bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of New Village Layout on Flood Control Based on Hydrodynamic Model in Henan Yellow River Floodplain
Authors: Li Li Qin , Cui Wen Juan , Liu Xin
Published: September 2014

Rich land resources in Henan Yellow River floodplain as well as China's new rural construction strategy provides an opportunity for new rural construction in Yellow River floodplain of Henan province. In this paper, the flow changes before and after the floodplain 2D hydrodynamic mathematical model to simulate the village station construction, water changes can clearly reflect the village station, near the village before and after the construction area and the upstream and downstream, contribute to the analysis changes in hydrodynamic conditions before and after the village station construction and effect on the river regime change.
Effect of Projects within River Courses on Flood Control through Superposition Calculation Method
Authors: Liu Xin , Wang Feng Qun , Du Juan , Li Li Qin
Published: September 2014

Henan Yellow River floodplain is the area for flood flowing, flood detention and sand sediment; it is also necessary for the production and living. With the rapid economic development along the Yellow River, floodplain development is increasing, occupying some land and water area. Due to the lack of unified planning, they have brought certain difficulties to flood control management and scientific decision-making. This paper first proposed specific superposition scope and calculation method for projects within river courses. Compared with the previous single calculation of backwater and scouring, it more truly, accurately reflect the actual situation of projects within river courses.
Infiltration Characteristics of Soil Moisture in Liangping County
Authors: Yan Shu , Gao Juan , Zhang Zhong Yuan , Zuo Feng Lin , Zhang Wei Hua
Published: September 2014

In order to relieve water shortage, many countries develop water-saving industries and increase water use rate of irrigation. The research on soil water infiltration has important effect on infiltration and runoff, as well as for irrigation. The study carried out in Liangping district of Chongqing by using double ring infiltration method and exploring the reasonable infiltration model in the study area. The relationship of initial soil moisture and irrigation coefficient was studied as well. The results showed that: the Kostiakov empirical formula could simulate the process of soil water infiltration properly. The soil infiltration rate of Liangping is 0.0320cm/min in the selected location.
Model Test of the Riverbed Deformation for the Flood Control Project of Chengde Reaches of Luanhe River
Authors: Zhao Hai Jing , Jin Ya Dong , Yan Huang Feng , Chai Fu Xin
Published: September 2014

The flow field variation and the riverbed deformation of Chengde reaches of Luanhe river before and after the construction of the embankment and dam engineering were studied by the river model test. The results showed that the dike layout was reasonable, the designed erosion control measures can resist the local scour, and the dam reduced the scouring. So the maximum erosion depth near the left and right dike was decreased by 3.0m and the average depth reduction was 0.9m. Under the dam project conditions, the deep scour pit at the dike toe with the maximum scouring depth of 4.0 - 5.0m was shaped. Such erosion control measures as the fuseplugspillway form is suggested to reduce the erosion significantly.
Periodical Water Production Function of Processing Tomato (Solanum lycopersicum) Subjected to Water Deficit in an Arid Environment
Authors: Zhang Heng Jia , Zhang Ji Dong
Published: September 2014

A trial was conducted to investigate water sensitivity index (WSI) and water production function (WPF) of processing tomato subjected to water deficits in an arid environment. The WSI at various growth stages of processing tomato were maintained and a periodical WPF was established based on Blank model. The maximum WSI of processing tomato was marked at flowering with 0.7108 while the minimum was maintained at seedling with-0.0854. In addition, WSI was extremely lower at full fruiting compared to at flowering but notably higher than at seedling. Therefore, processing tomato was extremely sensitive to water deficit at flowering and high levels of soil moisture contents should be maintained while was not sensitive to water deficit at seedling and high levels of water deficits could be controlled without causing yield reduction.
Temporal Variation of ETo in Recent 50 Years in Hilly Area of Central Sichuan
Authors: Tang Ying Min
Published: September 2014

Monthly potential evapotranspiration (ET0) from 1957 to 2010 is estimated with Penman-Monteith method in four stations in hilly area of central Sichuan, China. Results show thatET0has a decrease, temperature has a significant increase, relative humidity has a significant decrement, sunshine duration and wind speed have very significantly downward trends. Climate tends to warming and drying in recent 50 years.
Discussion of Muddy Surface Settling of Xiaolangdi Reservoir
Authors: Jiang Si Qi , Zhang Jun Hua , Gao Guo Ming , Wang Hong Wei , Li Tao
Published: September 2014

Sediment settling velocity is an important parameter in particle suspension and indispensable link of hyperconcentrated flow as well as basic theory support for efficient sediment transport of Xiaolangdi Reservoir. This paper has adopted current sediment sample in Xiaolangdi Reservoir to take still water settling experiment, observed carefully silt sediment distribution during different settling duration under various initial concentrations, analyzed common settling velocity calculation method, and adopted settling duration curve method as calculation method to obtain a constant settling velocity of free settling section. Typical settling velocity that is obtained from experiments makes supplement and fitness to settling velocity formula of the existing groups of sediment sample, amends the formula coefficient, further explore the settling characteristics and settling velocity of fine particle mixed viscous sediment with water concentration change, and meanwhile this paper researched settling distance impact on settling velocity, existing sediment group settling transition to mesh settling critical transition silt concentration of Xiaolangdi Reservoir.
Analysis of Precipitation Characteristics of Poyang Lake Basin
Authors: Cao Yan Hua , Ye Xiao Feng , Lv Guang Hong
Published: September 2014

This paper was based on the Poyang lake Basin’s 55a rainfall data (1959 ~2014). First, the recursive linear interpolation method was used to complete the daily precipitation observation data of 55a to establish the Poyang lake basin’s data. Then the linear regression method was used to study the change trend of Poyang lake basin: the number of days of rainfall, days of light rain, days of heavy rain, days of rainstorm and days of continuous no rainfall. The results suggest that: 1) In the past 55a, there is no apparently change trend in precipitation between the annual and flood season. The precipitation has been with cyclical fluctuations. 2) The monthly variation trends in the water level of stations in Poyang lake basin are basically in accordance with the precipitation’s trends. 3) The precipitation has similar characteristics in spatial distribution between the annual and flood season, most concentrates in Raohe basin and XinJiang basin. 4) The total number of rainy days and light rain days shows a decreasing trend, but the heavy rain days and rainstorm days increase significantly on versus. The precipitation intensity has enhanced, also the days of continuous no rainfall show an increasing trend. That is the drought flood risk increases.
3D-GIS System Research and Development for Emergency Hydrologic Analysis
Authors: Chai Fu Xin , Chai Dong Mei , Dai Hui Ran , Huang Shi Feng
Published: September 2014

In view of the present situation of frequent flood and drought disaster in China, and lacking of technology for emergency hydrologic monitoring system and emergency response analysis. Face to emergency hydrologic forecast, this paper study on hydrologic information extraction and flood inundation risk emergency, and set up emergency hydrologic analysis system with the function of emergency hydrologic information extraction, flood simulation, flood analysis and hazard evaluation and so on. The system provided technical support and analysis platform for emergency hydrologic monitoring, forecasting and decision making.
Modal Analysis of a Turbine Blade Based on Fluid-Thermal-Structural Coupling
Authors: Zhang Qiang , Zhao Wei , Liu Tian Yuan , Xie Yong Hui
Published: September 2014

The dynamic analysis of a turbine blade is carried out. The pre-stress due to rotation and fluid-thermal-structure coupling effect are considered. At first flow analysis and thermal analysis on the blade and corresponding stator-rotor blade passage are conducted to acquire the flow field and body temperature field of blade. Then stress in the blade is analyzed considering pressure and temperature in a static condition, and the matrix for pre-stress effect and an additional matrix due to the external temperature and pressure loading are obtained. And so the dynamic equation of the blade system including the pre-stress effect and the coupling effect is established. The frequencies and vibration modes of the blade system in six different coupling conditions are obtained by using of ANSYS and CFX. It is found that the fluid-thermal-structural coupling field has a significant influence on the blade natural frequencies. Also, the impact of temperature on frequency is embodied more in the change of material elastic modulus E with temperature than in the thermal stress caused by temperature gradient.
Analysis of Spatial Distribution Characteristic of Urban Landscape Water in Shandong Province
Authors: Xu Qiao Yi , Wang Wei Ping , Deng Hai Yan
Published: September 2014

With the requirement of the construction of water eco-civilization, the urban development in Northern China have paid more attention to the construction of landscape water. The spatial pattern of landscape water directly affects urban ecological function, but now, the study of this field is too little. Four typical distribution of landscape water area in Jinan, Weifang, Linyi and Jining of Shandong province, China were selected as study areas, four appropriate spacial indexes, such as suitable ratio of water surface area, shape index, evenness index and dispersity index were adopted and the corresponding standard for each index were determined to compare four cities’ landscape pattern with comprehensive analysis. So it is essential to reasonably plan landscape water area of land use in the future in order to give full play to its ecological effect in cities.
To Confirm Structural Coefficient for Design of Penstocks in Hydropower Stations by Partial Factors-Based Method
Authors: Yuan Zi Hou , Sun Wei , Yuan Yi Chen
Published: September 2014

When confirming the partial factors in design formulas by the probability-based limit states design method (PLSDM), the structural coefficient can determined by two methods. On one hand, the structural coefficient is determined by the engineering experience calibration method, which is calculated by decomposition of the safety coefficient in the former specifications SD144-85. On the other hand, it can be determined by the probability analysis method and optimization calculation based on the target reliability index resulted from reliability calibration analysis. The appropriate value is finally determined by synthesizing results of the two methods.
Analysis of the Rigional Water Resource between Supply and Demand Balance and the Study of Countermeasures under the Background of Urbanization - A Case Study of Yulin City
Authors: Liu Xiao Jun , Lei Ni
Published: September 2014

This article tries to analysis water balance and solve the current problem In yulin city as an exampleunder the background of urbanization. Firstly, urbanization is a complex dynamic process, which contains many factors. Analysis the development process and its development and utilization of water resources conditions. Secondly, based on the basic characteristics of water resources of the city under the background of urbanization, further explores the causes for the effective use of water resources situation is not optimistic and analysis of supply and demand balance of water resources. Finally, finds the reason of yulin city belongs to the shortage of water resources, and limited carrying capacity. And puts forward practical measures to ease the urbanization that brings the contradiction of water resources supply and demand. It will fundamentally solve the issue of water resource shortage, balance of water resources supply and demand of local district.
Plants of Constructed Wetland Wastewater Treatment Systems: A Comparison of the Oxygen Release from Roots of Typha and Phragmite
Authors: Dong Chan , Huang Ying Hao , Wang Shun Cai , Huang Yong Jie , Tao Lei , Xu Yue Xin
Published: September 2014

Constructed wetlands have recently been widely used around the world to purify wastewater. As an important component of constructed wetland system, plants improve water quality by increasing oxygen concentrations in the rhizosphere. However, little was known about the ability of oxygen release from roots with different species. And the reason of the difference is still unclear. This paper investigated the variation of oxygen release rate from roots ofTyphaandphragmiteusing a titanium (Ш) citrate buffer. Compared the ability of oxygen release fromTyphaandphragmite. The results shows that oxygen release rates with the same condition were higher forPhragmites. This difference is caused by the special structure ofPhragmites. The aerenchyma ofPhragmitesis good at the oxygen transport. The results of this paper can help us to choose better vegetation species for wastewater treatment.
Research on the Moveable Oil in Tight Oil Reservoir with NMR and Centrifugal Experiment
Authors: Guo He Kun , Zhu Qi , Meng Zhi Qiang , Li Hai Bo
Published: September 2014

In order to quantitatively analyze the contents and distribution of the moveable oil in tight oil reservoir, this research has done experiment on 12 representative cores. The total moveable oil saturation is between 5.17% and 43.30%. And the big throat controls less contents of moveable oil than the small one, throat radius between 0.02μm~0.1μm plays the leading role, and nanometer throat controls most of the pore space of moveable oil. Comparing with permeability higher than 0.1mD, permeability between 0.03mD~0.1mD, permeability between 0.01mD~0.03mD, permeability lower than 0.01mD, the first one has the biggest content of the total moveable oil, and its moveable oil is mainly controlled by throat radius between 0.02μm~1.0μm, while the moveable oil of permeability between 0.01mD~0. 1mD reservoir is mainly controlled by throat radius less than 0.1μm, and the other reservoir is mainly controlled by throat radius between 0.02μm~0.05μm.
Study on the Bauxite Slimes Engineering Characteristics of Pingguo Alumina Industry Company
Authors: Wang Ji Hua , Zhao Chun Hong
Published: September 2014

To study the slimes engineering properties of Pingguo Alumina Industry Company bauxite tailings that accumulated under natural conditions, Site test and laboratory test are used. Test results show that the oxide of the bauxite are alumina, silicon dioxide, ferric oxide; the mineral composition are mainly kaolinite, hydrogarnet and hematite; the grain of the slimes are silt and clay with a small amount of sand; the microscopic structure of bauxite is "super impracticable structure"; the total pore volume is 0.441ml/g; the total pore surface area is 6.747m2/g; the specific surface area of the grain is 131.53m2/g; the main ion exchange is K+ and the exchange capacity is 0.26-0.32mg/g; the average coefficient of permeability is 3.05×10-6cm/se; the average moisture content is 130.3%; the average limit of liquidity is 57.1%; the average coefficient of compressibility is 0.79; the avera-ge cohesion is 23kPa; the average internal friction angle is 10.2°, so the slimes is high liquid limit, high compression and low shear strength soil; the water holding capacity of the slimes is 79~93%; the slurry concentration which had stacked more than 18 months is 49.92%, so the slimes is slurry.
The Influences and the Mechanism of Action of Sodium Hexametaphosphate during Micro Fine Particle of Lean Hematite Ore of Grinding Operation
Authors: Liang Bing , Zhao Li Bing , Han Miao Miao , Zhang Hao , Zhang Qing Feng , Zheng Wei Min , Wu Wen Shuang , Meng Ao Shu
Published: September 2014

In this paper, the effect of sodium hexametaphosphate on the hematite was studied and the mechanism was analyzed. The results indicated that under the condition of the optimal grinding medium, compared with the result without sodium hexametaphosphate added, with citric acid added at the mass of 0.30% of the hematite, the content of-0.074mm of grinding production was increased by 6.38%; physical adsorption and chemical adsorption which were on the surface of hematite produced by sodium hexametaphosphate can reduce viscosity of grinding pulp, change surface potential of the hematite, and reduce the hardness on the surface of the hematite. Therefore citric acid can improve the grinding efficiency of the hematite.
Study on Waterfront Landscape Design Based on Regional Culture
Authors: Wang Yang , Chen Yan
Published: September 2014

With the development of human society, people’s requirements on landscape environment have been increasingly higher. Waterfront landscape, as the important component of a city, shall not only demonstrate the natural beauty of natural landscape but also the ecological and humanistic beauty of human landscape. This paper finds out the related principles and design methods to integrate regional culture into the design of waterfront landscape through analyzing the concepts and content of waterfront landscape.
The Green Space Growing from Building: Space Analysis and Evaluation on the Outdoor Environment of Shenzhen Foreign Languages School
Authors: Hu Yi Ran , Zhang Kai Li , Zhou Xi
Published: September 2014

With rapid economic development in China and input into primary educational facilities, outdoor environment of middle school campus has also increasingly drawn attention from people from all walks of life. In spite of this, we still have many problems and misunderstanding about outdoor environment of middle school campus in the aspects of cognition and actual construction. Based on the example of Shenzhen Foreign Languages School (Senior High School), this paper has introduced and analyzed its outdoor environment space of campus and summarized spatial processing methods finally to demonstrate existing problems in the outdoor environment design of campus, including safety and function problems, excessive attention to expression of campus culture and restriction of base conditions.
An Empirical Study on the Impact of Road Infrastructure of Urbanization in Shaanxi Province
Authors: Tang Xiao Ling , Zhang Yi Fei
Published: September 2014

The road infrastructure is one of the most important factors in the process of urbanization.The paper combined with the specific circumstances and characteristics of urbanization in Shaanxi province and road infrastructure, through the use of panel data model, empirical analysis of road infrastructure to influence on the urbanization of Shaanxi province .The results showed that the effect of infrastructure, highway of Shaanxi province urbanization significantly, especially the influence of highway, first-class road, etc,high-class road of Shaanxi province urbanization is the most significant, and to a certain extent, led to the urbanization of Shaanxi province appeared in Guanzhong Area Urban obviously higher rates and Northern Shaanxi, Nouth Shaanxi town the rate of agglomeration is low.
Fuzzy Comprehensive Evaluation of Carrying Capacity of Water Resources in Shanxi Province
Authors: Liu Yang , Wang Hao , Wang Jian Hua , Chen Xiang Dong , Liu Jia Hong
Published: September 2014

Based on adequate consideration of status of water resources utilization and socio-economic development in the Shanxi Provinces, the AHP method was used to calculate the weights of each index and the fuzzy comprehensive evaluation of water resource carrying capacity in the Shanxi Province was carried out from 2006 to 2011. The evaluation results indicated that the overall level of the water resources carrying capacity in Shanxi Province was contained in critical state, however, a steady rise.
Study on Urban Design of Ganzhou & Nankang Financial Center
Authors: Wang Xue Qiang , Fan Li Ya , Cao Lei
Published: September 2014

With the strategy implementation of rising in central of China, Jiangxi Province is entering a new development in historical period. As the important city of red revolutionary old section and city zones of Beijing-Kowloon, Ganzhou obtains the new development opportunity. As an important city in Ganzhou, Nankang is also integrated into urban district of Ganzhou and it brings vitality to greatly accelerate development of Ganzhou. Its private economy is active and local financing demand is very strong. Therefore, we should establish financial center and based on Ganzhou, the planning and strategy faces with China emerges as times requires. The urban design of Nankang financial center aims at optimizing function and system as well as promoting economic development, enhancing its space quality, modeling city image and optimizing city ecological environment.
Study on Utilization of the Space under Urban Viaducts in Harbin
Authors: Li Shu Ting , Guo Li Juan
Published: September 2014

The space under the urban viaducts is part of urban space and it is closely related to land use, city traffic, the public life, landscape system. This article focus on the space utilization under viaducts in Harbin. Through the investigation and research, this article analyzes the current utilization of viaducts space from usage mode, coordination function, landscape and management. And it introduces the construction of viaduct and building types. Then it propounds the utilization principles of the viaducts space. Finally, it point out the utilization strategies of the viaducts space in Harbin city from overall design, adaptability of area, gradient utilization of time, construction of green and landscape, planning and management.
The Characteristic and Protection Analysis on the Renmin Street - The Historical Axis of Changchun
Authors: Bai Li Min , Hou Jian Min
Published: September 2014

The Renmin street is the central and historical axis of Changchun, it witnesses the history of urban development in more than one hundred years. The author first analyzes the planning that "wide and straight, ups and downs as belt, street trees in rows, gardens in pieces, squares cluster, buildings set off" and architectural characteristics of the Renmin street. Then the author introduces the typical protective historical buildings along the line. Finally the paper puts forward several protection principles for the long axis with the historical sequence.
The Countermeasures for the Institutional Limitations on Planning and Implementation in China Rural Towns
Authors: Liu Xiao Ping
Published: September 2014

Currently, the rural-town planning in fast-developing region have encountered various constraints in reality in China, especially the institutional limitations, which in a long-term, consistently hinder the improvement of rural town planning and its implementation. Facing the challenges, various countermeasures have been conducted attributed to exploration in practice and learning from international advanced experiences. This essay concluded some updated methodogolies on rural-town planning and management to improve the performance of planning and implementation.
The Dialogue of New and Old Building in the Process of City Development - Research the Fusion Methods of New and Old Building in Yichang City
Authors: Yan Ting , Xia Yuan Chun , Li Jing Yu , Ji Min Min , Liang Xiao Hong , Wang Kang
Published: September 2014

The paper analyses the significance and value of the old building existing in today's society at first. And next, it expounds the relationship between the new and old building in modern society. And then, it analyzes the problems of the fusion of new and old building which exist in Yichang city during the process of city development. We are researching how to solve the problems of the fusion of new and old building in Yichang city by studying the current relatively successful example of retrofitting the old building in domestic and abroad, and hope it can provide references of the fusion methods of new and old building in the other cities.
The Ecological Planning of Riverside Region in Lanzhou
Authors: Zhang Xiao Juan , Chen Hui
Published: September 2014

According to the time course for the axis, this paper deeply studies the changes of the plan shape and dominant function of the Yellow river in the Lanzhou’s main urban area, and the influence interrelation with urban pattern. Then, from some new perspective of the whole area, environmental benefit, social benefit, etc., this paper presents a series of ecological planning approaches according to the existing problem in riverside area.
To Promote Sustainable Urban Development - Advantage Study of Roof Greening
Authors: Ma Heng Sheng , Lu Wei
Published: September 2014

As the “fifth facade”of building,roof is one of the approaches to promote sustainable urban development for its advantages.This paper demonstrates the benefits of roof greening on living conditions and energy efficiency,puts forward some advisements about combining the application of roof greening technology with Geography and climate,pursuing the accordance in nature ,economy and resources.
Researching on New Urbanization in County Regions
Authors: Hong Guang Rong , Chen Bi Feng
Published: September 2014

There are many problems in the urbanization of county regions such as towns on small-scale, urbanization of low level, lagging service facilities, weak development support, not strong county center, insufficient attractive force of towns, central villages not yet formed. Some specific methods and measures are proposed on construction of new urbanization in county regions, for example, exerting local advantages of resources and environment, strengthening the center, constructing professional towns and villages of characteristic, building towns and economic development zone, making innovative mechanisms, coordinating towns and villages, realizing informatization of every industry, sharing public services, establishing various professional cooperative organizations, industrial parks and production bases, strengthening trade and logistics links outside the region, improving the ecological environment, perfecting the land transfer market between towns and villages, which are specifically described with an example of Dawu county.
Old Neighborhoods Renovation Design from Low-Carbon Eco Perspective - About Yong Kong “Old Town Characteristic Cultural Blocks” Renovation Design
Authors: Wang Ka , Cao Zhen Yu , Xu Lei
Published: September 2014

This study is about the old neighborhoods renovation assessment and design with questions of five times adjustment for Yong Kang Project urban design. Old neighborhoods renovation assessment criteria are set up through compare with Green Community Assessment criteria to the adjusting problems. The indices are used in the planning of this project. The results verify the necessity and feasibility of old neighborhoods renovation design from low-carbon eco perspective.
Research of Intersection Navigation Algorithm Based on Intelligent Agent
Authors: Tang Jin Peng , Li Ling Lin , Liu Shu  Kun , Hu De Peng , Cai Me Ling , Liu Xiao Qiu
Published: September 2014

In order to improve the vehicle alone path finding way, put forward a kind of road navigation algorithm based on agent. First put forward the intelligent design method, and then the intelligent design is mapped to different kinds of the intelligent agents. And then expounds the function of operation control agent, agent, Lane agent and intersection agent needs to realize. Finally, based on these agents of the navigation algorithm is designed using Dijkstra algorithm.
Research on Integrated Scale Prediction of Freeway and Expressway in Metropolitan Area
Authors: Zhang Ning , Guo Xiu Cheng , Xu Xiu
Published: September 2014

Freeway and expressway are the main supporters for the long and fast travel demand in metropolitan area, which play the vital roles in urban transportation system, producing huge transport efficiency. In this context, the integration of both in planning and construction is one of the important measures to alleviate the urban traffic problem. Specifically, the following question should be focused on: How to predict the scale of them. In this paper, based on demand analyzing and supply characteristics of freeway and expressway system, a supply-demand balance method for predicting the integrated scale of freeway and expressway was conducted, and the supply-demand balance model was established. Finally, an applied research was carried out as an example in Zhenjiang metropolitan area.
Non-Uniform Sediment Input of the Middle Yangtze River, China
Authors: Ge Hua , Zhu Ling Ling , Huang Ren Yong
Published: September 2014

The non-uniform sediment input has played a significant role in the bed evolution in the middle and lower Yangtze River, which indirectly influences the amount of the sediment transported into the East China Sea every year. However, it has been dramatically changed by the climate change, especially the human activities in the upper Yangtze River, not only the amount, but also the grading. The average annual sediment load has reached to 402.6 million tons since 1960s, while showing a decreasing and refining trend mostly influenced by the human activities, such as soil and water conservation, and large hydropower projects. The most direct consequence of these changes was to cause severe erosion in the middle and lower Yangtze River, further to bring about fluvial regime adjustment. In this article, a series of daily and annual averaged sediment transport data since 1960’ were collected and analyzed to find the impacts of the significant human activities on the non-sediment input of the middle Yangtze River, and then its variation tendency was predicted, affected by the existed large hydropower projects and to be build ones in the upper Yangtze river. The result shows that the non-uniform sediment input of the middle Yangtze River was slightly reduced by the operation of Gezhouba Project and the up and middle Yangtze River water and soil conservation prevention and control projects, and further less after the impoundment of Three Gorges Reservoir, meanwhile its grading has been getting finer and finer. In future, along with the normal operation of the Three Gorges Reservoir and the built of the cascade reservoirs in the upper main stream and tributaries of the Yangtze River, it will be continuously reduced and refined.
Research on Simulation Evaluation of Strategic Projection Base Construction Planning in ExtendSim Environment
Authors: Peng Fu Bing , E Er Dun , Cui Teng Long
Published: September 2014

Take Zhengzhou Strategic Projection Base as the typical object, by analyzing its operating process and equipments, creating simulation models, determining input parameters, running simulation models and analyzing the output, this paper tested and evaluated the designed capability indexes, found the working bottlenecks, and provided the basis for optimizing design planning and improving construction efficiency.
Study and Application of Green and Low-Carbon Highway Evaluation Indicators System
Authors: Ouyang Bin , Feng Zhen Hua , Yang Xue Ying , Liu Yang , Zhang Yi
Published: September 2014

Based on four categories of indicators, including comprehensive indicators, technical indicators, supporting (managerial) indicators and characteristic indicators, combined with actual characteristics of Chinese highway development, this paper discusses about and builds a green and low-carbon highway evaluation indicators system, and puts forward a set of simple and practical evaluation methods and evaluation standards system; with case study of Linxiang City to Yueyang City (Da-Yue) Expressway in Hunan Province, this paper also conducts empirical pre-evaluation of planning level in 2017, and verifies scientific validity of the indicators system.
Study on the Relationship between the Development of Rail Transit and the Evolution of Urban Spatial Structure: Taking Guangzhou as an Example
Authors: Zhu Zheng Liang
Published: September 2014

At present, rail transit in China is booming. At the same time, some big cities are undergoing a crucial stage of adjustment of urban spatial structure. Therefore, it is significant to study the relationship between the development of rail transit and the evolution of urban spatial structure. This paper reviews the development of Guangzhou rail transit and the evolution of Guangzhou urban spatial structure, and discusses the relationship between them. The conclusion is that there is interactive relationship between the development of rail transit and the evolution of urban spatial structure, and the construction and planning of rail transit should coordinate with the current condition and future planning of urban spatial structure. During network planning, the focus should not only be placed on the rail transit project itself, but the construction of a scientific and reasonable urban spatial structure, so that rail transit can contribute to sustainable urban development.
A Method for Predicting Probabilistic Resource Conflicts between Trains
Authors: Zheng Jian Bo , Guo Jing Wen
Published: September 2014

The development of high-speed railway construction and operation greatly shorten people's travel time, however, the demand of people on travel time reliability becomes more and more prominent, so train dispatching plans are becoming more and more important. This paper defines probabilistic conflicts between trains, analyses probabilistic conflict influence factors and comes up with a method for predicting probabilistic resource conflicts between trains. The method aims to improve the accuracy of train conflict prediction, provide more reliable basis to solve train conflicts and develop more efficient train dispatching plans.
Current Situation and Thoughts on the Cultivation of Undergraduate Urban Rail Transit Talents in China
Authors: Chen Jun , Wang Qiu Ping , Wang Zhao Fei
Published: September 2014

Construction of the urban rail transport system in China is witnessing a fast-developing period. This industry needs a large number of special talents in the area of design, construction, equipment manufacturing and operation management. Over recent years, some Chinese universities have launched mass transit programs in response to the growing demand of the rail transport market. In this paper a study is made on the cultivation level and orientation of rail transit talents at China’s universities, with the existing problems analyzed, summarized and the solutions presented.
Models on Real-Time State Identification for Unban Traffic Based on Fixed Detector
Authors: Chen Xiu Feng , Liu Xin , Han Feng , Wang Dong Liang , Yin Ji Jun
Published: September 2014

For the advantages and disadvantages of the traffic state identification based on fixed detector, a kind of method on the real-time state identification for the unban traffic was presented in order to improve accuracy and practical level of the traffic state identification. From analysis on detectors distribution and data collection methods, this paper carried out data preprocessing which collected from fixed detectors, then established the identification methods and thresholds for traffic state, developed the evaluation models of urban traffic congestion. Finally, the practicality of models was validated according to the traffic data collected by fixed detectors on typical roads in Qingdao city. The results show that the traffic state identification of the models is effective and with high precision.
Vehicular Ad-Hoc Network and Routing Design
Authors: Zhao Ning , Li Xue , Yang Mei , Huang Xin Ting
Published: September 2014

To analyze vehicular Ad-Hoc network routing performance, the GPSR routing performance is studied using network simulation software NS2 compared with traffic simulation software VanetMobiSim. 100 nodes communicated with each other was stimulated by adding routing protocol into NS2, building the environment of simulation, setting simulation parameters and writing TCL script. The data packet delivery path was examined by trace files and GPSR routing performance was concluded through Gawk. The average end-to-end transmission delay trends to increase and the average delivery rate trends to drop when the average speed of vehicle nodes increase.
Research on the Challenges and Solutions of Urban Flood Control System of Nanjing City
Authors: Wen Xin , Fang Guo Hua
Published: September 2014

Currently, the development of flood control system of Nanjing City has been entering a new critical phase, facing some great challenging problems that never experienced before. To meet these challenges, this research initially reviewed the developing process of flood control system of Nanjing City after China's reform and opening up. Based on the analysis of current flood control situation, four major challenge of was summarized. To solve these problems, this research provided some productive suggestions for future development of flood control system of Nanjing City from six perspectives, namely principle of flood control, layout of flood control system, drainage system improvement, flood management, technology application and supporting measures.
Action of Traffic Measures on Supply Chain Network Equilibrium
Authors: Cao Wei , Zhang Xi , Ji Shou Wen
Published: September 2014

The decision of freight transport are typically made for SCNE(Supply Chain Network Equilibrium),and its behavior is known to be influenced by regional conditions of traffic network,but little is known about role of traffic measures which have efficiency on SCNE.Unlike other studies in the extent literature,we aimed to cover the interaction between traffic measures and SCNE. We formulated variational inequality in terms of strategies and strategic flows as SCNE conditions.We employed an iterative algorithm of MSA to this variational inequality by solving a dynamic program.A numerical example proves the validity of our model and algorithm,and we show that our algorithm has faster convergence ability than existing algorithms.Moreover,results show that the amount of products and surpluses of SCN increase as traffic link capacity increases.We conclude that improvement of traffic network could enhance the efficiency of SCN.
Reservoir Flood Forecast of NanSi Lake in China
Authors: Ma Jing , Yang Ling Qiang
Published: September 2014

Nansi lake is composed by Nanyang, zhaoyang, dushan and weishan through natural open channel. The characteristics of 4 lake are great disparity, and inflow each other. Because of the complicated influence of transmitting water by open channel, observation error of reservoir level and calculation error of backwater storage, many flood forecast projects established in the past did not come to applied level. This paper develops the conflux forecast project of anti-error zoning based on analyzing characteristics of error generation of Nansi lake flood, and adopts real-time adjustment technique. It basically avoids the calculating error problem, the qualified rate of flood peak, the qualified rate of time to peak of Nansi lake flood forecast project come to 89.3%,100%,91.3%.
A Comparative Study of Different Hydrological Model and their Application in Little River Catchment
Authors: Yan Shu , Zhang Zhong Yuan , Zuo Feng Lin , Zhang Wei Hua
Published: September 2014

Sacramento, SimHyd and Tank model were selected and their structure, principles and characteristics were briefly described. Then by taking Little River Catchment in Georgia, USA as an example, the rainfall-runoff process was simulated by using the Rainfall Runoff Library. The results showed that: Nash-Sutcliffe coefficient reached more than 80% and RE (relative error coefficient of the total runoff) of Sacramento model also meets the requirements. Considering the Sacramento model is the best one on the Nash-Sutcliffe coefficient, the model is selected as the optimal model of Little River Catchment in this study.As the catchment is located in the southeastern USA, with humid climate, and saturated storage-based runoff generation, which is similar to Chongqing region, it provides relatively good reference for Chongqing as well as the entire southwestern region.
Study on the Improvement of the Safety Distance Model Based on Speed Difference
Authors: Ge Ting , Fu Xin Sha , Ma Ji , Kang Liu Qing
Published: September 2014

Considering the diversity and random of the factors in traditional safety distance model, the deceleration and some time parameters in the braking action of the modified model were quantified first. When the following car moved slowly than the car ahead, it usually tailgated with speed modes. This case was considered in the modified safety-distance model. The model is proven to be higher accuracy by calculating and emulation analysis. Research shows that smaller speed difference, less the safety-distance it needs to keep, but it becomes insignificant when the following car is slower than the car ahead. There is greater uncertainty in rear-ending accidents for overlooking the fact that the car following with speeding in the traditional model.
Complexity Measurement of Eco-Residential District Construction System Based on Structural Equation Model
Authors: Hu Yun Pin , Liu Huan Huan , Chen Kai Man
Published: September 2014

This paper aims at researching the quality and quantity complex measurement of the eco-residential district construction system and provided a method for scientific decision-making. The frequency analysis method is applied to identify key complex elements. A structural equation model of eco-residential district construction system complexity measurement is established which can effectively describe the relationships among indices that influence complexity of eco-residential district construction system. The results indicate that external environment, system objective and system information possesses higher complexity character and the model is effective to assess the complexity of eco-residential district construction system.
Research on Carbon Calculation of Rural Roofing Materials
Authors: Liu Jun , Li Lin Wang , Sun Yan Lei , Qi Wei
Published: September 2014

Based on the present situation of village building adopting the internationally recognized life-cycle theory, the life-cycle calculation model of carbon emission of rural roofing materials was put forward , the calculation boundary of carbon emissions was divided and the calculation parameters and calculation formula was determined. The result shows that: under reasonable assumptions, applying life cycle theory to carbon calculation of rural roofing materials is feasible. The rural roofing materials industry by improving production process to reduce energy consumption and selecting raw material in localization as far as possible can significantly reduce carbon emissions.
Research on Rural Vernacular House Energy Efficiency in NingXia Hui Autonomous Region
Authors: Liang Rui , Lei Lin , Zhu Yi Yun , Zhang Qun
Published: September 2014

The traditional local-style dwelling houses are investigated and the energy consumption of exterior-protected constructions is analyzed in Ningxia, aiming to improve the rural vernacular indoor thermal conditions in winter and achieve the energy-saving objective 65%. Meanwhile, the vulnerable spot of building energy consumption is found. Starting from the architectural function and space organization, solar-energy resources using and exterior-protected construction and so on, the integrated scheme improvement is put forward under the local natural climate and economic conditions. In addition, we deal with the tests of new scheme thermal engineering performance and indoor thermal environmental quality through the analysis of energy consumption. Finally, it is demonstrated that by reasonable design, the rural vernacular building in Ningxia can improve indoor thermal comfort and energy saving goal.
Study of Public Building Energy Consumption Status and Energy Saving Potential
Authors: Li Fei Fei , Zhang Ze Ping , Yu Jia
Published: September 2014

This study is based on the energy audit and energy consumption analysis of Taiyuan government office building and large public building, and objectiveiy appraises the building energy consumption, makes a quantitative analysis on energy consumption situation of the energy-using building. Then we know the problems of the public building energy consumption .we can conclude that the potential of public building energy efficiency ,and put forward energy-saving measures to promote the energy saving reform of public building.
Image Texture-Based Vehicle Cast Shadow Elimination Approach
Authors: Zhou Dong Mei , Zhang Ming Xing , Dai Yong Xia
Published: September 2014

Based on the research and analysis of video sequence of the Intelligent Transport Systems,this paper especially had a in-depth discussion about the critical step of video detection—shadow removing, analyzing the causes and characteristics of the shadow,describing the current shadow removal algorithms,and proposed a new method of image texture-based vehicle cast shadow elimination approach based on the existing algorithms.Experimental results have proved that this method can remove the vehicle shadow well and still hold very complete target vehicle information and laid the foundation for extracting vehicle target.
The Gyro Error Analysis Based on Allan Variance
Authors: Dai Xiao Yan , Chen Zhi Gang
Published: September 2014

In this paper, we did the analysis of the gyro error using Allan variance method, static output data using a three-axis gyroscope of the global first integrated six-axis motion processing components MPU6050. Experimental result shows that it not only improves the estimation accuracy of gyro error, but also the amount of data required is greatly reduced.
A High Accuracy Sub-Pixel Light Spot Positioning Algorithm
Authors: Sheng Li Guo , Lv Yong , Liu Li Shuang , Geng Rui , Li Xiao Ying
Published: September 2014

Positioning accuracy of light spot locating algorithms and the stability of the spot are two key factors affect the accuracy in the multi-degree of freedom measurement system based on CCD. Two algorithms of sub-pixel measurement are present. They are threshold gray barycenter algorithm and circle fitting algorithm. The theoretical analysis was carried out with the two algorithms, and the experimental verification was also taken under the laboratory conditions. Experimental results show that the threshold gray barycenter algorithm has a higher locating precision than circle fitting algorithm that the standard deviation in 30 minutes can be under 0.04 pixels. According to CCD pixel size it can be calculated that the light spot locating standard deviation is 0.186μm.
Design of Automatic Air Purification Device
Authors: Wen Li Mei
Published: September 2014

In daily life because of polluted air people have a headache, insomnia, allergic diseases, respiratory diseases, etc. Air Purifier is also called "air cleaner" or "air sober machine". It refers to an equipment which can adsorb, decompose or transform all kinds of air pollutions,and volatilize an anion to improve the indoor air quality. In order to achieve the purpose of the microcomputer digital control of system, air purifier is designed with a single chip to reduce the artificial control. The single chip microcomputer is regarded as the core circuit part of the whole control system, the function of which is control all components of the air purification. Air purifier equipment consists of dust sensors, anion generator unit, fan module components and 4x4 matrix keyboard. Software program mainly includes: the display program, keyboard program, the clock program. This design aims at starting subsequent circuit module automatically through real-time control of air quality, achieving the function of air purification.