bluuebunny/crossref_metadata_2025 huggingface dataset:
Selection of Suppliers in Fuzzy Environment with Stock-Out Allowed
Authors: Liu Cheng , Lu Zong Juan
Published: June 2011

On the premise of time restriction and allowable stock-out, fuzzy parameters of suppliers’ supply capacity and demand capacity of manufacturers are considered, and a satisfactory selection scheme of suppliers is discussed in this study for the determination of the suppliers involved and the quantity of their materials in order to minimize the total cost. A fuzzy planning model is proposed concerning this issue, and we solve it by using the interval-valued mean to transform the uncertain model into their equivalent formulation, thus providing theoretical basis for the selection of suppliers.
The Research of Authentication Framework Based on PKI and ID-PKI
Authors: Zhu You Chan , Zhang Xiao Fang
Published: June 2011

As the development of network the grid will be widely used. To choose a suitable authentication mechanism in a large grid is very important. Identity authentication is one of the important mechanisms that can achieve grid security. It is the first line in the grid applications. It is also a portal in the security system. In the light of the advantages and disadvantages of PKI and ID-PKI, this paper provides a new technology. Presently, PKI and ID-PKI authentication technology is a popular authentication technology. This technology uses the identity certification to reduce the overhead in the domain, and uses CA authentication between domains to guarantee the security of the system.
Similarity Theory Design of Centrifugal Fan’s Impeller
Authors: Chen Limin
Published: June 2011

At present a set of wholly mature design methods of impeller theory based on existential experiences do not exist, because of the complexity of internal flow characteristics of centrifugal fan. Therfore it will undoubtedly provide helps for the improving of existing mehtods to fully master the existed successful experience. Based on statistical datas, some new methods used to determine the main geometric parameters of centrifugal fan’s impeller was proposed in this paper.The paper analyzes the internal relations between a large number of existing aerodynamic sketches and performance parameters of centrifugal fans by means of statistical method and finds regularity, so provides help for simplifing calculation procedures and improving the reliability of impeller design.
Study on Stray Capacitance of MEDM Machine Tool
Authors: Sun Shu Fa , Wei Dong Bo , Di Shi Chun , Yu Min , You Hao Tian , Wang Ze Li
Published: June 2011

The stray capacitance in the process of MEDM has been the key problem of influencing the processing dimension and precision. This paper puts forward a method of measuring the stray capacitance of MEDM machine tool, through recording the charging waveform of two cases that the RC pulse power is on the machine tool or not by an oscilloscope, and then the measured data are substituted for the capacitance charging formula, we get the stray capacitance value of MEDM machine tool. This paper also tests the cases of different charging voltage and different tool-electrode length, finally we find that the tool-electrode length has a big influence on the stray capacitance.
Nearest Neighbor Algorithm for Information Engineering Surveillance Based on Intelligent Materials
Authors: Liu Hong Zhi , Wang Zhen Hua
Published: June 2011

To improve efficiency of information engineering surveillance, expert system was introduced. First, describes the theory of expert system and the necessity of expert system for information engineering surveillance; Second, designed the system architecture, analysis how to store the cases of the system and describes a case retrieval algorithm, introduce information entropy, compute information gain; Finally, make an better Nearest neighbor algorithm method, the improved algorithm has overcome the traditional K-NN method’s inadequate.
International Comparison and Comprehensive Evaluation of Petroleum Industry
Authors: Li Ning , Fu Fang
Published: June 2011

Petroleum industry is a pivotal component of a country’s industry, which can provide fuel oil and gasoline to guarantee the running of the whole economy system. By using the history data of petroleum industry in different geographic nations, we can get the difference between countries. To measure the petroleum development level, we collected the corresponding data of petroleum production, consumption, oil export net, oil import net and refining capability of different nations. To calculate the using efficiency of different nations, the comprehensive evaluation named DEA is applied in this paper to in the view of multiple inputs and outputs system. By using the results of comprehensive evaluation and international comparison, the gap analysis between China and other nations are obtained as conclusions.
HRM Performance Evaluation Based on Grey Theory and TOPSIS Methodology for Scientific Material Company
Authors: Zhang Chao Hui , Li Ning
Published: June 2011

With the development of human resource management, the function of human resource becomes more prominent in performance management in enterprises. By using strategic and coherent approach, we can measure the performance of employees which individually and collectively contribute to the achievement of the objectives of the business. Because human resource management (HRM) is a multiple dimensional system, the HRM performance evaluation should be taken peer variables into account. So, we proposed a peer appraisal method, denoted as TOPSIS, to evaluate the performance of human resource in enterprises. Before we applied TOPSIS methodology, the indexes for measuring the HR performance should be identified firstly. Based on the basic traits of HRM, the indexes are identified by grey correlation analysis. A peer performance evaluation frame based on grey theory and TOPSIS methodology is proposed in this paper. Using the HRM performance evaluation frame, we applied in 45 scientific material enterprises in Jilin province and drew corresponding constructive conclusions.
On Applying Kriging Approximate Optimization to Sheet Metal Forming
Authors: Xie Yan Min
Published: June 2011

This paper presents a methodology to effectively determine the optimal process parameters using finite element analysis (FEA) and design of experiments (DOE) based on Metamodels. The idea is to establish an approximation function relationship between quality objectives and process parameters to alleviate the expensive computational expense in the optimization iterations for the sheet metal forming process. This paper investigated the Kriging metamodel approach. In order to prove accuracy and efficiency of Kriging method, the nonlinear function as test functions is implemented. At the same time, the practical nonlinear engineering problems such as square drawing are also optimized successfully by proposed method. The results prove Kriging model is an effective method for nonlinear engineering problem in practice.
Research on Path Tracking Control for Vision Based Intelligent Vehicle
Authors: Cui Sheng Min , Zhang Chao , Wang Jian Feng , Zhang Kun
Published: June 2011

This paper proposes an optimal control method to achieve the path tracking mission for the vision based intelligent vehicle. After the access of road trajectory, path tracking task is achieved by the intelligent vehicle automatic steering devices. The angle deviation and lateral deviation relative to the target path can be controlled in the smaller range by state feedback optimal control. A car model contained road information is established for the achievement of intelligent vehicle path tracking and automatic steering. Some values of the variables needed for the control system are obtained by sensors mounted on the car, and achieve the path tracking by the optimal state feedback controller. The algorithm proposed has been validated by simulations. It can make the lateral deviation within the expected range stability. And also the lateral acceleration meets the ride comfort requirements.
A New Method of Complex Maneuvering Event Detection
Authors: Chen Wei , Li Qing , He Jian Bin , Jin Tao
Published: June 2011

In dealing with such problems as imprecision and poor real-time performance in complex maneuverable events detection. A method based on RFNN (Rough-Fuzzy Neural Network) is proposed. Firstly, the minimal rule sets from data samples are acquired by using the Rough Set Theory; secondly, these rules are used to construct the initial scalar values of neural cells in each layer and their relative parameters in the fuzzy neural network; lastly, parameters of the network are acquired by using BP(back propagation) algorithm. The experimental results indicate that RFNN take advantage of the sample data features effectively, reduce the number of rules, simplify network structure, improve the precision of detection and the performance of real-time.
Fault-Tolerant Transfer Algorithm Based on Interweaving Code in Opportunistic Networks
Authors: Luo Tie Qing , Zhang Jin , Wang Ying
Published: June 2011

In order to resolve the problem of data packets losing abruptly in opportunistic networks, a fault-tolerant transfer algorithm based on interweaving code is proposed. The algorithm includes two parts: one is used by nodes sending data and another is used by receiving nodes to recover lost data. When the packets are sent, interweaving idea is used to disperse the packets. When the packets are received, interpolation method is used to recover the sequence of lost packets based on the strong autocorrelation of transferred packet. Then, interpolation method is used to recover lost data.
Numerical Simulation on Flow Field of the Rotary Cylinder’s Spiral Flow
Authors: Li Song Bai , Liu Yi Lun
Published: June 2011

This paper introduces the structural design and operation principle of rotary hydraulic cylinder. Seven spiral flows with different clearance were designed. The models were built by Pro/E. Structure meshes were generated by using Gambit. Based on laminar model and SIMPLE algorithm, the interior flow field in different clearance and the same clearance at different rotation rate were numerically simulated and analyzed with Fluent. The relationship of clearance, rotation rate and viscous force, maximum temperature, stiffness, flow rate were obtained. Simulation results show that clearance’s influence on internal leakage is greater than rotation rate, at the clearance of 0.05mm～0.10mm is relatively suitable.
The Study of Lateral Buckling for Leaning-Type Arch Rib System under Hinged Boundary Condition
Authors: Wang He Ling , Liu Ai Rong , Yu Qi Cai , Guo Yu Zhu , Shen Fu Lin
Published: June 2011

This paper takes leaning-type arch ribs system as research subject. And based on the Ritz method, the analytic solution of the lateral buckling critical load of leaning-type arch ribs system under the arch springing hinged boundary condition is derived. Compared with the result obtained from FEM, it is verified that the lateral buckling critical load analytic solution presented in this paper is accurate enough. On that basis, the effect of boundary condition on the lateral bucking critical load of leaning-type arch rib system is analyzed. It is shown that the lateral stability of the leaning-type arch rib system under arch springing clamped boundary condition is much better than the one under hinged boundary condition. And the former’s lateral bucking critical load is 2.13~2.49 times as large as the latter’s. Stable arch inclined angle growing, the leaning-type arch rib system’s lateral bucking critical load increases effectively. But its amplitude under hinged boundary condition increase larger.
Research on the Frame of Entrepreneurial Based on Environment View
Authors: Zhu Yan Kong , Hu Cheng Xiang , Le Teng
Published: June 2011

This paper was to construct a frame of entrepreneurial research. Conclusion was drawn from the perspercitive of environment and it was based on the system theory, the organization balance theory and the entrepreneurial practice of china. The result is that entrepreneurial is a dynamic balance between entrepreneurship and entrepreneurial environment.
RBF Neural Network-Based Terminal Sliding Mode Control for Reentry Warhead
Authors: Zhao Hong Chao , Chen Jie , Liu Hua Zhang
Published: June 2011

The existing moving mass control system of a nonspinning reentry warhead could not drive the system error to reach zero in finite time. In order to settle the finite time reach issue, an RBF neural network-based terminal sliding mode controller was presented to design the moving mass control system. It used a terminal sliding mode to ensure that the error reaches zero in finite time. The disturbance and coupled terms of the warhead were treated as uncertainties. An RBF neural network was used to estimate the uncertainties. A nonspinning warhead was taken in the simulation to test the performance of the presented controller. The simulation results show the presented controller has faster tracking speed and higher tracking precision than the former research result.
The Strategy Research on Dynamic Discovery of Grid Resource
Authors: Ma Yan , Liang Yuan Yuan , Jiang Xiao Ping
Published: June 2011

This paper analyzes the basic principles of ant colony algorithm,Grid Resource Discovery Method is proposed based on the ant colony algorithm. Applying the domain to organize grid resource, and keeping the dynamic resource up to date by adding the domain node and updates. Using the improved ant colony algorithm to discover the inter-domain resource, avoid repeated search process, and achieve quick search of resources.
Horizontal Seismic Response of Self-Anchored Cable-Stayed Suspension Bridge under Pile-Soil-Structure Interaction
Authors: Feng Miao , Ping Guan , Bo Wang
Published: June 2011

Based on scheme of Dalian gulf cross-sea bridge, in this paper, a 3-dimensional FE model for Self-anchored cable-stayed suspension bridge is established with finite element program and pile-soil-structure interaction is simulated by use of the equivalent embed fixation model. Based on the FE model, model analysis is carried out and the effects of pile-soil-structure interaction on dynamic behavior of long-span self-anchored cable-stayed suspension bridge are specially studied. The seismic response analysis result considering that pile-soil-structure interaction was compared with that of without considering such interaction. The analysis result show that interaction reduced horizontal displacement in middle span of stiffening beam and top of tower, horizontal moment not only at bottom of tower, but also assistant piers. The research results provide some theoretical foundation to composite structure system.
Research on the Development Strategy of Knowledge Management in E-Commerce Based on Intelligent Materials
Authors: Zhao Li
Published: June 2011

With the development of knowledge economy, E-commerce is facing more and more challenges, therefore, it is necessary to formulate a new developing strategy of e-commerce through the introduction of Knowledge Management (KM). This paper discusses the relationship between KM and e-commerce, points out that it is very necessary to introduce KM into e-commerce. Afterward, on the basis of analysis of knowledge contents concerned in e-commerce, it proposed the KM-based developing strategy of e-commerce from three aspects: the premise of development, the developing path, and the guaranteeing measure.
Simulation of Huangguan Pear Vibration Damage during Transportation
Authors: Li Chen , Cao Bin , You Shi Zhou
Published: June 2011

With the economic development and the improvement of living standards, the demands for the excellent quality fruits grow quickly, while fresh fruits are restricted by the region and season, transportation plays an important role in it. Vibration causes fruits mechanical and physical damage during transportation and affects the fruits storage characteristics and sales. This paper selects Huangguan pear as the research object, using frequency spectral density curve simulates the vibration damage condition of the Huangguan pears in cartons during the actual transportation. Through the simulation results analyze the damage level under the conditions of different packaging forms and different situations and different stacking, and then analyze the relationship of the vibration damage and the other factors. Finally the paper puts forward the Huangguan pear packaging improvements.
Automation Bridge Design and Structural Optimization
Authors: Gui Xue , Zheng Xiao Yan , Song Jian Wei , Peng Xia
Published: June 2011

This paper summarizes the structural optimization applications in civil engineering design and development of the situation based on the characteristics of the bridge structure design process is proposed for the bridge project to the genetic algorithm, neural network, expert system technology as the basis for combining automated design and optimization of structural design of the system; as basic idea, given the structure design of automation system design and optimization of the overall design framework, and prestressed beam design automation is simply an example of structural design and optimization of design automation. Finally, a brief summary of the development process of bridge design software, design automation and optimization that the inevitable trend of development.
PVDF Piezoelectric Film Accelerometer for Low Frequency and Ultra-Low Frequency
Authors: Wan Zhou , Ji Tao , Shang Yuan Yuan
Published: June 2011

The measurement of low and ultra-low frequency vibration has always been a very difficult problem. In this paper, a new structure is designed and a new type of low and ultra-low frequency accelerometer is developed by using a sensitive element PVDF. A new type of sensor structure and working principle are discussed and mathematical model and characterize are analyzed in this paper. The result confirmed that this design method can improve sensitivity, precision and performance of the sensor, overcome the acceleration interference of other direction in the vertical axis upwards, and improve the unilateralism and stability of the sensor.
Research on Total Error of Anti-Radiation Missile against Target Radiation Source Shutdown
Authors: Zhang Long Jie , Xie Xiao Fang , Liang Jie , Li De Dong , Cao Jian
Published: June 2011

This paper established the total error model of Anti-Radiation Missile under condition of target radiation source shutdown, which includes three dimensional passive location error model using information of azimuth and elevation angle as well as their changing rates, and gyroscope drift error model of Strap-down Inertial Navigation System. By analyzing the three dimensional passive location method to moving emitter using single stationary observer, the paper had a research to the hit probability of Anti-Radiation Missile under various flying conditions. If higher hit probability is required, the missile should increase its azimuth and elevation angle as much as possible while not to overstep its attack angle. Simulation result showed that the shutdown occasion of radiation source did much influence to the hit probability of Anti-Radiation Missile, which has great meaning to improve he bat efficiency of Anti-Radiation Missile.
Study on Heating ESP Ash Hopper with Hot Air from Air Preheater
Authors: Hu Man Yin , Che Kai , Gao Wei Ying , Tang Yong , Gao Xiang Lin
Published: June 2011

The paper has designed a new method of hot air from air preheater heating electrical precipitator ash hopper. Firstly, the connection method of air preheater and ash hopper interlining has been drawn in design sketches. Then, through finding out the optimal design parameters such as diameter, flow velocity and temperature, the optimal scheme has been determined. It came to the conclusion that the new type of heating method has good feasibility and value of promotion.
Hydraulic Calculation and Visualization of Long Distance Pipeline Based on GIS
Authors: Feng Xiao Liang , Xu Xue Jun
Published: June 2011

Geographic Information Systems (GIS) are designed to support the management, manipulation, analysis, and modeling of spatial data. Water supply pipeline network is a system which has a large of spatial attribute data. In order to improve the managing and working efficiency, the paper proposed a new method for designing the long distance pipeline based on GIS. Seamless integration of GIS platform, hydraulic model of long distance pipeline is built which is base of hydraulic calculation. The model is based on building pipeline concise model dynamic. The hydraulic calculation is to guarantee the authenticity of the model which can help to simulate the whole system status and analyze the condition of long distance pipeline. The pressure and safety coefficient models of long pipeline based on GIS can help operator to know the details of every segment in the long distance pipeline system. The method locates the weakness of long distance pipeline and displayed impressively on GIS platform. All the technologies strengthen the security of the pipeline design, improve the accuracy of hydraulic calculation, and help operators to analyze the long distance pipeline condition by spatial visualization. The example shows that the method is reasonable, effective, and has been applied to practical project.
Design of Multilayer Substrates Microstrip Patch Antenna for Fuze Application
Authors: Wang Ting , Xu Li Xin , Cui Zhan Zhong
Published: June 2011

A broadband microstrip patch antenna with multi-layer substrate for fuze application is designed. The multi-layer substrate is composed of the bottom layer of Si with low electric conductivity, the middle and the top layers of Si with high electric conductivity. An air cavity is fabricated by inductively coupled plasma (ICP) etching in the middle layer of Si to reduce the effective dielectric constant of the multi-layer substrate. The multi-layer substrate microstrip patch antenna is simulated and optimized by finite element method. The simulation results show that operating at 10GHz, the bandwidth and the gain of the multi-layer substrate microstrip patch antenna are 15.5% and 6.1dB respectively, which meet the needs of the application in fuze well.
UAV’s Robust Controller Design Using Quantitative Feedback Theory
Authors: Xing Xiao Jun , Yan Jian Guo , Yuan Dong Li
Published: June 2011

In order to overcome the shortage that unmanned air vehicles (UAVs) are easily disturbed by air current and tend to be unstable, a robust controller was developed for a certain small UAV’s lateral motion using quantitative feedback theory (QFT). Firstly, Basically Non-interacting (BNIA) Method was applied to decompose the UAV’s lateral motion into two subsystems. Then QFT approach for LTI/SISO system was used in each subsystem’s controller design respectively. Finally, QFT controller for UAV’s lateral motion was synthesized based on the two subsystems’ QFT controllers. The simulation results show that the QFT robust controller not only improves dynamic characteristics but also enhances stability and robustness.
Research on Ontology-Based Task Modeling in Manufacturing Grid
Authors: He Yuan , Zhang Qi Ling , Hu Da Chao
Published: June 2011

Manufacturing grid (MG) is the application of grid technology in networked manufacturing. Ontology has been considered as an important theoretical basis in many areas such as information integration, semantic web and knowledge management. The descriptions on manufacturing tasks are usually vague, incomplete and inconsistent in industry. MG task model and its semantic description method are the foundation and guarantee of quality of service (QoS) in MG. The MG task model is presented. The combination of ontology with MG study, in terms of analyzing basic classes in MG, and basic ontology classes, requirement model of service capacity of MG task are proposed. According to the description model of service capacity, the semantic description method for MG tasks is put forward.
Research on Dynamic Clonal Selection Algorithm Combined with Artificial Fish School
Authors: Tian Yu Ling , Liu Yu Hao
Published: June 2011

As in the dynamic clone selection algorithm, the detector use factor is low, the overall importance is bad, this article proposed that the behavior of follows, gathers which has the overall importance and the rapid convergence in the artificial school of fish algorithm applicant in the dynamic clone selection algorithm detector generation phase. Meanwhile, the efficiency of algorithm is improved, and many questions which stochastically the detector takes are solved. The simulation experiment indicated that the improved algorithm has the advantage of the artificial school fish algorithm and made up the question that earlier period to restrain slowly, the detector production efficiency low in its own system.
Analysis of Yaitai City’s Sustainable Economic Development Capacity Based on City Material Property
Authors: Zhang Guang Yi , Luo Yu , Zhang Xin Hui
Published: June 2011

With rapid economic development in recent years, Yantai city's comprehensive strength has been significantly enhanced. Meanwhile, such problems as environmental and ecological protection has become increasingly prominent, which forms barriers preventing it from further growth in long run.The sustainable economic development vigor of Yantai has a strong practical significance. By building an evaluation index system with no quantitative treatment of data, this paper obtains economic development index of Yantai including social development, resource development, environmental development and comprehensive economic development index, and accompanied by analysis of its sustainable development. Finally, the author points out problems of economic development of Yantai, and puts forward related measures.
A Study of Push-Based Sequence Authorization Mechanism for Grid Security
Authors: Zhu You Chan , Bai Juan Hua
Published: June 2011

Grid security is one of the core issues of grid computing, and the authorization issue of grid security is a hot topic of current research. This paper describes three sequence patterns of the authorization, and focuses on the architecture of push sequence model and application example-Community Authorization Service (CAS). It analyzes and compares the push sequence pattern and pull sequence pattern. Authorization mechanism based on push sequence pattern solves the scalability issue of GSI quite well in some extent and improves the flexibility of the system.
Application of Compliant Mechanism on the Polishing Robot
Authors: Guo Tong Ying , Li Jie Jia , Wang Hai Chen
Published: June 2011

For polishing friable complex transparent pieces surface, compliant mechanism is used on the polishing robot in this paper. Compliant mechanisms on the polishing robot are designed and installed. Polishing experiments are carried out without compliant mechanisms and with compliant mechanisms. The experiments results show that the robot can complete better polishing tasks with compliant mechanisms, through the wrist force sensor collecting the polishing force, and controlling the proper compression height of compliant devices.
An Algorithm of Slight Moving Object Extraction in Real-Time Video
Authors: Qu Zhong , Ma Qing Wei
Published: June 2011

In this paper, we extract slight movement object of real-time video images by using skin color detection and clustering methods. The ideological of edge detection locate the range of the moving object, then by using clustering algorithm and skin color detection and some other methods extract the object template and complement the integrity of the object template, according to the object template and the original image put color onto a new background model. The simulation results show that the proposed method ensure the quality requirements of real-time processing and has a certain robustness, so this method satisfy the needs of the project.
Research on Ecological Impacts Prediction Simulation System of Coastal Waters
Authors: Guo Long , Feng Jian Feng , Zhang Xiu Feng
Published: June 2011

According to the main features of the coast, by a large number of monitoring data in the typical area, Ecological dynamics model was established, then, ecosystem dynamics was simulated and reproduced for Marine Ecological System. Examples of typical coastal engineering, the main port construction effect to coastal waters ecosystem is predicted. On this basis, we developed a user-friendly, versatile set of prediction software, and it can provide a powerful tool for ecological protection of coastal waters.
Study on the Implementation of Quadtree Index on E-Chart System
Authors: Zhang Zhong Jie , Zhao De Peng , Wang De Qiang
Published: June 2011

As embedded and mobile devices application development and many micro-computing devices need to run the e-chart system. The tree spatial index structures can efficiently organize and retrieve spatial data. This paper discusses the index to organize and retrieve e-chart data through the quadtree. We discussed the electronic chart in the two typical quadtree on the index structure, and give the comparison and analysis of experimental data.
A Novel Broadcast Algorithm of Wireless Sensor Networks Based on Multiple Objective Programming and Genetic Algorithm
Authors: Liu Zhan Jun , Liang Cheng Chao , Wang Yang , Ren Cong
Published: June 2011

Considering the restriction of physical resource and the environment, we propose a new broadcast path algorithm based on genetic algorithm and ideal point model. The proposed algorithm combines multiple constrains and utilizes the advantages of genetic algorithm in multiple objective programming. Simulation results show that the proposed algorithm reveal better performance on efficiency resource utilization.
The Study on Crashworthiness Performance of Thin-Walled Structures and the Effect of Welding Performance on it
Authors: Hao Qi , Wu Sheng Jun
Published: June 2011

Explicit finite element method is adopted to simulate the crashworthiness performance of four types of typical thin—walled structures used in vehicle by software LS-DYNA. The structures with the same material、area and length are crash by a rigid body with 40km/h in10ms, The crash processes and crashworthiness characters are analyzed by a series crash parameters: deformation energy with unit displacement, impact force and deceleration to look for the optimal shape with crashworthiness. With comparing, the double caps section has ascendant performance than the others. The simulating methods of welded-joints are discussed to analysis their effects on crashworthiness simulation.
Study on Key Influence Factors Identification Based on Multiple Linear Regression Methodology
Authors: Niu Jia Mu
Published: June 2011

With the rapid development of economy in Jilin province, people’s life standard improves steadily. There are lots of factors which influence the growth of economy. We proposed a multiple variable linear regression methodology in this paper to identify the corresponding influence factors which concerning to the growth of GDP in Jilin province. By using multiple linear regression method, the key influence factors which are concern to the growth of GDP in Jilin province are identified, which include primary industry, secondary industry, tertiary industry and buildings price. We can draw conclusions that the growth rate of GDP is positive linear correlation to tertiary industry and buildings price. At the same time, tertiary industry is a more important influence factor than buildings’ price.
A* Algorithm Based Robot Path Planning Method
Authors: Li Xiao Min , Wang Jian Ping , Ning Xin
Published: June 2011

Robot path planning is one of the core parts of robot research fields. A * algorithm is a typical heuristic search algorithm in Artificial Intelligence. In this paper, the model of robot path planning is founded based on A* algorithm and raster model, thus the optimal path is found in the process of robot traversing. The simulation result shows the correctness and efficiency of the path planning.
Properties of Porous TiO2 Films with Different Layers Coated on Glass Substrate
Authors: Zhang Wen Jie , Bai Jia Wei
Published: June 2011

Porous TiOB2B films were dip-coated on glass substrate by sol-gel process. Ti(OCB4BHB9B)B4B was used as the titanium source and PEG1000 was used as a template. Surface morphology and UV-Vis transmittance spectra were investigated as the factor of the number of TiOB2B layers. The films containing 1 to 3 TiOB2B layers seem to be quite smooth with very slight roughness. While on the surface of the films containing 4 to 6 TiOB2B layers, particles aggregated on the surface accompanied with the formation of small holes. The adsorption edges of the coated films moved to higher wavelength region with increasing film layers. In the wavelength range from 350 to 450 nm, transmittances of the films declined first and then went up when the films got thicker.
Concept Presentation Conversion for Cooperative Information Engineering
Authors: Chen Dong Mei
Published: June 2011

Concept integration, connection, and reuse are at the heart of Web services. The connection between two concepts can be achieved easily provided both share the same theorematic space. This in turn can be achieved by reusing constructs from foundational concepts and standard domain theme. Although the current produce of concept development methods and tools have made it a lot easier to build a new concept, reusing concepts from existing concepts remains difficult. The main reasons for this are the uncertainty in presentation conversions of concepts from foundational concepts. In this paper we have introduced a novel method for sense certainty to help the human expert in presentation conversion.
Studies to the Coal Gas Draining Feasibility and Potential Evaluation
Authors: Hui Chun Wei
Published: June 2011

The coal mine gas can cause gas explosion and gas outburst, which is a direct threat to the safety of coal mine production. The gas drainage technology is the highlights in the research of highly gassy mine and coal and gas outburst. Coal gas drainage in the coal mine area includes ground gas development and underground gas drainage. Therefore, the evaluation to the draining feasibility of the coal gas should also be divided into ground coal gas development and underground gas drainage. Draining feasibility of the gas refers to the draining extent in a certain area and the possibility of the development under existing economical situations. By general analysis to the geological parameter that influences the draining feasibility, the drainage area will be optimized in this paper. With the reservoir bed data analog technology, the draining feasibility of the coal gas in the DaFosi field and its draining protential will the evaluated in this paper.
A Survey for Concept of Embedded Systems
Authors: Liu Li Min
Published: June 2011

Embedded systems are the most popular computer application systems. Their applications have changed life of people in the world. They can be found anywhere, and almost can be used in every field. But few people know the concept of an embedded system. In this paper, the concept and definition of embedded systems are discussed and analyzed. A considered concept of embedded system should include several factors, computer core, to build in, managed object and relevant software, despite to issue a consistent definition is difficult.
Characteristic Analysis of Metal Trough Faces Cut by Pre-Mixed Abrasive Waterjet
Authors: Nie Bai Sheng , Zhang Ming , Meng Jun Qing , Wang Hui , Zhang Ru Ming
Published: June 2011

In order to improve the cutting efficiency of abrasive waterjet (AWJ), the relationship between pre-mixed AWJ cutting depth and pressure was experimentally studied. Then, through analysis of the cutting results, the topographic characteristics and formation mechanism of the cut trough faces were investigated. Moreover, through comparing the effects of different jet pressures on the topographic characteristics of AWJ cut trough faces and the SEM analysis of the cut trough faces at different pressures and depths, the effects of pre-mixed AWJ cutting mechanism on the characteristics of cut trough faces were investigated, and the characteristics of the trough faces of metals cut by pre-mixed AWJ were analyzed.
Evaluation of Safety Risk in ATM Based on the Gray Relational Analysis
Authors: Chen Ya Qing , Li Shi Gang , Liu Guo Yi
Published: June 2011

As one of three civil aviation systems, the Air Traffic Management (ATM) system plays a very important role in security of civil aviation. This paper established the safety risk evaluation index system for ATM. According to the Gray Relational Analysis (GRA), the paper calculated the correlation coefficients and correlation degree between the safety risk in ATM and the first level factors, and the correlation coefficients and correlation degree between the first level factors and corresponding second level factors. The results show that human factor which has been greatly impacted by poor safety awareness contributes main reason to safety risk in ATM. This paper provides ATM units with recommendations to establish risk management programs.
Study of Valveless Micro Pump Based on MEMS Technology
Authors: Liu De Hui , Liao Gao Hua
Published: June 2011

Structure and work principle of micro pump developed with shape memory alloy (SMA) materials are introduced. The math model is established to analyze the basic performance parameters. The pressure distributions of the diffuser and the nozzle of valve-less micro-pump were analyzed theoretically,the basic flow equations were obtained.The finite element method was applied to calculate the velocity and pressure fields of the diffuser and the nozzle numerically,and the factors which influences the flow characteristic of the valve-less micro-pump were investigated. Simulating the actuator deformations of the micro pump, The feasibility of the operation prineiple and design method of the valveless Pump driven by the SMA actuator has been Proved by the analysis and test results.The result shows that the micro pump based on SMA materials has some advantages of fast response, large flex displacement and high control precision ,etc.
Study on a Website Protection Strategy Based on Network Survivability with Effective Web Materials System
Authors: Liu Jian Bo
Published: June 2011

Through the research on the network survivability, this paper proposes a website protection strategy based on network survivability from the angle of fine management, in which the paper makes the website server to ensure uninterrupted service under attack and improve the stability of network operation. At the same time this paper proposes a framework for website protection from the perspective of data protection and file protection in order to achieve network survivability. Finally, in accordance with the proposed protection system architecture and strategy, this paper builds the network environment and emulation of illegal attacks, the experiment results show that this strategy can protect the stable operation of the website, and the survivability of website can be reflected.
Fuzzy Neural Network Applied in Sensorless BLDC Motor Control Based on MC56F8013
Authors: Wang Li Huo , Yao Wei , Hu Ke Wei , Zhang Wei
Published: June 2011

This paper describes Freescale company’s DSP device MC56F8013 implementation of a control method for sensorless BLDC motor, which is according to fuzzy neural network. The inductance of stator core varies according to the variation of rotor position, and the rotor position can be estimated with the variation of current response caused by six direction voltage vectors. Then use fuzzy neural network PI control method to optimize the dynamic performance, accelerate the rotor to a certain speed, and switch to EMF mode. The experiment results show that the proposed method can have fast response, strong robustness and superior performances.
Research of Face Identification Method Based on Geometric Feature Extraction and the Enlargement of Image Interpolation with Scientific Image Materials
Authors: Ni Jian , Li Yu Duo
Published: June 2011

To achieve human face identification, this paper adopts the method of geometric feature extraction and the enlargement of image interpolation on the basis of the completion of face detection. First of all, the input digital image will be normalized to reduce the complexity of the image, and then the feature of human face will be extract. With the feature information extracted, we can construct the feature vector and assign different weights to different feature vector. Weight is interpreted as the EXP obtained after a large amount of training experience is gained. Finally, to get the similarity of picture, the bilinear interpolation method is adopted on the basis of the nearest interpolation. Thus, we will get the results of face identification according to the similarity quality. Through the development and implementation of practical programming, this paper proves the feasibility of such method.
Research on Improved Clustering Algorithm on Web Usage Mining Based on Scientific Analysis of Web Materials
Authors: Li Bin , Yang Jin , Liu Cai Ming , Zhang Jian Dong , Zhang Yan
Published: June 2011

Clustering analysis is an important method to research the Web user’s browsing behavior and identify the potential customers on Web usage mining. The traditional user clustering algorithms are not quite accurate. In this paper, we give two improved user clustering algorithms, which are based on the associated matrix of the user’s hits in the process of browsing website. To this matrix, an improved Hamming distance matrix is generated by defining the minimum norm or the generalized relative Hamming distance between any two vectors. Then, similar user clustering are obtained by setting the threshold value. At the last step of our algorithm, the clustering results are confirmed by defining the clustering’s Similar Index and setting sub-algorithm. Finally, the testing examples show that the new algorithms are more accurate than the old one, and the real log data presents that the improved algorithms are practical.
Quantitative Analysis and Study of Coal Mine Underground Environment Gases Based on the FTIR
Authors: Li Yong , Sun Yong , Wang Lian Cong
Published: June 2011

Coal mine underground environment gases gas composition is very complicated, especially coal self-ignition different oxidation stage symbol of mine gas and release of period of reckoning produce of the coal mine enterprises poisonous and harmful gas production safety, caused great harm to the mine production period and needed after the reckoning mine air composition for monitoring. Existing gas chromatographic analysis is slow and not on-line analysis problem, sensor use short-lived, need often set-up insufficient, we put forward such a kind of brand-new based on the Fourier transform infrared spectrometer (FTIR) in-well environment gas analysis method. Combining with gas absorption spectral characteristics and analysis from spectrometer parameter selection, request the sample gas preparation, feature extraction and analysis model is established in variable introduces a set of effective coal mine underground environment gas spectral analysis method, and then gives C2H6, C3H8, CH4, i-C4H10, n-C4H10, C2H4 C3H6, C2H2, SF6, CO and CO2, the test results. The results showed that the FTIR spectrometer in spectral resolution for 1cm-1, optical path for 10cm circumstances, all gas resolution than 2x10-6, meet mine environment gas detection requirements. This shows that the infrared spectrum analysis is a potential mine environment gas analysis, this paper party could realize technology of coal mine underground environment gas on-line analysis.
Design of Current Temperature Transmitter Circuit
Authors: Chen Shu Wang , Wang Shu Hai , Xie Xiao Qin
Published: June 2011

The temperature transmitter is a kind of device circuit, which is made up of temperature sensor and assistant electronic circuits. It can change temperature signal into electric signal. The paper introduces a two-wire current temperature transmitter which consists of platinum resistance and the new type integrated chip-AD693. It mainly analyzes the theoretical basis of the system and chooses an appropriate hardware implementation scheme. This paper analyzes the basic principle of temperature transmitter and the composed units of current temperature transmitter, chooses and calculates the circuit modules components, finishes the systematic design of electric circuit schematic.
Design of Data Acquisition Based on Linux
Authors: Wang Shu Hai , Chen Shu Wang , Shao Jian Song
Published: June 2011

In recent years, data acquisition technology is more widely used in industrial. This paper introduces a data acquisition system based on linux OS. The data transmission follows USB2.0 protocol. The hardware is mainly composed by CY7C68013 and MAX1195. CY7C68013 is a high-speed USB peripheral controller produced by Cypress Semiconductor Corporation. Max1195 is a dual and high-speed analog-to-digital converter. Hardware construction and driver program design of this system are particularly recommended in this paper. This system can be used in electronic test and biological engineering.
Research on Information System Platform of Virtual Organization
Authors: Tu Jian Fei
Published: June 2011

Virtual organization is an important form of the cooperation between enterprises. Information technology is the technological base of the efficient and orderly operation of the virtual organization. This article, through the analysis of the demand in information system platform of horizontal integration, vertical integration and other different operation processes of virtual organizations, puts forward the structure of the information platform constituted by application service layer, support security layer and communication network layer, and does deep analysis of the composition content of different layers.
3D Finite Element Analysis of Single Span Special-Shape Arch Bridge with Diagonal Crossing Arch Rib and Curved Girder
Authors: Peng Xia , Wang Xing Nai , Gui Xue
Published: June 2011

Yueniang bridge is curve, slope and slant single span special arch bridge with diagonal crossing arch rib and curved girder. A spatial finite element analysis method was used in this paper. Static characteristics and stability was analysis and discussed by means of modeling, discrete element and determination. Concrete measures for suspender of curved bridge were also advanced. It can provide a reference for design of similar bridge.
How to Apply Dynamic Optimization into Intertemporal Investment
Authors: Wu Zhong Qun
Published: June 2011

The most important feature of cascaded hydropower investment, intertemporal optimization, is neglected to some extent. This paper focuses on how to make an optimal decision on intertemporal investment based on the case of cascaded hydropower. I incorporated intertemporal investment and financing constraints in dynamic programming, and proposed a new objective function. As a result, an intertemporal optimal dynamic model is established. The model highlights the fundamental framework of dynamic programming on cascaded hydropower development. The framework is robustly suitable to improve investment efficiency with respect to intertemporal optimization.
A Method of Network Security Situation Prediction Based on Gray Neural Network Model
Authors: Liu Nian , Li Geng , Liu Yong
Published: June 2011

In this paper, a new network security situation intelligent analysis prediction method is proposed, which applies GM(1,1) model and BP neural network model in the analytic prediction field of network security situation information, and combination and optimization is performed to it to improve the accuracy of network security situation prediction. By analyzing and calculating the great amount of information acquired from network security situation evaluation system, it is able to make prediction on the current security situation of network system and the its future change trend, and make and implement relative response strategy according to prediction results, and reduce the harm from network attacks and improve the emergency response ability of network information system, so that we can make preparation before great damage occurs and reduce or avoid any possible attack to ensure the smooth running of system. The experiment results show that this method is a better solution for network security situation prediction.