• Biomedical Science Letters
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• v.7 no.3
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• pp.151-159
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• 2001

Many prospective studies have confirmed the predictive value of plasma fibrinogen levels for vascular diseases, including ischemic heart disease. Several polymorphisms of the $\beta$fibrinogen gene have been investigated in relation to plasma fibrinogen levels. The blood samples for DNA were collected from 109 healthy Koreans who have no relationship by blood (67 males and 42 females) in due consideration of some other factors such as gender, age, and smoking status. Four polymorphisms of the $\beta$fibrinogen gene that consist of HaeIII, AluI, MaII and BcII restriction fragment length polymorphisms (RFLPs) were investigated to examine the associations between RFLPs and plasma fibrinogen levels. In conclusion, the significant associations between HaeIII, AluI, MnII RFLPs(H$_1$H$_2$, M$_1$M$_2$, $A_1$A$_2$) and the concentration of plasma fibrinogen were shown by the smokers as well as by the old people more than 50, whereas the association between BcII and plasma fibrinogen were shown no connection with the status of age and smoking. The concentration of plasma fibrinogen was significantly shown higher by the old people ($\geqq$50) by the younger people ($\leqq$49) in male and also higher by the smokers than by the nonsmokers.

• Korean Journal of Microbiology
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• v.36 no.4
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• pp.249-253
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• 2000

The genetic diversity among Korean cyanobacteria was assessed by restriction fragment length polymorphism(RFLP) analysis of PCR products from the phycocyanin locus. Strains of all the genera tested were successfully amplified, and the size of amplified fragments was approximately 700bp. The restriction patterns generated by AluI, MspI, and HaeIII were conserved for strains within each of genera studied and were specific to the genus level. Intrageneric delineation of strains was revealed by the enzyme, CfoI for members of genera Anabeana and Synechocystis. Phenogram derived from the different RFLP patterns revealed a coherent cluster among Anabeana, Chlorogloea, and Synechocystis strains. PC-RFLP methods provided useful tools for classification of cyanobacteria.

• Korean Journal of Plant Resources
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• v.28 no.2
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• pp.279-289
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• 2015

Genetic diversity and genetic differentiation of thirteen Pinus densiflora populations in South Korea were estimated using nine ESTP (Expressed Sequence Tag Polymorphism) markers. The numbers of allele and the effective allele were 2.2 and 1.8, respectively. The percentage of polymorphic loci (P) was 98.8%. The observed and the expected heterozygosity were 0.391 and 0.402, respectively, and the eleven populations except for Ahngang and Gangneung population were under Hardy-Weinberg equilibrium state. The level of genetic differentiation (Wright’s F_ST = 0.057) was higher than those of isozyme or nSSR markers. We could not find out any relationship between the genetic distance and geographic distribution among populations from cluster analysis. Also, the genetic differentiation between populations was not correlated with the geographic distance (r = 0.017 and P = 0.344 from Mantel test). From the result of F_ST-outlier analysis to identify a locus under selection, six loci were detected at confidence interval of 99% by the frequentist’s method. However, only three loci (sams2+AluⅠ, sams2+RsaⅠ, PtNCS_p14A9+HaeⅢ) were presumed as outliers by Bayesian method. The sams2+AluⅠ and sams2+RsaⅠlocus were originated from the sams2 gene and seemed to be the loci under balancing selection.

• Proceedings of the Korean Information Science Society Conference
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• 1998.10a
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• pp.694-696
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• 1998

ILP마이크로세서를 위한 스테쥴링 과정에서 메모리 명령어가 프로그램의 임계 경로로에 존재할 경우에 이의 스케쥴링은 성능 향상에 중요한 문제 중에 하나이다. 메모리 명령어의 원활한 코드 이동을 위해서는 장애가 되는 명령어들의 메모리 주소간의 의존성의 분석을 필요로 한다. 본 논문에서는 컴파일 시간에 메모리 주소간의 의존성 분석을 통한 성능 향상도를 VLIW환경 하에서 비교한다. 실험결과. 컴파일 시간에 메모리 주소 모호성 제거기를 사용한 경우 16ALU프로세서에서 정수 벤치마크 프로그램에 대해서 기하 평균으로 약 3.6%의 성능 향상이 가능하다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2012.05a
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• pp.504-505
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• 2012

This paper represent a method of efficiency multimedia processor. Also in case of application fields, we propose the water marking area. It is a insert the authorized information method, namely watermark, according the a little change data in area which human can not cognitive visible or acoustic.

• Superconductivity and Cryogenics
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• v.6 no.2
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• pp.30-35
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• 2004

정보통신 기술이 발전하게 됨에 따라 빠른 시간 내에 다량의 점보를 처리해야 하기 때문에 전자산업 분야는 앞으로 점점 더 고속으로 작동하는 전자소자를 요구하게 될 것이다. 이에 따라 반도체 소자의 고속화 연구가 현재 많이 진행되고 있으나, 반도체 소자를 고속화할 경우 나노 구조의 선폭으로 제작하는 일이 기술적으로도 어려운 일이겠으나, 나노 구조의 제작 기술이 가능하다 해도 소비 전력 면에서 한계가 있기 때문에 10 GHz 이상의 획기적인 속도의 상승은 용이하지 않을 것으로 전망되고 있다.(중략)

• Journal of information and communication convergence engineering
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• v.6 no.3
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• pp.285-288
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• 2008

Most of multimedia processors for 2D/3D graphics acceleration use a lot of integer/floating point arithmetic units. We present a new architecture with an efficient ALU, built in a smaller chip size. It reduces instruction cycles significantly based on a foundation of multi-thread operation, variable length instruction words, dual phase operation, and phase instruction's coordination. We can decrease the number of instruction cycles up to 50%, and can achieve twice better performance.

• Proceedings of the IEEK Conference
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• 1998.06a
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• pp.843-846
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• 1998

산술연산을 수행하는 가산기는 ALU(arithmetic logic unit)의 성능을 좌우하는데 매우 중요한 역할을 하며, 어떠한 캐리 생성 방식을 사용하는냐에 따라 그 성능이 결정될 수 있다. RCA(Ripple carry adder)는 간단하고, 쉬운 설게로 널리 사용되자만, 캐리의 전파지연 문제로 인해 고속의 가산기 응용에의 부적합하다. 또한, CLA(carry lookahead adder)방식의 가산기는 캐리의 지연시간이 가산기의 단수와 무관하므로, 연산속도를 높일 수 있는 장점이 있지만 더하고자 하는 bit의 수가 클수록 회로가 매우 복잡해지는 큰 단점을 가지고 있다. 따라서, 본 논문에서는 간단하면서도 성능이 우수한 64bit 가산기를 설계하고 시뮬레이션을 통하여 설계된 회로의 우수성을 증명하였다.

• Proceedings of the IEEK Conference
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• 1999.11a
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• pp.931-934
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• 1999

For applications in multimedia to which genuine RISC microprocessors are not suitably applicable, a new generation of fast and flexible microprocessors is required. In this paper, as a technique of integrating DSP functionality in a general RISC processor, a RISC that can execute DSP extension instructions is developed to improve the performance of multimedia application execution. This processor can execute DSP instructions in parallel with the execution of ALU instructions for efficient and fast execution. In addition, the execution ability of integer instructions is improved by enhancing the RISC core itself.

• 한국초전도학회:학술대회논문집
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• v.14
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• pp.55-55
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• 2004