• 한국항만경제학회:학술대회논문집
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• 한국항만경제학회 2007년도 국제학술대회 및 정기총회
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• pp.161-173
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• 2007

This paper considers the problem of determining the cargo flow and the transportation mode in each trade route while satisfying the demand. Especially, the problem incorporates short sea shipping in Korea, which is becoming more important in order to improve efficiency of Logistics. The objective is to minimize the sum of shipping and inland transportation costs. To solve optimally the problem, this paper employs a linear programming model, which is an operations research technique for optimization. The problem is formulated by extending the well-known network design problem by considering capacity at seaport and limitation of total number of vehicles. The model is solved using CPLEX, a commercial linear program software. The test results using a real cargo flow data in Korea show that the model represents closely the real situation.

• 복식문화연구
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• 제5권1호
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• pp.71-83
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• 1997

It is the important situation that the fashion industry is faced to enormous changes in the nation and worldwide market. To cope with this situations, it is necessary to clarify that the concept of fashion design and its process. This study was conducted as followings : 1. Fashion design is the process of problem solving including the steps of understanding problem, visualizing the image of a design concept. 2. The systematic and intuitive approach is harmonized to solve the process of fashion design. 3. The step of understanding problem is consist of the analysis of environments, the explanation of problem, the determination of purposes, the definition of problem and the visualizing the image of a design concept. 4. In the step of the visualizing the image of a design concept, the intuitive approaches can be clarifies as the importance of start, the step by step process, the determination of a design concept, the fixations of an image, the image realization through real objects, the diminution a difference between a concept and a visualizing the image and the necessity of exercises.

• 산업경영시스템학회지
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• 제36권3호
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• pp.95-108
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• 2013

The problem of constrained sequencing of a set of jobs on a conveyor system with the objective of minimizing setup cost is investigated in this paper. A setup cost is associated with extra material, labor, or energy required due to the change of attributes in consecutive jobs at processing stations. A finite set of attributes is considered in this research. Sequencing is constrained by the availability of conveyor junctions. The problem is motivated by the paint purge reduction problem at a major U.S. automotive manufacturer. We first model a diverging junction with a sequence-independent setup cost and predefined attributes as an assignment problem and this model is then extended for a more general situation by relaxing the initial assumptions in various ways.

• 한국수학교육학회지시리즈A:수학교육
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• 제38권2호
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• pp.189-197
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• 1999

Discrete mathematics allows students to examine and explore unique, special problem situations which were not used to solve problems by paper-and-pencil procedures or applying common formulas. The use and integration of accessible computer-related technologies such as 'Mathematics' or 'Maple' software programs enables students to explore problem situation dramatically. This study shows that it is possible to introduce computer-based discrete mathematics focused on the Leslie matrix model as modeling age-specific population growth to high school students.

• 한국경영과학회지
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• 제18권1호
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• pp.29-43
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• 1993

This paper condisers a problem of determining arc capacities for a communication network with fixed-charged linear arc-cost functions, which is known to be NP-hard. For the problem, an efficient heuristic solution procedure is derived. The procedure is further shown working well for designing arc capacities of a network in a situation where the network needs to be extended by connecting its nodes to some new nodes or where the network needs to be extended by expanding its arc capacities.

• 응용통계연구
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• 제7권1호
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• pp.1-17
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• 1994

본 논문은 종속변수가 중도 절단된 경우 역추정을 베이지안 방법으로 접근하였는데 이때 특별히 Gibbs Sampling을 응용하여 사후분포를 계산하는 것을 토의하였다. 적용의 예로서 실제 자료에서의 점추정 및 Simulated Annealing을 이용한 구간추정도 하였다.

• 한국경영과학회지
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• 제6권1호
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• pp.25-32
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• 1981

The optimum design problem of a proposed oil pipeline network has been formulated as a zero-one programming model to determine the optimum sizes of pipe and pump which minimize the sum of material costs and operating costs during the 20 years of life span. Applying to a real situation, the problem constitutes an assignment type zero-one programming with 372 zero-one variables and 13 constraints. A heuristic algorithm has been developed based on the modified Petersen algorithm utilizing the special form of the activity matrix. The results showed impressive cost savings of 37 percent of the total cost from the original proposal.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2004년도 추계학술대회 논문집
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• pp.1745-1750
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• 2004

If we free ourselves from the fixed idea that cultural activity is possible within specific cultural facilities including cultural space and are able to solve the architectural problem, achieving a new idea's railroad space will be possible, The purpose of this study is listed below. Present guide line and traffic policy for an omnibus of design as connected KTX which enables connected way within KTX, considering the situation that the users' traffic problem is increasing.

• 한국수학사학회지
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• 제17권4호
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• pp.123-132
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• 2004

이 글에서는 20세기의 문제 해결의 역사에 대하여 개관하고, 21세기에 새로운 경향으로 주목받고 있는 모델링 관점에서의 수학 문제 해결에 대하여 알아보았다. 전통적인 문제 해결에서는 상황과 분리되어 있는 문제의 조건을 수학적 표현으로 바꾸는 번안 기술의 습득을 주요 관심사로 다루었다. 반면에, 모델링 관점에서 문제 해결은 해결할 필요가 있는 현실적인 문제 상황에서 출발하여 수학적인 정리 수단으로 재조직하고, 수학적 상황에서 문제를 해결하여 다시 실제 현상에 적용하는 과정을 따른다. 따라서, 학생들은 문제를 해결해 가는 과정에서 수학화를 경험하게 되고, 수학을 배우게 되는 이점이 있다.

• 대한가정학회:학술대회논문집
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• 대한가정학회 2003년도 제56차 춘계학술대회
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• pp.1-11
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• 2003

The purpose of this paper is to describe the situation of everyday life of women and men in Germany and gender related aspects. Therefore social demographical data, presented by the Office for European Statistics, Luxembourg and by German statistical data, are used. Based on this data the different roles, responsibilities, and social positions of women and men are interpreted in the context of the idea of mainstreaming gender. In comparison to other European countries, especially to the Scandinavian countries, the situation of women in Germany still has to be improved. It is a prevalent problem for women to arrange family life and working career, because the gender-related role-allocationis still an issue. Women, who are involved in looking after children, are significantly less engaged in business life, as for men caring does not make a difference, whether they are employed or not. In addition to this fact women on average earn less than men, especially for women working in higher positions. To improve the situation of women and men the German government has initiated a 'Gender Mainstreaming Policy' in 2000 and has taken important legal measures which make it possible to reconcile family-life and gainful employment. For Home Economists there is a need to integrate the gender dimension into a household analytical approach.