
Copyright © 2015 Luis J. Boya and Cristian Rivera. All rights reserved.

Almost Periodic Solutions of BAM Neural Networks with TimeVarying Delays on Time Scales
Mon, 19 Jan 2015 09:33:40 +0000
http://www.hindawi.com/journals/tswj/2015/727329/
On a new type of almost periodic time scales, a class of BAM neural networks is considered. By employing a fixed point theorem and differential inequality techniques,
some sufficient conditions ensuring the existence and global exponential stability of almost periodic solutions for this class of networks with timevarying delays are established. Two examples are given to show the effectiveness of the proposed method and results.
Yongkun Li, Lili Zhao, and Li Yang
Copyright © 2015 Yongkun Li et al. All rights reserved.

The Diophantine Equation
Wed, 14 Jan 2015 06:41:23 +0000
http://www.hindawi.com/journals/tswj/2015/306590/
Let be a fixed odd prime. Using certain results of exponential Diophantine equations, we prove that (i) if , then the equation has no positive integer solutions ; (ii) if , then the equation has only the solutions , where is an odd prime with ; (iii) if and , then the equation has at most two positive integer solutions .
Lan Qi and Xiaoxue Li
Copyright © 2015 Lan Qi and Xiaoxue Li. All rights reserved.

An Existence Theorem for Fractional Difference Inclusions with Nonlocal Substrip Type Boundary Conditions
Mon, 05 Jan 2015 13:42:35 +0000
http://www.hindawi.com/journals/tswj/2015/424306/
By employing a nonlinear alternative for contractive maps, we investigate the existence of solutions for a boundary value problem of fractional difference inclusions with nonlocal substrip type boundary conditions. The main result is illustrated with the aid of an example.
Ahmed Alsaedi, Sotiris K. Ntouyas, and Bashir Ahmad
Copyright © 2015 Ahmed Alsaedi et al. All rights reserved.

Fixed Point Theorems for Hybrid Mappings
Mon, 05 Jan 2015 13:08:24 +0000
http://www.hindawi.com/journals/tswj/2015/938165/
We obtain some fixed point theorems for two pairs of hybrid mappings using hybrid tangential property and quadratic type contractive condition. Our results generalize some results by Babu and Alemayehu and those contained therein. In the sequel, we introduce a new notion to generalize occasionally weak compatibility. Moreover, two concrete examples are established to illuminate the generality of our results.
Maria Samreen, Tayyab Kamran, and Erdal Karapinar
Copyright © 2015 Maria Samreen et al. All rights reserved.

Dynamics of Nonlinear Systems
Mon, 22 Dec 2014 11:25:07 +0000
http://www.hindawi.com/journals/tswj/2014/246418/
Maoan Han, Zhen Jin, Yonghui Xia, and Haomin Zhou
Copyright © 2014 Maoan Han et al. All rights reserved.

Coefficient Bounds for Some Families of Starlike and Convex Functions of Reciprocal Order
Mon, 24 Nov 2014 12:47:01 +0000
http://www.hindawi.com/journals/tswj/2014/989640/
The aim of the present paper is to investigate coefficient estimates, FeketeSzegő inequality, and upper bound of third Hankel determinant for some families of starlike and convex functions of reciprocal order.
Muhammad Arif, Maslina Darus, Mohsan Raza, and Qaiser Khan
Copyright © 2014 Muhammad Arif et al. All rights reserved.

Numerical Solutions of the Nonlinear FractionalOrder Brusselator System by Bernstein Polynomials
Mon, 17 Nov 2014 06:45:45 +0000
http://www.hindawi.com/journals/tswj/2014/257484/
In this paper we propose the Bernstein polynomials to achieve the numerical solutions of nonlinear fractionalorder chaotic system known by fractionalorder Brusselator system. We use operational matrices of fractional integration and multiplication of Bernstein polynomials, which turns the nonlinear fractionalorder Brusselator system to a system of algebraic equations. Two illustrative examples are given in order to demonstrate the accuracy and simplicity of the proposed techniques.
Hasib Khan, Hossein Jafari, Rahmat Ali Khan, Haleh Tajadodi, and Sarah Jane Johnston
Copyright © 2014 Hasib Khan et al. All rights reserved.

Numerical Algorithm Based on HaarSinc Collocation Method for Solving the Hyperbolic PDEs
Sun, 16 Nov 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/340752/
The present study investigates the HaarSinc collocation method for the solution of the hyperbolic partial telegraph equations. The advantages of this technique are that not only is the convergence rate of Sinc approximation exponential but the computational speed also is high due to the use of the Haar operational matrices. This technique is used to convert the problem to the solution of linear algebraic equations via expanding the required approximation based on the elements of Sinc functions in space and Haar functions in time with unknown coefficients. To analyze the efficiency, precision, and performance of the proposed method, we presented four examples through which our claim was confirmed.
A. Pirkhedri, H. H. S. Javadi, and H. R. Navidi
Copyright © 2014 A. Pirkhedri et al. All rights reserved.

On Some Growth Properties of Entire Functions Using Their Maximum Moduli Focusing th Relative Order
Mon, 03 Nov 2014 06:40:25 +0000
http://www.hindawi.com/journals/tswj/2014/164130/
We discuss some growth rates of composite entire functions
on the basis of the definition of relative th order (relative th lower order) with respect to another entire function which improve some
earlier results of Roy (2010) where and are any two positive integers.
Luis Manuel Sanchez Ruiz, Sanjib Kumar Datta, Tanmay Biswas, and Golok Kumar Mondal
Copyright © 2014 Luis Manuel Sanchez Ruiz et al. All rights reserved.

Linear Discrete Pursuit Game with Phase Constraints
Thu, 30 Oct 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/435103/
We consider a linear pursuit game of one pursuer and one evader whose motions are described by differenttype linear discrete systems. Position of the evader satisfies phase constraints: , where is a subset of . We considered two cases: (1) controls of the players satisfy geometric constraints, and (2) controls of the players satisfy total constraints. Terminal set is a subset of and it is assumed to have a nonempty interior. Game is said to be completed if at some step ; thus, the evader has not the right to leave set . To construct the control of the pursuer, at each step , we use the value of the control parameter of the evader at the step . We obtain sufficient conditions of completion of pursuit from certain initial positions of the players in finite time interval and construct a control for the pursuer in explicit form.
Asqar Raxmanov and Gafurjan Ibragimov
Copyright © 2014 Asqar Raxmanov and Gafurjan Ibragimov. All rights reserved.

Multistage Spectral Relaxation Method for Solving the Hyperchaotic Complex Systems
Thu, 16 Oct 2014 13:18:52 +0000
http://www.hindawi.com/journals/tswj/2014/943293/
We present a pseudospectral method application for solving the hyperchaotic complex systems. The proposed method, called the multistage spectral relaxation method (MSRM) is based on a technique of extending GaussSeidel type relaxation ideas to systems of nonlinear differential equations and using the Chebyshev pseudospectral methods to solve the resulting system on a sequence of multiple intervals. In this new application, the MSRM is used to solve famous hyperchaotic complex systems such as hyperchaotic complex Lorenz system and the complex permanent magnet synchronous motor. We compare this approach to the RungeKutta based ode45 solver to show that the MSRM gives accurate results.
Hassan Saberi Nik and Paulo Rebelo
Copyright © 2014 Hassan Saberi Nik and Paulo Rebelo. All rights reserved.

New Formulae for the HighOrder Derivatives of Some Jacobi Polynomials: An Application to Some HighOrder Boundary Value Problems
Tue, 14 Oct 2014 07:04:39 +0000
http://www.hindawi.com/journals/tswj/2014/456501/
This paper is concerned with deriving some new formulae expressing explicitly the highorder derivatives of Jacobi polynomials whose parameters difference is one or two of any degree and of any order in terms of their corresponding Jacobi polynomials. The derivatives formulae for Chebyshev polynomials of third and fourth kinds of any degree and of any order in terms of their corresponding Chebyshev polynomials are deduced as special cases. Some new reduction formulae for summing some terminating hypergeometric functions of unit argument are also deduced. As an application, and with the aid of the new introduced derivatives formulae, an algorithm for solving special sixthorder boundary value problems are implemented with the aid of applying Galerkin method. A numerical example is presented hoping to ascertain the validity and the applicability of the proposed algorithms.
W. M. AbdElhameed
Copyright © 2014 W. M. AbdElhameed. All rights reserved.

On the General Dedekind Sums and TwoTerm Exponential Sums
Tue, 14 Oct 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/146926/
We use the analytic methods and the properties of Gauss sums to study the computational problem of one kind hybrid mean value involving the general Dedekind sums and the twoterm exponential sums, and give an interesting computational formula for it.
Junli Zhang and Wenpeng Zhang
Copyright © 2014 Junli Zhang and Wenpeng Zhang. All rights reserved.

Water Wave Solutions of the Coupled System ZakharovKuznetsov and Generalized Coupled KdV Equations
Sun, 12 Oct 2014 14:21:02 +0000
http://www.hindawi.com/journals/tswj/2014/724759/
An analytic study was conducted on coupled partial differential equations. We formally derived new solitary wave solutions of generalized coupled system of ZakharovKuznetsov (ZK) and KdV equations by using modified extended tanh method. The traveling wave solutions for each generalized coupled system of ZK and KdV equations are shown in form of periodic, dark, and bright solitary wave solutions. The structures of the obtained solutions are distinct and stable.
A. R. Seadawy and K. ElRashidy
Copyright © 2014 A. R. Seadawy and K. ElRashidy. All rights reserved.

Existence of Tripled Fixed Points for a Class of Condensing Operators in Banach Spaces
Sun, 14 Sep 2014 12:48:26 +0000
http://www.hindawi.com/journals/tswj/2014/541862/
We give some results concerning the existence of
tripled fixed points for a class of condensing operators in Banach spaces. Further, as an application, we study the existence of solutions for a general
system of nonlinear integral equations.
Vatan Karakaya, Nour El Houda Bouzara, Kadri Doğan, and Yunus Atalan
Copyright © 2014 Vatan Karakaya et al. All rights reserved.

Certain Inequalities Involving Generalized ErdélyiKober Fractional Integral Operators
Thu, 11 Sep 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/174126/
In recent years, a remarkably large number of inequalities involving the fractional integral operators have been investigated in the literature by many authors. Here, we aim to present some new fractional integral inequalities involving generalized ErdélyiKober fractional integral operator due to Gaulué, whose special cases are shown to yield corresponding inequalities associated with Kober type fractional integral operators. The cases of synchronous functions as well as of functions bounded by integrable functions are considered.
Praveen Agarwal, Soheil Salahshour, Sotiris K. Ntouyas, and Jessada Tariboon
Copyright © 2014 Praveen Agarwal et al. All rights reserved.

Modified Fractional Variational Iteration Method for Solving the Generalized TimeSpace Fractional Schrödinger Equation
Thu, 04 Sep 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/964643/
Based on He’s variational iteration method idea, we modified the fractional variational iteration method and applied it to construct some approximate solutions of the generalized timespace fractional Schrödinger equation (GFNLS). The fractional derivatives are described in the sense of Caputo. With the help of symbolic computation, some approximate solutions and their iterative structure of the GFNLS are investigated. Furthermore, the approximate iterative series and numerical results show that the modified fractional variational iteration method is powerful, reliable, and effective when compared with some classic traditional methods such as homotopy analysis method, homotopy perturbation method, adomian decomposition method, and variational iteration method in searching for approximate solutions of the Schrödinger equations.
Baojian Hong and Dianchen Lu
Copyright © 2014 Baojian Hong and Dianchen Lu. All rights reserved.

On a New ThreeStep Class of Methods and Its Acceleration for Nonlinear Equations
Wed, 03 Sep 2014 07:33:03 +0000
http://www.hindawi.com/journals/tswj/2014/134673/
A class of derivativefree methods without memory for approximating a simple zero of a nonlinear equation is presented. The proposed class uses four function evaluations per iteration with convergence order eight. Therefore, it is an optimal threestep scheme without memory based on KungTraub conjecture. Moreover, the proposed class has an accelerator parameter with the property that it can increase the convergence rate from eight to twelve without any new functional evaluations. Thus, we construct a with memory method that increases considerably efficiency index from to . Illustrations are also included to support the underlying theory.
T. Lotfi, K. Mahdiani, Z. Noori, F. Khaksar Haghani, and S. Shateyi
Copyright © 2014 T. Lotfi et al. All rights reserved.

Global Practical Tracking by Output Feedback for Nonlinear Systems with Unknown Growth Rate and Time Delay
Wed, 03 Sep 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/713081/
This paper is the further investigation of work of Yan and Liu, 2011, and considers the global practical tracking problem by output feedback for a class of uncertain nonlinear systems with not only unmeasured states dependent growth but also timevarying time delay. Compared with the closely related works, the remarkableness of the paper is that the timevarying time delay and unmeasurable states are permitted in the system nonlinear growth. Motivated by the related tracking results and flexibly using the ideas and techniques of universal control and dead zone, an adaptive outputfeedback tracking controller is explicitly designed with the help of a new LyapunovKrasovskii functional, to make the tracking error prescribed arbitrarily small after a finite time while keeping all the closedloop signals bounded. A numerical example demonstrates the effectiveness of the results.
Xuehua Yan and Xinmin Song
Copyright © 2014 Xuehua Yan and Xinmin Song. All rights reserved.

On the Convergence and Stability Results for a New General Iterative Process
Tue, 02 Sep 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/852475/
We put forward a new general iterative process. We prove a convergence result as well as a stability result regarding this new iterative process for weak contraction operators.
Kadri Doğan and Vatan Karakaya
Copyright © 2014 Kadri Doğan and Vatan Karakaya. All rights reserved.

A New Look at the Coefficients of a Reciprocal Generating Function
Thu, 28 Aug 2014 06:33:23 +0000
http://www.hindawi.com/journals/tswj/2014/613947/
We study a special property of free cumulants. We prove that coefficients of a reciprocal generating function correspond to “free cumulants with the first two elements in the same block.”
Wiktor Ejsmont
Copyright © 2014 Wiktor Ejsmont. All rights reserved.

On the Maximum Estrada Index of 3Uniform Linear Hypertrees
Thu, 28 Aug 2014 05:52:41 +0000
http://www.hindawi.com/journals/tswj/2014/637865/
For a simple hypergraph on vertices, its Estrada index is defined as , where are the eigenvalues of its adjacency matrix. In this paper, we determine the unique 3uniform linear hypertree with the maximum Estrada index.
Faxu Li, Liang Wei, Jinde Cao, Feng Hu, and Haixing Zhao
Copyright © 2014 Faxu Li et al. All rights reserved.

Spectral Analysis of the Bounded Linear Operator in the Reproducing Kernel Space
Thu, 28 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/691461/
We first introduce some related definitions of the bounded linear operator in the reproducing kernel space . Then we show spectral analysis of and derive several property theorems.
Lihua Guo, Songsong Li, Boying Wu, and Dazhi Zhang
Copyright © 2014 Lihua Guo et al. All rights reserved.

On a Subclass of Meromorphic ClosetoConvex Functions
Thu, 28 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/806168/
The main purpose of this paper is to introduce and investigate a certain subclass of meromorphic closetoconvex functions. Such results as coefficient inequalities, convolution property, inclusion relationship, distortion property, and radius of meromorphic convexity are derived.
MingLiang Li, Lei Shi, and ZhiGang Wang
Copyright © 2014 MingLiang Li et al. All rights reserved.

On a New Iterative Scheme without Memory with Optimal Eighth Order
Thu, 28 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/727490/
The purpose of this paper is to derive and discuss a threestep iterative expression for solving nonlinear equations. In fact, we derive a derivativefree form for one of the existing optimal eighthorder methods and preserve its convergence order. Theoretical results will
be upheld by numerical experiments.
M. Sharifi, S. Karimi Vanani, F. Khaksar Haghani, M. Arab, and S. Shateyi
Copyright © 2014 M. Sharifi et al. All rights reserved.

On Local Convergence Analysis of Inexact Newton Method for Singular Systems of Equations under Majorant Condition
Thu, 28 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/498016/
We present a local convergence analysis of inexact Newton method for solving singular systems of equations. Under the hypothesis that the derivative of the function associated with the singular systems satisfies a majorant condition, we obtain that the method is well defined and converges. Our analysis provides a clear relationship between the majorant function and the function associated with the singular systems. It also allows us to obtain an estimate of convergence ball for inexact Newton method and some important special cases.
Fangqin Zhou
Copyright © 2014 Fangqin Zhou. All rights reserved.

One Adaptive Synchronization Approach for FractionalOrder Chaotic System with FractionalOrder
Wed, 27 Aug 2014 08:52:46 +0000
http://www.hindawi.com/journals/tswj/2014/490364/
Based on a new stability result of equilibrium point in nonlinear fractionalorder systems for fractionalorder lying in , one adaptive synchronization approach is established. The adaptive synchronization for the fractionalorder Lorenz chaotic system with fractionalorder is considered. Numerical simulations show the validity and feasibility of the proposed scheme.
Ping Zhou and Rongji Bai
Copyright © 2014 Ping Zhou and Rongji Bai. All rights reserved.

The Trigonometric Polynomial Like Bernstein Polynomial
Wed, 27 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/174716/
A symmetric basis of trigonometric polynomial space is presented. Based on the basis, symmetric trigonometric polynomial approximants like Bernstein polynomials are constructed. Two kinds of nodes are given to show that the trigonometric polynomial sequence is uniformly convergent. The convergence of the derivative of the trigonometric polynomials is shown. Trigonometric quasiinterpolants of reproducing one degree of trigonometric polynomials are constructed. Some interesting properties of the trigonometric polynomials are given.
Xuli Han
Copyright © 2014 Xuli Han. All rights reserved.

A Bivariate Chebyshev Spectral Collocation Quasilinearization Method for Nonlinear Evolution Parabolic Equations
Wed, 27 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/581987/
This paper presents a new method for solving higher order nonlinear evolution partial differential equations (NPDEs). The method combines quasilinearisation, the Chebyshev spectral collocation method, and bivariate Lagrange interpolation. In this paper, we use the method to solve several nonlinear evolution equations, such as the modified KdVBurgers equation, highly nonlinear modified KdV equation, Fisher's equation, BurgersFisher equation, BurgersHuxley equation, and the FitzhughNagumo equation. The results are compared with known exact analytical solutions from literature to confirm accuracy, convergence, and effectiveness of the method. There is congruence between the numerical results and the exact solutions to a high order of accuracy. Tables were generated to present the order of accuracy of the method; convergence graphs to verify convergence of the method and error graphs are presented to show the excellent agreement between the results from this study and the known results from literature.
S. S. Motsa, V. M. Magagula, and P. Sibanda
Copyright © 2014 S. S. Motsa et al. All rights reserved.

Parameterized HilbertType Integral Inequalities in the Whole Plane
Tue, 19 Aug 2014 07:14:11 +0000
http://www.hindawi.com/journals/tswj/2014/169061/
By the use of the way of real analysis, we estimate the weight functions and give
some new Hilberttype integral inequalities in the whole plane with nonhomogeneous
kernels and multiparameters. The constant factors related to the hypergeometric function
and the beta function are proved to be the best possible. We also consider the
equivalent forms, the reverses, and some particular cases in the homogeneous kernels.
Qiliang Huang, Shanhe Wu, and Bicheng Yang
Copyright © 2014 Qiliang Huang et al. All rights reserved.

An InversionFree Method for Finding Positive Definite Solution of a Rational Matrix Equation
Tue, 19 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/560931/
A new iterative scheme has been constructed for finding minimal solution of a rational matrix equation of the form . The new method is inversionfree per computing step. The convergence of the method has been studied and tested via numerical experiments.
Fazlollah Soleymani, Mahdi Sharifi, Solat Karimi Vanani, Farhad Khaksar Haghani, and Adem Kılıçman
Copyright © 2014 Fazlollah Soleymani et al. All rights reserved.

Analysis of an SEIR Epidemic Model with Saturated Incidence and Saturated Treatment Function
Mon, 18 Aug 2014 13:02:14 +0000
http://www.hindawi.com/journals/tswj/2014/910421/
The dynamics of SEIR epidemic model with saturated incidence rate and saturated treatment function are explored in this paper. The basic reproduction number that determines disease extinction and disease survival is given. The existing threshold conditions of all kinds of the equilibrium points are obtained. Sufficient conditions are established for the existence of backward bifurcation. The local asymptotical stability of equilibrium is verified by analyzing the eigenvalues and using the RouthHurwitz criterion. We also discuss the global asymptotical stability of the endemic equilibrium by autonomous convergence theorem. The study indicates that we should improve the efficiency and enlarge the capacity of the treatment to control the spread of disease. Numerical simulations are presented to support and complement the theoretical findings.
Jinhong Zhang, Jianwen Jia, and Xinyu Song
Copyright © 2014 Jinhong Zhang et al. All rights reserved.

Oscillations for Neutral Functional Differential Equations
Mon, 18 Aug 2014 12:33:51 +0000
http://www.hindawi.com/journals/tswj/2014/124310/
We will consider a class of neutral functional differential equations. Some infinite integral conditions for the oscillation of all solutions are derived. Our results extend and improve some of the previous results in the literature.
Fatima N. Ahmed, Rokiah R. Ahmad, Ummul K. S. Din, and Mohd S. M. Noorani
Copyright © 2014 Fatima N. Ahmed et al. All rights reserved.

On Some Approximation Theorems for Power Bounded Operators on Locally Convex Vector Spaces
Mon, 18 Aug 2014 08:32:02 +0000
http://www.hindawi.com/journals/tswj/2014/513162/
This paper deals with the study of some operator inequalities involving the power
bounded operators along with the most known properties and results, in the
more general framework of locally convex vector spaces.
Ludovic Dan Lemle
Copyright © 2014 Ludovic Dan Lemle. All rights reserved.

Existence Results for a System of Coupled Hybrid Fractional Differential Equations
Mon, 18 Aug 2014 06:31:13 +0000
http://www.hindawi.com/journals/tswj/2014/426438/
This paper studies the existence of solutions for a system of coupled hybrid
fractional differential equations with Dirichlet boundary conditions. We make
use of the standard tools of the fixed point theory to establish the main results.
The existence and uniqueness result is elaborated with the aid of an example.
Bashir Ahmad, Sotiris K. Ntouyas, and Ahmed Alsaedi
Copyright © 2014 Bashir Ahmad et al. All rights reserved.

New Conditions for Obtaining the Exact Solutions of the General Riccati Equation
Mon, 18 Aug 2014 05:54:05 +0000
http://www.hindawi.com/journals/tswj/2014/401741/
We propose a direct method for solving the general Riccati equation . We first reduce it into an equivalent equation, and then we formulate the relations between the coefficients functions , and of the equation to obtain an equivalent separable equation from which the previous equation can be solved in closed form. Several examples are presented to demonstrate the efficiency of this method.
Lazhar Bougoffa
Copyright © 2014 Lazhar Bougoffa. All rights reserved.

Stability and Hopf Bifurcation for a Delayed SLBRS Computer Virus Model
Sun, 17 Aug 2014 12:20:13 +0000
http://www.hindawi.com/journals/tswj/2014/373171/
By incorporating the time delay due to the period that computers use antivirus software to clean the virus into the SLBRS model a delayed SLBRS computer virus model is proposed in this paper. The dynamical behaviors which include local stability and Hopf bifurcation are investigated by regarding the delay as bifurcating parameter. Specially, direction and stability of the Hopf bifurcation are derived by applying the normal form method and center manifold theory. Finally, an illustrative example is also presented to testify our analytical results.
Zizhen Zhang and Huizhong Yang
Copyright © 2014 Zizhen Zhang and Huizhong Yang. All rights reserved.

On Fibrations in Bitopological Semigroups
Sun, 17 Aug 2014 12:11:49 +0000
http://www.hindawi.com/journals/tswj/2014/675761/
We extend the path lifting property in homotopy theory for topological spaces to bitopological semigroups and we show and prove its role in the fibration property. We give and prove the relationship between the fibration property and an approximate fibration property. Furthermore, we study the pullback maps for fibrations.
Suliman Dawood and Adem Kılıçman
Copyright © 2014 Suliman Dawood and Adem Kılıçman. All rights reserved.

Generalized Contractive Mappings and Weakly Admissible Pairs in Metric Spaces
Sun, 17 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/941086/
The aim of this paper is to present some coincidence and common fixed
point results for generalized (, )contractive mappings using partially weakly admissibility in the setup of metric space. As an application of our results,
periodic points of weakly contractive mappings are obtained. We also derive certain
new coincidence point and common fixed point theorems in partially ordered metric
spaces. Moreover, some examples are provided here to illustrate the usability of the
obtained results.
N. Hussain, V. Parvaneh, and S. J. Hoseini Ghoncheh
Copyright © 2014 N. Hussain et al. All rights reserved.

Optimal Sixteenth Order Convergent Method Based on QuasiHermite Interpolation for Computing Roots
Tue, 12 Aug 2014 10:55:38 +0000
http://www.hindawi.com/journals/tswj/2014/410410/
We have given a fourstep, multipoint iterative method without memory for solving nonlinear equations. The method is constructed by using quasiHermite interpolation and has order of convergence sixteen. As this method requires four function evaluations and one derivative evaluation at each step, it is optimal in the sense of the Kung and Traub conjecture. The comparisons are given with some other newly developed sixteenthorder methods. Interval Newton’s method is also used for finding the enough accurate initial approximations. Some figures show the enclosure of finitely many zeroes of nonlinear equations in an interval. Basins of attractions show the effectiveness of the method.
Fiza Zafar, Nawab Hussain, Zirwah Fatimah, and Athar Kharal
Copyright © 2014 Fiza Zafar et al. All rights reserved.

Applications of Normal SIterative Method to a Nonlinear Integral Equation
Mon, 11 Aug 2014 11:50:20 +0000
http://www.hindawi.com/journals/tswj/2014/943127/
It has been shown that a normal Siterative method converges to the solution of a mixed type VolterraFredholm functional nonlinear integral equation. Furthermore, a data dependence result for the solution of this integral equation has been proven.
Faik Gürsoy
Copyright © 2014 Faik Gürsoy. All rights reserved.

Convergence Analysis for a Modified SP Iterative Method
Sun, 10 Aug 2014 13:09:59 +0000
http://www.hindawi.com/journals/tswj/2014/840504/
We consider a new iterative method due to Kadioglu and Yildirim (2014) for further investigation. We study convergence analysis of this iterative method when applied to class of contraction mappings. Furthermore, we give a data dependence result for fi…xed point of contraction mappings with the help of the new iteration method.
Fatma Öztürk Çeliker
Copyright © 2014 Fatma Öztürk Çeliker. All rights reserved.

A Hybrid Mean Value Involving Dedekind Sums and the General Exponential Sums
Thu, 07 Aug 2014 11:39:03 +0000
http://www.hindawi.com/journals/tswj/2014/914591/
The main purpose of this paper is using the analytic method, A. Weil’s classical work for the upper bound estimate of the general exponential sums, and the properties of Gauss sums to study the hybrid mean value problem involving Dedekind sums and the general exponential sums and give a sharp asymptotic formula for it.
Jianghua Li and Tingting Wang
Copyright © 2014 Jianghua Li and Tingting Wang. All rights reserved.

LittlewoodPaley Operators on Morrey Spaces with Variable Exponent
Thu, 07 Aug 2014 06:12:12 +0000
http://www.hindawi.com/journals/tswj/2014/790671/
By applying the vectorvalued inequalities for the LittlewoodPaley operators and their commutators on Lebesgue spaces with variable exponent, the boundedness of the LittlewoodPaley operators, including the Lusin area integrals, the LittlewoodPaley functions and functions, and their commutators generated by BMO functions, is obtained on the Morrey spaces with variable exponent.
Shuangping Tao and Lijuan Wang
Copyright © 2014 Shuangping Tao and Lijuan Wang. All rights reserved.

The Adomian Decomposition Method for Solving a Moving Boundary Problem Arising from the Diffusion of Oxygen in Absorbing Tissue
Mon, 04 Aug 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/579628/
This paper begins by giving the results obtained by the CrankGupta method and GuptaBanik method for the oxygen diffusion problem in absorbing tissue, and then we propose a new resolution method for this problem by the Adomian decomposition method. An approximate analytical solution is obtained, which is demonstrated to be quite accurate by comparison with the numerical and approximate solutions obtained by Crank and Gupta. The study confirms the accuracy and efficiency of the algorithm for analytic approximate solutions of this problem.
Lazhar Bougoffa
Copyright © 2014 Lazhar Bougoffa. All rights reserved.

Numerical Analysis of an Galerkin Mixed Finite Element Method for Time Fractional Telegraph Equation
Thu, 24 Jul 2014 12:04:57 +0000
http://www.hindawi.com/journals/tswj/2014/371413/
We discuss and analyze an Galerkin mixed finite element (GMFE) method to look for the numerical solution of time fractional telegraph equation. We introduce an auxiliary variable to reduce the original equation into lowerorder coupled equations and then formulate an GMFE scheme with two important variables. We discretize the Caputo time fractional derivatives using the finite difference methods and approximate the spatial direction by applying the GMFE method. Based on the discussion on the theoretical error analysis in norm for the scalar unknown and its gradient in one dimensional case, we obtain the optimal order of convergence in spacetime direction. Further, we also derive the optimal error results for the scalar unknown in norm. Moreover, we derive and analyze the stability of GMFE scheme and give the results of a priori error estimates in two or threedimensional cases. In order to verify our theoretical analysis, we give some results of numerical calculation by using the Matlab procedure.
Jinfeng Wang, Meng Zhao, Min Zhang, Yang Liu, and Hong Li
Copyright © 2014 Jinfeng Wang et al. All rights reserved.

Some HermiteHadamard Type Inequalities for Harmonically sConvex Functions
Thu, 24 Jul 2014 11:53:31 +0000
http://www.hindawi.com/journals/tswj/2014/279158/
We establish some estimates of the righthand side of HermiteHadamard type inequalities for functions whose derivatives absolute values are harmonically sconvex. Several HermiteHadamard type inequalities for products of two harmonically sconvex functions are also considered.
Feixiang Chen and Shanhe Wu
Copyright © 2014 Feixiang Chen and Shanhe Wu. All rights reserved.

Hyperbolic Cross Truncations for Stochastic Fourier Cosine Series
Thu, 24 Jul 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/265031/
Based on our decomposition of stochastic processes and our asymptotic representations of Fourier cosine coefficients, we deduce an asymptotic formula of approximation errors of hyperbolic cross truncations for bivariate stochastic Fourier cosine series. Moreover we propose a kind of Fourier cosine expansions with polynomials factors such that the corresponding Fourier cosine coefficients decay very fast. Although our research is in the setting of stochastic processes, our results are also new for deterministic functions.
Zhihua Zhang
Copyright © 2014 Zhihua Zhang. All rights reserved.

Analytical Approximate Solutions for a General Class of Nonlinear Delay Differential Equations
Thu, 24 Jul 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/631416/
We use the polynomial least squares method (PLSM), which allows us to compute analytical approximate polynomial solutions for a very general class of strongly nonlinear delay differential equations. The method is tested by computing approximate solutions for several applications including the pantograph equations and a nonlinear timedelay model from biology. The accuracy of the method is illustrated by a comparison with approximate solutions previously computed using other methods.
Bogdan Căruntu and Constantin Bota
Copyright © 2014 Bogdan Căruntu and Constantin Bota. All rights reserved.

Dynamics of a Delayed Model for the Transmission of Malicious Objects in Computer Network
Wed, 23 Jul 2014 09:37:04 +0000
http://www.hindawi.com/journals/tswj/2014/194104/
An SEIQRS model for the transmission of malicious objects in computer network with two delays is investigated in this paper. We show that possible combination of the two delays can affect the stability of the model and make the model bifurcate periodic solutions under some certain conditions. For further investigation, properties of the periodic solutions are studied by using the normal form method and center manifold theory. Finally, some numerical simulations are given to justify the theoretical results.
Zizhen Zhang and Huizhong Yang
Copyright © 2014 Zizhen Zhang and Huizhong Yang. All rights reserved.

A Novel Chaotic Map and an Improved ChaosBased Image Encryption Scheme
Sun, 20 Jul 2014 11:12:00 +0000
http://www.hindawi.com/journals/tswj/2014/713541/
In this paper, we present a novel approach to create the new chaotic map and propose an improved image encryption scheme based on it. Compared with traditional classic onedimensional chaotic maps like Logistic Map and Tent Map, this newly created chaotic map demonstrates many better chaotic properties for encryption, implied by a much larger maximal Lyapunov exponent. Furthermore, the new chaotic map and Arnold’s Cat Map based image encryption method is designed and proved to be of solid robustness. The simulation results and security analysis indicate that such method not only can meet the requirement of imagine encryption, but also can result in a preferable effectiveness and security, which is usable for general applications.
Xianhan Zhang and Yang Cao
Copyright © 2014 Xianhan Zhang and Yang Cao. All rights reserved.

On the Generalization of Lehmer Problem and HighDimension Kloosterman Sums
Wed, 16 Jul 2014 12:02:08 +0000
http://www.hindawi.com/journals/tswj/2014/726053/
For any fixed integer and integer with , it is clear that there exist k integers such that . Let denote the number of all such that and 2†. In this paper, we will use the analytic method and the estimate for highdimension Kloosterman sums to study the asymptotic properties of and give two interesting asymptotic formulae for it.
Guohui Chen and Han Zhang
Copyright © 2014 Guohui Chen and Han Zhang. All rights reserved.

A New Solution to the Matrix Equation
Tue, 15 Jul 2014 12:00:16 +0000
http://www.hindawi.com/journals/tswj/2014/543610/
We investigate the matrix equation . For convenience, the matrix equation is named as KalmanYakubovichconjugate matrix equation. The explicit
solution is constructed when the above matrix equation has unique solution. And this solution is
stated as a polynomial of coefficient matrices of the matrix equation. Moreover, the explicit solution
is also expressed by the symmetric operator matrix, controllability matrix, and observability matrix.
The proposed approach does not require the coefficient matrices to be in arbitrary canonical form.
At the end of this paper, the numerical example is shown to illustrate the effectiveness of the
proposed method.
Caiqin Song
Copyright © 2014 Caiqin Song. All rights reserved.

Multicriteria Group Decision Making by Using Trapezoidal Valued Hesitant Fuzzy Sets
Mon, 14 Jul 2014 14:23:59 +0000
http://www.hindawi.com/journals/tswj/2014/304834/
The concept of trapezoidal valued hesitant fuzzy set is introduced. Notion for distance between any two trapezoidal valued hesitant fuzzy elements is given. Using this proposed distance measure, we extend the technique for order preference by similarity to ideal solution for trapezoidal valued hesitant fuzzy sets. An example is constructed to show usefulness of this extension for multicriteria group decision making, where the opinions about the criteria values are expressed as trapezoidal valued hesitant fuzzy set.
Tabasam Rashid and Syed Muhammad Husnine
Copyright © 2014 Tabasam Rashid and Syed Muhammad Husnine. All rights reserved.

The Smallest Spectral Radius of Graphs with a Given Clique Number
Sun, 13 Jul 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/232153/
The first four smallest values of the spectral radius among all connected graphs with maximum clique size are obtained.
JingMing Zhang, TingZhu Huang, and JiMing Guo
Copyright © 2014 JingMing Zhang et al. All rights reserved.

Generalized Equilibrium Problem with Mixed Relaxed Monotonicity
Thu, 10 Jul 2014 07:57:30 +0000
http://www.hindawi.com/journals/tswj/2014/807324/
We extend the concept of relaxed monotonicity to mixed relaxed monotonicity. The concept of mixed relaxed monotonicity is more general than many existing concepts of monotonicities. Finally, we apply this concept and well known KKMtheory to obtain the solution of generalized equilibrium problem.
Haider Abbas Rizvi, Adem Kılıçman, and Rais Ahmad
Copyright © 2014 Haider Abbas Rizvi et al. All rights reserved.

Toughness Condition for a Graph to Be a Fractional Critical Deleted Graph
Wed, 09 Jul 2014 08:55:26 +0000
http://www.hindawi.com/journals/tswj/2014/369798/
A graph is called a fractional deleted graph if admits a fractional factor for any . A graph is called a fractional critical deleted graph if, after deleting any vertices from , the resulting graph is still a fractional deleted graph. The toughness, as the parameter for measuring the vulnerability of communication networks, has received significant attention in computer science. In this paper, we present the relationship between toughness and fractional critical deleted graphs. It is determined that is fractional critical deleted if .
Wei Gao and Yun Gao
Copyright © 2014 Wei Gao and Yun Gao. All rights reserved.

Free Convection Nanofluid Flow in the StagnationPoint Region of a ThreeDimensional Body
Tue, 08 Jul 2014 08:54:35 +0000
http://www.hindawi.com/journals/tswj/2014/158269/
Analytical results are presented for a steady threedimensional free convection flow in the stagnation point region over a general curved isothermal surface placed in a nanofluid. The momentum equations in x and ydirections, energy balance equation, and nanoparticle concentration equation are reduced to a set of four fully coupled nonlinear differential equations under appropriate similarity transformations. The well known technique optimal homotopy analysis method (OHAM) is used to obtain the exact solution explicitly, whose convergence is then checked in detail. Besides, the effects of the physical parameters, such as the Lewis number, the Brownian motion parameter, the thermophoresis parameter, and the buoyancy ratio on the profiles of velocities, temperature, and concentration, are studied and discussed. Furthermore the local skin friction coefficients in x and ydirections, the local Nusselt number, and the local Sherwood number are examined for various values of the physical parameters.
Umer Farooq and Hang Xu
Copyright © 2014 Umer Farooq and Hang Xu. All rights reserved.

A Lower Bound on the Sinc Function and Its Application
Tue, 08 Jul 2014 07:37:15 +0000
http://www.hindawi.com/journals/tswj/2014/571218/
A lower bound on the sinc function is given. Application for the sequence which related to Carleman inequality is given as well.
Yue Hu and Cristinel Mortici
Copyright © 2014 Yue Hu and Cristinel Mortici. All rights reserved.

Riemann Boundary Value Problem for Triharmonic Equation in Higher Space
Tue, 08 Jul 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/415052/
We mainly deal with the boundary value problem for triharmonic function with value in a universal Clifford algebra: , , , , , , , where is a Lyapunov surface in , is the Dirac operator, and are unknown functions with values in a universal Clifford algebra Under some hypotheses, it is proved that the boundary value problem has a unique solution.
Longfei Gu
Copyright © 2014 Longfei Gu. All rights reserved.

Temporal and Spatial Evolution Characteristics of Disturbance Wave in a Hypersonic Boundary Layer due to SingleFrequency Entropy Disturbance
Sun, 06 Jul 2014 08:10:21 +0000
http://www.hindawi.com/journals/tswj/2014/517242/
By using a highorder accurate finite difference scheme, direct numerical simulation of hypersonic flow over an 8° halfwedgeangle blunt wedge under freestream singlefrequency entropy disturbance is conducted; the generation and the temporal and spatial nonlinear evolution of boundary layer disturbance waves are investigated. Results show that, under the freestream singlefrequency entropy disturbance, the entropy state of boundary layer is changed sharply and the disturbance waves within a certain frequency range are induced in the boundary layer. Furthermore, the amplitudes of disturbance waves in the period phase are larger than that in the response phase and ablation phase and the frequency range in the boundary layer in the period phase is narrower than that in these two phases. In addition, the mode competition, dominant mode transformation, and disturbance energy transfer exist among different modes both in temporal and in spatial evolution. The mode competition changes the characteristics of nonlinear evolution of the unstable waves in the boundary layer. The development of the most unstable mode along streamwise relies more on the motivation of disturbance waves in the upstream than that of other modes on this motivation.
Zhenqing Wang, Xiaojun Tang, Hongqing Lv, and Jianqiang Shi
Copyright © 2014 Zhenqing Wang et al. All rights reserved.

Process Design of a Ball Joint, Considering Caulking and PullOut Strength
Thu, 03 Jul 2014 06:33:48 +0000
http://www.hindawi.com/journals/tswj/2014/971679/
A ball joint for an automobile steering system is a pivot component which is connected to knuckle and lower control arm. The manufacturing process for its caulking comprises spinning and deforming. In this study, the process was simulated by flexible multibody dynamics. The caulking was evaluated qualitatively through numerical analysis and inspecting a plastically deformed shape. The structural responses of a ball joint, namely, pullout strength and stiffness, are commonly investigated in the development process. Thus, following the caulking analysis, the structural responses were considered. In addition, three design variables related to the manufacturing process were defined, and the effects of design variables with respect to pullout strength, caulking depth, and maximum stress were obtained by introducing the DOE using an L9 orthogonal array. Finally, the optimum design maximizing the pullout strength was suggested. For the final design, the caulking quality and the pullout strength were investigated by making six samples and their tests.
BongSu Sin and KwonHee Lee
Copyright © 2014 BongSu Sin and KwonHee Lee. All rights reserved.

Radius Constants for Analytic Functions with Fixed Second Coefficient
Tue, 01 Jul 2014 09:18:30 +0000
http://www.hindawi.com/journals/tswj/2014/898614/
Let be analytic in the unit disk with the second coefficient satisfying , . Sharp radius of Janowski starlikeness is obtained for functions whose th coefficient satisfies or . Other radius constants are also obtained for these functions, and connections with earlier results are made.
Mahnaz M. Nargesi, Rosihan M. Ali, and V. Ravichandran
Copyright © 2014 Mahnaz M. Nargesi et al. All rights reserved.

Weighted Statistical Convergence for Sequences of Positive Linear Operators
Tue, 01 Jul 2014 07:56:18 +0000
http://www.hindawi.com/journals/tswj/2014/437863/
We introduce the notion of weighted statistical convergence of a sequence, where represents the nonnegative regular matrix. We also prove the Korovkin approximation theorem by using the notion of weighted statistical convergence. Further, we give a rate of weighted statistical convergence and apply the classical Bernstein polynomial to construct an illustrative example in support of our result.
S. A. Mohiuddine, Abdullah Alotaibi, and Bipan Hazarika
Copyright © 2014 S. A. Mohiuddine et al. All rights reserved.

Eventually Periodic Solutions of a MaxType Difference Equation
Tue, 01 Jul 2014 07:50:04 +0000
http://www.hindawi.com/journals/tswj/2014/219437/
We study the following maxtype difference equation , , where is a periodic sequence with period and with and , and the initial conditions are real numbers with . We show that if (or and is odd), then every welldefined solution of this equation is eventually periodic with period , which generalizes the results of (Elsayed and Stevi (2009), Iričanin and Elsayed (2010), Qin et al. (2012), and Xiao and Shi (2013)) to the general case. Besides, we construct an example with and being even which has a welldefined solution that is not eventually periodic.
Taixiang Sun, Jing Liu, Qiuli He, XinHe Liu, and Chunyan Tao
Copyright © 2014 Taixiang Sun et al. All rights reserved.

A Legendre tauSpectral Method for Solving TimeFractional Heat Equation with Nonlocal Conditions
Wed, 25 Jun 2014 12:36:38 +0000
http://www.hindawi.com/journals/tswj/2014/706296/
We develop the tauspectral method to solve the timefractional heat equation (TFHE) with nonlocal condition. In order to achieve highly accurate solution of this problem, the operational matrix of fractional integration (described in the RiemannLiouville sense) for shifted Legendre polynomials is investigated in conjunction with tauspectral scheme and the Legendre operational polynomials are used as the base function. The main advantage in using the presented scheme is that it converts the TFHE with nonlocal condition to a system of algebraic equations that simplifies the problem. For demonstrating the validity and applicability of the developed spectral scheme, two numerical examples are presented. The logarithmic graphs of the maximum absolute errors is presented to achieve the exponential convergence of the proposed method. Comparing between our spectral method and other methods ensures that our method is more accurate than those solved similar problem.
A. H. Bhrawy and M. A. Alghamdi
Copyright © 2014 A. H. Bhrawy and M. A. Alghamdi. All rights reserved.

Recent Development in Partial Differential Equations and Their Applications
Wed, 25 Jun 2014 05:52:12 +0000
http://www.hindawi.com/journals/tswj/2014/243461/
Hossein Jafari, Chaudry M. Khalique, and Dumitru Baleanu
Copyright © 2014 Hossein Jafari et al. All rights reserved.

HPMBased Dynamic Sparse Grid Approach for PeronaMalik Equation
Mon, 23 Jun 2014 13:44:09 +0000
http://www.hindawi.com/journals/tswj/2014/417486/
The PeronaMalik equation is a famous image edgepreserved denoising model, which is represented as a nonlinear 2dimension partial differential equation. Based on the homotopy perturbation method (HPM) and the multiscale interpolation theory, a dynamic sparse grid method for PeronaMalik was constructed in this paper. Compared with the traditional multiscale numerical techniques, the proposed method is independent of the basis function. In this method, a dynamic choice scheme of external grid points is proposed to eliminate the artifacts introduced by the partitioning technique. In order to decrease the calculation amount introduced by the change of the external grid points, the Newton interpolation technique is employed instead of the traditional Lagrange interpolation operator, and the condition number of the discretized matrix different equations is taken into account of the choice of the external grid points. Using the new numerical scheme, the time complexity of the sparse grid method for the image denoising is decreased to O(4J+2j) from O(43J), (). The experiment results show that the dynamic choice scheme of the external gird points can eliminate the boundary effect effectively and the efficiency can also be improved greatly comparing with the classical interval wavelets numerical methods.
ShuLi Mei and DeHai Zhu
Copyright © 2014 ShuLi Mei and DeHai Zhu. All rights reserved.

Strongly Lacunary Ward Continuity in 2Normed Spaces
Mon, 23 Jun 2014 11:26:17 +0000
http://www.hindawi.com/journals/tswj/2014/479679/
A function defined on a subset of a 2normed space is strongly lacunary ward continuous if it preserves strongly lacunary quasiCauchy sequences of points in ; that is, is a strongly lacunary quasiCauchy sequence whenever () is strongly lacunary quasiCauchy. In this paper, not only strongly lacunary ward continuity, but also some other kinds
of continuities are investigated in 2normed spaces.
Hüseyin Çakalli and Sibel Ersan
Copyright © 2014 Hüseyin Çakalli and Sibel Ersan. All rights reserved.

Matrix Transformations between Certain Sequence Spaces over the NonNewtonian Complex Field
Thu, 19 Jun 2014 07:37:19 +0000
http://www.hindawi.com/journals/tswj/2014/705818/
In some cases, the most general linear operator between two sequence spaces is given by an infinite
matrix. So the theory of matrix transformations has always been of great interest in the study of sequence spaces.
In the present paper, we introduce the matrix transformations in sequence spaces over the field and characterize
some classes of infinite matrices with respect to the nonNewtonian calculus. Also we give the necessary and
sufficient conditions on an infinite matrix transforming one of the classical sets over to another one.
Furthermore, the concept for sequencetosequence and seriestoseries methods of summability is given with
some illustrated examples.
Uğur Kadak and Hakan Efe
Copyright © 2014 Uğur Kadak and Hakan Efe. All rights reserved.

Determination of the KötheToeplitz Duals over the NonNewtonian Complex Field
Mon, 16 Jun 2014 05:28:36 +0000
http://www.hindawi.com/journals/tswj/2014/438924/
The important point to note is that the nonNewtonian calculus is a selfcontained system independent of any other system of calculus. Therefore the reader may be surprised to learn that there is a uniform relationship between the corresponding operators of this calculus and the classical calculus. Several basic concepts based on nonNewtonian calculus are presented by Grossman (1983), Grossman and Katz (1978), and Grossman (1979). Following Grossman and Katz, in the present paper, we introduce the sets of bounded, convergent, null series and pbounded variation of sequences over the complex field and prove that these are complete. We propose a quite concrete approach based on the notion of KötheToeplitz duals with respect to the nonNewtonian calculus. Finally, we derive some inclusion relationships between Köthe space and solidness.
Uğur Kadak
Copyright © 2014 Uğur Kadak. All rights reserved.

Exact Multisoliton Solutions of General Nonlinear Schrödinger Equation with Derivative
Thu, 12 Jun 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/593983/
Multisoliton solutions are derived for a general nonlinear Schrödinger equation with
derivative by using Hirota’s approach. The dynamics of onesoliton solution and twosoliton interactions are also illustrated. The considered equation can reduce to nonlinear Schrödinger equation with derivative as well as the solutions.
Qi Li, Qiuyuan Duan, and Jianbing Zhang
Copyright © 2014 Qi Li et al. All rights reserved.

On the Signless Laplacian Spectral Radius of Bicyclic Graphs with Perfect Matchings
Wed, 11 Jun 2014 08:57:53 +0000
http://www.hindawi.com/journals/tswj/2014/374501/
The graph with the largest signless Laplacian spectral radius among all bicyclic graphs with perfect matchings is determined.
JingMing Zhang, TingZhu Huang, and JiMing Guo
Copyright © 2014 JingMing Zhang et al. All rights reserved.

Theory, Methods, and Applications of Fractional Calculus
Mon, 09 Jun 2014 09:14:45 +0000
http://www.hindawi.com/journals/tswj/2014/249717/
Abdon Atangana, Adem Kiliçman, Suares Clovis Oukouomi Noutchie, Aydin Secer, Santanu Saha Ray, and Ahmed M. A. ElSayed
Copyright © 2014 Abdon Atangana et al. All rights reserved.

Implicit Contractive Mappings in Modular Metric and Fuzzy Metric Spaces
Thu, 05 Jun 2014 10:54:40 +0000
http://www.hindawi.com/journals/tswj/2014/981578/
The notion of modular metric spaces being a natural generalization of classical modulars over linear spaces like Lebesgue, Orlicz, MusielakOrlicz, Lorentz, OrliczLorentz, and CalderonLozanovskii spaces was recently introduced. In this paper we investigate the
existence of fixed points of generalized admissible modular contractive mappings in modular metric spaces. As applications, we derive some new fixed point theorems in partially ordered modular metric spaces, Suzuki type fixed point theorems in modular metric spaces and new fixed point theorems for integral contractions. In last section, we develop an important relation between fuzzy metric
and modular metric and deduce certain new fixed point results in triangular fuzzy metric spaces. Moreover, some examples are provided here to illustrate the usability of the obtained results.
N. Hussain and P. Salimi
Copyright © 2014 N. Hussain and P. Salimi. All rights reserved.

Approximate Analytical Solutions of the Regularized Long Wave Equation Using the Optimal Homotopy Perturbation Method
Tue, 03 Jun 2014 12:14:01 +0000
http://www.hindawi.com/journals/tswj/2014/721865/
The paper presents the optimal homotopy perturbation method, which is a new method to find approximate analytical solutions for nonlinear partial differential equations. Based on the wellknown homotopy perturbation method, the optimal homotopy perturbation method presents an accelerated convergence compared to the regular homotopy perturbation method. The applications presented emphasize the high accuracy of the method by means of a comparison with previous results.
Constantin Bota and Bogdan Căruntu
Copyright © 2014 Constantin Bota and Bogdan Căruntu. All rights reserved.

Continuous Hesitant Fuzzy Aggregation Operators and Their Application to Decision Making under IntervalValued Hesitant Fuzzy Setting
Sun, 25 May 2014 12:42:06 +0000
http://www.hindawi.com/journals/tswj/2014/897304/
Intervalvalued hesitant fuzzy set (IVHFS), which is the further generalization of hesitant fuzzy set, can overcome the barrier that the precise membership degrees are sometimes hard to be specified and permit the membership degrees of an element to a set to have a few different interval values. To efficiently and effectively aggregate the intervalvalued hesitant fuzzy information, in this paper, we investigate the continuous hesitant fuzzy aggregation operators with the aid of continuous OWA operator; the CHFOWA operator and CHFOWG operator are presented and their essential properties are studied in detail. Then, we extend the CHFOW operators to aggregate multiple intervalvalued hesitant fuzzy elements and then develop the weighted CHFOW (WCHFOWA and WCHFOWG) operators, the ordered weighted CHFOW (OWCHFOWA and OWCHFOWG) operators, and the synergetic weighted CHFOWA (SWCHFOWA and SWCHFOWG) operators; some properties are also discussed to support them. Furthermore, a SWCHFOW operatorsbased approach for multicriteria decision making problem is developed. Finally, a practical example involving the evaluation of service quality of hightech enterprises is carried out and some comparative analyses are performed to demonstrate the applicability and effectiveness of the developed approaches.
DingHong Peng, TieDan Wang, ChangYuan Gao, and Hua Wang
Copyright © 2014 DingHong Peng et al. All rights reserved.

Output Feedback FractionalOrder Nonsingular Terminal Sliding Mode Control of Underwater Remotely Operated Vehicles
Sun, 25 May 2014 11:59:49 +0000
http://www.hindawi.com/journals/tswj/2014/838019/
For the 4DOF (degrees of freedom) trajectory tracking control problem of underwater remotely operated vehicles (ROVs) in the presence of model uncertainties and external disturbances, a novel output feedback fractionalorder nonsingular terminal sliding mode control (FONTSMC) technique is introduced in light of the equivalent output injection sliding mode observer (SMO) and TSMC principle and fractional calculus technology. The equivalent output injection SMO is applied to reconstruct the full states in finite time. Meanwhile, the FONTSMC algorithm, based on a new proposed fractionalorder switching manifold, is designed to stabilize the tracking error to equilibrium points in finite time. The corresponding stability analysis of the closedloop system is presented using the fractionalorder version of the Lyapunov stability theory. Comparative numerical simulation results are presented and analyzed to demonstrate the effectiveness of the proposed method. Finally, it is noteworthy that the proposed output feedback FONTSMC technique can be used to control a broad range of nonlinear secondorder dynamical systems in finite time.
Yaoyao Wang, Jiawang Chen, and Linyi Gu
Copyright © 2014 Yaoyao Wang et al. All rights reserved.

On Certain Subclass of Meromorphic Spirallike Functions Involving the Hypergeometric Function
Sun, 25 May 2014 10:49:08 +0000
http://www.hindawi.com/journals/tswj/2014/541371/
We introduce and investigate a new subclass of meromorphic spirallike functions. Such results as integral representations, convolution properties, and coefficient estimates are proved. The results presented here would provide extensions of those given in earlier works. Several other results are also obtained.
Lei Shi and ZhiGang Wang
Copyright © 2014 Lei Shi and ZhiGang Wang. All rights reserved.

Some Common Fixed Point Theorems in Complex Valued Metric Spaces
Sun, 25 May 2014 09:26:23 +0000
http://www.hindawi.com/journals/tswj/2014/587825/
Azam et al. (2011), introduce the notion of complex valued metric spaces and obtained
common fixed point result for mappings in the context of complex valued metric spaces.
Rao et al. (2013) introduce the notion of complex valued metric spaces. In this paper, we
generalize the results of Azam et al. (2011), and Bhatt et al. (2011), by improving the conditions
of contraction to establish the existence and uniqueness of common fixed point for two
selfmappings on complex valued metric spaces. Some examples are given to illustrate
the main results.
Aiman A. Mukheimer
Copyright © 2014 Aiman A. Mukheimer. All rights reserved.

On the Solution of NBVP for Multidimensional Hyperbolic Equations
Sun, 25 May 2014 08:24:42 +0000
http://www.hindawi.com/journals/tswj/2014/841602/
We are interested in studying multidimensional hyperbolic equations with nonlocal integral and Neumann or nonclassical conditions. For the approximate solution of this problem first and second order of accuracy difference schemes are presented. Stability estimates for the solution of these difference schemes are established. Some numerical examples illustrating applicability of these methods to hyperbolic problems are given.
Allaberen Ashyralyev and Necmettin Aggez
Copyright © 2014 Allaberen Ashyralyev and Necmettin Aggez. All rights reserved.

A New Sum Analogous to Gauss Sums and Its Fourth Power Mean
Wed, 21 May 2014 11:15:56 +0000
http://www.hindawi.com/journals/tswj/2014/139725/
The main purpose of this paper is to use the analytic methods and the properties of Gauss sums to study the computational problem of one kind of new sum analogous to Gauss sums and give an interesting fourth power mean and a sharp upper bound estimate for it.
Shaofeng Ru and Wenpeng Zhang
Copyright © 2014 Shaofeng Ru and Wenpeng Zhang. All rights reserved.

The Unique Range Set of Meromorphic Functions in an Angular Domain
Thu, 15 May 2014 11:39:37 +0000
http://www.hindawi.com/journals/tswj/2014/564640/
By using Tsuji's characteristic, we investigate uniqueness of meromorphic functions in an angular domain dealing with the shared set, which is different from the set of the paper (Lin et al., 2006) and obtain a series of results about the unique range set of meromorphic functions in angular domain.
HongYan Xu, ZuXing Xuan, and Hua Wang
Copyright © 2014 HongYan Xu et al. All rights reserved.

Behavior of a Competitive System of SecondOrder Difference Equations
Thu, 15 May 2014 11:02:14 +0000
http://www.hindawi.com/journals/tswj/2014/283982/
We study the boundedness and persistence, existence, and uniqueness of positive
equilibrium, local and global behavior of positive equilibrium point, and rate of convergence of
positive solutions of the following system of rational difference equations: ,
, where the parameters , , , and for and initial conditions , , , and are
positive real numbers. Some numerical examples are given to verify our theoretical results.
Q. Din, T. F. Ibrahim, and K. A. Khan
Copyright © 2014 Q. Din et al. All rights reserved.

Infinitely Many Homoclinic Solutions for Second Order Nonlinear Difference Equations with Laplacian
Wed, 14 May 2014 09:40:23 +0000
http://www.hindawi.com/journals/tswj/2014/276372/
We employ Nehari manifold methods and critical point theory to study the existence of nontrivial homoclinic solutions of discrete Laplacian equations with a coercive weight function and superlinear nonlinearity. Without assuming the
classical AmbrosettiRabinowitz condition and without any periodicity assumptions, we prove the existence and multiplicity results of the equations.
Guowei Sun and Ali Mai
Copyright © 2014 Guowei Sun and Ali Mai. All rights reserved.

On Generalized Difference Hahn Sequence Spaces
Tue, 13 May 2014 14:05:14 +0000
http://www.hindawi.com/journals/tswj/2014/398203/
We construct some generalized difference Hahn sequence spaces by mean of sequence of modulus functions. The topological properties and some inclusion relations of spaces are investigated. Also we compute the dual of these spaces, and some matrix transformations are characterized.
Kuldip Raj and Adem Kiliçman
Copyright © 2014 Kuldip Raj and Adem Kiliçman. All rights reserved.

Fixed Point Theorems for Generalized αβWeakly Contraction Mappings in Metric Spaces and Applications
Wed, 07 May 2014 15:47:52 +0000
http://www.hindawi.com/journals/tswj/2014/784207/
We extend the notion of generalized weakly contraction mappings due to Choudhury et al. (2011) to generalized weakly contraction mappings. We show with examples that our new class of mappings is a real generalization of several known classes of mappings. We also establish fixed point results for such mappings in metric spaces. Applying our new results, we obtain fixed point results on ordinary metric spaces, metric spaces endowed with an arbitrary binary relation, and metric spaces endowed with graph.
Abdul Latif, Chirasak Mongkolkeha, and Wutiphol Sintunavarat
Copyright © 2014 Abdul Latif et al. All rights reserved.

Fixed Point Results for Contractive Maps with Application to Boundary Value Problems
Wed, 07 May 2014 11:26:52 +0000
http://www.hindawi.com/journals/tswj/2014/585964/
We unify the concepts of Gmetric, metriclike, and bmetric to define new notion of generalized bmetriclike space and discuss its topological and structural properties. In addition, certain fixed point theorems for two classes of Gαadmissible contractive mappings in such spaces are obtained and some new fixed point results are derived in corresponding partially ordered space. Moreover, some examples and an application to the existence of a solution for the firstorder periodic boundary value problem are provided here to illustrate the usability of the obtained results.
Nawab Hussain, Vahid Parvaneh, and Jamal Rezaei Roshan
Copyright © 2014 Nawab Hussain et al. All rights reserved.

An Unconditionally Stable, PositivityPreserving Splitting Scheme for Nonlinear BlackScholes Equation with Transaction Costs
Wed, 07 May 2014 08:51:00 +0000
http://www.hindawi.com/journals/tswj/2014/525207/
This paper deals with the numerical analysis of nonlinear BlackScholes equation with transaction costs. An unconditionally stable and monotone splitting method, ensuring positive numerical solution and avoiding unstable oscillations, is proposed. This numerical method is based on the LODBackward Euler method which allows us to solve the discrete equation explicitly. The numerical results for vanilla call option and for European butterfly spread are provided. It turns out that the proposed scheme is efficient and reliable.
Jianqiang Guo and Wansheng Wang
Copyright © 2014 Jianqiang Guo and Wansheng Wang. All rights reserved.

New Proofs of Some Summation and Transformation Formulas
Wed, 07 May 2014 08:37:14 +0000
http://www.hindawi.com/journals/tswj/2014/940358/
We obtain an expectation formula and give the probabilistic proofs of some summation and transformation formulas of series based on our expectation formula. Although these formulas in themselves are not the probability results, the proofs given are based on probabilistic concepts.
XianFang Liu, YaQing Bi, and QiuMing Luo
Copyright © 2014 XianFang Liu et al. All rights reserved.

Commutators of Singular Integral Operators Satisfying a Variant of a Lipschitz Condition
Sun, 04 May 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/641705/
Let be a singular integral operator with its kernel satisfying , , where and are appropriate functions and and are positive constants. For with , the multilinear commutator generated by and is formally defined by . In this paper, the weighted boundedness and the weighted weak type estimate for the multilinear commutator are established.
Pu Zhang and Daiqing Zhang
Copyright © 2014 Pu Zhang and Daiqing Zhang. All rights reserved.

Analytic Approximate Solution for FalknerSkan Equation
Wed, 30 Apr 2014 12:16:40 +0000
http://www.hindawi.com/journals/tswj/2014/617453/
This paper deals with the FalknerSkan nonlinear differential equation. An analytic approximate technique, namely, optimal homotopy asymptotic method (OHAM), is employed to propose a procedure to solve a boundarylayer problem. Our method does not depend upon small parameters and provides us with a convenient way to optimally control the convergence of the approximate solutions. The obtained results reveal that this procedure is very effective, simple, and accurate. A very good agreement was found between our approximate results and numerical solutions, which prove that OHAM is very efficient in practice, ensuring a very rapid convergence after only one iteration.
Vasile Marinca, RemusDaniel Ene, and Bogdan Marinca
Copyright © 2014 Vasile Marinca et al. All rights reserved.

Solution of Some Types of Differential Equations: Operational Calculus and Inverse Differential Operators
Wed, 30 Apr 2014 06:44:34 +0000
http://www.hindawi.com/journals/tswj/2014/454865/
We present a general method of operational nature to analyze and obtain solutions for a variety of equations of mathematical physics and related mathematical problems. We construct inverse differential operators and produce operational identities, involving inverse derivatives and families of generalised orthogonal polynomials, such as Hermite and Laguerre polynomial families. We develop the methodology of inverse and exponential operators, employing them for the study of partial differential equations. Advantages of the operational technique, combined with the use of integral transforms, generating functions with exponentials and their integrals, for solving a wide class of partial derivative equations, related to heat, wave, and transport problems, are demonstrated.
K. Zhukovsky
Copyright © 2014 K. Zhukovsky. All rights reserved.

The Dynamic Mutation Characteristics of Thermonuclear Reaction in Tokamak
Tue, 29 Apr 2014 10:44:20 +0000
http://www.hindawi.com/journals/tswj/2014/841891/
The stability and bifurcations of multiple limit cycles for the physical model of thermonuclear reaction in Tokamak are investigated in this paper. The onedimensional GinzburgLandau type perturbed diffusion equations for the density of the plasma and the radial electric field near the plasma edge in Tokamak are established. First, the equations are transformed to the average equations with the method of multiple scales and the average equations turn to be a symmetric perturbed polynomial Hamiltonian system of degree 5. Then, with the bifurcations theory and method of detection function, the qualitative behavior of the unperturbed system and the number of the limit cycles of the perturbed system for certain groups of parameter are analyzed. At last, the stability of the limit cycles is studied and the physical meaning of Tokamak equations under these parameter groups is given.
Jing Li, Tingting Quan, Wei Zhang, and Wei Deng
Copyright © 2014 Jing Li et al. All rights reserved.

Cluster Synchronization for a Class of Neutral Complex Dynamical Networks with Markovian Switching
Sun, 27 Apr 2014 10:03:53 +0000
http://www.hindawi.com/journals/tswj/2014/785706/
cluster synchronization problem for a class of neutral complex dynamical networks (NCDNs) with Markovian switching is investigated in this paper. Both the retarded and neutral delays are considered to be interval mode dependent and time varying. The concept of cluster synchronization is proposed to quantify the attenuation level of synchronization error dynamics against the exogenous disturbance of the NCDNs. Based on a novel Lyapunov functional, by employing some integral inequalities and the nature of convex combination, mode delayrangedependent cluster synchronization criteria are derived in the form of linear matrix inequalities which depend not only on the disturbance attenuation but also on the initial values of the NCDNs. Finally, numerical examples are given
to demonstrate the feasibility and effectiveness of the proposed theoretical results.
Xinghua Liu
Copyright © 2014 Xinghua Liu. All rights reserved.

New Type Continuities via Abel Convergence
Sun, 27 Apr 2014 08:52:27 +0000
http://www.hindawi.com/journals/tswj/2014/398379/
We investigate the concept of Abel continuity. A function defined on a subset of , the set of real numbers, is Abel continuous if it preserves Abel convergent sequences. Some other types of continuities are also studied and interesting result is obtained. It turned out that uniform limit of a sequence of Abel continuous functions is Abel continuous and the set of Abel continuous functions is a closed subset of continuous functions.
Huseyin Cakalli and Mehmet Albayrak
Copyright © 2014 Huseyin Cakalli and Mehmet Albayrak. All rights reserved.

Identifiability and Identification of Trace Continuous Pollutant Source
Sun, 27 Apr 2014 07:54:02 +0000
http://www.hindawi.com/journals/tswj/2014/215104/
Accidental pollution events often threaten people’s health and lives, and a pollutant source is very necessary so that prompt remedial actions can be taken. In this paper, a trace continuous pollutant source identification method is developed to identify a sudden continuous emission pollutant source in an enclosed space. The location probability model is set up firstly, and then the identification method is realized by searching a global optimal objective value of the location probability. In order to discuss the identifiability performance of the presented method, a conception of a synergy degree of velocity fields is presented in order to quantitatively analyze the impact of velocity field on the identification performance. Based on this conception, some simulation cases were conducted. The application conditions of this method are obtained according to the simulation studies. In order to verify the presented method, we designed an experiment and identified an unknown source appearing in the experimental space. The result showed that the method can identify a sudden trace continuous source when the studied situation satisfies the application conditions.
Hongquan Qu, Shouwen Liu, Liping Pang, and Tao Hu
Copyright © 2014 Hongquan Qu et al. All rights reserved.

Traveling Wave Solutions for Epidemic Cholera Model with DiseaseRelated Death
Sun, 27 Apr 2014 06:52:41 +0000
http://www.hindawi.com/journals/tswj/2014/409730/
Based on Codeço’s cholera model (2001), an epidemic cholera model that incorporates the pathogen diffusion and diseaserelated death is proposed. The formula for minimal wave speed is given. To prove the existence of traveling wave solutions, an invariant cone is constructed by upper and lower solutions and Schauder’s fixed point theorem is applied. The nonexistence of traveling wave solutions is proved by twosided Laplace transform. However, to apply twosided Laplace transform, the prior estimate of exponential decrease of traveling wave solutions is needed. For this aim, a new method is proposed, which can be applied to reactiondiffusion systems consisting of more than three equations.
Tianran Zhang and Qingming Gou
Copyright © 2014 Tianran Zhang and Qingming Gou. All rights reserved.

1Quasiconformal Mappings and CR Mappings on Goursat Groups
Thu, 24 Apr 2014 09:38:19 +0000
http://www.hindawi.com/journals/tswj/2014/930571/
We show that 1quasiconformal mappings on Goursat groups are CR or antiCR mappings. This can reduce the determination of 1quasiconformal mappings to the determination of CR automorphisms of CR manifolds, which is a fundamental problem in the theory of several complex variables.
Qing Yan Wu and Zun Wei Fu
Copyright © 2014 Qing Yan Wu and Zun Wei Fu. All rights reserved.

Analysis of Fractional Dynamic Systems
Wed, 23 Apr 2014 09:07:06 +0000
http://www.hindawi.com/journals/tswj/2014/760634/
Fawang Liu, Richard Magin, Changpin Li, Alla Sikorskii, and Santos Bravo Yuste
Copyright © 2014 Fawang Liu et al. All rights reserved.

The Asymptotic Solutions for a Class of Nonlinear Singular Perturbed Differential Systems with Time delays
Wed, 16 Apr 2014 16:12:57 +0000
http://www.hindawi.com/journals/tswj/2014/965376/
We study a kind of vector singular perturbed delaydifferential equations. By using the methods of boundary function and fractional steps, we construct the formula of asymptotic expansion and confirm the interior layer at . Meanwhile, on the basis of functional analysis skill, the existence of the smooth solution and the uniform validity of the asymptotic expansion are proved.
Han Xu and Yinlai Jin
Copyright © 2014 Han Xu and Yinlai Jin. All rights reserved.

Bifurcations of Nontwisted Heteroclinic Loop with Resonant Eigenvalues
Wed, 16 Apr 2014 09:36:17 +0000
http://www.hindawi.com/journals/tswj/2014/716082/
By using the foundational solutions of the linear variational equation of the unperturbed system along the heteroclinic orbits to establish the local
coordinate systems in the small tubular neighborhoods of the
heteroclinic orbits, we study the bifurcation problems of
nontwisted heteroclinic loop with resonant eigenvalues. The
existence, numbers, and existence regions of 1heteroclinic loop,
1homoclinic loop, 1periodic orbit, 2fold 1periodic orbit, and two
1periodic orbits are obtained. Meanwhile, we give the
corresponding bifurcation surfaces.
Yinlai Jin, Xiaowei Zhu, Zheng Guo, Han Xu, Liqun Zhang, and Benyan Ding
Copyright © 2014 Yinlai Jin et al. All rights reserved.

Determination of Coefficients of HighOrder Schemes for RiemannLiouville Derivative
Tue, 15 Apr 2014 13:02:29 +0000
http://www.hindawi.com/journals/tswj/2014/402373/
Although there have existed some numerical algorithms for the fractional differential equations, developing highorder methods (i.e., with convergence
order greater than or equal to 2) is just the beginning. Lubich has ever proposed
the highorder schemes when he studied the fractional linear multistep
methods, where he constructed the th order schemes for
the th order RiemannLiouville integral and th order RiemannLiouville derivative. In this paper, we study such a problem and develop recursion
formulas to compute these coefficients in the higherorder schemes. The coefficients
of higherorder schemes are also obtained. We first find that these coefficients are oscillatory, which is similar to Runge’s phenomenon. So, they are not suitable for numerical calculations. Finally, several numerical examples are implemented to testify the efficiency of the numerical schemes for .
Rifang Wu, Hengfei Ding, and Changpin Li
Copyright © 2014 Rifang Wu et al. All rights reserved.

On Fourier Series of FuzzyValued Functions
Thu, 10 Apr 2014 12:46:20 +0000
http://www.hindawi.com/journals/tswj/2014/782652/
Fourier analysis is a powerful tool for many problems, and especially for solving various differential equations of interest in science and engineering. In the present paper since the utilization of Zadeh’s Extension principle is quite difficult in practice, we prefer the idea of level sets in order to construct a fuzzyvalued function on a closed interval via related membership function. We derive uniform convergence of a fuzzyvalued function sequences and series with level sets. Also we study Hukuhara differentiation and Henstock integration of a fuzzyvalued function with some necessary inclusions. Furthermore, Fourier series of periodic fuzzyvalued functions is defined and its complex form is given via sine and cosine fuzzy coefficients with an illustrative example. Finally, by using the Dirichlet kernel and its properties, we especially examine the convergence of Fourier series of fuzzyvalued functions at each point of discontinuity, where onesided limits exist.
Uğur Kadak and Feyzi Başar
Copyright © 2014 Uğur Kadak and Feyzi Başar. All rights reserved.

Implementation of Steiner Point of Fuzzy Set
Wed, 09 Apr 2014 12:01:44 +0000
http://www.hindawi.com/journals/tswj/2014/593065/
This paper deals with the implementation of Steiner point of fuzzy set. Some definitions and properties of Steiner point are investigated and extended to fuzzy set. This paper focuses on establishing efficient methods to compute Steiner point of fuzzy set. Two strategies of computing Steiner point of fuzzy set are proposed. One is called linear combination of Steiner points computed by a series of crisp αcut sets of the fuzzy set. The other is an approximate method, which is trying to find the optimal αcut set approaching the fuzzy set. Stability analysis of Steiner point of fuzzy set is also studied. Some experiments on image processing are given, in which the two methods are applied for implementing Steiner point of fuzzy image, and both strategies show their own advantages in computing Steiner point of fuzzy set.
Jiuzhen Liang and Dejiang Wang
Copyright © 2014 Jiuzhen Liang and Dejiang Wang. All rights reserved.

Global Existence and Energy Decay Rates for a KirchhoffType Wave Equation with Nonlinear Dissipation
Mon, 07 Apr 2014 09:49:53 +0000
http://www.hindawi.com/journals/tswj/2014/716740/
The first objective of this paper is to prove the existence and uniqueness of
global solutions for a Kirchhofftype wave equation with nonlinear dissipation
of the form under suitable assumptions on , and . Next, we derive decay estimates of the energy under some growth conditions on the nonlinear dissipation . Lastly, numerical simulations in order to verify the analytical results are given.
Daewook Kim, Dojin Kim, KeumShik Hong, and Il Hyo Jung
Copyright © 2014 Daewook Kim et al. All rights reserved.

Leapfrog/Finite Element Method for Fractional Diffusion Equation
Thu, 03 Apr 2014 13:43:57 +0000
http://www.hindawi.com/journals/tswj/2014/982413/
We analyze a fully discrete leapfrog/Galerkin finite
element method for the numerical solution of the space fractional order (fractional for simplicity) diffusion equation. The generalized fractional derivative spaces are
defined in a bounded interval. And some related properties are further discussed for the
following finite element analysis. Then the fractional diffusion equation
is discretized in space by the finite element method and in time by the explicit
leapfrog scheme. For the resulting fully discrete, conditionally stable scheme,
we prove an error bound of finite element accuracy and of second order in
time. Numerical examples are included to confirm our theoretical analysis.
Zhengang Zhao and Yunying Zheng
Copyright © 2014 Zhengang Zhao and Yunying Zheng. All rights reserved.

Limit of Riemann Solutions to the Nonsymmetric System of KeyfitzKranzer Type
Thu, 03 Apr 2014 09:37:17 +0000
http://www.hindawi.com/journals/tswj/2014/287256/
The limit of Riemann solutions to the nonsymmetric system of KeyfitzKranzer type with a scaled pressure is considered for both polytropic gas and generalized Chaplygin gas. In the former case, the delta shock wave can be obtained as the limit of shock wave and contact discontinuity when and the parameter tends to zero. The point is, the delta shock wave is not the one of transport equations, which is obviously different from cases of some other systems such as Euler equations or relativistic Euler equations. For the generalized Chaplygin gas, unlike the polytropic or isothermal gas, there exists a certain critical value depending only on the Riemann initial data, such that when drops to , the delta shock wave appears as , which is actually a delta solution of the same system in one critical case. Then as becomes smaller and goes to zero at last, the delta shock wave solution is the exact one of transport equations. Furthermore, the vacuum states and contact discontinuities can be obtained as the limit of Riemann solutions when and , respectively.
Lihui Guo and Gan Yin
Copyright © 2014 Lihui Guo and Gan Yin. All rights reserved.

Monotone Data Visualization Using Rational Trigonometric Spline Interpolation
Thu, 03 Apr 2014 09:35:38 +0000
http://www.hindawi.com/journals/tswj/2014/602453/
Rational cubic and bicubic trigonometric schemes are developed to conserve monotonicity of curve and surface data, respectively. The rational cubic function has four parameters in each subinterval, while the rational bicubic partially blended function has eight parameters in each rectangular patch. The monotonicity of curve and surface data is retained by developing constraints on some of these parameters in description of rational cubic and bicubic trigonometric functions. The remaining parameters are kept free to modify the shape of curve and surface if required. The developed algorithm is verified mathematically and demonstrated graphically.
Farheen Ibraheem, Maria Hussain, and Malik Zawwar Hussain
Copyright © 2014 Farheen Ibraheem et al. All rights reserved.

Anticontrol of Hopf Bifurcation and Control of Chaos for a Finance System through Washout Filters with Time Delay
Thu, 03 Apr 2014 09:29:51 +0000
http://www.hindawi.com/journals/tswj/2014/983034/
A controlled model for a financial system through washoutfilteraided dynamical feedback control laws is developed, the problem of anticontrol of Hopf bifurcation from the steady state is studied, and the existence, stability, and direction of bifurcated periodic solutions are discussed in detail. The obtained results show that the delay on price index has great influences on the financial system, which can be applied to suppress or avoid the chaos phenomenon appearing in the financial system.
Huitao Zhao, Mengxia Lu, and Junmei Zuo
Copyright © 2014 Huitao Zhao et al. All rights reserved.

Two Different Methods for Numerical Solution of the Modified Burgers’ Equation
Thu, 03 Apr 2014 08:56:09 +0000
http://www.hindawi.com/journals/tswj/2014/780269/
A numerical solution of the modified Burgers’ equation (MBE) is obtained by
using quartic Bspline subdomain finite element method (SFEM) over which the nonlinear term is locally linearized and using quartic Bspline differential quadrature (QBDQM) method. The accuracy and efficiency of the methods are discussed by
computing and error norms. Comparisons are made with those of some earlier papers. The obtained numerical results show that the methods are effective numerical schemes to solve the MBE. A linear stability analysis, based on the von Neumann scheme, shows the SFEM is unconditionally stable. A rate of convergence analysis
is also given for the DQM.
Seydi Battal Gazi Karakoç, Ali Başhan, and Turabi Geyikli
Copyright © 2014 Seydi Battal Gazi Karakoç et al. All rights reserved.

SincChebyshev Collocation Method for a Class of Fractional DiffusionWave Equations
Tue, 01 Apr 2014 08:16:23 +0000
http://www.hindawi.com/journals/tswj/2014/143983/
This paper is devoted to investigating the numerical solution for a class of fractional diffusionwave equations with a variable coefficient where the fractional derivatives are described in the Caputo sense. The approach is based on the collocation technique where the shifted Chebyshev polynomials in time and the sinc functions in space are utilized, respectively. The problem is reduced to the solution of a system of linear algebraic equations. Through the numerical example, the procedure is tested and the efficiency of the proposed method is confirmed.
Zhi Mao, Aiguo Xiao, Zuguo Yu, and Long Shi
Copyright © 2014 Zhi Mao et al. All rights reserved.

Diagonally Implicit Symplectic RungeKutta Methods with High Algebraic and Dispersion Order
Tue, 01 Apr 2014 06:42:02 +0000
http://www.hindawi.com/journals/tswj/2014/147801/
The numerical integration of Hamiltonian systems with oscillating solutions is considered in this paper. A diagonally implicit symplectic ninestages RungeKutta method with algebraic order 6 and dispersion order 8 is presented. Numerical experiments with some Hamiltonian oscillatory problems are presented to show the proposed method is as competitive as the existing same type RungeKutta methods.
Y. H. Cong and C. X. Jiang
Copyright © 2014 Y. H. Cong and C. X. Jiang. All rights reserved.

Recent Progress on Nonlinear Schrödinger Systems with Quadratic Interactions
Mon, 31 Mar 2014 14:01:31 +0000
http://www.hindawi.com/journals/tswj/2014/214821/
The study of nonlinear Schrödinger systems with quadratic interactions has attracted much attention in the recent years. In this paper, we summarize time decay estimates of small solutions to the systems under the mass resonance condition in 2dimensional space. We show the existence of wave operators and modified wave operators of the systems under some mass conditions in dimensional space, where . The existence of scattering operators and finite time blowup of the solutions for the systems in higher space dimensions is also shown.
Chunhua Li and Nakao Hayashi
Copyright © 2014 Chunhua Li and Nakao Hayashi. All rights reserved.

On the Limit Cycles of a Class of Planar Singular Perturbed Differential Equations
Mon, 31 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/379897/
Relaxation oscillations of twodimensional planar singular perturbed systems with a layer equation exhibiting canard cycles are studied. The canard cycles under consideration contain two turning points and two jump points. We suppose that there exist three parameters permitting generic breaking at both the turning points and the connecting fast orbit. The conditions of one (resp., two, three) relaxation oscillation near the canard cycles are given by studying a map from the space of phase parameters to the space of breaking parameters.
Yuhai Wu and Jingjing Zhou
Copyright © 2014 Yuhai Wu and Jingjing Zhou. All rights reserved.

Blowup Phenomena for the Compressible Euler and EulerPoisson Equations with Initial Functional Conditions
Sun, 30 Mar 2014 11:40:54 +0000
http://www.hindawi.com/journals/tswj/2014/580871/
We study, in the radial symmetric case, the finite time life span of the compressible Euler or EulerPoisson equations in . For time , we can define a functional associated with the solution of the equations and some testing function . When the pressure function of the governing equations is of the form , where is the density function, is a constant, and , we can show that the nontrivial solutions with nonslip boundary condition will blow up in finite time if satisfies some initial functional conditions defined by the integrals of . Examples of the testing functions include , , , , and . The corresponding blowup result for the 1dimensional nonradial symmetric case is also given.
Sen Wong and Manwai Yuen
Copyright © 2014 Sen Wong and Manwai Yuen. All rights reserved.

Discontinuous Mixed Covolume Methods for Parabolic Problems
Sun, 30 Mar 2014 08:51:28 +0000
http://www.hindawi.com/journals/tswj/2014/867863/
We present the semidiscrete and the backward Euler fully discrete discontinuous mixed covolume schemes for parabolic problems on triangular meshes. We give the error analysis of the discontinuous mixed covolume schemes and obtain optimal order error estimates in discontinuous and firstorder error estimate in .
Ailing Zhu and Ziwen Jiang
Copyright © 2014 Ailing Zhu and Ziwen Jiang. All rights reserved.

Fixed Points of Contractive Mappings in MetricLike Spaces
Sun, 30 Mar 2014 07:44:55 +0000
http://www.hindawi.com/journals/tswj/2014/471827/
We discuss topological structure of metriclike spaces and demonstrate a fundamental lemma for the convergence of sequences. As an application we prove certain fixed point results in the setup of such spaces for different types of contractive mappings. Finally, some periodic point results in metriclike spaces are obtained. Two examples are presented in order to verify the effectiveness and applicability of our main results.
Nawab Hussain, Jamal Rezaei Roshan, Vahid Parvaneh, and Zoran Kadelburg
Copyright © 2014 Nawab Hussain et al. All rights reserved.

A Time Delay PredatorPrey System with ThreeStageStructure
Thu, 27 Mar 2014 07:19:14 +0000
http://www.hindawi.com/journals/tswj/2014/512838/
A predatorprey system was studied that has a discrete delay, stagestructure, and BeddingtonDeAngelis functional response, where predator species has three stages, immature, mature, and old age stages. By using of Mawhin's continuous theorem of coincidence degree theory, a sufficient condition is obtained for the existence of a positive periodic solution.
Qiaoqin Gao and Zhen Jin
Copyright © 2014 Qiaoqin Gao and Zhen Jin. All rights reserved.

The Existence of Periodic Orbits and Invariant Tori for Some 3Dimensional Quadratic Systems
Wed, 26 Mar 2014 08:02:41 +0000
http://www.hindawi.com/journals/tswj/2014/705703/
We use the normal form theory, averaging method, and integral manifold theorem to study the existence of limit cycles in LotkaVolterra systems and the existence of invariant tori in quadratic systems in .
Yanan Jiang, Maoan Han, and Dongmei Xiao
Copyright © 2014 Yanan Jiang et al. All rights reserved.

Upper Semicontinuity of Pullback Attractors for the 3D Nonautonomous BenjaminBonaMahony Equations
Wed, 26 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/853139/
We will study the upper semicontinuity of
pullback attractors for the 3D nonautonomouss BenjaminBonaMahony
equations with external force perturbation terms. Under some regular assumptions, we can prove the pullback attractors
of equation , converge to the global
attractor of the abovementioned equation with
for any .
Xinguang Yang, Xiaosong Wang, Juntao Li, and Lingrui Zhang
Copyright © 2014 Xinguang Yang et al. All rights reserved.

An Analysis on Local Convergence of Inexact NewtonGauss Method for Solving Singular Systems of Equations
Wed, 26 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/752673/
We study the local convergence properties of inexact NewtonGauss method for singular systems of equations. Unified estimates of radius of convergence balls for one kind of singular systems of equations with constant rank derivatives are obtained. Application to the Smale point estimate theory is provided and some important known results are extended and/or improved.
Fangqin Zhou
Copyright © 2014 Fangqin Zhou. All rights reserved.

Bifurcation Analysis in Models for VectorBorne Diseases with Logistic Growth
Tue, 25 Mar 2014 12:00:50 +0000
http://www.hindawi.com/journals/tswj/2014/195864/
We establish and study vectorborne models with logistic and exponential growth of vector and host populations, respectively. We discuss and analyses the existence and stability of equilibria. The model has backward bifurcation and may have no, one, or two positive equilibria when the basic reproduction number is less than one and one, two, or three endemic equilibria when is greater than one under different conditions. Furthermore, we prove that the diseasefree equilibrium is stable if is less than 1, it is unstable otherwise. At last, by numerical simulation, we find rich dynamical behaviors in the model. By taking the natural death rate of host population as a bifurcation parameter, we find that the system may undergo a backward bifurcation, saddlenode bifurcation, Hopf bifurcation, BogdanovTakens bifurcation, and cusp bifurcation with the saturation parameter varying. The natural death rate of host population is a crucial parameter. If the natural death rate is higher, then the host population and the disease will die out. If it is smaller, then the host and vector population will coexist. If it is middle, the period solution will occur. Thus, with the parameter varying, the disease will spread, occur periodically, and finally become extinct.
Guihua Li and Zhen Jin
Copyright © 2014 Guihua Li and Zhen Jin. All rights reserved.

Numerical Modeling of the Photothermal Processing for Bubble Forming around Nanowire in a Liquid
Mon, 24 Mar 2014 12:20:29 +0000
http://www.hindawi.com/journals/tswj/2014/794630/
An accurate computation of the temperature is an important factor in determining the shape of a bubble around a nanowire immersed in a liquid. The study of the physical phenomenon consists in solving a photothermic coupled problem between light and nanowire. The numerical multiphysic model is used to study the variations of the temperature and the shape of the created bubble by illumination of the nanowire. The optimization process, including an adaptive remeshing scheme, is used to solve the problem through a finite element method. The study of the shape evolution of the bubble is made taking into account the physical and geometrical parameters of the nanowire. The relation between the sizes and shapes of the bubble and nanowire is deduced.
Anis Chaari, Laurence GiraudMoreau, Thomas Grosges, and Dominique Barchiesi
Copyright © 2014 Anis Chaari et al. All rights reserved.

Bifurcations of Orbit and Inclination Flips Heteroclinic Loop with Nonhyperbolic Equilibria
Sun, 23 Mar 2014 13:05:40 +0000
http://www.hindawi.com/journals/tswj/2014/585609/
The bifurcations of
heteroclinic loop with one nonhyperbolic equilibrium and one
hyperbolic saddle are considered, where the nonhyperbolic
equilibrium is supposed to undergo a transcritical bifurcation;
moreover, the heteroclinic loop has an orbit flip and an inclination
flip. When the nonhyperbolic equilibrium does not undergo a
transcritical bifurcation, we establish the coexistence and
noncoexistence of the periodic orbits and homoclinic orbits. While
the nonhyperbolic equilibrium undergoes the transcritical
bifurcation, we obtain the noncoexistence of the periodic orbits and
homoclinic orbits and the existence of two or three heteroclinic
orbits.
Fengjie Geng and Junfang Zhao
Copyright © 2014 Fengjie Geng and Junfang Zhao. All rights reserved.

Existence and Uniqueness Theorems for Impulsive Fractional Differential Equations with the TwoPoint and Integral Boundary Conditions
Sun, 23 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/918730/
We study a boundary value problem for the system of nonlinear impulsive fractional differential equations of order involving the twopoint and integral boundary conditions. Some new results on existence and uniqueness of a solution are established by using fixed point theorems. Some illustrative examples are also presented. We extend previous results even in the integer case .
M. J. Mardanov, N. I. Mahmudov, and Y. A. Sharifov
Copyright © 2014 M. J. Mardanov et al. All rights reserved.

A Maximal Element Theorem in FWCSpaces and Its Applications
Thu, 20 Mar 2014 09:11:18 +0000
http://www.hindawi.com/journals/tswj/2014/890696/
A maximal element theorem is proved in finite weakly convex spaces (FWCspaces, in short) which have no linear, convex, and topological structure. Using the maximal element theorem, we develop new existence theorems of solutions to variational relation problem, generalized equilibrium problem, equilibrium problem with lower and upper bounds, and minimax problem in FWCspaces. The results represented in this paper unify and extend some known results in the literature.
Haishu Lu, Qingwen Hu, and Yulin Miao
Copyright © 2014 Haishu Lu et al. All rights reserved.

MeanVariance Portfolio Selection for DefinedContribution Pension Funds with Stochastic Salary
Thu, 20 Mar 2014 07:17:04 +0000
http://www.hindawi.com/journals/tswj/2014/826125/
This paper focuses on a continuoustime dynamic meanvariance portfolio selection problem of definedcontribution pension funds with stochastic salary, whose risk comes from both financial market and nonfinancial market. By constructing a special Riccati equation as a continuous (actually a viscosity) solution to the HJB equation, we obtain an explicit closed form solution for the optimal investment portfolio as well as the efficient frontier.
Chubing Zhang
Copyright © 2014 Chubing Zhang. All rights reserved.

On the Shape of Limit Cycles That Bifurcate from Isochronous Center
Wed, 19 Mar 2014 14:18:03 +0000
http://www.hindawi.com/journals/tswj/2014/320406/
New idea and algorithm are proposed to compute asymptotic expression of limit cycles bifurcated from the isochronous center. Compared with known inverse integrating factor method, new algorithm to analytically computing shape of limit cycle proposed in this paper is simple and easy to apply. The applications of new algorithm to some examples are also given.
Guang Chen and Yuhai Wu
Copyright © 2014 Guang Chen and Yuhai Wu. All rights reserved.

Dynamic Properties of the Solow Model with Bounded Technological Progress and TimetoBuild Technology
Wed, 19 Mar 2014 13:44:04 +0000
http://www.hindawi.com/journals/tswj/2014/908629/
We introduce a timetobuild technology in a Solow model with bounded technological progress. Our analysis shows that the system may be asymptotically stable, or it can produce stability switches and Hopf bifurcations when time delay varies. The direction and the stability criteria of the bifurcating periodic solutions are obtained by the normal form theory and the center manifold theorem. Numerical simulations confirms the theoretical results.
Luca Guerrini and Mauro Sodini
Copyright © 2014 Luca Guerrini and Mauro Sodini. All rights reserved.

A Domain Decomposition Method for Time Fractional ReactionDiffusion Equation
Wed, 19 Mar 2014 09:01:53 +0000
http://www.hindawi.com/journals/tswj/2014/681707/
The computational complexity of onedimensional time fractional reactiondiffusion equation is compared with for classical integer reactiondiffusion equation. Parallel computing is used to overcome this challenge. Domain decomposition method (DDM) embodies large potential for parallelization of the numerical solution for fractional equations and serves as a basis for distributed, parallel computations. A domain decomposition algorithm for time fractional reactiondiffusion equation with implicit finite difference method is proposed. The domain decomposition algorithm keeps the same parallelism but needs much fewer iterations, compared with Jacobi iteration in each time step. Numerical experiments are used to verify the efficiency of the obtained algorithm.
Chunye Gong, Weimin Bao, Guojian Tang, Yuewen Jiang, and Jie Liu
Copyright © 2014 Chunye Gong et al. All rights reserved.

On HardyPachpatteCopson's Inequalities
Tue, 18 Mar 2014 07:08:21 +0000
http://www.hindawi.com/journals/tswj/2014/607347/
We establish new inequalities similar to HardyPachpatteCopson’s type inequalities. These results in special cases yield some of the recent results.
ChangJian Zhao and WingSum Cheung
Copyright © 2014 ChangJian Zhao and WingSum Cheung. All rights reserved.

A Note on the Solutions of Some Nonlinear Equations Arising in ThirdGrade Fluid Flows: An Exact Approach
Mon, 17 Mar 2014 08:26:34 +0000
http://www.hindawi.com/journals/tswj/2014/109128/
In this communication, we utilize some basic symmetry
reductions to transform the governing nonlinear partial differential
equations arising in the study of thirdgrade fluid flows into ordinary
differential equations. We obtain some simple closedform steadystate
solutions of these reduced equations. Our solutions are valid for the whole
domain [0,∞) and also satisfy the physical boundary conditions. We
also present the numerical solutions for some of the underlying equations.
The graphs corresponding to the essential physical parameters of the flow
are presented and discussed.
Taha Aziz and F. M. Mahomed
Copyright © 2014 Taha Aziz and F. M. Mahomed. All rights reserved.

A Novel Iterative Scheme and Its Application to Differential Equations
Sun, 16 Mar 2014 12:46:14 +0000
http://www.hindawi.com/journals/tswj/2014/605376/
The purpose of this paper is to employ an alternative approach to reconstruct the standard variational iteration algorithm II proposed by He, including Lagrange multiplier, and to give a simpler formulation of Adomian decomposition and modified Adomian decomposition method in terms of newly proposed variational iteration methodII (VIM). Through careful investigation of the earlier variational iteration algorithm and Adomian decomposition method, we find unnecessary calculations for Lagrange multiplier and also repeated calculations involved in each iteration, respectively. Several examples are given to verify the reliability and efficiency of the method.
Yasir Khan, F. Naeem, and Zdeněk Šmarda
Copyright © 2014 Yasir Khan et al. All rights reserved.

Some Refinements and Generalizations of I. Schur Type Inequalities
Sun, 16 Mar 2014 11:23:21 +0000
http://www.hindawi.com/journals/tswj/2014/709358/
Recently, extensive researches on estimating the value of e have been studied. In this paper, the structural characteristics of I. Schur type inequalities are exploited to generalize the corresponding inequalities by variable parameter techniques. Some novel upper and lower bounds for the I. Schur inequality have also been obtained and the upper bounds may be obtained with the help of Maple and automated proving package (Bottema). Numerical examples are employed to demonstrate the reliability of the approximation of these new upper and lower bounds, which improve some known results in the recent literature.
XianMing Gu, TingZhu Huang, WeiRu Xu, HouBiao Li, Liang Li, and XiLe Zhao
Copyright © 2014 XianMing Gu et al. All rights reserved.

Anisotropic Hardy Spaces of MusielakOrlicz Type with Applications to Boundedness of Sublinear Operators
Sun, 16 Mar 2014 08:06:43 +0000
http://www.hindawi.com/journals/tswj/2014/306214/
Let be a MusielakOrlicz function and an expansive dilation. In this paper, the authors introduce the anisotropic Hardy space of MusielakOrlicz type, , via the grand maximal function. The authors then obtain some realvariable characterizations of in terms of the radial, the nontangential, and the tangential maximal functions, which generalize the known results on the anisotropic Hardy space with and are new even for its weighted variant. Finally, the authors characterize these spaces by anisotropic atomic decompositions. The authors also obtain the finite atomic decomposition characterization of , and, as an application, the authors prove that, for a given admissible triplet , if is a sublinear operator and maps all atoms with (or all continuous atoms with ) into uniformly bounded elements of some quasiBanach spaces , then uniquely extends to a bounded sublinear operator from to . These results are new even for anisotropic OrliczHardy spaces on .
Baode Li, Dachun Yang, and Wen Yuan
Copyright © 2014 Baode Li et al. All rights reserved.

Nonoscillatory Solutions for System of Neutral Dynamic Equations on Time Scales
Sun, 16 Mar 2014 07:33:49 +0000
http://www.hindawi.com/journals/tswj/2014/768215/
We will discuss nonoscillatory solutions to the dimensional functional system of neutral type dynamic equations on time scales. We will establish some sufficient conditions for nonoscillatory solutions with the property .
Zhanhe Chen, Taixiang Sun, Qi Wang, and Hongjian Xi
Copyright © 2014 Zhanhe Chen et al. All rights reserved.

On the Iterative Methods of Linearization, Decrease of Order and Dimension of the KarmanType PDEs
Sun, 16 Mar 2014 07:12:17 +0000
http://www.hindawi.com/journals/tswj/2014/792829/
Iterative methods to achieve a suitable linearization as well as a decrease of the order and dimension of nonlinear partial differential equations of the eighth order into the biharmonic and Poissontype differential equations with their simultaneous linearization are proposed in this work. Validity and reliability of the obtained results are discussed using computer programs developed by the authors.
A. V. Krysko, J. Awrejcewicz, S. P. Pavlov, M. V. Zhigalov, and V. A. Krysko
Copyright © 2014 A. V. Krysko et al. All rights reserved.

On Ulam's Type Stability of the Cauchy Additive Equation
Sun, 16 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/540164/
We prove a general result on Ulam's type stability of the functional equation , in the class of functions mapping a commutative group into a commutative group. As a consequence, we deduce from it some hyperstability outcomes. Moreover, we also show how to use that result to improve some earlier stability estimations given by Isaac and Rassias.
Janusz Brzdęk
Copyright © 2014 Janusz Brzdęk. All rights reserved.

A Directed Continuous Time Random Walk Model with Jump Length Depending on Waiting Time
Thu, 13 Mar 2014 12:21:34 +0000
http://www.hindawi.com/journals/tswj/2014/182508/
In continuum onedimensional space, a coupled directed continuous time random walk model is proposed, where the random walker jumps toward one direction and the waiting time between jumps affects the subsequent jump. In the proposed model, the LaplaceLaplace transform of the probability density function of finding the walker at position at time is completely determined by the Laplace transform of the probability density function of the waiting time. In terms of the probability density function of the waiting time in the Laplace domain, the limit distribution of the random process and the corresponding evolving equations are derived.
Long Shi, Zuguo Yu, Zhi Mao, and Aiguo Xiao
Copyright © 2014 Long Shi et al. All rights reserved.

Strong Convergence Theorems for a Common Fixed Point of a Finite Family of Bregman Weak Relativity Nonexpansive Mappings in Reflexive Banach Spaces
Thu, 13 Mar 2014 08:17:18 +0000
http://www.hindawi.com/journals/tswj/2014/493450/
We introduce an iterative process for finding an element of a common fixed point of a finite family of Bregman weak relatively nonexpansive mappings. Our theorems improve and unify most of the results that have been proved for this important class of nonlinear operators.
Habtu Zegeye and Naseer Shahzad
Copyright © 2014 Habtu Zegeye and Naseer Shahzad. All rights reserved.

A Parallel Algorithm for the TwoDimensional Time Fractional Diffusion Equation with Implicit Difference Method
Wed, 12 Mar 2014 12:53:01 +0000
http://www.hindawi.com/journals/tswj/2014/219580/
It is very time consuming to solve fractional differential equations. The computational complexity of twodimensional fractional differential equation (2DTFDE) with iterative implicit finite difference method is . In this paper, we present a parallel algorithm for 2DTFDE and give an indepth discussion about this algorithm. A task distribution model and data layout with virtual boundary are designed for this parallel algorithm. The experimental results show that the parallel algorithm compares well with the exact solution. The parallel algorithm on single Intel Xeon X5540 CPU runs 3.16–4.17 times faster than the serial algorithm on single CPU core. The parallel efficiency of 81 processes is up to 88.24% compared with 9 processes on a distributed memory cluster system. We do think that the parallel computing technology will become a very basic method for the computational intensive fractional applications in the near future.
Chunye Gong, Weimin Bao, Guojian Tang, Yuewen Jiang, and Jie Liu
Copyright © 2014 Chunye Gong et al. All rights reserved.

An Osgood Type Regularity Criterion for the 3D Boussinesq Equations
Tue, 11 Mar 2014 09:26:20 +0000
http://www.hindawi.com/journals/tswj/2014/563084/
We consider the threedimensional Boussinesq equations, and obtain an Osgood type regularity criterion in terms of the velocity gradient.
Qiang Wu, Lin Hu, and Guili Liu
Copyright © 2014 Qiang Wu et al. All rights reserved.

Minimal Solution of Singular LR Fuzzy Linear Systems
Tue, 11 Mar 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/517218/
In this paper, the singular LR fuzzy linear system is introduced. Such systems are divided into two parts: singular consistent LR fuzzy linear systems and singular inconsistent LR fuzzy linear systems. The capability of the generalized inverses such as Drazin inverse, pseudoinverse, and {1}inverse in finding minimal solution of singular consistent LR fuzzy linear systems is investigated.
M. Nikuie and M. Z. Ahmad
Copyright © 2014 M. Nikuie and M. Z. Ahmad. All rights reserved.

Contractive Maps in Locally Transitive Relational Metric Spaces
Mon, 10 Mar 2014 13:49:53 +0000
http://www.hindawi.com/journals/tswj/2014/169358/
Some fixed point results are given for a class of MeirKeeler contractive maps acting on metric spaces endowed with locally transitive relations. Technical connections with the related statements due to Berzig et al. (2014) are also being discussed.
Mihai Turinici
Copyright © 2014 Mihai Turinici. All rights reserved.

Improved DelayDependent Stability Conditions for MIMO Networked Control Systems with Nonlinear Perturbations
Mon, 10 Mar 2014 13:06:10 +0000
http://www.hindawi.com/journals/tswj/2014/196927/
This paper provides improved time delaydependent stability criteria for multiinput and multioutput (MIMO) network control systems (NCSs) with nonlinear perturbations. Without the stability assumption on the neutral operator after the descriptor approach, the new proposed stability theory is less conservative than the existing stability condition. Theoretical proof is given in this paper to demonstrate the effectiveness of the proposed stability condition.
Jiuwen Cao
Copyright © 2014 Jiuwen Cao. All rights reserved.

On the Higher Power Sums of Reciprocal HigherOrder Sequences
Mon, 10 Mar 2014 09:57:08 +0000
http://www.hindawi.com/journals/tswj/2014/521358/
Let be a higherorder linear recursive sequence. In this paper, we use the properties of error estimation and the analytic method to study the reciprocal sums of higher power of higherorder sequences. Then we establish several new and interesting identities relating to the infinite and finite sums.
Zhengang Wu and Jin Zhang
Copyright © 2014 Zhengang Wu and Jin Zhang. All rights reserved.

A Procedure to Construct Exact Solutions of Nonlinear Fractional Differential Equations
Mon, 10 Mar 2014 08:31:38 +0000
http://www.hindawi.com/journals/tswj/2014/489495/
We use the fractional transformation to convert the nonlinear
partial fractional differential equations with the nonlinear ordinary
differential equations. The Expfunction method is extended to solve
fractional partial differential equations in the sense of the modified
RiemannLiouville derivative. We apply the Expfunction method to the
time fractional SharmaTassoOlver equation, the space fractional Burgers
equation, and the time fractional fmKdV equation. As a result, we obtain some
new exact solutions.
Özkan Güner and Adem C. Cevikel
Copyright © 2014 Özkan Güner and Adem C. Cevikel. All rights reserved.

A New Mixed Element Method for a Class of TimeFractional Partial Differential Equations
Sun, 09 Mar 2014 11:16:03 +0000
http://www.hindawi.com/journals/tswj/2014/141467/
A kind of new mixed element method for timefractional partial differential
equations is studied. The Caputofractional derivative of time direction is approximated
by twostep difference method and the spatial direction is discretized by a new mixed element
method, whose gradient belongs to the simple space replacing the complex
space. Some a priori error estimates in norm for the scalar unknown and in norm for its gradient . Moreover, we also discuss a priori error estimates in norm for the scalar unknown .
Yang Liu, Hong Li, Wei Gao, Siriguleng He, and Zhichao Fang
Copyright © 2014 Yang Liu et al. All rights reserved.

An Inequality of Meromorphic Functions and Its Application
Thu, 06 Mar 2014 08:07:33 +0000
http://www.hindawi.com/journals/tswj/2014/242851/
By applying Ahlfors theory of covering surface, we establish a fundamental inequality of meromorphic function dealing with multiple values in an angular domain. As an application, we prove the existence of some new singular directions for a meromorphic function , namely a Bloch direction and a pseudoT direction for .
Zhaojun Wu, Yuxian Chen, and Zuxing Xuan
Copyright © 2014 Zhaojun Wu et al. All rights reserved.

Homotopic Approximate Solutions for the Perturbed CKdV Equation with Variable Coefficients
Wed, 05 Mar 2014 16:41:24 +0000
http://www.hindawi.com/journals/tswj/2014/593642/
This work concerns how to find the double periodic form of approximate solutions of the perturbed combined KdV (CKdV) equation with variable coefficients by using the homotopic mapping method. The obtained solutions may degenerate into the approximate solutions of hyperbolic function form and the approximate solutions of trigonometric function form in the limit cases. Moreover, the first order approximate solutions and the second order approximate solutions of the variable coefficients CKdV equation in perturbation are also induced.
Dianchen Lu, Tingting Chen, and Baojian Hong
Copyright © 2014 Dianchen Lu et al. All rights reserved.

On a New Efficient SteffensenLike Iterative Class by Applying a Suitable SelfAccelerator Parameter
Mon, 03 Mar 2014 08:39:12 +0000
http://www.hindawi.com/journals/tswj/2014/769758/
It is attempted to present an efficient and free derivative class of Steffensenlike methods for solving nonlinear equations. To this end, firstly, we construct an optimal eighthorder threestep uniparameter without memory of iterative methods. Then the selfaccelerator parameter is estimated using Newton’s
interpolation in such a way that it improves its convergence order from 8 to 12 without any extra function evaluation. Therefore, its efficiency index is increased from 81/4 to 121/4 which is the main feature of this class. To show applicability of the proposed methods, some numerical illustrations are presented.
Taher Lotfi and Elahe Tavakoli
Copyright © 2014 Taher Lotfi and Elahe Tavakoli. All rights reserved.

Stability of Nonlinear Dirichlet BVPs Governed by Fractional Laplacian
Sun, 02 Mar 2014 14:22:57 +0000
http://www.hindawi.com/journals/tswj/2014/920537/
We consider a class of partial differential equations with the fractional Laplacian and the homogeneous
Dirichlet boundary data. Some sufficient condition under which the solutions of the equations considered depend continuously on parameters is stated. The application of the results to some optimal control problem is presented. The methods applied in the paper make use of the variational structure of the problem.
Dorota Bors
Copyright © 2014 Dorota Bors. All rights reserved.

VIMBased Dynamic Sparse Grid Approach to Partial Differential Equations
Thu, 27 Feb 2014 16:28:30 +0000
http://www.hindawi.com/journals/tswj/2014/390148/
Combining the variational iteration method (VIM) with the sparse grid theory, a dynamic sparse grid approach for nonlinear PDEs is proposed in this paper. In this method, a multilevel interpolation operator is constructed based on the sparse grids theory firstly. The operator is based on the linear combination of the basic functions and independent of them. Second, by means of the precise integration method (PIM), the VIM is developed to solve the nonlinear system of ODEs which is obtained from the discretization of the PDEs. In addition, a dynamic choice scheme on both of the inner and external grid points is proposed. It is different from the traditional interval wavelet collocation method in which the choice of both of the inner and external grid points is dynamic. The numerical experiments show that our method is better than the traditional wavelet collocation method, especially in solving the PDEs with the Nuemann boundary conditions.
ShuLi Mei
Copyright © 2014 ShuLi Mei. All rights reserved.

Stability Analysis of Impulsive Control Systems with Finite and Infinite Delays
Thu, 27 Feb 2014 13:53:19 +0000
http://www.hindawi.com/journals/tswj/2014/932395/
This paper studies impulsive control systems with finite and
infinite delays. Several stability criteria are established by employing
the largest and smallest eigenvalue of matrix. Our sufficient conditions
are less restrictive than the ones in the earlier literature. Moreover,
it is shown that by using impulsive control, the delay systems can be
stabilized even if it contains no stable matrix. Finally, some numerical
examples are discussed to illustrate the theoretical results.
Xuling Wang, Xiaodi Li, and Gani Tr. Stamov
Copyright © 2014 Xuling Wang et al. All rights reserved.

On Positive Radial Solutions for a Class of Elliptic Equations
Tue, 25 Feb 2014 07:18:10 +0000
http://www.hindawi.com/journals/tswj/2014/507312/
A class of elliptic boundary value problem in an exterior domain is considered under some conditions concerning the first eigenvalue of the relevant linear operator, where the variables of nonlinear term need not to be separated. Several new theorems on the existence and multiplicity of positive radial solutions are obtained by means of fixed point index theory. Our conclusions are essential improvements of the results in Lan and Webb (1998), Lee (1997), Mao and Xue (2002), Stańczy (2000), and Han and Wang (2006).
Ying Wu and Guodong Han
Copyright © 2014 Ying Wu and Guodong Han. All rights reserved.

Nonprobabilistic Solution of Uncertain Vibration Equation of Large Membranes Using Adomian Decomposition Method
Mon, 24 Feb 2014 09:32:29 +0000
http://www.hindawi.com/journals/tswj/2014/308205/
This paper proposes a new technique based on double parametric form of fuzzy numbers to handle the uncertain vibration equation for very large membrane for different particular cases. Uncertainties present in the initial condition and the wave velocity of free vibration are modelled through Gaussian convex normalised fuzzy set. Using the single parametric form of fuzzy number, the original fuzzy vibration equation is converted first to an interval fuzzy vibration equation. Next this equation is transformed to crisp form by applying double parametric form of fuzzy numbers. Finally the same governing equation is solved by Adomian decomposition method (ADM) symbolically to obtain the uncertain bounds. The present methods are very simple and effective. Obtained results are depicted in terms of plots to show the efficiency and powerfulness of the present analysis. Results obtained by the methods with new techniques are compared with existing results in special cases.
Smita Tapaswini and S. Chakraverty
Copyright © 2014 Smita Tapaswini and S. Chakraverty. All rights reserved.

Multiple Control Strategies for Prevention of Avian Influenza Pandemic
Mon, 24 Feb 2014 08:12:47 +0000
http://www.hindawi.com/journals/tswj/2014/949718/
We present the prevention of avian influenza pandemic by adjusting multiple control functions in the humantohuman transmittable avian influenza model. First we show the existence of the optimal control problem; then by using both analytical and
numerical techniques, we investigate the costeffective control effects for the prevention of transmission of disease. To do this, we use three control functions, the effort to reduce the number of contacts with human infected with mutant avian influenza, the antiviral treatment of infected individuals, and the effort to reduce the number of infected birds. We completely characterized the optimal control and compute numerical solution of the optimality system by using an iterative method.
Roman Ullah, Gul Zaman, and Saeed Islam
Copyright © 2014 Roman Ullah et al. All rights reserved.

Analysis of EyringPowell Fluid in Helical Screw Rheometer
Mon, 24 Feb 2014 08:07:51 +0000
http://www.hindawi.com/journals/tswj/2014/143968/
This paper aims to study the flow of an incompressible, isothermal EyringPowell fluid in a helical screw rheometer. The complicated geometry of the helical screw rheometer is simplified by “unwrapping or flattening” the channel, lands, and the outside rotating barrel, assuming the width of the channel is larger as compared to the depth. The developed second order nonlinear differential equations are solved by using Adomian decomposition method. Analytical expressions are obtained for the velocity profiles, shear stresses, shear at wall, force exerted on fluid, volume flow rates, and average velocity. The effect of nonNewtonian parameters, pressure gradients, and flight angle on the velocity profiles is noticed with the help of graphical representation. The observation confirmed the vital role of involved parameters during the extrusion process.
A. M. Siddiqui, T. Haroon, and M. Zeb
Copyright © 2014 A. M. Siddiqui et al. All rights reserved.

A GaussKuzmin Theorem for Continued Fractions Associated with Nonpositive Integer Powers of an Integer
Sun, 23 Feb 2014 13:57:39 +0000
http://www.hindawi.com/journals/tswj/2014/984650/
We consider a family of interval maps which are generalizations of the Gauss transformation.
For the continued fraction expansion arising from , we solve a GaussKuzmintype problem.
Dan Lascu
Copyright © 2014 Dan Lascu. All rights reserved.

Control Problems for Semilinear Neutral Differential Equations in Hilbert Spaces
Sun, 23 Feb 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/431978/
We construct some results on the regularity of solutions and the approximate controllability for neutral functional differential equations with unbounded principal operators in Hilbert spaces. In order to establish the controllability of the neutral equations, we first consider the existence and regularity of solutions of the neutral control system by using fractional power of operators and the local Lipschitz continuity of nonlinear term. Our purpose is to obtain the existence of solutions and the approximate controllability for neutral functional differential control systems without using many of the strong restrictions considered in the previous literature. Finally we give a simple example to which our main result can be applied.
JinMun Jeong and Seong Ho Cho
Copyright © 2014 JinMun Jeong and Seong Ho Cho. All rights reserved.

Some New Type Sigma Convergent Sequence Spaces and Some New Inequalities
Thu, 20 Feb 2014 13:38:49 +0000
http://www.hindawi.com/journals/tswj/2014/589765/
We have discussed some important problems about the spaces and of Cesàro sigma convergent and Cesàro null sequence.
Kuddusi Kayaduman and Mehmet Şengönül
Copyright © 2014 Kuddusi Kayaduman and Mehmet Şengönül. All rights reserved.

Definition and Properties of the Libera Operator on Mixed Norm Spaces
Thu, 20 Feb 2014 11:14:48 +0000
http://www.hindawi.com/journals/tswj/2014/590656/
We consider the action of the operator on a class of “mixed norm” spaces of analytic functions on the unit disk, , defined by the requirement , where , , , and is a nonnegative integer. This class contains Besov spaces, weighted Bergman spaces, Dirichlet type spaces, HardySobolev spaces, and so forth. The expression need not be defined for analytic in the unit disk, even for . A sufficient, but not necessary, condition is that . We identify the indices , , , and for which is well defined on , acts from to , the implication holds. Assertion extends some known results, due to Siskakis and others, and contains some new ones. As an application of we have a generalization of Bernstein’s theorem on absolute convergence of power series that belong to a Hölder class.
Miroslav Pavlovic
Copyright © 2014 Miroslav Pavlovic. All rights reserved.

Approximate Series Solution of Nonlinear Singular Boundary Value Problems Arising in Physiology
Thu, 20 Feb 2014 08:54:44 +0000
http://www.hindawi.com/journals/tswj/2014/945872/
We introduce an efficient recursive scheme based on Adomian decomposition
method (ADM) for solving nonlinear singular boundary value problems. This approach is based on a modification of the ADM; here we use all the boundary conditions to derive an integral equation before establishing the recursive scheme for the solution components. In fact, we develop the recursive scheme without any undetermined coefficients while computing the solution components. Unlike the classical ADM, the proposed method avoids solving a sequence of nonlinear algebraic or transcendental equations for the undetermined coefficients. The approximate solution is obtained in the form of series with easily calculable components. The uniqueness of the solution is discussed. The convergence and error
analysis of the proposed method are also established. The accuracy and reliability of the proposed method are examined by four numerical examples.
Randhir Singh, Jitendra Kumar, and Gnaneshwar Nelakanti
Copyright © 2014 Randhir Singh et al. All rights reserved.

Strong Convergence Algorithm for Split Equilibrium Problems and Hierarchical Fixed Point Problems
Thu, 20 Feb 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/390956/
The purpose of this paper is to investigate the problem of finding the approximate element of the common set of solutions of a split equilibrium problem and a hierarchical fixed point problem in a real Hilbert space. We establish the strong convergence of the proposed method under some mild conditions. Several special cases are also discussed. Our main result extends and improves some wellknown results in the literature.
Abdellah Bnouhachem
Copyright © 2014 Abdellah Bnouhachem. All rights reserved.

New Stabilization for Dynamical System with Two Additive TimeVarying Delays
Tue, 18 Feb 2014 14:51:18 +0000
http://www.hindawi.com/journals/tswj/2014/315817/
This paper provides a new delaydependent stabilization criterion for systems with two additive timevarying delays. The novel functional is constructed, a tighter upper bound
of the derivative of the Lyapunov functional is obtained. These results have advantages over some existing ones because the combination of the delay decomposition technique and the reciprocally convex approach. Two examples are provided to demonstrate the less conservatism and effectiveness of the results in this paper.
Lianglin Xiong, Fan Yang, and Xiaozhou Chen
Copyright © 2014 Lianglin Xiong et al. All rights reserved.

A New Expanded Mixed Element Method for ConvectionDominated Sobolev Equation
Tue, 18 Feb 2014 13:07:49 +0000
http://www.hindawi.com/journals/tswj/2014/297825/
We propose and analyze a new expanded mixed element method, whose gradient belongs to the simple square integrable space instead of the classical H(div; Ω) space of Chen’s expanded mixed element method. We study the new expanded mixed element method for convectiondominated Sobolev equation, prove the existence and uniqueness for finite element solution, and introduce a new expanded mixed projection. We derive the optimal a priori error estimates in norm for the scalar unknown and a priori error estimates in norm for its gradient λ and its flux σ. Moreover, we obtain the optimal a priori error estimates in norm for the scalar unknown u. Finally, we obtained some numerical results to illustrate efficiency of the new method.
Jinfeng Wang, Yang Liu, Hong Li, and Zhichao Fang
Copyright © 2014 Jinfeng Wang et al. All rights reserved.

Local Generalized ()Derivations
Sun, 16 Feb 2014 15:25:18 +0000
http://www.hindawi.com/journals/tswj/2014/805780/
We study local generalized ()derivations on algebras generated by their idempotents and give some important applications of our results.
Ajda Fošner
Copyright © 2014 Ajda Fošner. All rights reserved.

A Class of Nonlocal Coupled Semilinear Parabolic System with Nonlocal Boundaries
Sun, 16 Feb 2014 13:21:03 +0000
http://www.hindawi.com/journals/tswj/2014/912356/
We investigate the positive solutions of the semilinear parabolic
system with coupled nonlinear nonlocal sources subject to weighted nonlocal Dirichlet boundary
conditions. The blowup and global existence criteria are obtained.
Hong Liu and Haihua Lu
Copyright © 2014 Hong Liu and Haihua Lu. All rights reserved.

HighOrder Compact Difference Scheme for the Numerical Solution of Time Fractional Heat Equations
Thu, 13 Feb 2014 16:07:21 +0000
http://www.hindawi.com/journals/tswj/2014/642989/
A highorder finite difference scheme is proposed for solving time fractional heat equations. The time fractional derivative is described in the RiemannLiouville sense. In the proposed scheme a new secondorder discretization, which is based on CrankNicholson method, is applied for the time fractional part and fourthorder accuracy compact approximation is applied for the secondorder space derivative. The spectral stability and the Fourier stability analysis of the difference scheme are shown. Finally a detailed numerical analysis, including tables, figures, and error comparison, is given to demonstrate the theoretical results and high accuracy of the proposed scheme.
Ibrahim Karatay and Serife R. Bayramoglu
Copyright © 2014 Ibrahim Karatay and Serife R. Bayramoglu. All rights reserved.

About Positivity of Green's Functions for Nonlocal Boundary Value Problems with Impulsive Delay Equations
Thu, 13 Feb 2014 09:22:53 +0000
http://www.hindawi.com/journals/tswj/2014/978519/
The impulsive delay differential equation is considered with nonlocal boundary condition Various results on existence and uniqueness of solutions and on positivity/negativity of the Green's functions for this equation are obtained.
Alexander Domoshnitsky and Irina Volinsky
Copyright © 2014 Alexander Domoshnitsky and Irina Volinsky. All rights reserved.

Stability, Boundedness, and Lagrange Stability of Fractional Differential Equations with Initial Time Difference
Wed, 12 Feb 2014 06:55:23 +0000
http://www.hindawi.com/journals/tswj/2014/939027/
Differential inequalities, comparison results, and sufficient conditions on initial time difference stability, boundedness, and Lagrange stability for fractional differential systems have been evaluated.
Muhammed Çiçek, Coşkun Yakar, and Bülent Oğur
Copyright © 2014 Muhammed Çiçek et al. All rights reserved.

Some New Traveling Wave Exact Solutions of the (2+1)Dimensional BoitiLeonPempinelli Equations
Tue, 11 Feb 2014 11:44:48 +0000
http://www.hindawi.com/journals/tswj/2014/743254/
We employ the complex method to obtain all meromorphic exact solutions of complex (2+1)dimensional BoitiLeonPempinelli equations (BLP system of equations). The idea introduced in this paper can be applied to other nonlinear evolution equations.
Our results show that all rational and simply periodic traveling wave exact solutions of the equations (BLP) are solitary wave solutions, the complex method is simpler than other methods, and there exist some rational solutions and simply periodic solutions which are not only new but also not degenerated successively by the elliptic function solutions. We believe that this method should play an important role for finding exact solutions in the mathematical physics. For these new traveling wave solutions, we give some computer simulations to illustrate our main results.
Jianming Qi, Fu Zhang, Wenjun Yuan, and Zifeng Huang
Copyright © 2014 Jianming Qi et al. All rights reserved.

Fixed Point Results for Generalized Chatterjea Type Contractive Conditions in Partially Ordered Metric Spaces
Tue, 11 Feb 2014 09:16:01 +0000
http://www.hindawi.com/journals/tswj/2014/341751/
In the framework of ordered metric spaces, fixed points of maps that satisfy the generalized Chatterjea type contractive conditions are obtained. The results presented in the paper generalize and extend several well known comparable results in the literature.
Safeer Hussain Khan, Mujahid Abbas, and Talat Nazir
Copyright © 2014 Safeer Hussain Khan et al. All rights reserved.

A Study of Frontier and Semifrontier in Intuitionistic Fuzzy Topological Spaces
Tue, 11 Feb 2014 06:39:22 +0000
http://www.hindawi.com/journals/tswj/2014/674171/
Notions of frontier and semifrontier in intuitionistic fuzzy topology have been studied and several of their properties, characterizations, and examples established. Many counterexamples have been presented to point divergences between the IF topology and its classical form. The paper also presents an open problem and one of its weaker forms.
Athar Kharal
Copyright © 2014 Athar Kharal. All rights reserved.

Approximation of Bivariate Functions via Smooth Extensions
Mon, 10 Feb 2014 13:53:22 +0000
http://www.hindawi.com/journals/tswj/2014/102062/
For a smooth bivariate function defined on a general domain with arbitrary shape, it is
difficult to do Fourier approximation or wavelet approximation. In order to solve these problems, in this paper,
we give an extension of the bivariate function on a general domain with arbitrary shape to a smooth, periodic
function in the whole space or to a smooth, compactly supported function in the whole space. These smooth
extensions have simple and clear representations which are determined by this bivariate function and some
polynomials. After that, we expand the smooth, periodic function into a Fourier series or a periodic wavelet
series or we expand the smooth, compactly supported function into a wavelet series. Since our extensions are
smooth, the obtained Fourier coefficients or wavelet coefficients decay very fast. Since our extension tools are
polynomials, the moment theorem shows that a lot of wavelet coefficients vanish. From this, with the help of
wellknown approximation theorems, using our extension methods, the Fourier approximation and the wavelet
approximation of the bivariate function on the general domain with small error are obtained.
Zhihua Zhang
Copyright © 2014 Zhihua Zhang. All rights reserved.

Some Properties of Solutions of a FunctionalDifferential Equation of Second Order with Delay
Mon, 10 Feb 2014 13:05:29 +0000
http://www.hindawi.com/journals/tswj/2014/878395/
Existence, uniqueness, data dependence (monotony, continuity, and differentiability with respect to parameter), and UlamHyers stability results for the solutions of a system of functionaldifferential equations with delays are proved. The techniques used are Perov’s fixed point theorem and weakly Picard operator theory.
Veronica Ana Ilea and Diana Otrocol
Copyright © 2014 Veronica Ana Ilea and Diana Otrocol. All rights reserved.

Generalized Uniqueness Theorem for Ordinary Differential Equations in Banach Spaces
Mon, 10 Feb 2014 09:05:32 +0000
http://www.hindawi.com/journals/tswj/2014/272479/
We consider nonlinear ordinary differential equations in Banach spaces. Uniqueness criterion for the Cauchy problem is given when any of the standard dissipativetype conditions does apply. A similar scalar result has been studied by Majorana (1991). Useful examples of reflexive Banach spaces whose positive cones have empty interior has been given as well.
Ezzat R. Hassan, M. Sh. Alhuthali, and M. M. AlGhanmi
Copyright © 2014 Ezzat R. Hassan et al. All rights reserved.

On Statistical Convergence of Order
Sun, 09 Feb 2014 09:48:44 +0000
http://www.hindawi.com/journals/tswj/2014/535419/
The idea of convergence of real sequences was introduced by Kostyrko et al., (2000/01) and also independently by Nuray and Ruckle (2000). In this paper, we introduce the concepts of statistical convergence of order and strong Cesàro summability of order of real sequences and investigated their relationship.
Mikail Et, Abdullah Alotaibi, and S. A. Mohiuddine
Copyright © 2014 Mikail Et et al. All rights reserved.

On the Singular Perturbations for Fractional Differential Equation
Sun, 09 Feb 2014 07:47:10 +0000
http://www.hindawi.com/journals/tswj/2014/752371/
The goal of this paper is to examine the possible extension of the singular perturbation differential equation to the concept of fractional order derivative. To achieve this, we presented a review of the concept of fractional calculus. We make use of the Laplace transform operator to derive exact solution of singular perturbation fractional linear differential equations. We make use of the methodology of three analytical methods to present exact and approximate solution of the singular perturbation fractional, nonlinear, nonhomogeneous differential equation. These methods are including the regular perturbation method, the new development of the variational iteration method, and the homotopy decomposition method.
Abdon Atangana
Copyright © 2014 Abdon Atangana. All rights reserved.

A New HighOrder Stable Numerical Method for Matrix Inversion
Thu, 06 Feb 2014 17:06:47 +0000
http://www.hindawi.com/journals/tswj/2014/830564/
A stable numerical method is proposed for matrix inversion. The new method is accompanied by theoretical proof to illustrate twelfthorder convergence. A discussion of how to achieve the convergence using an appropriate initial value is presented. The application of the new scheme for finding MoorePenrose inverse will also be pointed out analytically. The efficiency of the contributed iterative method is clarified on solving some numerical examples.
F. Khaksar Haghani and F. Soleymani
Copyright © 2014 F. Khaksar Haghani and F. Soleymani. All rights reserved.

Fuzzy Fixed Points Theorems for Fuzzy Mappings via Admissible Pair
Wed, 05 Feb 2014 11:43:34 +0000
http://www.hindawi.com/journals/tswj/2014/853032/
We define the concept of admissible for a pair of fuzzy mappings and establish the existence of common fuzzy fixed point theorem. Our result generalizes some useful results in the literature. We provide an example to support our result.
Maliha Rashid, Akbar Azam, and Nayyar Mehmood
Copyright © 2014 Maliha Rashid et al. All rights reserved.

Explicit Finite Difference Methods for the Delay Pseudoparabolic Equations
Tue, 04 Feb 2014 11:20:53 +0000
http://www.hindawi.com/journals/tswj/2014/497393/
Finite difference technique is applied to numerical solution of the initialboundary value problem for the semilinear delay Sobolev or pseudoparabolic equation. By the method of integral identities twolevel difference scheme is constructed. For the time integration the implicit rule is being used. Based on the method of energy estimates the fully discrete scheme is shown to be absolutely stable and convergent of order two in space and of order one in time. The error estimates are obtained in the discrete norm. Some numerical results confirming the expected behavior of the method are shown.
I. Amirali, G. M. Amiraliyev, M. Cakir, and E. Cimen
Copyright © 2014 I. Amirali et al. All rights reserved.

Coefficient Inequalities for a Subclass of pValent Analytic Functions
Tue, 04 Feb 2014 00:00:00 +0000
http://www.hindawi.com/journals/tswj/2014/801751/
The aim of this paper is to study the problem of coefficient bounds for a newly defined subclass of pvalent analytic functions. Many known results appear as special consequences of our work.
Muhammad Arif, Janusz Sokół, and Muhammad Ayaz
Copyright © 2014 Muhammad Arif et al. All rights reserved.

On the Long Time Simulation of ReactionDiffusion Equations with Delay
Mon, 03 Feb 2014 06:42:28 +0000
http://www.hindawi.com/journals/tswj/2014/186802/
For a consistent numerical method to be practically useful, it is widely accepted that it must preserve the asymptotic stability of the original continuous problem. However, in this study, we show that it may lead to unreliable numerical solutions in long time simulation even if a classical numerical method gives a larger stability region than that of the original continuous problem. Some numerical experiments on the reactiondiffusion equations with delay are presented to confirm our findings. Finally, some open problems on the subject are proposed.
Dongfang Li and Chengjian Zhang
Copyright © 2014 Dongfang Li and Chengjian Zhang. All rights reserved.

Dynamics of a Diffusive PredatorPrey Model with General Nonlinear Functional Response
Mon, 03 Feb 2014 06:29:19 +0000
http://www.hindawi.com/journals/tswj/2014/721403/
We study a diffusive predatorprey model with nonconstant death rate and general nonlinear functional response. Firstly, stability analysis of the equilibrium for reduced ODE system is discussed. Secondly, sufficient and necessary conditions which guarantee the predator and the prey species to be permanent are obtained. Furthermore, sufficient conditions for the global asymptotical stability of the unique positive equilibrium of the system are derived by using the method of Lyapunov function. Finally, we show that there are no nontrivial steady state solutions for certain parameter configuration.
Wensheng Yang
Copyright © 2014 Wensheng Yang. All rights reserved.