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Dynamic QOS routing in a mesh network

Journal of the Indian Institute of science 2006年第6期86卷 785-789页

作者： Varaprasad, G. Wahidab.nu, R.S.D. Department of Computer Science and Engineering B. M. S. College of Engineering Bangalore 560 019 India Department of Electronics and Communication Engineering Government College of Engineering Salem 636 011 India

This paper proposes an algorithm which helps in reducing the network traffic at intermediate nodes in a mesh network. This model analyses the network performance b. using queuing theory and provides QoS for end-users. The performance metrics are mean waiting time, throughput and delay. Each node is assumed to b. M/M/m model in the network. The major focus of this work is to provide b.tter QoS for end-users b. effective utilization of b.ndwidth and b.lancing load over the network. © Indian Institute of science.

关键词： Telecommunication traffic

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Intelligent Web.Mining Model to Enhance Knowledge Discovery on the Web

Intelligent Web Mining Model to Enhance Knowledge Discovery ...

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IEEE International Conference on Parallel and Distrib.ted Computing, Applications and technologies (PDCAT)

作者： Sunil Kr. Pandey R.b. Mishra Department of Computer Science SMS Varanasi India Department of Computer Engineering I. T. B. H. U. Varanasi India

The large size and the dynamic nature of the Web.highlight the need for continuous support and updating of Web.b.sed information retrieval systems. Crawlers facilitate the process b. following the hyperlinks in Web.pages to automatically download a partial snapshot of the Web. This paper describ.s some details ab.ut the architecture of a fully implemented a multiagent Web.search system I-Spider for the Internet. Its architecture is b.sed on autonomous software agents and the paper is focused on the communication among them. The overall system architecture is b.sed on a multi-agent paradigm. Agents collab.rate together HTML pages from the World Wide Web.and treat them in order to b. ab.e to retrieve those pages from sub.equent users' queries. Crawling Agent collab.ration is required in order to decide the URLs that should b. first retrieved. Sub.equent page treatment consists on first filtering the pages so that HTML format is transformed into XML and second indexing them so that information retrieval can b. performed online

关键词： Web.mining computer architecture Information retrieval Collab.ration HTML Intelligent agent Crawlers Web.pages Service oriented architecture Web.search

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Determination of the Grey Level Ranks for the Segmentation of Textured Images

Determination of the Grey Level Ranks for the Segmentation o...

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IEEE International Symposium on Industrial Electronics (ISIE)

作者： Z. Ameur A. Adane S. Ameur Faculty of Electrical Engineering and Computer Science Department of Electronics Laboratory of Random Phenomena Analysis and Modeling LAMPA Mouloud Mammeri University Tizi Ouzou Algeria Faculty of Electronics and Computer Science Department of Telecommunications Laboratory of Image Processing and Radiation University of Sciences and Technology of Algiers U. S. T. H. B. Bab-Ezzouar Algeria

In many cases, an image is made of various types of texture. Such diversity can b. usefully exploited to get a suitab.e decomposition of the image into typical classes and then, identify its constitutive elements. Among the approaches used to segment textured images, those b.sed on the statistical analysis of the neighb.rhood of each pixel seem to b. most efficient. In this paper, this kind of method is implemented, which consists in coding the pixels surrounding each point of the image b. taking into account the path traveling through them and their grey levels. The rank vectors namely the codes ob.ained for all the possib.e paths, are then classified using the K-means algorithm. Considering the 24- rank vectors, this method is tested on different images of the b.odatz alb.m and compared with Laws filters and GLCM. It yields a satisfactory reproduction of the image contours and a classification ratio exceeding 98 %. The 24 rank b.sed-method is also applied to meteorological images collected b. Meteosat over Europe and North Africa during Decemb.r 1994. It is found that these images can b. segmented into eight typical classes assignab.e to the soils, the seas and the clouds ob.erved in the regions under study.

关键词： Image segmentation Pixel Statistical analysis Image coding Testing Filters Meteorology Europe Africa Soil

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SVM b.sed System for classification of Microcalcifications in Digital Mammograms

SVM Based System for classification of Microcalcifications i...

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Annual International Conference of the IEEE engineering in Medicine and b.ology Society (EMb.)

作者： Sukhwinder Singh Vinod Kumar H.K. Verma Dilb.g Singh Department of Computer Science and Information Engineering Sant Longowal Institute of Engineering and Technology India Department of Electrical Engineering Indian Institute of Technology Roorkee Roorkee India Department of Instrumentation & Control Engineering Dr. B. R. Ambedkar National Institute of Technology Jalandhar - 144 011 Punjab INDIA. e-mail: singhd@nitj.ac.in

This paper presents a SVM b.sed computer-aided diagnosis (CAD) system for the characterization of clustered microcalcifications in digitized mammograms. First, the region of interest (ROI) in mammogram is enhanced using morphological enhancement (MORPHEN) method. Second, pixels in potential microcalcification regions are segmented out b. using edge detection and morphological operations. Third, features b.sed on shape, texture and statistical properties are extracted from each region. Finally, these features are fed to a SVM b.sed classifier for identifying the clusters as either b.nign or malignant. The SVM with Rb. kernel gave A z =0.9803 with 97% accuracy and the SVM with polynomial kernel gave A z =0.9541 with 95% accuracy

关键词： Support vector machines Support vector machine classification computer aided diagnosis Image edge detection Kernel Coronary arteriosclerosis Cancer detection b.east cancer Feature extraction b.ckground noise

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A method to represent restricted classes of planar graphs in the enhanced spatial relational model PLA, b.sed on Halin graphs

A method to represent restricted classes of planar graphs in...

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INES 2006: 10th International Conference on Intelligent engineering Systems 2006

作者： Novák, Ágnes b. Tuza, Zsolt Faculty of Information Technology Péter Pázmány Catholic University Práter u. 50/A H-1088 Budapest Hungary Bánki Donát Faculty of Mechanical Engineering Budapest Tech. Népszínház u. 8 H-1081 Budapest Hungary Computer and Automation Institute Hungarian Academy of Sciences Kende u. 13-17 H-1111 Budapest Hungary Department of Computer Science Pannon University H-8200 Veszprém Hungary

ISBN: (纸本)0780397088

In this paper we enhance the PLA relational spatial model for storing a special type of planar graphs. The PLA-model is very handy to store 2-connected planar graphs, b.t it is not capab.e at all to store some other important classes of planar graphs: trees and, more generally, planar graphs with cut edges. In this paper we propose a method for their representation. The main idea is b.sed on Halin graphs that are planar graphs of minimum degree 3 from which the removal of the b.undary edges of the infinite region yields a tree. Our results are to identify Halin graphs from the model, and to represent trees as virtual Halin graphs in order to store them without major alteration of the original PLA-Model. © 2006 IEEE.

关键词： Intelligent systems

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A Method to Represent Restricted Classes of Planar Graphs in the Enhanced Spatial Relational Model PLA, b.sed on Hahn Graphs

A Method to Represent Restricted Classes of Planar Graphs in...

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IEEE International Conference on Intelligent engineering Systems (INES)

作者： A.b. Novak Z. Tuza Faculty of Information Technology Péter Pázmány Catholic University Budapest Hungary Bánki Donát Faculty of Mechanical Engineering Budapest Tech Budapest Hungary Hungarian Academy of Sciences Computer and Automation Institute Budapest Hungary Department of Computer Science Pannon University Veszprém Hungary

关键词： Programmab.e logic arrays Tree graphs Information technology Automation Mechanical engineering computer science b.partite graph

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Research on optical core networks in the e-Photon/ONe network of excellence

Research on optical core networks in the e-Photon/ONe networ...

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INFOCOM 2006: 25th IEEE International Conference on computer Communications

作者： Callegati, F. Aracil, J. Wosinska, L. Andriolli, N. Careglio, D. Giorgetti, A. Fdez-Palacios, J. Gauger, C. Klinkowski, M. Gonzáles De Dios, O. Hu, G. Karasan, E. Matera, F. Overb., H. Raffaelli, C. Rea, L. Sengezer, N. Tornatore, M. Vlachos, K. D.E.I.S. Unversity of Bologna Viale Risorgimento 2 40123 Bologna Italy Escuela Politecnica Superior Universidad Autonoma de Madrid Campus de Cantoblanco 28049 Madrid Spain Isafjordsgatan 24 164 40 Kista Sweden Scuola Superiore sant'Anna Via Moruzzi 1 56124 Pisa Italy Univeristat Politcnica de Catalunya Jordi Girona 1-3 08034 Barcelona Spain Telefónica Investigación y Desarrollo C/ Emilio Vargas N 6 28043 Madrid Spain University of Stuttgart IKR Pfaffenwaldring 47 70569 Stuttgart Germany Bilkent Universitesi Elektrik Elektronik Muhendisligi PK:06800 Ankara Turkey Fondazione Ugo Bordoni via B. Castiglione 59 00142 Roma Italy Norwegian University of Science and Technology O. S. Bragstadsplass 2B Norway Dipartimento di Elettronica e Informazione Politecnico di Milano Via Ponzio 34/5 20133 Milano Italy Computer Engineering and Informatics Dept. University of Patras GR26500 Rio Greece

This papers reports the advances in Optical Core networks research coordinated in the framework of the e-Photon/ONe and e-Photon/ONe+ networks of excellence.

ISBN: (纸本)1424402212

This papers reports the advances in Optical Core networks research coordinated in the framework of the e-Photon/ONe and e-Photon/ONe+ networks of excellence.

关键词： Optical communication

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Edge preserving image compression technique using adaptive feed forward neural network

Edge preserving image compression technique using adaptive f...

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IASTED International Conference on Internet and Multimedia Systems and Applications, EuroIMSA 2005

作者： Roy, Senjuti b.su Kayal, Kausik Sil, Jaya Department of Computer Science and Engineering University of Calcutta 92 APC Road Kolkata-700009 India Department of Computer Sc. and Tech. Bengal Engineering and Science University Shibpur B. Garden Howrah-711103 India

ISBN: (纸本)0889864861

The aim of the paper is to develop an edge preserving image compression technique using one hidden layer feed forward neural network of which the neurons are determined adaptively. Edge detection and multi-level thresholding operations are applied to reduce the image size significantly. The processed image b.ock is fed as single input pattern while single output pattern has b.en constructed from the original image unlike other neural network b.sed techniques where multiple image b.ocks are fed to train the network. The paper proposes initialization of weights b.tween the input and lone hidden layer b. transforming pixel coordinates of the input pattern b.ock into its equivalent one-dimensional representation. Initialization process exhib.ts b.tter rate of convergence of the b.ck propagation training algorithm compare to the randomization of initial weights. The proposed scheme has b.en demonstrated through several experiments including Lena that show very promising results in compression as well as in reconstructed images over conventional neural network b.sed techniques availab.e in the literature.

关键词： Image compression

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Secure SCADA communications, monitoring and control over the internet

Secure SCADA communications, monitoring and control over the...

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18th International Conference on computer Applications in Industry and engineering 2005, CAINE 2005

作者： Patel, Sandip C. Graham, James H. Ralston, Patricia Tantalean-Carrasco, Rob.rto Dept. of Computer Engineering and Computer Science J. B. Speed School of Engineering University of Louisville Louisville KY 40292 United States J. B. Speed School of Engineering University of Louisville Louisville KY 40292 United States

ISBN: (纸本)9781604234817

This paper describ.s the details of a proposed new architecture and implementation that enab.es monitoring of the SCADA-controlled system for chemical process control over the Internet. This Internet-b.sed SCADA system makes it possib.e to get the current process values from an outstation and display them on a web.b.owser, and to securely send control messages to the outstation from the same web.b.owser. This new monitoring and control system is referred to as secure SCADA over the Internet (SSOI). The ob.ective of SSOI is to enhance existing computer-b.sed process control systems b. providing an extra facility to monitor and control such processes from remote locations. The proposed SSOI strategy has b.en tested b. monitoring and controlling a water-level control system located in the Chemical engineering Department at the University of Louisville.

关键词： Web.b.owsers

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Application of model-b.sed technology systems for autonomous systems

Application of model-based technology systems for autonomous...

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Infotech at Aerospace: Advancing Contemporary Aerospace technologies and Their Integration

作者： Cooke, Daniel E. Gelfond, Michael Rushton, J. Nelson Hu, Howard Computer Science Department Texas Tech University Lubbock TX 79409 United States Lyndon B. Johnson Space Center NASA Houston TX 77058 United States

ISBN: (纸本)1563477394

We are working on NASA-relevant declarative and procedural languages to help meet the challenges posed b. future long distance and duration missions. These languages enab.e the rapid development and deployment of dependab.e onb.ard and ground-b.sed delib.rative and computational systems. In this paper, we present an overview of how we are applying declarative languages for delib.ration, numerical computations, and reactive control. Copyright © 2005 b. the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

关键词： computer programming languages

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