• Nuclear Engineering and Technology
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• v.14 no.4
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• pp.219-227
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• 1982

• Digital Contents
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• no.7 s.110
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• pp.68-71
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• 2002

• Journal of the Korea Society of Computer and Information
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• v.17 no.11
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• pp.141-148
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• 2012

The advance of technologies for human genome makes it possible that the analysis of association between genetic variants and diseases and the application of the results to predict risk or susceptibility to them. Many of those studies carried out in case-control study. For quantitative traits, statistical analysis methods are applied to find single nucleotide polymorphisms (SNP) relevant to the diseases and consider them one by one. In this study, we presented methods to select informative single nucleotide polymorphisms and predict risk for quantitative traits and compared their performance. We adopted two SNP selection methods: one considering single SNP only and the other of all possible pairs of SNPs.

• Journal of the Korean Data and Information Science Society
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• v.22 no.4
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• pp.661-669
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• 2011

By direct sequencing of 12 STS marker, we identified 10 polymorphic SNPs. As a result of genotype frequency analysis between 10 polymorphic SNPs and extreme population (n=20) for marbling score in Hanwoo (n=233), there was over 40 percent of frequency difference of HWSNP_1-1 and HWSNP_9-4 SNP. HWSNP_1-1 SNP was significantly associated with marbling score in large-scale population (n=233). Therefore we suggested that HWSNP_1-1 SNP can be useful as a positional candidate for beef quality for marker-assisted selection in Hanwoo.

• Journal of the Korean BIBLIA Society for library and Information Science
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• v.16 no.2
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• pp.177-201
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• 2005

The purpose of this research is to study the meanings and characteristics of qualitative research method in LIS. As the philosophy and epistemology of qualitative research are widely different from those of quantitative research, the meaning of validity and reliability must be interpreted in its ow9 structure and dimension. Essentially qualitative researchers seek to understand and interpret the world of others from their own viewpoints which basically tend to be subjective. Accordingly, qualitative researchers‘ understandings and interpretations are met with readers' subjectivity. By carefully analyzing the nature of qualitative research in LIS, I tried to point out some problems in terms of validity and reliability and practical strategies. Six problems issued in the qualitative research method are presented.

• School Mathematics
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• v.17 no.4
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• pp.571-591
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• 2015

Even though fractions make up one of the most important concepts in the domain of numbers in elementary math, it is difficult to teach or learn them due to their different quantity concepts and notation methods from natural numbers and their various concepts. The didactic transposition of fractions is thus important, and there is a need to examine the didactic concepts of fractions used in the South Korean textbooks for its research. This study compared elementary math textbooks among South Korea, Taiwan, and China and investigated differences in the instructional time and order of fraction concepts in the textbooks according to their didactic concepts and also differences in the instructional methods according to quantitative concepts.

• Journal of the Korean Society of Clothing and Textiles
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• v.22 no.7
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• pp.952-962
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• 1998

본 연구의 목적은 지난 20여 년간 발표되었던 복식사 연구 논문의 연구방법을 검토, 분석함으로서 복식 연구의 학문적 기초를 다지며, 아울러 미래의 복식 연구가 나아가야 할 바람직한 연구 방향을 모색하는데 있다. 본 연구를 위하여 1977년부터 1996년 사이 미국의 복식관련 학술지에 발표된 총 34편의 복식 연구논문을 수집하여, 각 논문의 연구방법과 주제, 사용된 자료, 다른 학문과의 연계성에 관한 내용을 분석하였다. 본 논문에서는 복식연구의 방법을 질적(Qualitative)연구방법으로 서술형(Narrative)과 해석형(Interpretive), 그리고 양적(Quantitative) 연구방법의 세 가지 유형으로 분류하여 분석하였다. 본 연구의 결과에 의하면, 복식학자들은 복식사가 갖는 다른 여러 학문영역과의 연계성(Interdis-ciplinary nature)으로 인하여, 광대한 연구주제에 따라, 각종 연구자료를 이용하여, 여러 학문적 관점에서, 다양한 연구 방법을 적용시켜 왔던 것을 알 수 있다. 적절한 연구방법의 선택은 각 논문에 따라 연구자의 의도, 주어진 연구주제, 가능한 모든 자료를 근거로 하여 결정되어야 하며, 하나의 논문 내에서도 각 부분에 적합한 여러 연구방법을 병행하여 사용함으로서 가장 효과적으로 연구의 목적을 달성할 수 있어야 한다.

• The Korean Journal of Zoology
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• v.33 no.2
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• pp.158-165
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• 1990

Proteolytic activity of calpain was found to increase as myoblast fusion proceeds. At 60 hr after cell seeding, lis activity reached to a maximal level and then slighdy decreased thereafter. Similarly, the protein level of calpain reached to a maximal level just proir to the initiation of fusion and remained elevated upon prolonged culture as analyzed by immunoblol using anti-calpain antiserum. These results suggest that the synthesis of calpain is regulated during myogenesis and its proteolytic activity may be related with the process of myoblasts fusion.

• 한국벤처창업학회:학술대회논문집
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• 2019.11a
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• pp.75-79
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• 2019

국내 창업 생태계는 최근 몇 년 사이에 양적으로 급속히 팽창하였다. 정부 또한 가장 시급한 문제로 일자리 창출을 꼽고 이에 대한 해결방안 중 하나로 창업지원을 대폭적으로 확대하며 중소기업에 대한 지원확대를 제시하고 있다. 이러한 배경 하에 창업의 양적 성장은 위에서 설명한 바와 같이 가시적으로 나타나고 있다. 하지만 창업기업의 양적확대라는 긍정적인 측면에도 불구하고 창업기업의 낮은 생존율은 개선의 시급함을 나타내고 있다. 국내 창업기업 10곳 중 7곳 이상이 창업 5년 이내에 폐업을 하고 있는 상황이다. 이와 같은 이유로 2015년부터 중소벤처기업부는 창업기업의 데스밸리(Death Valley) 극복 및 성과창출을 위해 창업 후 3년 이상 7년 이내 기업을 대상으로 자금 및 서비스를 지원하는 등 창업기업이 어려움을 극복하고 사업 지속 가능성을 높이기 위하여 다양한 노력을 하고 있다. 본 연구의 목적 역시 창업자가 사업을 진행하면서 겪는 어려움을 극복하는 요인과 사업지속의지가 어떠한 상관관계를 가지고 있는가를 조사하고 분석하는데 있다. 본 연구에서는 사업 어려움 극복영향 요인(창업자 역량, 지원시스템)이 사업지속의지에 미치는 영향에 관한 연구를 경영성과의 매개 역할과 사회적 지지의 조절 역할을 하는지를 중심으로 진행하였다. 따라서 본 연구에서는 창업자 역량과 지원시스템이 경영성과를 증진하고, 증진된 경영성과가 사업지속의지에 영향을 미칠 것이라는 인과적 경로를 검증하고자 한다. 사회적 지지를 조절변수로 설정하여 본 연구를 진행하였다.

• Asian Journal of Turfgrass Science
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• v.22 no.1
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• pp.85-100
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• 2008

Gray leaf spot (GLS) is a serious fungal disease caused by Pyricularia oryzae Cavara, recently reported on the important turf and forage species, perennial ryegrass (Lolium perenneL.). This fungus also causes rice blast, which is usually controlled by host resistance, but durability of resistance is a problem. Few instances of GLS resistance have been reported in perennial ryegrass. However, two major QTL for GLS resistance have been detected on linkage groups 3 and 6 in an Italian x perennial ryegrass mapping population. To confirm that those QTL are still detectable in the next generation and can function in a different genetic background, a resistant segregant from this population has been crossed with an unrelated susceptible perennial clone, to form a new mapping population segregating for GLS resistance. QTL analysis has been performed in the new population, using two different ryegrass field isolates and RAPD, RFLP, and SSR marker-based linkage maps for each parent. Results indicate the previously identified QTL on linkage group 3 is still significant in the new population, with LOD and percent of phenotypic variance explained ranging from 2.0 to 3.5 and 5% to 10%, respectively. Also two QTL were detected in the susceptible parent, with similar LOD and phenotypic variance explained. Although the linkage group 6 QTL was not detected, the major QTL on linkage group 3 appears to beconfirmed. These results will add to our understanding of the genetic architecture of GLS resistance in ryegrass, which will facilitate its use in perennial ryegrass breeding programs.