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本文阐述了信息高速公路的基本概念、关键技术及其作用,综述了世界各国在发展高速公路路方面的新动态,阐述了我国发展高速公路应采取的措施。 相似文献
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随着我国经济建设的快速发展,高速公路以及电力行业都在不断的建设发展中。在输电线路的架设施工中,经常会遇到需要跨越高速公路的情况,给输电线路的架设带来很多难点问题。本文主要根据工程实例阐述了输电线路建设跨越高速公路的施工技术。 相似文献
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我国高速公路的建设里程正在逐年趋增长。高速公路功能的完善有利益我国经济的发展。高速公路机电项目管理和应用有效的提升了高速公路的管理和效率。为了保障机电项目管理的正常运行,要加强对其系统管理与维护中存在问题的重视,要根据具体的问题采取相应的措施。本文主要阐述了机电项目管理管理与维护中存在的问题,对于具体的问题提出了一定的应对措施。 相似文献
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伴随着我国高速公路的快速发展,高速公路管理日益被人们所重视,寻求和发展相适应的管理方法也成为高速公路管理部门关注的重点。同时,信息科技的蓬勃发展为各行各业提供了解决问题的新思路,作为信息科技分支的交通电子政务解决了高速公路管理的诸多难题,正在被广泛的应用于全国的高速公路系统。本文就现在交通电子政务建设中存在的问题,结合高速公路和电子政务的特点,阐述了在高速公路管理中建立交通电子政务应该注意的问题和今后的发展方向。 相似文献
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高速公路的发展,在带给人们生活带来便利的同时,也出现了一些问题。其中交通拥堵是一个普遍存在,而且亟待解决的问题。文中通过分析交通安全管理因素,对高速公路交通控制和诱导方法进行了阐述,并介绍了智能化高速公路交通控制方案。 相似文献
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简要地回顾了电信网发展的历史,分析了其发展趋势。电信网发展到今天,信息高速公路和智能信息处理成为当今科技界的研究热点。全球性建设信息高速公路的热潮正在兴起。 相似文献
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分布式多媒体技术的研究及其展望 总被引:4,自引:0,他引:4
伴随着“信息高速公路”的兴起,分布式多媒体这一综合的跨学科的研究领域越来越受到人们的重视。如何认识分布式多媒体技术,以及如何把握其未来的发展方向对于从事这一领域工作的科研开发人员是十分必要的,本文从计算机学科的角度出发,对分布式多媒体技术的产生、分布式多媒体的通信平台、分布式多媒体通信协议、分布式多媒体数据库及其应用等方面做了概要的阐述,并对每一部分的发展做了展望。 相似文献
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CSCW:计算机支持的协同工作 总被引:95,自引:6,他引:89
近10年来,CSCW(Computer Supported Cooperative Work,计算机支持的协同工作)作为新兴的研究领域越来越受到广泛的重视。这是一个跨学科的新研究领域,不仅仅受到计算机学科的支持,还涉及到社会学,心理学,组织理论和人类学等学科,当然计算机科学与通信技术的新成就所给予的支持是根本。本文试图从计算机学科角度出发,对CSCW的基本概念,技术支持,应用领域等方面作一清晰阐述 相似文献
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Information infrastructure development: International comparison between the United States and Japan
《Telematics and Informatics》1994,11(3):153-166
The Clinton-Gore Administration won the presidential election by propagating “change” and “competitiveness”. The new administration is now paying serious attention to the development of the National Information Infrastructure (NII), often referred to as the “Information Highway”, which is a key component of its technology policy for regaining American manufacturing competitiveness. This article first compares the history of the NII with that of the Japanese Information Infrastructure (JII). Then, this study describes the political, economic and technical issues related to the implementation of NII and JII that need to be overcome by the United States and Japan, respectively. This study incorporates a Japanese perspective in the development of the Information Highway in the framework of a government/business relationship. This international comparison among four players (American business, American government, Japanese business, and Japanese government) serves as a conceptual basis for understanding the Information Highway plans of the two major industrial nations. 相似文献
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本文讨论了超级智能视听信息系统(SIVAIPS)所需的网络环境,给出了系统的网络结构,详细论述了基于Etherent扩展的SIVAIPS网络环境的设计思想与实现方法,并在包括语音,图形,图像,文本信息处理工作站及多媒质数据库管理工作站的互连系统中实现了SIVAIPS网络环境。 相似文献
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The telecommunications planners for the North Carolina State Government recognising the potential of asynchronous transfer mode and synchronous optical network, asked BellSouth, Carolina Telephone, and GTE to develop a proposal for a network based on ATM and SONET to enable a multitude of high-speed data and video applications throughout the state. This B-ISDN, now known as the North Carolina Information Highway (NCIH), has become widely recognized as a model for the National Information Infrastructure (NII). The services provided by the NCIH are designed to be able to support numerous emerging applications that are expected to provide significant benefits in the areas of education, health care, crime control, economic development, and government 相似文献
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《Vehicular Technology, IEEE Transactions on》1970,19(1):17-23
The Highway Research Board (HRB) was established in 1920 as a unit of the Division of Engineering, National Research Council, under the corporate authority of the National Academy of Sciences. Its purpose then, as now, was fourfold: 1) to stimulate highway research 2) to correlate highway research 3) to make known the findings of highway research 4) to undertake, when appropriate, special highway research projects. The interest of the HRB in electronics goes back many years. Many of its committees have been concerned with the use of computers, photogrammetry, instrumentation, traffic surveillance and control, and similar uses. Test instrumentation and data reduction techniques, developed at the HRB's large field tests of highway pavements in the 1950s, were highly sophisticated at the time. The services of the HRB include the Highway Research Information Service (HRIS), which became operational in 1967 and represents one of the most complete compilations of information on highway-related research available in the United States. The scope of the information stored in the system is as broad as the problems of planning, building, maintaining, and operating transportation systems. Subjects range from parking regulation to soil stabilization, from aggregates to aesthetics, from hydrology to psychology, anything having to do with highway travel or its interaction with other modes of transportation. The science of information transfer is progressing very rapidly. The HRB will keep abreast of new developments in technology; therefore, HRIS, the Maritime Research Information Service (MRIS), and the Transportation Research Information Service (TRIS) necessarily will be under a continuing state of review and will be modified from time to time to keep up with new developments as soon as they are proven effective. 相似文献
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随着通信的发展和“信息高速公路”概念的提出,网络运营商越来越倾向集视频、话音、数据于一体的宽带综合业务,如今世界各国相继开发了基于现有铜缆的接入网技术高比特率数字用户环路(HDSL)和不对称数字用户环路(ADSL)、基于光缆接入技术的光接入网(OAN)、混合光纤同轴电缆(HFC)网络以及无线接入技术等宽带用户接入网技术,文章详细分析了HFC宽带接入网的网络结构及其关键技术。 相似文献