浅谈站后机电专业设计的安全管理

针对7.23事故后站后机电专业安全质量大检查发现的普遍问题,提出了设计日常安全管理的重点和思路。     

Decision Support Systems for Public Transport Management: The Athens Public Transport Authority Project

This article reports on an implementation study of a computerised decision support system for public transport management for the Athens Public Transport Authority (APTA). The study analysed the current situation, specified user requirements, determined system functionality, designed the system architecture, organised the project and, finally, planned dissemination activities. The decision support system covers the main public transport management activities of APTA - transport service provision, economic and financial planning, passenger complaints and suggestions, and personnel management - offering its users the possibility to study the potential effects of their decisions before implementation. To achieve this, the system will consist of a data warehousing system, for the integrated management of a wide variety of data sources, and of online analytical processing tools, for information analysis and scenario testing. The system architecture has been designed to offer robustness, flexibility, rich functionality and open connectivity. The system aims to help APTA reduce operational costs and provide a better transport service, attracting more passengers to public transport and reducing, in the process, congestion and pollution.     

Speed variation during peak and off-peak hours on urban arterials in Shanghai

Increased speed variation on urban arterials is associated with reductions in both operational performance and safety. Traffic flow, mean speed, traffic control parameters and geometric design features are known to affect speed variation. An exploratory study of the relationships among these variables could provide a foundation for improving the operational and safety performance of urban arterials, however, such a study has been hampered by problems in measuring speeds. The measurement of speed has traditionally been accomplished using spot speed collection methods such as radar, laser and loop detectors. These methods can cover only limited locations, and consequently are not able to capture speed distributions along an entire network, or even throughout any single road segment. In Shanghai, it is possible to acquire the speed distribution of any roadway segment, over any period of interest, by capturing data from Shanghai’s 50,000+ taxis equipped with Global Positional Systems (GPS). These data, hereafter called Floating Car Data, were used to calculate mean speed and speed variation on 234 road segments from eight urban arterials in downtown Shanghai. Hierarchical models with random variables were developed to account for spatial correlations among segments within each arterial and heterogeneities among arterials. Considering that traffic demand changes throughout the day, AM peak, Noon off-peak, and PM peak hours were studied separately. Results showed that increases in number of lanes and number of access points, the presence of bus stops and increases in mean speed were all associated with increased speed variation, and that increases in traffic volume and traffic signal green times were associated with reduced speed variation. These findings can be used by engineers to minimize speed differences during the road network planning stage and continuing through the traffic management phase.     

高速铁路施工安全质量管理实践

介绍全面质量管理理论和8项管理原则,结合高速铁路施工情况,提出高速铁路安全质量管理原则、＂分级管理＂模式和＂四方控制＂机制,总结高速铁路施工安全质量管理实践经验,认为其核心是充分发挥高层领导、工程建设指挥部、监理单位、施工单位等各自特点的管理方式,介绍安全质量管理应用的具体案例。     

6S现场管理在货车检修生产中的应用

6S现场管理是针对企业生产现场管理的有效方法,符合铁路倡导人本管理的精神。结合铁路货车检修生产实际,指出应用6S现场管理方法的主要内容和关键要点。     

车辆阻力对站线坡度设计的影响研究

根据车辆所受基本阻力、曲线阻力、坡道阻力、风阻力、道岔阻力,建立车辆单位基本阻力模型及数学表达式,运用车辆参数及风阻力参数,对车辆相关状态进行分析计算,研究表明:线路纵坡即使为平坡,亦存在溜逸安全隐患,必须采取措施才能保证安全;对《站规》站线纵坡标准,进行安全评估,提出利用停车顶改善车辆停放状态的措施意见及计算办法;利用减速顶做功耗能可以提高装车线线路纵坡,从而满足定量快速装车或轨道衡计量系统的技术要求,为线路纵坡设计提供依据,拓宽站场调速设备应用领域,创新工程设计方法,为工程综合优化设计提供理论基础,供设计分析及计算参考。     

国际货运代理业应当尽快实施收益管理

收益管理作为一项先进的管理技术,在国际货运代理业尚未得到充分应用。现以国际货运代理业中最重要的业务之一——国际集装箱运输代理业务为例,探讨国际货运代理业可否实行收益管理,并从可行性、必要性和紧迫性等三个方面,进行较为详细的分析和论述,得出国际货运代理业开展收益管理不仅是可行的,而且是十分必要的,同时也是急待实施的结论,从而为国际货运代理业实施收益管理提供理论支持。     

高速铁路常用供电方式接地回流研究

分析了在高速铁路常用的供电方式下，即带回流线的直接供电方式和AT供电方式下的接地回流情况，通过对2种供电方式下牵引网的等效电路建模、计算，得到钢轨电流和地中电流分布系数的近似计算公式，并对回流情况进行了分析。     

浅谈建筑施工现场管理

建筑施工现场是人流、物流、信息流的集散地,同时也是企业产品的形成地。笔者结合多年的工作经验,就如何加强建筑施工现场管理,谈些粗浅之见属抛砖引玉,以其为企业同行提供参考。     

便携式长江航运综合信息系统

针对长江航运中出现的新问题,为提高航运安全性和管理的智能化水平,提出了一种基于PDA设计的航运综合信息系统解决方案。该系统由3个层次(航管中心、航船助理、船况代理)组成,综合利用了嵌入式、数据库、现场总线、GPS、GIS、GPRS、多媒体、传感器等多种技术,能实现对长江在航船只的导航、监控、管理、通信等功能。系统的硬件结构和软件功能界面经测试表明该系统使用非常方便,具有很多优点,为实现长江航运的智能化提供了一种很好的思路。