A primal-dual infeasible interior point algorithm for multiple objective linear programming (MOLP) problems was presented. In contrast to the current MOLP algorithm. moving through the interior of polytope but not con...A primal-dual infeasible interior point algorithm for multiple objective linear programming (MOLP) problems was presented. In contrast to the current MOLP algorithm. moving through the interior of polytope but not confining the iterates within the feasible region in our proposed algorithm result in a solution approach that is quite different and less sensitive to problem size, so providing the potential to dramatically improve the practical computation effectiveness.展开更多
The dual-frequency grating measurement theory is proposed in order to carry out the measurement of a discontinuous object. Firstly, the reason why frequency spectra are produced by low frequency gratings and high freq...The dual-frequency grating measurement theory is proposed in order to carry out the measurement of a discontinuous object. Firstly, the reason why frequency spectra are produced by low frequency gratings and high frequency gratings in the field of frequency is analysed, and the relationship between the wrapped-phase and the unwrapping-phase is discussed. Secondly, a method to combine the advantages of the two kinds of gratings is proposed： one stripe is produced in the mutation part of the object measured by a suitable low frequency grating designed by MATLAB, then the phase produced by the low frequency grating need not be unfolded. The integer series of stripes is produced by a high frequency grating designed by MATLAB based on the frequency ratio of the two kinds of gratings and the high frequency wrapped-phase, and the high frequency unwrapping-phase is then obtained. In order to verify the correctness of the theoretical analysis, a steep discontinuous object of 600×600 pixels and 10.00 mm in height is simulated and a discontinuous object of ladder shape which is 32.00 mm in height is used in experiment. Both the simulation and the experiment can restore the discontinuous object height accurately by using the dual-frequency grating measurement theory.展开更多
机场安检作为航班离港的重要环节,降低安检区运营成本和减少旅客等待时间是非常必要的。针对安检排队系统中的瓶颈问题,提出优化布局的思想,并利用安检排队系统中现有的资源,根据资源优化思想,以深圳宝安国际机场为例,建立安检排队系统...机场安检作为航班离港的重要环节,降低安检区运营成本和减少旅客等待时间是非常必要的。针对安检排队系统中的瓶颈问题,提出优化布局的思想,并利用安检排队系统中现有的资源,根据资源优化思想,以深圳宝安国际机场为例,建立安检排队系统双目标优化模型。通过NSGA-Ⅱ算法,获得资源配置方案的Pareto最优解集,然后使用逼近理想解排序法(technique for order preferency by similarity to an ideal solution,TOPSIS),对Pareto最优解集进行排序,得出综合效益最优的配置方案:Ⅰ级系统开放通道数为17个,Ⅱ级系统开放通道数为35个。结果表明,该研究方法消除了运营成本和等待时间量纲间的差异,为存在博弈的优化目标提供了解决思路。展开更多
基金Supported by the Doctoral Educational Foundation of China of the Ministry of Education(20020486035)
文摘A primal-dual infeasible interior point algorithm for multiple objective linear programming (MOLP) problems was presented. In contrast to the current MOLP algorithm. moving through the interior of polytope but not confining the iterates within the feasible region in our proposed algorithm result in a solution approach that is quite different and less sensitive to problem size, so providing the potential to dramatically improve the practical computation effectiveness.
基金Project supported by the Science-Technology Program Research Foundation of Hunan Province, China (Grant No 2009FJ3187)the 11th Five-year Plan for Key Construction Academic Subject (Optics) of Hunan Province, China (Grant No 06GXCD02)
文摘The dual-frequency grating measurement theory is proposed in order to carry out the measurement of a discontinuous object. Firstly, the reason why frequency spectra are produced by low frequency gratings and high frequency gratings in the field of frequency is analysed, and the relationship between the wrapped-phase and the unwrapping-phase is discussed. Secondly, a method to combine the advantages of the two kinds of gratings is proposed： one stripe is produced in the mutation part of the object measured by a suitable low frequency grating designed by MATLAB, then the phase produced by the low frequency grating need not be unfolded. The integer series of stripes is produced by a high frequency grating designed by MATLAB based on the frequency ratio of the two kinds of gratings and the high frequency wrapped-phase, and the high frequency unwrapping-phase is then obtained. In order to verify the correctness of the theoretical analysis, a steep discontinuous object of 600×600 pixels and 10.00 mm in height is simulated and a discontinuous object of ladder shape which is 32.00 mm in height is used in experiment. Both the simulation and the experiment can restore the discontinuous object height accurately by using the dual-frequency grating measurement theory.
文摘机场安检作为航班离港的重要环节,降低安检区运营成本和减少旅客等待时间是非常必要的。针对安检排队系统中的瓶颈问题,提出优化布局的思想,并利用安检排队系统中现有的资源,根据资源优化思想,以深圳宝安国际机场为例,建立安检排队系统双目标优化模型。通过NSGA-Ⅱ算法,获得资源配置方案的Pareto最优解集,然后使用逼近理想解排序法(technique for order preferency by similarity to an ideal solution,TOPSIS),对Pareto最优解集进行排序,得出综合效益最优的配置方案:Ⅰ级系统开放通道数为17个,Ⅱ级系统开放通道数为35个。结果表明,该研究方法消除了运营成本和等待时间量纲间的差异,为存在博弈的优化目标提供了解决思路。
