• 한국전산유체공학회:학술대회논문집
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• 2007.04a
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• pp.64-67
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• 2007

In the present study, the wind pressure transients on platform screen door in side platforms caused by passing trains have been investigated numerically. The transient compressible 3-D full Navier-Stokes solution is obtained with actual operational condition of subway train and the moving mesh technique is adopted considering the train movement. To achieve more accurate analysis, the entrance and exit tunnel of platform are included in a computational domain and detailed shape of train is also modeled Numerical analyses were conducted on five operational condition which are different velocity variation of subway train, existence of stationary train and passing each other trains. The results show that pressure load on platform screen door is maximized when the two trains are passing each other. It is also seen from the computational results that the maximum pressure variation was found to be satisfactory to various foreign standards.

• Proceedings of the Korea Contents Association Conference
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• 2013.05a
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• pp.371-372
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• 2013

먹거리 안전에 대한 우려가 커져가면서, 무엇을 먹을 것인지 식료품을 어떻게 구매할 것인지에 대한 소비자들의 관심이 증가하고 있다. 미국에서 2000년 중반부터 생겨난 신조어인 '로카보어 (locavore)'는 이와 같은 현상을 반영한 것이다. 이 용어는 지역이라는 의미의 '로컬(local)'과 먹는다는 뜻의 'vore'에서 파생된 것으로서 '지역에서 생산된 음식을 먹는 사람'이라는 의미를 가지고 있다. 건강에 좋은 음식을 소비하기 위한 적절한 장치로 로카보어 운동은 여러 가지 방식으로 음식 공급 체계를 유지할 수 있다. 농촌경제는 이어지는 FTA체결 등 시장 개방의 압력으로 인해 쇠퇴 일로에 있다. 이와 같은 관점에서 보면 지금은 지역농업을 살리기 위한 보다 효과적이고 실질적인 대응책을 개발할 시점이다. 따라서 로카보어 운동을 활성화함으로써 농촌 공동체는 사회적 결속을 강화할 수 있을 뿐만 아니라 지역경제 활성화를 꾀할 수 있다. 이 연구에서는 경기도 포천을 로카보어 운동의 한국형 모델로 선정하였다. 이는 포천이 서울과 근접해 있으며 관광객들이 자주 찾는 관광콘텐츠가 지역에 산재해 있을 뿐만 아니라 도 농복합도시로서 다수의 농장과 경작지로 구성되어있기 때문에 인근 대도시의 농축산물 수요를 충족할 수 있는 충분한 농축산물 산지라는 것이 장점이다. 이러한 측면에서 포천은 품질 좋은 지역의 농축산물의 공급처로서 '농축산 플랫폼(agro-platform)'의 구축을 체계화함으로써, 한국형 로카보어 운동의 중추적인 역할을 할 수 있을 것이다.

• Journal of the Korean Society of Clothing and Textiles
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• v.40 no.1
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• pp.114-130
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• 2016

This research provides practical data to develop UV protection masks and dust protection masks. It surveyed uncomfortable factors and significant characteristics for masks. It used 653 subjects 20-79 years old and performed the research from April to May in 2014. Wearing masks at outdoor activities is not widely popular yet, but golf players, mountaineers and old people were quite interested in masks. People mainly wore a basic shape mask, but main age group of each mask shape was different. People usually prioritized the protection function and comfort of wearing over design; however, women, young generation and people attending to outdoor activities longer than 1 hour considered design quite important. People going on picnic or camping consider mask characteristics most important. Therefore, various mask shapes and protective functions should be developed to reflect consumer needs. Meanwhile, the discomfort levels of masks were not too high, but old people felt more discomfort than young people. The most discomfort factors were 'other's eye', 'distracting face movement' and 'feeling of foreign object'. They also mentioned falling problem of C shape mask and short-rib shape mask, and asked for a 'tighter fit' at the ear.

• Journal of the Korean Regional Science Association
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• v.10 no.1
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• pp.89-104
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• 1994

Recently, environmental issues have remained high on the agendas of public discussion and economic research. In the case of Korea, democratic movement in the late 80's centered people's concerns on the environmental dispute according to landfill, correctional institution, crematory, and nuclear powerplant, etc., Moreover, the failure to provide these kinds of facilities in time have caused serious social problems associated with environmental protection and economic development. The purposes of this paper are threefolds. First, they organize foreign and domestic NIMBYS case studies which have been settled in a desirable way. The second concern is to analyze the consciousness of NIMBYS resident by making up a questionnaire. Third, they estimate the market values of urban unwanted facilities by employing CVM(Contingent Valuation Method) procedure. The results of the study have a double implication : that NIMBYS resident are reluctant to accept government mechanical compensation based on simple published land values, and that unique concensus to preserve the viability and healthfulness of our environment among three main bodies: residents, people, government is necessary in solving NIMBYS subjects in Korea. In addition, this first implication develops to emphasize the intrduction of releveant measures taken to reconcile NIMBYS disagreement, which are complete openness of government policies, full support of local economic development, and perfect management of pollution protection systems for NIMBYS facilities.

• Journal of the Korean Society of Clothing and Textiles
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• v.9 no.3
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• pp.71-78
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• 1985

This research is designed to systemize the protection theory as well as to supplement the missing theory by organizing various studies on the protective functions of celothes by domestic and foreign scholers of clothing. Human environments is classified two standpoints : (1) Physical environments, and (2) man built psychological environments including socio-physical environments, socio-biological environments, behavioral environments, socio-psychological environments and institution environments. Clothes acting as a physical protection might be of (1) extreme air temperature: Parka; (2) high relative humidity: raincoat; (3) air movement: windbreaker; (4) radiation: space suit; (5) atmospheric pressure: deep sea diver suit; (6) mechanical agent: bullet proof vest; (7) physical agent: (8) chemical agent: (9) biological agent: surgeon's gown, cap, and mask. Also dresses act to support the body comfort, health and the well-being; corset for bad back patient, wrist band for people with weak wrist, bottom half of pressure suit for people with low blood pressure. Clothes acting as a psychological protection might be of (1) influence of magic and of spirits: (2) moral danger; (3) the general unfriendliness of the world as a whole; a reassurance against the lack of love. Clothes should provide the maximum of satisfaction in accordance with the full recognition of reality. The reality should aim at the formulation of general laws concerning the most pleasing forms, colors, and styles to suit. The complex physiological anatomical and psychological aspects of individual personalities.

• Fire Science and Engineering
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• v.10 no.3
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• pp.10-18
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• 1996

In foreign country such as USA and Japan, considerable research has been done regarding the spread of smoke in room of fire involvement by using computer. but, in our country it has not been, so, this paper presents a detailed qualitative description of phenomena which occure during typical fire scenarios through numberical analysis. The governing equations are solved by using FVM method with non-staggered grid. The SIMPLE method for pressure-velocity couple and power-law scheme for convention terms are used. It shows that a plume is formed, hot plume gases impinge on the ceiling and they spread across it. then, it eventually reaches the bounding walls of the enclosure. It takes 20s for smoke to fill the enclosure.

• Journal of computational fluids engineering
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• v.12 no.4
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• pp.1-6
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• 2007

In the present study, the wind pressure transients on platform screen door in side platforms caused by passing trains have been investigated numerically. The transient compressible 3-D full Navier-Stokes solution is used with actual operational condition of subway train by adopting the moving mesh technique considering the train movement. To achieve more accurate analysis, the entrance and exit tunnel connecting the stations are included in a computational domain with modeling the detailed shape of the train. Numerical analyses are conducted on five operational conditions which include the variation of the train speed, case with or without the train stopped in the other track, and case for two trains passing each other inside the station. The results show that pressure load on platform screen door is maximized when the two trains are passing each other. It is also seen from the computational results that the maximum pressure variation for the cases considered in the present study is found to be satisfactory to various foreign standards.

• The Research Journal of the Costume Culture
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• v.20 no.3
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• pp.295-308
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• 2012

This study intends to analyze the up-cycling trend that is attracting great attention these days and its internal meaning in the context of fashion art. And, based on this, to provide enhanced value and creativity in the future fashion artwork and design businesses, keeping abreast of further fashion art developments. As part of the study methodology, both a literature review and a case study were carried out, along with an examination of up-cycling and research into related pictures and content. The materials covered in this work include design and fashion related books and domestic and foreign magazines from 2000 to 2011, when the up-cycling movement was initiated as a form of eco-friendly design. For the analysis of fashion art pieces, generic terms included art wear, wearable art wear, and unwearable art. Case review was followed by the works of artists shaping their fashion concept and meaning entirely from abandoned clothes and fabrics, waste materials, and their art collection. Consequently, key elements of the value of up-cycling fashion art are that it is eco-friendly, has a unique identity, and reflects multi-dimensionalism. This research saw the integration of fashion with other variables, artistic attributes, and reuse of resources. This could lead to a new realm where value-addition is formed and extended, thus providing another chance for the fashion industry.

• The KIPS Transactions:PartC
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• v.9C no.5
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• pp.749-756
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• 2002

As Internet access through mobile devices is increasing, Mobile IP is the protocol to provide the mobility of a host on the existing IP. It is important to provide secure authentication when mobile node register with home agent through the foreign agent each time it moves. In this paper, we propose the authentication mechanism using a regional registration. The proposed authentication mechanism reduce frequent home registration in regional movement. The simulation results show that the proposed authentication reduces the total registration time and is more efficient than conventional registration mechanism.

• The Journal of Asian Finance, Economics and Business
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• v.8 no.4
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• pp.55-67
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• 2021

This study aims to measure the lower tail dependence as risk contagion from the U.S. economy to 18 developing countries affecting FDI inflows using time-series data from 2005 to 2019. Firstly, we utilize four dynamic copula models, namely, Student-t, Clayton, rotated survival Gumbel, and rotated survival Joe, to measure the tail dependence structure between the U.S. and each developing country's real GDP growth. Secondly, we use the regression model to explore the contagion effects on FDI inflows. The results show that there is evidence of the tail dependence between the U.S and developing economies, indicating the presence of the contagion effects. Primarily, we observe that the degree of contagion effects of the global financial crisis varies across countries; a strong impact is observed in Chinese, South African, Russian, Colombian, and Mexican economic growth. Furthermore, we found significant contagion risk affecting FDI inflows positively in China, Indonesia, Columbia, Morocco, and negatively in the Philippines, Bulgaria, and South Africa. This study demonstrates the usefulness of the copulas model in terms of examining contagion. Our findings shed light on the influence of sound policies and regulations to cope with both positive and negative consequences of the contagion on the capital movement.