Firdaus Udwadia

Personal Home Page

http://ae-www.usc.edu/bio/udwadia/

Articles in Scholarly Journals [Incomplete List]

  1. Time-delayed control design for active control of structures: principles and applications
    Structural Control and Health Monitoring, vol. 14, no. 1, pp. 27–61, 2007
  2. A unifying framework for robot control with redundant DOFs
    Autonomous Robots, vol. 24, no. 1, pp. 1–12, 2007
  3. Generalized LM-inverse of a matrix augmented by a column vector
    Applied Mathematics and Computation, vol. 190, no. 2, pp. 999–1006, 2007
  4. Explicit Poincaré equations of motion for general constrained systems. Part I. Analytical results
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 463, no. 2082, pp. 1421–1434, 2007
  5. Explicit Poincaré equations of motion for general constrained systems. Part II. Applications to multi-body dynamics and nonlinear control
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 463, no. 2082, pp. 1435–1446, 2007
  6. A dynamical model of terrorism
    Discrete Dynamics in Nature and Society, vol. 2006, Article ID 85653, 32 pages, 2006
  7. Time-Delayed Positive Velocity Feedback Control Design for Active Control of Structures
    Journal of Engineering Mechanics, vol. 132, no. 6, p. 690, 2006
  8. Explicit equations of motion for constrained mechanical systems with singular mass matrices and applications to multi-body dynamics
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 462, no. 2071, pp. 2097–2117, 2006
  9. Recursive Formulas for the Generalized LM-Inverse of a Matrix
    Journal of Optimization Theory and Applications, vol. 131, no. 1, pp. 1–16, 2006
  10. Active control of structures using time delayed positive feedback proportional control designs
    Structural Control and Health Monitoring, vol. 13, no. 1, pp. 536–552, 2006
  11. In Memory of Robert E. Kalaba
    Journal of Optimization Theory and Applications, vol. 127, no. 3, pp. 471–473, 2005
  12. Reflections on the Gauss Principle of Least Constraint
    Journal of Optimization Theory and Applications, vol. 127, no. 3, pp. 475–484, 2005
  13. Equations of Motion for Constrained Multibody Systems and their Control
    Journal of Optimization Theory and Applications, vol. 127, no. 3, pp. 627–638, 2005
  14. Recursive Determination of the Generalized Moore–Penrose M-Inverse of a Matrix
    Journal of Optimization Theory and Applications, vol. 127, no. 3, pp. 639–663, 2005
  15. Limitation and withdrawal of intensive therapy at the end of life: Practices in intensive care units in Mumbai, India*
    Critical Care Medicine, vol. 33, no. 6, pp. 1272–1275, 2005
  16. Structural Identification and Damage Detection from Noisy Modal Data
    Journal of Aerospace Engineering, vol. 18, no. 3, p. 179, 2005
  17. New General Principle of Mechanics and Its Application to General Nonideal Nonholonomic Systems
    Journal of Engineering Mechanics, vol. 131, no. 4, p. 444, 2005
  18. Is analytical dynamics a theoretical or an experimental science?
    Nonlinear Analysis, vol. 63, no. 5-7, pp. 692–698, 2005
  19. On constrained motion
    Applied Mathematics and Computation, vol. 164, no. 2, pp. 313–320, 2005
  20. Boundary control, quiet boundaries, super-stability and super-instability
    Applied Mathematics and Computation, vol. 164, no. 2, pp. 327–349, 2005
  21. Preface
    Applied Mathematics and Computation, vol. 164, no. 2, pp. 275–276, 2005
  22. An extension of Gauss's principle of least constraint
    International Journal of General Systems, vol. 33, no. 1, pp. 63–69, 2004
  23. Acceleration of Runge-Kutta integration schemes
    Discrete Dynamics in Nature and Society, vol. 2004, no. 2, pp. 307–314, 2004
  24. International Journal of Bifurcation and Chaos [in Applied Sciences and Engineering], vol. 14, no. 8, p. 2555, 2004
  25. Mechanical Systems With Nonideal Constraints: Explicit Equations Without the Use of Generalized Inverses
    Journal of Applied Mechanics, vol. 71, no. 5, p. 615, 2004
  26. A new perspective on the tracking control of nonlinear structural and mechanical systems
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 459, no. 2035, pp. 1783–1800, 2003
  27. Journal of Optimization Theory and Applications, vol. 117, no. 1, pp. 1–7, 2003
  28. Time delayed control of structural systems
    Earthquake Engineering & Structural Dynamics, vol. 32, no. 4, pp. 495–535, 2003
  29. Erratum
    Zeitschrift für angewandte Mathematik und Physik, vol. 54, no. 1, pp. 190–190, 2003
  30. Zeitschrift für angewandte Mathematik und Physik, vol. 53, no. 1, pp. 123–146, 2002
  31. On the foundations of analytical dynamics
    International Journal of Non-Linear Mechanics, vol. 37, no. 6, pp. 1079–1090, 2002
  32. Computational explorations into the dynamics of rings of coupled oscillators
    Applied Mathematics and Computation, vol. 129, no. 1, pp. 55–85, 2002
  33. What is the General Form of the Explicit Equations of Motion for Constrained Mechanical Systems?
    Journal of Applied Mechanics, vol. 69, no. 3, p. 335, 2002
  34. Explicit Equations of Motion for Mechanical Systems With Nonideal Constraints
    Journal of Applied Mechanics, vol. 68, no. 3, p. 462, 2001
  35. Analytical dynamics with constraint forces that do work in virtual displacements
    Applied Mathematics and Computation, vol. 121, no. 2-3, pp. 211–217, 2001
  36. An efficient and stable approach for computation of Lyapunov characteristic exponents of continuous dynamical systems
    Applied Mathematics and Computation, vol. 121, no. 2-3, pp. 219–259, 2001
  37. A Methodology for Collaborative Design Process and Conflict Analysis
    CIRP Annals - Manufacturing Technology, vol. 49, no. 1, pp. 69–73, 2000
  38. A note on the computation of the largest p LCEs of discrete dynamical systems
    Applied Mathematics and Computation, vol. 114, no. 2-3, pp. 205–214, 2000
  39. Nonideal Constraints and Lagrangian Dynamics
    Journal of Aerospace Engineering, vol. 13, no. 1, p. 17, 2000
  40. Fundamental Principles of Lagrangian Dynamics: Mechanical Systems with Non-ideal, Holonomic, and Nonholonomic Constraints
    Journal of Mathematical Analysis and Applications, vol. 251, no. 1, pp. 341–355, 2000
  41. A unified approach for the recursive determination of generalized inverses
    Computers & Mathematics with Applications, vol. 37, no. 1, pp. 125–130, 1999
  42. Journal of Optimization Theory and Applications, vol. 101, no. 3, pp. 509–521, 1999
  43. Some global properties of a pair of coupled maps: Quasi-symmetry, periodicity, and synchronicity
    Physica D: Nonlinear Phenomena, vol. 111, no. 1-4, pp. 16–26, 1998
  44. A memory-matrix-based identification methodology for structural and mechanical systems
    Earthquake Engineering & Structural Dynamics, vol. 27, no. 12, pp. 1465–1481, 1998
  45. CRITICAL CARE IN INDIA
    Critical Care Clinics, vol. 13, no. 2, pp. 317–330, 1997
  46. An efficient QR based method for the computation of Lyapunov exponents
    Physica D: Nonlinear Phenomena, vol. 101, no. 1-2, pp. 1–16, 1997
  47. Journal of Optimization Theory and Applications, vol. 92, no. 2, pp. 225–248, 1997
  48. Journal of Optimization Theory and Applications, vol. 94, no. 1, pp. 23–28, 1997
  49. Dynamics of coupled nonlinear maps and its application to ecological modeling
    Applied Mathematics and Computation, vol. 82, no. 2-3, pp. 137–179, 1997
  50. Equations of motion for mechanical systems: A unified approach
    International Journal of Non-Linear Mechanics, vol. 31, no. 6, pp. 951–958, 1996
  51. Response to Bucy's Comment on a Paper by Udwadia and Kalaba
    Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 452, no. 1948, pp. 1055–1056, 1996
  52. Equations of Motion for Mechanical Systems
    Journal of Aerospace Engineering, vol. 9, no. 3, p. 64, 1996
  53. Inequality constraints in the process of jumping
    Applied Mathematics and Computation, vol. 78, no. 2-3, pp. 163–173, 1996
  54. An alternate proof for the equation of motion for constrained mechanical systems
    Applied Mathematics and Computation, vol. 70, no. 2-3, pp. 339–342, 1995
  55. Constrained motion revisited
    Applied Mathematics and Computation, vol. 70, no. 1, pp. 67–76, 1995
  56. Convergence of iterative methods for nonclassically damped dynamic systems
    Applied Mathematics and Computation, vol. 61, no. 1, pp. 61–97, 1994
  57. Iterative methods for non-classically damped dynamic systems
    Earthquake Engineering & Structural Dynamics, vol. 23, no. 2, pp. 137–152, 1994
  58. Time delayed control of classically damped structural systems
    International Journal of Control, vol. 60, no. 5, pp. 687–713, 1994
  59. Methodology for Optimum Sensor Locations for Parameter Identification in Dynamic Systems
    Journal of Engineering Mechanics, vol. 120, no. 2, p. 368, 1994
  60. Comments on a Paper by Udwadia & Kalaba
    Proceedings of the Royal Society: Mathematical and Physical Sciences (1990-1995), vol. 444, no. 1920, pp. 253–255, 1994
  61. Tropical eosinophilia: A review
    Respiratory Medicine, vol. 87, no. 1, pp. 17–21, 1993
  62. Associative memory approach to the identification of structural and mechanical systems
    Journal of Optimization Theory and Applications, vol. 76, no. 2, pp. 207–223, 1993
  63. On motion
    Journal of the Franklin Institute, vol. 330, no. 3, pp. 571–577, 1993
  64. Further Results on Iterative Approaches to the Determination of the Response of Nonclassically Damped Systems
    Journal of Applied Mechanics, vol. 60, no. 1, p. 235, 1993
  65. Equations of Motion for Nonholonomic, Constrained Dynamical Systems via Gauss’s Principle
    Journal of Applied Mechanics, vol. 60, no. 3, p. 662, 1993
  66. Some convergence results related to the JOR iterative method for symmetric, positive-definite matrices
    Applied Mathematics and Computation, vol. 47, no. 1, pp. 37–45, 1992
  67. Noncollocated control of distributed-parameter nondispersive systems with tip inertias using time delays
    Applied Mathematics and Computation, vol. 47, no. 1, pp. 47–75, 1992
  68. On constrained motion
    Applied Mathematics and Computation, vol. 51, no. 1, pp. 85–86, 1992
  69. A New Perspective on Constrained Motion
    Proceedings of the Royal Society: Mathematical and Physical Sciences (1990-1995), vol. 439, no. 1906, pp. 407–410, 1992
  70. Noncollocated point control of nondispersive distributed-parameter systems using time delays
    Applied Mathematics and Computation, vol. 42, no. 1, pp. 23–63, 1991
  71. Autonomous dysfunction in severe tetanus
    Intensive Care Medicine, vol. 16, no. 8, pp. 520–520, 1990
  72. Nonclassically Damped Dynamic Systems: An Iterative Approach
    Journal of Applied Mechanics, vol. 57, no. 2, p. 423, 1990
  73. Chaotic dynamics of a piecewise cubic map
    Physical Review A, vol. 40, no. 7, pp. 4032–4044, 1989
  74. SIAM Review, vol. 31, no. 1, Article ID 1031004, 1989
  75. Period three may not mean chaos: An example of a piecewise linear map
    Computational Mechanics, vol. 5, no. 2-3, pp. 113–118, 1989
  76. Identification of large structures on orbit A survey
    Acta Astronautica, vol. 20, pp. 21–27, 1989
  77. Technological change in the military aircraft cockpit industry
    Technological Forecasting and Social Change, vol. 33, no. 1, pp. 55–62, 1988
  78. Trade deficits: A look beyond the economic view
    Technological Forecasting and Social Change, vol. 33, no. 2, pp. 109–118, 1988
  79. Simultaneous optimization of controlled structures
    Computational Mechanics, vol. 3, no. 4, pp. 275–282, 1988
  80. SIAM Journal on Applied Mathematics, vol. 48, no. 6, Article ID 0148083, 1988
  81. SIAM Journal on Control and Optimization, vol. 26, no. 6, Article ID 0326073, 1988
  82. The maximal expiratory flow-volume curve in normal subjects in India
    Chest, vol. 89, no. 6, pp. 852–856, 1986
  83. The Effect of Immigration Quotas on the Average Quality of Migrating Labor and Income Distribution
    Southern Economic Journal, vol. 52, no. 3, p. 785, 1986
  84. Management situations and the engineering mindset
    Technological Forecasting and Social Change, vol. 29, no. 4, pp. 387–397, 1986
  85. SIAM Journal on Applied Mathematics, vol. 45, no. 4, Article ID 0145040, 1985
  86. Periodic response of a sliding oscillator system to harmonic excitation
    Earthquake Engineering & Structural Dynamics, vol. 11, no. 1, pp. 135–146, 1983
  87. Non-parametric identification of a class of non-linear close-coupled dynamic systems
    Earthquake Engineering & Structural Dynamics, vol. 9, no. 4, pp. 385–409, 1981
  88. On product nonlinearities in stochastic differential equations
    Applied Mathematics and Computation, vol. 8, no. 1, pp. 35–49, 1981
  89. A methodology for locating strong motion arrays
    Earthquake Engineering & Structural Dynamics, vol. 8, no. 5, pp. 439–453, 1980
  90. SIAM Journal on Applied Mathematics, vol. 34, no. 1, Article ID 0134009, 1978
  91. Use of the fast fourier transform for frequency analysis of the first heart sound in normal man
    Medical & Biological Engineering, vol. 14, no. 1, pp. 69–73, 1976
  92. Time and amplitude dependent response of structures
    Earthquake Engineering & Structural Dynamics, vol. 2, no. 4, pp. 359–378, 1973