Study on the Organization Model of Wagon Flows in Railway Terminal

Railway terminal is an important part of railway network. Transport organization of railway terminal is the key of the railway transport organization. Moreover, the organization of transport work is based on the organization of wagon flows in the railway terminal. Because of the great amounts of equipment and a large number of train operations, the study on railway terminal transport organization is mostly focused on a marshalling station in railway terminal or a part of it. Systematic study taking railway terminal as a whole is very few. In this paper, the organization of wagon flows in a railway terminal is analyzed and a wagon flow model in a railway terminal is established. The main principles of organization of local trains are also presented.     

基于LBS的高速路网车辆行驶轨迹监控系统设计

针对目前高速公路联网收费存在的路径二义性、偷逃费、紧急救援问题,提出了基于LBS技术,对高速路网车辆行驶轨迹进行监控的解决思路。设计了系统架构和系统工作流程;分析了系统特点及关键技术;最后通过测试,实现了系统监控功能。     

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行人流特性分析及仿真模型参数标定目的在于为行人流仿真工作提供理论依据和基础数据。对国内综合交通客运枢纽——北京西直门地铁站行人流数据进行视频采集,采用统计分析软件SPSS对行人流参数数据进行筛选及拟合分析,建立了不同设施的行人流参数关系曲线及函数模型,研究结果表明,水平通道处行人流量与密度呈二次函数关系、流量与空间在某一临界点两侧分别呈二次函数及对数函数关系、速度与密度呈线性关系,楼梯处与之相似但特征点数值存在差异。在此基础上对社会力模型参数进行标定,给出了行人椭圆的长半轴的范围,并引入时间紧迫程度这一影响因子,确定期望速度为速度—密度函数与该影响因子的乘积。     

传统集装箱码头向自动化码头改造仿真分析

以国内某传统集装箱码头为例,提出2种向自动化码头改造升级的码头布局及装卸工艺,并通过仿真软件WITNESS进行仿真建模,输出仿真数据。根据仿真数据,对码头水平运输设备的数量配比进行仿真分析,并从堆场年通过能力、堆场作业能力、码头管理以及能耗成本4个方面对提出的两种工艺进行评估,选出一种较优工艺。     

Are the innovation processes in seaport terminal operations successful?

The maritime and port sector is widely considered conservative concerning the ability to introduce innovation in respect to other industries. This may be due to the lack of cooperative interactions among the several players involved. It does not mean that innovation does not occur in this industry. Along with some technical innovations, managerial, organizational, and cultural innovations also take place in the sector. The literature has considered the assessment and effects of the adoption of particular innovation, but still few studies underline the innovation path in a broad sense with a specific focus on terminal operators. The present article aims at filling this gap through a field analysis grouping together case studies developed in different world regions and examining the adoption path of innovation through a mix of three different techniques (i.e. the H- and I-indexes, a Systems of Innovation Analysis, and a Qualitative Comparative Analysis). Research outcomes underline how, even if no unique recipe for success can be found, specific factors (e.g. a ranking of innovation objectives, coordination among actors, and institutions) can influence the achievement of success. The analyses allow suggesting strategic and policy advice that may help link in a better way the innovation drivers with their actual effects.     

墨西哥曼萨尼约CMSA集装箱码头设计

曼萨尼约CMSA集装箱码头工程规模大、功能全、标准高。工程处于墨西哥西海岸强震区,后方紧邻红树林保护区和旅游区海滩。针对上述特点,围绕总体布局、结构抗震、环境保护等关键技术进行研究。按照国际设计标准和港区分期滚动开发思路,码头结构设计采用"弱柱强梁"理念,并埋设大断面过水生态箱涵保护环境。     

Dynamics and interactions between spot and forward freights in the dry bulk shipping market

Analyzing the interactions between spot and forward freight agreement (FFA) prices in the dry bulk shipping is important as they play a significant role for shipping companies to secure their profits and avoid potential risks in the volatile market. By applying the vector autoregression (VAR) and the vector error correction model (VECM), this paper identifies the long-run and mutual causal relationship between the spot and FFA prices on the BPI T/C and BCI C7 routes. Along with these cointegrating rates, exogenous factors such as the market demand and supply and some economic indices are also recognized as contributing variables for the dynamic movement of the spot and FFA prices. Importantly, the mean-reverting process is justified on both routes with different mechanisms. When the spot and FFA prices deviate from their equilibrium level in the short run, they will be adjusted to their long-run equilibrium more directly and clearly on the BPI T/C route than those on the BCI C7 route. It also indicates that this adjusting power has direction and size asymmetries on both routes. In addition, the impulse analysis indicates that the spot rate is more volatile than its corresponding FFA prices confronting innovations. The results of this study provide a reference to the participants in the dry bulk shipping market on the causes of fluctuation in spot and FFA prices and their interactions, which can be used to promote the risk management in the market.     

人工智能时代公安交通集成指挥平台在移动警务终端的应用

现阶段人工智能技术发展日渐成熟,尤其是图像识别、语音识别等技术在各行各业的应用逐渐取得成效。移动警务终端是公安交通民警持有的基础设备,在路面巡逻、执法过程中被广泛应用。以移动警务终端为载体,公安交通集成指挥平台将部分业务拓展到了移动端。公安交通集成指挥平台主要业务有缉查布控、视频巡查、非现场执法等,依托移动警务终端的视频、语音模块,结合人工智能技术在业务中实现人脸识别、语音输入、语音指令等功能应用。     

基于Arena的武钢工业港原料码头物流系统仿真研究

分析了武钢工业港原料码头物流系统的现状及存在的问题,利用Arena仿真软件对武钢工业港原料码头物流系统进行了仿真建模,并在建模过程中应用了相关的优化策略,对模型进行了验证和确认分析,提出了进一步的优化方案。     

不同集装箱码头装卸系统下最优堆垛高度分析方法

介绍了一种简单的方法,用来估计在不同技术系统,不同土地面积以及经营成本下的集装箱码头作业效率。论述了此种理论以后,并通过实例的计算分析加以验证。