• 정보처리학회논문지D
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• 제10D권2호
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• pp.261-266
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• 2003

단백질은 아미노산의 선형 중합체(linear polymer)로서 생체의 조직을 구성하고 각종 생화학 반응을 조절하는 역할을 하는 가장 중요한 생체 분자에 속한다. 이러한 단백질의 특성과 기능은 해당 단백질을 구성하는 아미노산의 서열에 의해 결정되기 때문에, 주어진 단백질의 서열을 알아내는 것은 단백질 기능 연구의 출발점이다. 본 논문은 기존의 생화학적 단백질 서열 결정 방법의 단점을 극복할 수 있는 데이터 마이닝 기반 단백질 서열 예측 기법을 제안한다. 복수개의 단백질 절단효소(protease)를 적용함으로써, 서로 중첩된 단백질 조각을 얻어내고, 각 조각의 질량 정보와 단백질 데이타베이스를 이용하여 후보 서열을 식별한다. 얻어진 후보 서열의 조립을 통해 전체 서열을 결정하기 위한, 다중 분할 그래프(multi-partite graph) 구축 및 경로 탐색 기법을 제안한다. 아울러, 대표적인 단백질 서열 데이타베이스인 SWISS-PROT을 이용한 실험을 통해 제안한 방법의 성능을 평가한다.

• Structural Engineering and Mechanics
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• 제22권6호
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• pp.665-683
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• 2006

The strength behaviors of Fiber Reinforced Plastics (FRP) Composites can be greatly influenced by the properties of constitutive materials, the laminate structures, and load conditions etc, accompanied by many uncertainty factors. So the reliability study on FRP is an important subject of research. Many achievements have been made in reliability studies based on the probability theory, but little has been done on the roles played by fuzzy variables. In this paper, a fuzzy reliability model for FRP laminates is established first, in which the loads are considered as random variables and the strengths as fuzzy variables. Then a numerical model is developed to assess the fuzzy reliability. The Monte Carlo simulation method is utilized to compute the reliability of laminas under the maximum stress criterion. In the second part of this paper, a generalized fuzzy reliability model (GFRM) is proposed. By virtue of the fact that there may exist a series of states between the failure state and the function state, a fuzzy assumption for the structure state together with the probabilistic assumption for strength parameters is adopted to construct the GFRM of composite materials. By defining a generalized limit state function, the problem is converted to the conventional reliability formula that enables the first-order reliability method (FORM) applicable in calculating the reliability index. Several examples are worked out to show the validity of the models and the efficiency of the methods proposed in this paper. The parameter sensitivity analysis shows that some of the mean values of the strength parameters have great influence on the laminated composites' reliability. The differences resulting from the application of different failure criteria and different fuzzy assumptions are also discussed. It is concluded that the GFRM is feasible to use, and can provide an effective and synthetic method to evaluate the reliability of a system with different types of uncertainty factors.

• 성인간호학회지
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• 제15권4호
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• pp.628-638
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• 2003

Purpose: The purpose of this study was to develope a evaluation tool of the quality of nursing care for aneurysmal subarachnoid hemorrhage patients at Hunt & Hess Grade I~III. Method: The data was gathered from April 15, 2002 to June 14, 2002. The tool proceeded in six steps according to Bloch's framework. Result: The results of this study are as follows: 1) The quality evaluation tool for neurosurgery ICU consisted of 25 standards and 138 criteria. The quality evaluation tool for ward consisted of 27 standards and 144 criteria.; 2) The content validities of the tools for neurosurgery ICU and ward were 0.96 and 0.98, respectively.; 3) The Pearson coefficients for evaluating the interrated reliability of the tools for neurosurgery ICU and ward were r=0.9106 (p<0.1) and r=0.8807 (p<0.1), respectively.; 4) The ranges of corrected item-total correlations for evaluating the construct validity of the tools for neurosurgery ICU and ward were 0.0279~0.9354 and 0.0174~0.9682, respectively.; And 5) The ranges of Cronbach's ${\alpha}$ reliabilities for evaluating the internal consistency reliability of the tools for neurosurgery ICU and ward were 0.6040~0.8554 and 0.6212~0.9584, respectively. Conclusion: The tools developed in this study seem useful in evaluating the quality of nursing care for aneurismal subarachnoid hemorrhage patients at Hunt & Hess Grade I-III.

• 대한전자공학회논문지SP
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• 제48권4호
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• pp.30-37
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• 2011

본 논문에서는 수신호 인식기에 쓰이기 위한 분별성 있는 손동작을 만드는 방법을 제안한다. 기존의 수화DB에서 손의 움직임을 분석하여 기본 동작이 되는 4가지의 모션 프리미티브를 선정하였으며, 선정된 모션 프리미티브를 조합하여 구별성 있는 '기본 손동작 집합'을 제작하였다. 제안하는 '기본 손동작 집합' 의 구별성을 증명하기 위하여 '기본 손동작 집합' 인식기를 만들고 인식결과를 확인하였다. 사용된 인식기는 hidden Markov model (HMM) 을 기반으로 제작되었다. 기본 손동작 인식 task에 대한 성능평가 결과 99.01%로써 각 모델 간에 높은 구별성을 보이는 것을 확인할 수 있었다.

• 한국철도학회논문집
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• 제14권3호
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• pp.256-261
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• 2011

최근 경부고속철도 자갈도상 구간의 일부에서 침하가 발생되고 이로 인하여 열차의 안전 및 운행속도와 승차감 저하라는 문제가 발생하였다. 따라서 이 문제를 해결하고 KTX 열차 운행을 정상화하기 위한 긴급대책이 요구된 적이 있었다. 본 논문에서는 이러한 현장의 요구에 대처하기 위해 철도노반 단층영상화 기법을 도입하게 되었다. 철도노반 단층영상화 기법은 철도노반의 지반강성을 단층영상의 형태로 가시화함으로써, 잠재적으로 과도한 침하를 유발할 수 있는 철도노반의 연약부위를 찾는데 있어서 현장기술자의 신속한 판단을 가능하게 하는 기법이다. 제안된 기법의 타당성과 적용성을 평가하기 위하여 실제 자갈도상 철도노반과 신설 철도노반 등 두 현장에 적용하여 보았고, SASW, PBT, DCP, FWD 시험결과와 비교하였다.

• Journal of the Korean Data and Information Science Society
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• 제24권3호
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• pp.453-464
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• 2013

본 연구는 빙상선수의 성취목표성향이 셀프리더십과 동기에 대한 기여도를 분석하기 위한목적으로 진행되었다. 연구목적에 따라 수집된 369명의 자료를 이용하여 성취목표성향과 셀프리더십 및 스포츠 동기의 관계를 분석하였다. 각 요인간의 관계는 SPSS 18.0과 AMOS 18.0을 이용한 공분산구조분석을 분석하였으며 다음과 같은 결과를 도출하였다. 첫째, 빙상선수의 성취목표성향은 셀프리더십에 정적영향을 미치는 것으로 나타났다. 둘째 성취목표성향은 스포츠 동기에 정적영향을 미치는 것으로 나타났다. 셋째, 셀프리더십과 스포츠 동기의 관계에서는 셀프리더십이 스포츠 동기에 정적영향을 미치는 것으로 나타났다. 이러한 결과는 빙상선수의 자기 주도적 성향에 성취목표성향의 역할이 큰 것으로 판단되며 나아가 목표설정을 통한 자기주도성향을 향상시키는 전략적 방법을 고려해야 할 것이다.

• 유통과학연구
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• 제14권12호
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• pp.89-97
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• 2016

Purpose - In the major global markets, such as US and China, consumer ethnocentrism has been strengtened and there is a growing need for related study. This research aims to investigate the effects of national pride and national attachment on consumer ethnocentrism, using a nationally representative dataset from 2013 Korean General Social Survey. Based on the reviews of literature in social and political sciences, two dimensions of national pride were considered: national society pride which is based on positive evaluations on the nation's democracy condition or social security system, and national achievement pride which is based on positive evaluations regarding the country's achievements in the areas of technology, art, sports, and so on. Research design, data, and methodology - The authors developed a structural model in which two types of national pride, national society and achievement pride, are proposed to affect national attachment, thus influencing consumer ethnocentrism. 1,294 surveys were used for empirical analysis. The hypotheses were tested by utilizing SPSS 22.0 and AMOS 21.0. The unidimensionality of each construct and the nomological validity were supported from the results of factor analyses and correlation analysis. Results - It was found that both national society pride and national achievement pride have significant and positive effects on national attachment. Consumers who show stronger pride on the social systems or the global achievements of Korea are more likely to remain being a citizen of the country and support the country even in wrong. Also, there was a significant and positive relationship between national attachment and consumer ethnocentrism. Korean consumers who have stronger attachment to Korea tend to express higher ethnocentrism to protect Korean labor market and to promote economic development of the country. Conclusions - The findings of this study showed that companies and government need to emphasize the country's advanced social environments or global competitiveness in technology, sports, art, and so on, to boost national attachment. With a deeper understanding on the relationships among national pride, national attachment, and consumer ethnocentrism, the authors expect that both local and foreign companies in Korea will be able to develop more effective marketing strategies and to achieve sustainable competitive advantage.

• 통상정보연구
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• 제10권2호
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• pp.325-348
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• 2008

The purpose of this study is to find out the relationship between job fitness, organizational justice(distributive, procedural, interactional), job satisfaction, organizational trust, organizational commitment, and voluntary turnover intention in private organization such as in small fire in Korea. To identify the these relationships, the secondary data or past studies that were related with job fitness, organizational justice, job satisfaction, organizational trust, organizational commitment, voluntary turnover intention was collected and theoretically arranged. I made the theoretical proposed model to explain these relationships between the constructs, identify the operational definitions and 18 hypotheses was established, there was executed the survey of 262 in employees. Using the collected data, previous performances to confirm the construct validity and internal consistency by EFA(Exploratory Factor Analysis); i.e. factor analysis by SPSS, reliability by cronbach's a, and by the CFA(Confirmative Factor Analysis) and structural equations modelling the proposed model was tested by LISREL v. 8.52. The research came to the conclusions as follows: First, three perceived justice had the positive effect to the job satisfaction empirically. Second, procedural justice in three perceived justice only had the positive effect to the organizational trust empirically. Third, distributive justice in three perceived justice only had the positive effect to the organizational commitment empirically. Forth, job fitness had the positive effect to the organizational commitment, organizational trust, job satisfaction empirically in perspective. Fifth, I found the relationship between job satisfaction and organizational commitment, between job satisfaction and organizational trust was positive, between organizational commitment and trust. Finally, job satisfaction, organizational trust had not the positive effect directly, but indirect effect via organizational commitment was identified in voluntary turnover intention by empirical test.

• 한국콘텐츠학회논문지
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• 제6권1호
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• pp.23-30
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• 2006

Temporal 데이터의 클러스터링 방법론 중의 하나로 모델기반 방법론이 있다. 이는 각 클러스터에 대하여 오토마타기반의 모델을 가정하는 것이다. 개별 모델을 추출하기 위해서는 먼저 전체 데이터에 대한 적합한 모델을 찾는 것이 필요하다. 전체에 대한 모델은 데이터집합에 대한 최적의 클러스터의 수를 결정함으로 개별 모델 구축의 준비를 완료한다. 본 연구에서는 클러스터 수를 결정하기 위한 기준인 베이지안 정보기준(BIC : Bayesian Information Criterion) 근사법의 활용도를 검증하고 데이터 크기와 BIC 값의 상관관계를 파악함으로 탐색 효율을 높이는 방안을 제안한다. 실험에서는 인위적 모델을 통하여 생성된 인공적인 여러 형태의 데이터집합을 활용하여 BIC근사 측도의 활용성에 대해 살펴보았다. 실험결과에서 보여주는 것처럼 BIC 근사 측도는 데이터의 크기가 비교적 클 경우에 올바른 파티션의 사이즈를 추정함을 확인하였다.

• Archives of Plastic Surgery
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• 제44권4호
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• pp.293-300
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• 2017

Background Simulation training is becoming an increasingly important component of skills acquisition in surgical specialties, including Plastic Surgery. Non-living simulation models have an established place in Plastic Surgical microsurgery training, and support the principles of replacement, reduction and refinement of animal use. A more sophisticated version of the basic chicken thigh microsurgery model has been developed to include dissection of a type 1-muscle flap and is described and validated here. Methods A step-by-step dissection guide on how to perform the chicken thigh adductor profundus free muscle flap is demonstrated. Forty trainees performed the novel simulation muscle flap on the last day of a 5-day microsurgery course. Pre- and post-course microvascular anastomosis assessment, along with micro dissection and end product (anastomosis lapse index) assessment, demonstrated skills acquisition. Results The average time to dissect the flap by novice trainees was $82{\pm}24$ minutes, by core trainees $90{\pm}24$ minutes, and by higher trainees $64{\pm}21$ minutes (P=0.013). There was a statistically significant difference in the time to complete the anastomosis between the three levels of training (P=0.001) and there was a significant decrease in the time taken to perform the anastomosis following course completion (P<0.001). Anastomosis lapse index scores improved for all cohorts with post-test average anastomosis lapse index score of $3{\pm}1.4$ (P<0.001). Conclusions The novel chicken thigh adductor profundus free muscle flap model demonstrates face and construct validity for the introduction of the principles of free tissue transfer. The low cost, constant, and reproducible anatomy makes this simulation model a recommended addition to any microsurgical training curriculum.