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International Conference on Computational Intelligence, Communication Systems and Networks, CICSYN

作者： Lalit Kumar Rajesh Kushwaha Rishi Prakash Centre of Development of Advanced Computing Center for Embedded Computer Systems Noida India

This paper describes the design & development of small Linux operating system for browser based digital set top box. A set-top box is a device that enables a television set to receive and decode digital television (DTV) broadcasts and also enables a television set to become a user interface to access the Internet. A Small Linux root file system having all necessary basic files which are needed for booting the system in graphical user interface is customized in such a way that it supports direct to home (DTH) digital TV and a small size open source Web Browser. These customizations and developments are very specific to Digital TV services like watching free to air TV channels, recording of programs, broadcast a TV channel over local area network as a server and request for video on demand (VOD) as a client, more over it will support Internet Web Browser, USB, LAN connectivity and IR sensor for remote control. The current dynamics in this work will bring in the major changes in the user experience of watching digital television and surfing Internet on television.

关键词： Linux Operating systems Digital TV TV broadcasting Internet Local area networks Decoding User interfaces File systems Graphical user interfaces

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Concept Analysis for Class Cohesion

Concept Analysis for Class Cohesion

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(CSMR) European Conference on Software Maintenance and Reengineering

作者： Padmaja Joshi Rushikesh K. Joshi Department of Computer Science and Engineering Center of Development of Advanced Computing Indian Institute of Technology Bombay Mumbai India Department of Computer Science and Engineering Indian Institute of Technology Bombay Mumbai India

A concept lattice based approach for analysis of class cohesion is presented. The approach facilitates rapid identification of less cohesive classes. It also helps identify less cohesive methods, attributes and classes in one go. Further, the approach guides refactorings such as extract class, move method, localize attributes and remove unused *** effectiveness of the technique is demonstrated through examples.

关键词： Lattices Microscopy Software maintenance Computer science Data mining Information analysis Unified modeling language Object oriented modeling Bridges Feedback

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FSM based FM0 and Miller encoder for UHF RFID Tag Emulator

FSM based FM0 and Miller encoder for UHF RFID Tag Emulator

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IEEE International Advance computing Conference, IACC

作者： M Ayoub Khan Manoj Sharma R Brahmanandha Prabhu Communications Research Center Ministry of Communications and I.T. Govt. of India Noida India Communications Research Center Center for Development of Advanced Computing (CDAC) Ministry of Communications and I. T. Govt. of India Noida India brahmanandha@cdacnoida.in

The radio frequency identification system (RFID) is becoming very popular system wireless technologies. The UHF RFID tag emulator is a part of RFID testing tools. The UHF RFID tag emulator would be imitating the behavior of RFID Tag. The UHF RFID tag emulator (860 Mhz to 960 MHz) is aimed for testing the RFID systems and also as a general-purpose communication link to other electronic devices. In this work, we have presented high-level architecture of tag emulator and the design of FM0 encoder and Miller encoder. As motivated by finite state machine, encoders are discussed with particular focus to use the RFID emulator as data transport device and debugging tool. The synthesis result shows that FSM design is efficient and we have achieved operating frequency of 192.641 MHz and 188.644 MHz for FM0 and Miller encoders.

关键词： RFID tags Radiofrequency identification Communication system control Frequency Communication system security Data security System testing Debugging Control systems Software systems

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Named entity recognition for Manipuri using support vector machine

PACLIC 23 - Proceedings of the 23rd Pacific Asia Conference ...

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PACLIC 23 - Proceedings of the 23rd Pacific Asia Conference on Language, Information and Computation 2009年 2卷 811-818页

作者： Singh, Thoudam Doren Nongmeikapam, Kishorjit Ekbal, Asif Bandyopadhyay, Sivaji Center for Development of Advanced Computing Gulmohar Cross Road No 9 Juhu Mumbai-400049 India Computer Science and Engineering Department Jadavpur University Kolkata-700032 India Department of Computational Linguistics University of Heidelberg Im Neuenheimer Feld 325 69120 Heidelberg Germany

ISBN: (纸本)9789624423198

This paper reports about the development of a Manipuri NER system, a less computerized Indian language. Two different models, one using an active learning technique based on the context patterns generated from an unlabeled news corpus and the other based on the well known Support Vector Machine (SVM), have been developed. The active learning technique has been considered as the baseline system. The Manipuri news corpus has been manually annotated with the major NE tags, namely Person name, Location name, Organization name and Miscellaneous name to apply SVM. The SVM based system makes use of the different contextual information of the words along with the variety of orthographic word-level features which are helpful in predicting the NE classes. In addition, lexical context patterns generated using the active learning technique have been used as the features of SVM in order to improve performance. The system has been trained and tested with 28,629 and 4,763 wordforms, respectively. Experimental results show the effectiveness of the proposed approach with the overall average Recall, Precision and F-Score values of 93.91%, 95.32% and 94.59% respectively. © 2009 by Thoudam Doren Singh, Kishorjit Nongmeikapam, Asif Ekbal, and Sivaji Bandyopadhyay.

关键词： Support vector machines

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Software-based, low-cost fault detection for microprocessors

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IEEE Potentials 2008年第1期27卷 37-41页

作者： Saha, Goutam Kumar Center for Development of Advanced Computing Kolkata India IEEE

An advanced error detection method known as PSW (Processor status word)-NOP (No operation) for the detection of operational errors in the microprocessors is presented. This method is very much cost effective than other approaches such as fingerprinting and masking redundancy. It is extremely suitable for improving the reliability of microprocessors based systems having low fault tolerance. The PSW-NOP method helps the programmer in the insertion of the detection program code at the critical parts of an application program, which are useful for the fault detection even if the faults are related to the programmer itself. It is a very much useful tool for transient susceptibility testing in a microprocessor system and in the supplementation of the error correcting codes. The PSW-NOP provides an economical solution to the error detection problem as in this multiple versions of code or hardware are not needed. A dependable software also can be created with the help of the PSW-NOP approach.

关键词： Microprocessor chips

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Adaptive CPG based coordinated control of healthy and robotic lower limb movements

Adaptive CPG based coordinated control of healthy and roboti...

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IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： Jae-Kwan Ryu Nak Young Chong Bum Jae You Henrik Christensen Mechanical Engineering Research and Development Laboratory Gyeonggi South Korea School of Information Science Japan Advanced Institute of Science and Technology Ishikawa Japan Center of Cognitive Robotics Research Korea Institute of Science and Technology Seoul South Korea College of Computing Georgia Institute of Technology Atlanta GA USA

This paper proposes an adaptive CPG based controller for a lower limb prosthesis consisting of online trajectory generation and interlimb coordination. The adaptive CPG can produce multidimensional rhythmic patterns and modulate their frequency by tuning relevant parameters in an autonomously way adapting to a changing periodicity of external signals. Also, to increase the stability of the prosthesis, a spring-damper component is attached between the hip and ankle joints, allowing the absorption of impulsive ground reaction forces at landing. We verify the validity of the proposed controller with a simulated humanoid robot through the investigation of the self-coordination between the healthy and robotic legs.

关键词： Programmable control Adaptive control Robot kinematics Prosthetics Humanoid robots Multidimensional systems Frequency modulation Tuning Stability Hip

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The Asian network-based speech-to-speech translation system

The Asian network-based speech-to-speech translation system

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IEEE Workshop on Automatic Speech Recognition and Understanding

作者： Sakriani Sakti Noriyuki Kimura Michael Paul Chiori Hori Eiichiro Sumita Satoshi Nakamura Jun Park Chai Wutiwiwatchai Bo Xu Hammam Riza Karunesh Arora Chi Mai Luong Haizhou Li National Institute of Information and Communications Technology Japan Electronics and Telecommunications Research Institute South Korea National Electronics and Computer Technology Center Thailand Institute of Automation CASIA Chinese Academy and Sciences China Agency for Assessment and Application of Technology (BPPT) Indonesia Centre for Development of Advanced Computing India Institute of Information Technology IOIT Vietnam Institute for Infocomm Research Singapore

ISBN: (纸本)9781424454785

This paper outlines the first Asian network-based speech-to-speech translation system developed by the Asian Speech Translation advanced Research (A-STAR) consortium. The system was designed to translate common spoken utterances of travel conversations from a certain source language into multiple target languages in order to facilitate multiparty travel conversations between people speaking different Asian languages. Each A-STAR member contributes one or more of the following spoken language technologies: automatic speech recognition, machine translation, and text-to-speech through Web servers. Currently, the system has successfully covered 9 languages-namely, 8 Asian languages (Hindi, Indonesian, Japanese, Korean, Malay, Thai, Vietnamese, Chinese) and additionally, the English language. The system's domain covers about 20,000 travel expressions, including proper nouns that are names of famous places or attractions in Asian countries. In this paper, we discuss the difficulties involved in connecting various different spoken language translation systems through Web servers. We also present speech-translation results on the first A-STAR demo experiments carried out in July 2009.

关键词： Natural languages Automatic speech recognition Telecommunication computing Speech synthesis Web server Communications technology Computer networks Paper technology Automation Information technology

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Parallelization of low-level computer vision algorithms on clusters

Parallelization of low-level computer vision algorithms on c...

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2nd Asia International Conference on Modelling and Simulation, AMS 2008

作者： Kadam, Sanjay Scientific and Engineering Computing Group Center for Development Advanced Computing Pune University Campus Ganeshkhind Pune 411 007 Maharashtra India

ISBN: (纸本)9780769531366

In this paper we present parallel implementations of some representative low level vision algorithms on a cluster of workstations. These include convolution operation and the image restoration algorithm using Markov random field models. The convolution operation has been parallelized using the Farmer-Worker paradigm, while the image restoration algorithm has been parallelized through the Master-Worker pattern. Parallel implementations of both these algorithms have shown promising results, where the observed speedups are reasonably close to the ideal speedups. The parallel convolution operation has shown good scalability with respect to the problem size and number of processors used in parallelization. The paper elaborates on different parallelization results of the convolution operation observed after varying the image size, mask size and processor load on individual workstations. The image restoration algorithm is communication intensive. However, as the computing time between successive communications at each worker process is relatively high, the actual speedups observed are very close to the ideal speedups in this algorithm. © 2008 IEEE.

关键词： Convolution

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iSCSI Simulation Study of Storage System

iSCSI Simulation Study of Storage System

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International Conference on Computer Modeling and Simulation, UKSIM

作者： Smita Vishwakarma Sankalp Bagaria Center for Development of Advanced Computing Computer Networks and Internet Engineering Kharghar India

Demands for more storage in the industry has increased beyond that the traditional storage mechanisms can supply and thus, the concept of Storage Area Networks (SANs) has evolved. This has resulted in the design of iSCSI (Internet SCSI) protocols that have SCSI commands and allow data transfer to take place over the network. Fiber channel protocol was the first such protocol that used Gigabit per second links to carry commands over long distances. The iSCSI Protocol maps the SCSI block oriented storage data over TCP/IP and enables storage devices to be accessed over standard Ethernet based TCP/IP networks, With the development of Gigabit Ethernet and the iSCSI protocol, reduction in costs and a uniform network infrastructure can be *** offers a flexible way to study the iSCSI – based storage systems. We wish to study a storage area network, which uses iSCSI Protocol to exchange data between its various nodes. This study will help us in understanding how iSCSI works in a storage area network. We have used ns2 for our simulation work. We have simulated an iSCSI initiator and an iSCSI target, which communicate through iSCSI. iSCSI lies upon TCP Protocol. R/W requests are made by the iSCSI initiator and data exchange takes place depending on these requests. The throughput is calculated and graph is plotted.

关键词： Access protocols TCPIP IP networks Ethernet networks Computer networks Storage area networks Computational modeling Computer simulation Optical fiber devices Costs

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Inconsistent Fail due to Limited Tester Timing Accuracy

Inconsistent Fail due to Limited Tester Timing Accuracy

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VLSI Test Symposium

作者： Intaik Park Donghwi Lee Erik Chmelar Edward J. McCluskey Center for Reliable Computing University of Stanford USA Advanced Development LSI Corporation USA

Delay testing is a technique to determine if a chip will function correctly at a specified frequency. If a chip passes delay tests, it will presumably function at the specified frequency in the field. This paper presents experimental results that show how chips can pass very thorough delay tests and still fail in the field. It is shown that some chips sometimes pass and sometimes fail when the same delay test is applied multiple times under the same test conditions. These chips are called inconsistent fails. This paper shows how tester timing edge placement accuracy can cause inconsistent fails and suggests the minimum requirements for guardbands that avoid the inconsistent test results.

关键词： Timing Accuracy Circuit testing Delay Logic testing Frequency Integrated circuit testing Flip-flops Voltage Temperature

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