• The Transactions of The Korean Institute of Electrical Engineers
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• v.59 no.12
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• pp.2143-2149
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• 2010

Market price and curtailment amounts of the Demand Resource Market(DRM) are determined by competition between electricity consumers. An important aspect of the DRM involves the assessment of strategic behavior of participants for maximizing their profits. This paper presents economic equilibrium models for simulating imperfect competition among electricity consumers in the DRM and analyzes the models at Nash Equilibrium of Game Theory. The proposed demand functions and supply functions of DRM are based on the Demand Resource Market Rules in Korean electricity market. Simulation results show that the models are adequate for obtaining Nash Equilibrium of consumers' competitive curtailment.

• 월간 기계설비
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• no.4 s.189
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• pp.39-42
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• 2006

최근 정부계약제도는 하루가 다르게 변해가고 있습니다. 행정자치부에서는 지방정부출범 10년 맞이하여 지방자치단체의 특수성과 성격을 반영한 「지방자치단체를 위한 계약에 관한 법률」을 제정하여 올해부터 본격적인 시행에 들어갔으며, 국가계약제도 역시 정부가 추진하는 건설산업 경쟁력 강화 및 선진화 사업과 맞물려 최저가낙찰제도 확대, PQ 및 적격심사 제도의 개편, 각종 계약관련 하위 규정 통폐합 등 계약 및 입 · 낙찰제도 전반에 걸친 개편작업이 추진되고 있습니다. 본지는 이러한 정부계약제도의 급격한 변화의 흐름과 발맞추어 평소 회원사들로부터 자주 질의를 받았던 내용을 중심으로 정부시설공사입찰실무에(전문공사 50억 미만 적격심사 중심) 대한 내용을 3회에 걸쳐 게재 할 예정이오니 업무에 많은 활용 있으시기 바랍니다.

• 월간 기계설비
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• no.3 s.188
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• pp.52-61
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• 2006

최근 정부계약제도는 하루가 다르게 변해가고 있습니다. 행정자치부에서는 지방정부출범 10년을 맞이하여 지방자치단체의 특수성과 성격을 반영한『지방자치단체를 위한 계약에 관한 법률』을 제정하여 올해부터 본격적인 시행에 들어갔으며, 국가계약제도 역시 정부가 추진하는 건설산업 경쟁력 강화 및 선진화 사업과 맞물려 최저가낙찰제도 확대, PQ 및 적격심사 제도의 개편, 각종 계약관련 하위 규정 통폐합 등 계약 및 입∙낙찰제도 전반에 걸친 개편작업이 추진되고 있습니다. 본지는 이러한 정부계약제도의 급격한 변화의 흐름과 발맞추어 평소 회원사들로부터 자주 질의를 받았던 내용을 중심으로 정부시설공사입찰실무에(전문공사 50억 미만 적격심사 중심) 대한 내용을 3회에 걸쳐 게재 할 예정이오니 업무에 많은 활용 있으시기 바랍니다.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.820-821
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• 2007

'90년대 이후 세계의 전력산업은 효율성 향상 및 사회적 편익 증진을 위해 독점에서 경쟁체제로 전환되고 있다. 우리나라도 01. 4월 발전, 송배전 및 판매가 통합된 전력회사에서 발전부문을 분할하여 별도의 6개 발전회사로 분리했고, 전력거래소를 신설하여 변동비반영 전력시장을 개설하였다. 그러나 변동비반영 전력시장은 각 참여자들의 가격입찰을 허용하지 않고 있고, 수요측 가격입찰도 허용하지 않는 시장이다. 따라서 설비예비력, 운영예비력 등 예비력과 에너지 시장에서 수요자원의 참여가능성과 참여방법을 제시하고자 한다.

• Korean Journal of Construction Engineering and Management
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• v.11 no.2
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• pp.124-136
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• 2010

International construction market has been depressed significantly after 2000. Exclusive techniques and advanced construction management methods are desperately in demand so as to ensure the competitiveness in unlimited competition. Although public construction delivery system has been revised several times starting with introduction of the lowest bidding system in 1951, there has been no remarkable achievement whenever new system was introduced. This study analyzed the successful stories of developed countries like Europe, USA and Japan to settle successful rating system down and vitalize the best value system in Korea, which was introduced in October 2007. We constructed the bidder evaluation system for domestic situation, and designed the evaluation tool which is useful in utilization. Since this study were analyzed on only same systems of developed countries and domestic similar cases, this study is limited to typical construction in Korea. The study of specialized rating system in the field related should be followed.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.462-467
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• 2004

Design-build, which is defined as single source responsibility for design and construction, has been widely used in large public works since governmental formulation of measure for encouraging use of design-build in 1996. However, civic groups and small and medium sized enterprises are highlighting over-competition and unbalanced market shares of conglomerate in domestic design-bid market and insisting on decrease in the use of design-build and absorption into the lowest-price bidding. This study collected information about cost, schedule, quality, new technology adoption from 51 civil design-build projects and measured their performance.

• Korean Journal of Construction Engineering and Management
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• v.11 no.2
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• pp.94-105
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• 2010

Recently, resettlement problems of low income groups in the urban regeneration area have been issued in Korea because they have no capability to purchase (or lease) redeveloped housing (or apartment). There are several approaches for supplying affordable housing and one of these is the bidding system which can reduce construction cost. However, the lowest bidding system has many problems such as dumping and substandard quality. In this context, this study proposed bidding system based on technical proposal applying the concept of the lowest total combined bid price for optimization of bid price, reduction of construction cost and period, and maintenance of suitable quality. This bidding system embraces the best value and cost plus time concept on the basis of an improved lowest price bidding system. It consists of the following components: work unit based, project unit based, and period reducing technical proposals. The proposed bidding system for determining bidders are designed to evaluate the adequacy of each technical proposal in the order of the combined minimum price in an effort to effectively optimize bid prices and reduce the construction periods, as well as to maintain a minimum appropriate quality.

• Korean Journal of Construction Engineering and Management
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• v.17 no.5
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• pp.3-12
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• 2016

Recently government is set to expand its policy to promote technical proposal tendering in a dimension of technical competitiveness reinforcement. Because a variety of complicated techniques are applied in technical proposal tendering and variables could be occurred in terms of cost, schedule, constructability and others when techniques are reflected on design document collaboration management among participants is considered insignificantly. So the research would determine primary management factors and presents management direction for collaboration among participants. First action for this is categorization of hindrance factors to collaboration into five factors as 'Poor work processing', 'Communication cap among participants', 'Lack of understanding about technical proposal tendering', 'Difficulty of decision making' and 'Insufficiency in managing the work data'. Second correlation analysis is conducted between the categorized factors and participants according to tasks in technical proposal tendering to figure out the correlation degree of variables. If there is a strong correlation between variables, hindrance factor in that case regarded primary management factor to collaboration and finally management direction is presented at each task.

• Journal of Korea Port Economic Association
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• v.36 no.2
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• pp.19-36
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• 2020

The bidding phase for logistics outsourcing services is critical for both shippers and logistics companies. According to the logistics bidding phase, the shipper should provide logistics operation information to logistics companies to resolve uncertainty. In addition, the logistics company can win the contract volume that was placed in the bid by expressing their experience and know-how, and proposing to share the risks and benefits of the shipper's logistics operation. Therefore, it is necessary to examine the factors that can be identified during the bidding phase for logistics outsourcing and how these factors affect the satisfaction of logistics outsourcing services. Based on the factors identified in the preceding studies on logistics outsourcing partnership factors and those on logistics outsourcing determinants, a survey was conducted on experts engaged in logistics companies, performing logistics for domestic shippers and analyzed using Smart-PLS. This study presents the following implications. First, in the logistics bidding phase, the shipper should provide its logistics operation information to logistics firms to resolve uncertainties. Details An in-depth explanation of the operation details will be presented via the bidding presentation, and on-site tours of manufacturing plants and logistics centers should also be carried out if necessary. Second, in the bidding phase, logistics companies should appeal through proposals to their competitiveness, such as experience and knowledge of the logistics of the shipper, and also consider alliances with other logistics companies to supplement their insufficient logistics services. Third, logistics companies should make proposals to share profits and risks through logistics outsourcing during the bidding phase, propose accepting risks from environmental uncertainties of the shipper within its capacity to an acceptable extent, and share the benefits of carrying out the shipper's logistics.

• Proceedings of the KIEE Conference
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• 2001.07a
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• pp.507-508
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• 2001

Power transactions are considered as noncooperative game in that participants compete each other to win the bidding game, and as cooperative game in that they have to cooperate to apply the result of bidding game to the physically interconnected power system. This paper applies both noncooperative and cooperative game theories in analyzing the entire process of power transaction.