• 대한영양사협회학술지
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• 제7권1호
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• pp.80-86
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• 2001

The purposes of this study were to: a) examine characteristics of foodservice management practices; b) investigate characteristics of recipients; c) analyze foodservice systems; and d) provide feedback for the efficient and effective foodservice management of mental disorder care sites in Korea. A total of 46 sites was analyzed by questionnaire survey. Statistical data analysis was completed using the SPSS package program for descriptive analysis. As results of site recipients' characteristics, 60% of total sites were males and 40% were female recipients. Average 60% of recipients were from 30 to 40 years old. Major diseases of recipients were mental disorder, high pressure, and obesity. According to the result of foodservice system analysis, the average meal cost per day was about 2,921 won and average food cost percentage was 39%. Average number of meals per day was about 600 meals. All sites had on dietitian and 88.3% of sites had one cook as a full-time employees. In the part of procurement, dietitians were major chargers of sites for purchasing foods. Major purchasing method was the order and delivery contract. About a half of sites used cycle menu system and standardized recipies. Most of sites had recipients survey systems for evaluating meal satisfaction. About 60% of sites provided liquid diets to recepients and 22% provided diabetic diets. Dietitians at sites had problems on low meal cost budget, lack of cooking professionals, and lack of information about treatment meals for mental disorders for providing higher quality of foods cure recipients. The results suggested that financial and systematical supports by the government would be very necessary to meet the goal of nutritional balanced meal services.

• Journal of Computational Design and Engineering
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• 제1권2호
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• pp.140-151
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• 2014

Storing, and the loading and unloading of materials at production sites in the manufacturing sector for mass production is a critical problem that affects various aspects: the layout of the factory, line-side space, logistics, workers' work paths and ease of work, automatic procurement of components, and transfer and supply. Traditionally, the nesting problem has been an issue to improve the efficiency of raw materials; further, research into mainly 2D optimization has progressed. Also, recently, research into the expanded usage of 3D models to implement packing optimization has been actively carried out. Nevertheless, packing algorithms using 3D models are not widely used in practice, due to the large decrease in efficiency, owing to the complexity and excessive computational time. In this paper, the problem of efficiently loading and unloading freeform 3D objects into a given container has been solved, by considering the 3D form, ease of loading and unloading, and packing density. For this reason, a Group Packing Approach for workers has been developed, by using analyzed truck packing work patterns and Group Technology, which is to enhance the efficiency of storage in the manufacturing sector. Also, an algorithm for 3D packing has been developed, and implemented in a commercial 3D CAD modeling system. The 3D packing method consists of a grouping algorithm, a sequencing algorithm, an orientating algorithm, and a loading algorithm. These algorithms concern the respective aspects: the packing order, orientation decisions of parts, collision checking among parts and processing, position decisions of parts, efficiency verification, and loading and unloading simulation. Storage optimization and examination of the ease of loading and unloading are possible, and various kinds of engineering analysis, such as work performance analysis, are facilitated through the intelligent 3D packing method developed in this paper, by using the results of the 3D model.

• 산업경영시스템학회지
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• 제39권4호
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• pp.72-80
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• 2016

The market size of plant projects in overseas is so large that domestic EPC project contractors are actively seeking the overseas projects and then trying to meet completion plans since successful fulfillment of these projects can provide great opportunities for them to expand into new foreign markets. International EPC projects involve all of the uncertainties common to domestic projects as well as uncertainties specific to foreign projects including marine transportation, customs, regulations, nationality, culture and so on. When overseas project gets off-schedule, the resulting uncertainty may trigger unexpected exceptions and then critical effects to the project performance. It usually require much more time and costs to encounter these exceptions in foreign sites compared to domestic project sites. Therefore, an exception handling approach is required to manage exceptions effectively for successful project progress in foreign project sites. In this research, we proposed a methodology for prediction and evaluation of exceptions caused by risks in international EPC projects based on sensitivity analysis and Bayesian Networks. First, we identified project schedule risks and related exceptions, which may meet during the fulfillment of foreign EPC projects that is performed in a sequence of engineering, procurement, preparatory manufacture, foreign shipping, construction, inspection and modification activities, and affect project performance, using literature review and expert interviews. The impact of exceptions to the schedule delay were also identified. Second, we proposed a methodology to predict the occurrence of exceptions caused by project risks and evaluate them. Using sensitivity analysis, we can identify activities that critically affect schedule delay and need to focus by priority. Then, we use Bayesian Networks to predict and evaluate exceptions. Third, we applied the proposed methodology to an international EPC project example to validate the proposed approach. Finally, we concluded the research with the further research topics. We expect that the proposed approach can be extended to apply in exception management in project management.

• 한국건설관리학회논문집
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• 제17권3호
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• pp.43-51
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• 2016

최근 건설공사의 규모와 복잡성이 현저하게 증가함에 따라 건설비용이 상승하게 되었다. 많은 건설공사가 날씨, 노동력 공급, 장비 구매, 사고 등과 같은 다양한 요소들로 인하여 당초 계획했던 공사기일 내에 완공되지 못하고 있다. 계획된 시간 내에 공사를 완공하기 위하여 돌관공사를 시행하여야 한다. 하지만 돌관공사를 위한 결정들이 현장 소장들의 경험에만 의지하고 있는 실정이다. 그러므로 이 논문은 작업조의 투입과 작업시간의 조합으로 생길 수 있는 다양한 돌관공사 시나리오 중 최적의 대안을 선정할 수 있는 TCTO 모델을 제안하고자 한다. 개발된 모델은 실무적인 제약조건을 만족시키는 최적의 공정계획을 제공할 수 있다. 더 나아가서 제안된 모델에 자원평준기능을 포함하게 되면 보다 실용적인 모델이 될 수 있을 것으로 예상된다.

• 품질경영학회지
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• 제46권3호
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• pp.497-508
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• 2018

Purpose: The purpose of this study is to research the revision efficiency of the referenced specifications/standards for raw and subsidiary materials in the field of national defense. Methods: Firstly, it was carried out to investigate the all of the Korean military drawings and establish the database for specifications/standards referenced in the field of national defense. Secondly, it was reviewed the validity of referenced specifications/standards of raw and subsidiary materials. Finally, proposal documents were made for invalid referenced specifications/standards of raw and subsidiary materials in order to suggest alternative specifications/standards. Results: All of the specifications/standards referenced in the Korean military drawings were 11,924 kinds and raw and subsidiary specifications/standards were 2,711 kinds. The proposal documents for revision of invalid referenced specifications/standards were suggested and approved by the military procurement standardization committee of DAPA (Defense Acquisition Program Administration). Therefore, the revision process of 472 kinds of referenced specifications/standards and 160,177 papers of the Korean military drawings were finished. Conclusion: Based on the results of this investigation, it could be significantly reduce to administrative costs and efforts through revision of referenced specifications/standards instead of conventional engineering change.

• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2002년도 학술대회지
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• pp.450-455
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• 2002

21세기 정보화시대에 접어들면서 모든 산업은 정보화와 지식화의 변화 속에서 변화와 발전을 모색하고 있으며 국제경쟁력을 강화하기 위해서 우리나라도 국가경영전략으로 정보화와 지식화를 채택하기에 이르렀다. 특히, 건설업은 그 특성상 프로젝트의 생애주기 동안 다수의 참여주체들에 의해 수많은 양의 정보가 발생되며 이러한 정보들을 효과적으로 관리하고 활용하는 것이 성공적인 프로젝트 수행을 위해 매우 중요하다. 하지만 이러한 정보의 체계적인 관리를 위한 기준인 분류체계의 부재로 인해 많은 정보들이 사라지거나 중복됨으로써 업무의 생산성과 효율성을 저해하고 있다. 따라서 본 연구에서는 기 제시된 건설교통부의 통합건설분류체계와 수량산출기준서, 기타 관련분류체계를 근간으로 시공단계의 건설정보에 적용해 봄으로써 분류체계의 활용화 방안을 제시하고자 한다.

• 시스템엔지니어링학술지
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• 제10권1호
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• pp.1-15
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• 2014

Refinery plant producing petroleum products from crude oil has significantly contributed to the creation of the national interests as a leading engineering industries. However, domestic Engineering Procurement Construction (EPC) companies are facing heavy competition for orders. Domestic EPC companies as EPC contractors are faced with some problems such as undertaking responsibility for FEED packages produced by other FEED companies. But domestic EPC contractors are unfamiliar to development and validation of FEED packages. It causes poor profitability and lower competitiveness of domestic companies. It is necessary for domestic companies to have capability to perform FEED activities in order to overcome these limitations instead of focusing on EPC phase after FEED phase. The systematic procedure is needed to perform the FEED activities, however, there are present difficulties on it due to the lack of experience in FEED packages development which require various engineering knowledge of chemical process, mechanics, electrics, instrumentation, civil engineering. This study has applied systems engineering method which is multi-disciplinary approach to derive and verify the solution to meet the customer's needs when the complex system is developed to task execution process development of FEED activities for refinery plant. The problems that may occur in the future were identified in advance by taking into account the various stakeholders and system context through the application of systems engineering. It helps to develop the task execution process systematically. The developed task execution process of FEED activities is planned to make effectiveness verified by engineering professionals experienced in FEED and continually enhance this process by field application.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.468-476
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• 2001

The ROK TRANSCOM is trying to establish a concrete wartime sealift operation plan. But there are many problems to be solved for setting up the plan. The most serious problem is to procure war materiel to be shipped in U.S.A and next one is to determine the number of sealift assets and to allocate them. The process of sealift operation can be described as follows. Before the order of vessel mobilization, all vessels appointed for activation would be scattered in worldwide in the state of Beaded or unloaded. After the order of vessel mobilization, vessels would go to SPGE(seaport of embarkation) to load war materiel. Some loaded ships should offload the commercial cargo to the near port as soon as they are activated, before they would go to SPOE. All vessels would load procured materiel in SPOE and then go to SPOD(seaport of debarkation). They would offload war materiel in SPOD and then go back to SPOE to load war materiel again. We will simulate this process using ARENA(1), evaluate the sealift capability of ROK and find omit problems of the sealift plan. This model ultimately evaluates the sealift capability and provides planners with critical information far establishing and correcting the plan. This study can also provide military planners with a flexible and accessible decision support tool to provide advance planning under a variety of conditions on the sealift capability. The military planner is expected to make use of this model as a standard for establishing effective and concrete sealift operation in the near future. We can conclude how procurement capability significantly affects the result of sealift operation through this model. We could decide the appropriate levee of sealift asset such as the number of vessels and the number of available berth. So we could allocate effectively the resources for completing the sealift operation within the TGT(Target) time.

• 한국건설관리학회논문집
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• 제11권5호
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• pp.3-14
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• 2010

본 연구는 EPC LSTK 프로젝트의 계획단계에서 계약자가 수행하는 타당성 분석사례들을 조사 및 분석하고, 이에 대한 문제점 및 개선방안 제시를 위하여 수행되었다. 이를 위하여 GCC 국가를 대상으로 한 5개의 타당성분석에 대한 사례를 조사하고 이를 분석하였다. 상기와 같은 목적과 방법에 따라 진행된 본 연구의 결과를 요약하면 다음과 같다. 1) 타당성 분석시 고려변수 등에 대한 영향요인 분석 미흡으로 원가상승, 공기지연 초래 및 품질저하의 문제점이 존재하는 것으로 분석되었다. 2) 상기의 문제점을 바탕으로 원가상승에 대한 문제, 공기지연에 대한 문제, 품질저하의 문제에 대해 타당성 분석 차원의 개선방안을 제시하였다. 3) 해외 플랜트 공사에 있어 상기에서 분석한 문제점 및 개선방안을 준용할 수 있는 사업 타당성 분석 프로세스를 단계 별로 제시하였다.

• 한국건설관리학회논문집
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• 제9권6호
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• pp.216-224
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• 2008

최근 들어 선진국에서는 LCC에 대한 평가 제도를 활발히 활용 중에 있고, 우리나라는 생애주기비용을 절감하기 위하여 그 제도를 신규로 도입하고 있다. 그리고 새로운 정부공사 발주방식인 “기술제안형 입찰방식” 도입에 따라 시설물의 LCC 평가가 필요하게 되었다. 현재 우리나라는 BTL과 턴키 프로젝트에서 LCC를 평가하고 있으나 평가요소와 기준이 불명확하여 평가에 어려움을 겪고 있고, BTL과 턴키를 제외한 공공건설사업은 LCC 평가가 이루어지지 않고 있는 실정이다. 따라서 본 연구에서는 LCC를 체계적이고 객관적인 평가를 위한 평가기준 및 활용방안을 제시하고자 한다. LCC 평가기준을 도출을 위한 연구방법 및 주요결과는 다음과 같다. (1) 기존의 평가기준을 분석하여 평가기준의 필요성 및 문제점을 파악하고, (2) 보고서분석 및 설문조사를 통하여 LCC 평가기준을 도출하였고, (3) 실무에서 합리적으로 활용할 수 있도록 활용방안 및 평가방법을 제시하였다.