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- 저자 : 김명수(KIM, Myung Soo) (검색결과 1,547 건)
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김명수,이창용,김태진,이정호,김중훈,Kim, Myoung-Su,Lee, Chang-Yong,Kim, Tae-Jin,Lee, Jung-Ho,Kim, Joong-Hoon 한국방재학회 2006 한국방재학회논문집 Vol.6 No.2
본 연구의 목적은 유전자 알고리즘(Genetic Algorithm), 음정탐색법(Harmony Search)과 같은 발견적 방법과 동적계획법과 같은 최적화 기법들이 분기형 우수관망시스템의 최적비용 설계법에 적용됨에 있어 효율성을 비교하는데 있다. 이 목적에 맞추어 본 연구에서는 두 개의 우수관거 설계모형을 개발하였다.. 하나는 SEWERGA이고 다른 하나는 SEWERHS로서 각각의 모형은 결정변수로 최적의 파이프 매설깊이를 채택하였다. 이 두 모형은 유량과 유속의 제약조건을 만족시키는 가운데 파이프의 적절한 매설깊이에 따른 최적관경도 결정한다. 이 두 모델을 1975년 동적계획법(Dynamic Programming)을 이용하여 Mays와 Yen에 의해 계산된 예제에 적용하였다. SEWERGA와 SEWERHS에 의해 계산된 결과는 동적계획법에 의한 연구결과보다 약 4%의 비용 절감 효과가 있는 것으로 나타났다. The objective of this research is to develop a least cost system design method for branched storm sewer systems while satisfying all the design constraints using heuristic techniques such as genetic algorithm and harmony search. Two sewer system models have been developed in this study. The SEWERGA and SEWERHS both determine the optimal discrete pipe installation depths as decision variables. Two models also determine the optimal diameter of sewer pipes using the discrete installation depths of the pipes while satisfying the discharge and velocity requirement constraints at each pipe. Two models are applied to the example that was originally solved by Mays and Yen (1975) using their dynamic programming(DP). The optimal costs obtained from SEWERGA and SEWERHS are about 4% lower than that of the DP approach.
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김명수,홍경희,Kim, Myoung-Su,Hong, Kyung-Hi 대한인간공학회 2005 大韓人間工學會誌 Vol.24 No.2
To understand the basic relationship between 3D curved surface model and 2D pattern, simplified torso model was generated by commercial CAD program (IDEAS). 3D torso model was then divided into different blocks and unfolded into a flat pattern as in ordinary works of clothing item design. As results, 2D pattern development of different part of 3D torso model was attempted and analyzed mathematically. It was found that different height, radius and tangent slope of 3D blocks resulted in different 2D pattern. The relationships between the shape parameters of 3D torso blocks and those of 2D patterns were analyzed using regression equations. Direct way of drawing a 2D pattern of corresponding 3D torso block was also illustrated for the convenience of pattern making using conventional measurements of upper/ lower radii and height of 3D torso block.
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중환자실 간호사의 고위험약물에 대한 투약오류 위험과 약물단독확인 태도, 투약안전간호활동 간의 상관성
김명수,정현경,Kim, Myoung Soo,Jung, Hyun Kyeong 한국중환자간호학회 2015 중환자간호학회지 Vol.8 No.1
This study was conducted to examine the relationship among the error risk of high-alert medication, attitudes to single-person checking of medication, and medication safety activities. The participants were 60 nurses working in the intensive care unit. Data were analyzed using descriptive analysis, t-test, analysis of variance, and Pearson's correlation coefficient. The mean scores of the knowledge and certainty of high-alert medication were $0.71{\pm}0.11$ and $2.74{\pm}0.59$, respectively. The mean score of the error risk of high-alert medication was $1.63{\pm}0.24$ and that of attitudes to single checking medication was $3.32{\pm}0.49$. The error risk of high-alert medication had a positive correlation with nurses' attitudes to single checking medication (r = .258, p = .047), which is correlated with the scores for certainty of knowledge (r = .284, p = .028). Based on the results of this study, continuing education for high-alert medication and the development of an accurate protocol for single checking medication are needed to improve the stability of high-alert medication.
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초전도자석 시스템 응용을 위한 멀티-컨텍 커넥터의 열 발생 특성 평가
김명수,최연석,김동락,이윤아,Kim, M.S.,Choi, Y.S.,Kim, D.L.,Lee, Y.A. 한국초전도학회 2012 Progress in superconductivity Vol.14 No.2
Current leads are one of the important components for carrying the current to the coil in the superconducting magnet system. Heat leakage through the current lead is the major factor of entire heat load in the cryogenic system because current leads carry the current from room temperature to near 4 K, connecting thermally each other. Therefore, minimization heat load through current lead can reduce the operating temperature of superconducting magnet. The semi-retractable current lead, composed of multi-contact connector and HTS element, is one of good options. Comprehension of Multi-contact connector's structure, contact resistance and heat generation is essential for estimating heat generation in current leads. Multi-contact connector has several louvers inside of socket and the shape, number, size of louvers are different with the size of connector. Therefore contact area, current path and contact resistance are also different. In this study, the contact resistance in multi-contact connector is measured using the electrical power as a function of connector's size and temperature. Also, the unique correlation of electrical contact resistance is derived and heat generation is estimated for superconducting magnet application.
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동북아시아의 세력균형과 군사력 수준 변화 연구: 세력균형이론에 기초한 2030년경의 동북아시아 안보환경 전망
김명수,Kim, Myung-soo 한국해양전략연구소 2021 해양안보 Vol.3 No.1
This study examines the distribution of power in Northeast Asia based on the balance of power theory, a representative theory of realism, assuming military capabilities as the core power of states. The results of previous studies on the balance of power and military forces are reviewed and used to analyze changes in the strength of the US, China, Russia, Japan, South Korea, and North Korea through 2020 to predict the security environment in 2030. In the balance of power theory, if the balance of power between a nation or a group of powers collapses, the possibility of war is high, and to survive in the international community with high uncertainty and distrust, the theory predicts that states must increase their powers in a self-help world and strengthen cooperation and alliance. Countries in Northeast Asia are also continuing to strengthen their military capabilities, and countries neighboring China are paying keen attention and remaining vigilant due to the rapid changes in the international security environment after the rapid rise of China. To mark the future 100th anniversary of the Chinese armed forces in the 2030s, China aims to realize 'defense and military modernization' and build a 'world-class military force' by the nation's 100th anniversary in the 2050s. The US is busy checking China's rise by strengthening international cooperation and alliances. The security environment and power dynamics in Northeast Asia are slowly changing as the US and China continue to compete for global hegemony. The changes and implications of the distribution of power in Northeast Asia after 2030 are examined based on the balance of power theory. 본 연구는 현실주의의 대표적 이론인 세력균형이론을 기초로 군사력을 국가의 핵심 힘으로 전제하여 동북아시아의 힘의 분포를 살펴본다. 이전 세력균형과 군사력 수준에 관한 연구결과를 고찰하고, 그 연구한 결과를 활용하여 2020년까지 미국, 중국, 러시아, 일본, 한국과 북한의 힘의 변화를 분석하여 2030년경 안보환경을 전망하여 본다. 세력균형이론에서 국가(nation)나 국가군(a group of power) 간에 힘의 균형이 무너지면 전쟁 가능성이 높고, 그 불확실성과 불신이 높은 국제사회에서 생존과 안전을 확보하기 위하여 국가는 힘의 증강(자조, self-help)과 더불어 협력(cooperation)과 동맹(alliance)을 더욱 강화하는 행동을 한다고 본다. 동북아시아의 국가들도 자국의 군사력을 지속 증강하고 있으며, 특히 중국의 급속한 부상으로 국제 안보환경의 급격한 변화에 주변 국가들은 촉각을 세우고 경계심을 늦추지 않고 있다. 중국은 2030년대 중국 창군 100주년과 더불어 '국방 및 군현대화'를 실현하고, 2050년대 건국 100주년에 '세계일류군대건설'을 목표로 하고 있다. 그리고 미국은 국제사회의 협력과 동맹 강화 등 중국 견제에 분주하다. 미국과 중국이 패권경쟁이 진행되고 있는 상황에서 동북아시아의 안보환경과 힘의 역학관계도 서서히 변하고 있다. 세력균형이론에 기초하여 2030년 이후 동북아시아의 힘의 분포 변화와 함의를 살펴보고자 한다.
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