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traffic volume     
相关语句
  交通量
     Method for the traffic volume detection based on Bayes parameter estimation and weighted data fusion algorithm
     基于Bayes估计和加权数据融合算法的交通量检测方法
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     Probe into the Necessary of Traffic Volume 24 Hours OD Survey
     交通量24小时OD调查必要性的探讨
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     Fast Second Order BP Neural Networks and Its Application for Forecast Of Road Traffic Volume
     快速二阶BP神经网络在公路交通量预测中的应用
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     This paper proposes a forecasting method for traffic volume of bus line by applying the BP neural network, describes the structure of the BP neural network and its algorithm, analyses the forecasting method using the BP neural network.
     本文描述了将BP网络应用于预测公交线路的交通量的方法,给出BP网络的结构和它的学习算法,分析了预测交通量的BP神经网络方法。
     Forecasting the Downstream Intersection Traffic Volume by BP Neural Network
     用BP神经网络预测下游交叉口进口交通量
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  交通流量
     Results The concentrations of SO2, NO2, CO, TSP showed the correlative degrees of 0.576 4, 0.689 4, 0.681 7, 0.700 2 associated with the whole traffic volume in the streets, 0.608 5, 0.729 0, 0.715 6, 0.714 4 associated with volume of motorcycle, and 0.522 0, 0.624 7, 0.605 1, 0.652 6 associated with other motor-vehicles respectively.
     结果交通流量与SO2、NO2、CO、TSP的关联度分别为0.5764、0.6894、0.6817、0.7002,其中上述4种污染物与摩托车流量的关联度分别为0.6085、0.7290、0.7156和0.7144,与其他机动车流量的关联度分别为0.5220、0.6247、0.6051、0.6526。
短句来源
     Application of BP Neural Network in Prediction of Traffic Volume
     BP神经网络在交通流量预测中的应用
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     A real time traffic volume prediction model based on the kalman filtering theory
     基于卡尔曼滤波理论的交通流量实时预测模型
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     A study of predictive method of intersection traffic volume based on neural network
     基于神经网络的交叉口交通流量预测方法研究
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     Real-Time Traffic Volume Prediction Based on Fuzzy Neural Network
     基于神经网络的实时交通流量模糊预测
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  运量
     The Application of Topological Selection of Grey Prediction in Traffic Volume Prediction
     灰色预测的拓扑选择在运量预测中的运用
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     The main contents and conclusions are as follows:1. development aims: By the year 2010, Chinese railway container traffic volume will reach 10 million TEU.
     本文研究的主要内容和结论如下:1、发展目标:2010年,铁路集装箱运量要达1000万TEU。
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     Based on the modeling principle and calculation method of partial least-squares regression(PLS),the essay analyzes the factors influencing railway parcel traffic volume.
     在阐述基于偏最小二乘回归法(PLS)的建模原理与求解方法的基础上,通过对铁路行包运量影响因素的分析,利用2004年有关生产统计数据及影响因素的统计数据,建立了铁路行包运量预测PLS回归模型。
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     Forecasting the Container Traffic Volume on Pudong Railway
     上海浦东铁路集装箱运量预测
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     Taking the prediction of port's throughput and tunnover volume of freight traffic as examples, the results indicated that the precision of the metabolism GM(1. 1)model was highest among three models (information GM(1.1) model, metabolism GM(1.1) model and primary full data GM(1.1) model). This model is recommended to be adopted in the prediction of traffic volume.
     结果表明,新息GM(1,1)模型,新陈代谢GM(1,1)模型与原始模型(全数据GM(1,1)模型)三者比较,新陈代谢GM(1,1)模型的精度最高,值得推荐在运量预测中采用。
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  运输量
     Forecasting Development Trend of Railway Passenger Traffic Volume by Grey Model
     用灰色模型预测铁路旅客运输量发展趋势
短句来源
     Study of the Forecasting Method for Railway Freight Traffic Volume Based on the System of National Economy
     基于国民经济大系统下的铁路货物运输量预测方法的研究
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     The network characteristics of infrastructure decide the direct effect of network connectivity and traffic volume on the benefit and return of transport operation.
     基础设施的网络特征决定了网络的连通性和网络上的运输量对运输经营的收益和回报有直接影响。
短句来源
     The larger the traffic volume on the specific circuit is, the higher the density of passenger traffic, freight transportation, the lower the average transportation cost is.
     特定线路上的运输量越大,客运密度、货运密度越高,平均运输成本就越低。
短句来源
     There are some difficulties in converting transport volume into traffic volume,In this paper a traffic volume regressive model is introduced,As an example,its application to the calculation of traffic volume in a city is described. Thus,a simple and practical method of calculating traffic volume is presented.
     探讨了公路运输量与交通量换算中存在的问题,提出了交通量回归模型,并将该模型应用于某市公路的交通量计算,进而得到一种简易而实用的交通量计算方法。
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  traffic volume
In a multi-class priority network, results show that using the objective function to combine route and priority class assignment further increases the supportable network traffic volume.
      
Video traffic is expected to account for a significant share of the traffic volume in the future asynchronous transfer mode (ATM) networks.
      
pubescens), the evergreen species, by its continuous photosynthetic activity, contributes to reduce CO2 throughout the year, and in particular during the winter months, when traffic volume has a pick, than Q.
      
Our protocol also greatly reduces control traffic volume of existing algorithms during clustering maintenance phase, while not risking the energy availability of CHs.
      
Adaptive random sampling for traffic volume measurement
      
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The marshalling yard at West Feng Tai, Beijing, is the busiest one on our railways, where the classification of cars is heavy and traffic volume is large. Being operated more efficiently, it is necessary by introducing an automatic humping speed control system at the hump yard. This paper describes the use of target point brake and with decentralized control system. With the aid of statistic mathematical analysis, the car running resistance on the marshalling tracks before and after the retarders, are...

The marshalling yard at West Feng Tai, Beijing, is the busiest one on our railways, where the classification of cars is heavy and traffic volume is large. Being operated more efficiently, it is necessary by introducing an automatic humping speed control system at the hump yard. This paper describes the use of target point brake and with decentralized control system. With the aid of statistic mathematical analysis, the car running resistance on the marshalling tracks before and after the retarders, are predicated. Through the operation in recent years the efficiency is very much manifested.

丰西驼峰编组站是我国最大的编组站之一。作业繁忙,车流大,对丰西驼峰实现自动化是十分必要的。本文介绍了已在丰西试用的驼峰溜放速度自动控制系统。 系统属“打靶式”调速方式,采用分散控制的系统结构,用数理统计的数学方法予计车辆在减速器前后线路上的阻力。文中均作了论述。 最后介绍了初步运营效果。

In this paper, various vehicles in urban streets are classified into 4 classes according to their noise levels. When traffic volume is small, traffic flows consisting ,of these vehicles are regarded as a composite Poisson stream. The relationship between traffic volumes of various classes and kerbside statistical noise levels is analysed quantitatively and formulated. In consideration of traffic volumes of different kinds of vehicles, three tables for predicting kerbside levels of L10,...

In this paper, various vehicles in urban streets are classified into 4 classes according to their noise levels. When traffic volume is small, traffic flows consisting ,of these vehicles are regarded as a composite Poisson stream. The relationship between traffic volumes of various classes and kerbside statistical noise levels is analysed quantitatively and formulated. In consideration of traffic volumes of different kinds of vehicles, three tables for predicting kerbside levels of L10, L50 and L90 are given. Thus, a simple and practical method for predicting noise from random traffic flow consisting of multiple vehicles in urban multiple lane street is given. A series of field measurements taken at 9 sites in Beijing has shown that prediction data are consistent with measurement data.

本文将道路中通行的各种车按其发出的噪声级的高低分成四个等级,当车流量较小时,将各等级车,车流量看作复合泊松流,定量地分析出各等级车车流量与路边统计噪声级的关系,推导出相应的公式,给出根据各等级车,车流量对路边L_(10)、L_(50)、L_(90)声级的预报表。这就对多车道多车种随机车流噪声的预报提出一种简便实用的方法。经过北京市九条道路交通噪声的实测检验,证明预报值与实测值能很好地符合。

In this article, a simple computer simulation method for synthetically predicting the statistical noise levels from a random complex traffic stream on a multi-lane street is presented. The probability distribution function, promability density function and the expectation of successive headways of a computer model (M2 model) which can simulate the complex traffic stream with some vehicle bunches are derived in some details. The transformation formula producing the random numbers that obey this distribution is...

In this article, a simple computer simulation method for synthetically predicting the statistical noise levels from a random complex traffic stream on a multi-lane street is presented. The probability distribution function, promability density function and the expectation of successive headways of a computer model (M2 model) which can simulate the complex traffic stream with some vehicle bunches are derived in some details. The transformation formula producing the random numbers that obey this distribution is also derived. Then the simulation flow chart is given. A comparison between the simulation results based on M2 model and M1 model (exponential distribution model) is made. The simulation pragram is worked out according with the standard method of measurement of road traffic noise in China. The traffic volume, traffic component and the distances between observer and equivalent lane and each lanes are fed into the computer, then the statistical nodse levels, such as L10 and L50 Legwill be printed out. The calculation show that simulation data agree with practical data well.

本文给出一种一次性综合模拟多车道多车种随机车流噪声的计算机模拟的简化方法,详细推导了用于预报部分车辆成组行驶的随机车流噪声的数学模型(M_2模型)的车头时距分布函数、概率密度函数和平均时距表达式及相应的随机数变换式。文中还给出了计算机程序框图,并将M_2模型模拟结果与据车头时距为负指数分布的M_1模型的模拟结果作了比较。计算机程序是根据我国交通噪声测量统计方法编制的,只要在程序中输入车流量、车流成份,测点离各车道及等效车道的距离诸参量,计算机便能自动输出L_10、L_50、L_eq等声级值,预报值与实测值良好一致。

 
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