• 전기전자학회논문지
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• 제19권4호
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• pp.596-602
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• 2015

본 논문에서는 HEVC와 VP9 겸용의 통합 역변환기를 설계하였다. 제안하는 아키텍처는 $4{\times}4$부터 $32{\times}32$ 크기의 HEVC IDCT, $4{\times}4$ 크기의 HEVC IDST, $4{\times}4$부터 $32{\times}32$ 크기의 VP9 IDCT, $4{\times}4$부터 $16{\times}16$ 크기의 VP9 IADST, $4{\times}4$ 크기의 IWHT까지 모든 모드의 계수 변환을 통합 역변환기에서 처리가 가능하다. HEVC와 VP9의 IDCT는 계수의 스케일만 다를 뿐 동일한 연산을 사용하며, HEVC의 $4{\times}4$ IDST와 VP9 $4{\times}4$ IADST 또한 계수의 스케일만 다를 뿐 동일한 연산을 사용한다. 더욱이 HEVC IDCT, VP9 IDCT, VP9 IADST 또한 상위 수준 IDCT의 서브셋이다. 제안하는 아키텍처는 연산이 같은 경우 곱셈기를 재사용하고 계수가 다를 경우에도 덧셈기 및 버터플라이 구조등을 최대한 공유함으로써 하드웨어의 크기를 크게 줄였다. 0.18 um 공정에서 합성했을 때 게이트 수가 456,442 게이트로 기존 아키텍처 대비 22.6% 감소하였다.

• Journal of Life Science
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• 제9권2호
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• pp.72-75
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• 1999

Using RT-PCR, a cDNA encoding tomato (Lycopersicon esculentum) ACC oxidase has partially been cloned, sequenced and identified. The nucleotide suquence of the clone was in the coding region and shared about 80% of homology iwht the other ACC oxidase genes of tomato, and 70∼84% with those of other plants such as Oryza sativa, Nicotiana tabacum and Helianthus annuus. In the wounded tomato leaves, this nucleotide transcripts were accumulated rapidly and declined slowly thereafter. These results suggested that the predicted clone might be another member of tomato ACC oxidase gene family.

• 한국국방경영분석학회지
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• 제26권2호
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• pp.55-74
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• 2000

A knowledge-based with production rules is a representation of static knowledge of an expert. On the other hand, a real system such as the stock market is dynamic in nature. Therefore we need a method to reflect the dynamic nature of a system when we make inferences with a knowledge-based system. This paper suggests a strategy of dynamic inference that can be used to take into account the dynamic behavior of decision-making with the knowledge-based system consisted of fuzzy production rules. A degree of match(DM) between actual input information and a condition of a rule is represented by a value [0,1]. Weights of relative importance of attributes in a rule are obtained by the AHP(Analytic Hierarchy Process) method. Then these weights are applied as exponents for the DM, and the DMs in a rule are combined, with the Min operator, into a single DM for the rule. In this way, the importance of attributes of a rule, which can be changed from time to time, can be reflected in an inference with fuzzy production systems.

• Preventive Nutrition and Food Science
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• 제3권2호
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• pp.123-127
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• 1998

Fixed-bed adsorption was adapted to separate phenolic acids from diluted phenolic solution. Break-through curve was obtained by nonlinear curve fitting method, and breakpoint, saturation time, and mass transfer coeffi-cient were calculated . Break point and saturation time were reached slower with $\rho$-coumaric acid than ferulic acid .The p-coumaric acid, having small molecular weight, is suposedly traveled longer pathway in characoal than ferulic acid. Fixed-bed adsorption iwht gallic acid having more hydroxyl functional group than other phenolic acids showed break point arrival and the largest saturation time. This fact means that there was bigger electrostatic affinity between gallic acid and charcoal than between other phenolic acids and charcoal.

• 한국통신학회논문지
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• 제23권4호
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• pp.901-913
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• 1998

본 논문에서는 CDMA 셀룰러 망에서 셀 간의 간섭이 불균일한 경우에 역방향 링크에서의 간섭을 계산하기 위한 새로운 해석 방법을 제시한다, 특히, 제안된 방식에서는 역방향 링크 전력 제어의 동적 특성을 반영함으로써 셀 간의 불균일한 통화량이 시스템 용량에 미치는 영향을 정확하게 정량화할 수 있으며, 셰도잉과 소프트 핸드 오프에 따른 영향을 고려한 분석이 가능하다. 이와 같이 셀 간의 불균일한 통화량을 고려한 상황에서 역방향 링크 전력 제어의 동적 특성을 반영한 간섭 계산 방식은 기존 연구에서 제시되지 않은 부분이다. 제안된 방식으로 계산된 결과를 살펴보면, 인접한 모든 셀들의 통화량이 두배가 될 때 계산된 가입자 수는 전력 제어의 동적 특성을 고려하지 않고 계산된 결과에 비해 27%까지 감소하는 것을 알 수 있다.

• Journal of Life Science
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• 제10권1호
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• pp.57-63
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• 2000

${\beta}$-catenin, which plays a critical role in both the cytoskeleton and in transcriptional regulation in variousadherent cell types, undergoes degradation during adherent cell apoptosis. Although ${\beta}$-catenin has been reported to be present in Jurkat T-acute lymphoblastic leukemia cells, the regulation of ${\beta}$-catenin in hematologic malignancies have not been examined. The data presented here demonstrate that treatment of the T cell leukemia Jurkat iwht the apoptosis inducer anti-Fas induced proteolytic cleavage of ${\beta}$-catenin. ${\beta}$-catenin was cleaved at both the N- and C-terminus after anti-Fas treatment. Cleavage of intact ${\beta}$-catenin was completely inhibited by caspase selective protease inhibitors. These data demonstrate that ${\beta}$ -catenin proteolysis is triggered by the cross-linking of the Fas receptor on Jurkat cells and subsequent activation of caspase protease. There was a clear accumulatio of the large proteolytic fragment in Jurkat cells treated with lactacystin of ALLM. These are potent inhibitors of proteasome and calpain. these results suggest that both the proteasome and clapain may recognize the large ${\beta}$-catenin fragment as a substrate fot further degradation and that these pathewasy may act downstream of scapase in response to Fas receptor activation. Therefore, we suggest that ${\beta}$-catenin may play a role in promoting Jurkat survival.