• Korea Trade Review
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• v.42 no.2
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• pp.97-116
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• 2017

This study aims to analyze Vietnam' international commerce policy which is affected Korean's customs policy and fta policy, oda policy to develop diverse commercial cooperation between Korea and Vietnam. commercial cooperation between the two nations accomplished various co-development in vertical specialization of international commerce. Vietnam has exerted intense efforts to ameliorate its commercial environment for becoming WTO member and attracting FDI as next China. Vietnam has become WTO member and Vietnam's system and law relating to international commmerce has been changed for global standard. Vietnam hope to become international commerce leader in ASEAN. so Korea should take diverse efficient measures to assist Vietnam's continuous industrial development and advanced system in international commerce. the two nations should more mutually assist in mega international commerce round negotiation to intensify the two nation's international commerce policy in the international commerce system.

• Korean Journal of Social Welfare
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• v.63 no.1
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• pp.29-55
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• 2011

This study aims to understand the experiences of rights-based social work practice in a residential facility for people with intellectual disabilities. A representative residential facility practicing a human rights perspective was selected by recommendation of professional groups. Using a qualitative case study method, data was collected and analysed. In detail, it explores the experiences of rights-based social work practice at both organizational and individual levels respectively, and then discusses ethical dilemmas that arise from workers in the process of rights-based social work practice. According to results at the organizational level, rights-based social work practice of the residential facility began from workers' interests in needs of users with intellectual disabilities. Some trials to apply human rights in social work practice resulted in regulations for people with intellectual disabilities and stepped up organizational culture on human rights perspectives. And, at the individual level, self determination and choice of users with intellectual disabilities were stressed among various forms of human rights. As the results of rights-based social work practice, it appeared to be improved for the participation of the users, workers' human rights sensitivity, and qualities of rights-based activities. However, ethical dilemmas still existed. Hence, rights-based social work practice should understand a process of dynamic interaction between users and workers, which require workers to endeavor continuously. This study is significant in that it explored rights-based social work practice, focusing on field experiences for the first time in Korea, and suggested practical tasks to settle it down in the future.

• The Korean Journal of Financial Studies
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• v.9 no.1
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• pp.69-93
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• 2003

본 연구는 자사주매입에 대한 공시가 기업가치에 어떠한 영향을 미칠것이며 공시일 전후 주가반응이 자사주매입 한도 변경에 따라 시장에서 어떻게 반응할 것인지 그리고 아직 학계에서 다루어지지 않은 미시적인 관점에서 실제 자사주매입 비율에 영향을 미치는 요인이 무엇인지에 관해 실증분석을 실시하였다. 실증분석 결과 자사주매입 공시일 전후 유의적인 양(+)의 비정상초과수익률을 나타내었으며, 한도확대 이후 누적비정상수익률은 유의적으로 증가하였다. 목표매입비율이 클수록 유의적으로 누적비정상수익률은 증가하는 것으로 나타나고 있어 자사주 취득에 대한 저평가 가설을 지지하는 것으로 해석된다. 예기치 않은 현금흐름은 대체로 누적비정상수익률과 양(+)의 유의적인 관계를 보여 예기치 않은 현금흐름이 많은 기업일수록 자사주매입의 정보효과가 크게 나타나 Stephens & Weisbach(1998)의 결과와 일치하였다. 또한, 자사주매입 이후 1개월의 성과를 나타내는 누적비정상수익률은 실제 자사주매입 비율과 유의적인 부(-)의 관계를 보여 공시 이후 주가가 상승할수록 목표대비 실제 자사주매입액은 감소하여 경영자가 공시 이후 주가변화추이에 따라 자사주매입 수량을 조정하고 있는 것으로 파악되었다.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2010.06a
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• pp.32-39
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• 2010

수도권의 도시화 과정은 서울로의 교통 접근성의 변화에 따라 급속하게 확산되었고, 현재도 진행 중이다. 도시화 과정 속에 인구 교외화, 주택 수의 증가, 도심용지 토지이용 증대, 토지가격의 증가 등의 다양한 공간적 변화가 이루어지고 있다. 이러한 급속한 도시화의 과정 속에 국토의 난개발이 이루어졌고 자연생태 파괴, 주택부족 및 교통 문제, 토지 투기 등의 사회적 문제를 야기했다. 본 연구에서는 도시화 현황을 살펴보고 교통접근성의 변화에 따른 주변 토지이용 변화의 상관성을 분석하였다 상관성 분석 결과를 토대로 멀티 에이전트 시스템(MAS)을 이용하여 교통접근성과 토지이용 에이전트 간 상호작용의 관점에서 시뮬레이션 하였다. 그래서 교통접근성의 변화로 인한 주변 토지 이용 변화를 공간적으로 예측하려고 한다. 도시화 현황을 살펴보기 위해서 지적도 자료를 이용하여 미시적인 경관 분석을 실시한 후 교통접근성의 변화에 따른 주변 토지이용 변화의 상관성을 분석하기 위해 교통자료와 토지이용 자료를 GIS분석 및 통계 분석하였다. 그리고 상관성 분석 결과를 멀티 에이전트 시스템 전용 플랫폼에 적용하여 시뮬레이션 분석을 하였다.

• Transactions of the Korean Society of Mechanical Engineers
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• v.8 no.2
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• pp.178-183
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• 1984

The stresses in lubricants by external force lead to rise in temperature and drop in viscosty, and the performance of lubricants decrease by this phenomena. The processes of shear stress generation and relaxation are linear under light load condition but those are changed into nonlinearly over a certain limit of load and speed, and this phenomena influences to viscosty change. This study investigates dense fluid which carries property change for high shear rate by using molecular dynamics, and that result can be related to research a behavior of property change of lubricants under high speed and heavy load.

• The Bulletin of The Korean Astronomical Society
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• v.36 no.1
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• pp.80-80
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• 2011

이 연구는 일종의 비형식 교육기관인, 과학관 전시물의 배열과 설명문의 구조에 대한 논증적 접근을 목표로 하고 있다. 그러한 접근을 통하여 서대문 자연사 과학관 전시물 배열의 문제점과 새로운 전시물 배열방식을 제안한다. 이를 위해 첫째, 우리는 논증을 바탕으로 전시물 배열의 거시와 미시적 관점의 점검 기준을 설정하였다. 이 분석 결과를 바탕으로 서대문 자연사 박물관 지구의 탄생분야의 전시의 배열에 대한 개선점을 제안한다. 분석은 Booth 등(2008)의 논증에 기초하여 공룡은 다른 동물들에 비해서 어떻게 그렇게 번창하였는가? 그 이유는 무엇인가? 무엇이 이 주장과 이유를 지지하는 증거인가? 질문들을 다루었다. 따라서 이러한 논증 식 전시물 배열이 서대문 자연사 박물관 전시 배열에 도입된다면 더 좋은 전시 효과를 얻을 수 있다고 결론 짓는다.

• Journal of The Geomorphological Association of Korea
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• v.18 no.2
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• pp.15-23
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• 2011

The first paper on the floodplain in Korea was published in the late 1960s. In 1970s and 1980s the study on the floodplain and delta of Korea was led by Hyuck Jae Kwon(emeritus professor at Korea University) and Hwa-Ryong Jo(emeritus professor at Kyungpook National University). Kwon established the foundation of the study and Jo analyzed the alluvial landforms microscopically. Since 1990s, the study on the floodplain and delta has entered a phase of stagnation.

• Journal of the Korean association of regional geographers
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• v.9 no.4
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• pp.559-575
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• 2003

The purpose of this study is to systematically explain and discuss the return migration of Koreans in Central Asia to the Russian Far East. The Koreans' return migration is explained by the combination of push and pull factors inherent in the host and home countries. The structural or institutional push factors in Central Asia include the linguistic policy of a country, civil war, ethnic conflicts, while the micro ones are the Koreans' high concern of their children's education and the improvement of a socio-economic status. The macro pull factors operated in the Russian Far East are the permission to use the housing facilities and land previously controlled by military authorities and the laws of recovering the koreans' basic right and honor, while the micro ones are the networks of relatives and friends living in Central Asia and the Russian Far East. The two aspects related to the Koreans' return migration are also discussed. Firstly, the return migration of Koreans in Central Asia is interpreted as a migration of ethnic affinity. Secondly, the establishment of an autonomous district of Koreans in the Russian Far East is discussed.

• Journal of Energy Engineering
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• v.18 no.2
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• pp.125-131
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• 2009

Physical characteristics of metals such as hardness, wear-resistance and corrosion-resistance can be artificially controlled by ion implantation. The interaction between ion and solid surface was modeled in molecular scale and simulated by the molecular dynamics method in order to understand the ion implantation mechanism. From the microscopic point of view, the molecular behaviors were observed for improving characteristics of ion implantation. For these purposes, the implantation mechanism and the influences of incident energy, surface temperature and molecular weight were discussed in this study. As the results, the penetration probability was even decreased if incident energy was exceeded any values in the case of high temperature of solid surface. Moreover, it was confirmed that ion implantation into solid surface with amorphous state could be more effective for some conditions.

• Journal of the Korea Society for Simulation
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• v.25 no.3
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• pp.41-51
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• 2016

In this study, we propose an improved Floor Field Model(FFM) that considers the physical characteristics of pedestrians, i.e., body size, shape, and posture. Also we analyse limits of FFM and features of improved model compared with existing evacuation simulation models. FFM is a typical microscopic pedestrian model using CA, but it does not reflect the physical characteristics of pedestrians. Because of this, FFM is difficult to modeling phenomena such as collision, friction between pedestrians. As a result, FFM calculates a very short evacuation time when compared with the other models. We performed a computational experiment to compare improved model with other models such as FFM, Simulex, Pathfinder in an actual campus building. We carried out a comparison of evacuation aspect according to the change in number of evacuees. Also we compared evacuation aspect by exit. Finally, we confirmed that improved model reflects physical phenomena which were not reflected in FFM. Especially, experimental results were very similar to the Simulex.