bluuebunny/crossref_metadata_2025 huggingface dataset:
Digital Control of the Substations Based on IEC61850
Authors: Zhou Hong Lei , Ran Xiao Hong
Published: November 2010

The promulgation and promotion of IEC61850 provide a basic platform for the development of the digital substation. In this paper, the present situations and problems of the digital substation 220KV Baicheng are introduced and analyzed, And some schemes are proposed including the configuration of DF1900 monitoring system in substation layer and DF1925 controlling system in interval layer, and the optimization of communication networks and the access of the electronic transformer.The evaluations of successful transformation are summarized from the reliability and availability and flexibility in the end. From evaluations of the scheme, this transformation makes the reliability and availability of the digital substation 220KV baicheng improve greatly, but also enhances the flexibility of system. Moreover, the transformation also saves much money to purchase equipment of substation, so it also provides a new method to change for a large number of old substations to digital ones.
Effects of Environmental Temperature and Humidity on the Electrical Properties of Carbon Fiber Graphite Cement Mortar
Authors: Fan Xiao Ming
Published: November 2010

The paper researched the electrical properties of carbon fiber graphite cement-matrix composites(CFGCC) containing carbon fiber 0.5% (mass fraction of cement, the same below) and graphite powder 0%~30%, and the impact of environmental temperature(10~50°C) and relative humidity (20%~60%) to electrical properties of CFGCC by the four-probe method and KSON high and low temperature environmental chambers. The results have shown: the electrical resistivity of CFGCC decreases with increasing the content of graphite; the relationship curve of electrical resistivity and concentration of graphite exists percolation phenomena, the percolation threshold of CFGCC is about 25%; the electrical resistivity of CFGCC have decreased with increasing temperature; the variation rate of electrical resistivity have decreased with increasing the contents of graphite; the electrical resistivity have changed a little as the humidity changed, and the trend is towards smaller as a whole.
Visual-Based Motion Planning for Autonomous Humanoid Service Robot
Authors: Ji Xue Song , Xu Ping , Niu Guo Chen
Published: November 2010

A visual-based autonomous motion planning algorithm is designed to guide the robot to take the elevator autonomously. The floor chosen operation as well as the path planning and motion control for the robot’s in-out elevator are the two critical issues. A visual-based motion regulation method is proposed in this paper, so is a manipulator motion planning algorithm based on image Jacobian Matrix. Fuzzy logic is used to mobile path planning. Experimental results on humanoid service robot proves the validity of this control system.
Study on the Preparation of Polytetraﬂuoroethylene Hollow Fiber Membranes and the Properties
Authors: Huang Qing Lin , Xiao Chang Fa , Hu Xiao Yu
Published: November 2010

In the present study, Polytetraﬂuoroethylene (PTFE) porous hollow fiber membranes were prepared by PTFE concentrated suspension with the mixture of Poly(vinyl alcohol) (PVA) and Sodium alginate as the fiber-forming carrier. Factors affecting PTFE membrane pore structure and mechanical properties were investigated. Results showed that, (1) the permeation and mechanical properties of the PTFE membrane were influenced significantly by the sintering condition, (2) Morphologies of membranes were observed by scanning electronic microscopy (SEM), fixed sintering state was aided to form the pore structure which was much different from the node-fibril network obtained by PTFE biaxial-stretching process.
Fiber Optic Displacement Monitoring in Laboratory Physical Model Testing
Authors: Zhu Hong Hu , Yin Jian Hua , Pei Hua Fu , Zhang Lin , Zhu Wei Shen
Published: November 2010

For physical models, conventional techniques have difficulties in monitoring internal displacements during laboratory testing. In this paper, based on fiber Bragg grating (FBG) sensing technology, a bar-type fiber optic displacement sensor is developed for small-scale models. When the model deforms due to loading or unloading, the embedded displacement sensor can capture the displacement profile along the bar length using the strain data from quasi-distributed FBGs. Laboratory calibration tests have showed that the displacements measured by the FBG sensing bar are in good agreement with those from conventional displacement transducers. For the physical models of a gravity dam and a cavern group, the FBG sensing bars were successfully installed in predefined holes, together with conventional gauges. During testing, the FBG sensing bars measured the displacement distributions within the models. The fiber optic monitoring results demonstrate the deformation characteristics of surrounding rock masses induced by overloading and underground excavation and indicate the overall stability conditions of these two geo-structures.
Analysis of the Gear Contact Fatigue Strength Based on the Compressive Residual Stress
Authors: Xu Ying Qiang , Zhang Tao , Xu Peng
Published: November 2010

Contact fatigue is the primary failure form in the closed and well lubricated gear driving. Residual stress is an important factor influenced the fatigue. In this paper a relationship between the compressive residual stress and the gear contact fatigue strength was established basis on static shakedown analysis with elastic-plastic contact theory. The contact stress was obtained by hertz theory, and the residual stress induced by the gear meshing was simulated though finite element method. Base on the residual stress distribution obtained in previous step, three different pressures according to James theory was loaded into the contact zone. It was shown that the gear plastic deformation was unchanged if the secondary loading was no more than the initial load. The results suggest that residual compressive stress could improve the contact fatigue strength.
Study of Failure Mechanism of Anti-Dip Rocks Materials Slope under Mining Subsidence
Authors: Lv Yi Qing , Liu Hong Fu , Yang Jian Jun
Published: November 2010

In order to protect the lives and property of mine workers, the influence of rocks materials slope induced by coal mining was presented. Based on geological data, a case of the mining areas of Fengmaoding anti-dip slope in China was studied using simulation analysis methods. Results show that deformation and fracture of this slope was influenced by mining subsidence, and the rock and soil layer made subsidence deformation in the vertical direction under geostatic pressure. After the deformation became stability, it would make failure strain in the horizontal direction. If initial stress of the slap’s failure in surface exceeded the shear resistance,the slope gradually slipped down, and the landslides occurred finally.
Facial Expression Recognition Based on Orthogonal Nonnegative CP Factorization
Authors: Liu Chang , He Kun , Zhou Ji Liu , Zhu Yan Li
Published: November 2010

Facial Expression recognition based on Non-negative Matrix Factorization (NMF) requires the object images should be vectorized. The vectorization leads to information loss, since local structure of the images is lost. Moreover, NMF can not guarantee the uniqueness of the decomposition. In order to remedy these limitations, the facial expression image was considered as a high-order tensor, and an Orthogonal Non-negative CP Factorization algorithm (ONNCP) was proposed. With the orthogonal constrain, the low-dimensional presentations of samples were non-negative in ONNCP. The convergence characteristic of the algorithm was proved. The experiments indicate that, compared with other non-negative factorization algorithms, the algorithm proposed in the paper reduces the redundancy of the base image and has better recognition rate in facial expression recognition.
Prediction for the Sulfur Content in Pig Iron of Blast Furnace by Combining Artificial Neural Network with Genetic Algorithm
Authors: Chen Wei , Wang Bao Xiang , Chen Ying
Published: November 2010

Sulphur content in pig iron is one of the most important indices to represent the quality of liquid iron in blast furnace. In order to timely control sulfur content, a mathematical model is developed to predict the sulfur content in pig iron. Compared with the conventional artificial neural network model, a new method is developed to integrate artificial neural network with genetic algorithm. The genetic algorithm with the binary coded chromosome is used to optimize initial neural network weights. In this project, the first aim is to train the model by integrating artificial neural network with genetic algorithm according to the past processing variables. The second is to predict the next sulfur content based on the training result in the first step and according to the current processing variables. Compared with only using artificial neural network model, this developed method can improve the predicted accuracy. From practical applications, it can be found the model is exact and reliable to predict the sulfur content in the pig iron of blast furnace.
On the Convergence of Parallel Broyden Method
Authors: Wu Gan Zhou
Published: November 2010

Compare to the sequential Broyden method, an asynchronous parallel Broyden method is presented in the paper. We suppose that we have processors, which are divided into two groups. And the first group has processors, the second processors has processors, while the two groups are asynchronous parallel. If we assume that the objective function is twice continuously differentiable and uniformly convex, the global convergence of the algorithm is given. And under the same conditions, we show that the parallel Broyden method is superlinearly convergent.
OneAPI Restful Services and Java Implementation
Authors: Wang Dong Jin , Song Mei Na , Li Yan
Published: November 2010

In the past several years, there have been dramatic changes on the Web services landscape．After the traditional XML-PC web service, a new style-Representati0nal State Transfer (REST) is applied to Web services. In addition, the telecom operators have provided different APIs. OneAPI standards have been proposed. This article mainly introduces OneAPI standards and REST architecture. Some OneAPI supplied by GSMA website to provide REST service. Sample program implements can get the user address though the OneAPI.
Mathematical Foundation of the Fast Multipole BEM for 2D Potential Problems
Authors: Wang Wei Wei , Chen Yi Ming
Published: November 2010

The fast multipole boundary element method (FM-BEM) has been successfully applied to 2D and 3D large scale elastostatic problems and efficiently reduce the computing operations and memory requirements. In this paper, the FM-BEM based on Taylor series expansions is applied to 2D Potential Problems, the FM-BEM for 2D Potential Problems is presented and relative mathematical foundation is developed.
Middleware Design and Xml Data Table Creation Relate to Agent-Based Information Release System
Authors: Wu Jun Liang , Zhang Ping Ping , Wang Yong
Published: November 2010

This work is concerned with looking for new middleware and xml data tables’ create approach to support agent-based information release system. It solves the problem that how to alternate layout ever-changing data tables those arise in information release system. Its main medium is use borland delphi development platform to develop middleware that can dynamic create different data tables for various types of enterprises so that these enterprises release their information.
Statistical Analysis on Coal Mine Gas Explosion and Optimization of Safety Input
Authors: Xiao Cang Yan , Guo Li Wen , Chen Shu Zhao , Yang Yan Chao
Published: November 2010

This paper statistically analyzes the large coal mine gas accidents in China since 2006, and points out that explosion and gas outburst are the main reasons of gas accident, and focus in the future should be put on those serious accidents caused by gas explosion. Death toll of large gas accidents in 2009 is equal to that in 2008, which illustrates the importance of safety input in order to further improve the coal mine safety situation in China. In order to raise consciousness of enterprises on safety input, this paper puts forward the idea of integrating the value of life casualties’ loss into the analysis of loss in coal mine accidents and builds an optimization model of optimization of safety input based on maximization of economic benefit and thorough analysis of safety input, economic losses caused by coal mine accidents and loss of human life. With reference to foreign practices and related research, the value of life for each person is finally set from 5 million to 30 million. Finally it is proved through case study that the consideration of value of life is vital to improve the level of safety input and reduce mortality. Since 2005, the number of deaths caused by gas accident many years occupied the first coal mine accident in major categories. Therefore, the gas accident occurred in recent year statistical analysis, to take specific measures for improving the level of China's coal mine safety is important.
A Comparison of Different Methods for LAD Regression
Authors: Chen Hai Jun , Liu Xiao Ling , Liu Ling Hui
Published: November 2010

The least squares method is very sensitive to outliers, one of the simple alternative is the least absolute deviation, i.e. L1 regression, which is less sensitive to outliers, so which is more suitable the small sample and much noise situation. In this paper, the L1 problem of linear model is discussed, the previous work is reviewed systematically, different algorithms is compared, it is proved that the dual forms of different algorithms are the same.
Multi-Objective Optimization of the Housing’s Fillet Angle of the Universal Rolling Mills Using Improved Genetic Algorithm Combined with FEM
Authors: Ma Jin Hong , Zhang Wen Zhi , Chen Wei , Chao Shi Ping
Published: November 2010

In this paper, the standard genetic algorithm is modified based on the deduction of Rolle theory. A kind of genetic algorithms is set up. Combined the modified genetic algorithms with finite element method, a new kind engineering optimization method is established. This optimal method takes fully advantage of the unique feature of genetic algorithms that the optimal solution is achieved by a rapid global search and takes advantage of the unique features of FEM that the computation is accuracy. This method can solve multi-objective problems with more complex constraints in the engineering. The procedure is developed by VC++. Housing’s fillet angle of the universal rolling mills is optimized using this method. Compared with the zero order method and first order method companied with ANSYS, the result of this optimizing method is better.
BIM Digital Technology in the Construction Industry in the Field of Application
Authors: Zhu Li , Lian Wen Shan , Wang Fei
Published: November 2010

Design is a philosophy, is a building integrated system database, It is an emerging form of construction industry, but BIM itself on case also is not a new concept for most people the knowledge, BIM is not only breaking two-dimensional to three-dimensional design development, with more than a four-dimensional space, with integrated database concept, the engineering quantity estimates, forecasts, integrated management and construction progress and ranking logistics integration in promoting green building and energy conservation and pollution reduction has made outstanding contributions to great savings in manpower, financial, improve efficiency and reduce the chances of errors.
Effect of T6 Heat Treatment on the Microstructures and the Aging Behavior of the Grain-Refined A356 Alloys
Authors: Zhu Man , Yang Gen Cang , Yao Li Juan , Zhou Yao He
Published: November 2010

The influence of T6 heat treatment on the microstructures and aging precipitation in the grain-refined A356 alloys were investigated. Experimental results showed that, when T6 heat treatment was performed, the average values of mean diameter, aspect ratio, and roundness of silicon particles in the grain-refined specimens were decreased to 2.26~3.14 μm, 2.06~2.2, and 3.1~4.2, respectively. DSC curves revealed that three kinds of precipitates, i.e., β″, β′, and β, were observed in both unrefined and grain-refined A356 alloys. The exothermic peaks in the grain-refined A356 alloy shifted to high temperatures, suggesting the nucleation of β″ precipitates was decelerated. This could be ascribed to the minor solution of Ti or B elements during solid solution treatment.
Assessment and Remediation of Landscape Water Quality in the Central Area of Zibo City
Authors: Lu Jie , Liu Xiao Dong
Published: November 2010

In this study, eight water-quality indices, such as temperature, pH, colority, DO, BOD5, CODMn, NH3-N and TP, were monitored based on the water environment of Yulong River- the only landscape river in the central area of Zibo city. The water quality assessments of each individual parameter were performed. Results showed that Yulong River had already been eutrophicated. According to the current water qualities and environmental characteristics of Yulong River, an ecological complex filter plan was proposed to remedy Yulong River.
DMTA: A Task Scheduling Algorithm in Multi-Sinks Wireless Sensor Networks Based on Divisible Load Theory
Authors: Dai Liang , Shen Zhong , Chang Yi Lin
Published: November 2010

Multi-Sinks wireless sensor networks, a current research focus, has better stability and effectiveness compared to the traditional single-SINK structure. To solve the problem how to complete the tasks within the possibly shortest time, a task scheduling algorithm(DMTA) based on divisible load theory in multi-Sinks wireless sensor networks is proposed. In DMTA, the tasks are distributed to wireless sensor network based on the processing and communication capacity of each sensor by multiple Sinks respectively. By removing communications interference between each sensor, reduced task completion time and improved network resource utilization achieved. Simulation results show that DMTA reasonably distributes tasks to each node in wireless sensor networks, and effectively reduces the time-consuming of task completion.
Effects of External Transverse Alternating Magnetic Field on the Heat Flux Density Distribution of Atmospheric Pressure Plasma Arc
Authors: Meng Jian Bing , Dong Xiao Juan , Xu Wen Ji
Published: November 2010

A theoretical analysis was carried out to investigate the characteristics of atmospheric pressure plasma arc injected transverse to a transverse alternating magnetic field and a mathematical model was developed to describe the heat flux density distribution of the plasma arc. The effect of processing parameters, such as flow rate of working gas, arc current, magnetic flux density and the standoff from the nozzle to the workpiece, on the heat flux density distribution of plasma arc were also analyzed. The results show that it is feasible to adjust the heat flux density of the plasma arc by the transverse alternating magnetic field, which can expand the region of plasma arc thermal treatment and flatten the heat flux density upon the workpiece. With the magnetic flux density enhancing, the heat flux density gradient upon the workpiece decreases. Under the same magnetic flux density, the more gas flow rate and arc current, the more heat flux density peak increase. Contrarily, more distance from nozzle outlet to workpiece descends the heat flux density peak.
Artificial Glowworm Swarm Optimization Algorithm for Solving 0-1 Knapsack Problem
Authors: Gong Qiao Qiao , Zhou Yong Quan , Yang Yan
Published: November 2010

In this paper, an artificial glowworm swarm optimization algorithm for solving 0-1 knapsack problem is proposed, and the detailed realization of the algorithm is illustrated. According to intelligent algorithm for knapsack problem, the question of sensitive parameter’s choice is avoided under the greed idea. Simulation results show that the artificial glowworm swarm optimization algorithm for solving 0-1 knapsack problems is feasible and effective.
The Design of Coprocessor for Portable Electronic Devices Based on Tightly Coupled Structure
Authors: Liu Jing Bo , Zhao Gui Fen
Published: November 2010

In this paper, we introduced a kind of low cost security coprocessor architecture for portable electronic devices, whose core is the reconfigurable, scalable and tightly coupled security coprocessor architecture. The coprocessor integrates the resources of system effectively, and greatly reduces the power consumption as well as the area of the chip in the case of ensuring the data throughput needed of portable electronic devices.
Study on Psychology Teaching Theory in Physical Education
Authors: Mei Feng Xi , Bian Yong Qiang
Published: November 2010

Physical education is an important component of school education, as a leader of school must be updated ideas and attach the development of each discipline. At the same time physical education teachers can draw attention of school leaders through to their own behavior and the actual work results, through publicize physical education assignment, role and the important position in school education to raise awareness of teachers and students to the sports so that they respect and understand the work of PE teachers and less misunderstand and prejudice. At the same time, it will cause some subjective psychological factors that motivation of physical activities, volitional quality of student and anxiety mood
The Application of Green Manufacturing Technology in Mechanical Processing
Authors: Hong Qi , Gu Li Zhi , Yu Xiao Hui
Published: November 2010

Green manufacturing is the embodiment of the strategy for sustainable development of human society in the field of manufacturing sector. The manufacturing of parts and components can not carry out without mechanical processing. The environmental pollution caused by the traditional mechanical processing technics is very serious, especially the emissions of waste water and waste liquid during the process of machining. This paper discussed several mechanical processing technics geared to green manufacturing which are beneficial to the environmental protection, such as the dry cutting, quasi-dry cutting, low temperature air-cooling cutting, high-speed cutting as well as the near net shape forming, and finally drew the conclusion that the new mechanical processing technics combined with green technology with full consideration of the carrying capacity of resource and environment is an important part of green manufacturing in the future.
Analyzing and Modeling of High-Tech Virtual Enterprise
Authors: Sun Bo , Huang Min
Published: November 2010

With the rapid development of network and information technologies, more and more high-tech enterprises form the alliance of virtual enterprise to advance the competing capacity in the market, but how to improve the running efficiency of virtual enterprise with dynamic features is a very difficult problem. The paper analyzes the organization and operating features of the high-tech virtual enterprise, then presents a new modeling method based on mobile agents for management and running of high-tech virtual enterprise, which can be helpful for the development of it.
Empirical Equations for a Study on Strain Rate Sensitivity of Polypropylene Syntactic Foam
Authors: Wang En Yang , Omiya Masaki
Published: November 2010

The strain rate sensitivity of polypropylene syntactic foams with polymer microballoons in the relative density from 0.5 to 0.8 is studied at the nominal strain rate ranged from 10-1 to 102 s -1. Two equations of matrix materials are introduced to represent the viscoelastic properties, and another two equations are proposed with respect to the parameters of matrix materials to estimate the elastic moduli and yield stresses of polymeric syntactic foams.
Trajectory Planning of Wire-Driven Parallel Manipulator Based on Influence Coefficient Method
Authors: Cao Yi , Wang Xuan Yao , Zhou Hui , Long Shen , Liu Meng Si
Published: November 2010

The dynamic model of a 6-DOF wire-driven parallel manipulator is established, based on influence coefficient method for wire-driven parallel manipulator trajectory planning algorithm is proposed, the orientation parameters by Euler angles of moving platform of time first-order and second-order derivative which is not a moving platform angular velocity and angular acceleration is verified. For the moving platform position and orientation workspace trajectory planning, the kinematic characteristics of wires are discussed. The simulation results show that the tension of the wires are always greater than 0, the expressions of velocity, acceleration and tension of wires are exceptionally clear and simple. Also, the method of trajectory planning proposed is suitable for general 6-DOF wire-driven parallel manipulator.
Experimental Study on Moving Train Loads Identification from Bridge Responses
Authors: Wang Yi , Qu Wei Lian
Published: November 2010

This paper describes a method for multi-axle moving train loads identification based on simulated annealing genetic algorithm by minimizing the errors between the measured displacements and the reconstructed displacements from the identified moving loads. Experimental studies were carried out to investigate the effect of the proposed method on moving loads identification. A simply supported steel beam model and a model train with three carriages were constructed in laboratory. A series of comparative researches for moving loads identification have been conducted. Effects of moving speed and measurement station numbers on the accuracy of the proposed method are investigated. The results show that the proposed method is accurate and feasible for multi-axle moving train loads identification.
Water Absorption and Diffusion in Hollow Glass Microsphere Filled Epoxy Syntactic Foams
Authors: Liu Xiao Man , He Chang Jun , Li Hui Jian , Peng Hai Yan
Published: November 2010

The durability is very important in the research and application of polymers and their composites under different environmental conditions. The study of durability of patical filled epoxy resins had absorpted more attension in recently years, and the study of moisture absorption or water diffusion was almost along with the material manufacture. In the present work, the water sorption behavior in a series of different content hollow particle filled syntactic foams was studied by gravimetric measurements. The fashion factors on water sorption were discussed, and the change of density of syntactic foams on the subject was put forward.
Research on Teaching Goal of C-Language for Computer Major in Higher Education
Authors: Li Li , Huang Yong , Liang Bing
Published: November 2010

Although the students of science and engineering both take C-language course, their teaching goals must be of great distinction, for there is different requirements of computer and non-computer majors. The teaching goals for computer majors take into considerations the requirement and characteristics of its subsequent courses as well as its master of fundamental knowledge to lay a solid foundation for their continuous learning and to promote the teaching of C-language.
Image Segmentation Method Based on Improved Genetic Algorithm and Fuzzy Clustering
Authors: Zhang Jing , Zhang Xiang , Zhang Jie
Published: November 2010

Image segmentation is an important means of the implementation of image analysis. The existing segmentation methods have their own advantages and disadvantages in segmentation time and segmentation effect. Image segmentation based on fuzzy clustering and genetic algorithm is studied. An adaptive genetic algorithm is improved, the crossover rate and mutation rate are optimized, and a new adaptive operator is adopted to achieve a non-linear adaptive adjustment. A new combined image segmentation means is presented, in which the genetic algorithm is adopted to optimize the initial cluster center and then the fuzzy clustering is used for image segmentation. The practice proves that this image segmentation method and algorithm is superior to the traditional one, which improves the segmentation performance and the segmentation effect.
A Study on Properties of Ionic Polymer Metal Composite
Authors: Kobayashi Takuma , Omiya Masaki
Published: November 2010

After obtaining a way to fabricate IPMC actuator with palladium electrodes, the deformation of IPMC actuator behavior is evaluated under various solvents, various temperatures, and various frequencies of input voltages. By using the non-electrolytic plating method to obtain IPMC actuator, it is found that as the increase of the ionic radius the bending response of IPMC actuator becomes predominant from the experimental observation. When the electric field across its cross section is unloaded, IPMC actuator shows a large back relaxation under high temperature. In the experiment of the frequency response of the input voltage, IPMC actuator shows a good response to various frequencies from 0.1 to 6.0 Hz in which the resonant peak is observed at 5.5 Hz.
An Improved Gravitation Search Algorithm for Unconstrained Optimization
Authors: Wang Jia Nan , Li Xiang Tao
Published: November 2010

Gravitation search algorithm (GSA) is a novel meta-heuristic algorithm introduced recently. In this paper, a study of boundary conditions is presented indicating the invisible wall technique outperforms absorbing and reflecting wall techniques in this framework. Experimental results show that our method is sound and efficient.
The Simulation Study Based on Multi-Agents of Mobile Market
Authors: Zheng Wen , Jin Xia , Zhang Bo
Published: November 2010

The holistic simulation study is based on multi-agents to stimulate the behavior of mobile communication. The paper intents to understand the effect of the regulation on the market of mobile communication on the methodology of complex adaptive system simulation in swarm platform. The simulation was on the condition of mimic surrounding. The simulation program includes four classes of Swarm objectives. Results reveal that reasonable, ordered and co-coordinated communication market is on the state of the regulatory of duopoly. Based on the multiple agents modeling on the platform of swarm software, we engendered an artificial mimic mobile market to imitate the mobile telecommunication market. The effect of regulatory rules can be adjusted as the time going by. The best effect appeared at the middle stage of the policy in practice.
Studies on Evaluation of Express Companies’ Emergency Logistics Capabilities
Authors: Lu Shan
Published: November 2010

In this paper, based on theoretical research and empirical investigation, an index system is created for the evaluation of express companies’ emergency logistics capability from three types of capabilities, namely, emergency decision-making, implementing emergency plans and information assurance, by taking into consideration the characteristics of emergency logistics of express companies. In the issue of weight determination of the indices, given the subjectivity caused by individual evaluation, the approach of group decision making by multi-experts is introduced, which is the combination of we have introduced a group decision-making approach, that is to combine identically scaled weighting of judgment matrix and clustering weight determination. Multi-level fuzzy comprehensive evaluation method is chosen to evaluate express companies’ emergency logistics capabilities.Through empirical study, the validity and practicability of the index system and the evaluation method are both confirmed(verified).
Research on the Methods of Suppliers Selection in the Context of E-Commerce
Authors: Lu Shan
Published: November 2010

The development of e-commerce has had a significant influence on the index system, methods and process of supplier selection for companies. By considering comprehensively the features of supplier selection in the e-commerce environment as well as the traditional index system, the indices for supplier selection can be determined as supplier flexibility, supplier credit, product quality, informatization degree and supply ability.Based on intuitionistic language aggregation operators, the intuitionistic language sets are applied for selecting and evaluating suppliers, and the scientific nature of this decision-making process of selection of suppliers is then verified through empirical studies. It is necessary to further enrich and improve the index system and methods of supplier selection in the future according to features of companies from different industries and with different background.
An Improved Algorithm for TSP Problem Solving with Hopfield Neural Networks
Authors: An Jin Liang , Gao Jia , Lei Jin Hui , Gao Guo Hong
Published: November 2010

Hopfield and Tank have shown that neural networks can be used to solve certain computationally hard problems, in particular they studied the Traveling Salesman Problem (TSP). In this paper,on the base of the analysis of tradiontial methord,introduced an improved algorithm for TSP Problem Solving with Hopfield Neural Networks.We found the accuracy of the results depend on the initial parameters to a large extent, discussed how to set initial parameters properly; analysed the internal relationship between the terms in energy function, and improved the energy function. Used a fixed starting point to eliminate the equivalent solution problem,and the number of neurons is reduced from the N2 to (N-1)2. The improved algorithm reduced the unnecessary equivalent solution in calculate process, enhanced the computational efficiency. Experiment results showed that the algorithm improved the speed and the convergence.
A Novel Heuristic Routing Algorithm for Peer-to-Peer Network
Authors: Ren Yan Hua
Published: November 2010

To improve the efficiency and effectiveness traditional algorithm which still has some shortcomings, this paper combines with the advantages of genetic algorithm, brings forward a routing algorithm based on novel heuristic genetic algorithm (NHGA). The simulation results show that this algorithm overcomes the shortcomings of genetic algorithm. From the analysis and experiment result, it is concluded that NHGA was exploited to achieve the goal of improving the routing performance, and is superior to genetic algorithm simultaneously.
Study of Athletic Trauma in College Physical Education
Authors: Lou Hang Ying , Wang Guo Zheng
Published: November 2010

In order to make clear the basic law of college students’ athletic trauma, This paper made a survey through random sampling. As the result shows, the trauma chiefly occurs on limbs, with pulled articular ligament, skin abrasion and pulled muscle as its main types. It often happens during extracurricular athletics and physical education, when students take part in games such as track-and-field events, volleyball and basketball. The major reasons for those accidents are poor skills and insufficient warming-up exercises.
AI-VCR Computational Research on Visibility of 3D Materials Solids Reality Pictures
Authors: Ye Qiu Sun
Published: November 2010

An optional spatial 3D material solid reality picture may be showed on a 2D showing plane, its surface is commonly consisted of too many sub-surfaces of the 3D solid reality picture in both dispersal and continuation. It was a difficult problem to express all exact visibilities of solids sub-surfaces; because of some numerals computational error properties of visibilities are always unknown. So far, we cannot choose but select a proper dispersal degree of materials sub-surfaces, an approaching function of an optional material sub-surfaces B-Rep (Bound Representation), and numerals computation without any perturbation motion, etc. A novel numeral computational method of expressing exact visibilities of 3D spatial materials solids reality pictures with intelligent properties of VCR is given in this paper.
Compression Resistance of Magnetorheological Fluid
Authors: Wang Hong Yun , Wang Xiao , Bi Cheng
Published: November 2010

The ability of magnetorheological(MR) fluids to resist compression in the direction of magnetic field was tested to investigate the quasi-static squeezing process of MR fluids. A experiment setup was designed and fabricated to test the compression characteristics. Under the different magnetic flux density, the curves of the MR fluids were studied for yield stress versus compression stress, compression stress versus compression strain. The compression resistance of MRF was then measured for the different magnetic flux density for comparison with the shear yield strength of the same magnetic field. The results showed that the compression resistance of the MRF was much stronger than its shear yield stress for the same magnetic field strength conditions. The compression resistance of MRF can be utilized to design new magnetorheological devices.
A Model for Chinese Sentence Similarity Computing
Authors: Yang Xian Feng , Yu Zhou , Zhang Pei Ying , Gao Guo Hong
Published: November 2010

Sentence similarity computation is very important in the field of case-based machine translation. Through the in-depth analysis of sentence and the sentence similarity computing method based on the similarity computation of the word form feature, the word order feature and the semantic feature, we propose a sentence similarity computing model based on the multi-featured weight. By fusing the three features, giving different feature different weight to adapt the contribution of each feature to the sentence similarity computation, make sentence similarity computation more accurate. Experiment result shows that this approach has better accuracy in sentence similarity computation than the others.
Exponential Convergence Rate Estimation for a Class of BAM Neural Networks with Time-Delays
Authors: Yu Jian Dong
Published: November 2010

This paper is concerned with the exponential stability analysis problem for a class of neutral bidirectional associative memory (BAM) neural networks with parameter uncertainties and mixed time-delays where the parameter uncertainties are norm-bounded and the mixed time-delays involve discrete, distributed and neutral time-delays. By utilizing free-weighting matrix method and an appropriately constructed Lyapunov-Krasovskii Functional, some nove delay-dependent and decay-rate dependent exponential stability criteria are derived in the terms of linear matrix inequalities (LMIs). Meanwhile, the maximum allowable decay rate can be estimated based on the obtained results. Two numerical examples are presented to demonstrate the effectiveness of the proposed method.
Preparation and UV Absorption Property of Hybrid Fluorocarbon/ZnO Thin Films Deposited by RF Magnetron Sputtering
Authors: Zhang Yu Hui , Ji Quan , Liu Zeng Ji
Published: November 2010

Nanowire-mesoporous network structured fluorocarbon polymer films were prepared by radio-frequency (RF) magnetron sputtering of a polytetrafluoroethylene (PTFE) target on a poly(ethylene terephthalate) (PET) substrate. The fluorocarbon films were used as precursor materials to prepare fluorocarbon/ZnO double-layered hybrid films by reaction sputtering of a Zn target on the fluorocarbon films. The hybrid films had strong UV absorption that was far larger than the sum of the individual absorptions of fluorocarbon film and ZnO film because of a synergistic effect. The hybrid films exhibited multi-enhanced ultraviolet absorption due to the π-conjugated molecular structure, the nanoparticle-mesoporous reflection of fluorocarbon polymer films, and the absorption effect of nanosized ZnO particles.
Dynamic Analysis of the Base Isolator Structure
Authors: Liu Ying Li , Li Chun Miao , Yan Te Liang
Published: November 2010

Isolators are included in the new earthquake-resistant standard. This article analyses some questions on base-isolators and presents a non-linear dynamic computing-model for the time-history. A corresponding computer program is also compiled. With the program, the earthquake response of a isolated structure including the displacement, acceleration and the shear force of each floor are calculated and compared with those of the same structure without base-isolation. It has been found that base-isolation has important realistic significance in mitigating earthquake disaster effectively and has enormous economic and social benefits. Therefore it is a kind of extremely popularizing and applying new technology.
The Structural Dynamical Buckling Analysis for a Novel Vacuum Autoclave under the Extreme Operating Conditions
Authors: Liu Hong Pu , Li Xiao Jing , Wang Di , Tang Jian Sheng , Yang Xue Ling , Zhu Cheng Jun
Published: November 2010

The elastic buckling load is physically important in design of the pressure vessel with shell framework because it is actually the critical step in a thin-walled shell configuration that will eventually lead to complete failure. An finite element model of vacuum autoclave was established and the buckling load calculations under the extreme operating conditons have been carried out to obtain the modal deformation condition and the safety factor. The results showed that the structure has a higher safety factor, which indicated that the vacuum autoclave design can meet the working conditon requirements.
A Large-Scale Device Collaboration Resource Selection Method with Multi-QoS Constraint Supported
Authors: Rong Xiao Hui , Deng Pan , Chen Feng
Published: November 2010

With the rapid development of the “Internet of Things” and large-scale area management, device collaboration has developed to the stage of large-scale device collaboration. Aiming at the large-scale, dynamics and real-time of the large-scale device collaboration system, in order to ensure the performance of the large-scale device collaboration system, a Quality of Service(QoS) model of large-scale device collaboration is proposed, which contains device QoS model, composite QoS model and QoS relation model. Based on the model, an algorithm of the resource selection in large-scale device collaboration system is presented. Finally, the result of simulation experiments on the large-scale device collaboration prototype system shows that the method can satisfy the performance requirements of the large-scale device collaboration system.
Scale and Corrosion Inhibition of Synthesized Polymers from Waste Itaconic Acid
Authors: Ding Jin Cheng
Published: November 2010

The itaconic acid polymers of low molecular weights were prepared from itaconic acid wastes. The waste solution was distillated under vacuum of 2.00 kPa and temperature of 40-90 °C to reclaim the used solvents. The remains were neutralized by NaOH, initiated by 5 wt. % potassium persulfate under nitrogen protection and polymerized in water for 12 h at temperature of 100-102 °C in consequence to prepare the itaconic acid polymers. The scale inhibition efficiency could reach 99.51% with a polymer amount of 15 mg/L in the water sample with Ca2+ and HCO3- concentrations of 240 mg/L and 732 mg/L. The corrosion inhibition efficiency of polymers could reach 97.89% in the industrial circulating water with Ca2+, alkalinity and total hardness of 480 mg/L, 341 mg/L and 598 mg/L (all calculated in CaCO3 content). The biodegradation rate of polymers could attain 82.11% in the microorganisms environment at 35 days of operation.
Study on WEB Page Fusion Classification Model
Authors: Zhang Xiao Dan , Zhu Li Jun
Published: November 2010

A general fusion classification model is proposed, which based on information fusion, dealing with multi-media information of WEB for classification. In the model, different information is extracted from the same WEB page, processed by different pre-processing method and classification algorithm. The different classification result of Sub fusion layer is input into the Fusion layer separately. And the final classification result output from Fusion layer. The experiment shows, the fusion classification model can improve the classification precision effectively.
Cathodeluminescence Characterization of AlGaN Film Grown by MOCVD
Authors: Wang Lian Jia , Zhu You Zhang , Wang Hong Xia , Liu Ben Li , Yuan Jin She
Published: November 2010

Recent achievements in III-nitride semiconductor structures growth have allowed ultraviolet (UV) photo-detectors based on these compounds to be well established today. In this article, AlGaN film of 1-μm thickness was grown on Al2O3 substrate by metal-organic chemical vapor deposition (MOCVD). The AFM was used to analyze the surface morphology of the AlGaN film; X-ray diffraction measurements were used to study the quality of the film’ crystal structure; Cathode-ray luminescence(CL) was employed to study the luminescence properties of the AlGaN film. The result shows that there is a single atom layer on the AlGaN film’surface, and it shows that a low-defect-density AlGaN film with good surface morphology and single crystal Hexagonal structure has been obtained. It is found that there is some relationship between the film’crystal structure , dislocations and the luminescence properties . PACS: 73.61.
System Optimal Design Based on Neighborhood Cultivation Genetic Algorithm Combined with Modified Method of Feasible Directions
Authors: Wang Lu , Zhao Cun Sheng
Published: November 2010

Parametric model of floating raft vibration isolation and shock resistance system was built. Optimization techniques of exploitation combined with exploration was brought forward with NCGA used in global and MMFD used in local optimization. Multi-objective optimization design frame was set up in the paper and the Pareto optimal sets were given. At last the method of deducing design variables from Pareto sets was brought forward.
Thermal Deformation Modeling of Post-Rolling Deterioration of Hot Strip Flatness during Forced Cooling of Coils
Authors: Yu Xiang Long , Jiang Zheng Yi , Yang Quan
Published: November 2010

Flatness imperfections are observed during uncoiling of the hot rolled strip after forced cooling of coils to ambient temperature. This problem is significant in thin strip as free defect was considered in the process. A mathematical model for heat transfer and thermal deformation analysis during cooling of hot rolled coils is developed to explain the phenomenon of post-rolling flatness deterioration, and predict the occurrence and magnitude of the defects. The numerical simulation results obtained in this work were experimentally validated. It is shown, at a low coiling temperature allowing the phase transformation to reach completion, that the axial distribution of the temperature mainly causes the variation of the local thermal stress, and will promote the flatness deterioration.
A Hybrid Model Using Genetic Algorithm and Neural Network for Optimizing Technology Parameters in Skew Rolling Seamless Pipes
Authors: Hu Jian Hua , Shuang Yuan Hua , Liu Peng
Published: November 2010

In the production of seamless pipes, there are many factors influencing the quality of the seamless tubes such as diameter of original pipe, feed angle, temperature, minimum roll gap and so on. Unfortunately, the selection of the parameters still relies on manual operation and the experience of engineers. In this paper, a novel hybrid model through integration of genetic algorithm(GA) and neural network is proposed to optimize the technology parameters. Firstly, the neural network model is developed between technology parameters and final pipes dimensions. Then, genetic algorithm is used to optimize the neural network structure. At last, accuracy of the parameters is verified by experiment. The research results indicate that the proposed approach can effectively help engineers determine optimal technology parameters and achieve competitive advantages of product quality and costs