An Optimization Model for Guiding Pedestrian–Vehicle Mixed Flows During an Emergency Evacuation

In most metropolitan areas, an emergency evacuation may require a potentially large number of pedestrians to walk some distance to access their passenger cars or resort to transit systems. In this process, the massive number of pedestrians may place a tremendous burden on vehicles in the roadway network, especially at critical intersections. Thus, the effective road enforcement of the vehicle and pedestrian flows and the proper coordination between these two flows at critical intersections during a multimodal evacuation process is a critical issue in evacuation planning. This article presents an integrated linear model for the design of optimized flow plans for massive mixed pedestrian–vehicle flows within an evacuation zone. The optimized flow can also be used to generate signal timing plans at critical intersections. In addition, the linear nature of the model can circumvent the computational burden to apply in large-scale networks. An illustrating example of the evacuation around the M&T Bank Stadium in downtown Baltimore, MD, is presented and used to demonstrate the model's capability to address the complex interactions between vehicle and pedestrian flows within an evacuation zone. Results of simulation experiments verify the applicability of our model to a real-world scenario and further indicate that accounting for such conflicting movements will yield more reliable estimation of an evacuation's required clearance time.     

Brittleness analysis and important nodes discovery in large time-evolving complex networks

The brittleness analysis and important nodes detection have been a hot spot in the complex networks. How to get the overall feature of the whole network and how to find out some important nodes are requisites to solve these problems. In this paper, we adopt the trace of the adjacency matrix and the centrality of the complex networks to give a quantitative and qualitative analysis of networks being studied. Results show that the k-shell plays a more important role than the degree centrality and the betweenness in finding important nodes, and it can also be used to give direction on the immunization and maintenance of complex networks.     

推动现代物流信息化建设,加快徐州港集团转型发展

为了将徐州港建成京杭运河物流中心,必须进一步推动现代物流信息化建设,形成更加适应未来港口现代物流发展的企业信息与管理运行机制。同时,加强物流信息的整合,构筑港口物流服务与交易平台。只有加强管理,才能有效提高徐州港的集疏运能力和服务水平,提升港口竞争力。     

W钢带补强隧道衬砌缺陷施工技术

以新建铁路贵阳枢纽白云至龙里北联络线龙洞堡机场隧道施工为例,详细介绍了隧道二次衬砌补强缺陷整治的原则、材料要求、方法及措施、施工工艺,重点阐述了嵌W钢带配碳纤维布整治隧道二衬缺陷的方法及工艺,对地下工程病害及缺陷整治可起到借鉴作用,对今后类似地下工程的施工具有一定的参考价值。     

砂岩隧道洞渣集料在宜巴高速公路中的应用

为探讨宜巴太阳岭砂岩洞渣用作混凝土集料的可行性,对母岩抗压饱和强度、物理化学成分、碱活性进行分析,采用简化砂、石联产工艺生产出砂岩碎石、机制砂并对其基本技术指标进行检测.研究表明,该砂岩洞渣为硬质砂岩,加工的碎石、机制砂可满足混凝土集料技术指标要求.以宜巴高速公路为依托,成功地将砂岩集料配制的混凝土应用于隧道二衬与桥梁桩基、墩柱.     

驾驶员夜间行车视觉增强新技术

针对驾驶员在高速公路夜间和恶劣天气下行车,由于光照条件降低导致驾驶员视觉受限,对路面距离识别和感知速度降低,一旦车速过高极易发生危险造成重大事故等情况,介绍了一套新型主动发光警示诱导系统,详细阐述了其工作原理和系统架构,并通过现场试验证明所开发的系统能够主动对驾驶员在夜间行驶过程中进行警示诱导,有效地增强了人眼的视觉,减低事故发生的概率.     

十载风雨 海事助推太仓古港新远航

这里,是六百多年前,郑和率船队七下西洋的起航地;这里,号称七百年前的"六国码头"、"天下第一码头"。这就是江苏太仓,位于长江三角洲冲积平原上,与崇明岛隔江相望,是长江入沪前的最后一道关口。2001年1月18日,江苏太仓海事处挂牌成立。自此,太仓海事人牢牢抓住国家加快内河航运发展,江苏     

链斗卸船机整机吊装上岸方法研究

在不能采用滚装牵引上岸的情况下,通过制定科学的工艺方案和严格施工,实现了两台链斗卸船机的整机吊装上岸就位,做到了保证施工进度和基本不影响港口正常生产.     

道家思想在家居设计中的应用研究

道家思想是中华文明的重要组成部分,其思想和理念渗透到我们生活的方方面面,道家思想中的精髓对现代健康生活方式的培养具有重要意义。在当前产品设计领域,道家思想还没有得到很好的应用,也缺少相关的理论研究。文章对道家思想之于设计的价值进行了探讨,以家居设计为例,从道家思想和产品实用功能、形态美感、精神气质等方面的结合角度进行研究,探讨其应用的原则和方法,并结合实际设计案例验证它的可行性。