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Articles by A. Rajendran
Total Records ( 2 ) for A. Rajendran
  R. Manju , A. Shajin Nargunam and A. Rajendran
  In many real-world applications, Unimodal Biometric Systems often face significant limitations due to sensitivity to noise, intraclass variability, data quality, non-universality and other factors. Multibiometric Systems seek to alleviate some of these problems by providing multiple pieces of evidence of the same identity. This study presents an effective fusion scheme that combines information presented by multiple domain experts based on the Rank-Level Fusion Integration Method. The developed Multimodal Biometric System possesses a number of unique qualities, starting from utilizing principal component analysis and Fisher’s Linear Discriminant Methods for individual matchers (face, iris and fingerprint) identity authentication and utilizing the Novel Rank-Level Fusion Method in order to consolidate the results obtained from different biometric matchers.The results indicate that fusion of individual modalities can improve the overall performance of the Biometric System, even in the presence of low quality data.
  P. Kumarasamy , S. Vignesh , R. Arthur James , K. Muthukumar and A. Rajendran
  This study was aimed to estimate current levels of pollution indicator as well as many groups of human pathogenic bacteria and their seasonal variations in different locations of Cauvery river, South India. The samples were collected from 16 different sites along river from Stanley reservoir to estuary regions (Bay of Bengal). The microbiological scrutiny was performed during monsoon (2007), Winter, Summer and Spring (2008) seasons taken for the bacterial analysis of Total Viable Counts (TVC), Total Coliform counts (TC), Total Streptococci counts (TS) and also four different types of pathogenic bacterial load were counts, which are indicator organisms of pollution studies. Total viable counts were found in the range of 6.2-26.0 (x104) mL-1 in monsoon, 5.2-20.0 (x104) mL-1 in summer, 4.0-17.9 (x104) mL-1 in winter and 3.3-15.5 (x104) mL-1 in spring. The TC was found in the range of 4.1-21.0 (x103) mL-1, 3.6-17.0(x103) mL-1, 2.9-14.1 (x103) mL-1 and 2.3-12.0 (x103) mL-1, for TS, it was 4.3-18.0 (x102) mL-1, 3.2-13.0 (x102) mL-1, 2.6-11.0 (x102) mL-1 and 2.0-9.6 (x102) mL-1 during monsoon, summer, winter and spring, respectively. Counts of EC, SA/SH, SF and PA were in the range of 300-3700 mL-1, 20-280, 20-270 and 40-490 mL-1, respectively. The Cauvery river basin has been facing severe anthropogenic activities, mostly due to religious belief, dense population, municipal sewage and industrial waste confluences etc. A huge bacterial gene pool was obtained after this study which was indicative of immense bacterial diversity in the region.
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