bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Development of Simple and Instant Communication Tool
Authors: Qu Xi Long , Xiao Lei
Published: February 2011

Instant Message is currently the most popular way to communicate on the Internet, so various Instant Messaging software are continuously appearing; Service providers offer more and more communication service nowadays. Java programming language (Java 2 Standard Edition) is one of popular programming languages. With its features of cross-platform, security, multi-threaded capability, Socket Programming, data flow concepts and so on, Java has its own distinctive and functional advantages. Therefore, based on the research and analysis of LinuxQQ, with the Java language and J2EE, this paper designs an instant messenger—JICQ (Java for I seek you), and then analyzes its architecture, modules, as well as its key technologies. During the design and modeling process of instant messenger system, the UML and method of object-oriented analysis and design are used. Furthermore, the modeling tool of Rose is included. Based on the system j2se1.5, j2ee1.4, the Eclipse development tool in the development process, and refactoring development method, the system design is optimized. Due to these factors, the system is safe, efficient and practical in different operating system platforms.
Numerical Simulation of Mechanical Behavior on Landslides Triggered by Heavy Rainfall
Authors: Ni Zhen Qiang , Kong Ji Ming , Fayou A.
Published: February 2011

Deformation instability of slope due to rain was one of the most common geological disasters. Speaking from the mechanism, the destructive action and triggering action of rainfall affected the stability of slope itself, which made the slope deform and even lead to instability. June 28, 2010, Guanling in Guizhou province a large landslide occurred which triggered by continuous heavy rainfall, it caused that in two village-groups 107 villagers were buried, all the tragedy of houses were completely destroyed. Using finite element software ANSYS to simulate the mechanical behavior of the landslide, to analyze the deformation mechanism, we got that the large landslide deformation mechanism was a complex mechanical geological process. From the analysis of interaction between soil and rock, the landslide showed complex mechanical geological features. As rainfall increased the strength of unsaturated soil and weak intercalation reduced, this strengthened the role of the slope deformation and failure. The lock-fixed section first appeared brittle fracture, then that brought shear failure to the creeping section. The interaction between lock-fixed section and creeping section was the key of slope failure.
Impact and Control of Environmental Vibration on Precision Instruments
Authors: Gu Zheng Wei , Zhong Tie Yi , Zhang Ming Bo , Zhang Kun
Published: February 2011

In this paper, the impacts of environmental vibration on precision instruments as well as the vibration allowances of precision instruments are introduced firstly. Then the integrated model of a high-rise building is established, and the vibration responses of the floor where a precise instrument is fixed are calculated by inputting micro-vibration loads. The passive control method is used by putting several lead rubber bearings at the bottom of instrument and at the bottom of building separately, and the isolated vibration responses are calculated and analyzed. Some valuable conclusions are obtained by comparing the vibration responses of isolation system and non-isolation system with acceptable values according to the environmental vibration codes for precise instruments.
Assessment of the Performance of Modal Based Decoupling Method in Identifying Structural Joints Characteristics
Authors: Jahani K. , Nobari A.S.
Published: February 2011

In this paper, the performance of modal based decoupling method in structural joint identification is investigated. This method does not need any iteration and is independent from updating techniques. Because of these advantages, in present work it is tried to assess the effect of experimental and numerical issues of using modal data in this method. Issues such as effect of number of digits of precision of modal pairs, effects of lower hand higher eliminated modes, effect of any normalization of modal vectors and effect of possible noisy experimentally extracted modal parameters on identified joint characteristics are studied through some case studies.
Code Reuse in Gene Expression Programming
Authors: Li Qu , Yao Min , Wang Wei Hong , Du Yan Ye
Published: February 2011

Gene expression programming (GEP) is a kind of phenotype/genotype based evolutionary computation. Code reuse is an important issue in GEP. Various methods are used in current literature to achieve this task. In this paper, we compared six GEP based algorithms by experiments. We proved that although it’s possible invent different kinds of code reuse strategies, current available strategies are powerful and efficient.
Analysis of Fault Tree Base on Uncertain Optimistic Value
Authors: Liu Jian Jun , Ning Yu Fu
Published: February 2011

Based on uncertainty theory, this paper proposes a method that constructs and analyzes fault tree. In this paper, it would be characterized as crisp number if fault rate of bottom event is obtained from reliable handbook, empirical data and so on; it would be characterized as uncertain variable if fault rate of bottom event has no statistical data but is obtained from expert's subjective judgment. The optimistic value of overall system’s top event is calculated by using uncertain simulation technology. Finally feasibility and validity of this method is confirmed by taking fault tree of internal combustion engine as example.
Research on E-Commerce Platform and Modern Logistics Management System Based on Knowledge Management Platform
Authors: Cao Xu Hua , Wang Fu Zhong
Published: February 2011

For the stored data of E-commerce platform and modern logistics management system, which is very difficult to form knowledge’s continuity and inheritance, about its researches on the related fields are insufficient, so the paper proposes an idea of constructing E-commerce platform and modern logistics management system based on knowledge management platform. Moreover, for a practical example, the paper introduces its application.
Chance-Constrained Programming EOQ Model Based on Uncertain Measure
Authors: Rong Li Xia
Published: February 2011

This paper provides chance-constrained programming EOQ (Economic Order Quantity) model for inventory based on uncertain measure. In the model, the ordering cost, shortage cost and holding cost per unit are assumed uncertain variables. When the parameters are some special uncertain variables with uncertainty distribution such as linear uncertain distribution and normal uncertain distribution, the model can be transformed into crisp equivalent programming. To illustrate the effectiveness of the model, some numerical examples are provided.
The Design of E-Yuan Home Multimedia System
Authors: Feng Wei Chang
Published: February 2011

E-Yuan Home multimedia system is used to help user to enjoy, search and integrate the plenty of multimedia resource on the internet. It used TV as the output device and user can watch the multimedia resource at real-time. It’s fully controlled by a remote controller and also has a very friendly user interface. This article introduces its infrastructure, main technical ideas and you can also see some details about the remote control driver and how to solve the garbled characters problem.
Incomplete Concept Lattice Data Analytical Method Research Based on Rough Set Theory
Authors: Wang Jin Peng , Liu Bao Xiang , Li Zhen Dong , Feng Li Chao
Published: February 2011

Concept lattice and rough set are powerful tools for data analyzing and processing, has been successfully applied to many fields. However, the decision information is incomplete in many information systems. In this paper, the definition of incomplete concept lattice has been proposed, and some relation established between imperfect concept lattice and rough set. As is very important that the paper gives a new attributes reduction algorithm about incomplete concept lattice aims at the matter of the inefficient of reduction strategy based on discernibility matrix. Comparing with the attributes reduction for incomplete concept lattice which based on discernibility matrix, this reduction algorithm, reduces the spatial-temporal complexity.
Positive Solutions for the nth-Order Delay Differential System with Multi-Parameter
Authors: Lu Qiu Ying , Zhang Wei Peng
Published: February 2011

In this paper, we are concerned with the existence of positive solutions for the nonlinear eigenvalue problem of the nth-order delay di erential system. The main results in this paper generalize some of the existing results in the literature. Our proofs are based on the well-known Guo-Krasnoselskii xed-point theorem. Three main results are given out, the rst two of which refer to the existence while the last one not only guarantees to its existence but also is pertinent to its multiplicity.
Least Squares Skew Bisymmetric Solution for a Kind of Quaternion Matrix Equation
Authors: Yuan Shi Fang , Cao Han Dong
Published: February 2011

In this paper, by using the Kronecker product of matrices and the complex representation of quaternion matrices, we discuss the special structure of quaternion skew bisymmetric matrices, and derive the expression of the least squares skew bisymmetric solution of the quaternion matrix equation AXB =C with the least norm.
A Study on the Acceptance and Use of Handheld E-Book Readers
Authors: Ma Jian
Published: February 2011

This paper proposes a new model to test the technology acceptance model which proposed by Davis in order to study the influence factors on acceptance and use of handheld e-book readers. The main conclusions are as follows: 1.There are significant correlation between self-efficacy and usefulness, without significant correlation between self-efficacy and other variables; 2.There are significant correlation between product feature and intention to use, without significant correlation between product feature and other variables; 3.There are significant correlation between usefulness and ease of use as well as intention to use, without significant correlation between usefulness and other variables; 4.There are significant correlation between ease of use and usefulness, without significant correlation between ease of use and other variables; 5. There are no significant correlation among intention to use, self-efficacy, product feature, usefulness and ease of use.
Fuzzy Vibration Control of Flexible Solar Panel Using Piezoelectric Stack
Authors: Xu Rui , Li Dong Xu , Jiang Jian Ping
Published: February 2011

To effectively suppress vibrations of the flexible solar panel, the fuzzy logic control with piezoelectric smart structure is studied. The bending moment induced in the solar panel by the PZT stack actuator is formulated. The dynamical equations of the solar panel are derived. A fuzzy logic controller which uses universal fuzzy sets is designed. Considered the characteristic of the PZT stack, only positive control voltages were loaded to it. The finite element method simulation results demonstrate that the fuzzy logic controller can suppress the vibrations of the flexible spacecraft solar panel effectively.
Vacuum Casting Automatic Control System Based on Configuration Software
Authors: Huang Jie , Liu Yuan Yuan , Zhang Hai Guang , Chi Zhao Fu , Hu Qing Xi
Published: February 2011

Bubbles and craft parameters in vacuum casting are the key factors to the quality of products. How to eliminate bubbles and set optimal parameters are the key technical problems to the automation development of vacuum casting. This paper advances a new vacuum casting automatic control system based on configuration software. Dynamic data exchange（DDE） among control module, detection module and execution module is realized based on the strong capability of communication and human-machine interface in configuration software. The realization of this control system can effectively eliminate bubbles and provide corresponding optimal craft parameters automatically and intelligently. In a word, the efficiency and quality of the products can be improved and the dependency of experience parameters can be reduced in vacuum casting.
Solving Two-Person Zero-Sum Game by Matlab
Authors: Yang Yan Mei , Guo Yan , Feng Li Chao , Di Jian Yong
Published: February 2011

In this article we present an overview on two-person zero-sum games, which play a central role in the development of the theory of games. Two-person zero-sum games is a special class of game theory in which one player wins what the other player loses with only two players. It is difficult to solve 2-person matrix game with the order m×n(m≥3,n≥3). The aim of the article is to determine the method on how to solve a 2-person matrix game by linear programming function linprog() in matlab. With linear programming techniques in the Matlab software, we present effective method for solving large zero-sum games problems.
Effects of Overburden on Deformation and Failure of Anti-Dip Slopes under the Action of Seismic Load
Authors: Fayou A. , Kong Ji Ming , Tang Yu , Ni Zhen Qiang , Cui Yun , Tian Shu Jun
Published: February 2011

A large number of mountain disasters were induced by Wenchuan Earthquake, and as one type of them, the deformation and failure modes of anti-dip slopes were influenced by overburden. Under the condition of no overburden, the collapse will mainly occur; while under the overburden condition, it is the shallow slump mainly occured. Taking the landslide of Wangjia Mountain in Longmenshan Town, Pengzhou City as an example, the anti-dip slopes were stimulated by using the finite element method in this study, where the influences of overburden on deformation and failure of anti-dip slopes were analyzed under the static condition with seismic load effect. The related analysis showed that significant influences of overburden existed on the deformation and failure of slopes, resulting into great increments of slope displacement, stress and sliding distance. The analytical results were consistent with the characteristics that the large-scale deformation and failure of anti-dip slopes mainly occurred on the slopes with overburden in the Wenchuan Earthquake.
Preliminary Discussion on the Applications of Cloud Computing in the Bank System
Authors: Huang Zhi Qin , Zhang Jin Li , Zhou Hui Zhen
Published: February 2011

Cloud computing with its powerful feature has been used preliminary in some commercial areas in the world, cloud computing also is used in IT industry, and it is a new revolution in IT industry. Cloud computing is of great concerned for its characteristics of the security and reliability of data mass storages and the low requirement on the customer premise equipment, especially in the financial industry. This paper describes the basic concept, characteristics and development status of cloud computing, and on the basis, the application of cloud computing in the banking industry is discussed, and the possible problems are pointed out.
A Novel Heat Sink for High Power Light Emitting Diode-Phase Change Heat Sink
Authors: Xiang J.H. , Liu Xiao Chu , Zhang Chun Liang , Tang Yong
Published: February 2011

A novel heat sink was fabricated for packaging cooling of high power LED. Enhanced boiling structures in the evaporation surface were processed by ploughing-extrusion (P-E) and stamping methods, respectively. The cycle power of refrigerant was supplied by wick of sintered copper powder on internal surface of phase change heat sink. The experimental results showed that phase change heat sink was provided with a good heat transfer capability and the temperature of phase change heat sink reached 86.8°C under input power of 10W LED at ambient temperature of 20°C.
Aggregate Constraint Homotopy Method for Nonlinear Programming on Unbounded Set
Authors: Xiao Yu , Xiong Hui Juan , Yan Zhi Gang
Published: February 2011

In [1], an aggregate constraint aggregate (ACH) method for nonconvex nonlinear programming problems was presented and global convergence result was obtained when the feasible set is bounded and satisfies a weak normal cone condition with some standard constraint qualifications. In this paper, without assuming the boundedness of feasible set, the global convergence of ACH method is proven under a suitable additional assumption.
Infinite Time Interval BSDEs Driven by a Lévy Process
Authors: Zheng Shi Qiu , Yang Ai Min , Gong Dian Xuan , Liu Qiu Mei , Peng Ya Mian
Published: February 2011

In this paper, we study the infinite time interval backward stochastic differential equations (BSDEs) driven by a Lévy process. A existence and uniqueness theorem for solution of the BSDEs is established, which can be considered a generalization of existence and uniqueness theorem of BSDEs. A continuous dependence theorem for solutions of the BSDEs is also given.
Dynamic Instability Mechanism and Vibration Control of Radial Gate Arms
Authors: Liu Ji Liang , Wang Zheng Zhong , Fang Xing , Fang Han Mei
Published: February 2011

The failures of the low head radial gates for hydraulic structures are commonly caused by the dynamic instability of arms (struts) under dynamic loads during gate opening and closing operations. For understanding the dynamic instability mechanism of radial gate arm, the dynamic stability of radial gate arm with I-section was analyzed with the consideration of bending, torsion and warping by using parametric resonance theory, and the boundaries of main dynamic instability regions were obtained. In order to avoid severe vibrations of radial gate arms, two vibration control measures were proposed. The study provides useful and valuable information for design and safe operation of radial gates.
Experimental Study on Collaborative Work Performance of Multi-Functional Vibration-Absorption Structure to Enclosing Wall
Authors: He Ming Sheng , Shi Gui Ju , Zheng Jun Wei
Published: February 2011

Multi-functional Vibration-absorption Structure to Enclosing Wall (MVEW) is a new type of vibration absorption technology. In the structure, by the combination of frame filled wall, TMD and vibration absorption system, advantages of each part are used. To understand collaborative work performances of MVEW in minor earthquakes, 1/2 scale model of MVEW with two layers and one span is designed, and be carried out under three work situations(frame structure ,100mm and 200mm thickness enclosure wall), and monotonous lateral load tests were carried out. The result indicates that the shearing force bear by enclosing wall increase as the height increasing, similarly, it decrease by height increase for frame column. As the existing of enclosing wall, the stiffness and bearing capacity of MVEW are stronger obviously than frame structure. And when brittle compressive components are set at the top and bottom of the wall, the lateral force bear by the wall will be higher obviously than only setting (brittle compressive components) at the top of the wall, which showing that the wall will bear more lateral load by increasing touch point between enclosing wall and the column.
Analysis on the Influence Factors of Multi-Functional Vibration-Absorption Enclosure Wall Structures
Authors: He Ming Sheng , Zheng Jun Wei , Shi Gui Ju
Published: February 2011

Enclosure wall multi-functional vibration-absorption structures (MVEW) is a new style of damping structure, it integrates the merits of infilled frame, tuned mass control (MTMD) and the energy dissipation structures. The main influence factors of MVEW is analyzed in the paper, The results indicate that there are optimal value of the mass ratio, the stiffness ratio and the damping ratio of substructure in MVEW, and the damping effect become obvious as the increase of the number of substructure, it also shows that the best location ought to synthetically consider the number of substructure, the tuned frequency ratio and control mode instead of being fixed. In the end, the paper proposed the determine principle of the damping device’s performance parameters as well as necessary optimization of MTMD parameters according to the specific case of actual structure1.
Research on Impedance Characterization of Triple-Layer Piezoelectric Bender
Authors: Gong Li Jiao , Li Jiang Quan
Published: February 2011

The use of piezoelectric material as transducer is prevalent. Piezoelectric bending mode element can be used for vibration energy harvesting because it can convert mechanical energy into electrical energy. In this article, electrical impedance characterization and equivalent circuit of triple-layer piezoelectric bender are discussed. Triple-layer piezoelectric bending device is fabricated, measured and modeled. This paper is aimed to explore simple but practical equivalent circuit models, expressed using electrical parameters of triple-layer piezoelectric bender and investigate the applicability of the Van Dyke circuit model and the complex circuit model in modeling the specimen’s equivalent circuit. The models produced impedance curves that closely matched the impedance measured for piezoelectric sample. The impedance characterization can provide a good understanding on the electrical behaviors of the triple layer piezoelectric bender when analyzing the performance of piezoelectric device.
Stocks Network Analysis Based on Visualization
Authors: Lan Wang Sen , Zhao Guo Hao , Hou Li Jun
Published: February 2011

In order to explore interactions among stocks, a weighted complex network was modeled, whose nodes were stocks, connection between nodes was established by their correlation, and the weight on corresponding edge was their correlation coefficient. The article analyzed some influence behaves among stocks by using visualization method, and gave some algorithms to find out network maximum spanning tree and core network. The result shows that the network is scale-free, nodes coupling are of homology, and some nodes are of strong influence on others.
Vibration of Double Cable Suspension Bridge under Vehicle Load
Authors: Ding Nan Hong , Lin Li Xia , Liao Wei Hua
Published: February 2011

A single moving mass-spring-damper model is adopted to simulate the vehicle model. The equation of vehicle-bridge coupling vibration is derived, using D'Alembert principle and the conditions of displacement compatibility. The dynamic responses of a double cable suspension bridge to the vehicle moving at different speeds are analyzed, considering the geometric nonlinearity and the bridge carriageway irregularity factor, under two types of vehicle loading conditions, namely moving along the center and the eccentric longitudinal axis. Then the influence of vehicle velocity and bridge carriageway irregularity on impact coefficient of double cable suspension bridge is discussed. Single cable suspension bridge can be taken as a special case of double cable suspension bridge, after the main cable shape coefficient is introduced. The dynamic responses of double cable suspension bridge and single cable suspension bridge are compared to reveal the character of vehicle vibration of double cable suspension bridge. The study of the dynamic responses character of double cable suspension bridge has a positive significance on structural form selection of such type bridge during designing, dynamic performance evaluation and vibration control.
Chasing Models under Different Conditions in Anti-Smuggling Problem
Authors: Cao Jian Li , Guo Xiu Lan
Published: February 2011

Chasing problem is not only a common problem in reality including the classical Turtle Rabbit Race problem, but also a representative mathematical model which has widely application. In this paper, we study chasing models in some cases appearing in anti-smuggling problem. Different conditions are given to restrict the escaping and chasing way, thus more common situations are discussed and some new meaningful results are obtained.
Study of Dry Sliding Friction and Wear Characteristic of High-Speed Steel/ Ti6Al4V Alloy under Direct Steady Magnetic Field
Authors: Wei Yong Hui , Zhang Yong Zhen , Chen Yue
Published: February 2011

The influence of DC steady magnetic field on dry-sliding friction and wear characteristics of friction pair of high-speed steel (HSS) ring / Ti6Al4V pin is studied by use of improved MPV-1500 type under normal temperature. It is shown that the wear loss of ferromagnetic materials can be decreased by applying a steady magnetic field. Under the load of 250N and the friction velocity of 0.6m/s, the wear loss of the sample HSS ring keeps decreasing along with the enhancement of magnetic field intensity, and in the scope of 64mT-160mT, the average friction coefficient becomes smaller and smaller. Magnetic field can accelerate debris refinement. The wear mechanism covers oxidative wear and adhesive wear mainly.
Dynamic Modelling and Analysis of Rectangle-Shaped Plastic-Coated Slideways in Machine Tools
Authors: Zhang Jian Fu , Wu Zhi Jun , Feng Ping Fa , Yu Ding Wen
Published: February 2011

The plastic-coated slideways have been widely used for form-generating movement in machine tools. Its dynamic behavior plays an important role in the vibration properties of the whole machine. In this work, according to the situation that researches on this subject were rather insufficient, a theoretical research was analyzed concerning the stiffness and damping characteristics of rectangle-shaped plastic-coated slideways. The mathematical model was firstly suggested especially based on the assembly of the saddle and worktable. Both stiffness and damping characteristics on vertical and horizontal directions were theoretically determined. To derive the governing motion equation of the slideway system, the carriage and rail were considered as rigid bodies and connected with a series of spring and damping elements at the joint face. Moreover, through the Lagrange’s approach, the frequencies of the carriage at vertical, pitching, yawing and rolling vibration mode were identified.
Simulation of General 3D Virtual Stochastic Road Model
Authors: Lin Min , Zhang Xiang Wei , Cheng Si Yuan
Published: February 2011

In order to provide the research of virtual prototype a complex 3-D virtual road environment based on a new method，a 3-D Pseudo Excitation Method stochastic road model was established based on the single-point Pseudo Excitation Method model, and then the simulation result was gained by Matlab.What’s more，based on the theory of triangle network，a general 3-D virtual road model with the arithmetic of nodes and elements was created.Then a specified 3-D virtual road file was imported into Adams to form the 3-D virtua1 road. Finally, a C-level virtual road was generated for the riding performance simulation of virtual vehicle.By comparing the simulation result with the GB／T 13441-92，the virtual vehicle’s reasonable time under the ride performance requirement was obtained.
Principal Component Analysis the Economy of Shanghai in 2010
Authors: Guo Xiao Qiang , Li Zhen Dong , Hao Dong Dong , Xie Xin , Wang Jian Min
Published: February 2011

This paper from the economic analysis, quantitative evaluation of the 2010 Shanghai World Exop impact. First, from the short-term and long-term benefits of the two considerations, the loss of earnings, base construction costs on the percentage of total funding, permanent building retained, the number of daily tours, the number of participating countries for the evaluation index, subjectively weight to the five indicators，calculate its scores to rank for five World Expos including Shanghai World Expo. Second, using principal component analysis, we get the five indicators of objective weighting and ranking for above five World Expos. The results show that the Shanghai World Expo will boost the economic development and has a huge influence on the economy
Game Analysis of Preventing Conspiracy in Construction Project
Authors: Feng Li Chao , Liu Chun Feng , Yan Shao Hong , Yang Ai Min , Wang Jin Peng
Published: February 2011

With rapid growth of national economy, infrastructure construction maintains its vigorous development, but there are some serious problems in this field, for example, construction unit and supervision unit may conspire together to swindle governmental capital. This paper introduces some background which exists in construction project management system, analyses relation and benefit of project’s tripartite main body, and establishes conspiracy game’s utility matrix of construction unit and supervision unit by introducing game theory. By establishing conspiracy game model between construction unit and supervision unit, the paper mainly discusses conspiracy action which may occur between construction unit and supervision unit (rent-seeking and rent-creating), gets equilibrium probabilities of seeking rent and creating rent, and make some further analysis.
Solution to China’s GDP Prediction Problem by BP Neural Network
Authors: Li Juan , Ya Ya Feng , Wu Hai Ming
Published: February 2011

Because the choice and important of learning rate , the higher of η and the faster convergence it will be, but it may cause instability or function vibration if is too high; if is lower, although it may avoid instability, the speed of function convergence will reduce. In order to solve the contradiction, we introduce a variable of , and if the this time is the same as that of the previous time, the weighted summation value will increase and it results in the regulation speed of right value at the stable regulation; and if the this time is contrary to that of the previous time, it indicates that a certain vibration and now the result of summation will make the value of decrease to play a role in stability and increase the speed of function convergence.
Research of Genetic Algorithm for Parabolic Equation Inverse Problem
Authors: Peng Ya Mian , Zhou Guan Chen , Zhao Hui Juan
Published: February 2011

It is difficult to solve the inverse problem because it always ill-posed. This paper introduced a new approach based on Genetic Algorithms (GA) for solve the parabolic equation inverse problem. The GA transforms the inverse problem into an optimization problem. The results of numerical simulation show that the method has high accuracy and quick convergent speed. And it is easy to program and calculate. It is worth of practical application.
Convergence Theorems for a Finite Family of Strictly Asymptotically Pseudocontractive Mappings in Q-Uniformly Smooth Banach Spaces
Authors: Zhang Huan Cheng , Yang Ai Min , Peng Ya Mian , Qu Jing Guo
Published: February 2011

Let E be a real q-uniformly smooth and uniformly convex Banach space and K a nonempty closed convex subset of E. Let Ti : K ! K, i = 1; 2; : : : ;N be ki-strictly asymptotically pseudocon- tractive mappings with \N i=1F (Ti) 6= ;, where F(Ti) = fx 2 K : Tix = xg. Let fxng be the sequence generated by xn+1 = (1 ¡ ®n)xn + ®nTn [n]xn; where f®ng is a sequence in [0,1] satisfying certain conditions and Tn [n] = Ti n; i = n(modN). Weak and strong convergence theorems for the iterative approximation of common ¯xed points of the family fTigN i=1 are proved.
The Study of the Competition Model of Portal and Search Engine
Authors: Qu Jing Guo , Wang Dong Hua , Cui Yu Huan , Peng Ya Mian
Published: February 2011

This paper is to discuss the competition and cooperation of portal and search engine mainly by building stability model. We can use Lotka-Volterra mutualism model to describe and build cooperation model of portal and search engine, and we can use Lotka-Volterra predator – prey model with Logistic items to describe and build competition model of portal and search engine.
Tikhonov Regularization Solve Partial Differential Equations Inverse Problem
Authors: He Ya Li , Zheng Shi Qiu , Yang Yan Mei
Published: February 2011

This article discussed the partial differential equation inverse problem. Because the partial differential equation inverse is the misalignment improperly posed problem, therefore analyzed has had the improperly posed reason. To process the partial differential equation inverse correctly not well-posed ness this difficulty, obtains relies on continuously the data stable approximate solution, has drawn support from the regularization related concept and the regularization general theory.
Research of Binocular Positioning Mathematical Model Based on the Least Square Method
Authors: Liu Chun Feng , Meng Xiao Li , Zhang Huan Cheng
Published: February 2011

By giving a centroid algorithm to extract pixel coordinates of each circle in the center of a circle under the coordinates, through the coordinate transformation the image coordinates can be obtained. Based on the data obtained from above to verify the model, from the specific data of the relative error, absolute error and error propagation theory to discuss the algorithm accuracy and stability. Finally using the least square method, according to the mean square error criteria for the establishment of a minimum of three-dimensional coordinate system fixed relative position of two cameras, binocular positioning mathematical models and by discussing the nature of matrix and the relationship between the relative position of the camera to calibrate the binocular digital camera.
Canny Edge Detection Method and its Application
Authors: Liang Yan Bing , Meng Xiao Li , An Shu Jiang
Published: February 2011

Digital Cameras positioning has a wide range of application in the aspect of traffic monitoring (e-police).In this paper, the author builds and solves the mathematical model of positioning of monocular by edge detection methods and physical principles of optical imaging of Gauss, and offers a distortion error algorithm to test models, and finally sets up to solve the problem of relative position of multi-cameras. The introduction of distortion error algorithm, could be used to quantitatively examine the models in the first two steps. In accordance with the image situation of multi-image planes, the relative position between the cameras could be determined. This model of camera generates Multi-Vision Inspecting Technique of general distribution of the relative position. Relative position can be figured out if only the parameters of the pictures to be determined are available to determine the inner and outer parameters of the camera.
A (t, n) Threshold Signature Scheme Based on Factorial Decompose Theorem of Polynomial
Authors: Cai Yong Quan , Cheng Fu Lai
Published: February 2011

The traditional threshold signature scheme is a combination of the digital signature scheme and the secret sharing scheme. Any group of t (threshold value) or more players can reconstruct the secret together but no group of fewer than t players can in secret sharing scheme. Because of this property of secret sharing scheme, the current threshold signature scheme has a natural weakness in the anti-collusion attack. A new threshold signature scheme based on the factorial decompose theorem is designed successfully without the secret sharing scheme in order to get the ability of anti-collusion attacks. It not only has the property of group signature and threshold signature, but also has some good features including traceability，robustness and resisting forgery attacks.
A Parallel Evolutionary Algorithm for Job Shop Scheduling
Authors: Wang Ling , Gong Dian Xuan , Wei Chuan An , Zheng Shi Qiu
Published: February 2011

The proposed hybrid parallel evolutionary method for Job Shop scheduling with parallel machines was verified by application in a steam turbine factory. The population diversity was improved, and premature elimination of reasonable evolutionary patterns could be avoided. The results indicated that the energy consumption was saved by using this method while the limits of time and costs were satisfied.
Analysis on the Dynamic Responses of the Broken Conductors in Transmission Lines
Authors: Yang Feng Li , Yang Jing Bo
Published: February 2011

Impact loads from the broken conductors are common for transmission lines, which can bring threaten to the safe operation of the transmission lines. Dynamic analysis of the conductors in transmission lines under broken load was carried out. A finite element model of seven span conductors in transmission line was established in general software ANSYS. The insulator and the phase spacer were considered in the FEA model. The broken load case can be realized by the birth-death element method in ANSYS. Stiffness of the broken conductor or insulator element was changed to be a near zero value in a very short time. Effect of the damping property of the conductors was considered by the Rayleigh damping method. Dynamic responses of displacements at the broken points and the reaction forces of the insulators were obtained. Dynamic responses for the broken conductors with different damping ratios and bundle numbers were compared.
A Heuristic Resource Management Method in Grid Computing Environment
Authors: Fang Xian Mei
Published: February 2011

Grid is an emerging infrastructure which enables effective coordinate access to various distributed computing resources in order to serve the needs of collaborative research and work across the world. Grid resource management is always a key subject in the grid computing. We first analyze the resource management in the grid computing environment, then according to the load imbalance question in the ant colony optimization algorithm, propose an improved algorithm that suits to be used in the grid environment.
An Efficient Resources Management Model and Task Scheduling Algorithm in Grid Computing
Authors: Gao Xiao Bo
Published: February 2011

From the perspective of resource sharing, grid computing is a system ranging from small kind of network system for home using to large-scale network computing systems even to the Internet. The management of resources in the grid environment becomes very complex as these resources are distributed geographically, heterogeneous in nature, and each having their own resource management policies and different access as well as cost models. In this paper, we bring forward an efficient resources management model and task scheduling algorithm in grid computing. The simulation results show that the proposed algorithm achieves resource load balancing, and can be applied to the optimization of task scheduling successfully.
Numerical Simulation on Failure Mechanism of Rock Slope Using RFPA
Authors: Xu Nu Wen , Tang Chu Nan , Sha Chun , Zhang Ru Lin
Published: February 2011

This research applied a numerical code, RFPA2D (Realistic Failure Process Analysis) to evaluate the stability and investigate the failure mode of the high rock slope during excavations based on Strength Reduction Method (SRM). The corresponding shapes and positions of the potential slip surfaces are rationally simulated in different stages, and the related safety coefficients are obtained, which agrees well with the allowable minimum safety factors of the slope. The numerical results show that the safety coefficient drops from 1.25 at the natural state to 1.09 after excavation, and then increases to 1.35 after slope reinforcement. Moreover, the potential slip surface of the left bank moves into deep rock mass after taking support measures, which demonstrates the reinforcement is reasonable and efficient. The study shows that cracks and faults will cause crucial influences on the slope stability, and RFPA2D is a good tool to directly display the potential slip surface of the slope, which will offer valuable guidance for bolt support.
Networking Register System for Web-Press Machine
Authors: Li Mei Hong , Du Ye , Liu Ji Qiang , Zheng Xin
Published: February 2011

To resolve the color-register problem on web-press machine, a kind of networking register system was presented. Firstly, a special diamond mark was designed, which is easier to be embedded. Secondly, the high-speed cameras with external trigger signal were adopted to capture mark images under the control of synchronous encoder unit, at the same time the real-time deviation of color was obtained by analyzing the mark image. Lastly, the data of color deviation were transmitted to the press system over Ethernet. Thus, a close-loop and real-time system was built. Especially, an Ethernet solution for the press machine with many towers was proposed. According to the actual customer’s reports, waste of newspaper decreases greatly, in addition, print quality and print efficiency are both promoted.
Application of Harmonic Balance Method to Numerical Model Unsteady Viscous Flow around Oscillating Cascade
Authors: Shi Yong Qiang , Yang Qing Zhen , Zhou Xin Hai
Published: February 2011

A harmonic balance approach has been developed to compute nonlinear viscous unsteady flows around oscillating blades. The computed results using two orders harmonic balance method are compared with those by conventional dual-time stepping method. Results obtained with the present method agree well with those from dual-time stepping method, which demonstrate the ability of the present analysis method to model accurately the unsteady flow. Furthermore，the present method is highly efficient. It is about 36 times fast than conventional dual-time stepping method in the present computation. Then the effects of oscillation amplitude and reduced frequency on unsteadiness of flows are studied. The analysis exploits the fact that, (1) the hysteresis effect of unsteady flow is hardly affected by oscillation amplitude, but the first harmonic unsteady pressure across the blade is proportional to oscillation amplitude; (2) the higher the reduced frequency, the wider the range of unsteady aerodynamic forces, the more intense the hysteresis effect.
Deposition of Fluorocarbon Films by RF Magnetron Sputtering at Varying Target-Substrate Distance
Authors: Liu Zeng Ji , Ji Quan , Zhang Yu Hui , Xia Yan Zhi
Published: February 2011

The target-substrate distance has a significant effect on the morphology and the relative deposition rate of fluorocarbon films deposited by RF magnetron sputtering. The films were deposited on regenerated cellulose substrate using a polytetrafluoroethylene (PTFE) target, with argon as the working gas. The surface and fracture cross-section morphologies of the deposited films were examined by scanning electron microscopy (SEM). The average thickness of the fluorocarbon films and the relative deposition rates were calculated for varying target-substrate distances. The films had island-like structures composed of nanoscale particles, and the surfaces were not flat. The density of the particles increased and their size decreased with increase of the target-substrate distance in the range 30 to 80 mm. The relative deposition rate increased at first and then decreased with increased target-substrate distance: the optimal target-substrate distance was 50-60 mm.
Research on Intelligent Oracle Bone Fragments Rejoining Technology
Authors: Wang Ai Ming , Wang Ji Peng , Ge Yan Qiang , Liu Guo Ying , Ge Wen Ying
Published: February 2011

An dynamic suspected target fragment database based on three elements (bone block, fragment and feature) is designed to store pending oracle bone fragments to be rejoined. Oracle bone fragments images are preprocessed on the basis of texture and target/background difference, and then extracted the contour feature, regional feature and trend feature based on actual demand for oracle bone rejoining. An intelligent oracle bone fragments rejoining system prototype is implemented.
Power Transformer Fault Diagnosis Based on Least Squares Support Vector Machine and Particle Swarm Optimization
Authors: Ma Xin
Published: February 2011

Dissolved gas analysis (DGA) is an important method to diagnose the fault of power t ransformer. Least squares support vector machine (LS-SVM) has excellent learning, classification ability and generalization ability, which use structural risk minimization instead of traditional empirical risk minimization based on large sample. LS-SVM is widely used in pattern recognition and function fitting. Kernel parameter selection is very important and decides the precision of power transformer fault diagnosis. In order to enhance fault diagnosis precision, a new fault diagnosis method is proposed by combining particle swarm optimization (PSO) and LS-SVM algorithm. It is presented to choose σ parameter of kernel function on dynamic, which enhances precision rate of fault diagnosis and efficiency. The experiments show that the algorithm can efficiently find the suitable kernel parameters which result in good classification purpose.
Automatic Texture Mapping Algorithm for Plant Leaf Model
Authors: Zhao Yuan Di , Su Zhi Xun , Zhao Chun Jiang , Guo Xin Yu , Liu Yan Qi
Published: February 2011

Texture mapping of plant leaf is a challenging task because of the shape diversity. Based on the barycentric mapping parameterization method, a novel algorithm is proposed. A suitable boundary mapping is computed by automatically extracting and matching the feature points on boundaries of the mesh and image. The matching process consists of two steps, which utilize the symmetry and curvature information respectively. Through iteratively minimizing a weighted energy, the inner constraints given by users in order to make the details clearer can be satisfied by the presented algorithm. Experiments show that this robust algorithm can produce plant leaves with fine texture details and increase the realism of the models.
Intelligent Control Mining Management System in an Open Pit Based on GIS/GPS/GPRS/RFID
Authors: Gu Qing Hua , Lu Cai Wu , Jing Shi Gun , Ma Xin
Published: February 2011

Using GIS(Geographic Information System), GPS(Global Positioning System), GPRS(General Packet Radio Service) and RFID(Radio Frequency Identification), an intelligent control mining management system in an open pit has been designed and developed. A linear programming model is set up in a practical application. By the model, the system can automatically draw up production plan of ore blending well every day. The system can monitor and dispatch open-pit trucks and shovels well, and can play back their historical paths. It can monitor and control the process of mining production in real time. By RFID, The system can also count the number of trucks’ delivery and shovels’ loading automatically. Experiments on real scenes show that the performance of this system is stable and can satisfy production standards of ore blending in open pits.
Status of Electromagnetic Compatibility Research and Technology Application in some Areas
Authors: Zhao Hong , Li Yang , Zheng Shun Li , Yu Li Jun
Published: February 2011

Although still in its primary phase up to now, the research about the application of EMC technology in engineering field has become more and more noticeable. In this paper the main subjects for EMC research are introduced, then some hot research topics concerning the EMC technology application are described, involving the application in such areas as the military, industrial electronics, power system and customer electronics. At last the general trend of EMC technology development is discussed, using the case of EMC technology development in the military area for reference.
Chinese Text Classification with a KNN Classifier Using an Adjusted Feature Weighting Method
Authors: Lin Wei Ran , Wu Zhi Hui , Feng Li Chao , Huang Wai Bin
Published: February 2011

KNN algorithm is used for Chinese text classification in this paper. First, TF-IDF is chosen as the feature weighting method. To the characteristics of corpus used in this paper, TF-IDF is adjusted to a new method. At last, experimental result shows the accuracy of KNN text classifier can be improved with the adjusted feature weighting method.
Existence of Positive Solution for Multi-Point Sturm-Liouville Boundary Value Problem
Authors: Meng Xian Rui , Li Na Na , Tong Yu Xia
Published: February 2011

Multi-point boundary value problem is studied in this paper. With the condition that nonlinear term is superlinear or sublinear, it is proved that there exists at least one positive solution to multi-point Sturm-Liouville boundary value problem by using the fixed-point theorem concerning cone expansion and compression of norm type.