bluuebunny/crossref_metadata_2025 huggingface dataset:
Urban Green Infrastructures and Social Shared Choices: A Deliberative Valuation Method
Authors: Miccoli Saverio , Finucci Fabrizio , Murro Rocco
Published: September 2014

A Green Infrastructure is a network of natural and semi-natural areas, strategically planned with other environmental features, designed and managed so as to provide a wide array of eco-systemic services and benefits. Because of its different multifunctional and potentially conflicting features, designing a Green Infrastructure is a complex operation which requires an integrated approach involving the local community, so as to locate the priority uses of the local area in a transparent, integral and cooperative way. In order to provide a valuation model being consistent with the design of a Green Infrastructure, the paper proposes a deliberative multi-dimensional valuation method supporting shared public choices and open to the proactive participation of the community.
Analysis of Carbon Sequestration and Oxygen Release Capabilities of 25 Afforestation Plants in Tianjin
Authors: Wang Fang , Li Hong Yuan , Li Xin , Yang Jia Nan
Published: September 2014

CI-340 portable photosynthesis test system and JYM-B leaf area meter were employed to observe the physiological velocity and leaf area index of 25 widely used afforestation plants in Tianjin. The results indicate that the diurnal change curve of net photosynthesis rates of 25 experimental species has one or two peaks. The daily carbon sequestration and oxygen release per unit leaf area are respectively 3.98-13.01 g/( m2·d) and 2.9-9.46 g/( m2·d). Among arbors, the order of carbon sequestration and oxygen release capabilities per unit leaf area is Ulmus pumila >Fraxinus velutina>Sophora japonica>Salix matsudana f. pendula>Malus micromalus cv.‘American’>Koelreuteria paniculata>Acer truncatum>Ulmus pumila cv. ‘jinye’>Prunus davidiana>Malus micromalus>Cotinus coggygria > Rhus typhina> Platanus orientalis>Catalpa speciosa>Diospyros kaki> Morus alba cv. ‘Tortuosa’. Among shrubs, the order is Weigela florida>Euonymus japonicus>Cercis chinensis>Ligustrum vicaryi >Sorbaria sorbifolia> Syringa oblata > Lonicera maackii >Cornus alba>Lonicera japonica.
Accessible Design of the Kitchen Table for Wheelchair Users
Authors: Chen Xue , Wu Jing
Published: September 2014

Kitchen design is an increasingly important and crucial facet of the overall field of residential design. But the survey found that disabled people face many problems trying to use a conventional kitchen. An accessible or modified home can help prevent accidents and also allow people to remain in their homes longer by accommodating future lifestyle changes instead of prematurely forcing people into nursing home care. Designing an accessible kitchen workstation may be an ideal method to fit disability’s needs.
Brief Analysis of Kitchen Design Based on the History of Western Society
Authors: Wu Jing , Chen Xue
Published: September 2014

In the view of the changes of western society history, the article discusses how clime, human culture and technology influence the western style kitchen design and gives the idea of how design and lifestyle improve each other.
Improvement Strategy for Outdoor Environment Quality in Commercial Street Based on ENVI-MET Simulation
Authors: Xun Ping , Huang Shuai , Chen Zhang
Published: September 2014

The city’s outdoor wind-heat environment which plays an important role of improving citizen's livelihood has become a focus of research. For the outdoor public space similar to the pedestrian street, pedestrian-height wind and thermal comfort directly influence the value. This paper takes Jiefangbei commercial pedestrian street as an example. Based on the regional climate characteristics in Chongqing, simulation has been carried out by ENVI-met software. Then this paper makes comprehensive evaluation on pedestrian-height wind environment and thermal comfort, and proposes optimization measures according to the existing problems so as to create an outdoor space environment suitable for improving people's way of life in city.
Rationality Study of Establishing Nature Reserve in Luosuo River from the Point of Fish
Authors: Wang Ying , Wang Dong Sheng , Yang Qing Rui , Jin Tian Tian , Dong Lei Hua , Shen Chen
Published: September 2014

Hydropower development and effects on fish assemblages by dams in Lancang River Basin have arisen great concerns. As a compensation measure, Xishuangbanna State Nature Reserve was established at Luosuo River in 2007, to protect fish species affected by dams in lower Lancang River. Based on published data of fish since 1950s, we analyzed the fish biodiversity of Luosuo River and the similarity with species of lower Lancang River, using G-F index and Sprensen similarity index respectively. The results clearly show that fish biodiversity is quite high at the genus level in Luosuo River. 60 species (including 20 endemic species) were recorded in both reaches, accounting for 71.43% of total species in lower Lancang River. Similar composition of fish community and high similarity indicate that Luosuo River has the potential to protect most of fish species (including endemic species) under hydropower development in the downstream of Lancang River.
Research on Establishing Monitoring Index System of Pollution Source in Puhe Basin
Authors: Wang Di , You Kun , Fu Jin Xiang , Cao Si Peng
Published: September 2014

Scientific and reasonable monitoring indexes are the key to establish monitoring system. Based on the single index, it is essential to launch the optimization and selection of indicators. Take thermal power as the research object in demonstration area and adopt comprehensive evaluation and three parameters evaluation methods to select index, successfully construct system of monitoring indicators which include in COD, suspended solids, sulfur, oil, volatile phenol and ammonia nitrogen. It will provide theoretical basis and technical support to build intelligent water environment safety and pollution monitoring system.
Study on the Correlation of N, P Nutrients and Chlorella Growth
Authors: Wu Jun Sen , Jia Rui Bao , Li Bing , Liu Chen Chen
Published: September 2014

In this paper, the Chlorella vulgaris in Yellow River Diversion reservoir was selected as experimental subjects to cultivate in laboratory. The the relationship between algae biomass and N,P was studied from the following aspects：the type of nitrogen source, the concentration of N and P，and the ratio of N and P. It was found that KNO3 was one of the best nitrogen source for growth of Chlorella vulgaris. Chlorella vulgaris can live at the lower N concentration, while it was very difficult to survive in the absence of P. So P is the limiting factor for its growth. In addition, the optimum ratio of nitrogen to phosphorus was 16:1, for Chlorella vulgaris’s growth. It was similar to the algae outbreak in the water eutrophication, glycine as the Chlorella nutrition, the algae grew slow at early and later rapid.
The Study on Initial Allocation of Water Rights in China
Authors: Zhang Qian , Jin Jun Ying , Wang Da Ke , Qin Lin
Published: September 2014

Generally, water rights are based on the water law that applies in a particular country and, at their most basic, are classified as land-based or use-based rights.This study mainly analyzed current water rights trading in our country through summarizing the connotation of water rights at home and abroad, on the basis of analysis and comparison of the initial water rights allocation related models, at the same time, pointed out the importance by analysis of the initial water rights allocation model research, which is helpful to the initial water rights allocation for water rights market benign development.
Construction and Detection Algorithm of SAPF
Authors: Zhou Xue Song , Liu Wei , Ma You Jie
Published: September 2014

Harmonics of power system seriously affected the quality of electric power. Shunt Active Power Filter (SAPF) [1] which overcomes the shortcomings of passive filter (PF) has become main technology to suppress harmonic. In this paper, structure, mathematic model, detection method and control of SAPF are mainly analyzed and reviewed. With development of key technology of APF, it will have a better application prospect.
Design of Distributed Recommendation Engine Based on Hadoop and Mahout
Authors: Yu Jian Yun
Published: September 2014

The distributed recommendation engine consists of three layers of data storage layer, Produce recommended layer and application layer, the data storage layer is mainly stored user preferences data, these data are recommended on the basis of upper recommendation engines. Produce recommend layer producing part recommend the key lies in the recommendation engine of the algorithm, the algorithm adopts the Mahout as recommendation framework, and implement custom recommendation algorithm, including the recommendation algorithm based on user similarity, based on the recommendations from the project similarity algorithm and based on the recommendations of the Slope One algorithm after receiving recommended the client's request, the Servlet will produce a recommended by pushing engine first get data model, according to the similarity between data model computing project, and generate the recommended ID. The application layer is mainly based on B/S architecture to implement, can be very easily expanded to mobile platforms.
Research on the Performance of Routing Protocol for Ad-Hoc Networks
Authors: Wei Xing , Li Yan , Yang Xiao Jin
Published: September 2014

Ad hoc is a new kind of wireless, jump, and no center distributed control network, it does not need network infrastructure, strong self-organizing, robustness and so on. Routing protocol is an important part of Ad hoc, good routing protocol is the first problem of establishing Ad hoc three kinds of routing protocol (DSDV, DSR, ZRP) is introduced in the paper, in the experiments, we use OPNET network software to simulate the above three routing protocol, Finally analysis the grouping deliver rate, routing overheads, business, the time delay, etc., concluded results.
Study on Cloud Computing’s Key Management Framework
Authors: Guo Shuang Zhou
Published: September 2014

Based on the analysis of cloud computing safety, this paper focused on the data security problems in the cloud computing, and put forward a key management framework for cloud computing. The framework for the various cloud computing applications, Can achieve a unified, standard key management, while the framework has simple and scalable features. This paper finally introduced the basic working principle and application of the framework.
Study on the Improvement of Floyd Algorithm and its Application in Network Plan
Authors: Huang Qing Rui , Cao Ming
Published: September 2014

The construction period is one of the important accounting indicators of construction enterprises. Schedule length directly affects the economic benefit of construction enterprises. Network plan technology is an important tool for project period management, optimization and control. In the network planning technique, period is determined by the critical path. Critical path is the most important activity set line of project, which must be given special attention in the control and be special guarantee in time and resources. Whether or not take into account the various factors to the duration and critical path, and dynamically manage and control the work, is the prerequisite that the project can realize the benefit, but also a challenge in data modeling. The improvement and optimization of Floyd algorithm, namely the algorithm for the shortest path, which take all the factors into account through establishing a dynamic mathematic model. This model will self correct according to the progress of the project, to do at the time of the maximum degree to the actual data, with the budget data, thus the model itself to maximize meet the specific project itself. The improved Floyd algorithm will be strengthened in the use of network plan, which plays an irreplaceable role in promoting the implementation and optimization of project duration objectives.
Problems on Sediment Treatment and Utilization on Sediment-Laden River
Authors: Gao Guo Ming , Li Tao , Jiang Si Qi , Yan Zhen Feng
Published: September 2014

The study of the beginning of the sediment treatment and utilization is to build the levee of the river and used for construction. The problems for treatment and utilization are among the two problems. One is the money, and the other is the amount for used is much less than the sediment from above. So the plan for the utilization is important.
Flow and Sedimentation Characteristics on Typical Tributary in Xiaolangdi Reservoir on Yellow River
Authors: Li Tao , Zhang Jun Hua , Gao Guo Ming , Wang Ting
Published: September 2014

Located at the exit of the last gorge of the middle reaches of the Yellow River, the Xiaolangdi Multipurpose Dam Project occupies a critical position in controlling both runoff and sediment of the River. typical tributary Zhenshui is the biggest tributary of Xiaolangdi Reservoir and its original storage capacity is 1.767 billion m3.This paper shows the process of the longitudinal profile of tributary Zhenshui,which faces the serious sediment bar growth at its mouth. Discussion is processed to show the possibility.
An Assessment on Geographically Weighted Regression-Based Merging Method of Satellite and Gauge Rainfall
Authors: Hu Qing Fang , Li Zhe , Wang Yin Tang , Liu Yan Li , Cui Ting Ting
Published: September 2014

Satellite-derived and gauge rainfall data are incompatible spatial data. Although great efforts have been devoted to their combination recently, it is still a complicated issue to be addressed. In this study, the performance of merging satellite and gauge rainfall analyses is examined over a humid region in Southeast China. Using satellite rainfall from TRMM 3B43V7 and ground rain gauge measurements, a geographically weighted regression (GWR) based statistical merging algorithm was proposed to continuously produce monthly rainfall fields at 1-km resolution during the period 2003-2009. Results indicate that the benefits of this rainfall merging approach were remarkable only when the gauge density is lower than one gauge per 1,500 km2, suggesting the information provided by TRMM 3B43V7 is more useful for estimating rainfall fields when the ground measurements are rather sparse.
Sensitivity Analysis of Parameters in HEC-RAS Software
Authors: Li Shuai , Zhang Jian Min , Xu Wei Lin , Wang Yu Rong , Peng Yong , Li Jun Ning , He Xiao Long , Li Pan
Published: September 2014

As for the level of tail-water often rose when the situation of tailrace river changing during the process of construction of hydroelectric power station, one-dimensional mathematical model is used through two procedures to solve this problem. In the first, the sensitivity of three key parameters including roughness, cross-section spacing Δs, starting regulation level and section in the mathematical model were discussed. The results indicate that: (1) Positive relationship between ΔY/Y and n, shows the greater flow rate, the more sensitive of water depth changes to roughness coefficient; (2) The cross-section spacing Δs affect the large flow more obvious than the smaller; (3) The effect of the middle and lower reaches of river are bigger than the upstream. Research results provided guidance of model parameters selection.
Cognitive Calculation on Water Flow of Dongbei Waterway in Middle Reaches of Yangtze River
Authors: Yang Yan Hua , Zhang Ming Jin , Xu Hai Jun
Published: September 2014

Dongbei waterway in the lower reach of Yangtze River includes three waterway: Hukou waterway, Heng waterway and Zhi waterway. The evolvement trend based on the measured data show that the right branch of Xiasanhaozhou is developed and the shallow shoal at the head of Xiasanhaozhou is scoured along with the right branch be rushed and ratio of diversion flow increase which have negative effect on transition shoals. In order to analysis the effect of evolvement trend on the channel conditions of transition shoals, this paper adopt cognitive calculation on water flow of Dongbei waterway using mathematic model. The results show that, the development of right branch of Xiasanhaozhou and the shallow shoal cutting at the head of Xiasanhaozhou decrease velocity of transition sections, decrease the diversion flow of the left branch of Xiasanhaozhou, and increase the diversion flow of the head of Xiasanhaozhou which have negative effect on transition shoals.
Design of a Pressurized Rectangular-Shaped Conduit Using the Rough Model Method (Part 1)
Authors: Achour Bachir
Published: September 2014

The rough model method is successfully used to design a pressurized rectangular shaped conduit characterized by two linear dimensions. In this study, the focus is on the calculation of the horizontal linear dimension of the conduit. In a first step, the method is applied to a referential rough model in order to establish the relationships that govern its hydraulic characteristics. The obtained equations are of the third degree and are easily solved by trigonometric and hyperbolic functions. In a second step, these equations are used to easily deduce the linear dimension sought by introducing a non-dimensional correction factor. Practical example is taken to enable the hydraulic engineer to better understanding the advocated method and to observe the facility with which design of such a geometric profile can be performed. The calculation uses a strict minimum of data measurable in practice, in particular the absolute roughness.
Formula Type of Local Scour Depth on Spur Dike Nose
Authors: Ying Qiang
Published: September 2014

This passage introduces the formation process of scour hole, analyzes the main factors contributed to the local scour hole’s depth and classifies today’s calculation methods of scour depth into three categories. Then, given the conditions where those methods can be applied and drawbacks of those methods, this article also recommends some suggested formula in calculation.
Numerical Simulation of High Speed Water Jet Erosion of Sand Bed Based on SPH
Authors: Ni Fu Sheng , Zhang De Yi , Wang Hui , Gu Lei
Published: September 2014

Water jet technology is widely used in dredging engineering. Since there will be large deformation of sand bed during erosion by water jet, the calculation mesh will be distorted seriously and lead to simulation failure. In order to solve the problem, the Smoothed Particle Hydrodynamics (SPH) method was used to simulate the dynamic process of high speed water jet erosion of sand bed. The simulation process and key techniques were discussed, the effect of water jet velocity and water jet target distance on the depth of eroded pit was studied. The results show that SPH could describe the process intuitively and the evolution of particle velocity field and sand bed pressure field could be shown clearly. The depth of the pit varies with time linearly. The decrease of water jet target distance and the increase of the water jet velocity deepen the eroded pit.
Preliminary Experimental Study of Landslide Generated Waves in the Reservoir
Authors: Ren Kun Jie , Han Ji Bin , Huang Guo Bing , Jiang Zhi Bing
Published: September 2014

Landslide generated waves in the reservoir were investigated in a three-dimension physical model based on the generalized Froude similarity. The tests included the following several influence factors: still water depth, still water width, landslide volume, landslide fall, slide angle. The waves generated process, as a complex solid-air-water phenomena, is composed of landslide entering water, the first wave generation, air-spray group forming, the second wave generation, wave run-up, wave propagation. Empirical equations base on most of experiments of the first maximum wave amplitude, the second maximum wave amplitude, the maximum wave run-up are described by multiple regressions of following dimensionless quantities: the relative slide Froude number, the relative landslide volume, the relative still water wide.
Proposal of a Conceptual Model as Tool for the Hydraulic Design of Vegetated Roof
Authors: Carbone Marco , Principato Francesca , Nigro Gennaro , Piro Patrizia
Published: September 2014

Vegetated roof technique is becoming increasingly popular, particularly in highly urbanized areas, among the Sustainable Urban Drainage Systems (SUDS) for urban stormwater management. Several studies [1,2] have shown that vegetated roofs may significantly reducing the runoff volume and hydrograph peaks, as well as slowing the contribution to the urban drainage network.This study proposes a conceptual model to predict the hydraulic behavior of a full-scale physical model of a vegetated roof. The model idealizes the vegetated roof as a system consisting of three individual components in series. A mass balance equation is applied to each block, taking into account the specific physical phenomena occurring in each module [3]. The model is validated using dataset observed from the monitoring campaign carried out on the prototype of a full-scale vegetated roof.This study aims to provide quantitative information about the hydraulic performance of vegetated roofs, and identify the most sensitive parameters for describing the hydraulic behavior. The results show a good ability of the model to fit the measured data.
The Size Distribution of Carrying Capacity in the Non-Uniform Suspended Load Capacity Calculation Method and its Verification
Authors: Xu Jun Feng
Published: September 2014

The size distribution of carrying capacity as the forefront of current non-equilibrium transportation of non-uniform suspended sediment research was introduced. The nonequilibrium transportation of suspended sediment concept was further studied. The preliminary calculations and verification of the size distributions of carrying capacity and effective bed material under nonequilibrium transportation condition were given after derived by Qiwei Han. The formula is tested by experimental data and the theoretical results are consistent with the measured values.
The Physical Model and the Numerical Model of Flow Pattern Downstream a Flat-Bottomed Sluice
Authors: Hu Cao , Li Yu , Zhang Sheng Song
Published: September 2014

The flow pattern of outflow from flat-bottomed sluice is significant to the design and operation of sluice. In this study, physical model and numerical model were constructed to investigate the flow pattern. First, physical model was setup to obtain the distribution of velocity under the condition of the sluice gate open. Second, numerical model is constructed to simulate the flow pattern. From the physical model and the numerical model, both models are dependable; the results reflect the actual flow situation reliably. In this paper, the combination of numerical model and physical model on flow field can be a reference for the hydraulic design and the operation of the flat-bottomed sluice.
Megacities Land Drainage and Land Runoff Features and Treatment
Authors: Chechevichkin Viktor , Vatin Nikolai
Published: September 2014

The land runoff of major cities is a significant factor in pollution of the hydrosphere. Sorption-filtration treatment technology of large volumes of water runoff most cost-effective, it is as deep purification technology. Their application in the complex composition of runoff from urban areas gives the best results in combination with the technology pre-separation main quantity of suspended solids and emulsified oil products in different kinds of traps and sumps.
Leakage Mechanism of the Wastewater Dam in Metal Mine and its Anti-Seepage Technology
Authors: Zhao Jiang Qian , Ju Hai Yan , Zhang Peng , Liu Shao Lin
Published: September 2014

The acid mine drainage has the widest pollution range and biggest harm degree, which forms the potential corrosion hazards to sewage dams in mental mine. Based on the investigation and analysis of the acid mine drainage, the evolution law influence of physical and mechanical properties and leakage mechanism of sewage dam is revealed under the action of the acid mine drainage. In order to prolong its service life and insure the safe operation of the construction engineering, the program of concrete anti-seepage wall with coal fly ash is adopted, which can improve the impermeability and structure of concrete, enhancing the anti-seepage wall durability under acidic environment, providing the basis of scientific data and technical basis for acid mine water environment of basic construction.
Study on the Effect of Humic Acid Acetamide on the Rheological Properties of Gas-to-Liquid Based Drilling Fluids
Authors: Li Long , Yuan Xu Bo , Ma Cha , Cheng Rong Chao , Yang Yu Ping
Published: September 2014

A new type of humic acid acetamide FLHA was synthesized by chemical modification of humic acid with long chain fatty amine, and the effect of humic acid acetamide on the rheological properties of gas-to-liquid (GTL) based drilling fluids was investigated. The results indicated that FLHA had good capacity of filtration reduction under 150 °C. Moreover, FLHA can improve the stability of GTL-based drilling fluids. As a result, FLHA is an good fluid loss additive for GTL-based drilling fluids, and it can optimizate drilling fluid system formulation to make drilling fluids have good rheological properties, filtration properties and environmental protection function.
Present Situation Evaluation on Scenery Resources of the Canal Water Scenic Park in Linqing
Authors: Zhang Xin , Huang Ji Wen , Chen Hua Wei , Sun Xin Shou
Published: September 2014

The SWOT method was used to evaluate water scenery resources from the strength, weakness, opportunity and threat, according to the resource survey results of nature, human, society, economy, water resources and water projects of the water scenic park,in order to strengthen the construction and management of the canal water scenic park in Linqing. The results show that the current situation of scenery resources is generally good, but there are also many problems, such as the characteristics of tourism products need to be taped etc. Thus some suggestions are put forward for the construction and development of the water scenic park.
Research on the Homogeneous-Grid Spatial Structure of Rural Habitats: A Cast Study of Yishikuli
Authors: Gong Tong Wei , Shi Jin , Zhang Yang , Li Feng
Published: September 2014

The homogeneous-grid spatial structure of rural habitats is a special spatial type in less developed rural areas. The paper analyzed the homogenization distribution characteristics from the aspects of size and density, and analyzed the gridded morphological characteristics from the aspects of space skeleton and land use. The author concludes that economies scale, industrial development, natural conditions and facilities construction are the main driving forces for the formation of this spatial type.
Study on Measures against Urban Construction of Port City Face to DPRK with Uncertain Factor - A Case Study on Ji'an City in JiLin Province
Authors: Li Mei
Published: September 2014

According to trade development characteristics of port city between China and North Korea, the uncertain factors in economic and trade development with North Korea are analyzed in this article. Taking Ji'an city of Jilin as an example, the article analyzes the problems about city economy, urban land use, tourism development during the port construction process in Ji'an city, provides the guiding principles as "flexible plan" for construction of port city facing to North Korea, namely establishing the "321" flexible industrial layout mode, establishing elastic urban land development model with "symbiosis" philosophy, establishing "flexible space structure" of border feature land and proposing the development idea of three principles, two Expansions, one Integration for tour features.
The Ecological Strategies on Development of Rural Communities in Northwest China
Authors: Yu Zhi Chun , Lei Zhen Lin
Published: September 2014

Nowadays faced with opportunities and challenges under a rapid urbanization, it is severe existing situations of rural area in Northwest China. From the village planning to its house construction, we need to follow the ecological and sustainable way, emphasize the application on ecology in architecture, inherit and revolution local history and culture, pass on the indigenous eco-experience and utilize the modern techniques to solve the organic replenishment of the traditional dwelling. To establishing the ecological rural community in Northwest China, that is our goals, push the ecological process of Northwest country forward.
The Research of Evolution of Spatial Morphology of Harbin
Authors: Sun Hong Tao , Zhang Ling Ling , Bai Xiao Wei
Published: September 2014

Harbin is a major city in the north of China,the evolution of spatial morphology is effected by special geographical environment and rich history. Its urban pattern has common features as other waterfront cities in north of China, and also has own uniqueness. The paper starts from the analysis of evolution of spatial morphology,divides the history of Harbin into 3 stages,analyses the evolution and cause of each stage,and proposes the development direction of Harbin to provide reference for the waterfront cities in north of China.
The Study on Problems of Urban Transportation Development Planning - Base on Changchun Case
Authors: Gong Han , Gao Wei
Published: September 2014

The recurring frequency of the transportation congestion has risen up sharply for the last decade in Changchun, both inner town and periphery. The decrease of thetransportation efficiency has become the impediment of urban function. With the introspection of planning strategy logics, the author proposed a series suggestion, that the strategy should based upon the sustainabletargets, that the controlling of the urban traffic needs should be the first principal, and the interacting with urbanspatial frameworkshould be in the consideration in transportation planning.
The Research of Smart Town Construction
Authors: He Shi Hong
Published: September 2014

The smart town construction in China has just started, there is no unified and perfect construction contents, steps and models. Based on the study of smart city and smart town construction home and abroad, This work defines the basic contents and standard basic steps of the smart towns construction in China, and based on the smart city construction model’s home and abroad, through the transplant way, it discusses the basic mode and the problems that we need to pay attention to in the smart town construction.
Study on Subway Public Art Based on Space Atmosphere - A Case Study of Xi'an Subway Public Art and Design
Authors: Sun Jing , Li Zhi Guo
Published: September 2014

Subway as a means of transport is becoming a new gallery space and the flow of culture. Subway public art space is undoubtedly scope to create a visual sense of place and the interior space of the subway culture is the most direct and effective artistic language. This article highlights the importance of urban culture proposed metro public art from space to strengthen workplace awareness, and combines with the ancient capital of Xi'an, as the newly opened subway public art wall case, which analysis on the development dimension of public art.
FA-BP Neural Network-Based Forecast for Railway Passenger Volume
Authors: Li Meng Tian , Ji Xiang Feng , Zhang Jian , Ran Bin
Published: September 2014

The research presents a long-term forecast model based on the use of a back-propagation (BP) neural network. Firstly, a brief overview of the forecast models and BP neural network model is demonstrated. Then the improved BP model based on factor analysis (FA-BP) and algorithmfor solving the model are presented. At last, a numerical case study is shown.As the current statistic yearbook only provides the volume data of Jing-Hu corridor, the notion of economical relation intensityis applied to process the original data. The results show that FA-BP neural network is effective in forecast. The proposed model providesa reference in the forefront field of integrated regional transportation planning.
Modeling and Sensitivity Analysis for Railway Passengers’ Public Transit Mode Choice
Authors: Zhang Jian , Ma Chun Jing , Ji Xiang Feng , Zhong Gang
Published: September 2014

Comprehensive terminal integrates different modes of transport and sharing rates of different traffic modes influence its planning greatly. To determine the sharing rates, it’s necessary to study mode choice probability of passengers. Based on the theory of disaggregate choice, with the survey of mode choices of passengers arriving by rail in Nanjing south railway station, this paper establishes multinomial logit (MNL) model and nest logit (NL) model, considering three types of modes of transport including the subway, regular bus, and taxi. Models are calibrated with SPSS and validated through statistical indicators. Therefore, important factors influencing choice are obtained. The accuracy test results of two kinds of models show that NL model has higher prediction accuracy, and can overcome the shortcomings of traditional logit model’s independent and irrelevant alternatives (IIA). Finally, this paper develops the sensitivity analysis using the NL upper model as an example, and gives the sensitivity physical meaning, namely the development level of taxi.
Optimization Analysis on Urban Transportation Network of Lanzhou
Authors: Pu Han , Ma Cun Rui
Published: September 2014

On the basis of analyzing the model of C space network in Lanzhou, the small world characteristics were found. Combine the main idea of box counting method and weighted network merging mechanism, the evolution mechanism was put forward based on the self-similarity of the network, then the urban transportation network of Lanzhou is optimized by this method and optimization results are obtained.
Study on the Countermeasures to Current Problems in Beijing Subway Transfer Stations
Authors: Hu Ying Yue , Chen Feng , Fang Ji Ping , Gao Yong Xin
Published: September 2014

After classifying the Beijing subway transfer stations into different types, a comprehensive investigation on entire transfer stations of Beijing subway is conducted. According to the transfer station characteristics with respect to interchange form, transfer time and passenger flow volume during rush hours, some problems of Beijing subway transfer stations are analyzed. Then, some suggestions are offered to provide theoretical reference for the planning and operation of subway transfer stations.
The Vulnerability Analysis of Subway System
Authors: Lin Qing , Song Shou Xin
Published: September 2014

In order to ease the tremendous pressure of traffic caused by the rapid development of urbanization, the rapid development of urban rail transportation is of great significance. This paper will explain what is vulnerability of subway system, and the meaning of doing this research. Meanwhile, it also includes to analyze factors which influencing the vulnerability.
Optimal Allocation of Water Resources Based on Multi-Objective Particle Swarm Algorithm and Information Entropy
Authors: Liu Wei Lin , Liu Li Na
Published: September 2014

Water allocation is a very complex problem, involving social, economic, environmental, and political factors. Consequently, it is a multi-objective decision-making problem. This paper presents a multi-objective model for the optimal allocation on multisource water for multiuser under sufficiently considering the harmonious development among economy, society and environment. A multi-objective particle swarm optimization (MOPSO) algorithm is employed to generate a set of Pareto-optimal solutions. At the same time, to facilitate easy implementation for the water allocation operator, information entropy theory is adopted to sort the decision results according to the magnitude of the superiority degrees. As a case study the proposed approach has been applied to the reasonable allocation of water supply and demand in the water-receiving areas of the South-to-North Water Transfer Project in China, in which the maximal benefit of economy, society and environment was regarded as the multi-objectives. The results show that the proposed approach is able to offer the quantifiable benefits or costs among different objectives for the water managers, and is highly professional in making decisions for allocating water among use sectors and different areas.
A Vehicle Dynamic Weighing System Based on Wireless Smart Aggregates
Authors: Yan Shi , Ma Hao Yan , Qi Bao Hui , Sun Hao Peng , Liu Fu Xue
Published: September 2014

Currently, the traffic management technology used in vehicle dynamic weighing is gradually matured. However, in China, the existing technology has not been widely used in practical detection. The main reason is the high cost of the existing weighing system which has to destroy a short road during its construction, at the same time, requires arranging a lot of cables to form a monitoring network. This is not only harmful to vehicular traffic, but also wasteful in manpower and financial resources. This paper develops a wireless smart aggregates array based on the protocol for Zigbee802.15.4 and the passive piezoelectric structural health monitoring (SHM). By measuring the vehicle with various loads, the test is performed to validate the proposed Wireless Smart Aggregates Vehicle Dynamic Weighting System (WSA-VDWS). The experimental results are consistent with the results of actual conditions. The developed system is stable and reliable, which is able to be applied in real-time online tests of vehicle dynamic weighting monitoring.
Research on the Model of Emergency Fire Rescue Vehicle Routing Selection and Resource Allocation
Authors: He Feng , He Rui Chun , Sun Sheng Nan , Chen Jiong Di
Published: September 2014

In order to arrive at the scene of the fire in the shortest time dealing with the accident, considering two fires occurred at the same time, taking optimal allocation of resources at the center of the fire fighting and the least time of driving to fireground as objective functions, based on automobile brake model and two-stage scheduling mechanism, to build the total time optimal model and resource allocation optimization model. Models obtain vehicle shortest transit time and the optimal resource allocation amount, it can effectively solve routing problem of the emergency rescue vehicle, resources shortage also can be solved when many accidents happen at the same time, to avoid the waste of resources and to ease the pressure of maintenance cost.
VISSIM Simulation-Based Traffic Optimization Solution: Case Study in Nanjing, China
Authors: Yang Bin Bin , Zhang Jian , Hu Yong Kai , Wang Hao Miao , Song Lu
Published: September 2014

On the basis of traffic survey, an improved simulation model is established by using the VISSIM to simulate the traffic running operation of the Beijing West Road in Nanjing, China. By considering the evaluation of the real traffic situation, two optimized solutions are proposed to relieve the traffic congestion which is caused by the traffic tidal phenomenon. A simulation model is built, with the help from the two optimized solutions. Data about travel time, queue length, vehicular delay, vehicular stop delay and number of stops are generated. Via analyzing and comparing these significant indicators, the results show that the proposed solution is better than the solution of Green-band Traffic. The VISSIM simulation-based optimization solution in this paper is effective.
Research on Dynamic Route Guidance for an Emergency Vehicle Considering the Intersection Delay
Authors: Chen Shan Shan , Zhao Xin , Sheng Yu
Published: September 2014

For the purpose of assisting emergency vehicles to move, the key is to put forward the application of Vehicle Operation Agent and Road Agent in sections to complete the dynamic route guidance process for an emergency vehicle combined with improved-Dijkstra algorithm. At last, by using Starlogo software and Matlab together, the paper completes the simulation of the emergency vehicle guidance process, to prove the effectiveness of the method.
Driver’s Psychophysical Performance at Urban Tunnel
Authors: Xu Qian , Shao Fei , Guo Tang Yi , Luo Lu Lu
Published: September 2014

The objective of this work is to investigate how driving performance is varied in psychophysical phenomenon in urban tunnel. Twelve drivers participated in the real road experiments study, and they were classified into three groups according to age and gender. In experiments, by using the physiology recording instrument and Tobii Studio eye tracker system, the heart rate (HR) and eye movement, the pupillary change of the drivers at the entrance and exit of urban tunnel were separately investigated. Experimental results indicate that drivers’ performance while driving through an entrance and an exit are highly variable at speed, at HR increasing rate, and pupil diameter increasing rate. Middle-aged females and older-aged males are more sensitive to tunnel environment than middle-aged males. There is non-significant effect of tunnel zone on the visual scanning for all the drivers in this study.
The Analysis of BP Network Traffic Accident Serious Level Model Based on Principal Component
Authors: Lv Yue Jing , Ying Bao Sheng , Zou Li Qiong , Qing Guan Ming , Zhou Xing Lin
Published: September 2014

This paper analyzes the relevant factor which influences the accident severity, and puts forward BP neural network traffic accident serious level model based on principal component analysis, it selects the main causes and accident serious level of 344 traffic accidents in Harbin in 2003 on the main road as the training and binding of the model, make sure that there is a good correspondence between the related main causes and the serious level. The model provides reference for the main control factors in order to determine the serious level of road traffic accidents of Nonlinear Systems.
Comprehensive Benefit Evaluation of Ecological Architecture Based on Fuzzy Comprehensive Evaluation
Authors: Zheng Xuan Xuan , Wang Bing Liang
Published: September 2014

Ecological architecture has become the inevitable trend of building development, evaluation of ecological architecture system also has gradually become the hot issue in the world. This document introduce the development of ecological architecture and the research status of evaluation system, how to use the fuzzy comprehensive evaluation to study the comprehensive benefit of ecological architecture: calculate the result of comprehensive benefit through setting up the index system. This will put forward a train of thought for the benefit evaluation of ecological architecture.
Experimental Study and Numerical Simulation on the Blistering Defect during Thixocasting
Authors: Hu Xiao Gang , Zhang Fan , He You Feng , Midson Stephen , Zhu Qiang
Published: September 2014

Blistering is one of the main surface defects of thixocasting parts after solution treatment. In this paper, experimental study about the influence of plunger velocity on blistering problem was carried out, and the blistering level with various velocities was discussed. In addition, a series of simulation work for filling process were performed to analyse the formation mechanism of blister. The results indicate that the power law cut-off model can reflect the thixotropic characteristics better at shear rate range from 100s-1to 500s-1than Carreau model. Based on power law cut-off (PLCO) model, the filling process simulation reveals the air entrapments were caused by poor venting instead of turbulence, either decreasing the filling speed or modification of the die venting system would improve blistering problem.
Analysis by Micromechanical Modeling on Material Flow under Rapid Compression in the Semi-Solid State
Authors: Neag Adriana , Favier Véronique , Bigot Régis , Atkinson Helen V.
Published: September 2014

Different types of semi-solid processing are used to produce a variety of components. In this context, the use of FE simulations to obtain the filling of the dies and to optimize the semi-solid processing is clearly of a great interest. To carry it out properly in an isothermal case, the semi-solid flow into the die and friction phenomena have to be correctly described. In addition, comparisons between experiments and simulations are needed to assess the reliability of the modeling and to improve the understanding of the processing. In situ visualization of the semi-solid flow during processing is complex since the dies are closed and opaque. One of the main recent work with transparent glass sided dies to film die filling is that by Atkinson and Ward (2006). The purpose of this work is to compare numerical simulations to these experiments. Numerical simulations were performed with the solid mechanics-based software FORGE©. A micromechanical model accounting for the liquid and solid behaviour and their spatial distribution within the material (Favier et al, 2009) was used. The model parameters were identified using rapid compression tests on the A357 aluminium alloy (Favier and Atkinson, 2011). The slurry temperature corresponds to 0.5 solid fraction. Comparisons were focused on the flow behaviour. The impact of the presence of an obstacle and of the shape of the obstacle was investigated. The numerical simulations reproduced quite well the flow behaviour for the case with and without central obstacle. However, the change in flow due to an increase of the ram speed from 250 mm/s to 1000 mm/s is not captured.
Modelling of Extrusion Process for Aluminium A356 Alloy
Authors: Simlandi Sudip , Barman Nilkanta , Chattaopadhyay Himadri
Published: September 2014

In the present work, a model is developed to study extrusion process of A356 alloy in semi-solid state. The distinct rheology of the semisolid alloy reduces energy necessity during extrusion process. Accordingly, a proper rheological model of the alloy is considered in the model towards a detailed study of the process. A combination of analytical and numerical solutions is considered for solving the governing equations. The work finally predicts distribution of velocity and shear stress of the alloy under shear in the considered domain. It also predicts the energy requirement during the extrusion process. It is demonstrated that for semisolid extrusion, reasonably less energy is required as compared to a conventional extrusion process Keywords: Extrusion, semi-solid alloy, apparent viscosity, extrusion power
Deformation Characteristics and Mechanism of Martensitic Stainless Steel during Thixoforming
Authors: Song Ren Bo , Li Ya Ping , Wang Yong Jin , Zhao Cui Qing
Published: September 2014

Semi-solid billet of 9Cr18 martensitic stainless steel with globular grains was made by a wavelike sloping plate experimental device, and hot compression tests were carried out in the semi-solid state of 9Cr18 semi-solid billet on Gleeble-1500 thermal simulation testing machine at the temperatures of 1250°C ~1300°C and the strain rates of 0.1 s-1~5.0 s-1to investigate the effects of thixoforming parameters on its deformation characteristics and mechanism. According to the true stress-strain curves obtained from the test, the influence of deformation temperature and strain rate on 9Cr18 semi-solid billet deformation resistance was investigated, and the deformation resistance model of specimen with coexistence of solid and liquid phases was established. In this paper, it was found that deformation mechanism changed because of different deformation temperature and strain rate. Dynamic recrystallization occured at 1250°C in different phases separately. So that big fine recrystallized grains were achieved at the soft primary austenite region while small recrystallized grains were achieved at the hard solidified liquid region. The melted metal would be extruded from the centre of the specimen to the free surface completely when the temperature was higher than 1275°C. And then specimen became FGM (functionally graded materials), with phases and properties graded distribution perpendicular to the stress direction. When thixoforming temperature reached 1300 °C, martensitic transformation occurred after rapid cooling. The mathematics models of the relation between stress and temperatures, fraction of solid, deformation rates and deformation degree of 9Cr18 semi-solid billet were regressed and established based on the dates attained from the compression deformation experiments. The R value was 0.991, and the RMSE value was 3.57.