• 제목/요약/키워드: Lucifer

검색결과 19건 처리시간 0.021초

Lucifer 형태의 암호화 알고리듬에 관한 연구 (A Study on Lucifer-Type Encryption Algorithm)

  • 강해동;이창순;문상재
    • 대한전자공학회논문지
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    • 제26권3호
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    • pp.32-39
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    • 1989
  • 본 논문에서는 Lucifer의 카이바이트 사용스케줄과 펼쳐진 콘볼루션 레지스터를 변화시키면서 32, 64, 그리고 256비트 블록크기 Lucifer형태의 암호화 알고리듬을 제시하고 이들의 심볼간 상호의존도와 exhaustive 암호 분석의 비도를 비교 조사한다. 또 키이 interruption 위치 변경과 autoclave방식의 대체상자 입력 등의 심볼간 상호의존도를 개선하는 방법들도 제시한다.

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Distribution and Abundance of Planktonic Shrimps in the Southern Sea of Korea during 1987-1991

  • Park, Won-Gyu;Ma, Chae-Woo;Hong, Sung-Yun;Lee, Ki-Won
    • Fisheries and Aquatic Sciences
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    • 제12권3호
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    • pp.240-248
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    • 2009
  • Distribution and abundance of planktonic shrimps were studied in the southern sea of Korea from 1987 to 1991. Nine species of five genera belonging to three families were identified. Of these, Leptochela sydniensis and Lucifer intermedius were predominant species and Lucifer penicilifer and Lucifer typus were common species. Remaining five species, Acetes chinensis, Leptochela gracilis, Lucifer chacei, Process wheeleri and Sergestes similis occurred sporadically and rarely. The distribution pattern of planktonic shrimps varied with species and sampling periods. L. intermedius occurred abundantly along inshore waters. L. penicilifer and L. typus appeared in both inshore and offshore waters, but more abundantly in offshore waters under influence of the Tsushima Current. In conclusion, the distribution patterns of planktonic shrimps may be related with hydrographic characteristics and seasonality in the southern sea of Korea.

LUCIFER 형태의 암호화 알고리즘에 관한 연구 (A Study on Lucifer-type Encryption Algorithm)

  • 강해동;이창순;문상재
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1988년도 전기.전자공학 학술대회 논문집
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    • pp.190-193
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    • 1988
  • Lucifer - type algorithms with variable length of block size are presented. They are investigated and compared in the viewpoint of the intersymbol dependence. The results show that the S-box and the number of rounds are very important factors in achieving the complete dependence.

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Effects of Setaria italica on Gap Junction-Mediated Intercellular Communication for the Development of Cancer Chemopreventive Agents

  • Son, Jang-Won;Fang, Ming-Zhu;Cho, Myung-Haing;Kim, Kyung-Ho;Kim, Soo-Un;An, Gil-Hwan;Lee, Chong-Soon;Kim, Ki-Nam;Chang, Il-Moo;Mar, Woong-Chon
    • Natural Product Sciences
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    • 제5권2호
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    • pp.88-92
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    • 1999
  • Inhibition of gap junction-mediated intercellular communication (GJIC) has been considered as an important factor in the tumor promotion phase of carcinogenesis. Recovery effects of natural products on gap junctional intercellular communication are measured by scrape-loading and dye transfer method using Lucifer yellow after administration of phorbol-12-myristate-13-acetate (PMA) on WBF344 cells. Among tested natural products, the hexane fraction and subfractions (F-01 and F-04) of Setaria italica were relatively effective for recovery of GJIC. The hexane fraction of Setaria italica $(EC_{25},\;12.14\;{\mu}g/ml)$ and subfractions $(F-01:EC_{50},\;10.74\;{\mu}g/ml;EC_{25},\;1.58\;{\mu}g/ml,\;F-04:EC_{50},\;11.03\;{\mu}g/ml;\;EC_{25},\;3.12\;{\mu}g/ml)$ revealed dose-dependent recovery effects on GJIC. Our data show GJIC activity measurement by Lucifer yellow spread on cells can be an effective tool for the screening of natural products with possible cancer chemopreventive effects.

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북태평양 중부 해산어장에 있어서 저층 선주낙의 어획실태 (Fishing investigation of vertical bottom longline fisheries in sea mount of central northern Pacific)

  • 오택윤;김영승;조삼광;김인옥;최석관;고정락;양원석
    • 수산해양기술연구
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    • 제41권3호
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    • pp.188-198
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    • 2005
  • This study was conducted to survey the catches of vertical bottom longline fisheries in the sea mount of central northern Pacific($30^{\circ}-42^{\circ}N$, $170^{\circ}-175^{\circ}E$), during the period of July 1 to August 25,2004 by commercial fishing vessel. The number of 57 test fishing was carried out in the central northern Pacific during 43 days and the total catches were 21,092.4kg as 19 fish species, CPUE/day and catches/day were 185 baskets and 490.5kg, respectively. Main fish species caught from the experimental fishing were Squalus mitsukurii (66.3%), Coelorhyrchus asperocephaius (11.7%) and Helicolenus avius (9.8%) and, average inside diameter for fish mouth was 4.0cm over. Catch ratio according to each fishing ground was the order of F, D, J, B and C. Catch ratio fur water depth was the order of 450-500m, 350-400m, 300-350m, 400-450m, 1000-1100m and 500-550m and, main species by water depth was Squalus mitsukurii for 300-400m, Etmopterus lucifer for 300-550m, Coelorhyrchus asperocephaius far 1,000m over. Catch ratio according to the kind of hooks was higher at the hook no.6 for Squalus mitsukurii and no. 5 for Etmopterus lucifer and, catch ratio by baits was higher at squid for Squalus mitsukurii, saury and eel for Helicolemus avius and saury for Etmopterus lucifer. Accordingly, it is thought that the extension of fishing hours is needed with the reduction of damage and loss for fishing gears during fishing operation.

퍼스널 컴퓨터용 관용 암호화 시스템의 구현 (Hardware implementation of a conventional cryptosystem for personal computers)

  • 강성기;이진수;이상곤;문상재
    • 한국정보보호학회:학술대회논문집
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    • 한국정보보호학회 1991년도 학술발표논문집
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    • pp.176-184
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    • 1991
  • A realization of a conventional cryptosystem for personal computers using the DSP56001 digital signal processing chip is presented. An improved Lucifer-type algorithm is employed to encrypt, and executed in the DSP56001. The Diffie-Hellman method is employed to generate and distribute the key. The implemented hoard can be plugged in the I/O port of personal computers.

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데이타 보호용 모뎀 시스템 (A Secure Modem System)

  • 백기진;이창순;문상재
    • 한국정보보호학회:학술대회논문집
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    • 한국정보보호학회 1991년도 학술발표논문집
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    • pp.194-203
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    • 1991
  • This paper presents the hardware development of a secure modem system for personal computers. This system consists of a data encryption system and an existing modem. The algorithm of LUCIFER-type with block size of 64-bit is used for data encryption and Diffie-Hellman method is also employed for generation of the encryption key. We implement the system in hardware using the DSP56001.

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STUDIES OF CELL COMMUNICATION BY USING GAP JUNCTION CHANNELS RECONSTITUTE IN UNILAMELLAR LIPID VESICLES

  • Joe, Cheol-O
    • 한국생물물리학회:학술대회논문집
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    • 한국생물물리학회 1996년도 정기총회 및 학술발표회
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    • pp.6-6
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    • 1996
  • Gap junction channels were reconstituted into unilamellar liposomes using immunoaffinity purified connexin 32 gap junction protein from rat liver. Vesicles containing open channels and close channels were separated by means of iso-osmolar sucros density gradient sedimentation. The open channels formed in lipid vesicles were permeable to a fluorescent dye molecule, lucifer yellow of which the hydrodynamic size is similar to pore size of gap junctions in vivo. (omitted)

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육생 민달팽이 Incilaria fruhstorferi daiseninana의 내장신경과 관련이 있는 동정된 뉴우런에 관한 연구 (A study on the Inentified Neurons Related to the Visceral Nerve in the Terrestrial Slug, Incilaria fruhstorferi daiseninana.)

  • 김영규;장진
    • 한국동물학회지
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    • 제30권1호
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    • pp.29-43
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    • 1987
  • Incilaria fruhstorferi daiseninana의 뇌는 쌍을 이루고 있는 뇌(cerebral), 측(pleural), 노(parietal), 족(pedal)신경절과 단일 복부(abdominal)신경절로 구성되어 있으며, 이들은 융합된 신경고리를 이루고 있었다. 복부신경절로부터 나오는 내장신경은 생식, 장, 심장, 신장신경등으로 분지되어 이들 각 기관에 신경을 공급하고 있었다. 다음 3가지 방법, 즉, 내장신경을 Ni$^2$+로 역방향으로 충진하여 세포체를 염색하는 방법, 형광화합물 Lucifer yellow를 세포내로 주입하는 방법, 세포내활동전위와 내장신경의 세포외 활동전위를 동시에 측정하는 방법으로 적어도 12가지의 동정된 뉴우런이 내장신경과 관련되고 있음을 알았다. 알아낸 각 세포의 전기생리학적인 특성을 검지하고, 이것과 각 세포의 돌기 분지상태와의 관련 및 일부 세포간의 상호관계를 검사하였다. 이들중 8가지 세포가 내장신경에 축색돌기를 내보내는 효과신경세포라는 증거를 얻었다.

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