Research Article
A Novel Method for Evaluating Dredging Productivity Using a Data Envelopment Analysis-Based Technique
Table 2
Daily dredging productivity by the traditional dredging productivity method.
| Work day | Input | Output | Output/Input | Convert to single input | Daily dredging (M3) | Daily dredging productivity |
| 1 | 0.422 | 1668 | 3950.526 | 2 | 0.422 | 1683 | 3986.053 | 3 | 0.545 | 1701 | 3118.500 | 4 | 0.545 | 1702 | 3120.333 | 5 | 0.323 | 1700 | 5259.375 | 6 | 0.428 | 1696 | 3960.000 | 7 | 0.533 | 1665 | 3121.875 | 8 | 0.657 | 1701 | 2590.754 | 9 | 0.440 | 1716 | 3896.422 | 10 | 0.440 | 1720 | 3905.505 | 11 | 0.602 | 1706 | 2833.792 | 12 | 0.614 | 1717 | 2795.773 | 13 | 0.398 | 1729 | 4344.442 | 14 | 0.404 | 1737 | 4299.075 | 15 | 0.743 | 1747 | 2349.905 | 16 | 0.756 | 1759 | 2328.088 | 17 | 0.539 | 1770 | 3281.461 | 18 | 0.545 | 1782 | 3267.000 | 19 | 0.774 | 1792 | 2316.031 | 20 | 0.780 | 1798 | 2305.725 | 21 | 0.570 | 1826 | 3205.213 | 22 | 0.582 | 1855 | 3188.281 | 23 | 0.810 | 1871 | 2309.589 | 24 | 0.927 | 1895 | 2043.627 | 25 | 0.939 | 1925 | 2049.194 | 26 | 0.952 | 1950 | 2049.363 | 27 | 0.964 | 1985 | 2059.906 | 28 | 0.982 | 2041 | 2078.796 | 29 | 1.000 | 2093 | 2093.000 | 30 | 0.976 | 2089 | 2140.901 | 31 | 0.958 | 2083 | 2175.285 | 32 | 0.933 | 2076 | 2224.286 | 33 | 0.915 | 2067 | 2258.642 | 34 | 0.897 | 2058 | 2294.392 | 35 | 0.879 | 2047 | 2329.345 | 36 | 0.861 | 2036 | 2365.775 | 37 | 0.842 | 2024 | 2402.590 | 38 | 0.830 | 2012 | 2423.212 | 39 | 0.812 | 1999 | 2461.455 | 40 | 0.800 | 1986 | 2482.500 | 41 | 0.788 | 1973 | 2504.192 | 42 | 0.776 | 1959 | 2525.273 | 43 | 0.764 | 1946 | 2548.333 | 44 | 0.752 | 1932 | 2570.806 | 45 | 0.745 | 1918 | 2572.927 | 46 | 0.733 | 1905 | 2597.727 | 47 | 0.721 | 1891 | 2621.975 | 48 | 0.715 | 1877 | 2624.619 | 49 | 0.703 | 1863 | 2649.957 | 50 | 0.697 | 1850 | 2654.348 | 51 | 0.685 | 1836 | 2680.885 | 52 | 0.679 | 1823 | 2685.670 | 53 | 0.673 | 1809 | 2689.054 | 54 | 0.667 | 1796 | 2694.000 |
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