Subjects: Computer Science >> Integration Theory of Computer Science submitted time 2018-05-02 Cooperative journals: 《计算机应用研究》
Abstract： The goals of improving system efficiency and customer satisfaction can be achieved effectively through a rational scheduling for bottleneck machine in motor vehicle maintenance workshop. On the one hand, the promotion of system efficiency can be achieved by optimizing the make-span() ; on the other hand, customer satisfaction is affected by subjective factor, it’s necessary to do customer satisfaction into consideration while establishing an objective function of the scheduling problem. Combined with Behavioral Science Theory, the paper mixed people’s bounded rationality into service resources scheduling problem related to the customer. Firstly, take customer expected waiting time as a reference point by virtue of value function in the prospect theory, then establish customer dissatisfaction function towards waiting time. On the base of it, establish a multi-objective mathematical model combined with the objective of resource efficiency, assignment of tasks and resource constraints. Secondly, design genetic algorithm which is corresponding to the scheduling problem and then solve it. Ultimately, verify the feasibility and validity of model and algorithm by simulating example.
Subjects: Dynamic and Electric Engineering >> Engineering Thermophysics submitted time 2017-11-07 Cooperative journals: 《工程热物理学报》
Abstract：本文实验研究了完全超疏水脉动热管和蒸发段为超亲水，冷凝段和绝热段为超疏水的组合表面脉动热管的性能。超疏水表面自由能较低、滞后角小、液滴在表面容易移动。实验发现，与紫铜脉动热管汽液界面呈凹界面不同，超疏水表面汽液界面呈凸界面。组合表面脉动热管汽液界面的长度显著大于完全超疏水脉动热管。与紫铜脉动热管相比，组合脉动热管液弹脉动的振幅增加，而完全超疏水脉动热管蒸发段出现部分烧干，液弹脉动的振幅显著下降。
Subjects: Dynamic and Electric Engineering >> Engineering Thermophysics submitted time 2017-05-24 Cooperative journals: 《工程热物理学报》
Abstract：本文通过控制NaOH 和 (NH4)2S2O8溶液的刻蚀时间，制备了具有不同接触角滞后超疏水区的0.5 mm-0.5 mm超疏水-疏水组合表面，可视化研究了常压纯蒸汽下液滴脱落半径，冲刷周期，尺寸分布. 电镜表征结果表明，刻蚀时间越长，所制备超疏水表面的微纳结构越细，导致液滴接触角滞后增加。在0.5-0.5 mm超疏水-疏水组合表面冷凝过程中，存在两种排液行为：液滴横向抽吸和液滴跨区脱落。随着超疏水区接触角滞后的增加，对液滴的抽吸作用越强。液滴跨区脱落直径随着超疏水区接触角滞后的增加有减小趋势，表面冲刷周期随超疏水区接触角滞后的增加而减小；与完全疏水表面相比，组合表面疏水区域液滴尺寸较小，主要集中在50 um以内。
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