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作者： Petre-Marian T. Nicolae Lucian N. Mandache Ileana-Diana V.D. Nicolae Department of Fundamental Electrical Engineering Faculty of Electrotechnics University of Craiova Romania Department of Software Engineering Faculty of Automation Computer Science and Electronics University of Craiova Romania

The paper presents the features of passive filters and some of the topologies used for the improving of power quality. One has in view aspects on the designing of passive filters tuned for some harmonic components. One presents some recordings and numerical simulations made over the electric signals from a substation used for the supplying of a d.c. line of 600 V. Based on the obtained results one proposes solutions for passive compensations with the consideration of a number of filtering components that depends on the compensation necessities. In order to verify the compensation efficiency, through SPICE simulation, one estimates the effects of compensation correlated with the number of passive filtering cells.

关键词： Passive filters Transportation Substations Power harmonic filters Filtering Frequency Resonance Impedance Band pass filters SPICE

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Test-Data Generation for Web Services Based on Contract Mutation

Test-Data Generation for Web Services Based on Contract Muta...

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2009 Third IEEE International Conference on Secure Integration and Reliability Improvement SSIRI 2009(第三届IEEE安全软件集成及可信性改进国际会议)

作者： Ying-Na Li Ying Jiang Shan-Shan Hou Lu Zhang Faculty of Information Engineering and Automation Kunming University of Science and Technology Kun Institute of Software School of Electronics Engineering and Computer Science Peking University Be Institute of Software School of Electronics Engineering and Computer Science Peking University Be

ISBN: (纸本)9780769537580

Software testing is one of the most important techniques used to assure the quality of Web Services at present. Test-data generation is an important topic in Web Services testing. The quality of test data will influence the efficiency and cost when testing Web Services. Based on the contract-based mutation testing technique, this paper presents a method of automated test-data generation for Web Services. First, according to the description information and contracts in WSDL documents of Web Services, initial test data are generated automatically by the random method. Then the test data are selected using contract mutation testing. This method can generate a test suite meeting a certain contract mutation score, which indicates the quality and efficiency of testing. Finally, we have developed a prototype on the *** platform, and carried out some experiments. The results have shown that the proposed method is effective in automated test-data generation for Web Services.

关键词： Web Service observational data contract data generation program testing

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Segmentation of abdominal aortic aneurysms in CT images using a radial model approach

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10th International Conference on Intelligent Data engineering and Automated Learning, IDEAL 2009

作者： MacÍa, Iván Legarreta, Jon Haitz Paloc, Céline Graña, Manuel Maiora, Josu García, Guillermo De Blas, Mariano Biomedical Applications Department Vicomtech Donostia-San Sebastián Spain Computational Intelligence Group Computer Science Faculty University of the Basque Country Donostia-SanSebastián Spain Electronics and Telecommunications Department Technical University School University of the Basque Country Donostia-San Sebastián Spain Engineering Systems and Automation Engineering Department Technical University School University of the Basque Country Donostia-San Sebastián Spain Interventional Radiology Service Donostia Hospital Donostia-SanSebastián Spain

ISBN: (纸本)3642043933

Abdominal Aortic Aneurysm (AAA) is a dangerous condition where the weakening of the aortic wall leads to its deformation and the generation of a thrombus. To prevent a possible rupture of the aortic wall, AAAs can be treated non-invasively by means of the Endovascular Aneurysm Repair technique (EVAR), which consists of placing a stent-graft inside the aorta in order to exclude the bulge from the blood circulation and usually leads to its contraction. Nevertheless, the bulge may continue to grow without any apparent leak. In order to effectively assess the changes experienced after surgery, it is necessary to segment the aneurysm, which is a very time-consuming task. Here we describe the initial results of a novel model-based approach for the semi-automatic segmentation of both the lumen and the thrombus of AAAs, using radial functions constrained by a priori knowledge and spatial coherency. © 2009 Springer Berlin Heidelberg.

关键词： Repair

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Algorithms for locating GPS coordinates on PDA

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WSEAS Transactions on Communications 2008年第12期7卷 1160-1171页

作者： Enescu, Nicolae-Iulian Mancas, Dan Manole, Ecaterina-Irina Computer and Communication Engineering Department Faculty of Automation Computers and Electronics Bvd. Decebal Nr. 107 200440 Craiova Dolj Romania

The purpose of our research is to find algorithms for loading large maps on PDA and place on it the geographical location given by latitude and longitude. C++ and C# programming languages have been used for implementation. It was elaborated a software which runs on PDA with Windows Mobile 2003 OS and implements algorithms for finding the coordinate on a map represented like a TIF image. The application must localize the coordinates known by longitude and latitude over a given image in TIF format which can represent a map with scale 1:200000 or 1:25000. The map headers contain information that refers to map limit. An algorithm that permits map synchronization when the value of current map is out of limit it was necessary.

关键词： Global positioning system

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Increasing level of correctness in correlation with and reliability level

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WSEAS Transactions on computers 2008年第12期7卷 1927-1937页

作者： Mancas, Dan Enescu, Nicolae-Iulian Manole, Ecaterina-Irina Computer and Communication Engineering Department Faculty of Automation Computers and Electronics Bvd. Decebal Nr. 107 200440 Craiova Dolj Romania

The scope of our research is finding a correlation between the correctness indicator and the reliability indicator for software programs. For this, the correctness and reliability indicators will be calculated for a simple program, written in C programming language. The computations will be made for each program version obtained by correcting different error type found in the testing process. Will be observed there is a closed correlation between correctness and reliability in the way that for an increasing of the correctness level there will also be a significant increase of the reliability level.

关键词： Software testing

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Evaluating multicast routing algorithms' performance and execution time

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WSEAS Transactions on Communications 2008年第12期7卷 1147-1159页

作者： Mancas, Dan Manole, Ecaterina-Irina Enescu, Nicu Computer and Communication Engineering Department Faculty of Automation Computers and Electronics University of Craiova Decebal Bvd. No. 107 Craiova Dolj 200440 Romania

In this paper, an evaluation of the network routing algorithms is made. Problems that arise in routing are treated, each presented in different scenarios in order to obtain a result in comparing different topologies. The comparison analysis is pursuing obtaining a result over the performance of the, network. In order to measure performance, the costs of a network and the delays are aimed. After that, the topology effect is presented. In matter of performance, topology and blocking problems are strongly related. So an analysis of the blocking probability is also presented. As conclusions, solutions for the presented scenarios and also for other important scenarios are given. In all these algorithms the time problem was not yet consider until now, so the average execution time is finally analyzed.

关键词： Topology

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A comparison of multi-agents competing for trading agents competition

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WSEAS Transactions on computers 2008年第12期7卷 1916-1926页

作者： Mancas, Dan Udristoiu, Stefan Manole, Ecaterina-Irina Lapadat, Bogdan Computer and Communication Engineering Department Faculty of Automation Computers and Electronics University of Craiova Bvd. Decebal Nr. 107 200440 Craiova Dolj Romania Software Engineering Department Faculty of Automation Computers and Electronics University of Craiova Bvd. Decebal Nr. 107 200440 Craiova Dolj Romania

We present a comparative analysis for several multi-agents participating in Trading Agents Competition, Classic. The game is first partitioned into separate modules, for which distinct strategies may be developed. The strategies used are taken into consideration both individually and in relation with other agents, but also the game medium. Conclusions regarding possible improvements, better strategies and potential weaknesses are driven from each agent analysis. Alternatives like static market algorithms vs. dynamic market algorithms are considered in detail and advantages and disadvantages are discussed. Also a discussion of TAC market and possibilities for the stochastic system approximation with a deterministic one is realized.

关键词： Stochastic systems

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An initial rotor position estimation method for switched reluctance motor without using machine parameter

An initial rotor position estimation method for switched rel...

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International Conference on Electrical Machines and Systems, ICEMS 2007

作者： Jitkreeyarn, P. Kachapornkul, S. Somsiri, P. Tungpimolrut, K. Akira, Chiba Tadashi, Fukao Industrial Control and Automation Laboratory Section National Electronics and Computer Technology Center Department of Electrical Engineering Faculty of Science and Technology Tokyo University of Science

ISBN: (纸本)8986510081

In this paper a method to estimate the initial rotor position of the switched reluctance motor (SRM) at the stand still condition is proposed. The proposed method can be implemented by the simple microcontroller based system, and it is not necessary to know the magnetization curves. The impulse gate drive signal is applied and the winding current is detected and its approximate value is used for calculating the rotor position. The compensation method to reduce the estimation error thorough one cycle is also mentioned. The proposed method is implemented with the 6-stator-pole and 4-rotor-pole, 1.5 kW 3-phase switched reluctance motor.

关键词： Error compensation

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A design of 15 kW switched reluctance motor for electric vehicle applications

A design of 15 kW switched reluctance motor for electric veh...

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International Conference on Electrical Machines and Systems, ICEMS 2007

作者： Kachapornkul, S. Jitkreeyarn, P. Somsiri, P. Tungpimolrut, K. Akira, Chiba Tadashi, Fukao Industrial Control and Automation Laboratory Section National Electronics and Computer Technology Center Department of Electrical Engineering Faculty of Science and Technology Tokyo University of Science

In this paper, a design of the 3-phase, 6-stator-pole and 4-rotor-pole, 15 kW switched reluctance motor for the propulsion system of the electric vehicle is presented. Its performance such as the torque per volume and... 详细信息

ISBN: (纸本)8986510081

关键词： Electric vehicles

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ML DESIGNERTM as simulation tool in robotics

ML DESIGNERTM as simulation tool in robotics

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International Conference on Telecommunications in Modern Satellite, Cable and Broadcasting Service (TELSIKS)

作者： Mario Schulz Ivan Velickovic Sasa Andelkovic Volker Zerbe Goran S. Dordevic Computer Science and Automation Faculty System and Control Theory Department Technical University Ilmenau Ilmenau Germany Faculty of Electronics engineering Robotics Lab University of Nis Nis Serbia

Robots are complex systems that require multidisciplinary approach to development. Hence, both research and production of a robotic system require a tool that would provide means for coordination between teams with different areas of expertise as well as the ability to integrate, simulate and debug the system in a comprehensive way. Also, with the growing popularity of service robotics, research and modeling of human-machine interaction gains the attention. From a simulation tool, it is expected to support the means for describing this interaction. For that purpose we are investigating the ML Designer TM , not just as a possible simulation tool, but also as a modeling and design paradigm. For verification purposes we will compare it against MATLAB Simulink TM . A pneumatic system will be modeled with both tools and a comparison will be performed.

关键词： Mathematical model Robot kinematics Cleaning System testing Power system modeling MATLAB Pneumatic systems Control systems Level control Costs

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