bluuebunny/crossref_metadata_2025 huggingface dataset:
Early Quality Implementation Capacity Evaluation
Authors: Zheng Chao Yu , Yi Chao Jue
Published: September 2013

With the developing of government supervision system, capacity to implement construction project quality evaluation is presented to ensure the project quality. Before construction, a comprehensive evaluation on the overall could help to get a comprehensive understanding of the main sectors of construction, which is an effective measure of government supervision system. This paper introduces the construction of the project evaluation system of implementation capacity before construction, detailing evaluation method, applying the method with an example.
An Improved Iterative Method of Saturated-Unsaturated Unsteady Seepage Numerical Simulation
Authors: Liu Yang , Hu Zhi Gen
Published: September 2013

The original iterative method of the saturated-unsaturated unsteady seepage FEM analysis is presented. According to the character of the iterative process, an iterative coefficient is introduced, and a new method is formed. The improved iterative method can enhance and accelerate convergence of the computation efficiently by selecting suitable , and make the saturated-unsaturated unsteady seepage FEM analysis have broader engineering applicability. Three-dimensional FEM analysis program for saturated-unsaturated unsteady seepage is compiled based on the improved algorithm. The algorithm is validated by an analysis example.
The Experimental Research of Slurry Improvement with Different Kinds of Vertical Drains under New Vacuum Conditions
Authors: Chen Jian , Tang Qiao Liang , Liu Shi Jing
Published: September 2013

The results of experimental research are presented and discussed with focus on the ground improvement effect of slurry with different kinds of vertical drains under new vacuum conditions. In these conditions, horizontal sand cushion, which is requested in regular vacuum preloading method, is cancelled. Vertical drains are connected with sealed pipes, so the vacuum head can be transmitted into vertical drains without decreasing. For the experimental research, slurry taken from reclaimed soil zone is placed into six model casing boxes. Different kinds of vertical drains (prefabricated vertical drains (PVDs) and sand drains) are installed into the soil with different spacing (0.4 m and 0.8 m). A vacuum pressure of 80 kPa was applied continuously for 90 days. The effect of filter type of PVD, type of vertical drain and drain spacing under new vacuum preloading condition to slurry soil improvement is examined. Test results show that this new vacuum preloading condition can transmit vacuum head into vertical drains efficiently and the effect of drain filter to slurry improvement is affected by the drain spacing.
Stress and Deformation Characteristics of Rock-Fill Dam with Asphalt Concrete Core Wall Founded on Deep Overburden
Authors: Chu Fu Yong , Zhu Jun Gao
Published: September 2013

Abstract: The stress and deformation of rock-fill dam with asphalt concrete core wall founded on deep overburden is calculated and analyzed by Duncan E-ν model and double-yield-surface model through three-dimensional finite element method. The stress and deformation of dams in water storage period is compared by the two models, the results show that the deformation distribution of dam core via two different models are coincide one another. The horizontal displacement and vertical displacement of rock-fill dam with asphalt concrete core wall by double-yield-surface model is smaller than which by Duncan E-ν model in the period of water storage. Furthermore, the horizontal displacement and vertical displacement by double-yield-surface model, which are close to the practical test data through the deformation via two models are in good agreement. The analysis of core-wall stress via double-yield-surface model is more reasonable than the Duncan E-ν model. The analysis result of resisting hydraulic fracturing of core dams by DuncanE-ν model is coincide which of core dams by double-yield-surface model.
Summary on Research Advances on the Reservoir Bank Instability
Authors: Zhang Zu Lian , Huang Ying
Published: September 2013

The reservoir bank instability is the outcome combined the action of the external factors with the action of the internal factors. The limit equilibrium analysis, the strength reduction finite element method, the saturated/unsaturated seepage coupling and so on were applied to analyze the reservoir bank stability. The condition analogy graphical solution methods, the mathematical analysis method, the balanced cross-section method and so on were applied to forecast the reservoir bank stability. The reservoir bank instability mechanism depends on the physical action, the chemical action and the mechanical action of the water in the reservoir bank rock and soil. At present, the drainage measure, the cutting slope and reducing load measure, the retaining and supporting measure , the anti-slide piles measure and so on have been widely used to control the reservoir banks instability. Aiming at the research status of the reservoir bank instability, the problems in study and the suggestions for future work are pointed out in this paper.
Study on Creep and Fracturing of High Antidip Sandwich Rock Slope in High In Situ Stress
Authors: Wu Qi , Deng Xu Biao
Published: September 2013

The paper set an example of high antidip sandwich rock slope to study its creep and fracturing deformation in high in-situ stresses at Jinping First Stage Hydropower Station in China. The slope creep deformation before and after excavation could be found on slope face and in exploration adits. Displacements at 4 monitoring points on the slope were abnormal for influences of fault f42-9, zone SL44-1 and lamprophyre dike, which indicate creep and fracturing of the big block separated by them. Through stereographic projection analysis, intersection of controlling structural planes of the big block direct outside the slope. Its bottom slide face, fault f42-9, has internal friction angle smaller than depression angle of the intersection line. Barricade in front of the big block removed by slope excavation decreased resistance to slope slide. It is concluded that creep and fracturing deformation of the big block is controlling stability of the slope.
The Tests on the Lime-Treated Expansive Soils Compaction Characteristics
Authors: Wang Xin Zhong , Liu Rui , Peng Shu Jun
Published: September 2013

The compaction characteristics of the lime-treated expansive soils from the planning airport in China's Ankang were studied through the heavy compaction tests. The results show that all these elements such as lime content, water content, soil height, wetting time have a certain effect on dry density. As the lime quality ratio increases, the optimum water content under heavy compacting standard of improved soils increases but the maximum dry density decreases. With the increase of lime content, the effect of water content on dry density decreases while the water content near to its optimum value. Soils with the lower height have higher dry density when compaction energy, lime content and water content unchanged. As the wetting time increases, the maximum dry density shows a decreasing tendency until after 48 h it remained stable. It indicates that with the same lime content the order of primary factors influence on dry density are water content, wetting time, soil height. Finally, the lime stabilizing principle to expansive soil is explained through by applying scanning electron microscope technique.
Formation Mechanism Analysis of Cataclastic Texture Rock Landslide Based on Discrete Element Method
Authors: Zeng Bin , Zhou Hong
Published: September 2013

Since a long time of excavation, the slope in Yang-mountain of Suzhou Province became a high and steep slope which has 260m difference in height, on top of this slope there is a high risky cataclastic texture bedrock landslide. Based on geologic investigation of the landslide, combined with 3DEC numerical simulation, the paper gave a comprehensive analysis on formation precondition, evolution procedure, failure model and mechanism from the points of topographic feature, structure evolution history, lithology and external influence. It is shown that the free face in front of the landslide, weak quartz porphyry dike in front of the sliding zone, cataclastic rock structure formed by nappe structure are the main factors which control the formation and failure mode of the landslide.
The Hydrogeological Feature and Geological Hazard Prevention of M Coal Mine in Xinjiang Fukang
Authors: Yao Chun Hui , Yao Qiu Hui
Published: September 2013

M coal mine is located in the hilly terrain of mountain front in the southern margin of Junggar Basin in Fukang. The geological structure belongs to a medium type in the mine area where there are surface faults (two larger faults) and structural developments. The stratigraphic dips of south limb of Fukang syncline and southern Fukang anticline are large while that near F5 fault of anticline axis are larger and even upright. Brittle rocks develop fractures. In consideration of meteorology, earthquakes and other factors, mining may lead to such geological hazards as eboulement and surface subsidence, which should be highlighted.
Numerical Study on the Bearing Capacity of Composite Foundation with Pile-Soil Shear Modulus
Authors: Li Wei Zhou
Published: September 2013

Numerical simulation model was established with FLAC3D to calculate the bearing capacity and the settlement of composite foundation with different pile-soil shear modulus. Then the rules of the effect of pile-soil shear modulus upon mixed pile composite foundation have been obtained. The results show that there is a great relationship between the pile-soil shear modulus and the bearing capacity of mixed pile composite foundation. Along with the increase of pile-soil shear modulus, the bearing capacity increase. Also, this paper suggest that the right value of pile-soil shear modulus of mixed pile composite foundation solidified by HEC or HAS consolidator dosing 12%, which can be used for the design of mixed pile composite foundation.
Predicting of Permeability Coefficient for Compacted Clay
Authors: Ran Dong Qin , Zhang Ji Ru
Published: September 2013

Permeability coefficients of three compacted clay samples are measured by using Transient Water Release and Imbitions Method which is shortly named as TRIM. The curve between permeability coefficient and suction is obtained, the results of tests show that the permeability coefficient decreases in nonlinear trend along with the increasing of suction. Based on Brooks Corey model and Mualem model which is shortly named as BCM model, an analytical method is put forward to calculate the permeability coefficient of compacted clay. The results of using BCM model and TRIM are compared, which show that the permeability coefficient obtained with two kinds of methods match well when the suction is greater than the inlet value.
Study on Failure Mechanism and Stability of Loess Slope in Huangshui River Basin
Authors: Zhou Bao , Zhang Yu Xin , Sun Ying , Gan Cheng Ping
Published: September 2013

This paper shows the result of the research on the stability of loess high slopes with 30m and 80m in Huangshui River basin. The investigations carried out the numerical simulations of the slope stability based on the drilling and sequence sampling test in a typical loess stratum of the survey region. The result shows that the mechanisms of fracture related to the gradients of slopes are different and the limit equilibrium angles of slopes are 60° and 37° respectively.
A Modified Pall-Typed Friction Damper for Vibration Control in Series Compensation Platform Structure
Authors: Wei Wen Hui , Gan Lai , Hu Meng Fei , Wang Jian
Published: September 2013

Based on the characteristics of series compensation platform structure, a method of installing modified Pall-typed friction dampers for seismic passive control was proposed. Compared with the conventional , the modified Pall-typed friction damper has the same effect on energy dissipation, and it is superior in imposing pretension at both ends and saving friction materials. The equations of relation between brace displacement and internal force of the modified Pall-typed friction damper were derived. Besides, the time-history analysis method for seismic responses of series compensation platform structures with modified Pall-typed friction dampers was established, and a sine amplitude-modulation wave train was applied to analyzing the dynamic responses of these structures. The results show that, the displacement of the series compensation platform structures with modified Pall-typed friction dampers decrease to some extent. The seismic control is effective.
Modelling the Geometric Structure of Concrete Work Item Processing
Authors: Rajczyk Jarosław
Published: September 2013

This article presents a method of work tool modelling for machines for surfacing concrete in the form of a disc which has variable geometric friction elements. The method, based on the effectiveness criterion of the elementary interaction surface friction describes the impact of the disc material.
Analysis of Cold-Formed Steel Lipped Channel Columns with Complex Edge Stiffeners and Web Holes
Authors: Wang Chun Gang , Cao Yu Fei , Jia Lian Guang , Liu Hong
Published: September 2013

This paper presents finite element analysis on cold-formed steel-section columns with complex edge stiffeners and web holes under axial compression. A total of 18 channel models with different parameters such as length, thickness and flange width are simulated. Failure modes, the ultimate load and the stress distribution around web holes are researched. The analysis results show that, the main failure mode of-section columns with complex edge stiffeners and web holes is distortional buckling. The carrying efficiency is higher as the thickness-width ratio increasing. Because of perforations on the web, the position of the max stress changes from the web near the mid-height of the specimens to the location adjacent to holes.
Influence Factors of Compressive Performance of Composite Foam Sandwich Tube
Authors: Li Feng , Xu Kang , Wang Yan Na , Wang Jian Ping
Published: September 2013

Composite foam sandwich tube, which is a sandwich structure, improves stability of the tube and strength for use compared with single-layer composite, and is available in civil engineering as bearing member of light weight, high strength, and corrosion resistance. Axial compression experiment was made for fiber reinforced resin matrix composite foam sandwich tube which is laid in 5 different ways, and the comparing analysis on damage models was made according to experimental phenomenon. The laws of influence is preliminarily recognized by analyzing influence to foam sandwich tube of fiber laying, modulus of fiber, three dimensional elastic modulus ratio, tube radius, tube thickness.
Shaking Table Test of RC Frame-Shear Wall Structures with Partial Columns Sliding at Upper Ends
Authors: Lu Wen Long , Shen Chao Yong
Published: September 2013

A new kind of RC frame-shear wall structures with partial columns sliding at upper ends is proposed in this paper. A shaking table test of this new kind of structure model (Model B) and a conventional frame shear-wall structure Model (Model A) were carried out, and the plan layout and the member size of the two models are nearly identical. The two models are 3-story and 2-bay by 2-bay, and the second story of either structure is weak story. The test results showed that: (1) under the same intense earthquake, the damage of Model B is slighter than that of Model A; and (2) under the same intense earthquake, the interstory drift angle, the acceleration and the shear force of weak story of Model B are reduced remarkably in comparison to Model A.
Progress in the Research of Steel Structures Strengthened with CFRP
Authors: Zhang Xing Qiang , Yao Jian
Published: September 2013

With perfect mechanical property and excellent resistance to corrosion and environment degradation, Carbon fiber reinforced composite is widely used in the strengthening of metallic structures. It can improve the static behavior of steel beam, prolong fatigue life. This paper summarizes the following areas that have received many researches: the increase of moment carrying capacity, the distribution of interfacial stress, the extending of the fatigue life of structural steel elements, which can be useful for the engineering application or further researches.
Analysis the Bearing Force Characteristic of the New Cast-in-Place Concrete Pile with Half-Screwed
Authors: Li Xiu Hua , Cong Wei Min , Yue Chen Xi , Chen Ya Dong
Published: September 2013

Half-screwed pile is a new kind of pile. Because of the unique design of variable cross-section, bearing principle and working traits are much more complex than the traditional linear pile. The vertical load transmission mechanism thoroughly is analyzed about half-screwed pile based on the static load experiment results. Researching its work performance, load transfer mechanism, the force mode, has important theoretical and practical significance.
The Application of Digital Cameras in Monitoring Dynamic Deformation of Steel Shelf
Authors: Yu Cheng Xin , Ding Xin Hua , Chen Ming Zhi , Xiao Peng
Published: September 2013

Steel shelves are widely used in logistics and warehousing, however, steel shelves often occur instability and other accidents in applications. Many of the destruction are instantaneous. [ Therefore, how to timely monitor the deformation of the shelf, especially the deformation of the shelves on the dynamic stress in the moment to ensure the safe of the shelves is very important. This article describes the method of using digital cameras to monitor dynamic and instantaneous deformation of shelf, which has the characteristics that easy to use, high accuracy, rapid reaction, and observing multi-point once, all-weather use, does not affect the normal work.
Finite Element Analysis on Integral Structure of Light Steel Temporary Buildings
Authors: Cai Xue Feng , Zhang Zheng , Ma Yong Chao , Zhou Ji Zhong
Published: September 2013

Light steel temporary building is commonly used in the construction site, with advantages on simple structure, repeat used and small deadweight. There are still not enough researches and relevant standards to conduct the design and construction of the buildings. In order to precede to theoretical study on integral structure of light steel temporary buildings a method which used to set up finite element analysis model about integral structure of light steel temporary buildings was proposed in this paper. The method is based on finite element analysis software, Ansys. Using this method a monolayer integral structure, a two-story integral structure and a trilaminar integral structure model were set up. Lateral displacement under design load of the integral structure was solved out by these finite element models.
China's Streets Lighting Environment Impact Factors Analysis
Authors: Su Xiao Ming , Zhang Ming Yu , Hao Zhan Guo
Published: September 2013

This paper proposed a new method of describing street glare. Glare is a typical light environment, it is affected by streetlights and street surface conditions. It impact on street safety. This paper based on survey of Tianjin, Changsha, Zhengzhou street area, included optical lights types, height of light bulbs, distance between tow lights, street surface brightness, illumination and other factors examination and record. Survey date had been used to set 36 street lighting simulated models and compare with the calculation. The output for the analysis is a series of maps reflecting the relationship between street glare environment and its factors. The case study proved that street lighting environment is closely associated with streetlights bulbs brightness and its installation site. The results show that high level of light brightness will lead to high level of glare and higher light bulbs will increase glare.
The Flow of Logistics Information Service Platform for Industrial Clusters Modeling Based on IDEF
Authors: Zhang Bin , Zhao Wei Yang
Published: September 2013

The functional architecture of logistics information service platform for industrial clusters is designed based on the target service objects in the paper. According to the principle of top-down and decomposing step by step, the paper establishes the logistics flow model of the information platform by the method of IDEF0,including business,contract/order process, logistics resource delivery, logistics resource return, settlement and credit evalution.
The Forecast of Transportation Flows under Certain and Uncertain Trends: The Application of Combined Grey System Models
Authors: Zheng Jian Hu
Published: September 2013

The complexity of modern economic system makes the forecast about correlated variable more difficult. Combined grey system models with general grey forecasting method and grey verhulst forecasting method are utilized to overcome the forecast issues under certain and uncertain changing trends. The results indicate that the forecast accuracy is high and short-term forecasts are available, which supports the methodological applicability and robustness.
Identify Safety Climate Factors of Express Items Based on Factor Analysis
Authors: Hu Biao , Feng Hui Ying , Zhang Xiao Yu
Published: September 2013

Take safety climate for express items security, identify express items security problems from the perspective of frontline staff and propose the improvement measures,it will maybe help the managers deal with express items security problems better.
Design of Traffic Organization Refer to Variable Lanes at the Intersection
Authors: Jia Gui Bin , Yuan Zhen Zhou , Li Yun Han
Published: September 2013

In the process of Variable lane change, there is a great influence on the intersection of the road organization, which is prone to have accidents. In order to overcome the shortcomings of the traditional solutions for variable lane change, we create a new system that improve the efficiency of Intersection as the purpose and innovatively design a variable lane-change system that adapted to tidal traffic. Thus, we can realize the automated linkage to control lane change; the system has a relatively strong adaptability and scalability.
Influence of Roundabout Inscribed Circle Diameter to the Traffic Safety
Authors: Mahdalova Ivana , Krivda Vladislav , Skvain Vaclav
Published: September 2013

The article presents an interesting result of research aimed on traffic safety of roundabouts. The relationship between the inscribed circle diameter of roundabout and the crash rate in the roundabout is presented. There is a certain optimal size of roundabout inscribed circle diameter identified for safe operation.
Evacuation Time of the Facilities in Rail Transit Study and Simulation
Authors: Li Zhi Juan
Published: September 2013

Urban rail transit is one of the important transportation means. Passenger evacuation capacity of subway station is importance for rail operation safety. This article studied the time variation about different numbers of evacuated people under the different stairs width. And it forced on the variation of the evacuation time under different stair widths. By considering the mutual repulsion between pedestrian and wall, and among pedestrians, the article used the anylogic simulation software to simulate and got the evacuation time under different stair-width. When down-stair width is beyond by 3.5m, down-stair-width increasing is unobvious to shorten the evacuation time. Finally, the article explains differences between two results by comparing analysis of simulation results and calculation results.
Research of Pedestrian Streets Space and Human Activities — A Pedestrian Street in Changsha as an Example
Authors: Zhu Shu Guo , Chen Hong Yu
Published: September 2013

Taking human behavior into account is the key to turn pedestrian street from the tree into a semi-network, its the location of urban vitality also. The study takes Changsha Walking Street as an example, deliberated the walking system and human behavior and activities, analysis their pros and cons with examples, and made appropriate recommendations for improvement.
The Establishment of Restraining Factors System in the Development of Public Bicycle
Authors: Yang Ye , Yuan Zhen Zhou
Published: September 2013

The paper analyzes and summarizes the factors which restrict the development of public bicycle. And then, through analyzing the interaction relationships of factors a network which reflects the complex intersection relationship between the restraining factors is established. Based on ISM (Interpretative Structural Modeling) method, a hierarchical structure model of restraining factors of public bicycle sharing system in which the complex interaction relationships are divided hierarchically is established. It can guide scientific operation of the public bicycle sharing system.
Proposals of AHP-Type of Disaggregate Logit Model and Improved AHP Model in Modal Choice
Authors: Kajita Yoshitaka
Published: September 2013

This paper aims at constructing an improved model of modal choice by the use of both of AHP model and disaggregate logit model. Firstly, using AHP structure model, the importance of various factors in modal choice is investigated, and relevant choosing consciousness is scored. Secondly, a disaggregate logit model for modal choice with AHP scores and physical factors is proposed. Thirdly, weights of items in AHP model for modal choice are reversibly estimated by the use of the proposed AHP-type of disaggregate logit model. Direct AHP model, AHP-type of disaggregate logit model and improved AHP model are also compared each other.
Evaluation Framework Design of Highway Traffic Safety Maintenance
Authors: Zhu Sheng Xue , Yu Min
Published: September 2013

Based on the analysis of differences between traditional highway maintenance and traffic safety maintenance, the essay defines the highway traffic safety maintenance concept and connotation from the needs of highway traffic safety maintenance. The index system of highway traffic safety maintenance evaluation, which provides the theory and method for highway traffic safety maintenance evaluation work, was established from five aspects, namely, subgrade and pavement, safety facilities, management facilities, intersection and greening.
Method of Traffic Zone Division Based on Trip Distance
Authors: Wu Shi Mei , Cheng Guo Zhu , Pei Yu Long
Published: September 2013

Aiming at calculation of traffic zone radius, probability density and probability distribution of trip distance were analyzed. Inner trip proportion, traffic zone radius, trip distance, space between traffic zone center and trip generator, probability of trip distance were defined as P, R, D, S and f(D) respectively. According to the relationship between D and R, three conditions were considered, i.e. D≤R, R2R. Two models among and P and R, D, S, f(D) were established under the condition of D≤R, R2R. The calculating method and procedures of the traffic zone radius based on trip distance were put forward.
Characteristic Parameters Identification of Macro Traffic Flow on Urban Expressway
Authors: Chen Da Shan
Published: September 2013

The macroscopic traffic flow parameters characteristic is an important research content in traffic flow theory. Urban expressway plays an important role in the urban road network. It is gradually shifting from large-scale infrastructure-oriented to refinement of traffic management. With the growing of traffic demand and much more traffic congestion and accidents, integrated active traffic management should be involved in urban expressway management on the back ground of car-road coordination. As the backbone road network, traffic flow characteristic parameters have great value for the control and management of urban expressway. Then the characteristic variables of the expressway traffic flow were identified which support meticulous management for urban expressway.
Research on the Flight Delay Model and Calculation of the Airport`s Punctuality Rate
Authors: Sun Xie Sheng , Zhang Xin , Han Ji Fu
Published: September 2013

With the rapid development of Chinese economy, flight delay happen frequently in many airports. Now, there is an error point in China civil aviation system that is they are all seem to hope expansion airspace to enhance capacity to solving this problem. But in fact, airline company`s service confusion leading to the airspace`s low-effective using is the major cause of delay. Only the more effective using of the existing airspace, the more benefit. This paper analyses the reasons of flight delay, explores the relation of flight delay and air traffic movements mainly, uses the analytical model to calculate the China three major airports ` punctuality rate under the condition of service level reaching the international level, which is higher than the actual data. The result shows that the service quality is the leading cause of influencing punctuality rate. Only improving the service standard, Chinese airports` flight delay can be solved effectively.
The Substitutability Model of Transport Demand and the Share Ratio Analysis of Passenger Transport Products
Authors: You Yan Wen , Jia Jun Fang , Wu Jun Gang
Published: September 2013

With the building and operating of passenger line, the competition of integrated traffic system in region and avenue not only consists among all kinds of transportation modes, it embodies among various kinds of passenger transport products (PTP) between the existing line and passenger line. Keep up market-oriented principle, start with analysis of passenger travelling demand and use the qualitative and quantitative analysis to predict the share ratio of PTP rationally under the research of the substitutability of passenger transport demand (PTD) based on the theory of set pair analysis and generalized cost, and make the market orientation clear that plays an important role in promoting the division of work among existing line and passenger line, avoiding resource-wasting of infrastructure, and making the maximize benefits of the railway transport enterprises under the conditions of the market demand.
Application of Interval Multiple Attribute Decision-Making Method to Standard Instrument Departure Procedure Design' Scheme
Authors: Ken Chen
Published: September 2013

The optimal selection of the standard instrument departure procedure design (SIDPD) scheme is directly related to flight safety, air traffic flow management, and efficient use of airspace of aerodrome. In practice, the selection of the SIDPDs scheme is usually based on experts knowledge and experience in order to determine the optimal solution, which has the subjectivity and arbitrariness defects. In this paper, we comprehensively study the influence factors of standard instrument departure procedure design (SIDPD) scheme and establish an optimal evaluation index system. In addition, through applying relative membership degree rule, we build an evaluation model for optimization of SIDPD based on the evaluation of each index in the form of interval number. At the end of this paper, we show the effectiveness and feasibility of this model through an example.
The Economy Analysis of Sailing in the Arctic Northeast Passage
Authors: Song Yan Ping , Zhang Ai Feng
Published: September 2013

As the global temperature warming, the ice zone of Arctic is shrinking gradually. In summer, the waterway that can be used to sail has appeared in arctic waters. Based on the analysis of ice condition of the Northeast Passage, the cost accounting of ice enhanced vessel and the cost accounting of voyage cost, this paper comprehensively analyzes the required freight rate (RFR) of sailing. By comparing the Suez Canal routes with the Northeast Passage routes, an analysis for the sailing economy of the arctic Northeast Passage can be given.
Emergency Rescue Resource Dispatch of Expressway Based on Potential Accidents and GA: Case Study of Henan, China
Authors: Pu Ju Yi , Guo Xiu Cheng , Chai Gan , Zhu Cang Hui
Published: September 2013

Emergency rescue dispatch is not only influenced by current accidents but also influenced by potential accidents, which are caused by current accidents. In this paper, emergency rescue process is introduced in detail to cognize rescue stages, rescue components and rescue resource. According to relationship of rescue sites and dispatch cost, dispatch paradox of potential accidents is elaborated to show that potential accidents have significant impact upon emergency rescue dispatch. In order to minimize the overall dispatch cost, emergency rescue resource dispatch model of expressway is established based on opportunity cost model, improved scene decomposition algorithm and genetic algorithm (GA) with regard to potential accidents. Considering different rescue resource, dispatch schemes for optimization results are analyzed through case study of Henan expressway, China. Results indicate that these methods could accord with practical dispatch operation for emergency rescue process and emerge good effect.
Research on Bus Dispatching Method Based on Goal Programming
Authors: Zhang Chun Mei , Zhai Lu Lu
Published: September 2013

Bus schedules are important components of urban traffic. Designing a good bus schedule is of great importance for improving urban traffic environment, ameliorating the public condition, and improving the economic and social benefits of public transport company. We proposed the method of operational research based on goal programming, which through a specific operation is given. Both theoretical sense and practical application are of this article.
The Toll Free Expressway Policy for Part of Vehicles on Major Holidays Choice of Compensation Basis
Authors: Shen Shu Li , Zhao Guo Jie
Published: September 2013

In 2012, for the first time China implemented the toll free expressway policy for part of vehicles on major holidays. However, there is no universal compensation mechanism thereafter. How to choose the compensation basis is the core issue of establishing such a mechanism. A proper solution is to choose suitable data of listed expressway companies as the basis. Factors including corporate social responsibility and compensation theory being taken into account, listed companies with an over 95% ratio of toll operations are sifted out, and part of companies with low efficiency are wiped out by DEA Models. 5 listed companies stand out from data sieving on Annual Reports 2012. Data can serve as the compensation basis of the year.
Research on Second Ring Expressway Traffic Congestion in Beijing
Authors: Mao He , Xu Xiu Hua
Published: September 2013

According to the urban expressway traffic congestion of Beijing, from the perspective of traffic flow, the study makes a calculation and analysis on road network congestion rate, load of road network and traffic operation index. Training the traffic congestion and load of road network by using the BP neutral network in MATLAB, and put forward some countermeasures to solve the problem of traffic congestion. Through analyzing the load of different section and congestion rate, we can obtain the spatial distribution of the traffic flow and grasp the overall traffic on the Ring Road running load, develop appropriate management control programs for traffic managers, provide service and travel mode for travelers at the same time, so that balance the overall network load tends.
Prediction Method for Freeway Wheelpath Distribution
Authors: Cui Hong Jun , Xing Xiao Gao , Liang Guo Feng , Li Ya Ping
Published: September 2013

According to the analysis of distributing characteristics which obtained by the investigation of different types vehicles of many freeways, the law is discovered that distributing characteristics of same types of vehicles are similar on different freeways, using test to certificate that distributions of same types of vehicles are submitted to identical normal distribution, and the rationality of this phenomenon is discussed with statistical point of view. Calculated and predicted method of wheelpath distribution and axle load distribution are established that based on traffic flow. In the end, an example is used to confirm the accuracy of this method by contrasting the survey result and the predicted result.
The Optimal Unit Green Extension — Considering Different Demand Patterns
Authors: Cai Jun , Liu Hui Yuan , Zhang Li Hui , Wang Zhong
Published: September 2013

Actuated signals are able to adjust phase intervals in a real-time manner, in response to the traffic conditions obtained from vehicle detectors. These adjustments are implemented through a set of pre-determined controller parameters, including the unit green extension. This paper develops a model based on cell transmission model (CTM) to optimize the unit green extension, explicitly considering the stochastic demand arrivals, which, from a disaggregated view, imposes significant impact on individual vehicle delay and thus influences the overall system performance. The vehicle actuation logic is mathematically formulated as a system of equalities and inequalities. Genetic algorithm is employed to solve the resulted mixed-integer problem and numerical examples are presented to generate optimal unit green extensions under various demand patterns.
Fatigue-Related Traffic Accidents in Heilongjiang Province
Authors: Pei Yu Long , Wang Lian Zhen
Published: September 2013

‘Fatigue-related traffic accidents’ refers to a crash caused by drivers’ falling asleep during driving. Unlike drunk driving or overspeed, driver fatigue is affected by many factors. To identify the contributory factors affecting the occurrence of fatigue-related accidents, a case-control study was conducted. The traffic data used in the study was obtained from Heilongjiang Provincial Department of Public Security Traffic Administrative Bureau Data System. Accidents (N=58131) occurring during the 3-year period 2006/2008 were researched, and the data of fatigue-related accidents was extracted. Potential risk factors such as human, environment and road were examined using stepwise logistic regression method. Drivers’ age and gender, driving year, road pavement type and alignment, terrain, time of the accident and streetlight condition are significant factors impacting the occurrence of fatigue-related accidents. Besides, frontal impact, rear-end collision and bump fixation matter are the most common accident types in all of fatigue-related accidents. Identifying the high risk factors of fatigue-related accidents helps reduce driver fatigue and make available control measures.
Dynamic Planning Model for Port Iorn Ore Inventory
Authors: Xu Gui Bin , Zhao Xu , Li Xue Ting
Published: September 2013

Port inventory is a very important part in iron ore supply chain. Through the inventory management, we can get the best inventory strategy to minimize the total inventory cost. The inventory management of the port iron ore can get a reasonable and feasible inventory management strategy through the dynamic planning model.
Status Analysis of Building Construction and Demolition Waste Treatment/Disposal and Management in China
Authors: Zhang Hui Juan , Zhang Jing Jing , Chen Sha
Published: September 2013

China is experiencing a large scale of building construction, attracting great attention paid to debris generated by frequent construction and demolition activities for its cost inefficiency and environmental pollution. It is of great importance to better understand the magnitude and composition of the waste stream when developing rules, policies and strategies to manage this segment of the solid waste. In this study, after clarifying the definition of construction and demolition (C&D) waste according to its complex composition and diverse sources, approaches quantifying C&D waste to meet different requirements were summarized, and a simple weight-per-construction-area was employed to make an approximate estimation. Based on the main causes and status quo of C&D waste management, measures to reduce C&D waste were proposed to realize a sustainable construction industry, which include improving environmental awareness, strengthening the establishment of policy system and company waste management system, and reinforcing research and study work. This study also adds to the knowledge on research trend of C&D waste in China.
Simulation Analysis of Influences of Anti-Roll Torsion Bar on Vehicle Dynamics
Authors: He Zhuo Yu
Published: September 2013

In the secondary suspension of urban rail vehicles and high-speed passenger trains, combination of air springs and anti-roll torsion bar is widely used. However, in its practical use, cracks appear in the anti-roll torsion bar and vehicle curve performance is lower. Through analysis of anti-roll torsion bar, acceleration being taken into account, the dynamics models of anti-roll torsion bar and the vehicle itself are established. The results indicate that the combination of anti-roll torsion bar and rubber joints is superior to present a more reasonable anti-roll stiffness, to ensure better dynamic performance of the train, and also to lengthen the life of the anti-roll torsion bar.
The Study on the Barrier of Implementation of PPP Projects' Assessment System Based on VFM in China
Authors: Qi Xia , Yi Chao , Li Jie
Published: September 2013

PPP project success not only depends on governmental credit and private sectors capability, but also relies on the scientific and reasonable evaluation in early decision-making stage. Currently there are a lot of countries and regions internationally, where the method of VFM is used to the procurement of infrastructure projects, and achieves good results. Based on the analysis of status quo of decision-making of PPP project in China, the barrier to implement PPP projects assessment system based on VFM in china was thoroughly researched. Thus, reasonable proposals to promote the implementation of VFM assessment system smoothly in china were put forward.
Research on the Freeway Environmental Supervision Program and Supervision Troops Setting
Authors: Lu Lin Guo , Cao Li Na
Published: September 2013

Freeway environmental supervision in our country becomes more and more standard and has been brought into the system of engineering supervision. Combined with current status of freeway environmental supervision, freeway environmental supervision program and supervision troops setting were discussed and analyzed in this paper.
Research of Expert System in Nuclear Power Plant
Authors: Yan Xiang Wei , Zheng Ying Feng , Yuan Can , Duan Meng Qiang
Published: September 2013

With the rising of the nuclear power plant accident, making the knowledge base of knowledge express difficultly, the inference efficiency of the device system is decreasing as well, but the complexity of nuclear power plant has led to the uncertainty of knowledge. In order to solve these problems, the credibility factor and uncertainty propagation algorithm of the network model is applied to the knowledge representation and inference of expert system, and using the CLIPS implements the fault reasoning. Experiments shows that use of credibility factor and uncertainty propagation algorithm of the network model can effectively solve the uncertainty information and structured knowledge representation in the event of a failure, and inference efficiency of nuclear power plant is improved.
In Demand Side Management Based on Sensitivity Study Ladder-Type Electricity Price Program
Authors: Xiong Wei , Zou Yu , Su Shi Wei
Published: September 2013

Ladder electricity price is as a means of power demand side management. Not only can smooth the load curve, you can also take care to low-income residents, in addition also has important significance for the effective utilization of resources. For ladder electricity pricing mechanism, considering residents electricity costs at the same time, using sensitivity analysis method study the effect of ladder electricity price pricing schemes. And ladder electricity price plan data in Hubei province as the foundation, combined with local consumption situation analysis, to the further development of ladder electricity price and the pricing offer certain reference basis in the future.
Application of Computer Simulation to Ensure Comprehensive Security of Buildings
Authors: Volkov Andrey , Chelyshkov Pavel , Sedov Artem
Published: September 2013

This article concerned with the problem of defining optimal composition of engineering systems, providing comprehensive security buildings and complexes. The author proposed a way based on the application of probability theory, simulation and scenario modeling.
An Application of Digital Rights Management in Network Learning System
Authors: Yu Dong Mei
Published: September 2013

With the Internet expanding quickly and there being a tremendous underlying market for digital content distributing, it brings a new technology that protects digital content from pirating and destroying--digital rights management (DRM),DRM not only protects content by encrypting, but also protects the content creator and owners rights and interests. The article primarily studies the multimedia courseware DRM in the distance network learning system. It firstly introduces the DRM based theory, then presents a DRM structure model and functional model, which is very important for the ulterior development.
A Research for Image Defogging Algorithm
Authors: Fan Yu , Wu Xue Feng
Published: September 2013

Computational photography and image processing technology are used to restore the clearness of images taken in fog scenes autmatically.The technology is used to restore the clearness of the fog scene,which includes digital image processing and the physical model of atmospheric scattering.An algorithm is designed to restore the clearness of the fog scene under the assumption of the albedo images and then the resolution algorithm is analysised.The algorithm is implemented by the software of image process ,which can improve the efficiency of the algorithm and interface.The fog image and defogging image are compared, and the results show that the visibility of the image is improved, and the image restoration is more clearly .
An Algorithm of Searching the Best Receiving Point through the Side-Lobe of the Synchronous Communication Satellite
Authors: Wang Xin , Li Zhen Dong , Zhang Zheng , Hu Lei
Published: September 2013

Determining how to search for the best receiving point of the satellite ground receiving station is the main objective, when it can only be set in the area where the side lobe of the transmitting antenna in the synchronous satellite covers. The scenario of the synchronous satellite communication system was built with the help of the STK software, the method of building the antenna model was introduced. Based on the scenario, by bringing in the GA, the algorithm of how to search the best receiving point rapidly and accurately was given. The comparison of the simulation results shows that the algorithm of this paper gives a better performance on the time costing and calculation speed than the conventional method, so the algorithm given by this paper has some application value.
Analysis on Difference of Contaminated Normal Distribution PDF
Authors: Zhou Fang Bin , Guo Yun Kai
Published: September 2013

As a very important distribution, contaminated normal distribution play a great role in data processing. The probability density function (PDF) feature of the contaminated normal distribution was investigated. The Kullback-Leibler distance is suggested for measuring PDF difference between mean shift model and variance inflation model. Numerical calculations show that the PDF difference of two kinds of model is related to mean shift parameter λ and the variance inflation factor α closely when the main distribution is the standard normal distribution and the relationship is nonlinear proportional.