bluuebunny/crossref_metadata_2025 huggingface dataset:
Stratégie virtuelle et stratégie d'entreprise : trois études de cas
Authors: Pagé Éric , Labrecque Joanne
Published: June 2011

Résumé Si les insuccès de plusieurs entreprises point-com au cours des dernières années ont réduit l’engouement pour le commerce électronique destiné aux consommateurs, cela ne veut pas dire pour autant qu’il soit impossible pour les entreprises en cause d’en retirer de réels avantages. De l’étape de l’implantation, les entreprises doivent maintenant passer à l’étape de l’ajustement visant à redéfinir le rôle que le réseau Internet doit jouer dans le développement de l’entreprise, que ce soit sur le plan du développement de la clientèle ou sur ceux de l’accroissement des revenus, de la réduction des coûts d’exploitation ou de l’amélioration de l’efficacité, pour se différencier de ses concurrents. Dans cet article, nous abordons cette question en présentant trois cas d’entreprises qui ont développé le commerce électronique destiné aux consommateurs. En plus de décrire les étapes de l’implantation d’un site Web transactionnel auprès des consommateurs au sein de chaque entreprise, nous exposons les stratégies virtuelles préconisées par ces différentes entreprises ainsi que l’appréciation de ces stratégies par un groupe de consommateurs types. À partir de ces observations, nous proposons un modèle qui permet d’établir des liens entre la stratégie virtuelle et la stratégie globale d’une entreprise.
Occasions d'affaires et Internet : où en sommes-nous ?
Authors: Nantel Jacques
Published: June 2011

Résumé À la suite de l’effondrement des titres technologiques et des nombreuses faillites qui ont ébranlé le secteur du commerce électronique, plusieurs entreprises ont freiné leur réflexion sur le rôle que ce mode de commercialisation peut jouer. Le présent article a pour but de faire le point sur les occasions réelles que représente le commerce électronique, que ce soit pour les entreprises ou pour les entrepreneurs. Basé sur une analyse tant économique que stratégique des principales tendances des dernières années en matière de commerce électronique, il décrit les activités qui n’auront jamais une plus-value et celles qui sont les plus prometteuses.
Modèles d'affaires électroniques et distributeurs automobiles : une approche par la chaîne de valeur
Authors: Donada Carole
Published: June 2011

Résumé Les spéculations sur l’avenir du système de la distribution automobile vont bon train et de nouveaux distributeurs préparent déjà leurs stratégies d’entrée dans le secteur. Que ce soit la grande distribution ou les nouveaux intermédiaires dans Internet, tous fourbissent leurs armes pour investir ce secteur en mutation. Cet article discute donc des enjeux de cette évolution pour les concessionnaires. La réflexion proposée est essentiellement descriptive et sectorielle; elle s’appuie sur une approche par la chaîne de valeur des concessionnaires. Cette étude permet de montrer que les combats menés actuellement par les concessionnaires sont peut-être dépassés face à la nécessité stratégique de réinventer leur métier.
Le rôle de la confiance dans le commerce électronique : une analyse stratégique
Authors: Kludze Hillarius , Rowe W. Glenn
Published: June 2011

Résumé La question de la confiance dans Internet constitue un obstacle considérable à la croissance du commerce électronique. Cet article examine la contribution de la confiance à l’obtention d’un avantage concurrentiel dans les transactions électroniques effectuées dans Internet. Ainsi, la forme semi-forte de confiance est la forme ayant le plus de chances de fournir un avantage concurrentiel dans ce type de transactions lorsque existe la confiance dans l’autre partie à l’échange et dans les mécanismes de contrôle. L’article définit d’abord le commerce électronique, puis la confiance, ses composantes et ses différents types. Il décrit ensuite la théorie des coûts de transaction en rapport avec le commerce dans Internet, de même que les concepts apparentés de vulnérabilité et d’opportunisme. Par la suite, l’article analyse les différentes composantes de la confiance dans le contexte du commerce électronique grand public. Il se termine par une discussion sur les implications de la confiance pour les praticiens du commerce dans Internet.
La certification de conformité des sites Web
Authors: Martel Louise , St-Germain René
Published: June 2011

Résumé Plusieurs études portant sur l’évolution du commerce électronique démontrent que la confiance, ou plutôt le manque de confiance, des intervenants constitue un frein majeur à son expansion. Afin d’accroître la confiance des différents intervenants, de nombreuses organisations ont développé des sceaux de certification de conformité des sites Web. Dans la première partie de l’article, le concept de certification de conformité est défini. La deuxième partie décrit des objets susceptibles de donner lieu à une certification. Quant à la troisième partie, elle présente différents modèles de certification. Comme la certification implique la conformité à des normes, le processus de normalisation constitue la quatrième partie. Enfin, la cinquième partie expose une typologie des sceaux de certification.
Les places d'affaires électroniques face aux sites Web d'entreprise : enjeux et choix stratégiques
Authors: Raymond Louis , Talbot Jean , Vézina Michel
Published: June 2011

Résumé Le nouvel environnement d’affaires, caractérisé par la mondialisation des marchés et l’économie du savoir, a été bouleversé par le développement effréné des technologies de l’information et des communications, et en particulier des technologies de l’inforoute. Ces technologies constituent l’infrastructure d’un réseau mondial de liens électroniques entre partenaires d’affaires. Les possibilités qui en résultent de faire des affaires électroniques entraînent des enjeux reliés à la stratégie, à l’avantage concurrentiel et à la performance de l’organisation. Ainsi, un nouveau phénomène émerge, soit les places d’affaires électroniques. Cet article examine l’évolution du commerce électronique, qui a débouché sur l’établissement de places d’affaires électroniques. Puis il décrit les types de places d’affaires, leurs rôles et leurs fonctions. Par la suite, il précise les enjeux stratégiques qu’elles comportent, par exemple quant au choix pour une entreprise de créer son propre site Web transactionnel ou de participer à une place d’affaires électroniques déjà établie.
Control Flow Analyze for Procedure Blueprint
Authors: Wang Feng Qin , Ke Heng Jin
Published: June 2011

Based on the well-defined UML2.0 activity diagram, a meta-model based on Control Flow Diagram is presented. And our strategy in this article is to define an OCL-based mapping in a formal and verifiable form as consistency rules between an AISD and a CFG, so as to ensure the completeness of our meta-models and allow their verification. At last, we adopt a static analyze method to transform procedure blueprint to Control Flow diagram.
Dynamics Modeling and Simulation for Main Drive System of Automatic Cutter
Authors: Zhou Jian Qiang
Published: June 2011

Aiming at the Multi-layer leather cutting machine,for the more thicker material paved on the table,the cutting resistance are increased and the cutter are to be need much more longer,this caused the cutter chattered easily.In order to solve the problem, the structure analysis are to be done for the main transmission system, the dynamics model of the high-frequency cutting knife shaft system is established according to transfer matrix method of the multibody system.Then combining with boundary conditions, the shaft system of natural frequency are calculated,it helped to do the dynamic equilibrium analysis for the flexible rotor and the slider-crank mechanism, simulation results show that it is good to reduce its inertia force and improve cutting stability through structure improvement for the main transmission system.
Research on the Distribution and Application of Business Group Resource Based on Multidimensional and Cooperative Game
Authors: Bai Cheng Cheng , Ma Jun Hai
Published: June 2011

This article applied multidimensional and cooperative game theory to analysis the resource distribution problems of monopoly group and oligarchic groups. Such distribution method will make sure that every sub company can not only obtain normal profit but also can maximize the profit of whole group. This article also gives some application research which can provide reference to the choices of group competitive strategy
A Polishing Algorithm for the Profile Curve of GIF Image
Authors: Yang Sheng Yuan , Peng Nina , Shu Shi
Published: June 2011

The GIF image files have high compression ratio, less disk space, fast transmission, etc., which are widely used in the Internet. However, some GIF images’ profile curves are not smooth, which will affect the integration with the background. So, it needs to be polished. In this paper, the major work is polishing the profile curve by using the finite element method. Firstly, it is to extract the profile curve of GIF image. Secondly, it is to establish the energy function of the profile curve and the corresponding minimum problem. Finally, it is to polish the profile curve by using the finite element method. The profile curve polishing algorithm in this paper do not required the curve expressed in explicit or implicit expression. It can make a good approximation of the original curve. Numerical experiments demonstrate that the algorithm is effective and efficient.
Real-Time Implementation of Chirp Scaling Algorithm
Authors: Shi Chang Zhen , Wang Zhen Song
Published: June 2011

Echo data generated by Synthetic aperture radar (SAR) has the characteristics of high data rate and huge data quantity. However, the complex Chirp Scaling (CS) algorithm in SAR processing leads to excessive calculations. To solve this problem, this paper presents an implementation on a parallel structure real-time image processing board, which adopts principal-subordinate parallel processing structures. The principal FPGA board is responsible for the control of the entire image processing, data collection, distribution and interaction. Each subordinate FPGA, as an independent processing unit, is able to independently finish the FFT transformation and phase factor compensation. The performance of the high-performance parallel FFT processors is 4 times as efficient as that of a single butterfly processor.The phase factor generation and compensation is optimized through two steps, one is fast algorithm in phase factor generation and compensation; the other is the optimization among the processing procedures,The proposed architecture can process an image in size16384 × 65536 at 100MHZ operation frequency within 12.5s.
A Fast Calibration Algorithm Based on Vanishing Point for Scene Camera
Authors: Long Jia , Zhang Xiu Mei , Zhao Long
Published: June 2011

A fast and simple calibration method based on vanishing point is carried out to overcome the disadvantage of low efficiency and operation problems which the traditional calibration methods based on standard calibration field has. Focal length and rotation matrix can be calculated by the information of two sets of parallel lines, then translation vector is obtained by the space length and image coordinates of a straight line derived from the origin. The results of experiment indicate the simplicity of this method. At the same time the efficiency is improved with satisfying calibration accuracy in practical application.
Indicators Forecasting and Empirical Analysis of Regional Economic Development Based on Neural Network
Authors: Liu Yu Lin , Yang Jun Qi
Published: June 2011

Based on neural network method and by using the relevant social and economic development history index data, this paper establishes the mathematical model and neural network model that is used to predict future land resource demand, and the network is trained by using data from 1992 to 2005. Accordingly, the trend analysis model, which is to predict and analyses the indicators of population, production value, GDP, etc., is also established, and applied to predict the construction land demand from 2010 to 2020. Here, taking the trend forecasting data of the population, production value and GDP as trained network input, it calculates the future land demand. The simulation result of this method is proved to be satisfactory after comparing it with traditional statistical model forecasting results.
Predictive Model for BOF Steelmaking Using RBF Neural Network
Authors: Zhu Ya Ping , Zhao Xiao Dong , Xu Sheng Lin
Published: June 2011

Effective control of the endpoint steel temperature and contents of carbon, sulphur, etc. is one of the main tasks of BOF steelmaking process. This paper established a multivariable predictive model for BOF steelmaking using RBF neural network. The input data is pretreated and standardized. Receding horizon control method is used to increase the accuracy of the model. Simulation and experiment comparisons show that the model is validated and has high hit rate.
Automatic Question Answering System Based on Contextual Interaction
Authors: Liu Han Xing , Zeng Ling , Liu Cai Xing
Published: June 2011

In the question-answer system aimed at course learning, the serial questions asked by user should not be processed respectively, but need to be replied according to context, and the premise is to examine the relevance between user’s current question and quondam questions. An automatic question-answer system is designed which can carry out contextual interaction. The relevance of user’s questions is detected with SVM, the elliptical sentences in the following questions are recovered, and final answers are extracted from ontology-knowledge-base after classifying questions and retrieving information. The experiment result indicates that the F measure of question detection reaches 88% and the accuracy rate of questions is 69.5%.
Decoding of Dot-Distribution Coded Targets and EO Device
Authors: Yu Zhi Jing , Shi Jia
Published: June 2011

A method of decoding ring marks and EO device was presented in this paper. Also the GSI coded targets had been analyzed and a new type of optical probe can be recognized in use of affine transformation and the cross ratio. Experimental results show that the EO device and optical probe are to be identified correctly and efficiently.
A Circuit Simulator Applicable to Fault Simulation
Authors: Zhao Guang Yan , Sun Yu Feng , Tang Qing
Published: June 2011

In view of the demand of circuit fault simulation analysis, a novel circuit simulator for fault simulation was designed to overcome the shortcomings of traditional circuit simulation tools in fault simulation. The principles and method of this simulator were proposed, which focus on the realization of the basic functions and weakens detail characteristics. Based on the method, the components simulation models and fault models with the combination of the numerical variable with logical variable were built. Moreover, the implementation algorithm and simulation flow were introduced to show how to simulate a circuit based on this simulation model. At last, an example was simulated to verify the feasibility of this method. It is shown that, this circuit simulator will become a valuable tool for the circuit fault simulation and analysis.
Energy Wave Transmission and Control Analysis in Force Reflection Teleoperation Based on Interconnected Power Line
Authors: Xie Xiao Hui , Ma Cui , Sun Qiang , Luo Chang Jie , Du Ru Xu
Published: June 2011

Force-Reflected Telepresence Teleoperation system has been widely used. Generally, force and torque sensors are installed on the robot to realize haptic perception. Control commands and force-reflected information from the robot are transmitted by communication link, such as internet. However, this structure not only brings difficulties of installation and commissioning, but also reduces the system flexibility and makes control more difficult. And it is prone to interfered in microenvironment. This paper presents a new type of energy transfer method to achieve it by power line instead of internet between the Master-slave Manipulators. This method achieves the consistency of force-reflected without using sensors to measure the conditions. In practical application, it requires to design an energy managed controller to insure the stability and obtain precision in synchronization between the master part and slave part. This paper gives the theory, the system structure and control method of force telepresence teleoperation based on power line.
Liver Image Segmentation Using Improved Watershed Method
Authors: Xie Xiao Hui , Ma Cui , Yu Xiao Fang , Du Ru Xu
Published: June 2011

This paper introduces an improved watershed algorithm for liver image segmentation. Medical images have complicated structure and the soft tissues have deformation sometimes. To exactly conduct the following image registration or surgery navigation, the image segmentation must identify the changes quickly and accurately. Watershed algorithm has fast speed and good edge location for complex structure, but it is sensitive to noise and has the over-segmentation problem. In this paper, pre-processing and post-processing methods are proposed during watershed segmentation procedure. According to the thresholds of region area and gray difference between adjacent regions, the image noise is reduced at pre-processing stage and the over-segmented regions are merged at post-processing part. Through the experiment of two similar liver images, we can see the segmented images have clear outline and the difference of two images can be identified obviously.
An Effective Conversion Algorithm of Arithmetic Expression from Infix Form to Prefix Form
Authors: Wang Ting , Tan Hao Xun , Liu Ren Ren
Published: June 2011

Generally, when we optimize the object code of expression in source program, we get the optimizing code in the binary tree of this expression. Expressions in source program are in infix form, while the prefix form is more efficient for the binary tree. Hence this paper is to provide an effective transition algorithm of arithmetic expression from infix form to prefix form.
The Study of Academic Research Level Appraisal Method Based on both ANP and Factor Analysis
Authors: Ke Hong Di
Published: June 2011

This paper studies Natural sciences Academic research level Appraisal method. first, Reference a large number of relevant scientific research index system literature, propose level of scientific research of natural science disciplines comprehensive evaluation index system. And using network analysis (ANP) and factor analysis to the level of scientific research on these subjects to rank college and analysis. Finally, we use the combination of ANP and factor analysis assigning weights to the weight of two methods reasonably together. In this paper we make a simple plan, the minimum deviations squares as the objective function， comprehensive evaluate existing 10 universities part academic research level, access to comprehensive score and ranking.
A GA-BP Neural Network Model for Predicting the Temperature of Slabs in the Reheating Furnace
Authors: Yang Ying Hua , Peng Lin , Chen Xiao Bo , Liu Xiao Zhi
Published: June 2011

In this paper, 48 BP neural networks in series connection are constructed to predict the slab temperature, giving full consideration to the continuous heating process of the slab from inlet to outlet. In order to overcome the defects of BP algorithm, a hybrid training algorithm which combines GA method with BP networks is presented to improve the prediction precision of the model. It firstly optimizes initial weights and thresholds of BP networks with GA, and then trains the optimized networks by using BP algorithm. Simulation results show almost all errors of the test slabs are within the ±5°C limits, which indicates that the GA-BP model is verified to be valid and efficient, and is useful for online prediction and optimal control.
Lung Nodule Segmentation Using Mathematical Morphology
Authors: Qu Ming Zhi , Weng Gui Rong
Published: June 2011

Contemporary computed tomography (CT) technology offers the better potential of screening for the early detection of lung cancer than the traditional x-ray chest radiographs. In order to help improve radiologists’ diagnostic performance and efficiency, many researchers propose to develop computer-aided detection and diagnosis (CAD) system for the detection and characterization of lung nodules depicted on CT images and to evaluate its potentially clinical utility in assisting radiologists. Based on review of computer-aided detection and diagnosis of lung nodules using CT at home and abroad in recent years, this paper presented a new algorithm that achieves an automated way for applying multi-scale nodule enhancement, mathematical morphology and morphological Segmentation.
Trajectory Model of J-Type Groove and its Curve Fitting of B-Spline
Authors: Chen Chang Liang , Hu Sheng Sun , He Dong Lin
Published: June 2011

This paper describes the complexity and particularity of the trajectory of tube-sphere intersection and derives mathematical model of the track; according to characteristics of B-Spline curve, the track intersecting curve is partitioned ,and determine the mathematical relationship between the control points (deBoor point) and the data points of J-type groove; using cubic non-uniform irrational B-Spline theory, generate segments of approximation curves, then first and last point of each segment are constrained, so that combination curves can be seen as a whole curve with C1continuity; programming the trajectory of the preprocess module with C# language, it has advantages of approximate accuracy and high efficiency, thereby it can increase accuracy and precision of welding terminal position, so that the overall system has a metronomic characteristic.
Research on the Algorithm of Technological Dimension Chain Based on 3D Process Models
Authors: Chang Zhi Yong , Yang Jian Xin , Wan Neng , Zhao Jie
Published: June 2011

Aiming at the wide application of technological design in three-dimensional CAD software, while the technological dimension chain’s calculation is completed in the two-dimensional process sketch still. A sort of method of calculating technological dimension chain was put forward, which is based on three-dimensional process model. Three-dimensional process model is created through the process of technological design by introducing the concept of three-dimensional process model, and then, the information of process dimension is extracted from the three-dimensional process model and a tree oriented process dimension structure is established. On the basis of the above, we can proceed with technological dimension chain’s integrated calculation and analysis, redistributing the process dimension and its corresponding allowance dimension and tolerance. It will offer more reasonable and reliable process parameters to the technologists in the design of process route, and also effectively solve the problems of the technological dimension chain’s calculation involving to CAPP system in the environment of three-dimensional CAD software.
Simulation Implementation and Performance Analysis of IEEE 802.11e EDCA Protocol
Authors: Zhou Jin Hua , Lei Lei , Liu Wei Kang , Tao Li Bin
Published: June 2011

In this paper, we focus on IEEE 802.11e enhanced distributed channel access (EDCA) protocol, which can provide QoS guarantee for multimedia applications in mobile ad hoc networks. First, we briefly explain the concept of EDCA protocol. Then we implement EDCA protocol in GloMoSim via configuring special contention parameters for multimedia applications and introducing a virtual collision disposal mechanism in the MAC layer. In the end, we provide performance analysis for EDCA protocol through plentiful simulations. The simulation results show an excellent performance of the EDCA protocol we proposed.
The Orthogonality Characters of Multiple Vector-Valued Ternary Wavelets and Applications in Theoretical Physics
Authors: Gao Hai Lin
Published: June 2011

Wavelet analysis has been the focus of active research for twenty years, both in theory and applications. In this work, we develop the concept of a class of multiple vector-valued trivariate wavelet wraps with a dilation matrix. A new method for constructing multiple vector-valued trivariate wavelet wraps is proposed. Their characters are investigated by means of operator technique, time-frequency analysis method and matrix theory. There orthogonality formulas regarding the wavelet wraps are provided. Orthogonality decomposition relation formulas of the space L2(R3, Cr×r)are obtained by constructing a series of subspaces of the multiple vector-valued wavelet wraps. Furthermore, several orthonormal wavelet wrap bases of space L2(R3, Cr×r) are constructed from the wavelet wraps. The pyramid decomposition scheme is obtained based on such a GMS and a sufficient condition for its existence is provided. Relation to theoretical physics is also discussed.
Stress Concentration Factor for some DTK Joints Based on Finite Element
Authors: Guo Long , Zhang Xiu Feng
Published: June 2011

By research of simple tubular joints, thin-shell element analyses have been conducted for thousands of DTK joints frequently used in offshore structures in this paper. These joints are subjected to axial load, by use of nonlinear least squares fitter, the above results are derived a new set of parametric equations, in terms of several non-dimensional geometric ratios γ, ξ, β, τ and θ with the Origin software. Separate analyses have been conducted for the difference of SCFs in DTK joints and SCFs for TK joint from empirical formulas. The SCF results of these joints could act as a good reference for both further academic studies on SCF of other complex joints and engineering designing works.
Fault Detection of WSN Based on Spatial Correlation
Authors: Feng You Bing , Zhang Rong Biao
Published: June 2011

Regarding application with smooth variation of detection, spatial correlation of sensors’ data within a small field was applied to sensor nodes’ fault diagnosis. The data were sorted into several continuous sequences by sink node. Sequence with minimum variance was regarded as normal data to determine normal nodes. For undetermined nodes, it can be determined via calculation on deviation to normal nodes’ data of vicinity area. If deviation does not exceed the threshold, the node is normal; otherwise, it is regarded as a fault node. The research on WSN in a greenhouse shows that fault node can be effectively detected in time by this method.
Bridging the Mapping between Ontology and Relation Schemas Based on ORMapping Technology
Authors: Qian Hai Zhong , Shen Su Bin
Published: June 2011

Ontology plays a key role in such areas: knowledge engineering, artificial intelligence, information retrieval, semantic web and web service. It is important to recover knowledge associated with specific domains in relational database to semantics, especially, in Ontology learning field. Previous works showed that ontologies can learn from relational database. However, the presented approaches still have some limits. In this paper, we present an ontology learning method based on Object Relation Mapping (ORM) that presents how the source of the databases can be exploited to ontology and the details of object can be generated, such as class hierarchies, relationship and properties.
Research of the Wireless Sensor Networks Routing Protocol Based on CEJ Ant Colony Algorithm
Authors: Zheng Ji Yue , Hu Jun Guo
Published: June 2011

According to the limitation on radio range of sensor nodes and the shortage of the nodes' energy of wireless sensor networks(WSNs),we proposed a routing protocol based on CEJ ant colony algorithm(Common ants, Energy ants, Jumping ants).In the improved algorithm, the Common ants walk by inducing pheromone； the Energy ants walk by inducing the remaining energy of the nodes that adjacent to the current node；the Jumping ants induce the times they need to hop from the current node to the Sink node。All the ants cooperate to construct the optimum transmission chain eventually. Simulation results show that this algorithm can balance the energy consumption of nodes in the network and prolong the lifecycle of the whole network.
Frame Design of the Third-Party Information Support Platform Oriented to Full Lifecycle of Virtual Enterprise
Authors: Feng Yong , Guo Yong Fang , Yang Yan , Xu Hong Yan
Published: June 2011

Virtual enterprise (VE) has now become an indispensable way for modern business to cope with the intense market competition. However, the existing construction method of information support platform would not be able to adapt to the development of VE. This paper first analyzed the information demand oriented to the full lifecycle of VE, and then put forward a frame design of the third-party information support platform according to the above information demand, which included the frame of the information support platform, the analysis of layer function and its operation mechanism. Finally we summarized the full paper. The proposed frame is capable of assisting the third-party organizations to implement information support platform fast and dynamically according to different industry background. So it has good application prospect.
SVM Analysis Method for Infrared Spectra of Mixed Gas
Authors: Bai Peng , Li Yan , Liu Peng
Published: June 2011

In order to solving the problem that the mass samples of mixed gas spectra data samples being unable to obtain, characteristic absorption spectrum line of the component gas for mixed gas being overlap, and the problem of randomness of component concentration distribution for mixed gas and so on, support vector machine is introduced for the infrared spectra analysis for the mixed gas. Key technologies as feature selection of spectra data samples, data preprocessing, SVM calibration model parameters optimization and level structure for spectrum analysis of a mixed gas is proposed in the paper. The influence of above-mentioned four key technologies to the analysis results is discussed by using experimental means. The experimental result shows that with adoption of the key technologies, the maximum absolute error of component concentration analysis for the mixed gas is 2.93%, and the maximum average absolute error is of 0.73%. The method can also be used for infrared spectra analysis for other mixed gas, and it has practical application value.
Research on Modeling Virtual Battlefield Based-On Ontology
Authors: Wang Bo , Zhang Li Min , Li Yan , Zhang Guo
Published: June 2011

Ontology is applied to agent modeling and reasoning is one approach for research on agents. Modeling virtual battlefield based-on ontology is proposed to support computer generated forces base-on agent technology. Researches of ontology being applied to military modeling and environment modeling are analyzed. The virtual battlefield ontology model is presented. The model includes four domains: nature environment, physical objects, situation and operation plan. Models of the four domain ontology are built. The model provides consistent semantic representation and common understanding for knowledge sharing in military simulation and computer generated forces.
Research on Three-Dimensional Digitization Method of General Cliff Petroglyph in Lianyungang City
Authors: Cui Xu Sheng , Wang Yong Xin , Xie Hong Quan , Li Bin
Published: June 2011

Three-dimensional laser scanner is adopted to protect and study on Lianyungang City General Cliff petroglyph by institute of key cultural relics protection. Through the high-precision scanning by Surphaser for important locations, including the faces, crops, chessboard, milky way, meridian, society, the Sun and so on, three-dimensional dates of 22 stations were obtained. After splicing these points cloud by Leica Cyclone, AVI video was generated on the basis of development path of camera, and a complete animation video was obtained by video editing software at last. The results show that three-dimensional laser scanner can be used for fast, accurate completion of rock digital and the effect on the conservation and research of cultural relics protection is very favorable.
Analysis of the Dynamic Behavior of a Moving Crack in FGMs Using Non-Local Theory
Authors: Bi Xian Shun , Luo Cai Song , Wang De Kui
Published: June 2011

A theoretical and numerical study has been conducted to investigate the dynamic crack propagation in functionally graded materials (FGMs) by making use of non-local theory. The variation of the shear modulus and mass density of the FGMs are modeled by a exponential increase along the direction perpendicular to the crack surface. The Poisson’s ratio is assumed to be constant. The mixed boundary value problem is reduced to a pair dual integral equations through Fourier. In solving the dual integral equations, the crack surface displacement is expanded in a series using Jacobi’s polynomials and Schmidt’s method is used. Contrary to the classical elasticity solution, the crack-tip stress fields does not retains the inverse square root singularity. The analysis revals that the peak values of crack-tip stress increase with the the crack velocity as characteristic length is decreased.
Implementation of Heuristic Technique and Genetic Algorithms in Shikaku Puzzle Problem
Authors: Lukas Samuel , Aribowo Arnold , Halim Steven Christian
Published: June 2011

Shikaku is a logic puzzle published by Nikoli at 2005. Shikaku has a very simple rule. This puzzle is played on a rectangular grid. Some of the squares in the grid are numbered. The main objective is to create partitions inside the grid. Each partition must have exactly one number, and the number represents the area of the partition. Then the partition’s shape must be a rectangular or a square. The aim of this research is discussing how can computer software be able to solve the Shikaku problem by implementing heuristic technique and genetics algorithms. Initially the Shikaku problem is inputted into the system. Firstly, the software will solve the problem by applying heuristics methods with some logic rules. All logic rules are created and implemented into the software so that the software can minimize the partitions possibilities to the problem. If this heuristics method still can not solve the problem then genetic algorithms will be executed to find the solution. This paper elaborates from how the problem be modelled and also be implemented until software testing to ensure that the solver worked as expected. The implementation consists of a virtual puzzle board with three different size, genetic algorithms parameters, and ability to create, save, load, and solve puzzle. Software testing is conducted to find how fast the system can solve the problem.
Design and Application of Frequency Conversion Constant Pressure Water Supply System
Authors: Hu Xue Mei , Zhou Wei
Published: June 2011

Firstly, this paper analysed the existed problem on traditional controlling way of city water supply system, then elaborated the controlling principle of frequency conversion. Finally, a designed practical example by frequency conversion technical is given on the water supply system. It is proved that frequency conversion can maintain constant pressure water, and it is a very ideal efficient measure for energy saving. Therefore design and transformation on water supply system has a broad market application prospect.
Weighted Algorithm of Multi-Sensor Data Conflict in Coal-Rock Interface Recognition
Authors: Ren Fang , Liu Zheng Yan , Yang Zhao Jian
Published: June 2011

In order to settle such a problem that the multi-sensors data fusion results are not good due to data confliction in the coal-rock interface recognition, the paper first carries out the fusion with D-S evidence theory. The fusion results are not correct when there are high-conflicting in the evidence, so a distance function is introduced and weight fusion correction algorithm is put forward. Through test simulation, fusion results respectively with D-S evidence theory, weight correction algorithm and fuzzy neural network are analyzed. The results show: the good results are achieved in the multi-sensor data conflict of coal-rock recognition through weight fusion correction algorithm, and influence of signal conflict is avoided effectively.
Research on the Access Method of Distributed Control Channel in WMN Based on TDMA
Authors: Li Ming Biao , Zou Dong Dong , Xie Sheng Li , Wang Jun
Published: June 2011

The access strategy and method of control channel in WMN is an important research project. In this paper, description of access strategy and the method on distributed control channel in WMN based on TDMA are carried out, the coordination mechanism of multiple channels and allocation algorithm of controlling time slot to make the access of control channel fast and fair are proposed. Finally, the paper formulates protocol specification of control channel access, being appropriate for large-scale network, and discusses its application in the maintenance of network topology, route discovery and the establishment of QoS request.
A Resonant Frequency Control Strategy for Contactless Power Transfer Systems
Authors: Niu Wang Qiang , Xu Wei Min , Huang Xi Xia , Wang Jian Hua , Shen Ai Di , Chu Jian Xin
Published: June 2011

In an inductively coupled power transfer (ICPT) system, a primary capacitance is usually used to minimize the VA rating of power supply, and a secondary capacitance is adopted to maximize the power transfer. The changes of the secondary capacitance because of environmental temperature or other factors will alter the resonant frequency of the secondary side, and thus the power transfer capability is varied. In this study, the power transfer capability of ICPT systems is investigated in detail when the secondary capacitance changes. A resonant frequency control strategy is suggested to keep the system operation frequency to follow closely the secondary resonant frequency when the secondary capacitance varies. This new strategy is based on the synergic action of the system operation frequency and the primary capacitance. The performance of three frequency control methods, that is the resonant frequency control, the traditional variable frequency control, and the fixed frequency control, are compared when the secondary capacitance varies. A distinguish feature of a resonant frequency control is that the power transfer is an approximately linear function of the secondary capacitance. This linear characteristics facilitate a voltage control strategy being used to keep the load power unchanging when the secondary capacitance varies. A traditional viewpoint in an ICPT system is that maximizing of output power is achieved when the system operation frequency is equal to the secondary resonant frequency. Numerical simulations show that the power output by a resonant frequency control do not always dominate the power output from other two frequency control methods. This phenomenon suggests that above traditional viewpoint is a misconception, and should be reexamined. The power transfer capability of ICPT systems is an intricate function of the operational frequency, and thus resonant operations of the secondary side do not always guarantee maximizing the power transfer. A suitable control mechanism, such as the resonant frequency control, the variable frequency control, or the fixed frequency control, should be designed carefully according to the practical engineering requirement when the secondary capacitance varies.
Object-Oriented Classification of Remote Sensing Image Based on SPM Feature Extraction
Authors: Li Xin Gang , Hu Yan
Published: June 2011

The ultimate goal of remote sensing image processing is to analyze and interpret the image. The classification is the most basic question of remote sensing image information extraction. Object-oriented classification is proposed in recent years, whose image classification is based on image segmentation. This paper introduces the spatial pyramid matching kernel method (SPM) for feature extraction, the segmentation algorithm uses mean shift, and the classifier is support vector machines（SVM）. Taking a piece of land in southern California for example, we do two experiments, including our approach and a comparing test .Comparing the results, we can see that the object-oriented classification of remote sensing image which based on SPM feature extraction can greatly improve the accuracy.
Software Design for Water Environment Remote Monitoring System Based on Mobile Devices
Authors: Wei Qing Jian , Ning Jin , Lou Xi Zhong , Ma Ren Zhi , Xu Jia
Published: June 2011

A mobile remote data monitoring center based on Android operating system is developed for the water environment monitoring system via wireless sensor network (WSN). The monitoring center collects the sensors data from the WSN based on C/S mode. The SQLite is adopted in database module to achieve high memory speed and efficient operation management. Dynamic graphical displays are accomplished to show the topology of the WSN, the state of the nodes and the real-time and historical water environment parameters of the sensor nodes. The experiments show that the software of water environment remote monitoring system, based on mobile devices of Android operating system, can conveniently satisfy the requirements of data collecting and monitoring for water environment monitoring system based on WSN.
The Study on Digital Imaging Technology of Real-Time Mineral Mixture Gradation Detection on Construction Sites
Authors: Li Wei , Wang Feng Fei , Du Xiao Bing , Zhang Juan
Published: June 2011

In order to solve the problems of hysteretic and complex process in detection of mineral mixture, a new digital image acquisition system was designed in this paper that can meet the requirements of real-time detection onsite. It implements the all-weather imaging stably using infrared laser with a linear array digital camera. Through the installation of filters and the selection of the special background material to ensure image quality and reduce the difficulty on image processing. It has been confirmed that the capability of meet the needs of real-time detection to Mineral Mixture Gradation in experiments.
Design of Sensorless Vector Control System for Induction Motors
Authors: Gao Jun Li , Chen Shi Jun , Li Guo Cai
Published: June 2011

Online identification of motor rotor speed by using modified rotor flux orientation angle estimator and model reference adaptive system achieves sensorless vector control of induction motor. The principle verification conducted on self-developed sensorless vector control of induction motor shows that the system has good dynamic & static performance and induction motor achieves significant improvement in speed regulation in the premise of not adding cost of general inverters.
Study on Dyeing Properties of Acid Dyes for Different Tree Species
Authors: Li Hui , Li Xin Gong , Chen Wei Min
Published: June 2011

Use acid scarlet3R ,acid orangeⅡ,acid black ATT and black powder as pigment,prepare for Acid Color, choose four fast growing woods-Chinese fir, poplar, eucalyptus and rubber wood as research objects, study on dyeing properties and dyeing effects of acid dyes for different tree species. It is found, there are differences in staining effects for four fast growing woods. Attachment properties of dyestuff solution on Chinese fir is good, but dyes proportion is very poor; Attachment properties of dyestuff solution on poplar is good, but dyes proportion is very poor; Both attachment property of dyestuff solution and dyes proportion of eucalyptus are not good; Both attachment property of dyestuff solution and dyes proportion of rubber wood are good.
Color Image Stereo Vision Obstacle Detection Based on Phase Congruency
Authors: Guo Long Yuan , Zhang Guo Yun , Wu Jian Hui
Published: June 2011

Obstacle detection based on stereovision is sensitive to illumination. Considering phase congruency is insensitivity to illumination, the paper presents a novel algorithm for color image stereovision obstacle detection based on phase congruency. The images are segmented with phase congruency and color in the algorithm, firstly. The obstacles are detected after stereo correspondence of segmentation images. The result of experiment indicates that the algorithm is good at image segmentation and obstacle detection under varying illumination.
Research on CRM Based on SCM: A Case Study of HC Company
Authors: Han Wei , Zou Wei , Wei Hou Qing
Published: June 2011

The paper is concentrated on the case of HC Company providing steel material and other related service to vehicle and supporting manufacturers. Based on the analyzing the characteristics of the Supply Chain structure, which HC Company belongs to and plays the role both “Supplier” and “Core Business”, the special demand of CRM based on the SCM was put out to enhance the customer relations and to optimize the resource allocation.
Designment and Implementation of Short-Range and Nowcasting Weather Forecast Operational System Based on Sharpmap
Authors: Li Xu , Wang Shi Gong , Shang Ke Zheng , Li Sheng Chen , Zhang Lan Hui , Zhou Hai , Cheng Yi Fan
Published: June 2011

By using .NET platform and open source Sharpmap technology, a short-range and nowcasting operation system was established for Qinghai. Many kinds of data were integrated in this system, which get from air sounding, satellite, T213 numerical predicting products, doppler radar, lightning position system and automatic weather stations. The system with the functions of ensemble prediction and data retrieval and display, can meet the demand of short-range and nowcasting weather forecast, enhance efficiency of forecaster and provide a support for disaster prevention and mitigation in Qinghai.
Study on Vehicle License Plate Automatic Recognition System for Exit and Entrance
Authors: Shao Jian Chao , Guo Xue Mei , Chen Bing Qi
Published: June 2011

A new algorithm of vehicle license plate automatic recognition for exit and entrance was proposed in this research. Firstly, using the gray information of vehicle license plate to locate plate roughly, and secondly using the color characteristics of the plate for accurate positioning in the rough location region, and then correcting the horizontal tilt of the plate by the method of Hough transform. After above processing, we adopt template matching method to recognize the plate characters. Experimental results indicated that the developed method can adapt to a variety of complex backgrounds and achieve the correct recognition of the vehicle license plate.
Research of Fast Handover Technique of Mobile IPv6
Authors: Yu He Wei , Xu Xiao Yang
Published: June 2011

This paper proposes an improved scheme of FHMIPv6 (Fast Handover for Hierarchical Mobile IPv6). Using buffer tables to store the information of CoA (Care of Address) and tunnel between MN (Mobile Node) and MAP (Mobile Anchor Point), when MN returns to PAR (Previous Access Router) in a certain period of time, the system would directly use the information in the related buffer records to complete the handover and skip the steps of configuring CoA and establishing tunnel, so MN can rapidly connect to the access router, thus reducing the handover latency.
Research on Electro-Hydraulic Proportional Leveling System of Large Aerial Work Platform Based on Fuzzy PID
Authors: Wang Xin , Zhang Hong Min , Fang Jia Bao
Published: June 2011

Aiming at electro-hydraulic proportional leveling system of large aerial work platform, the model of the system is established and the stability is validated. Because the parameters of traditional PID can be used one state only, the leveling performance of large aerial work platform changes with the change of radius-changing velocity. Fuzzy logic is used to PID control, whose parameters can be adjusted automatically according to error and error changing. A comparison analysis between PID and Fuzzy PID is carried with the help of AMESim/Simulink. The simulation results show that the fuzzy PID has better effects and robustness.