• Journal of the Korea Safety Management & Science
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• v.14 no.2
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• pp.137-145
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• 2012

본 연구는 공급자(supplier), 소매상(retailer) 그리고 고객(customer)으로 구성된 2 단계 공급사슬에서 소매상의 관점에서 소매상의 최적 재고정책 결정에 관한 문제를 다루었다. 공급자는 수요 증대를 목적으로 소매상의 주문량에 따라 다단계로 일정기간동안 제품 판매대금에 대한 지불 연기(외상)를 허용하고, 고객의 수요는 소매상의 제품 재고량에 영향을 받는다는 가정 하에 재고 모형을 설계하였다. 모형 분석을 통하여 소매상의 이익을 최대화하는 최적 주문량 결정 방법을 제시하였고, 예제를 통하여 그 제시된 해법의 타당성을 보였다.

• Journal of Navigation and Port Research
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• v.38 no.1
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• pp.73-79
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• 2014

As Korean expanded the leisure time and improved the national incomes, the interest and demands of the marine leisure activities are increasing. However, it needs to considerate the infrastructure improvement for supporting these demands. This paper analyzed the problems based on the status of domestic marina port facilities including the absence of integrated management division and minimum standards for port facilities, governmental-centered administrative procedure, lack of professional manpower and linkage among educational institutes in aspect of navigators To improve these problems, this paper suggest that management system would be user-centered marina for marine leisure activities to make the integrated management division for marina port, the minimum standards for port facilities, realization of CIQ, familiarity for citizen and linkage among educational institutes.

• Proceedings of the KIEE Conference
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• 2011.07a
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• pp.394-395
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• 2011

본 연구에서는 신재생자원인 풍력발전을 WASP 모형 내에 공급측 자원으로 반영하여 수급계획을 수행해 보았다. 기후적 요인에 대한 의존성이 매우 강한 수력발전의 경우 WASP 모형 내에서 모델링이 가능한데, 다른 신재생에너지의 경우도 수력과 유사한 형태를 가지고 있기 때문에 WASP 모형 내에서 수력발전 시스템과의 입력형태만 맞추어 주면 신재생에너지의 공급측 관점에서의 해석이 가능해진다. 이는 신재생에너지로 인한 신뢰도 영향, 즉 LOLP의 변화를 확인할 수 있는 장점을 가지고 있다. 본 연구에서는 5차 수급계획에서 예측수요에서 시간대별 신재생에너지를 차감한 수요측 관점의 신재생에너지 모델링 방법과 공급측인 수력발전으로 모델링하여 수급계획을 수행한 결과와의 LOLP값을 비교하였다.

• Water for future
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• v.52 no.1
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• pp.40-51
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• 2019

본 연구를 통해 재난안전데이터의 공동활용을 위해 다양한 관점에서의 데이터 표준화가 필요하다는 것을 확인하였다. 향후 4차 산업혁명에서의 데이터의 위치와 빅데이터에서의 데이터 융합, 공공데이터 이용에 대한 패러다임의 변화에서도 볼 수 있듯이 재난안전정보 뿐만 아니라 데이터는 수요자 중심의 활용과 이용으로 새로운 데이터의 가치를 얻을 수 있음을 알 수 있다. 이러한 재난안전정보의 효율적이고 체계적인 공동활용을 위해 재난안전정보 관점에서 비정형 자료의 데이터 수집, 데이터베이스의 관리 및 데이터의 표준(안), 재난안전정보의 교환 표준(안) 및 공동활용 전략을 제시하였다. 이러한 연구를 통해 재난안전정보의 공동활용 체계를 구축하여 정보공유 및 재난안전정보의 추적, 활용이 가능하게 하여 신속하게 대국민 재난정보를 제공할 수 있는 체계를 구축하여 경험기반의 재난관리 및 지능형 재난관리의 의사결정을 지원할 수 있는 시스템으로 확장할 수 있을 것으로 기대한다.

• Proceedings of the Korea Information Processing Society Conference
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• 2010.11a
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• pp.859-862
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• 2010

정부기관의 대민서비스 제공 관점이 수요자 중심으로 전환되고 대국민 만족도 측면의 중요성이 강조되면서 정부기관 콜센터의 운영 및 서비스에 대한 표준화된 품질 평가에 대한 고려가 필요하게 되었다. 본 논문에서는 정부기관 콜센터 품질 평가 기준을 운영체계 운영서비스 운영성과 관점에서 제시하여, 정부기관 콜센터의 운영효율성 제고, 상담서비스 품질 확보 및 대국민 만족도를 향상하기 위한 평가 프레임워크를 제시하고자 한다.

• Journal of Families and Better Life
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• v.28 no.4
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• pp.1-13
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• 2010

The purpose of this study is to conduct base line research, which is based on requestion of international married immigrant women, for developing social adaptation and family enrichment program for those population who reside in Korea. The survey questionnaire was distributed to 142 international married immigrant women who reside in Seoul to research program participate satisfaction and requestion. Analyze the study results, frequency, percentage, t-test, ANOVA and Duncan-post test were utilized. As a result, overall satisfaction toward program that offered by organization was highly ranked. Visiting service showed high score of satisfaction but mentor service that strongly possess sacrifice showed lower score of satisfaction. Vocational and job-related skill improvement education presented less satisfied degree of satisfaction but cooking class, computer class, training education for native-speaking instructor present high level of satisfaction. Second, the requisition of target population, who did not participate program, presented lower than the satisfaction, still present high demand of variety area of program. Among them, assist child nurturing and vocational and job- related skill improvement education showed high demand. It enable to predict that they are eager to get support toward parent role and self-realization. Third, when the difference were analyzed to compare the subjective judgement toward life adaptation in Korea and the satisfaction for program user and the requisition of non-user, the meaningful differences were founded; especially, individuals who possess confident degree of computer skills and Korean(reading, speaking, and listening) showed higher degree of satisfaction to vocation and job-skill related improvement education. This study has a practical implication, which is based on the study results, on developing a program to support international married immigrant women and multicultural families to satisfactory settlement in Korea life and to maintain healthy families.

• The Journal of the Korea Contents Association
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• v.18 no.12
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• pp.229-237
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• 2018

This paper considers effective timetable modules in order to easily satisfy various user requirements during scheduling timetables in universities. Noticing that the methods for allocating time blocks change according to the timetable modules, we suggest six models of symmetric timetable modules composed of 4 blocks, and show that our models have more benefits without any loss from the viewpoint of customers, if the suppliers consider the decreasing upper bound of ratio utilizing space resources. By adapting a concept of potentially determined blocks and suggesting their management strategies, finally, we accomplish a method for supporting flexibility and controllability when the universities timetables are scheduled.

• Journal of Korean Society of Transportation
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• v.25 no.5
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• pp.111-122
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• 2007

This paper investigates the rail service patterns by train class. The emphasis in intercity rail planning is to more efficiently use of existing station facilities. Rail transit operations are affected by the system layout and ridership patterns and by work rules. Operations are also influenced by past practices and the institutional setting. Main factors to decide train service patterns are the location, socioeconomic characteristics, land use and travel demand of the station. In this context, the travel demand of intercity rail station is of crucial significance. Tests on a KTX case shows that train service frequency can be efficiently decreased in weekday to transport the same passenger demand. The work has shown many subjects that need further research including various factors influencing on train frequency. This study serves the railroad authorities in planning and determining business strategy in the increasingly competitive environment of regional rail transport.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.3
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• pp.1318-1326
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• 2014

The change of concept about real estate marketing and the solution about unsold houses are getting important nowadays. This paper is analyzing the solution of unsold houses as location environment, residential environment, macro environment, and marketing, and research question is which elements are important to real users. In addition, this paper is analyzing on impact relationship in terms of real users' buying intention about unsold houses and satisfaction of price of selling a house (price of selling a house, rise in housing value) by PLS structural equation. To sum up, first, macro environment, residential environment, location environment is statistically valued on the satisfaction of price of selling a house. However, marketing strategic is not impacted on the satisfaction of price of selling. Second, macro environment, marketing strategic, satisfaction of selling a house is statistically valued on buying intention.

• Journal of Internet Computing and Services
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• v.21 no.1
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• pp.159-167
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• 2020

The Korean government has pursued various policies to revitalize the cloud industry since 2009. In particular, the government enacted the 'Cloud Computing and Privacy Security Act' for the first time in the world in 2015, creating institutions and support programs to boost the cloud industry. As a result, the volume of the cloud industry has increased significantly, and the number of companies and professionals have increased. In this paper, the researches analyzed the situation of Korean cloud market, usage of cloud computing in enterprises, effects and problems of cloud-enabled companies based on the industrial survey conducted from 2016 to 2019, In this study, the results showed concerns of security, uncertainty about cost savings, and IT capabilities of enterprises as problems in revitalizing the cloud industry. The researches also propose strategies, perception changes, and development processes for companies to resolve the problems.