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Search Results: 1 - 3 of 3 matches for " Sethupandian Prathaban "
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Echocardiographic evaluation and Medical management of mitral and tricuspid regurgitation in a spitz
Govindarajan Vijayakumar,Ayyanampakkam Pandurangan Nambi,Puzuthivakkam Subramaniam Thirunavukkarasu,Sethupandian Prathaban
Veterinary World , 2013, DOI: 10.5455/vetworld.2013.166-168
Abstract: [Vet World 2013; 6(3.000): 166-168]
A Reconfigurable Antenna-Based Solution for Stationary Device Authentication in Wireless Networks
Prathaban Mookiah,Kapil R. Dandekar
International Journal of Antennas and Propagation , 2012, DOI: 10.1155/2012/545783
Abstract: Applying channel information for user authentication is gaining attention in the area of wireless network security. Similarly, reconfigurable antennas capable of generating multiple decorrelated channel realizations have become increasingly popular in wireless systems. In this paper we propose and evaluate a channel-based authentication scheme that applies the capabilities of a pattern reconfigurable antenna for improved performance in user authentication. Field measurements of the channel frequency response employing such an antenna were performed to quantify the performance of the proposed scheme. Based on these measurements, we show the effect of correlation that exists between the different modes on the authentication performance. Furthermore, the performance gain that can be achieved by the scheme is studied as a function of the number of antenna modes. Offline mode analysis is performed to give a loose upper bound on performance while online mode analysis results are presented to quantify achievable authentication performance in realtime. A general guideline on how to choose the different elements of the decision metric in order to realize better performance for physical layer-based authentication schemes based on any diversity scheme is also developed.
SYSTEMS WITH EXTENDED AVAILABILITY AND SWITCHOVER DELAYS
V.S.S. Yadavalli,M.A. Shahul Hameed,L. Prathaban,K. Thaga
South African Journal of Industrial Engineering , 2012,
Abstract: ENGLISH ABSTRACT: A system with extended availability and switchover delays with a single repair facility is considered, with a random extended available period having a switching delay from online failure to the repair of the facility. Identifying suitable regeneration points, several operating characteristics, such as the moment generating function of the total uptime, mean, and mean square number of various events, are obtained, apart from reliability and availability functions. AFRIKAANSE OPSOMMING: 'n Stelsel met verlengde beskikbaarheid, oorskakelvertraging met 'n enkele herstelfasiliteit en 'n toevalverlengde beskikbaarheidsperiode met oorskakeling vanaf intydse mislukking tot herstel, word behandel. Deur geskikte regenerasiepunte te identifiseer, kan verskeie bedryfseienskappe (benewens betroubaarheid en beskikbaarheid) soos 'n momentgenerende funksie vir totale beskikbare tyd, gemiddelde en gemiddelde kwadraatwaardes vir verskeie gebeurtenisse, bepaal word.
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