A Decision Support Method for Truck Scheduling and Storage Allocation Problem at Container

来源 :Tsinghua Science and Technology | 被引量 : 0次 | 上传用户:cultra
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Truck scheduling and storage allocation, as two separate subproblems in port operations, have been deeply studied in past decades. However, from the operational point of view, they are highly interdependent. Storage allocation for import containers has to balance the travel time and queuing time of each container in yard. This paper proposed an integer programming model handling these two problems as a whole. The objective of this model is to reduce congestion and waiting time of container trucks in the terminal so as to decrease the makespan of discharging containers. Due to the inherent complexity of the prob-lem, a genetic algorithm and a greedy heuristic algorithm are designed to attain near optimal solutions. It shows that the heuristic algorithm can achieve the optimal solution for small-scale problems. The solutions of small-and large-scale problems obtained from the heuristic algorithm are better than those from the genetic algorithm. Truck scheduling and storage allocation, as two separate subproblems in port operations, have been deeply studied in past decades. However, from the operational point of view, they are highly interdependent. Storage allocation for import containers has to balance the travel time and queuing time This paper proposed an integer programming model handling these two problems as a whole. The objective of this model is to reduce congestion and waiting time of container trucks in the terminal so as to decrease the makespan of discharging containers. Due to the inherent complexity of the prob-lem, a genetic algorithm and a greedy heuristic algorithm are designed to attain near optimal solutions. It shows that the heuristic algorithm can achieve the optimal solution for small-scale problems. The solutions of small-and large -scale problems obtained from the heuristic algorithm are better than those from the genetic algorithm.
其他文献
  目的:检测谷氨酸诱导大鼠脑微血管内皮细胞(RBMECs)信号传导通路关键调控因子eEF-2活化程度,研究耐药调控机制。方法:选取新生1-2天Wistar大鼠,保留脑微血管内皮细胞,并以DMEM
素描教学是高等艺术院校必修的基础课程,二十一世纪信息时代,知识结构正在发生重大改变,传统的素描教育模式影响着教学的进一步发展。在数字技术的作用下,素描教学模式的改革
  目的:本研究的目的为:(1)评估曾漏服至少一次抗癫痫药物的成年癫痫患者的依从性,和(2)确定患者不依从的原因以进行针对依从性障碍的干预。方法:通过调查问卷收集患者的人口学
你或许认为感冒是所有疾病中最最常见的,不就是宝宝流鼻涕;浑身发热吗?可是你能将普通感冒与流行性感冒区分开来吗?你会正确护理已感冒的宝宝吗?感冒是怎么回事? 感冒即上呼吸道感
平菇连作菇床巧用石灰水和草木灰、防杂增产效果好。现简介如下: (一)石灰水浸报纸。连作菇床杂菌多,布种前应先把菇床原培养料清理干净,曝晒、消毒,用干净、干燥、无霉变的
  目的:分析反射性癫痫的临床特征及辅助检查,随访患者预后。方法:回顾性分析2010-2013年在我院癫痫专病门诊的1 1例反射性癫痫患者临床特征及脑电表现,并对患者预后进行随访研
世界经济已经全面衰退,各国已经认识到要走出当前经济迷局,还得靠“内需”。继铁道部推出2万亿铁路投资计划后,上周交通运输部又提出5万亿基建投资计划。很显然,国家正试图通
小时候,二哥和几个同事联合养蜜蜂五年多,我在这五年多时间里,了解了很多关于蜜蜂的故事。  一箱正常的蜂群,大约有一万至一万五千多只蜜蜂。蜂群如军队,生活军事化。蜂王如同师长,蜂巢中的巢础数量好似旅、团、营、连、排的编制。它们组织有序,分工明确;纪律严明、劳动自觉。  蜂箱进出口有两只蜜蜂把守,如同师部站岗的士兵。  站岗的蜜蜂的任务,据专家说一是检查回巢蜜蜂是否采有劳动果实,是否失去了自卫武器(蜂
期刊
上海南京路的底楼商铺,每平方米的年租金大多已经超过1.5万元,最热商铺的年租金竟已超过两万元,而将纸张厚度的金箔平铺在地上,一平方米的价值大约只有1.6万元 Shanghai Nan
真实的环境作为客观存在,是不可操控和改变的,但对于摄影这一主观能动行为而言,通过“镜头的引导”——构图的取舍、拍摄角度的变化、焦距和光圈的控制——从而决定环境背景