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International Conference on advanced Communication Technology (ICACT)

作者： Prabhudutta Ray Department of Computer Science &Engineering Center for Development of Advanced Computing Noida India

Mobile ad hoc network is a collection of mobile hosts, which can communicate with each other using wireless interfaces and can also dynamically form a network topology where each node can act as router to forwarding the packets to other nodes. These networks are in high demand due to the ease and speed in setting up such networks. Due to the inherent vulnerabilities of wireless medium and node mobility make such network highly susceptible to malicious attacks. Things are getting worst when some nodes getting hijacked or compromised and make this network to stop from the smooth workings. This paper proposes the host based intrusion detection architecture to identify the malicious node and provide security support to continue the smooth workings of this network.

关键词： Intrusion detection Mobile ad hoc networks Peer to peer computing Routing Ad hoc networks Network topology Protection Computer architecture Computer networks Communication system security

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Design and Implementation of NAREGI SuperScheduler Based on the OGSA Architecture

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Journal of Computer Science & Technology 2006年第4期21卷 521-528页

作者： Satoshi Matsuoka Masayuki Hatanaka Yasumasa Nakano Yuji Iguchi Toshio Ohno Kazushige Saga Hidemoto Nakada Global Scientific Information and Computing Center Tokyo Institute of Technology 2-12-10okayama Meguro-ku Tokyo 152-8550 Japan Center for Grid Research and Development National Institute of Informatics 1-105 Kanda-Jinbocho Chiyoda-ku Tokyo 101-0051 Japan Linux Software Development Div. Server Systems Unit. Fujitsu Limited 130 Miyamoto Numazu-shi Shizuoka410-0396 Japan Grid Technology Research Center National Institute of Advanced Industrial Science and Technology 1-18-13 Sotokanda Chiyoda-ku Tokyo 101-0021 Japan

NAREGI is a 5-year Japanese National Grid Project during 2003--2007, whose chief aim is to develop a set of grid middleware to serve as a basis for future e-Science. NAREGI also aims to lead the way in standardization of grid middleware, based on the OGSA architecture. Its super-scheduler is based on the proposed OGSA-EMS Architecture, in that it becomes the first working implementation that implements the documented component relationships within the OGSA-EMS architecture document v.l.0. Through the efforts and experience in the design and implementation, it has been confirmed that the documented OGSA-EMS architecture is quite feasible, but will require significant amount of refinement and speed improvements to finalize its detailed specifications. The super-scheduler also supports co-allocation across multiple sites to support automated execution of grid-based MPIs that execute across machines. Such a resource allocation requires sophisticated interactions between the OGSA-EMS components not covered in the current OGSA-EMS architecture, some of which are non-trivial. Overall, job scheduling with OGSA-EMS has proven to not only work, but also that its job allocation and execution time is within reasonable bounds.

关键词： grid scheduling resource management open grid services architecture OGSA

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Single-hop wavelength assignment using an ant algorithm in WDM MESH network

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WSEAS Transactions on Computers 2006年第2期5卷 294-300页

作者： Chin, Tan Saw Singh, Y.P. Faculty of Information Technology Multimedia University Jalan Multimedia 63100 Cyberjaya Malaysia Center for Development of Advanced Computing C-56/1. Sector-62 Noida U.P.-201307 India

In this paper, a RWA linear programming formulation was formulated and ILP solver was used along with good approximation techniques (heuristic) to solve the static RWA problem The objective was to maximize the one hop traffic, given a set of lightpath requests/traffic demand. However, the proposed heuristic has the limitation of stagnation. Thus we applied Ant colony optimization (ACO) combined with heuristic algorithm to solve the assignment problem to obtain best assignment with highest objective value. The ACO based algorithm can outperform the comparison scheme and provide a better performance and more reliable than the proposed heuristic and ILP solver. The claim made in the paper for the proposed new heuristic and ACO are supported by experimental results.

关键词： Computer networks

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Effective TARO pattern generation

Effective TARO pattern generation

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23rd IEEE VLSI Test Symposium, VTS 2005

作者： Park, Intaik Al-Yamani, Ahmad McCluskey, Edward J. Center for Reliable Computing Stanford University United States TNT Advanced Development LSI Logic Corporation United States

ISBN: (纸本)0769523145

TARO test patterns are transition fault test patterns that sensitize each transition fault to all of the outputs that can be reached from the fault location. We were not able to identify any ATPG tool that can generate TARO test patterns directly. This paper describes a technique to use an existing transition fault ATPG tool to efficiently generate TARO test patterns. This technique was used to generate TARO patterns for the ELF35 test chip. When these patterns were applied to the ELF 35 chips, all of the defective chips were discovered (no test escapes). © 2005 IEEE.

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Design of an environmental information system for monitoring water and air quality in urban areas

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Disaster Prevention and Management: An International Journal 2005年第3期14卷 326-342页

作者： Patra, B. Pradhan, B. Center for Development of Advanced Computing (CDAC) Pune University Pune India Faculty of Engineering and Computer Technology Asian Institute of Medicine Science and Technology (AIMST) Kedah Darul Aman Malaysia

Purpose – Over the past 50 years India has been experiencing rapid population growth, causing the migration of a large part of the population to the cities looking for livelihood. This resulted in massive increments of population in the cities that has led to the increase of pollution. Gujarat, being a highly industrialized state, is a case in point. The systems for treatment and water disposal of this state are highly challenged. The northwestern state of Gujarat has no effective systems for treatment or disposal of waste water. The purpose of this article is to address this problem, introducing a geographic information system (GIS) approach to record the characterization, analyze the needs and generate a conceptual GIS database in the state. Design/methodology/approach – This paper outlines the background, suggested methodology for the development of a GIS database pollution dependent control of water pollution in the state of Gujarat in India. The present research is to install a document management system that has been developed in providing organizing chart, sorting, querying and retrieving of key data. A computerized laboratory information system on monitoring of quality of ambient air has been developed. Findings – An integrated GIS database has been generated involving creation of pollutant contours, querying and visualizing the query output in spatial and nonspatial form. Originality/value – The authors have created a complete geospatial database for the environmental monitoring for the whole state of Gujarat. They have dealt with nearly 36,000 different files from different sources and put them together to create the database. A computerized laboratory information system on monitoring of quality of ambient air has been developed. Frontend application programs have been developed in Visual Basic and the backend database to integrate the laboratory data and the existing data in oracle database. © 2005, Emerald Group Publishing Limited

关键词： Geographic information systems India Pollution control

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Effective TARO pattern generation

Effective TARO pattern generation

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VLSI Test Symposium

作者： Intaik Park A. Al-Yamani E.J. McCluskey Center of Reliable Computing University of Stanford USA TNT Advanced Development LSI Logic Corporation USA

TARO test patterns are transition fault test patterns that sensitize each transition fault to all of the outputs that can be reached from the fault location. We were not able to identify any ATPG tool that can generate TARO test patterns directly. This paper describes a technique to use an existing transition fault ATPG tool to efficiently generate TARO test patterns. This technique was used to generate TARO patterns for the ELF35 test chip. When these patterns were applied to the ELF35 chips, all of the defective chips were discovered (no test escapes).

关键词： Fault detection Automatic test pattern generation Test pattern generators Logic testing Flip-flops Large scale integration Fault location Ground penetrating radar Geophysical measurement techniques Writing

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Convolutive source separation and selective null beamforming using a pilot-based channel estimation technique

Convolutive source separation and selective null beamforming...

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advanced Signal Processing Algorithms, Architectures, and Implementations XV

作者： Hwang, Jeonghun Lee, Jonghyun Chun, Joohwan Agency for Defense Development Technology Research Center Yuseong P.O.Box Daejeon 305-600 Korea Republic of Nex1 Future 148-1 Mabuk-ri Gusung-eup Yongin-city Gyeonggi-do 449-912 Korea Republic of Scientific Computing Laboratory Dept. of Electrical and Computer Science Korea Advanced Institute of Science and Technology Daejeon Korea Republic of

In this paper, we propose new convolutive source separation and selective null beamforming methods using a pilot-based channel estimation technique in reverberation environments. First, we show convolutive sound source separation methods in determined and overdetermined cases. For the acoustic channel estimation, we propose a new channel estimation method using pilot sequence conceptually similar to a pilot code in wireless communication. Pilot sequence is composed of sum of sinusoidal sequences at frequencies matching STFT (Short-Time Fourier Transform) frequencies. Proposed channel estimation method considered the effect of spectral sampling with frequencies matching STFT frequencies provides precise channel information we want to know and has less computational loads than other competitive methods. After acoustic channel estimation, we can separate the signals from observations using inverse(or pseudo-inverse) operator of estimated channel matrix at each frequency bins. We show the proposed method has better performance than other competitive methods in various measures. Second, we propose selective null beamforming using a pilot-based channel technique. If we use same pilot sequence at each transmitter, we can obtain relative difference of acoustic channel between transmitters as well as between microphone array. From estimated channel information, we can calculate beamforming weight vectors to null the signals at target location and to transmit the signals to desired location without distortion using singular value decomposition at each frequency bins. We evaluate the performance of proposed methods through experiments as well as the computer simulations.

关键词： Communication channels (information theory)

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Grid portal interface for interactive use and monitoring of high-throughput proteome annotation

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First International Workshop on Life Science Grid, LSGRID 2004 - Grid computing in Life Science

作者： Shahab, Atif Chuon, Danny Suzumua, Toyotaro Li, Wilfred W. Byrnes, Robert W. Tanaka, Kouji Ang, Larry Matsuoka, Satoshi Bourne, Philip E. Miller, Mark A. Arzberger, Peter W. Bioinformatics Institute 30 Biopolis Street #07-01 Matrix Singapore 138671 Singapore Dept. of Mathematical and Computing Sciences 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan Global Scientific Information and Computing Center 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan Research and Development for Applied Advanced Computational Science and Technology Japan Science and Technology Agency 4-1-8 Honcho Kawaguchi Saitama 332-0012 Japan Department of Pharmacology San Diego Supercomputer Center University of California San Diego 9500 Gilman Drive San Diego CA 92093 United States Life Sciences Initiatives San Diego Supercomputer Center University of California San Diego 9500 Gilman Drive San Diego CA 92093 United States

ISBN: (纸本)3540252088

High-throughput proteome annotation refers to the activity of extracting information from all proteins in a particular organism using bioinformatics software on a high performance computing platform such as the grid. The Encyclopedia of Life (EOL) project [1] aims to catalog all proteins in all species for public benefits using an Integrative Genome Annotation Pipeline [2] (iGAP). The intrinsic complexity of the pipeline makes iGAP an ideal life sciences application to drive grid software development. It is a flagship application for the TeraGrid project [3]. The deployment of iGAP on the grid using grid middleware and mediator software has been described previously [4]. The heterogeneous and distributed computing environment on the grid requires an interactive user interface where jobs may be submitted and monitored. Here we describe our international collaborative effort in creating a grid portal solution for grid computing in life sciences under the auspices of PRAGMA [5]. Specifically, the development of GridMonitor for interactive monitor of iGAP workflow, and the use of a GridSpeed [6] generated iGAP application portal are described. The portal solution was part of the EOL demonstration at Supercomputing 2003 (SC'03) [7], where resources from 6 institutions on 5 continents are utilized to annotate more than 36,000 proteins from various species. It is a testimony to the necessity and expediency for international collaboration in an increasingly global grid computational environment to advance life sciences research. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Interfaces (computer)

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A robust & secure system for performing engineering analysis and design in a distributed environment

A robust & secure system for performing engineering analysis...

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Collect. of Pap. - 45th AIAA/ASME/ASCE/AHS/ASC Struct., Struct. Dyn. and Mater. Conf.;12th AIAA/ASME/AHS Adapt. Struct. Conf.;6th AIAA Non-Deterministic Approaches Forum;5th AIAA Gossamer Spacecraft Forum

作者： Liao, Li Talya, Shashishekara S. Kolonay, Raymond M. GE Global Research Center 1 Research Circle Schenectady NY 12301 Struct. Des. and Development Branch Air Force Research Laboratory Air Vehicles Directorate WPAFB OH 45433 Advanced Computing Technologies

In today's fast paced economy product design is becoming increasingly complex and requires tighter integration of the engineering and business processes not only within the individual businesses, but also across enterprises. This high demand for real-time business-to-business collaboration across enterprises requires a robust and secure channel not only for data exchange but also for process interaction. This paper presents a robust and secure collaborative environment to enable engineers to perform complex design analysis such as CAD, CAE, PDM, optimization, cost modeling, etc. across the network and Business firewalls. However, maintaining the secure communication protocol and close monitoring of the distributed computing process across network can present itself as a significant challenge. A multi-level security approach is developed to prevent any potential security and/or communication failure. This paper presents a typical engineering design scenario between General Electric (GE) and one of its vendors. In particular it will demonstrate how this environment can facilitate the communication of both data and applications across enterprise boundaries to tightly integrate a vendor into the GE's Design for Six Sigma process. Copyright © 2004 General Electric Company.

关键词： Distributed computer systems

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Many cooks improve the broth: Developing an inter-institutional, online, bachelor of science degree in Information Technology 03

Many cooks improve the broth: Developing an inter-institutio...

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4th Conference on Information Technology Curriculum, CITC4 2003

作者： Dehoney, Joanne Booth, Larry Lau, Kam Fui Reichgelt, Han Rutherfoord, Rebecca H. Stewart, Jeff Collaborative Development Consultant Advanced Learning Technologies University System of Georgia Gwinnett University Center 1000 University Center Ln. Bldg B LawrencevilleGA30043 United States IT Department Head College of Information and Mathematical Sciences Clayton College and State University MorrowGA30260 United States School of Computing Armstrong Atlantic State University 11935 Abercorn Street SavannahGA31419 United States Department of Information Technology Georgia Southern University StatesboroGA30461 United States Department Information Technology Southern Polytechnic State Univ. 1100 S. Marietta Parkway MariettaGA30060 United States Division of Information Technology Macon State College 100 College Station Dr. MaconGA31206 United States

ISBN: (纸本)1581137702

Five state colleges and universities in the University of Georgia System are collaborating to develop an online B.S. IT degree, slated to open for enrollment in Fall 2004. The participating institutions range in size and mission from large regional universities to regional colleges. The process of jointly designing a degree to be offered either wholly or substantially online for a non-traditional audience has produced several noteworthy intermediate outcomes. The first peripheral but important outcome is the benefit of collaborative self-study, which has already affected participating programs. Second, online BSIT planning has informed the definition of state-level course requirements for Associate degree level concentrations in Information Technology. In terms of the program itself, intermediate outcomes include a curriculum developed by consensus in reference to emerging accreditation guidelines, closely examined program and course prerequisites, and a process for jointly planning, reviewing and certifying courses. This paper first describes the project's context, background and the needs assessment, then briefly describes the technological and administrative infrastructure required to deliver the degree collaboratively and at a distance. We focus on the program's impact to this point, curricular structure and rationale, and conclude with our expectations for the project's future. Copyright 2003 ACM.

关键词： E-learning

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