• 한국경영과학회지
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• 제4권1호
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• pp.59-64
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• 1979

The application of optimization techniques to the planning of industrial, economic, administrative and military activities with random technological coefficients has been extensively studied in the literature. Stochastic (linear) programs with simple recourse essentially model the allocation of scarce resources under uncertainty with linear penalties associated with shortages or surplus. This work on a problem with a discrete random resource vector, "The allocation of aircraft under uncertain demand" given in (1), is easily and efficiently handled by the application of the recently developed Wets' algorithm (8) for solving stochastic programs with simple recourse, which approves that such class of stochastic problems can be solved with the same efficiency as solving linear programs of the same size. It is known that the algorithm is also applicable to stochastic programs with continuous random demands for their approximate solutions.

• 대한가정학회지
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• 제39권12호
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• pp.141-158
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• 2001

The purpose of this study was identifying the essential concept of home of middle class and aged housewives by using a critical incident methodology. All 30 subjects participated in structured interviews designed to elicit statements describing the attributes of home and non-home environment. The qualities of comfort, place-attachment, self-expression, fundamental values and personal identity, social relationships, economic value, and a suitable physical structure were associated with home environments, and were absent in residences which were not regarded as homes.

• 아동학회지
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• 제26권1호
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• pp.347-357
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• 2005

The purpose of this study was to investigate the effect of the Nature-friendly program on children's Emotional Intelligence. The subjects of this study were two groups( experimental group and non experimental group). Each group consists of 30(8 years olds) elementary school children in Seoul. Examination of Emotional Intelligence was applied to determine the homogeneity of 2 groups. Experimental group received 10 Nature-friendly programs for 15 weeks from July 2004 to October 2004. After Nature-friendly programs ended, post examination of Emotional Intelligence was applied. The result of this research was as follow. When Nature-friendly programs was applied, there were significant differences in the degree of emotional intelligence in the experimental group. Children who were involved in nature-friendly program increased in emotional intelligence. Nature-friendly program was effective in the sub-factors of self-awareness, self-regulation, other-awareness, other-regulation of emotional intelligence.

• 대한안전경영과학회지
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• 제17권4호
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• pp.365-372
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• 2015

This paper reviews the one of problems that may occure for the tram operating in Korea, it's a free-riding problem, I analyzed the feasibility of combining the introduction of world-class technology solution "IT". It is under review the introduction of tram in Su-won city, Chang-won city, Wi-Rye new town. Free-riding is one of the biggest issues of any agency that operates the public transportation system. It has been acting as the main factors threatening the financial integrity of the operating agency, and the ratio of free-riding is further increased. In this paper, I want to build a foundation for the development of the system by analyzing the economic feasibility for the introduction of free-riding prevention system.

• 한국막학회:학술대회논문집
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• 한국막학회 1997년도 제5회 하계 Workshop (97 한,카 국제공동 Workshop, 고도 수처리를 위한 막분리 공정)
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• pp.67-92
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• 1997

Tap water should be shown the complexity of measures neccessary to secure water quality, especially with respect to drinking and bathing. Designated reservoirs Paldang and Daechung as the Special Environment Protection Areas to regulate new pollution sources and to facilitate construction of wastewater treatment facilities. In this country, 91% of total drinking water resource, consist of 66% stream water, 25% dam water, 7% dune flitrate, 1% each of spring and ground water, are from the surface water. The total volume of annual mean water resources due to precipitation. Over 8% of the total resources are class III as shown in the table., eapecially the water quality of downstream of Nakdong and Yeongsan river are getting worse due to continued economic and social development.

• 경영과학
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• 제10권1호
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• pp.193-205
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• 1993

This paper presents a mathematical model for a class of vertical integration decisions. The problem structure of interest consists of raw material vendors, components suppliers, components processing plants, final product (assembly) plants and external components buyers. Economic feasibility of operating components plants instead of keeping outside suppliers is our major concern. The model also determines assignment of product lines and production volumes to each open plant considering the cost impacts of economies of scale and plant complexity. The problem formulation leads to a concave, mixed integer mathematical program. Given the state of the art of nonlinear programming techniques, it is often not possible to find global optima for reasonably sized such problems. We developed an optimization solution algorithm within the framework of Benders decomposition for the case of a piecewise linear concave cost function. It is shown that our algorithm generates optimal solutions efficiently.

• 한국실내디자인학회논문집
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• 제21권6호
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• pp.280-288
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• 2012

The globalized modern society has facilitated the borderless travel which always starts and ends at the airport. The airport now serves the gateway in spreading and delivering the culture, beyond the role of simply providing assistance to the transport means. Nowaday, the nations throughout the world expand the existing facilities or build the new airport competitively as the medium to link the travel and modern community as well as the symbolism of economic and technical improvement and it has been developed as a huge industry creating a high added value, beyond the simple transport services. Incheon International Airport has already been recognized as the world-class airport but still has a long way to go. It's necessary to develop the comprehensive cultural and art concept for sustainable value creation, instead of remaining as the airport with sophisticated facilities alone.

• 농촌지도와개발
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• 제18권3호
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• pp.435-483
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• 2011

This paper was to study characteristics of school types based on classification of rural areas. This study tried to provide basic data for implementing the development of rural education policy for the community unit by classifying and analyzing administrative districts. For the purpose, the researcher carried out literature reviews and selected three schools considering the gaps in size and location of rural community. The researcher interviewed teachers and parents, to gather information about rural education, and conducted participant observation on educational activities. As a result, this study showed each rural school has its own distinct characteristics by the school types corresponding to each rural community. Characteristics with school types were influenced by school location, possible migration into the cities, possible opportunities of private tutoring, school size, social class distribution, socio-economic status, dwelling pattern of school teachers. In conclusion, it is important that the educational policies for rural area consider the different characteristics of rural schools.

• 한국추진공학회:학술대회논문집
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• 한국추진공학회 2017년도 제48회 춘계학술대회논문집
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• pp.41-46
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• 2017

한반도를 둘러싼 세 나라인 일본, 중국, 러시아는 경제력이나 국력 등에서 세계를 주도하는 나라들이다. 이들은 과학기술분야, 특히 우주분야에서 선두를 다투는 국가들이다. 그에 비해 우리는 새로운 발사체 개발이 중반에 들어섰고, 새로운 발사장 구축도 한창인 수준이다. 본 논문에서는 러시아 기술을 근간으로 하고 있는 러시아와 중국의 발사장의 현황을 알아보고, 이를 통하여 한국형발사체 발사대구축 및 향후 기대되는 미래 발사체 구축에 참고로 삼고자 한다.

• 대한가정학회지
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• 제34권3호
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• pp.283-290
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• 1996

The objectives of this study was to research and analyze the actual conditions of using air-conditioning, which will help to understand the households' demand on a air-conditioning. The target of this study was the households in the seoul area. The data was collected by considering housing type, size & heating systems. On the basis of these findings, are the result of the demand for air-conditioning. 1)The possibility of purchasing this air-conditioning was higher among the households with ￦1,000,000 monthly income. Especially, the households with ￦2,000,000 to ￦2,500,000 monthly income were the main class of the demand. 2)The possibility of purchasing it was higher from husband's age over 30. 3)Both apartment and detached house dwellers were high in purchasing it. 4)The bigger the house was, the higher the possibility of purchasing it. Also, the function and the condition of air-cleaning function, which was concerning most on the economic point of view.