汽车电站自主开发策划理论研究

从产品自主开发在市场竞争中的重要性入手,分析了汽车电站新产品开发策划理论现状和需求,提出了从市场研究、需求转换、综合评价三方面来搭建汽车电站自主开发策划理论体系架构,分析市场研究、需求转换、概念设计对该体系的重要性。对汽车电站新产品的自主开发具有指导意义。     

自行车交通系统政策和规划及实施探讨——以丹麦欧登塞市为例

分析、研究了丹麦欧登塞市发展自行车的政策和规划,包括提高自行车出行比例、安全和质量目标,自行车道路规划、环境控制区、自行车设施和技术措施组成,研究认为,欧登塞市的自行车政策和规划是多项政策与规划的协调集成.政策与规划的制定与实施采用动态循环的政策质量监督管理程序,用行动计划推动实施,通过评估给出实施效果.文章认为,长期战略,综合、集成的政策和规划,完善的政策制度、集成与逐步创新发展自行车政策和规划将给予中国城市最直接的启示.     

复杂海况下基于强化学习的USV局部路径规划方法研究（英文）

Conducting hydrodynamic and physical motion simulation tests using a large-scale self-propelled model under actual wave conditions is an important means for researching environmental adaptability of ships. During the navigation test of the self-propelled model, the complex environment including various port facilities, navigation facilities, and the ships nearby must be considered carefully, because in this dense environment the impact of sea waves and winds on the model is particularly significant. In order to improve the security of the self-propelled model, this paper introduces the Q learning based on reinforcement learning combined with chaotic ideas for the model's collision avoidance, in order to improve the reliability of the local path planning. Simulation and sea test results show that this algorithm is a better solution for collision avoidance of the self navigation model under the interference of sea winds and waves with good adaptability.     

一种航迹网络图粒子群优化生成方法

提出一种航迹网络图粒子群优化生成方法。首先介绍了航迹网络图的基本结构,然后将网络图看作一个粒子,以网络图中所有节点的坐标来描述粒子的位置信息。为了使航迹网络图整体代价较优,设定合适的粒子适应度函数对航迹网络图进行优化,评价指标包括两项：航迹网络图中所有航迹段的代价总和以及随航迹片段数目减少而增加的惩罚代价。实验结果表明,该算法能有效地优化航迹网络图,得到航迹片段较为丰富的航迹网络。     

Local path planning method of the self-propelled model based on reinforcement learning in complex conditions

Conducting hydrodynamic and physical motion simulation tests using a large-scale self-propelled model under actual wave conditions is an important means for researching environmental adaptability of ships. During the navigation test of the self-propelled model, the complex environment including various port facilities, navigation facilities, and the ships nearby must be considered carefully, because in this dense environment the impact of sea waves and winds on the model is particularly significant. In order to improve the security of the self-propelled model, this paper introduces the Q learning based on reinforcement learning combined with chaotic ideas for the model＇s collision avoidance, in order to improve the reliability of the local path planning. Simulation and sea test results show that this algorithm is a better solution for collision avoidance of the self navigation model under the interference of sea winds and waves with good adaptability.     

Pick‐up locations and bus allocation for transit‐based evacuation planning with demand uncertainty

This paper develops a decision‐support model for transit‐based evacuation planning under demand uncertainty. Demand uncertainty refers to the uncertainty associated with the number of transit‐dependent evacuees. A robust optimization model is proposed to determine the optimal pick‐up points for evacuees to assemble, and allocate available buses to transport the assembled evacuees between the pick‐up locations and different public shelters. The model is formulated as a mixed‐integer linear program and is solved via a cutting plane scheme. The numerical example based on the Sioux Falls network demonstrates that the robust plan yields lower total evacuation time and is reliable in serving the realized evacuee demand. Copyright © 2012 John Wiley & Sons, Ltd.     

关于可持续发展战略下的绿色城市交通规划思考

伴随着社会经济的快速发展,城市规模的逐步扩张,我国城市出现了交通拥挤、资源短缺、环境污染等诸多问题。这些都促使城市交通规划的可持续发展成为日益关注的焦点。鉴于此,通过阐述绿色城市交通规划发展的历程,分析了传统城市交通规划存在的不足,并对城市建设可持续发展战略下绿色城市交通规划提出了建议。     

城市道路出入口关键系数模型研究

综合考虑出入口交通流量、交通事故、运行速度和视距等方面,提出出入口关键系数的概念,并构建计算模型.通过实例分析,得出试验路段出入口关键系数值,并应用聚类分析法进行等级划分,可以为出入口规划与管理提供决策参考.     

市政规划建设及更新改造过程中的问题

伴随着城市建设的快速发展,城市在规划和改造中出现了一系列的问题,如果无法及时发现、分析和解决这些问题,将对未来城市的发展产生一定影响。鉴于此,分析市政规划建设及更新改造过程中存在的问题,从城市规划设计、规划实施、规划管理等方面提出相应的解决措施。     

城镇道路交通拥堵问题及改善措施

机动车数量的快速增长,城镇人口密度的不断增加,导致城镇交通发展问题日益凸显,如果不能得到有效解决和根本治理,必将对我国经济的持续、快速、健康发展构成严重威胁。道路交通的基本要素是人、车、路。通过交通三要素特性分析,找出交通拥堵问题的具体原因,并从政策方面、驾驶员行为方面和道路规划建设方面提出了相应的措施建议,为交通拥堵现象的缓解提供参考。