随着全球气候变暖和海平面上升,台风发生的频次和强度呈逐年增大的趋势。由台风引发的灾害及带来的后果促使人们必须重新评估核电站的海岸防护标准。文中对核电安全规定中的"可能最大台风"(Probable Maximum Typhoon)、"...随着全球气候变暖和海平面上升,台风发生的频次和强度呈逐年增大的趋势。由台风引发的灾害及带来的后果促使人们必须重新评估核电站的海岸防护标准。文中对核电安全规定中的"可能最大台风"(Probable Maximum Typhoon)、"可能最大暴潮"(Probable Maximum Storm Surge)、"设计基准洪水"(Design Basic Flood)进行了概率分析,并用"双层嵌套多目标概率模式"(DLNMPM)对设计规范计算结果进行了修正。展开更多
With the global warming and sea level rising, it is widely recognized that there is an increasing tendency of typhoon occurrence frequency and intensity. The defenses code against typhoon attacks for nuclear power pla...With the global warming and sea level rising, it is widely recognized that there is an increasing tendency of typhoon occurrence frequency and intensity. The defenses code against typhoon attacks for nuclear power plant should be calibrated because of the increasing threat of typhoon disaster and severe consequences. This paper discusses the probabilistic approach of definitions about ＂probable maximum typhoon＂ and ＂probable maximum storm surge＂ in nuclear safety regulations of China and has made some design code calibrations by use of a newly proposed Double Layer Nested Mtdti-objective Probability Model （DLNMPM）.展开更多
针对突发重大疫情或灾害后实施应急救援过程中的物资调配急迫性与时效性以及多车型运输问题,本文构建了一种选址-调度双层模型.即,上层以总的运输代价最小化为目标,下层以配送代价(时间、距离和满意度)最小为目标的双层动态交互模型,同...针对突发重大疫情或灾害后实施应急救援过程中的物资调配急迫性与时效性以及多车型运输问题,本文构建了一种选址-调度双层模型.即,上层以总的运输代价最小化为目标,下层以配送代价(时间、距离和满意度)最小为目标的双层动态交互模型,同时考虑时间窗、配送覆盖范围限制以及运输车辆容量限制及距离等约束条件.根据模型特点,设计了一种混合嵌套算法,上层为新型排球超级联赛算法(New Volleyball Premier League Algorithm,NVPL),下层为改进的遗传算法(Improved Genetic Algorithm,IGA)来求解.采用了新冠疫情爆发期间全国药物临时配送中心选址和紧急调度运输背景的相关算例进行求解,并与双层遗传算法和双层粒子群算法作对比,验证了模型的有效性与算法的准确性.展开更多
文摘随着全球气候变暖和海平面上升,台风发生的频次和强度呈逐年增大的趋势。由台风引发的灾害及带来的后果促使人们必须重新评估核电站的海岸防护标准。文中对核电安全规定中的"可能最大台风"(Probable Maximum Typhoon)、"可能最大暴潮"(Probable Maximum Storm Surge)、"设计基准洪水"(Design Basic Flood)进行了概率分析,并用"双层嵌套多目标概率模式"(DLNMPM)对设计规范计算结果进行了修正。
基金supported by the Nationam Natural Science Foundation of China(Grant No.50679076)Office of State Flood Control and Drought Relief Headquarters of China(Grant No.20060120)
文摘With the global warming and sea level rising, it is widely recognized that there is an increasing tendency of typhoon occurrence frequency and intensity. The defenses code against typhoon attacks for nuclear power plant should be calibrated because of the increasing threat of typhoon disaster and severe consequences. This paper discusses the probabilistic approach of definitions about ＂probable maximum typhoon＂ and ＂probable maximum storm surge＂ in nuclear safety regulations of China and has made some design code calibrations by use of a newly proposed Double Layer Nested Mtdti-objective Probability Model （DLNMPM）.
文摘针对突发重大疫情或灾害后实施应急救援过程中的物资调配急迫性与时效性以及多车型运输问题,本文构建了一种选址-调度双层模型.即,上层以总的运输代价最小化为目标,下层以配送代价(时间、距离和满意度)最小为目标的双层动态交互模型,同时考虑时间窗、配送覆盖范围限制以及运输车辆容量限制及距离等约束条件.根据模型特点,设计了一种混合嵌套算法,上层为新型排球超级联赛算法(New Volleyball Premier League Algorithm,NVPL),下层为改进的遗传算法(Improved Genetic Algorithm,IGA)来求解.采用了新冠疫情爆发期间全国药物临时配送中心选址和紧急调度运输背景的相关算例进行求解,并与双层遗传算法和双层粒子群算法作对比,验证了模型的有效性与算法的准确性.
