bluuebunny/crossref_metadata_2025 huggingface dataset:
Peakons of a Generalized Camassa-Holm Equation with Bifurcation Theory of Dynamical System
Authors: Sun Min , Li Jing , Quan Ting Ting
Published: December 2012

In this paper, the peakons and bifurcations in a generalized Camassa-Holm equation are studied by using the bifurcation method and qualitative theory of dynamical systems. First, the averaged equation is obtained by introducing linear transform and traveling wave transform to the generalized Camassa-Holm equation. Then, we applied the bifurcation theory of planar dynamical system and maple software to investigate the averaged equation. The phase portrait of the system under a parameter condition is obtained. Finally, we get the peakons from the limit of general single solitary wave solution.
Research on Relevance Modeling Method for Equipment Testability in Manufaturing Process
Authors: Li Fang , Liu Gang , Di Peng
Published: December 2012

The task of equipment testability design should be carried out during manufacturing process, to improve the diagnostic capabilities of equipment. According to the equipment testing requirements, equipment failure modes and effects analysis were completed, all possible failure modes of the equipment design and manufacturing process were ensured, as well as the causes and impact of each failure mode, whereby the equipment functions and structure were divided. Then, the relevance model was used for testability analysis and modeling of equipment in manufaturing process, relevance graphical model and mathematics model of component units related to equipment were builded, and the preferred method was used to consider the reliability and cost, the equipment diagnostic tree was builded, the equipment testing program was presented. A numerical example indicates that the study can effectively improve the efficiency of the equipment testing and enhance the economy of the test in manufaturing process.
Resolve Product Harm Crisis for Manufacturing System: A Simultaneous Equation Model
Authors: Fang Zheng , Yang Yang , Deng Fu Min
Published: December 2012

Product-harm crisis which can also be defined as: well publicized events wherein products are found to be defective or even dangerous. Product-harm crisis often occurs in manufacturing system and has negative impacts on companies. This paper implemented empirical research and structural equation model to study how repair strategies protect purchase intention of brand and restore satisfaction of manufacturing system. Based on the empirical result, we suggest that managers should consider consumers’ perceived fairness to the repair strategies and focus on how win consumers’ forgiveness, so as to maintain customer satisfaction of manufacturing system.
Composite Dispatching Rule Design for Photolithography Area Scheduling in Wafer Manufacturing System with Multiple Objectives
Authors: Wang Sen , Zhang Peng , Qin Wei , Zhang Jie
Published: December 2012

This paper investigates the photolithography area scheduling problem in wafer fabrication system, with the objective of simultaneously optimizing multiple performance measures. It has been known that photolithography area is usually the bottleneck work center of a wafer fab, and the scheduling problem in this area plays a significant role in improving the performance of the fab. Most studies of this problem have been focusing on only single objective. Therefore an approach for composite dispatching rule design is proposed to tackle this problem with multiple objectives, and the composite dispatching rule is a linear combination of several elementary dispatching rules with relative weights. Results demonstrate that the composite dispatching rule achieved a great improvement on every objective, compared to the performance of single elementary dispatching rule.
An Improved Fault Transfer Table Based Fault Modeling Method in Etch Process of Semiconductor Wafer Manufacturing System
Authors: Song Jian Hai , Yang Jun Gang , Zhang Jie
Published: December 2012

Fault model and detection in etch process is one of the key point problem in Semiconductor Wafer Fabrication System. A well developed fault modeling and detecting method in this process contributes greatly to the yield and Overall Equipment Effectiveness. The etch process has its unique characteristics like abundant variables, huge collections of data and nonlinearity in most batch processes; hence it poses difficulties to traditional modeling methods. In order to demonstrate the detail characteristic of faults in etch process, an improved fault transfer table based fault modeling method is proposed in this paper. The main idea of this method is to illustrate the indications, faults and their relationships in logical equations. The experimental results of an industrial example show that it has advantages such as simple expression and high capacity of information, and therefore is especially useful for the fault detection and diagnosis of semiconductor manufacturing.
Research on Cone Angle of Cutter Head for Big Diameter Shaft with Analysis of Drilling Mechanics
Authors: Luan Zhen Hui , Cai Lian Jie
Published: December 2012

In order to get a high drilling speed of shaft of nearly 13 m diameter, the authers studied on the shape of the cutter head, particularly about the cone angle. The paper discussed the motion process of slurry of drilling shaft, analysed the forces on the cutter head, and the forces on the cuttings and the motions of the cuttings in slurry. The results show that, the cone angle of the cutter head can be minished at least 20 degree.
Research on the Ship Motion Simulation Platform for Three Degrees Based on Seasickness Test and Kinematics Analysis
Authors: Zhang Zhi Wei , Li Song , Cong Kai , Song Jin Chun
Published: December 2012

A new structure of ship motion simulation platform and its hydraulic control system were designed. Matlab/Simulink was used for the analyses of hydraulic control system. Virtual prototype of the ship motion simulation platform was built up by ADAMS under the seasickness test condition, and the kinematics analysis was also carried on. The results show the effectiveness on the model of platform.
Linear Statics Analysis of the Connecting Rod of a Certain Type of Continuous Mill with Mechanics Properties
Authors: Zou Chang Ping , Zhang Xiao Feng , Cheng De Rong , Lu Xu Zhi
Published: December 2012

The connecting rod of a certain type of continuous mill early produces crackle,cannot work,hindering the production.The authors are entrusted with the 3D Finite Element Analysis (FEA) of the connecting rod.On SUN workstation,utilizing the large scale Integrated-Design Engineering Analysis Software,I-DEAS,the authors have constructed accurate 3D solid model of the connecting rod,set up effective 3D FEA model,found the solution of several kinds of law of stress distribution and deformation,reached valuable conclusions.
Numerical Simulation of Atmospheric Migration of Particles from Uranium Tailings Impoundment
Authors: Peng Xiao Yong , Wan Fen , Xie Qing Fang , Zhang Xin , Huang Shuai
Published: December 2012

Based on the discrete phase model (DPM), this paper studies the concentration distribution and settlement regularity of particles which sizes are 10μm and 100μm under the wind speed of 0.5, 1, 2, and 4m/s with the method of numerical simulation. The simulation results show that the particle concentration of 10μm at the downwind direction of tailing is constantly decreasing with the increase of wind speed and migration distance, and the particle concentration of 100μm is gradually increasing, as well as the local pollution also become gradually worse. As wind speed is 0.5m/s, the local concentration of 10μm particles at the beach face of uranium tailings impoundment is higher, and there is much deposition within 2000m of the downwind direction. While the dust emission rate of 100μm is less and its concentration is lower.10μm particles are taken away by the wind, and its concentration would fall rapidly with wind speed increased to 4.0m/s. The concentration of 100μm particle would increase and local pollution becomes more serious.
Research on Reverse Logistics Mode and Implementation of EPR
Authors: Wang Ying
Published: December 2012

Extended Producer Responsibility (EPR) is a suite of policy tools for reducing the generation of wastes by promoting greater recycling and resource recovery and encouraging more sustainable product design. The concept of EPR and purpose is proposed. Three recovery modes and characteristics of the EPR are analyzed and corresponding implementation measurements are proposed.
Research on the Belt Loader Waste Rock Gravity Backfill Mining Technology
Authors: Lv Wen Yu , Zhang Zhi Hui
Published: December 2012

Backfill mining is an important technology of surface subsidence control and green mining. This paper analyzes the application condition and filling effect of waste rock gravity backfill mining, it also introduces a new waste rock gravity backfill mining technology which utilizes belt loader to transport waste rock to goaf. Belt loader waste rock gravity backfill mining can consume waste rock and achieve environmental protection, it also has the advantages of low filling cost, simple filling system, low labor intensity and safety, etc, so it can be promoted and applied in collieries widely.
Study on Spatial Planning Pattern of Urban Producer Services
Authors: Yang Xin Gang
Published: December 2012

As producer services have the characteristics of cluster development in the urban space, rational guidance on spatial patterns of producer services by means of urban planning is able to promote the industrial structure readjustment and spatial structure optimization, and enhance the development of urban modern service industry. Based on characteristics, composition, added value and industrial chain links of producer services, this article has presented that spatial distribution of urban producer services has two patterns: cluster area and supporting center, which respectively belong to two study areas: urban master planning and detailed planning. On the basis of different cluster scales and correlations, this article also has proposed three spatial patterns: industrial parks, characteristic blocks and industrial neighborhood center.
Spatial Structure Features and Distributing Rules of Soil Heavy Metal Concentrations of Antimony Mining Area
Authors: Ren Bo Zhi , Zhou Yi , Tao Zhou Hong , Cheng Lu Jing
Published: December 2012

The spatial structure features and distributing rules of six heavy metals of antimony mining area, Cr, Cu, Ni, Zn, As, Cd and their main influence factors were researched using geostatistics combined with GIS tools. The results showed that: six kinds of heavy metal elements presented lognormal distribution. The mean of six kinds of heavy metal concentrations were higher than soil background value of Hunan province. Cd, Zn and Pb have a good correlation with each other, but the correlation between the rest elements was not obvious. The semivariogram theoretical models of six heavy metals in the study area were well fitted. The concentrations of Sb, As, Zn and Cd exhibited strong spatial autocorrelations, whereas the concentrations of Hg and Pb presented moderate spatial autocorrelations. The production activities of antimony smelter and dressing plant within the study area were the main factors for the high heavy metal concentrations of the study area.
The Natural Restoration Capability of Vegetation in Different Site Types along the Expressway 25, Lu-Su Section, China
Authors: Li Ying Yong , Zhao Fang Ying , Wang Li , Liu Fei , Wang Jing , Zhu Cheng Du
Published: December 2012

The natural restoration capability of vegetation along the expressway is of vital importance for the slope revegetation and maintenance. The Margalef 's richness indexes (DMA), Shannon-Wiener's diversity index (Hp), Pielou's evenness (Jsw), Simpson Index (C), Importance Value Index (IVtr), Vegetation coverage and soil seed bank were used to assess the vegetation restoration capability of the expressway 25, Lu-Su section in China. Seventy-four quadrats ranged from 1 m X 1 m to 20 m X 20 m were studied and the analytical results indicated that Digitaria sanguinalis, Setariaviridis and Gramineae are the dominant species in the expressway slopes. Texture is the most important factor influencing the α diversity and vegetation coverage. Cinnamon soil is more suitable for the restoration compared with slopes the other kind of texture. The land use type and alien species invasion along the expressway are also vital important for the natural restoration. The soil seed bank in filling slope is more abundant than that of excavation slope. The natural restoration of vegetation along the expressway varies according to the site types and land use and most of the slopes have strong recovery ability.
A Path Based Algorithm for Solve the Hazardous Materials Transportation Bilevel Problem
Authors: Camacho Vallejo José Fernando , Muñoz Sánchez Rafael
Published: December 2012

In this work we consider the problem of determining a set of optimal tolls on the arcs of a multicommodity transportation network. The problem is formulated as a bilevel mathematical program where the upper level consists in a government agency that regulate the traffic of the dangerous materials by imposing tolls on arcs of the network trying to minimize the risk for the population in the case when an accident occurs to the carriers, while the lower level is represented by a group of carriers traveling on shortest paths with respect to a generalized travel cost. So, the problem can be seen in a simplistic form as find the equilibrium between tolls that minimize the population exposure to the risk and tolls that are convenient for the shippers. The paper applies a path based algorithm to solve a bi-level multi-commodity optimal toll setting ‘hazmat’ problem. The algorithm consists in find upper bounds for the tolls considering the total cost and the risk associated to a particular path. We made several experiments and the results are shown in this work.
Study on the Space Utilization under the Urban Viaducts of Harbin Main City Zone
Authors: Xia Hong Jia , Gao Zao Liang , Wang Bao Jun
Published: December 2012

Viaduct is a kind of new city stereochemistry path, the accessory space of viaduct is different from the traditional two-dimensional road space. Based on comprehensive analysis to the present situation of the space under viaduct in Harbin city centre, from the perspective of urban public space to understand this type of space, used a comprehensive and in-depth summary analysis to the space under viaduct in our city. Put forward the design principle and improvement measures of space under urban viaduct aiming at Harbin, so as to provide theoretical basis in the construction of a scientific and reasonable use of the space under urban viaduct.
Experimental Research on Vibrating Compaction Characteristics of River Sand
Authors: Li Ying Yong , Cao Wei Dong , Liu Shu Tang
Published: December 2012

River sand was used for filling embankment in highway for saving land resources and protecting farmland. In order to explore vibrating compaction characteristics of river sand, the effect of vibrating frequency, vibrating time, and moisture content on the indexes of dry density and modulus were investigated using orthogonal test design. The results indicate that the dry density values increase with the increase of three factors (vibrating frequency, vibrating time, and moisture content), while the modulus values increase with the increase of frequency and vibrating time, but decrease first then increase with the increase of moisture content. Vibrating frequency has a significant effect on dry density, but both vibrating time and moisture content have no significant effect, while three factors all have no significant effect on modulus.
Prospective Prognosis of Beijing Urban Transportation Energy Consumption and Carbon Emission
Authors: Hu Ying Yue , Chen Feng , Huang Yao
Published: December 2012

In order to achieve the goal of low-carbon development of the Beijing transportation, the changing trend of the transportation energy consumption and carbon emission is analyzed based on the inertia development of the present situation or under different macroscopic regulations so as to provide theoretical reference for transportation department to formulate development strategies effectively. According to the characteristics of the Beijing urban transportation system, first a energy consumption and carbon emission calculation model for urban road traffic and urban rail transit was established separately. Then the inertia-based prediction model of Beijing urban transportation energy consumption and carbon emission was established, by analyzing the development law of the related basic parameters using regression and other methods. According to the current policies, the development and prediction of part of the parameters were limited, and a scenario forecast model has been thus established (suitable up to 2020). Four types of scenario prediction examples under different policies were presented, and the contribution rate of each policy for carbon emission was analyzed.
Research on Traveling Salesman Problem of Short-Haul Freight Transportation
Authors: Li Xiao Chen , Xu Ya
Published: December 2012

This paper mainly focus on the traveling salesman problem of short haul freight transportation, according to the objectives and the constraints of this problem, this paper gives a example to confirm the salesman problem, and the conclusion shows that the reasonable constraints is useful for short haul freight transportation.
Study on the Line Capacity on Passenger Dedicated Lines Based on the Stops Adjustment
Authors: Li Xiao Juan , Han Bao Ming , Li De Wei , Li Hua
Published: December 2012

The trains on Passenger Dedicated Lines have higher speed, less kinds of train types and less stops than that on existing lines, so the line carrying capacity on PDL can be calculated based on the stops adjustment of the trains reasonably. Based on the traditional calculation method of deduction coefficient, it makes the line through capacity has the same times and mode of stops as the deduction foundation, and get the final capacity by stops adjustment. Combining with the Beijing-Shanghai high-speed railway, it calculates the line through capacity in different condition respectively. It proves the method of line capacity calculation is available in the reality.
Study on Planning of Entrance Fairway for Sea Port Based on Maritime Simulator
Authors: Fan Yao Tian
Published: December 2012

Planning entrance fairway is a key factor for building a sea port. Generally the quantitative and qualitative analysis on planning the entrance fairway is mainly based on the standards and regulations given by the administrations. However, these standards and regulations only deal with the respective factor but cannot cover synthetic respect of considering the project feasibility. Moreover it is very tough to do a real-ship trial for a planned entrance fairway. In this paper, maritime simulator is used for optimizing the planning of entrance fairway for Fujian LNG terminal. The outcome indicates that the width of the fairway can meet the requirement of Q-Flex LNG carrier entering the port and it is suggested to do more sweeping survey and set some aids to navigation for the planned waterway.
Evaluation of Nodes Importance in of Highway Transportation Hubs Planning Based on Fuzzy-AHP
Authors: Xi Shen E
Published: December 2012

Nodes importance evaluation is the element of transportation network planning. From the aspects of society and economy, highway traffic volume, traffic location, an evaluation system on nodes importance and traffic location of Highway Transportation Junction is established. For the accuracy of evaluation, Fuzzy-AHP is applied to calculate weight of each indicator as fuzziness is existed when factors are compared mutually. Besides, case study is made in Shandong Province, results demonstrate that it is scientific and feasible for planning of highway transportation hubs.
Hubs Planning of Comprehensive Passenger Transportation Based on Fuzzy Entropy Weight Method
Authors: Xi Shen E
Published: December 2012

With the rapid development of highway construction, quickly increasing passenger traffic demand, the importance of layout planning of highway passenger terminal is becoming more obvious. Based on analyzing the forming mechanism of a passenger transport hub, an evaluation indicator system was established for a comprehensive transport hub from the perspectives of transport demand and supply. For overcoming the subjectivity, entropy theory was applied to determine the various indicator weights with fuzzy evaluation model. Finally, the indicator system and fuzzy entropy weight method were applied in Jiangsu province as a case study.
Modeling of Distribution Service Network System in Comprehensive Passenger Transportation Hub
Authors: Zhang Zhe , Ji Chang Xu , Jin Mao Jing , Li Qian , Yun Lifen , Gao Long , Lan Hong , Huang Ling
Published: December 2012

Distribution service network system (DSNS) has dynamic, open, pop and other nonlinear characteristics in terms of structure, environment, and behavior as a subsystem of comprehensive passenger transportation hub system (CPTH). It is a typical complex system. The author putted forward the adaptability of DSNS based on the analysis of complexity of DSNS and analyzed the driving force of adaptability. The model of individual agent and self-adaptive control model of DSNS were designed to provide a dynamic method for adjusting control strategy based on multi-Agent method and CAS theory.
Application of Particle Swarm Algorithm in Train-Set Circulation Problem of China
Authors: Li Hua , Han Bao Ming , Lu Fang , Li Xiao Juan
Published: December 2012

Train-set circulation problem is an important issue in operations of high-speed passenger trains in the world. On the basis of characteristics of the train-set circulation problem in China, an integer programming model is presented without considering distinct train-set types. With redefinitions of some basic mathematical objects and operations, an improved particle swarm optimization algorithm is proposed to solve the model. The algorithm is applied in a real-life case study based on the timetable of the Wuhan-Guangzhou High-speed Railway Line. The results show that the proposed algorithm is effective to find the optimized train-set circulation plan.
Guiding Model and Empirical Analysis of Vehicle Behavior at Signalized Intersections Based on Carbon Emissions
Authors: Zheng Yi Ling , Wei Yuan Qi , Xiao Ya Xing , Feng Yu
Published: December 2012

A model based on carbon emissions is established to guide vehicle behavior at signalized intersections. This model takes working conditions and emission characteristics of vehicles into account, uses VT-Micro model exploited by Oak Ridge National Laboratory to calculate emissions, and provides vehicles with the lowest-emission working plan to drive through intersections. This model is able to reducing carbon emissions at the source and it agrees with the development of low-carbon transportation.
Research on Energy Consumption and CO2 Emission for Transportation Sector in China
Authors: Huang Yin , Wang Meng Jun
Published: December 2012

This paper aims at analyzing energy consumption and CO2 emission in the Chinese transportation sector. Historical data is used to investigate the energy consumption and intensity in China. Firstly, the energy consumption values in transportation sub-sectors are reviewed. Secondly, the CO2 emission in the transportation sub-sector are calculated. At last, the review of policies such as fuel econmy standards are summarized in this study. It is found in the study that highways transport was the biggest energy consumner and the biggest contributor to CO2 emission in China. It is urgent to adopt suitable energy policy to balance the energy consumption and matierial and material production and reduce emission in transportation sector.
The Study of Traffic Simulation System Based on B/S Pattern
Authors: Kong Yuan , Wu Jian Ping , Du Yi Man
Published: December 2012

Traffic simulation is now widely accepted as one of the most appropriate analytical methods for understanding traffic capacity and for assessing the effectiveness of traffic amends. This paper studied the architecture of several pieces of popular simulation software, compared the stand-alone pattern with B/S (Browser/Server) pattern, analysed the increasing need to improve traffic simulation software by changing the stand-alone pattern, then presented a suitable architecture to realize B/S pattern for traffic simulation software, and had successfully built the Traffic Simulation WebGIS System which was based on WebGIS technology and .Net Framework. This system makes full use of WebGIS and traffic simulation technologies which can best meet traffic management needs. Users can visit the system and use the traffic simulation functions offered by remote servers through the Internet by browsers anywhere without having to install any special software on their compter or mobile machines.
Study on Multi-Depot Vehicle Routing Problem Based on Cloud Adaptive Particle Swarm Optimization
Authors: Wang Tie Jun , Wu Kai Jun
Published: December 2012

Multi-depots vehicle routing problem (MDVRP) is a kind of NP combination problem which possesses important practical value. In order to overcome PSO’s premature convergence and slow astringe, a Cloud Adaptive Particle Swarm Optimization(CAPSO) is put forward, it uses the randomicity and stable tendentiousness characteristics of cloud model, adopts different inertia weight generating methods in different groups, the searching ability of the algorithm in local and overall situation is balanced effectively. In this paper, the algorithm is used to solve MDVRP, a kind of new particles coding method is constructed and the solution algorithm is developed. The simulation results of example indicate that the algorithm has more search speed and stronger optimization ability than GA and the PSO algorithm.
Model Reference Adaptive Algorithm Designed for Automatic Train Braking Control
Authors: Luo Heng Yu , Xu Hong Ze
Published: December 2012

This paper investigates the automatic train braking control problem of ATC (Automatic Train Control) system under uncertain disturbances. An adaptive control algorithm is developed to ensure high precision tracking performance of the acceleration during the braking process, according to a standard reference model which has been widely used in the urban vehicles. The control parameter’s adaptive law is strictly deduced based on the Lyapunov Stability Theory. Rigorous analysis has shown that the train controlled by this method based ATO (Automatic Train Operation) system can effectively track the reference trajectory. Numerical simulation also verifies the effectiveness of this adaptive control algorithm.
Evaluating Flight Delays Rating Using Fuzzy Simulation Approach
Authors: Zhao Zhen Wu
Published: December 2012

This paper offers an assessment of flight delays rating, which deals with general concept of risk and safety. With the use of linguistic terms, subjective assessments of qualitative delays rating indexes are represented with fuzzy variable. The relative weights of rating attributes are assessed using a pairwise comparison process. Based on the concept of optimality, Fuzzy simulation approach is employed to dispose of the evaluation model and compute the expected values. Finally, an empirical study about a major domestic airline is conducted to demonstrate the effectiveness of the approach.
A Improved Bus Timetable Scheduling Model Using Quantum Genetic Algorithm Based on Penalty Strategy
Authors: Tang Xin Lai , Yang Shu Hong
Published: December 2012

Considering the influence that the cycles of signal lamp have on the waiting time, a bus scheduling model is presented in this paper based on the trade-off between the cost of bus operator and benefits of passengers. In order to handle with the low efficiency brought about by the refused strategy, a new fitness function is designed according to penalty strategy, and then traditional genetic algorithm is replaced by quantum genetic algorithm to accelerate the search of optimal parameters further. The results of experiment show that the presented method is effective.
Target Range and Velocity Measurement to Reduce False Targets in FMCW Automotive Anti-Collision Radar
Authors: Li Zhi Gang , Gu Qiong Chan
Published: December 2012

For frequency modulate continuous wave radar, it is necessary and difficult to search the pairs of beat frequencies in an up-chirp mode and a down-chirp mode t o measure range and velocity of multiple targets. However, the inherent problem of FMCW radar is multiple targets detection. False targets can appearance because of mistaking the combination of these beat frequencies. A novel waveform named double-slope symmetrical saw-tooth wave is proposed and its corresponding algorithm is also introduced to resolve the problem of multiple targets detection for automotive anti-collision radar. Computer simulation results and theoretical analysis prove that the method is effective and practical for multiple targets detection in intelligence transportation system.
The Planning of the Dynamic Path of the 3rd Party Logistics Center, which Based on the Ant Colony Optimization
Authors: Zhen Yue Ran , Huang Jia Cheng , Li Wen Yong , Li Fu Xiang , Zhang Yang
Published: December 2012

Logistics profits which is the third profit source, it has become a "black hole" of the profits of the entire supply chain. At all the logistics costs, the proportion of transport costs is approximately 35% to 60%, thus by through reducing transportation costs, can we improve the effectiveness of the logistics system, and finally to maximize profits. Dynamic path planning of third-party logistics centers undoubtedly reduces transportation costs and optimizes logistics management research priority. The article first introduces the TSP and VRP, both are classic path planning methods, and then through the basic idea and the basic principles of detailing the Ant colony optimization to illustrate the wide range of applications of it in third-party logistics.
Empirical Study on Influencing Factors of Sichuan Logistics Development Based on Grey Relation Degree Model
Authors: He Xue Feng , Jing Yue Wu
Published: December 2012

Logistics is the new economic growth point in the 21st century. For Sichuan province, it is significant to predict regional logistics demand and make reasonable regional logistics plan. In this paper the empirical analysis for influencing factors of Sichuan logistics development was made with grey relation degree model. According to the research results, some pertinent analysis and suggestions were presented. This research can provide the direction for Sichuan logistics industry development and theoretic guidance for the development of logistics companies in Sichuan.
Research of the Car Demand Forecasting Based on the Seasonal Index Correcting Smoothing Model
Authors: Kong Qin , Sun Wan Hua , Jiang Wei
Published: December 2012

The trend and seasonal factors was corrected in the Exponential smoothing model. Take T Company as an example to proposes seasonal index correction smoothing model prediction method and verifies its validity. The results provide reference for demand forecasting.
An Exploration into Green Land System and Unexpected Disaster Prevention in Mountain City: A Case Study of the Shapingba Downtown in Chongqing
Authors: Yan Bo , Chen Shun Bo , Deng Shu Yang
Published: December 2012

The fast urbanization is incurred with an increasing frequency and variety of sudden burst of disasters, especially in the mountain city. Its complex geographical environment restrains the population evacuation and the refuge; therefore, it is of great significance to explore into the disaster prevention in the mountain city. The green land system plays a positive role in urban disaster prevention and relief. With the analysis of deficiencies facing Shapingba district of Chongqing in the use of the greening system, plus theories of the green land system and the disaster prevention, the paper discusses how to improve the urban function of disaster prevention and relief via the green land system. To be specific, the green land system can be relied on to strengthen the urban system of disaster prevention; the network-shape green land system should be improved to form appropriate disaster prevention division and level; the route of disaster prevention and refuge is referenced to reasonably allocate the urban green land; the urban public green land is increased to enlarge the refuge area; many trees are planted to work as the isolating belt of disaster prevention.
The Space Buffer Analysis Based on Grid Algorithm
Authors: Xu Xu , Wang Pei Hua
Published: December 2012

Spatial analysis is the core of the space information system and the key function, and also one of evaluation a spatial information system function of the strength of the important index. Buffer analysis is the basic functions of spatial analysis on spatial information system, and is the basis of many space analysis methods. Buffer analysis is to point to identify a geographic entity or space objects on its surrounding of adjacent sex or the effect and in its built around a certain width of the strip area. In this paper, buffer area analysis of the spatial objects and grid theory are explained. On the basis of above, the establishment of grid algorithm of spatial buffer area and its shortage are also discussed. Finally, it makes exploration to the method application of the spatial buffer area analysis and the aspects of port logistics.
Researches on Support Capacity Building of Military Transportation on Basis of Multimodal Transport
Authors: Yang Xiao Song , Gong Zhi Ping , Wang Shuo , Ding Bao Cheng
Published: December 2012

As bridges and ties that interlink the system elements in modern military logistics, military transportation directly determines the orientation, flow rate and throughput of military supplies. The application of multimodal transport in military transportation will significantly improve the transportation performance, optimize the transportation structure and promote the reasonableness and cost efficiency in transportation. This paper carries out a SWOT(Superiority Weakness Opportunity Threats) analysis on development of multimodal transport in Chinese military transportation, builds the information flow and supply management mode for multimodal transport in military transportation, and proposes the requirements by multimodal transport on support capacity of transportation equipments.
The Analysis of Vulnerability in Low-Carbon Delivery System Using Analytical Hierarchy Process
Authors: Huang Yu Kai , Hsieh Cheng Hsien , Zhao Jia Min
Published: December 2012

Convenience stores in Taiwan have integrated e-commerce systems into their logistics systems to develop a new retail delivery model. Store-to-store delivery service is the one of the retail delivery systems served by FamilyMart.com and 7-11.com. The delivery system is complicated and risky. This paper are explores the structure of logistic for store-to-store delivery service for electronic commerce and develops a hierarchical framework and evaluation model to evaluate the logistics vulnerability of two store-to-store delivery service providers in Taiwan. With the results of the most vulnerable parts in store-to-store delivery system, managers could add resources and formulate strategies to strengthen them and reduce the frequency of the events that have higher failure probabilities.
Modification of Traffic Wave Theory and the Development of a New Stop-Wave Model
Authors: Jia Yu Han , Wu Jian Ping , Du Yi Man
Published: December 2012

This paper studies the traffic wave phenomenon on the basis of traffic flow theory and finds that the classical theory disagreeing with the real traffic state. The existing theory is modified and a new traffic wave model is proposed based on the improved theory. The aim of the model is to better describe the stop-wave phenomenon in signalized intersections at a microscopic level. Then the model is calibrated and validated by data obtained from an intersection during morning-peak period. Results show this new model can represent the characteristics of traffic wave with a high accuracy and can demonstrate the improved traffic wave theory.
A Study of Matching of Driver’s Ability with Task in Traffic System
Authors: Chen Bin , He Cao , Wang Jian Bo
Published: December 2012

On the basis of analyzing and abstraction of the relationships of all factors in road traffic system to driver’s personal ability and the requirements of systematic task, the states of driver’s personal ability and systematic task are researched. The safety level under different match states is revealed and the matching criterion for higher safety properties is provided through studying of the match level of driver’s personal ability and systematic task. In addition, the methods how to examine drive’s ability or system state.
Asymptotic Tracking Control of Freeway Traffic Density via Ramp Metering
Authors: Fan Xiao Hong , Ju Yong Feng
Published: December 2012

The method of the robust integral of the sign of the error was used to design the ramp signal for traffic flow system of freeway with uncertaines . Uncertain terms are allowed to be modelled or unmodelled.The unmodelled terms in the model were estimated by there bounded differential . Compared with other ramp metering method, this controller is designed without approximately linearizing the complicated nonlinear model and requiring the upper bound of unmodelled terms known .The control gain is reduced .The method is verified to be robust subject to both external disturbances and unmodelled dynamics ,and to be adaptive to unknown parameters . The numerical example shows good tracking performance .
Traffic Accident Detection of Optimal Sensor Placement Algorithms
Authors: Yang Mei , Wu Qi Sheng , Bai Lan , Wei Lan Xin , Li Bo , Gao Rong
Published: December 2012

Through analysis the impact of rapid urban road traffic accidents on traffic operations factors. We take the rapid road between the Chang'an Road Interchange and the Yanta Interchange sections as the research target; simulate the traffic incident through the TransModeler software. Propose the best sensor layout spacing, which can rapidly detect the traffic accident when an accident comes out and supply to the traffic management departments to deal with traffic accident, protect the urban freeway traffic flow.
Development Trend of High-Density Housing in China
Authors: Ning Qiao , Gao Hui , Chen Nan
Published: December 2012

In this paper, based on the introduction of the typical cases of foreign and domestic housing, it is indicated that China’s high-density housing should be improved in concepts, planning and construction. Compared with high-density housing in developed county from urban planning, floor plan and ecology measures it is stressed that we should focus on some energy-saving measures in the construction which adapt to the current condition of our country.
System Safety Analysis and Strategy Research on Truck Rear-End Accidents
Authors: Cao Qing Gui , Zhao Lu Hua , Gao Nai Xiu , Chen Ping
Published: December 2012

The paper is intended to analyze trucks rear-end accident by applying fishbone diagram and fault tree analysis methods and study the countermeasures. And applying fishbone diagram to analyze the cause of trucks rear-end collision accidents systematically and logically and classify the accidents cause. The paper drew the fault tree of trucks rear-end collision accidents, sought the way of controlling the accidents through least path-set of fault tree, and found the main factors that influence the truck traffic safety according to the result of structure importance level. According to the analysis of the fishbone diagram and fault tree results, the paper researched the preventive measures of truck traffic accidents, and draws up safety checklist to ensure the effective implementation of the measures.
Optimization of Signal Timing for the Mixed Traffic Flow in Vissim Simulation Environment
Authors: Qiao Jian Gang , Hu Pei , Yu Dan
Published: December 2012

In order to improve the capacity of urban roads and alleviate the intersections’ congestion, this paper analyses the characteristics of mixed traffic flow in China, considers non- motor vehicles’ impact to the intersections, uses definite number of conversion to convert non-motor vehicles to motor vehicles, and then recomposes the F-B signal timing formula based on the traditional F-B signal timing method. By an example and Vissim simulation, a reasonable conversion factor is computed, The recomposed F-B signal time formula can reduce the delay and improve the efficience of the intersections, providing a new idea to signal timing under the mixed traffic flow.
Research on Traffic Flow Redistribution Algorithm under the Traffic Accident
Authors: Zhu Yong Cun , Li Wen Yong , Zhang Yang , Wang Tao
Published: December 2012

To reduce traffic incident, it is imperative to take effective measures. This paper presents a dynamic route guidance method based on capacity constrained allocation method. Firstly, it analyzes the character of capacity constrained allocation method which takes into account the right of way and traffic load characteristics and used ant algorithms to optimize algorithm. Secondly, it integrates with multi-period continuous dynamic route guidance to realize the redistribution of road traffic flow . Finally, an example is took to prove that this manner can be a perfect solution to the road traffic evens on the impact of the road traffic flow.
Simulation Model of Passenger Transfer Behavior in Metro Station
Authors: Zhang Qi , Han Bao Ming
Published: December 2012

A cellular automata based model was presented for the simulation of passenger transfer behavior in metro stations. Microscopic simulation experiments of passenger behaviors ran under typical scenarios to study the effects of passenger number and train connection on transfer efficiency. The results show that tansfer distance and transfer facility capacity have regular effect on transfer time with fluctuation of passenger numbers. And train connection effects on transfer time with the influence of transfer distances. Therefore, sensitivity of transfer time was put forth as an indicator of coordination of passenger flow, facility attribute and train connection. Passenger flow sensitivity coefficient and connection sensitivity coefficient were defined as quantitative indicators to evaluate transfer coordination which was once difficult to quantify. Case study shows that the indicators reflect coordination level of transfer station effectively.
Study on the Secondary Starting Model Used in a Large Y-Shaped Intersection
Authors: Guo Jian Gang , Qiu Mei Hua , Chen Bi Tai
Published: December 2012

Abstract. A large Y-shaped Intersection usually has the triangular island inside. In order to improve the traffic capacity of the intersection without demolishing the triangular island, a large Y-shaped intersection secondary starting model was established based on a typical example, which also includes the relevant outcomes of the intersection signal design. By comparing the improved design to the original design via VISSIM, it seems that the proposed model in this paper achieved a favorable testing result as expected.
Safeguard System of Henggang Depot and Cover Property of Shenzhen Metro
Authors: Liu Ka Ding , Cao Jing , Hu Jiang
Published: December 2012

In recent years, urban rail transit construction asks for the safety of project with strict requests, because of its difficulty, high risk and complexity characteristics. Henggang metro depot possess double using garage , DC1500 contact rail system, and cover property on the top of the garage, thus it will face greater challenge in safety management. According to above characteristics, this research puts forward the system security goals, principles, and establishes a set of safeguard system, which includes three aspects: the legal laws and regulations, the organization construction, and the technical method. The safeguard system will play an important and guiding role in government standard formation and metro-property development mode promotion in other cities.
The Analysis of Urban Residential Activities Based on Taxi GPS Data
Authors: Li Chen
Published: December 2012

Taxi GPS data is collected to draw a scatter plot, and the city is divided into six traffic areas according to density distribution. It is inferred according to the traffic area distribution of where passengers get on and get off taxis each time that District 1 and 2 are central business districts, District 3 is for living and District 4 is for work. Daily activities of residents are mainly activities in the internal areas of the traffic areas, less cross-area activities. Office workers mainly commute between living areas and working areas and mainly focus on activities inside the traffic areas for the rest of the time.
Taxi Operation and Management System Based on Distributed Only Taxi Stations Solving Strategy
Authors: Zhao Lin , Xing Jian Ping
Published: December 2012

A new taxi operation and management system which is based on distributed only taxi stations solving strategies was proposed. This system has four major parts, including only taxi stations (OTSs), car GPS, mobile phone client/web site and scheduling center. This system abandons traditional street-sweeping mode to search passengers who want to take taxi and builds OTSs for taxi drivers to park. Passengers get no-load taxis information through telephone or web site, and choose one way to achieve trip purpose, such as they can go to the OTSs to take a taxi or contact with no-load taxi driver directly. This system can solve the problem of high no-load rate, fundamentally, which is caused by the information barrier between taxi drivers and taxi passengers. And what’s more, this strategy can also solve other problems, including energy saving, urban traffic jam reducing, and air pollution decreasing.
Research on the Exterior Public Space of Ecological Immigrant Settlements in Xilin Gol – Chaogewenduer Gacha as the Model
Authors: Zhang Min , Wang Juan , Ma Ming , Wang Wen Ming , Su Hao
Published: December 2012

The article chose the exterior public space of the Chaogewenduer Gacha as the main subject investigated in Xilin Gol, through analyzed the current situations of the Gacha’s exterior public space in detail, found out the existent problems such as lack of the public spaces, unreasonable exterior space scales, lack of the exterior space joints and lack of the green spaces, in the last, put forward reasonable reconstruction suggestions.
Integration of Public Transport and Bus Rapid Transit System
Authors: Wang Dou Wei , Zhu Xiao Ning , Wu Hong Yang
Published: December 2012

Along with the acceleration of city-urbanization and industrialization process of the cities, city traffic demand increases rapidly. This provides a good development opportunity for the urban traffic and also brings new challenges for the urban traffic at the same time. In addition, the demands for the public transport service quality are becoming more and more strictly for the growth of residents’ travel and the improvement of life quality, the problems in the public transport system have become the main aspects that restrict the development of the urban public transport system. So the advantages of BRT in the optimization of the network are becoming more and more significant.