bluuebunny/crossref_metadata_2025 huggingface dataset:
Modeling of Hydraulic Line of Device Producing Fluctuant Load Based on Fluid Mechanics
Authors: Wang Xian Bin , Deng Hong Xing
Published: December 2012

The paper deals with modeling of vehicle breaking system hydraulic line based on fluid mechanics. Under the consideration of friction pressure loss and local pressure loss in hydraulic line, an improved hydraulic line model is proposed. The experimental bench tests were carried out based on the device producing fluctuant load to verify the accuracy of the improved hydraulic line model. The system hydraulic pressure characteristics were analyzed by simulation using AMESim software.
An Evaluation on Heavy Metal Contamination of Soils in Suzhou by Fuzzy Mathematics Model
Authors: Li Qi , Han Ya Fen
Published: December 2012

In this paper, concentrations of six heavy metals (Cr, Mn, Cu, Zn, As, Pb, Fe) in soils from different function zones of Suzhou city were determined and analysed by X-Ray fluorescence spectrometer and fuzzy mathematics model. The results show that concentrations of all except Zn were within the national second class standard, but that of all heavy metal were higher in soil background values in Anhui province; concentrations of heavy metal were different in different function areas, and heavy metal pollution was more serious in commercial area, industrial area and near the station than in residential suburb, cultural and education districts; the contaminate level of every sampling site by fuzzy mathematics model was: 7>19>6>9>14>1>17>20>4>11> 23>8>22>3>10>12>5> 16>15>2>13>18>21.
Long Term Effect to the Geological Environment by Mining
Authors: Zou Ji Nan , Wei Hong
Published: December 2012

The study shows that geological disasters caused by mining is different from the natural one, which has a lagging effect and the persistence, and causing some epigenetic disasters. Some long term effect phenomena are described in detail, their causes are discussed, and some prevention and cure measures are also posed out in this paper.
Use of Ornamental in Phytoremediation of Heavy Metals in Sewage Sludge
Authors: Li Shu Geng , Zhang Ke Fang , Zhang Li Qiu , Chen Qiu Li
Published: December 2012

Goosegrass Herb ( Eleusine indica ) and Canna (Canna indica L.) were used to remove the heavy metals of Cu, Zn, Pb, Cd, Cr and Ni in the sewage sludge by potted planting. Taking the soil mixed by sludge and crimson soil according to sludge percent 25% to cultivate Goosegrass Herb and increasing the harvesting times could enhanced the removal efficiency of heavy metals significantly. Goosegrass Herb could be considered as the remediation plant for Cu, Zn, Cd and Ni. By Canna planting, final Zn, Ni and Cd contents in soil mixture could be reduced significantly, Canna could be used to reduce the Cd ,Ni and Zn concentration in sludge amended soil.
Research on Secondary Resource Utilization and Mining Damage Control in Gob-Effect Gypsum Mines
Authors: Ren Gao Feng , Qian Zhao Ming , Hu Zhong Chun
Published: December 2012

Room-and-pillar mining method plays a dominant role in gypsum mines, which owns a low resource recovery ratio and has left many gobs leading a series of safety production problems to mining enterprises. To get an utmost resource recovery and avoid gob collapse, a secondary utilization scheme has been made by feasibility analysis and theoretical calculation. In this scheme, theoretical calculation about the occurrence conditions of mining damage has been done, and the deep research direction of the mining damage mechanism in gob-effect gypsum mines has been pointed out. This research and its train of thought could provide the gob-effect gypsum mines with reference that would increase ore recovery ratio and prevent mining damage.
Research of Tourism Town Planning Based on Symbiosis Theory - A Case Study of Controlling-Detailed Plan of Drift Town, Qingyuan City
Authors: Zhang Jun Jie , Sun Yong Long , Shan Kuang Jie
Published: December 2012

The symbiotic integration development of Tourism small town about tourist area and town is an inevitable problem in reality, we need to be studied and guide practice. Based on the new perspective of the symbiosis theory, to controlling-detailed plan of Drift Town, Qingyuan city, as an example, uses qualitative analysis and index quantitative study combination of methods, through excavating and creating symbiosis between units symbiotic conditions, construct the town - - the symbiotic development innovation mode; Through the tourism small town symbiotic land layout, symbiotic unit controlling technology of special tourism small town strategic development become "town (CBD) - tourist area (RBD)" eutectic body, realize the interaction and integration of urban ecological development.
The Queuing Model and Simulation of Container Terminal Based on Liner Transport
Authors: Gui Jing Song , Yang Chun Xia
Published: December 2012

The liner transport has brought enormous influence on the liner ship company and the container port. The most obvious change is the arrival time of ships, which is restricted by the corresponding schedule timetables. Based on a hypothesis that ships reach port completely randomly, thus, the traditional queuing model is no longer suit for modern container terminal. Therefore, a new queuing model is suggested in this paper. And a simulation for the service system is also developed. Results of numerical examples show that the proposed queuing model is significant to the construction and operation of container terminals
Evaluation Model of Public Transportation Hub Based on Yishan Road Station, Shanghai, China
Authors: Yang Ya Li , Chen Hao , Zhang Ruo Ping
Published: December 2012

With the development of rail transit, interchange efficiency is more and more important. This paper conducted model based research on interchange evaluation based on Yishan Road station in Shanghai, China. Interchange evaluation model was established by combing Fuzzy Method and Analytic Hierarchy Process. Calculation result showed that established model can be used to evaluate the interchange performance of Yishan Road station. The implementation of this model is demonstrated its usage on interchange efficiency evaluation. Further study should be conducted to optimize the interchange arrangement in Yishan Road, to improve interchange efficiency.
Information Sharing Framework for the Integrated Collaborative Operation in Through Transport of Railway Freight
Authors: Chen Wei Ya
Published: December 2012

High efficient information sharing is the key factor to realize the integrated collaborative operation in through transport of railway freight. This paper presents a framework of information sharing among the railway enterprises and their customer enterprises. The information sharing demand was categorized into information sharing for demand-supply matching and the integrated collaborative operation. The information sharing content was defined according to the information sharing demand. Base on the current information technologies utilized in China’s railway freight transport, the framework of information sharing was constructed from four aspects: the hierarchy of information sharing, the mode architecture of information sharing, the methods of information collection and the supporting conditions of implementation.
Study on the Assembling Regularity of Passengers at Large-Scale Railway Station
Authors: Huang Le , Lv Yong Bo , Ren Yuan
Published: December 2012

This paper based on the surveys of Beijing West Railway Station, Guangzhou Railway station, Xi'an Railway Station, Zhengzhou Railway Station, Jinan Railway station and Shangqiu Railway station. Looking over the tickets of passengers and recording the time when they enter into the stations, a waiting time model is established on the basis of logarithmic normal distribution theory. The number of passengers assembling in a station is found after the logarithmic normal distribution model is used to deal with the rule of passenger arriving and the uniform moving law is applied in passenger departing.
Optimization on Configuration of Handling Equipment in Railway Container Terminal during Operation
Authors: Ye Fei , Xie Hai Hong , Jin Xin
Published: December 2012

Configuration of handling equipment in railway container terminal during operation is vital for improving economic performance and raising competitiveness. Aiming at reasonable investment of handling equipment in railway container terminal, Binomial probability is built analyzing relationship between owned equipment, equipment attendance number and serviceability rate. Equipment dispatching assurance rate is discussed. A case is studied to testify the model. In the case, a table of probability distribution of the number of the equipment used is listed to achieve the best number for attendance equipment, the number of owned handling equipment with different serviceability rate and best equipment attendance number is tabulated for searching the best equipment attendance number. The result is operable.
Exploration about the Stratagem of Sustainable Development of Small Town Planning in China
Authors: Yang Yu Nan , Yu Fei Fei
Published: December 2012

Small town is a basic and important part in Chinese town system. Sustainable development of small town is significant content of the work to modernize economy. Yet due to improper micromanagement, the current construction of small towns in China is in serious disorder. And this is imposing restraints on sustainable social and economic development. This paper arguments the strategic problems about the sustainable development of small town from several aspects such as historical meaning, actuality, arrangement and structure and so on.
Dynamic Pricing for Multiple-Class High-Speed Railway on the Internet
Authors: Yang Qing Qing , Xu Li Ping , Yang Yue
Published: December 2012

By incorporating a cumulative distribution function of the maximum permissible purchasing price, a discrete time dynamic pricing model is developed in which the high-speed railway can set its prices at the time of booking request arrivals. The dynamic pricing policy included suitable price for the opened booking classes with respect to different combination of booking statues and remaining planning time, and when to close those opened booking classes.
Research of High-Speed Railway Running Economic Benefit Based on Gray Model
Authors: Du Xue Dong , Ren Na
Published: December 2012

The research of high-speed railway running economic benefit is important to timely know well the train operation state for the railway administration. A prediction model of high-speed railway running economic benefit is proposed in this article based on Gray model. The Gray model is a good example to make accurate prediction of the development of matters. According to the data analysis of Beijing and Shanghai railway stations, we can know that the result of prediction model is accurate, so the prediction based on Gray model is scientific and reasonable in the practical application.
Traffic Performance of Signalized Intersections with Protected Pre-Signal Established Upstream
Authors: Zhou Ya Ping , Zhuang Hong Bin
Published: December 2012

An intersection with protected pre-signal is proposed in the paper to explore the potential capacity of intersections. The space between the main signal and the pre-signal is isolated as an exclusive waiting area. The relationship between the capacity and the arrival rates in the design is investigated and the sensitivities of length of waiting area, signal timing and arrival rates are presented. The comparison among Continuous Flow Intersection, the method Xuan (2011) proposed and the design in the paper is proposed. The results show that Median U-Turn intersections with protected pre-signal is expected to increase the capacity and decrease the average delay of intersections.
Determining Bridge Maintenance Priorities by Time Series-Based Multi-Attribute Decision-Making Method
Authors: Zhu Jin Song , Yang Yun
Published: December 2012

It is important to prioritize maintenance needs to bridges that are most significant to the functionality of the entire network under budget constraints. In this paper, the network-level bridge maintenance planning problem is solved by time series-based multi-attribute decision-making method. First, the decision-making matrix composed of index value is introduced and then growth matrix of each time sample points is derived from decision-making matrix. Second, the composite indicator values and integrated growth index values of each bridge can be calculated through the information entropy. Third, the sort of bridge combination of value is counted by composing the composite indicator values and integrated growth index values of each bridge. According to the sort of bridge combination of value, it is easy to obtain a bridge maintenance order. Finally, as an illustration example, time series-based multi-attribute decision-making method is applied to an existing 10-bridge network and proved the effectiveness and feasibility of the proposed method.
The POI of Highway Transportation and its Visual Search
Authors: Ma Xu , Cao Yan , Mu Xiang Wei
Published: December 2012

This paper bases on the description of the traditional POI and the concerns of modern logistics and highway transportation, concludes and abstracts the POI of highway transportation, classifies the POIs and also give detailed description for every classification. Then we extract the visual search model for POI of highway transportation and realize the model. By using the model, the operator can get more meaningful guidance and can reduce the costs of transportation.
The Research on Electric Bus Operation Intelligence Scheduling Model and Algorithm
Authors: Gao Song , Zhang Pei Pei , Tan De Rong , Zhang Xiao Lin
Published: December 2012

Electric bus is different from traditional bus. Its operation scheduling is constrained by the charge time, discharge time and driving range. On the base of full consideration of the electric bus driving range and charging time, the electric bus scheduling model is built. Then a genetic algorithm is selected to solve the model. Finally, an electric bus route in Zibo City is taken as an example, to adopt modeling and solving. The results verify the applicability of the model and algorithm.
A Short-Term Combination Forecasting Model for Traffic Flow Based on the BP Neural Network
Authors: Cheng Tie Xin , Du Wen Bin , Chen Jing Zhu
Published: December 2012

The forecasting for short-term traffic flow has always been one important and difficult research focus in the traffic forecasting areas. Based on the BP Neural Network, which was applied to nonlinear problems, the independent short-term forecasting models for the different traffic flow of the continuous time point series in one day and the constant date series at same time point were set up respectively, then, a short-term combination forecasting model for traffic flow, in which the regular fluctuations in the traffic flow data of the continuous time point series in one day and the constant date series at same time point were fully considered, was established, and can be applied to the complex spatio-temporal features of short-term traffic flow. With the sample of traffic flow dada, the forecasting results of the different models showed that the combination forecasting model provided a better forecast accuracy than the independent models.
Optimization of Vehicle Routing Problem Based on Multi-Objective Genetic Algorithm
Authors: Zhong Ru , Wu Jian Ping , Du Yi Man
Published: December 2012

When there are multiple objectives co-existent in Vehicle routing problem(VRP), it is difficult to achieve optical status simultaneously. To solve this issue, it introduces a method of improved multi-objective Genetic Algorithm (MOGA). It adopts an approach close to heuristic algorithm to cultivate partial viable chromosomes, route decoding to ensure that all individuals meet constraints and uses relatively efficient method of arena contest to construct non-dominated set. Finally programme to fulfill the multi-objective algorithm and then apply it in the standard example of VRP to verity its effectiveness by comparison with the existing optimal results.
Algorithm Design of Micro Inertial Strap-Down Heading and Attitude System
Authors: Li Jie , Fan Cheng Ye , Liu Jun
Published: December 2012

The base theory of micro-inertial strapdown head and attitude systems is expatiate on, and the calculating processes about the strapdown attitude matrix and the body head and attitude angle were discussed thoroughly，at the same time the method of refreshing strapdown matrix by using the quaternion was introduced emphatically. Finally, the result and its analysis about the simulation experiment are given, and the correctness and the validity are proved, some references for our researchers in this field are provided.
Architecture Design for Intelligent Vehicle Computing Platform Based on Internet of Vehicles
Authors: Wang Qiong , Yu Yan , Tang Zhen Min
Published: December 2012

Traffic congestion, accidents and caused environment pollution have become the common problems faced by the world. So how to improve traffic of city has become the focus of the global concern. The development of intelligent computing, Internet of Vehicles, wireless networks and so forth have provided a new idea for solving the increasing transportation issue in cities. Intelligent vehicle computing platform is key component of Internet of Vehicles. In this paper, we discussed the intelligent vehicle computing technology and proposed the architecture of intelligent vehicle computing platform.
The Analysis of Behavioral Responses to Transit Information
Authors: Sun Rui , Yu Hai Tao , Du Yong , Geng Song Lin
Published: December 2012

Road conditions, time for travelling and transfer information can be provided by transit information service system for the person travelling during the trip. The system can help people to select more reasonable routes, which can improve the travelling efficiency and attract more and more people using public transport. Based on the survey of transit information service in Beijing, this article will analysis the demand types of transit information. The effects of transit information-travel mode selection can be researched by ordered logit model. The results indicated that the passengers prefer static information at present. The information contains various elements for people travelling such as gender, main travel mode, average waiting time and the accuracy of transit information, demand types and releasing devices. These factors will impact passengers on selecting and changing their mode choice.
On Hybrid Control System Methods for Traffic and Transportation System
Authors: Meng Xue Lei , Jia Li Min , Qin Yong , Xu Jie
Published: December 2012

Hybrid system is a whole system in which the discrete part and continual part interact each other. It discusses the definition and the character of the hybrid systems. Then the hybrid characters of the traffic and transportation system is described. It sums up the hybrid system methods of studying transportation system, points out the shortcomings of the current studying methods and forecasts the future studying fields and methods.
Milk-Run Vehicle Routing Optimization Model and Algorithm of Automobile Parts
Authors: Ma Hui Juan , Wei Jing
Published: December 2012

With the rapid development of automobile industry, auto parts logistics emerged as an important part of promoting industrial development. Milk-run is used more and more frequent in auto parts supply. Based on the characteristics of auto parts requirement and milk-run, in order to satisfy the requirement of OEMs, the distribution center takes milk-run supply logistics model to a variety of vendors, using the idea of third party. The design of automobile parts milk-run vehicle routing is the problem of designing the non-full set of goods vehicle routing with time window. This thesis established a vehicle routing model with time window, studied milk-run vehicle routing of automobile parts, used the particle swarm optimization to solve the problem of the example, and obtained a satisfied results in acceptable time. It also verified the validity of the model and algorithm.
Definition of the Logistics Park Hinterland Based on Weighted Voronoi Diagram
Authors: Zhang Yi Bin , Wu Gang , Peng Wen Xiu , Chen Yan Ru
Published: December 2012

Accurately defining the radiation scope of the logistics park is the basis of the rational planning of the logistics park as well as further improvement of the regional logistics efficiency, but currently there is still a lack of scientific and systematical theory focusing on the research of defining the radiation scope of the logistics park. Therefore the concept of ‘hinterland’ was introduced into the research of the radiation scope of the logistics park, and the concept of ‘logistics park hinterland’ was particularly proposed. Subsequently, based on the Voronoi diagram theory in computational geometry which reflects the advantage of the continuity of space division, and by introducing the ‘scale’ parameter in the breaking-point model into weighted Voronoi diagram, the model based on weighted Voronoi diagram to define the logistics park hinterland was built. Finally, this model was practically applied to the planning example of ‘Four logistics centers’ of Chengdu, and also by means of GIS software the respective hinterlands of ‘Four logistics centers’ of Chengdu were defined. It practically proves that this model overcomes the shortcomings existing in the conventional single space division theories and methods such as the breaking-point model and the ordinary Voronoi diagram theory, which makes the definition of the logistics park hinterland more reasonable and scientific.
Reseach on the Optimization of Chemical Logistics Park Internal Areas Layout
Authors: Ji Shou Wen , Zhang Shun , Lin Feng
Published: December 2012

The number of chemical logistics park increases very fast in our country. The thesis uses the thought of SLP to engage in applied research with examples. By analyzing logistics factors and other factors, determine the relativity between districts. Regarding to each district's operation area, applied the methods of correlation diagram and the methods of dynamic-line arrangement separately to design the positions of each district. Finally, give a simple comparison and conclusions to the two methods.
Planning and Design of a Kind of Monitoring System for Logistics Transportation Security
Authors: Zhao Lu Hua , Gao Nai Xiu , Cao Qing Gui
Published: December 2012

In order to decreases logistics transportation accidents and improves its security level, based on the analysis of the causes of logistics transportation accidents and the logistics transportation process, along with the technologies such as information acquisition, tracking and positioning, data communication etc., the paper planned and designed a monitoring system so as to to monitor the whole processes of logistics transportation. It also puts forward a practical scheme to monitor the efficiency of braking system in real time so as to decrease some heavy accidents caused by braking failure of trucks. The system can find the potential safety hazard in time and make an early warning, thus to avoid logistics transportation accidents. It plays a significant role in decreasing accident rate of logistics transportation and protects people’s life and property.
Research of Signalized Intersection Delay Problem by Time Series and Queuing Theory
Authors: Xue Lian
Published: December 2012

Signalized intersection delay is an important evaluation index of the signalized intersection capacity and level of service. This paper presents a signalized intersection delay model for signalized intersection. The model uses time series and queuing theory. It discusses the operation characteristics of the process of arrival and leaving and optimizes the intersection signal timing and gets the best signal cycle time. A scientific model and a more complete analysis are founded in the paper. These methods have a good reference value to the relevant departments.
Analysis on the Idea of Modern University Campus Planning Based on the Place Spirit
Authors: Cui Zhe , Wen Tao
Published: December 2012

Campus planning is challenged with the development of higher education. Analyzing the relationship between place sprit and campus planning, the paper discussed the necessity of opening, dynamic and romantic in campus planning which presents a new idea for campus planning.
Identify Intersections, Curves and Bifurcation Junctions from GPS Traces
Authors: Su Ke Hua , Wang Hao Feng , Zhang Yu , Cheng Hong
Published: December 2012

With the increasing popularity of route guidance systems, it becomes more important for such highly advanced applications as the cross detection to induce road maps with a higher accuracy. In this paper, we present a novel approach to induce higher-precision maps with the help of the GPS data, mainly identify intersections, curves, and bifurcation junctions. Our approach consists of several successive processing steps: Firstly, try to find out areas where the distribution of GPS feature points is very intensive. Then, analyze the characteristic of the intersections and attach some restrictions to filter out the intersections, curves and bifurcation junctions which meet with our conditions. We also propose this method to improve the efficient of our algorithm. Among the new contributions are a creative method that connects both the TargetRegion_Detect algorithm and the AbnormalPointFilter algorithm which helps us identify the three forms of roads mentioned above and induce road maps with a higher accuracy.
Evaluation Model and Method for Comprehensive Benefit of Water Transport
Authors: Fan Xiao Biao , Wang Dong , Shi Chao Feng , Zhang Dan
Published: December 2012

In addition to the benefits of added value, water transport can bring many other economic and social benefits. This paper analyzes the outstanding advantages of waterway transport cost, safety, environmental protection and employment. Combined with added value, the paper has built the evaluation model for water transportation economy and comprehensive social interest and taking Chongqing as examples of the application analysis, the empirical results indicate that the model is feasible and valid.
Optimization of Variable Guiding Lanes'Function at Signalized Intersections
Authors: Lin Hao , Zhang Ning , Chen Jun
Published: December 2012

This paper brings forward a method to improve the efficiency of the variable guiding lanes. It shows the proper time to change the direction of variable guiding lanes, and a new method to clean out the vehicles on the variable guiding lanes. In condition of a low flow of left-turning vehicle but a high flow of straight vehicle, or the opposite situation, the directions of the variable guiding lanes are different. In the certain of the signal cycle, we changed the direction and gave the proper time to clean out vehicle on the variable guiding lanes, and then the vehicle of different directions can run smoothly. Furthermore, it decreases the delay of the whole intersection and the risk of conflicts.
An Improved Method of Traffic Control Period Division for Intersection Based on Signal Cycle Calculation
Authors: Dai Lei Lei , Sun Zheng Liang , Liu Dong Bo , Li Ya
Published: December 2012

A simple and practical method of intersection control period division was proposed from the urban traffic control perspective. According to the historical statistics of the traffic volume, considering the differences of traffic flows, and based on the process of average hourly traffic volume, the method could calculate the cycle length of signalized intersection, set determination threshold value of control period, and divide 24h a day into several control periods, which provided a scientific basis for the establishment of signal timing programs with multiple periods a day. The calculation results showed that this method was agreed with the actual traffic flow compared with the traditional method.
Financing Strategies of China’s Indemnificatory Housing Construction Based on REITs Mode
Authors: Zhang Yang , Zhang Qing
Published: December 2012

The construction of indemnificatory apartments in our country is now facing the dilemma that short of funds and financing channels. Though REITs can be an effective way to solve the problem, it has some obstacles in developing in China such as legislative vacancy. Draw lessons from American REITs pattern, the author provided four ways to improve the management of China indemnificatory apartments financing pattern, that is, to establish management system, establish operation system, provide text preference, and to establish professional operation system team.
Research on Pedestrian Simulation for Distribution Space below Rail Lines of High-Speed Railway Station - Take Hefei South Railway Station for Example
Authors: Zhu Yan Dong , Shan Jin , Yan Ping , Chang Wen Jun
Published: December 2012

In order to optimize the space below railway lines of high-speed railway station, a pedestrian traffic simulation was presented. Hefei South Railway Station was taken for example, and the cumulative mean density, space utilisation, evacuation parameters of space below rail lines were analyzed according to the layout of yards and traffic organization schemes. In addition, the passengers’ distribution to different transportation modes, which includes subway, bus, and taxi, was also valuated.
Study on the Optimal Improvement of the Bus Station
Authors: Jiang Wen Hua , Wang Xian Xiang , Lin Hang Fei
Published: December 2012

Starting from several aspects of site location, site size and site layout, this document studies the urban bus stop systematically, proposes the setting principles of urban bus stop. Take Yiwu bus stops for example, which focus on the analysis of the reasonable setting of the sites, and has provided guidance for the layout of urban bus stop.
A Learning Model of Passenger’s Path Choice in Urban Rail Network Based on Bayesian Method
Authors: Du Shi Min , Luo Qin , Zheng Yu , Kong Ling Yang
Published: December 2012

To determine passenger’s path choice is the base for research on ridership distribution in urban rail network. Considering passenger’s multi-days’ trips as a process to continuously update path information expressed by its sample mean and variance of travel cost, the paper establishes a self-learning model of passenger’s path choice in urban rail network based on Bayesian method by analyzing the acquisition of prior information beforetrip and knowledge updating after trip, as well as taking the adjustment of Urban Rail Transit operating conditions into account.The model proposed can be used to analyze the passenger flow formation and evolution mechanism in urban rail network.
A Preliminary Study of New Rural Development in Context of Local Characters and Identity
Authors: Dong Wen Qi , Liu Yuan Ping
Published: December 2012

The case of Wangguo Village was taken to exemplify the planning under the new rural development program in the perspectives of farmers’ daily life, behavior and sense of identity. This research examined the characteristics and contents of the planning under the new rural development program and proposed the recommendations on the planning and implementations.
Study on Urban Rail Transit Platform Aggregation Passenger
Authors: Wang Fang Fang , Zhang Xiu Yuan , Wang Gang
Published: December 2012

It is the basis for increasing attraction of rail transit and maximizing the attraction of public transport to focus on summarizing the pattern and experience of growing rail passenger flow, and studying the characteristics of trip assignment. This paper studied specifically on the passenger assembling of the urban rail transit platform, and designed the calculation methods about assembling passengers on platform through the analysis of passenger flow characteristics. Based on the specific situation of the subway of Beijing south station, this paper analyzed the assembling of platform and obtained assembling data under different conditions. The result shows that, in order to smooth the assembling of platform, we could reduce the train arrival time-gap, stagger the up and down train’s arrival time and increase their arrival time-gap in a proper way.
Development an Urban Rail Transit Network Scale Model
Authors: Xin Xin , Guo Yan Yong , Wu Yao , Song Ti
Published: December 2012

The network scale is an important indicator of the urban rail transit. In order to determine a reasonable scale of rail transit network, this paper analysis the influencing factors of the urban rail transit network scale. Furthermore, the main indicators of the network are summed up and analyzed. And a model of rail transit network scale is proposed based on the traffic demand. Finally, a case study of Xi'an is used to validate the model. The result shows that the model is effective and practical.
The Evaluation of Public Transport Development in Fuzhou City
Authors: He Ai Xia
Published: December 2012

According to statistical and survey data, evaluation of public transport development is discussed based on gray clustering method in Fuzhou City in this article. The result show vector the biggest clustering coefficient is 0.27931 which reflect the level of development of urban public transport is the middle. In order to provide the basis of the planning, construction, and management by public transport evaluation for Fuzhou City to further development.
Merging Gap Acceptance at Midblock U-Turn Facility (A Case Study on Multilane Divided Highway in Malaysia)
Authors: Abbaszadehfallah Iman , Esmaeeli Hamed , Bin Chepuan Othman , Hosseini Seyed Hossein
Published: December 2012

A midblock U-turn facility is often provided on multilane divided highway to manage direct right turn maneuvers from main stream. Mid block U-turn facility provides a safe turn for drivers who want to change their directions. As the number of vehicles in major road increase, the driver who wants to do U-turn faces more difficulties to find a suitable gap. This study is conducted to find a critical gap acceptance and empirical relationship between U-turning delay and volume on near-side traffic lane at midblock U-turn facility in multilane divided highway. Methodology of the study was observation and in order to have a precise data, video recording technique was used. Greenshields gap acceptance method was used to analyse the data. Through the collected data, a total of 916 rejected gaps and 810 accepted gaps were used for analyzing and results show that critical gap acceptance is 3.5 sec. Meanwhile, there is an empirical relationship between delay of U-turning and volume on nearside traffic lane on major road.
The Research on the Evolution of Village Spatial Form under the Restriction of Institutions
Authors: Hao Zhan Peng , Wang Jun
Published: December 2012

Analyzed the intrinsic relationships between the change of institutions and the evolution of village spatial form under different social background. Through consulting literature and field investigation, analyzed how the change of institutions effect village spatial form.The aims are to provide a reasonable way for the evolution of village spatial form under the background of the changes in institutions.
Comprehensive Pricing Model of Urban Traffic Air Pollution Based on Bi-Level Programming
Authors: Zhao Ze Bin
Published: December 2012

In order to reduce the negative impact of urban traffic air pollution, this paper firstly analyzes the relationship between urban traffic air pollution and vehicle speed, after providing the relationship model, the paper establishes a comprehensive pricing model of urban traffic air pollution based on bi-level programming, the model considers the traffic air pollution pricing, and includes the factors of congestion pricing, bus fee, pricing revenue redistribution on improvement of public transport services and the expansion of road capacity. The case study shows that the implementation of comprehensive pricing of urban traffic air pollution can reduce traffic pollution and unreasonable traffic flow, which is conducive to the sustainable development of the city.
Algorithm of Estimating Alighting Bus Stops of Smart Card Passengers Based on Trip-Chain
Authors: Chen Jun , Wang Zhao Fei
Published: December 2012

In order to apply smart card data in decision-making of public transportation planning and management, the paper researched estimating method of alighting bus stops of smart card passengers. Based on Trip-chain thought, the paper presented estimation algorithm applying the three hypotheses of “Next Trip”, “Last Trip” and “Return Trip”. Then, the algorithm was tested and analyzed using large-scale actual data of Advanced Public Transportation Systems of Nanning City in China. The results show that Trip-chain Method can estimate majority of alighting bus stops.
Fuzzy Comprehensive Evaluation for Development Status of Urban Bus Rapid Transit (BRT) in China
Authors: Chi Li , Lei Li
Published: December 2012

Under the situation of economic development and traffic congestion in Chinese city, public transport has become an inevitable developmental trend. Bus Rapid Transit (BRT) has gained more and more attention for its fast speed, low investment, high safety. In current there are a dozen cities opening BRT in China. Although they achieve certain effect, some problems emerge. BRT development level in three cities was analyzed by Fuzzy Comprehensive Evaluation. In these three cities, the proportion of BRT intersection signal priority is low and passengers’ average travel time is long. BRT in China is still in its infancy. Technology and management needs to be strengthened and public awareness of bus priority needs to be improved.
City Intersection Waiting Area Example Analysis and Simulation
Authors: Liu Zhen , Jia Shun Ping
Published: December 2012

Concerning great urban intersection, this paper introduced the design method of vehicle-waiting area at first. Then, it analysed the improvement of traffic(mainly about traffic capacity) after the setting of such area. By having calculation for practical example, and using Vissim simulation, we worked out the situation of delay and traffic capacity after the establishment of vehicle-waiting area. And all these finally prove the feasibility of our project.
Research on the Influence of Last Digit Restriction to the Traffic Flow Characteristics
Authors: Du Hao Hua , Pan Meng
Published: December 2012

The Beijing government is taking measures to remit traffic congestions by restriction based on the last digit on a license plate, which influences the characteristic of traffic flow. This paper first builds a model about traffic flow characteristic, including vehicle velocity, roadway reliability and traffic congestion recovery time. The paper also researches different pattern of vehicle velocity before and after the rail number restriction, analyzes the changing trend of road-mobility reliability with traffic demands, and calculates the pattern of traffic congestion recovery time between the restrictions. The result indicates that when traffic flow’s density is large, the vehicle’s velocity is increased to 180% of the original after the restriction; and the recovery time from congestion to smooth is decreased to 75.8% of the original; after taken the restriction measures, the road unblocked reliability in Peak hours is increased, and the traffic condition ameliorate evidently.
Residence Block Design Methods Based on the Concept of Sustainable Development – A Case Study of Residence Block Design of Wuhan
Authors: Hu Shan , Li Jun , Clément Noël Douady
Published: December 2012

The field of sustainable development can be conceptually broken into three constituent parts: environmental sustainability, economic sustainability and sociopolitical sustainability. This paper uses the case study of Wuhan Shouyi area residential block urban design, discusses the concept of sustainable development of residential block urban design. In the current trend of residential district design, this paper may be able to lead to some better residential block planning design.
On Building Low-Carbon Public Transport System
Authors: Li Yong Fang
Published: December 2012

Building low-carbon public transport system is an important part of low-carbon urban transport sector. On the basis of analysis of the concept, meaning and significance of low-carbon transport, this paper analyzed the need to build low-carbon public transport system, and from the aspects of planning, technical, management and travelers, proposed appropriate measures to build low-carbon public transport system. Finally, the paper guided the traveler to consciously low-carbon travel. Through taking more measures to build low-carbon public transport system, we can achieve the sustainable development of urban transport.
The Impact Analysis of Signal Intersection Right-Turn Motor Vehicles on Straight Bicycles
Authors: Wang Lin , Jia Shu Ping
Published: December 2012

The characteristics of the intersection of bicycle was studied through survey and data analysis, and we got straight bicycle losses flow calculation formula under the influence of right turn motor vehicle. Through simulation to analysis the impact of its capacity further when motor vehicle traffic, plus the deceleration and the proportion of bus changes, and measures were proposed to improve bicycle capacity.
Optimal Train Size and Headway for Urban Rail Transit System
Authors: Liu Xue Jun , Mi Chuan Min , Wang Yuan Yuan , Shi Wei Vivien
Published: December 2012

An analytical model and a solution procedure are proposed to optimize train size and headway for an urban rail transit system wherein passengers demand is assumed to be sensitive to fare and the level of service, in terms of load factor and waiting time. It is found that an optimal temporal headway and train size for different demand distribution that maximizes profit and minimize total system cost for the studied subway system can be efficiently solved.
Study on the Public Transport Routes under the Principle of Public Transport Priority
Authors: Cao Hong Yan , Liang Qi Long
Published: December 2012

In order to alleviate the traffic problems, development of public transport routes is gaining more attention nowadays. Based on the case study of several public transport routes, this paper explores this new development model which gives priority to public transportation. The author studies the background, the operation features and the innovative values of these routes. The study proves that public transport routes will not only solve the transport difficulties, but will also enhance the policy of public transport priority.
Analysis on Influencing Factors of Energy Intensity in Anhui Province
Authors: Han Ya Fen , Li Qi
Published: December 2012

Based on analysis on dynamic characteristics of energy intensity in three industries of Anhui province from 1995 to 2009, decompositions of energy intensity’s dynamic change was investigated proceed year by year, by the Laspeyres model. The result showed that: the reduction of energy intensity in the past decades was attributed to the improvement of industries’ energy efficiency, especially the improvement of secondary industries’ energy efficiency. At last, theoretical basis was provided for the adjustment of the secondary industries’ energy structure, by contrasting correlation coefficient of energy structure and energy intensity in the secondary industry.
The Exploration and Research of CRTS I Slab Ballastless Track Used in the Freight Lines
Authors: Peng Dong Hui , Wei Zi Sen , Liu Jue Fei
Published: December 2012

The CRTSⅠslab ballastless track structure was the research object of this thesis and the truck vehicle-track dynamics coupled model had established in this thesis. Germany track interference spectrum was used as the track irregularity. The study analyzed the force conditions of the CRTSⅠslab ballastless track under the action of heavy freight trains in 110km/h, as well as the wheel-rail vertical force, vertical displacement and acceleration of the rail and rail board changes with time. The results show that the CRTSⅠslab ballastless track can meet the basic requirements of freight line.
Study on Lane Changing Characteristics of Double-Articulated Bus Based on ADAMS
Authors: Zhao Kan , Li Qiang , Yang Chao , Liu Jian Nong
Published: December 2012

In this paper, using mechanical system dynamic simulation analysis software ADAMS, we create a multi-system dynamical model of an oversize double-articulated urban bus based on multi-body system. And then, we conduct the simulation test of changing lane of this vehicle with different front wheel angle for studying its lane changing characteristics as well as the influence degree to the surrounding vehicles; give a comparison analysis of the simulation result and the sample vehicle road test result, and verify the correctness and reasonability of the created virtual prototype model. The study result shows that the created digitized virtual prototype can effectively analyze the lane changing characteristics of the oversize double-articulated bus.
The Analysis and Evaluation of Land Cover Change in Xining City Based on CA-Markov Model
Authors: Meng Xiao Qian , Chen Yi Jin
Published: December 2012

Cellular automata model is a dynamic evolution model with discrete space and time, it is powerful in spatial modeling and parallel computing, so it can take advantage of workstation to simulate the transformation process of complex spatial system. Using a model based on cellular automata to forecast the development of Xining has a great benefit for the urban development. Markov Chain model is widely used in forecasting a system which is changing smoothly, the Markov Chain would provide transition rules for the cellular automata. The main task is predicting the land cover of Xining in 2020 based on CA-Markov. and analyzing the characteristics of change of Xining between 1996 and 2020. Finally, some useful advices are provided for the current urban planning by analyzing the driving factors.
CGSA Control Methodology Applied to Ship Integrated Rudder and Fin Stabilization System
Authors: Guan Wei , Su Zuo Jing , Zhang Guo Qing
Published: December 2012

In this paper, a mathematical model for ship rudder and fin integrated control system is present. The closed gain shaping algorithm (CGSA) strategy is applied to design an integrated rudder and fin stabilizer to overcome the arbitrary selection of weighting function in H∞ mixed sensitivity robust controller design procedures. The CGSA methods give a relatively more concise and reliable design method for the ship rudder and fin integrated control system. The simulation results show that the ship CGSA rudder/fin integrated controller can satisfactorily achieve roll motion reduction and yaw stabilization simultaneously as well as guarantee the levels of robust stability and control performance in the different sea conditions.
Parameter Design of Powertrain and Experimental Verification of Pure Electric Vehicle
Authors: Zhang Jun Hong , Yue Feng Lai , Zhou Neng Hui , Zhao Chun Ming
Published: December 2012

This article mainly introduces parameter design principle of pure electric vehicle power train. The model of a pure electric vehicle is established in CRUISE. Given motor system and battery system, vehicle performance on various transmission ratio was analyzed and the optimal ratio of transmission was determined. Dynamic performances and driving range of the vehicle was tested, which indicate that the error is smaller than 5% between calculated results and test datum. The rationality of established model is verified. The vehicle driving system meet the research targets, which has good dynamic performance and driving range.