查询词典 traffic accident

This paper presents a virtual electronic technology development, traffic signal design, Traffic lights and the design method; Comprehensive analysis and comparison of the advantages and disadvantages of the design method, The topic of virtual electronic technology used to achieve the main streets and secondary streets crossroads of the traffic signal controller design electronic workbench to the traffic signal control circuit simulation.

本文首先简要介绍虚拟电子技术的发展、交通信号灯设计的作用、以及交通信号灯的各种设计方法；综合分析比较各种设计方法的优缺点，本课题采用虚拟电子技术实现主要街道和次要街道十字路口的交通灯控制器的设计，采用电子工作台EWB对交通信号灯控制电路进行仿真。

The main works are as follows: 1 The developingt history of the traffic load on bridges is represented. Typical bridge codes in some countries are discussed and these traffic load models are comparative analyzed. Analysis shows that the influence of layout axle for the total traffic load effect on bridge gradually becomes smaller with the increase of bridge span. So most national norms use the distributed load as the equipollent load of traffic load.

主要内容包括下面几个方面： 1阐述了桥梁汽车荷载发展的简史，讨论了部分国家典型的桥梁汽车荷载设计规范，并对这些荷载模型进行了对比分析，分析表明随着桥跨的增大，车轴布置对桥梁整体荷载效应的影响逐渐变小，因而大部分国家的规范都把均布荷载作为车辆的等代荷载。

From two incoming roads seperatively, the traffic on the left will interpenetrate the traffic flow in both of the loops, while the traffic on the right only need interpentrate the outer-loop traffic flow.

el 两条进口车道车辆进入交叉口时，左侧两条进口车道车辆进入交叉口时，左侧车流需与两条环行车流穿插，而右侧车流只需与外侧环行车流穿插。

In limit the foundation that comments a system to go up, the article is built from course theory, isogon of effect of traffic of integrated traffic and division into districts, branch, city traffic, space spends area, reviewed our country traffic to carry geographical development history and research process and newest progress, comb this course from 20 centuries the development since 20 time is mixed the macroscopical sequence of thought of research, undertake be summed up simply and be commentinged to its.

在界定评述体系的基础上，本文从学科理论构筑、区域综合交通与区划、部门交通、城市交通、空间效应等角度，回顾了我国交通运输地理学的发展历史和研究过程以及最新进展，梳理出该学科自20世纪20年代以来的发展和研究的宏观脉络，并对其进行简单总结和评述。

It would be the powerful theory base and evidence for alleviating congestion. In this dissertation, characteristics and effected factors of urban traffic congestion were generally analyzed and evaluation measures of congested traffic and normal traffic were reviewed. An index-system of congestion measures adapting to urban traffic was set up in which road characteristic, decision-making, perceptivity of citizen travel and economic-society adaptability were considered. A method of"classify status first, evaluate trend later"was found out according to analysis of all existing comprehensive evaluation methods.

论文在全面分析城市道路交通拥堵特性及主要影响因素的基础上，对拥堵评价指标和传统城市交通评价指标进行了回顾，综合考虑道路特征、政府决策、城市居民出行感受和社会经济适应性，建立了适合城市道路交通特点的拥堵评价指标体系；并在分析现有综合评价方法的基础上，提出了"先状态分类后趋势分析"的拥堵评价方法。

First, the traffic flow time series chaotic feature is extracted by chaos theory. pretreatment for traffic flow time series, and the wavelet neural networks model was build by this. Second, the chaotic mechanism and the chaotic probability is described. Based on chaotic learning algorithm, and the wavelet neural networks fast learning algorithm of traffic flow time series is designed based on chaotic algorithm. Last, a single-step and multi-step prediction of traffic flow chaotic time series is researched by BP neural networks, wavelet neural networks and wavelet neural networks based on chaotic algorithm. The results showed that the wavelet neural networks predictive performance is better than the BP networks and the wavelet neural networks by the simulation results and root-mean-square value.

首先，通过混沌理论提取了交通流量时间序列的混沌特征，并在此基础上建立了小波神经网络交通流量时间序列模型；接着，阐述了混沌学习算法的混沌机理、混沌产生的概率，设计了基于混沌算法的小波神经网络交通流量混沌时间序列快速学习算法；最后利用交通流量混沌时间序列对BP网络、非混沌算法的小波神经网络以及基于混沌算法的小波神经网络进行了单步预测和多步预测，并对预测结果的仿真图和真实值与预测值的方均根进行了比较，结果表明基于混沌学习算法的小波神经网络的预测性能明显优于应用BP网络和非混沌算法的小波神经网络。

Xingyi City is located at the junction of Guizhou, Yunnan and Guangxi provinces and autonomous region, connecting Yunnan in the west, Guangxi in the south, over 300km away from Guiyang and Kunming and 500km away from Nanning. It is one key city of the Nanning, Guiyang and Kunming Economic Area, the commodity distributing center and the traffic hub. After several years of construction, the modern three-dimensional traffic net with aviation, railway, road and water carriage has been formed in Xingyi City. The convenient traffic makes Xingyi become the key traffic hub southwestward to the sea.

兴义市地处黔、滇、桂三省结合部，西通云南，南接广西，距贵阳、昆明300多公里，距南宁500公里，是南贵昆经济区重要的区域性中心城市、物资集散地和交通枢纽中心，兴义市经过多年的建设，现已初步形成了航空、铁路、公路、水运"四位一体"的现代立体交通网络，便利的交通条件使兴义一跃成为西南出海大通道的重要交通枢纽和前沿地区，交通优势突显。

An embodiment of the invention discloses a reverse power control method of an orthogonal frequency-division multiple access system including: calculating decision threshold values of each adjacent subdistrict according to the current reverse traffic channel gain of an access terminal, channel differences between each adjacent subdistrict and the resources distributed by the access terminal; and adjusting the reverse traffic channel gain value of the access terminal according to the decision threshold values of each adjacent subdistrict and using the adjusted reverse traffic channel gain values to determine the transmit power of the reverse traffic channel.

本发明实施例公开了一种正交频分复用多址系统中的反向功率控制方法，包括：根据接入终端的当前反向业务信道增益、各个相邻小区的信道差异以及接入终端所分配的资源情况计算各个相邻小区的判决门限值；根据所述各个相邻小区的判决门限值调整接入终端的反向业务信道增益值，并且利用所调整的反向业务信道增益值决定反向业务信道发射功率。

For acquiring the railway passenger's OD matrix accord with factual traffic flow, we utilize the method of traffic flow suit to railway fieldwork. Being directed against the errors of theory traffic flow and factual traffic flow and make use of error co...

为求出与实际的交通量相匹配的铁路旅客OD流量，利用和铁路运输现场实际工作相吻合的交通配流方法，针对理论分配交通量和实际交通量的偏差程度、采用适时修正的方法进行迭代运算，直至得到一个满意的解为止。

Have analysed modern city traffic controlling and managing the problem current situation, important problem operating principle , the automation realizing traffic light having set forth traffic light navar with a view of unobstructed reality of city and countryside are commanded to be that urban traffic control automates.

分析了现代城市交通控制与管理问题的现状，结合城乡交通的实际情况阐述了交通灯控制系统的工作原理，实现红绿灯的自动指挥是城市交通管理自动化的重要课题。

Green function defined inphase space differs from one in coordinate space by its struc-ture which exhibits nonlocatity in coordinates and oscillatorybehavior with respect to momenta.

在相空间中定义的Green函数不同于通常坐标空间的Green函数，在结构上显示出对坐标的高度非局域性，而对动量则显示出振荡行为。

The upper front part of a saddle;a saddlebow.

前鞍桥马鞍前面的上部分；前鞍桥