bluuebunny/crossref_metadata_2025 huggingface dataset:
An Investigation and Analysis of Rural Water Conservancy Construction Based on the Cognition of Environmental Protection in Rural Areas
Authors: Nie Ben Wu , Wang Jian Ping , Liao Xue Lian
Published: September 2013

Rural water conservancy construction and new rural construction are the most fundamental conditions which insure the blossoming agriculture ,and the most basic measures of environmental protection .This research aims at exploring factors influencing the development of rural water conservancy in the cognitive perspective of rural environmental protection , primarily through surveying farmers from nine counties of Hubei, by collecting valid data samples and applying them on SPSS software. Through comparative and correlation analysis, we find out that different cognitions of rural water conservancy construction exists in farmers from different regions , which provides countermeasures for future rural water conservancy construction and environmental protection.
Analysis on the Ecological Wisdom of Historical and Cultural Village in the Huanghe Valley
Authors: Wen Fang Fang , Li Ling , Ma Jing
Published: September 2013

The historic villages which located in the Huanghe valley are cultural symbols in this area and crystals of wisdom of local ancestors.It contains rich ideas about ecology and architecture.In the basis of field survey of these villages in Shaanxi and Shanxi,this paper mainly analyze the ecological culture orientation and ecological wisdom of these villages from aspects of plans,buildings,and convictions;and then make the concept of ecological culture well-known and benefit to the construction of New Villages in Huanghe valley.
Research on Electroplating Wastewater Treatment and Operation Effect in Jiangmen
Authors: Yang Jian She , Li Lian Jun
Published: September 2013

In this paper, I use the ion exchange method for treatment of electroplating heavy metal ions in waste water and I also use a single-stage rinsing and resin enrichment combined form of management, whose wastewater contains Cu2+, Cr6+and Ni2+. The process can ensure the cleaning quality, good treatment effect, which recovers the energy of nickel sulfate and copper sulfate and its returning rate reaches as 90%. That achieved the goal without discharge of nickel, copper, environment and economic benefits.
Electroplating wastewater composition is very complicated, in addition to cyanide (CN-) wastewater and effluent. Wastewater with heavy metal electroplating is the potential harmful categories in the industry. According to the heavy metal wastewater containing heavy metal element classification, it can generally be divided into Cr containing nickel wastewater, wastewater containing cadmium (Ni), (Cd) wastewater, wastewater containing copper (Cu), zinc(Zn), gold(Au) from wastewater, wastewater containing silver(Ag). Electroplating wastewater treatment is widespread attention at home and abroad, which has various developed management technology and management of toxic to nontoxic, changing harmful wastewater into harmless water. Then we can recover those precious metals. Water recycling and other measures are helpful to eliminate and reduce the emission of heavy metals. With the rapid development of electroplating industry and increasing requirements of environmental protection, current electroplating wastewater treatment has begun to enter into the clean production process. According to total circular economy integration phase, the recycling of resources is the main development direction [1].
Research on the Environmental Problems and Strategies about Real Estate Development
Authors: Xu Li Yuan
Published: September 2013

Real estate is the largest industry that consumes resources, energy resources, land. Such as air pollution, water pollution, building and living garbage pollution, noise pollution, light pollution, they are seriously impact on the residents' living environment quality, and bring great challenges to the citizen's environmental rights. we should uphold these Principles Including of precautionary principlepriority to the interests of citizens livingConsumer Protection and Balance of interests. When we do it, the harmonious development of man and nature will come true.
A Preliminary Study on the Development of Ecological-Cultural Industry
Authors: Deng Xian Chao , Yuan Ya Ping
Published: September 2013

Ecological-cultural industry is low-carbon creative industry guided by ecological culture, which is characterized by creative industry, green ecology, economic benefits, blending development. The development of ecological-cultural industry is the inner requirement to implement the scientific outlook on development, is the objective demand of the construction of ecological culture, is an important manifestation of the revival of the cultural industry, and is the main way to enhance ecological-cultural soft power. To speed up the development of ecological-cultural industry, we should vigorously promote the concept of ecological civilization, strengthen policy support and guidance, rely on scientific and technological advancements, conduct international exchanges and cooperation, and pay attention to the training and introduction of cultural talents.
The report of the 18th National Congress of the Communist Party of China discusses systematically "propel ecological civilization construction vigorously". For the first time, put ecological civilization construction, economic construction, political construction, cultural construction and social construction together to form the "five-in-one" overall layout of construction of socialism with Chinese characteristics as a separate chapter.[1] Ecological culture is an important part of ecological civilization, is an advanced culture which inherits of the traditional Chinese outstanding culture and ecological wisdom, fuses modern civilized achievements and spirits of the times, and promotes harmonious development of man and nature. Ecological-cultural industry is a combination of ecological concept and cultural industry, is an important part of constructing ecological civilization, and is a new trend of global economic and social development.
Prospect of Sludge Treatment Technology in Tianjin
Authors: Han Dong Gang , Li Chao , Zhao Xin Hua
Published: September 2013

As the sewage treatment keeps increasing every year, the sludge output from municipal sewage plant increases dramatically. The emission of the sludge without proper treatment pollutes the water and the atmosphere again. It not only slows down the effectiveness of sewage treatment systems, but also threatens the environment and humans activity. In this paper, the current situation of sludge treatment was explored. Based on the systematic research on sludge treatment of municipal sewage plants in Tianjin, some current problems were pointed out. The advices about sludge treatment of municipal sewage plant in Tianjin are outlined.
Improvement of Oxygen Releasing Compounds Amended with Modified Oil Sludge
Authors: Liu Yu Long , Liu Si Min , Yang Zheng , Fan Jun Xin , Deng Hao
Published: September 2013

The effect of modified oil sludge (MOS), CaO2and bentonite amounts on the performance of oxygen releasing compounds (ORCs) has been investigated. Results showed that MOS was the primary factor to affect the ORCs performance. Increasing the amount of MOS resulted in extension of the lifetime of ORC; instead, decreasing it would obtain relatively large stable oxygen release rate. Moreover, addition of MOS made significant decrease in initial oxygen release rate. Compared with ORCs without MOS, ORCs with 5%, 10%, 15% and 20% MOS had initial oxygen release rates reduced by 15%, 40%, 65% and 65%, respectively. Another characteristic of the MOS was also found. It proved that precipitates generating from oxygen-releasing process, such as calcium and magnesium minerals, could hardly accumulate on the surface of ORC. Addition of MOS reduced the clogging of oxygen diffusion channels caused by the mineral deposition on the surface of ORC; thus, extended the lifetime. The ORC that replaced bentonite with MOS was economical and environment-friendly. One available ORC contained CaO2(30%), MOS (5%), cement (30%) and sand (35%); and its stable oxygen release rate was 0.146 g [O2]/(kg [OR·d) and the lifetime was 187 d.
Assessing Estrogenic Activities of Selected Endocrine Disrupting Chemicals and their Combination Effects
Authors: Shao Xiao Ling , Zhong Wen Qi , Ma Xiao Yan , Gao Ang , Wu Xiang Yang , Ma Jun
Published: September 2013

Yeast two-hybrid system was used to investigate the estrogenic activities of 13 kinds of representative endocrine disrupting chemicals (EDCs) and their combinary effects. Results show that the order of estrogenic potencies for these chemicals is: 17α-ethynylestradiol>diethylstilbestrol >17β-estradiol>estrone>estriol>branchedp-nonylphenol>4-t-octylphenol>bisphenol A>diethyl phthalate>4-n-nonylphenol>di-(2-ethylhexyl) phthalate>dibutyl phthalate>dimethyl phthalate. The mixture effects of multiple EDCs were compared to those obtained from individual chemicals, using the model of concentration addition. Results reveal that the estrogenicities of multicomponent mixtures of more than three (including three) of EDCs follow antagonistic effects, while there is no definite conclusion for binary systems. The less than additive effects were also confirmed in the spiked experiments conducted in the extracts of real water samples.
Reservoir Geological Model of Reef-Bank Carbonate Rocks of Ordavician in Tazhong Area, Tarim Basin, NW China
Authors: Qu Hai Zhou , Wang Zhen Yu , Wang Xi , Fan Kun Yu , Zhang Yun Feng
Published: September 2013

The reservoir of Lianglitage formaton mainly distribute in the Liang 1~Liang 2 section, and slight amount distribute in Liang 3 section. The microfacies are abundant and, and they apparently affect the development of the reservoir. Based on the geologic feature, we propound the concept:"microfacies combination". It is composed by two or several microfacies, and each microfacies have similar reservoir conditions. Using the seismic facies interpretation, combining the methods of deterministic modeling and stochastic modeling, the "microfacies combination" model is established. Appling the method that "microfacies combination" controls the modeling course, taking the wave impedance which has good corresponding relationship with reservoir as secondary variable, small layer application of stochastic modeling method based on the porosity model is finally established through the stochastic modeling method layer and layer. Considering the crack influence on permeability, the first step is establishing the fracture distribution model, then the permeability model is established taking the fracture distribution as secondary variable, which improves the practicability of permeability model.
The Distribution and Enrichment of Heavy Metals in River Crab
Authors: Jiang Yan , Zang Jian , Wu Jun Rui , Yue Xi Qing
Published: September 2013

The concentrations of eight heavy metals were determined in the gills, muscles and livers of River crab that lives around the area named Panjin, located in Liaoning province of China. The results showed that the distribution and enrichment of heavy metals varied significantly in different crab tissues. The concentrations of Cr, Ni and Cu were highest in the gills. The concentrations of As and Cd were similar in the muscles and livers tissues. No significant difference in the concentrations of Hg and Pb was found among tissues. The enhanced accumulation of most metals in the gills suggested that the metals mostly accumulated in river crab via the respiration pathway rather than the uptake of food.
The Impact Study of Hexavalent Chromium on the Environmental Safety of the Drinking Water Source from the Jiangsu Section of the Yangtze River Basin
Authors: Sun Xiao Xiao , Liu Ning , Fan Hai Yan , Li Wen Qian , Zhou Yun Xin
Published: September 2013

In this paper, a health risk model was used to calculate and analyze the water quality monitoring data of the Yangtze River Basin from 2007 to 2009. The data analysis leads to a conclusion that hexavalent chromium is a major health risk factor of those drinking water sources in the Jiangsu section of the Yangtze River basin. Based on the health risk analysis, an environment strategy analysis model and the Dynamic Actor Network Analysis (DANA) software were used to study the optimal strategy on the risk management of chromium contamination of those drinking water sources in the Jiangsu Section of the Yangtze River basin.
Application of Research of the Relationship between Ground Stress and Fractures in the Trajectory Optimization of Horizontal Wells
Authors: Zhang Hui , Ou Fang Jun , Yin Guo Qing , Yi Jing Bing , Yuan Fang , Xie Bing , Li Chao , Zhao Wei
Published: September 2013

From the perspective of improving single well production and wellbore stability, stress field and natural fractures are the factors which have to be taken into account in the development of horizontal wells of the complex carbonate oil and gas fields in Kuqa piedmont and platform-basin transitional area. On the one hand, as the present stress field is the key factor to control fracture permeability, the trajectory of horizontal wells should pass through fracture system with good permeability as much as possible, being conducive to the effective stimulation of the reservoir. On the other hand, at the state of specific stress, the stability of well trajectory varies with directions. Therefore, before drilling horizontal wells, it is necessary to fully analyze the quantitative relationship between the present stress state and natural fracture occurrence and mechanical characteristics, etc., to optimize and determine a well trajectory conducive to high yield and wellbore stability. In this study, firstly, the fundamental principles for evaluating the present stress state and analyzing the relationship between the stress and fractures were described. Then based on the relationship between them, the occurrence and longitudinal positions of permeability fractures were analyzed. Apart from that, the stability index and fracture opening pressure distribution of wells in different directions at given stress state and fracture system were also analyzed. Finally, the optimization scheme for trajectory of horizontal wells under complex conditions was discussed with three aspects taken into account, i.e. best drilling in permeability fractures, wellbore stability and drilled reservoir stimulation.
Characteristics and Development Ways of Green Building Materials
Authors: Jiang Wei Qin , Zhang Xuan
Published: September 2013

The characteristics of green building materials is summarized and analyzed, the development ways of green building materials is analyzed and summarized on the demand of green building materials in China at the present.
Research of Air Pollution Dispersion Visualization Based on GPU and Volume Rendering
Authors: Wang Lei
Published: September 2013

To address the air pollution diffusing problem, a visualization algorithm based on fluid diffusion physical model and volume rendering is proposed to simulate the diffusion process epically for the urgent pollution accidents. The diffusion model is based on the simplified heat diffusion equation and the basic vortex constraint. The texture mapping based volume rendering method is adapted to handle the visualization algorithm. In addition, the render process adopts the GPU to implement the real-time visualization rendering.
Valley Economy Regionalization Based on Geographical Information System and Statistical Analysis: A Case of Beijing Mountainous Area
Authors: He Feng , Li Hong , Zhou Lian Di , Sun Dan Feng
Published: September 2013

This paper discussed the regionalization of valley economy of the mountainous area of Beijing. 19 indexes of natural ecological and socio-economic systems were covered,and valley were considered as complete individual taxons. The mountainous area of Beijing was divided into 4 valley economic regions : Shallow mountain, plain grain and vegetable production area (I), Plain premier, special and high quality varieties planting area (II), Remote mountains forest conservation zone (III), Suburban Hilly Area and Remote Mountains ,water source protection and forestry product planting area (IV) valley economic regions by Principal Component Analysis (PCA) and Cluster Analysis (CA) combining with Geographical Information System (GIS) platform. These 4 regions were further divided into 12 valley economic types. The conclusion analyzed the regionalization and methodological framework for large scale areas like the mountainous area of Beijing. Such practice could be generalized to develop appropriate regional valley economic theory for large scale areas.
Composite of Flake-Shape Sendust Particles and its Application on Patch Antenna
Authors: Guan Meng Ran , Wang Xin , Zhang Hui Bin , Deng Long Jiang , Xie Jian Liang
Published: September 2013

Flake-shape Sendust particles with high microwave magnetic permeability and permittivity were prepared with the method of wet ball milling, and then mixed with the polymer to get a sheet-type composite as an effective EMW absorber. It was found that the composite has a very high shape factor owing to the flaky Sendust particles, which can break through the traditional Snoeks limit, and achieve a high effective magnetic permeability. HFSS simulation results show the sheet-type composite can be used on the patch antenna for improving the front-to-back ratio of the hand-held patch antenna and reducing the EMW pollution around antenna operators.
Research on Risk Assessment of Alien Species Based on Group AHP
Authors: Dai Xiao Peng , Li Dong Hui
Published: September 2013

Alien biological disaster risk assessment is a complicated system engineering. Group decision making method was adopted to determine the alien biological disaster risk assessment index weight. We use group AHP to determine the weight, constructe corresponding judgment matrix of the assessment indexes by experts, calculate the similarity of experts according to the judgment matrix, and then determine the alien biological disaster risk assessment weights through experts weight and the judgment matrix.
Predicting Protein Subcellular Localization Using the Algorithm of Increment of Diversity Combined with Weighted K-Nearest Neighbor
Authors: Wu Ze Yue , Chen Yue Hui
Published: September 2013

Protein subcellular localization is an important research field of bioinformatics. In this paper, we use the algorithm of the increment of diversity combined with weighted K nearest neighbor to predict protein in SNL6 which has six subcelluar localizations and SNL9 which has nine subcelluar localizations. We use the increment of diversity to extract diversity finite coefficient as new features of proteins. And the basic classifier is weighted K-nearest neighbor. The prediction ability was evaluated by 5-jackknife cross-validation. Its predicted result is 83.3% for SNL6 and 87.6 % for SNL9. By comparing its results with other methods, it indicates the new approach is feasible and effective.
A Virtual Reality Based 3D Simulation Modeling of Ethylene Cracking Plant
Authors: Tian Chun Yao , Li Guo You
Published: September 2013

Using virtual reality computer simulation technology, by researching of the ethylene production process equipment and production process, Ethylene cracking plant modeling and simulation training system development were completed. Ethylene cracking device 3D modeling development scheme and process were introduced, which include the use of 3DMAX software for 3D modeling design, combined with the virtual reality software realization of human-computer interactive function design. Based on Virtual reality technology, 3D simulation system of ethylene plant was realized.
A Modeling of Vinyl Acetate Synthesis Process Based on Genetic Algorithm Optimization Neural Network
Authors: Meng Hua , Zhu Jie , Li Ming Yu
Published: September 2013

A chemical plant in vinyl acetate synthesis reaction as the object of study, based on site data collection and mechanism analysis to determine the auxiliary variables on the basis of on-site data processing, through a combination of genetic algorithms and neural network combined to build a synthetic reaction model. The genetic algorithm is introduced to take advantage of its good global search capability to reduce the risk of limited local optimal solution. At the same time, according to the characteristics of the neural network algorithm to avoid that training is too slow, resulting in not conducive to practical application. For this optimized BP Neural Network Based on Self-adapted Genetic Algorithm, by comparing the simulation data obtained by the instance of the digital signal proved that this method has better prospects than traditional neural network algorithm.
Corrosion Behavior of Rebar HPB235 in NaCl Solution
Authors: Wang Ying
Published: September 2013

The corrosion behavior of rebar HPB235 in 1.5wt.% NaCl solution was studied and its mechanical properties were tested before and after corrosion. The results showed that, with corrosion time increasing from 240h to 720h, the corrosion rate increases and the corrosion becomes heavier and heavier. After 720h, the yield strength, tensile strength and elongation are decreased by different extent.
Property Research of Concrete Mixed with Flyash
Authors: Wen He
Published: September 2013

Flyash is the ash collected from chimney of coal-fired power plant. According to statistics, 70% of coal production in our country is used for thermal power generation. One ton of flyash would be produced as long as power plant uses 4 tons of coal. Annual emission of flyash has surpassed 100 million tons. It is predicted that it may be 150 to 260 million tons per year up until Year 2000 to Year 2013. Huge number of emission of flyash covers a mass of farmlands and water resources. Ash disposal area of thermal power plant cannot afford the increasing number of flyash and its storage capacity is in an emergency in which ash disposal area is being extended or newly constructed with a massive amount of money. Therefore effective, universal and vast use of flyash is of profound significance for reducing the environment load and saving limited construction fund. This paper researches the beneficial effects of flyash on concrete property.
Microstructure and Properties of Alloys with Equal Atomic Principal Components
Authors: Wang Yan Ping , Zhuang Yu , Li Jian Chen
Published: September 2013

Four high-entropy alloys are prepared by an arc furnace under argon atmosphere. The microstructure and the properties of the alloys are investigated. The results show that NiCrCuCoFe alloy consists of a single FCC solid solution. When Al presents in the alloys, the microstructures of the alloys change to a BCC+ FCC solid solution. It is indicated that Al element promotes the formation of BCC solid solution, and Si and Mn promote the formation of complicated compounds. The hardness of alloys with BCC structure is higher than that of the alloys with FCC structure. The complicated compounds are formed, the hardness increases further. The highest hardness of the alloys reaches 882 HV due to the strengthening of the second phase precipitation.
Dynamic Test of Bird Strike on a Flat Plate Made from LY-12 Aluminium
Authors: Liu Jun , Zhang Zheng Li
Published: September 2013

Tests of bird strike have been carried out on plate made from LY-12 Aluminium. The test was down with the projectile impacting the target perpendicularly at velocity of 40m/s, 80m/s, 120m/s respectively. The displacement-time history curves and strain-time history curves of on LY-12 Aluminium plate were measured. The good agreement of the results between two specimens in one group indicated that the results tested in the presnet paper are reliable. The dynamic response of the plate and damage modes of the bird influenced by striking velocity were analyzed. The peak value of the displacement linear enlarged with the increasing of the striking velocity. The test results in the present paper provided valuable data for aircraft design impacted by bird, and also provided abundant test datas for the numerical simulation model applied in bird striking.
Effect of Hydrothermal Reaction Conditions on the Sizes and Morphologies of ZnO Nanorods
Authors: Zhang Jian Jiao , Yue Hong Yan , Guo Er Jun , Wang Li Ping , Zhang Chun Yu , Chang Jing , Gao Xin
Published: September 2013

The influence factors of hydrothermal treatment on the formation process of ZnO nanorods are investigated involving with hydrothermal temperature, time and precursor concentration. The as-obtained products were characterized by Scanning Electron microscope (SEM) and X-ray diffraction (XRD), respectively. XRD result indicates that the obtained ZnO nanorods are high-quality single crystals. SEM results indicate that both the diameter and the length of ZnO nanorods increase with increasing the hydrothermal time and temperature. The precursor concentration prominently determines the morphologies of ZnO nanostructure from initial particle morphology to rod-like, and to final slice-like morphology.
The Analysis and Research on the Coating and Drying Method of Electrode of the Li-Ion Power Battery
Authors: Han Liang , Wang Shen Wang , Xiao Feng
Published: September 2013

The green environmental Li-ion power battery becomes the research heat spot of new energy technique and gets people's more and more attentions. This article overviews the process of coating technique of the Li-ion power battery, and the drying technique of Li-ion power battery electrode has a great influence on the Li-ion power battery performance. After analyzing the principle and merits and demerits of various dry methods of Li-ion power battery electrode, the project decides to apply hot-wind of circulating and shock drying method to dry Li-ion power battery electrode. The method has already successfully applied to practice production and has obtained a good economic efficiency for enterprise.
A Study on Electrode Coating Technology of the Li-Ion Power Battery
Authors: Han Liang , Zhou Yun Fu , Xiao Feng
Published: September 2013

Li-ion power battery is one of the key technology for electric vehicle and the most important technology for the producing the Li-ion power battery is coating. At present, the ways of Li-ion power battery coating mainly are the roller coating and the slot extrusion coating. As the roller coating technology is the proven technique and the equipment is simpler, it is a better choice. The key technology of the roller coating is ensuring thickness uniformity and accuracy of the battery electrode. According to the production sample data analysis of the roller coating device, the coating machine we developed successfully achieved the required technical indicators.
A Purchase and Sell Model in Distribution Market Considering Risk
Authors: Xu Xiang Bo , Xu Chao
Published: September 2013

In distribution market, because there are a lot of uncertainty factors such as price and load, so it is a big problem to balance benefit and risk for generation and distribution companies. Since they are both inclined to avoid the market risk, in order to make the most profit for both companies, a purchase and sell model in distribution market based on contract is proposed in this paper. And a power repurchase term is added in the contract to avoid the risk incurred by load fluctuation. Using CVaR(conditional risk at value) as the risk measuring criterion, a two-layer schedule model is set up to simulate the sale and purchase behaviors of generation and distribution companies. And the optimal power sale price for generation company and optimal power purchase quantity for distribution company are calculated by this model. As the case shows, by setting the different risk level, their market characteristics and relationship also change but always follow the risk avoiding rule. So the model can reduce the risk in distribution market for both companies under certain conditions.
The Optimum Layout Research Based on the Calculation of Intelligent Automatic
Authors: Pan Feng , Lv Ping
Published: September 2013

Computational intelligent algorithm in modern life, more and more extensive application in engineering practice, is mainly used to solve the automatic layout optimization problems, the research on it has important significance. This paper mainly studies intelligent computing algorithm in automatic layout optimization problem in the application, intelligent computation algorithm contains more categories, such as genetic algorithm, ant colony algorithm, simulated annealing algorithm, the algorithm in solving automatic optimum layout problem, have its distinctive place.
A Quantization Method for Customers' Fuzzy Demand in BOM Product Matching
Authors: Sun Peng , Chen Wu , Bi Jia , Wang Chong , Xiong Guang Cai
Published: September 2013

In BOM product matching, there will be several product solutions based on the matching mechanism owing to the fuzziness and diversity of the customers needs. To select the optimal BOM through the matching process, a quantization method, which evaluates the product solutions according to customers intuitive estimate, is proposed. Customers needs are consisted by many parameters, and each parameter has several values. First, initialize the satisfaction level of every parameter value in the requirements through customers intuitive assessment. Second, as to a parameter, get the difference of satisfaction level of each parameter value by pairwise comparison. Third, revise the satisfaction level by the difference got by the second step. Other parameters are processed by the same method. Then, the satisfaction level of product BOM is calculated by the weighted average of the satisfaction levels of its constituent parameters. In this way, the BOM that best meets the customers requirements can be found out. The feasibility of the method is finally verified through an empirical study. This method can also be used in some other situations that contain fuzzy concept quantization.
Analysis on Critical Factors for PDM Success Implementation in Chinese Tobacco Industry Enterprise
Authors: Yong Cen , Wang Hong Lv
Published: September 2013

Product data management (PDM) has been widely used to represent an advanced management ideas and methods, to bring significant changes to the enterprise product management. In this paper, describes the core idea of the PDM system and the challenges for the implementation in tobacco industry enterprise. Then in accordance with the implementation of PDM system, analysis and summarizes the critical factors affecting the implementation of the project both in management and technology aspects for tobacco industry enterprise, and to provide help for the enterprises follow-up the implementation of PDM system.
The Knowledge Management of University Teachers Based on Information Technology
Authors: Gao Yu Jie
Published: September 2013

Teachers' knowledge management is one of the main forms of school knowledge management, is to improve the level of teaching and teacher professional development strategy. This paper explains the meaning of knowledge management, points out the importance of the development of knowledge management of university teachers, reveals the present situation of college teachers' knowledge management at the present stage at the same time, gives the countermeasures to solve this situation.
Design of Urban Vehicle Dynamic and Real-Time Navigation System Based on WSNs, GPS, and GPRS Techniques
Authors: Li Cheng Lin , Jiang Zhi Yong
Published: September 2013

Currently, the traffic congestion is a significant problem encountered in urban development, which should be resolved depending primarily on the management and deployment under the circumstance that road construction isn't able to keep the pace of automobile growth. WSNs (Wireless sensor networks), made up of numerous sensor nodes, form a multi-hop and self-organizing cellular system by wireless communication, which can realize real-time monitoring and collecting environmental information by cooperation. In this paper, a design of real-time and dynamic city vehicle navigation system is presented based on WSNs, GPS(Global Positioning System), and GPRS(General Packet Radio Service) techniques..
Numerical Simulation of Instantaneous Heat Transfer in Reciprocating Internal Combustion Engines
Authors: Yang Yi Lung , Chu Po Chang
Published: September 2013

This study provides a detailed instantaneous heat transfer solution in a cylinder during a motored cycle. The piston-cylinder assembly is modeled by a two-dimensional cavity with a sinusoidal moving wall. A high order differential algorithm is used to solve the unsteady compressible Navier-Stokes equations. The order of differencing is raised progressively from the walls toward the center of the cylinder, enabling oscillation free and accurate calculation on a very coarse grid. The numerical fluxes are integrated based on the dual-time stepping of the preconditioned matrix with a third-order Runge-Kutta scheme. The absolute pressure is determined by enforcing the global mass conservation for each grid. The predicted results of the absolute pressure, temperature, and velocity components of the fluid inside the cylinder at any instant during the start-up and the periodically stable periods are compared well with the results given in the literature.
Modeling and Characteristics Research of Proportional-Valve Hydraulic Power Steering of Commercial Vehicle
Authors: Geng Guo Qing , Jiang Hao Bin , Dong Jia Yin , Jiang Tao , Liu Tao
Published: September 2013

Dynamics model of mechanical system and hydraulic system inclued electro-hydraulic proportional valve of Proportional-Valve Hydraulic Power Steering were established.and simulation model of assisted characteristic of PVHPS system was build .Response characteristic of proportional valve bypass flow was analyzed at different speed, and higher of the speed, greater of the flow in the bypass flow is . Steering wheel torque increases gradually as vehicle speed increases at the same wheel angle, and driver's better steering road feeling can be ensured. As wheel steering torque increases, assisted oil pressure increases and higher the speed is , slowly oil pressure increases, and assisted oil pressure increases quickly at low-speed steering condition, and increases slowly at high-speed condition,which meet the requirement of low-speed steering agility and high-speed road feeling.
Simulation and Optimization of FSAE Racing Suspension
Authors: Ren Dian Bo , Fan Xue Mei , Wang Jian Feng , Zhang Yong Qiang
Published: September 2013

In this paper, kinematics analysis software ADAMS/Car was used to establish the FSAE car racing double wishbone independent front suspension simulation model, kinematics simulation analysis has been used to get the wheel beats of each parameters variation. For the simulation results, part of the suspension of the hard points position have been optimized by ADAMS/Insight module, to improve the characteristics of the suspension movement.
Fuzzy Reliability Allocation of CNC Grinding Machine Tools
Authors: Fan Jin Wei , Liu Yong Jun , Wang Xiao Feng
Published: September 2013

Reliability allocation influence factors of CNC grinding machine tools are mostly uncertain and the fuzzy method is one powerful tool for uncertain question. The reliability allocation influence factors were analyzed and the subsystems were divided of CNC grinding machine tools. Reliability allocation weight calculation method by fuzzy mathematics is proposed and the reliability is allocated to subsystem of CNC grinding machine tools by given condition. Fuzzy reliability allocation method considering various factors is practical, accurate and it can be used in concept design of CNC grinding machine tools.
Co-Simulation Study on Over-Running Load Balance in Cabin Door Hydromechanical Drive System
Authors: Zhou Yi Hao , Qi Xiao Ye
Published: September 2013

Co-simulation based on LMS Virtual.Lab Motion and Imagine.Lab AMESim was used on aircraft cabin door hydromechanical drive system design. By analysis of 1-D hydraulic model and 3-D mechanism model co-simulation, we draw the conclusion that over-running load accounts for hydraulic motor over speed. To improve hydraulic system, the one-way throttle valve was employed to balance the over-running load according to the co-simulation results. Subsequently, the co-simulation outcome showed the improved-designed hydraulic system controlled the over-running load more effectively. Therefore, a convenient, reliable and accurate method of hydraulic system based on over-running load balance was available.
Reliability Analysis of Dynamical Strength for Crank-Rocker Mechanism Based on Assur-Group Method
Authors: Zhang Chun Yi , Liu Jing Ya , Bai Guang Chen , Hao Guang Ping
Published: September 2013

In order to analyze dynamical strength reliability of mechanism, in taking the component section sizes, the material strength, the material density and acceleration of gravity as the random variables, and basing on the movement analysis and the dynamical analysis while taking the Assur-Group as the unit, the method of dynamical strength reliability analysis for the crank-rocker mechanism was established. The example was analyzed with using Monte Carlo (MC) method. The result indicates that computing speed of this method is high, precision of this method is high, and it has good universal property. It can be used in scientific research and the engineering practice.
Modeling and Simulation for Overhead Hoist Transporter System in Computer Integrated Manufacturing; A Case Study on the Food Processing Business
Authors: Liu Yu Chuan , Yang Shih Ming , Chuang Chun Yung
Published: September 2013

Computer integrated manufacturing, CIM, has attracted many interests both in academic research and practical implementation. Design and implementation of a CIM project involves the massive modeling, simulation, and verification of production operations, machines, and operators. Overhead hoist transporter, OHT, is one of the effective tools for the automated material handling system that often applied in CIM projects to ultimate the utilization of footprint of a factory. This paper presents a case study for the OHT system design in a CIM project for automated food processing production line. The effectiveness of the number of OHTs installed for the production line and the proper operation scenarios for different production planning are studied. Modeling and simulation results are performed to suggest an efficient OHT system design for the CIM project.
A Visual EFSM Modeling System for Protocol Testing
Authors: Yang Guang Hui , Shu Ting , Lai Sien , Xu Dong Xiang
Published: September 2013

An Extended Finite State Machine (EFSM) is one of the most popular models used in protocol testing field. A specific graphical EFSM model consists of two parts: state elements and transition elements. This paper presents a method for building a visual EFSM modeling system (VEMS), which is used to construct visual protocol EFSM models for protocol testing. VEMS consists of two main modules. One is the modeling module and the other is the model information analysis module. The function of our system can satisfy the requirements to build a visual EFSM model in protocol testing. Specially, users can modify the properties of states and transitions, change the size of states and transitions, build connection between states and transitions, etc. VEMS provides a good modeling support for protocol testing. Its advantages include friendly user interface, simple modeling operation, model persistence and recovery.
The Dynamic Analysis of Reduction Gearbox of NC Gear Shaper Based on ADAMS
Authors: Tian Qi Hua , Tang Wei Bi , Du Yi Xian
Published: September 2013

The key factors of NC gear shaper working steadily are directly influenced by the mechanical properties of reduction gearbox of NC gear shaper .The reasons of the reduction gearbox of NC gear shaper producing vibration have been studied in condition of unstable load when it works based on ADAMS . The speed of shafts and the meshing force of gears are obtained from the dynamic simulation analysis by the virtual prototyping technology . It shows that the reduction gearbox of strength of the vibration increases from input shaft to output shaft and the vibration strength which reduction gearbox works in the unstable input speed is greater than that in unstable load torque.
Analysis and Simulation of Radar Clutter Using Spherically Invariant Random Processe
Authors: Xie Hong Sen , Shi Jin Bo , Luan Bao Kuan , Tian Hua Ming , Zhou Peng
Published: September 2013

Non-Gaussian probability distribution radar clutter not only is temporal correlated between different pulses, but also is spatial correlated between different range bins. In this paper, the method of simulation and validation of radar clutter is proposed using spherically invariant random processes (SIRP). The amplitude probability function and temporal correlation function of radar clutter can be controlled respectively, and the spatial correlation function can be also specified. The computer simulation of K-distribution and CHI-distribution radar clutter is used to validate the method, and is to validate the amplitude probability function, temporal-spatial 2D correlation function.
Study on UAV Path Planning Simulation
Authors: Sun Yong , Meng Hong , Li Wen Wei , Zhu Dan , Li Zeng Lu
Published: September 2013

Path planning is an important research content of unmanned aircraft vehicle (UAV) technology, it involves many factors, and simulation is very difficult. Based on the knowledge of relevant mathematical knowledge and path planning, a UAV path planning simulation method is proposed, the method can obtain reconnaissance band width in reconnaissance area by reconnaissance instructions, and then UAV reconnaissance flight paths can be calculated combined with the shortest path principle, and UAV can complete reconnaissance missions based on path planning in the shortest possible time. This method is simple and practical, and it meets the needs of the UAV path planning simulation in the large-scale system simulation.
Lattice Boltzmann Method for Numerical Simulation of Circular Tube Forced Convection
Authors: Yao Shou Guang , Wang Gong Li , Cheng Qing Fang , Zhou Chang Jiang
Published: September 2013

This paper established the thermal Lattice Boltzmann model of fluid flow and heat transfer, which is based on double lattice Boltzmann distribution model [. The temperature distribution adopted the higher accuracy velocity model. Based on this thermal lattice Boltzmann model, this paper simulated forced convection of circular tube fluid. Comparing the simulation results with the traditional CFD calculation results, we could find that the thermal lattice Boltzmann method have unique advantages in effectiveness and flexibility than the traditional calculation method.
New Method of Discernibility Matrix Formation
Authors: Meng Qing Quan
Published: September 2013

Aiming at the defect of the discernibility matrix formation, the three-process space-time function is analyzed, and the method is put forward which corresponding new elements dont involve the formation of discernibility matrix or the existed element is deleted, that is the method of discernibility matrix minimum formation. The algorithm of formation is also given in the method, with which, the number of discernibility matrix element is decreased, the space of data is saved and the speed of data mining is increased. The superiority of the method in time-space is verified during the experiment.
Simulating Polydisperse Ellipsoid Particles System
Authors: Liu Bin , Li Peng Fei , Tu Chang He
Published: September 2013

An efficient algorithm for contact detection among many arbitrarily sized ellipsoids is developed. The numberical method is unable to efficiently deal with ellipsoid particles of greatly varying sizes. To overcome this challenge, We present an algebraic method to simulate polydisperse ellipsoid particles system. We offered several times speed-up compared to the numberical method. So that the problem of contact detection in polydisperse ellipsoid particles system essentially is solved. We will describe a generalization of the well-known linked cell list method and an improvement on the nearest neighbor list method.
Clustering Algorithm Based on Improved Particle Swarm Optimization
Authors: Wang Hong Chun , Wen Feng Wen , Song Feng
Published: September 2013

K-means algorithm has therefore become one of the methods widely used in cluster analysis. But the classification results of K-means algorithm depend on the initial cluster centers choice. We present a new neighborhood for PSO methods called the area of influence (AOI) and consider the combination of K-means has strong capacity of local searching and PSO has power global search ability. The improved PSO, i.e., improves the K-means local searching capacity, accelerates the convergence rate, and prevents the premature convergence effectively.
The Application of Cumulative Sum Feature Extraction Algorithm in Data Stream Anomaly Analysis before Earthquake
Authors: Chen Li Ping , Kong Xiang Zeng , Xiong Pan , Zeng Jing , Lin Xin Qi , Zheng Zhi , Zhan Xiao Shan
Published: September 2013

A cumulative sum feature extraction algorithm for anomaly analysis before earthquake is proposed by using the cumulative sum feature extraction algorithm. The analysis results reveal that the anomalous variations exist prior to the earthquakes. The methods studied in this work include cumulative sum, smooth using the Technology of Locally weighted smoothing and compute feature points. These methods have been applied to analyze the anomaly from OLR data that correspond to seismic precursors, particularly to a comparative study of the two earthquakes of Wenchuan in China and one earthquake in eastern Japan.
Visual Modeling and Simulation of Plant Leaves
Authors: Ding De Hong , Fang Kui , Chen Yi Neng , Jing Song
Published: September 2013

Based on the original image of plants leaves, the edge detection method will be used to extract the geometrical morphology of leaves. The characteristic points of the contour can be calculated by Harris method. The contours of plant leaves is constructed by the quadratic B-spline interpolating curve, the leaf vein is generated by L system. The simulation of plant leaves is realized in OpenGL.
Research of Adaptive Gradient Projection Algorithm on Remote Sensing Image Reconstruction
Authors: Yan Hai Xia , Liu Yan Jun
Published: September 2013

In order to improve the low efficient and the noise effect of remote sensing image reconstruction, an algorithm of adaptive dual gradient projection for sparse reconstruction of compressed sensing theory is proposed. Point to the high frequency noise of remote sensing image, the ADGPSR algorithm pursuits the projection direction in two conjudate directions, thus the high frequency noise effect is overcame. Experiment results show that, compared with the GPSR algorithm, the ADGPSR algorithm on remote sensing image improves the signals reconstruction accuracy.
Volume Rendering of 3D Borehole Data Based on GPU
Authors: Wu Wei Jiang , Qin Li Zhi , Ma Shu , Li Guo He
Published: September 2013

Taking 3D borehole data for research object, an algorithm flow of volume rendering based GPU is given. According to the limited and discrete characteristics of 3D borehole data, Kriging interpolation algorithm is used to construct a regular grid data model. Ray-casting algorithm based on GPU is realized with the Visualization Toolkit (VTK). The results show that after the application of volume rendering technology, it is easy to practice the functions of arbitrary section displaying, volume clipping and volume data extracting which are practicalities.