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- 저자 : B.V.S Anusha (검색결과 2 건)
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윤성조(Soung-Jo Youn),B.V.S Anusha,김계영(Gye-Young Kim) 한국컴퓨터정보학회 2019 韓國컴퓨터情報學會論文誌 Vol.24 No.2
In this paper, we propose a technique to reconstruct the iris image from the iris code by analyzing the process of generating the iris code and calculating it inversely. Iris recognition is an authentication method for authenticating an individual"s identity by using iris information of an eye having unique information of an individual. The iris recognition extracts the features of the iris from the iris image, creates the iris code, and determines whether to authenticate using the corresponding code. The iris recognition method using the iris code is a method proposed by Daugman for the first time and is widely used as a representative method of iris recognition technology currently used commercially. In this paper, we restore the iris image with only the iris code, and test whether the reconstructed image and the original image can be recognized, and analyze restoration vulnerability of Daugman"s iris code.
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N. Bindushree,A. Dhabale,M. S. Dhanush,A. Honakeri,A. Ankit,M. K. Anusha,R. Kumar,H. K. Choudhary,V. Khopkar,K. Chandra Sekhar,B. Sahoo 대한금속·재료학회 2020 ELECTRONIC MATERIALS LETTERS Vol.16 No.6
We report the method of tuning the thermal conductivity through the composition of multiwall carbon nanotube (MWCNT)dispersed ethylene glycol based nanofluids. The structure and properties of the MWCNTs were characterized by scanningelectron microscopy, transmission electron microscopy, X-ray diffraction, Raman spectroscopy and thermogravimetric analysis. A parallel plate thermal conductivity (PPTC) set up was fabricated and used for measurement of thermal conductivityof the nanofluids. We have prepared ethylene glycol based nanofluids containing 0.05, 0.1, 0.15, 0.20, 0.25 and 0.35 wt%of MWCNTs. The thermal conductivities of these fluids were measured by keeping them between the two (parallel) plates,referred as the hot and the cold plates, of the sample holder in the PPTC apparatus. The lower plate was water-cooled andthe upper plate was heated. The temperature of the hot plate was varied between 35 and 80 °C. The thermal conductivityof the fluids was calculated using the one-dimensional heat conduction equation. According to our observation, an efficientheat transfer occurs through the nanofluids with an optimum concentration of 0.20 wt% of CNTs. Our work demonstrates the importance of the composition of the nanofluids and their structural defects in heat transfer.
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