• Title/Summary/Keyword: Jing

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COMPLETE MONOTONICITY OF A DIFFERENCE BETWEEN THE EXPONENTIAL AND TRIGAMMA FUNCTIONS

  • Qi, Feng;Zhang, Xiao-Jing
    • The Pure and Applied Mathematics
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    • v.21 no.2
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    • pp.141-145
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    • 2014
  • In the paper, by directly verifying an inequality which gives a lower bound for the first order modified Bessel function of the first kind, the authors supply a new proof for the complete monotonicity of a difference between the exponential function $e^{1/t}$ and the trigamma function ${\psi}^{\prime}(t)$ on (0, ${\infty}$).

Design and Implementation of A PC Protection Software using RFID (RFID를 이용한 PC 보안 소프트웨어의 설계 및 구현)

  • Jing, Byung-Wook;Oh, Myoung-Kwan;Lee, Keun-Wang
    • Proceedings of the KAIS Fall Conference
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    • 2009.05a
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    • pp.99-102
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    • 2009
  • 본 논문에서는 RFID를 이용하여 PC 보안 소프트웨어를 설계 및 구현을 하였다. 본 논문에서 연구한 PC 보안 소프트웨어는 송신기인 RFID Tag와 수신기인 RFID Reader에 연결된 안테나를 통해 서로 통신하여 PC에 설치된 S/W를 이용하여 사용자 인증을 받는 PC 보안 방법이다. 이는 위조 및 변조가 불가능하며, 스니핑 공격 및 스푸핑 공격에 대하여 기존의 PC 보안 시스템보다 안전성이 향상되었다.

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Birefringence effect of two directionally rubbed liquid crystal cells

  • Huang, Chi Yen;Huang, Yao Sheng;Tian, Jing Rui
    • 한국정보디스플레이학회:학술대회논문집
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    • 2005.07a
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    • pp.446-449
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    • 2005
  • The alignment property of liquid crystals on the two-easy axes substrate is investigated. The two-easy axes substrate frustrates the orientation of the LCs next to the substrate, and hence influences the birefringence of the LC cell. Experimental findings reveal that the ratio of the rubbing strengths in the different rubbing directions and the cell thickness substantially influence the birefringence of the LC cell. The surface anchoring energetic competition between the different rubbing directions contributes to the observed results.

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