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找到报告 5731 篇 当前为第 524 页 共 574

报告分类:外文技术报告

  • 5231.实现智能交通系统基础以改善机场旅客访问信息的指南。机场合作研究项目(ACRP)报告。

    [信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业,铁路、船舶、航空航天和其他运输设备制造业] [2013-11-25]

    Guidebook for Implementing Intelligent Transportation Systems Elements to Improve Airport Traveler Access Information provides descriptions, component details, and examples of how airport ground access information can be disseminated using various intelligent transportation systems (ITS) technologies. The guidebook contains tables to help airport operators determine the applicability of certain ITS strategies based on airport operational needs and airport size. The printed version of the report includes an interactive CD-ROM designed to help explore and evaluate the information needs of various airport traveler market segments and to identify ITS technologies that best meet the needs of the airport use.
    关键词:电子信息;智能交通;机场;合作研究
  • 5232.人类和社会对于智能交通系统的建设动态假设需求的系统动力学建模

    [计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业,交通运输、仓储和邮政业] [2013-11-25]

    The current article structures the knowledge and requirements for the (system dynamics) modeling of distributed actions in the intelligent transportation systems from the perspective of the sociology of technology
    关键词:电子信息;智能交通;系统动力学;建模
  • 5233.铁路平交路口安全智能控制系统

    [计算机、通信和其他电子设备制造业,铁路、船舶、航空航天和其他运输设备制造业] [2013-11-25]

    Accident protection system at railway level crossing usually informs vehicle drivers and pedestrian that train is approaching, and eventually prevents them from passing the level crossing. This paper proposes a new level crossing safety system to solve the problem of existing system and to deal with the changing traffic condition at level crossing. The objective of the proposed system is to detect stopped vehicles at a level crossing with the state-of-the-art intelligent technology (sensor, computer, data processing, communication) and to transmit information to train allowing train drivers to stop their trains automatically and to display information of approaching train to vehicle drivers in real-time and to develop technology for accident prevention and damage reduction in connection with road traffic signal system. To evaluate the function and operation, we have demonstrated the proposed system at real railway level crossing of Young-dong line of Korail with Sea Train.
    关键词:电子信息;智能交通;铁路控制;平交路口
  • 5234.智能交通系统:改进美国运输部的合作和沟通可以提高交通拥堵管理技术的使用

    [信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业,交通运输、仓储和邮政业] [2013-11-25]

    Traffic congestion burdens the nation's quality of life and will likely grow substantially if current trends continue. Intelligent Transportation Systems (ITS) are a range of technologies that can reduce congestion at less cost than some other approaches. The U.S. Department of Transportations (DOT) Research and Innovative Technology Administration (RITA) is responsible for promoting and supporting the use of ITS in coordination with other modal administrations, including the Federal Highway Administration (FHWA). Since 1994, DOT has overseen the allocation and expenditure of more than $3 billion for deploying and researching ITS. GAO was asked to address (1) the current and emerging uses of ITS technologies by state and local governments, (2) the challenges these governments face in using ITS, and (3) the extent to which DOT's efforts to promote and support ITS address these challenges and follow leading practices. To conduct this work GAO visited four sites, and interviewed and analyzed documents and data from DOT and state and local transportation officials, ITS experts, and other stakeholders.
    关键词:电子信息;智能交通;交通拥堵;美国运输部
  • 5235.智能交通系统(ITS)技术的宽边界评估最终报告:当前和未来的一些概念

    [信息传输、软件和信息技术服务业,计算机、通信和其他电子设备制造业,交通运输、仓储和邮政业] [2013-11-25]

    The purpose of this effort was to conduct a border-wide assessment of the use of intelligent transportation systems (ITS) technologies and operational concepts at and near land border crossings between the U.S. and Mexico. The work focused on tolling, traffic management and operations, and safety. The specific objectives of this project were to research, assess and document how ITS technologies can be used in areas of: Toll collection and management in border regions, identifying technology used, system components, and any special data sharing arrangements between the two countries. Transportation operations and traffic management in US/MX border regions. Transportation safety policy and operations. Traffic management, traffic operation and traffic enforcement on tolled roads/tolled border-crossing roads. Archiving toll and traffic management data.
    关键词:电子信息;智能交通;宽边界;评估
  • 5236.纳米金刚石成像:一个新的分子成像方法

    [信息传输、软件和信息技术服务业] [2013-11-24]

    In this thesis,we briefly review existing imaging modalities.We show how nanodiamond imaging has the potential to image with both high sensitivity AND high spatial resolution over organism-scale fields of view,features which are mutually exclusive in existing modalities(except at the shallowest imaging depths).Nanodiamond imaging's combination of high sensitivity and high resolution is potentially one of its greatest advantages.
    关键词:映像形态;纳米金刚石成像;分子成像
  • 5237.避免密集的线性代数中的通信

    [信息传输、软件和信息技术服务业] [2013-11-24]

    In this thesis, we develop both new communication lower bounds and new algorithms, tightening (and in many cases closing) the gap between best known lower bound and best known algorithm (or upper bound). We consider both sequential and parallel algorithms, and we asses both classical and fast algorithms (e.g., Strassen's matrix multiplication algorithm).
    关键词:通信下界;并行算法;矩阵乘法算法
  • 5238.加州大学伯克利分校精密加工实验室的历史

    [计算机、通信和其他电子设备制造业] [2013-11-24]

    The UC Berkeley Microfabrication Laboratory (Microlab) in Cory Hall had its opening dedication ceremony on 23 March 1983. It was officially closed on 31 December 2010. This report is the documentation, in wide swathes, of 28 years of operation, including management of resources: facilities, staff, finances, and related activities of control, communications and planning.
    关键词:加州大学伯克利分校;精密加工实验室;通信;计划;技术报告
  • 5239.估计自然法则和数据驱动模型的综合方法:以排列网络为例

    [信息传输、软件和信息技术服务业] [2013-11-24]

    Mathematical models are a mathematical abstraction of the physical reality which is of great importance to understand the behavior of a system, make estimations and predictions and so on. They range from models based on physical laws to models learned empirically, as measurements are collected, and referred to as data-driven models. A model is based on a series of choices which in uence its complexity and realism. These choices represent tradeo s between di erent competing objectives including interpretability, scalability, accuracy, adequation to the available data, robustness or computational complexity. The thesis investigates the advantages and disadvantages of models based on physical laws versus data-driven models through the example of signalized queuing networks such as urban transportation networks.
    关键词:数学模型;估计;市区运输网络
  • 5240.反射脉冲无线电:原则和设计

    [计算机、通信和其他电子设备制造业,信息传输、软件和信息技术服务业] [2013-11-24]

    This dissertation begins by examining future wireless sensor applications and presenting the link asymmetry. The alternative architecture is then introduced and its operation principles explained. A step-by-step design procedure follows, accompanied by the implementation of a miniature biomedical implant transmitter as a design example. Potential challenges and mitigation techniques are also discussed. Key advantages of the proposed architecture include ultra low power consumption, simple circuitry (hence high reliability and low cost), and broad range of scalability. Measurement results of the biomedical example are subsequently presented, before a short conclusion is given in the end.
    关键词:无线传感器应用;不对称性;可伸缩性;生物医学;医疗器械
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