高校图书馆建设信息共享空间的模式初探

在综合国内外近年来公开发表的相关文献基础上,文章介绍了信息共享空间的概念、工作模型、人员结构、设施及国外高校图书馆信息共享空间的现状,为国内高校图书馆的建设提供了一条途径。     

自动识别系统（AIS）性能综合评价

自动识别系统（AIS）将为船舶交通服务提供新的船舶动态监测与识别手段。文章以通信协议为脉络,全面地比较评估了最具代表性的两种AIS系统在信道利用率、差错控制性能、吞吐率以及监测容量等方面的优劣,进而提出改进AIS技术的思路。     

多业务IP城域网的技术选择与实现

目前国内运营商均已完成了电信级IP承载网络的建设,IP城域网作为多业务承载的启始与终结点成为运营商的关注重点。以海南铁通城域网优化建设为例,详细阐述城域网路由化、网络扁平化、质量差异化、业务多样化的技术选择与实现。     

浅谈高速公路沿线服务区设计

对高速公路沿线服务区的设计进行了阐述。     

以产品开发为中心的企业组织变革

通过对企业的产品开发和组织变革关系的研究,分析了国内企业组织变革的重点应该是围绕着产品开发的主线来进行,这样企业的变革才能客观地反映市场的变化和顾客的需求,变革才能顺利进行,企业才能生存和发展。     

铁路货运业务服务流程优化研究

铁路货运票据电子化的实施,畅通了铁路货运信息系统间数据交互,极大地提高了铁路货运服务效率与质量,在电子运单下如何开展铁路货运业务成为面临的重要问题。立足于既有铁路货运业务服务流程现状,分析研究货运业务服务流程中存在的客户办理手续复杂、作业人员结构欠佳和业务操作环节冗杂等问题。在优化原则的基础上,重点对既有受理发送业务服务流程和交付业务服务流程进行优化设计,以实现货运业务服务流程的优化效果,为铁路货运信息化和智能化发展提供决策依据。     

Shared autonomous electric vehicle service performance: Assessing the impact of charging infrastructure

Shared autonomous vehicles (SAVs) are the next major evolution in urban mobility. This technology has attracted much interest of car manufacturers aiming at playing a role as transportation network companies (TNCs) and carsharing agencies in order to gain benefits per kilometer and per ride. It is predicted that the majority of future SAVs would most probably be electric. It is therefore important to understand how limited vehicle range and the configuration of charging infrastructure will affect the performance of shared autonomous electric vehicle (SAEV) services. In this study, we aim to explore the impacts of charging station placement, charging types (including normal and rapid charging, and battery swapping), and vehicle battery capacities on service efficiency. We perform an agent-based simulation of SAEVs across the Rouen Normandie metropolitan area in France. The simulation process features impact assessment by considering dynamic demand responsive to the network and traffic.Research results suggest that the performance of SAEVs is strongly correlated with the charging infrastructure. Importantly, faster charging infrastructure and placement of charging locations according to minimized distances between demand hubs and charging stations result in a higher performance. Further analysis indicates the importance of dispersing charging stations across the service area and its impacts on service effectiveness. The results also underline that SAEV battery capacity has to be selected carefully such that to avoid the overlaps between demand and charging peak times. Finally, the simulation results show that the performance indicators of SAEV service are significantly improved by providing battery swapping infrastructure.     

计算机联锁系统服役状态趋势分析

选取双机热备计算机联锁系统和二乘二取二计算机联锁系统作为研究对象,分别分析了各自的服役状态趋势,研究了影响计算机联锁服役状态趋势的因素,并提出相应的建议。计算机联锁服役状态趋势的研究,有利于对设备元器件做出相应的维修决策,保证铁路电务设备可靠运行。     

浅谈延长汽车用蓄电池的使用寿命

介绍了汽车蓄电池主要用途、基本结构和工作特性,通过对蓄电池使用维护中遇到的实际问题的分析,介绍了延长蓄电池使用寿命的一些措施。     

基于SaaS模式的中小型航运企业物流信息平台关键技术

分析中小型航运企业信息化现状,介绍SaaS(即软件及服务)技术,说明了其高实时性、高适用性以及低成本性等特点,进而提出“基于SaaS模式的物流信息平台”解决方案.在物流平台中应用SaaS技术,能够实现为中小型企业提供物流应用服务的安全性、适用性和按需提供服务的匹配性,通过同构实例的应用搭建了物流信息公共平台,实现中小型航运企业的高效信息化管理.