• 한국건설관리학회논문집
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• 제21권2호
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• pp.30-38
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• 2020

국내 공공 건설공사 공사비 수준이 시장 상황을 합리적으로 반영하지 못하고 있는 인식이 산업 전반에 널리 펴져 있는 가운데, 총사업비 관리 프로세스 상의 과도한 공사비 조정이 공사비의 적정성 미확보에 대한 핵심 원인 중 하나로 지목되고 있다. 정부는 건설 프로젝트 총사업비 산정 및 관리 프로세스에서 삭감 위주의 정책을 펼치고 있으며, 산업계에서는 예정가격 대비 낙찰가격의 수준은 매우 낮다는 인식이 일반적이다. 본 연구에서는 총사업비 관리 프로세스를 개선하기 위한 목적으로 총사업비 산정 및 관리 프로세스에 대한 분석을 수행한다. 입·낙찰 방식별 총사업비가 단계별 조정되는 과정을 분석하고, 사업구상 단계 대비 낙찰가격의 수준에 대한 정량적 비교분석 결과를 도출한다.

• 한국관광식음료학회지:관광식음료경영연구
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• 제8권
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• pp.21-33
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• 1997

This study reviews the scientific management theories and discusses those theories within the food service industry. By providing the principles and the practical implications of the theories on the food service industry, this study tries to identify their philosophies and usefulness to the industry so that the managers in the industry use them in their dylmanic operations. In the fastly changing modern globalized world, we now face a situation where it's becoming more and more difficult to mange a restaurant business. In order to build a food industry business that can maintain a continuous development in today's business environment, one will have to apply the professional management theory in a cost-reduce strategy. It is more important though to have managers, organization members, in short, any person who can work to be motivated in accomplishing these two major issues-income increase and cost reduction. In this erawhere it's getting so difficult for researches on possible strategies for these business managers to overcome their difficulties. It is for certain that in the upcoming second millenium the travel and tourism industry will be one of the world's biggest industry worldwide. Korea's hotel industry has developed since the 1988 Seoul Olympic Games and has shown great amount of competition within the same business. Thus managers have become acquainted with the "know-how" strategy and the practical and scientific managemnet theories were introduced. This helped not only to increase income but also to maximize profit. However, rather than concentration on the "Hard-ware" aspect "Soft-ware" related professional management strategies were developed along with professionalism and human service were emphazied. As such, the actual cost of food and beverages are for the hotel industry business managers the biggest shortterm expense item. Due to the natural state of food items, there is a great chance of "Loss" in preservance, and this is the reason it is complicated to effectively maintain food. As a consequence, very often, the failure to managea hotel or restaurant depends on the capability of the food and beverage preservance mangement: on how they are able to manage effectively the original price of food and beverage. Finally, the main problem of the original price management of food and beverage in Korean hotels are: a) No fixation of set price b) The difficulty to calculate the price difference between a set price and an original price. c) Lack of professinalism in managing the food and beverage original price. d) Lack of perception of the highest ranking management personnels. So as to reform these matters it is necessary to : a) Reform on the management accounting system b) Emphasize to the people in charge on the idea of original price management c) Reinforce original price mangement prevention and assurance of indepedent inspection rights d) Reat manpower

• 한국콘크리트학회:학술대회논문집
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• 한국콘크리트학회 1999년도 학회창립 10주년 기념 1999년도 가을 학술발표회 논문집
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• pp.15-218
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• 1999

Concrete is the most generous, universal main structural material. There is active study for processing quality, stable quality mangement. Especially, strength is basic factor of evaluating stability of concrete building. Regaining required strength and homogeneity is very important to get self-stability in building to evaluate another characteristic. Concrete strength is important to the quality management. But, result of hardened concrete's quality test is hardly reflected to works immediately. When required strength is not enough, it could bring out safe problem, economic and administrative cost. It is pointed out that problems from strength evaluation, so early evaluation of concrete quality is required. From the trend that accelerating high quality concrete development, improving the method of quality test and early evaluation measure is urgent project. Throughout this report, it is suggested the method with use of microwave to evaluate 28-days concrete strength.

• 산업공학
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• 제20권2호
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• pp.186-194
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• 2007

Recent deregulation of Korean electricity industry has made each power generation company pay more attention to maximizing its own profit instead of minimizing the overall system operation cost while guaranteeing system security. Electricity power generation problem is typically defined as the problem of determining both the on and off status and the power generation level of each generator under the given fuel constraints, which has been known as Profit-Based Unit Commitment (PBUC) problem. To solve the PBUC problem, the previous research mostly focused on devising Lagrangian Relaxation (LR) based heuristic algorithms due to the complexity of the problem and the nonlinearity of constraints and objectives. However, these heuristic approaches have been reported as less practical in real world applications since the computational run time is usually quite high and it may take a while to implement the devised heuristic algorithms as software applications. Especially when considering long-term planning problem which spans at least one year, the complexity becomes higher. Therefore, this paper proposes an explicit column generation algorithm using power generation patterns and the proposed algorithm is successfully applied to a Korean power generation company. The proposed scheme has a robust structure so that it is expected to extend general PBUC problems.

• 유기물자원화
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• 제21권2호
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• pp.56-62
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• 2013

유기성 폐기물은 더 이상 처리대상이 아닌 자원이며 이러한 자원화 방법 중의 하나인 퇴비화는 자원의 재활용적인 측면에서 가장 친환경적인 방법이라 할 수 있다. 퇴비화는 그 방법에 상관없이 발효공정과 숙성공정이라는 핵심적인 공정 또는 과정을 거치게 된다. 본 연구에서는 유기성 폐기물을 퇴비화 처리하는 핵심장치인 기존 발효 및 숙성공정의 문제점을 파악하고 이러한 문제점을 해결하기 위한 이동용 퇴비화 장치 개발에 관한 연구가 수행되었다. 실험에 사용된 반응용기는 회전되므로 교반 도중 이물질 등에 의해 중지되는 일이 없고, 혼합이 완벽하게 일어난다. 그리고 공기량을 조절함으로써 반응용기 내부의 온도를 균일하게 유지시킬 수 있으므로 미생물을 이용한 발효 및 숙성이 용이하다. 또한, 기존의 발효장치에 비해 경제성이 있으며 인적, 물적 관리비가 절감되고 유기성 폐기물을 이용한 퇴비제품을 대량 생산할 수 있다. 특히, 공간을 적게 차지하면서도 유기성 폐기물이 공기와 접촉하는 면적을 증대시킬 수 있게 됨과 더불어, 이동가능하게 된 퇴비화장치를 제공하는 효과가 있다.