• Title/Summary/Keyword: competitive bidding

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Competitive Advantage Strategy of Construction Duration by SWOT Analysis (SWOT 분석을 통한 건설기업의 공기경쟁력 강화 전략)

  • Kim, Sun-Kuk;Lee, Hyun-Soo;Ryu, Han-Guk
    • Korean Journal of Construction Engineering and Management
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    • v.7 no.2 s.30
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    • pp.109-117
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    • 2006
  • Recent rapid changes such as construction market reduction, lowest bidding system of construction cost, five days per week system, and post-construction sale system are inevitably accelerating the competitiveness between construction companies. Those rapid changes of construction environment require construction companies, which are main participants of construction industry, to adapt to the changes and more to lead new construction environment. However, there are many construction uncertainties which could delay construction completion. Without the proper identification of construction uncertainties, structured strategy establishment and management of construction schedule, the competitive advantages of construction duration could not be made. Thus this paper limited the research boundary to construction duration competitiveness instead of general strategy establishment. Recognizing the importance of proper calculation of construction duration, requirements of construction duration reduction and limited researches related to construction schedule strategy, we established the 25 strategies for construction duration competitivenss by internal and external construction environment analysis and SWOT analysis, and then elicited the first considerations to accomplish the strategies through concensus of all the staffs by questionnaire, brainstroming and face-to-face interviews.

Econometric Study on Forecasting Demand Response in Smart Grid (스마트그리드 수요반응 추정을 위한 계량경제학적 방법에 관한 연구)

  • Kang, Dong Joo;Park, Sunju
    • KIPS Transactions on Computer and Communication Systems
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    • v.1 no.3
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    • pp.133-142
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    • 2012
  • Cournot model is one of representative models among many game theoretic approaches available for analyzing competitive market models. Recent years have witnessed various kinds of attempts to model competitive electricity markets using the Cournot model. Cournot model is appropriate for oligopoly market which is one characteristic of electric power industry requiring huge amount of capital investment. When we use Cournot model for the application to electricity market, it is prerequisite to assume the downward sloping demand curve in the right direction. Generators in oligopoly market could try to maximize their profit by exercising the market power like physical or economic withholding. However advanced electricity markets also have demand side bidding which makes it possible for the demand to respond to the high market price by reducing their consumption. Considering this kind of demand reaction, Generators couldn't abuse their market power. Instead, they try to find out an equilibrium point which is optimal for both sides, generators and demand. This paper suggest a quantitative analysis between market variables based on econometrics for estimating demand responses in smart grid environment.

The Development of the Transmission Marginal Loss Factors with Consideration of the Reactive Power and its Application to Energy Spot Market (무효전력을 고려한 한계송전손실계수 산정 방법론 개발 및 현물시장에의 적용)

  • 박종배;이기송;신중린;김성수
    • The Transactions of the Korean Institute of Electrical Engineers A
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    • v.52 no.7
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    • pp.429-436
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    • 2003
  • This paper presents a new approach for evaluating the transmission marginal loss factors (MLFs) considering the reactive power. Generally, MLFs are represented as the sensitivity of transmission losses, which is computed from the change of the generation at reference bus by the change of the load at the arbitrary bus-i. The conventional evaluation method for MLFs uses the only H matrix, which is a part of jacobian matrix. Therefore, the MLFs computed by the existing method, don't consider the effect of the reactive power, although the transmission losses are a function of the reactive power as well as the active power. To compensate the limits of the existing method for evaluating MLFs, the power factor at the bus-i is introduced for reflecting the effect of the reactive power in the evaluation method of the MLFs. Also, MLFs calculated by the developed method are applied to energy spot markets to reflect the impacts of reactive power. This method is tested with the sample system with 5-bus, and analyzed how much MLFs have an effect on the bidding/offer price, market clearing price(MCP), and settlement in the competitive energy spot market. This paper compared the results of MLFs calculated by the existing and proposed method for the IEEE 14-bus system, and the KEPCO system.

The Application Improvement Plan of Polymer Insulators for Overhead Transmission Lines (가공송전선로 폴리머애자 적용 개선 방안)

  • Min, Byeong-Wook;Kim, Tai-Young;Choi, Jin-Sung;Shin, Seung-Bum;Lee, Si-Young;Won, Gyeong-Bae
    • Proceedings of the KIEE Conference
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    • 2011.07a
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    • pp.465-466
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    • 2011
  • The global trend is to make transmission lines light weight and compact by using insulators and other equipment made of advanced materials. In Korea, the diversification of insulators supply route has begun in order to obtain price competitiveness. In May 1999, polymer insulators were finally introduced for the first time and installed to the 154kV transmission lines. After that, the construction and procurement standards were made and domestic polymer insulators were developed. And then, foreign and domestic manufacturers were registered in KEPCO as qualified insulator suppliers. As of 2010, purchasing polymer insulators by competitive bidding from foreign and domestic manufacturers has been possible. For this reason, it was decided to reduce the use of porcelain insulators and increase the use of polymer insulators taking the installation price into consideration

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Effect of Generation Capacity Constraints on a Mixed Strategy Nash Equilibrium in a Multi-Player Game (다자게임에서 발전력제약이 복합전략 내쉬균형에 미치는 영향)

  • Lee, Kwang-Ho
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.57 no.1
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    • pp.34-39
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    • 2008
  • Nash Equilibrium(NE) is essential to investigate a participant's bidding strategy in a competitive electricity market. Congestion on a transmission line makes it difficult to compute the NE due to causing a mixed strategy. In order to compute the NE of a multi-player game, some heuristics are proposed with concepts of a key player and power transfer distribution factor in other studies. However, generation capacity constraints are not considered and make it more difficult to compute the NE in the heuristics approach. This paper addresses an effect of generation capacity limits on the NE, and suggest a solution technique for the mixed strategy NE including generation capacity constraints as two heuristic rules. It is reported in this paper that a role of the key player who controls congestion in a NE can be transferred to other player depending on the generation capacity of the key player. The suggested heuristic rules are verified to compute the mixed strategy NE with a consideration of generation capacity constraints, and the effect of the generation constraints on the mixed strategy NE is analyzed in simulations of IEEE 30 bus systems.

A Case Study on Implementing SCM to Textile Fashion Industry as Small Business (섬유패션 중소기업의 SCM 사례 연구 - 커튼업체를 중심으로 -)

  • Shin, Sang-Moo;Choe, Jin-Hyeok
    • Journal of Fashion Business
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    • v.12 no.5
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    • pp.155-167
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    • 2008
  • With globalization and competitive market environment, companies realize how marketing channels are important in order to survive and succeed the business. The importance of information management among channels is getting increased, and is needed for SCM. Nevertheless having hard situation to implement SCM, SCM for textile fashion industry engaged in small business mostly is the way to break through the difficulty on so many channels to go through from fiber to retail. Therefore, the purpose of this case study to L firm by using questionnaire based interviewing method was to investigate how textile fashion small business can implement the SCM with their own differentiated strategy differed from a large corporation. L firm conducted SCM-ISN (Information Service Network) under the restructuring project. So they could use electronic bidding system via internet and have information sharing with their partners such as retailers. Therefore, they could expand market share to Seoul and reduce inventory and manage their customer more effectively than before.

Beef Usage and Dietitians' Perceptions of Beef Quality in Institutional Foodservice (단체급식소 쇠고기 이용 실태 및 영양사의 쇠고기 품질에 대한 인식)

  • Lee, Kyung-Eun;Joo, Shin-Youn;Yim, Kyung-Sook;Lee, Hong-Mie
    • Journal of the Korean Dietetic Association
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    • v.23 no.2
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    • pp.129-142
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    • 2017
  • The purpose of this study was to compare the usage of beef and foodservice managers' perceptions of beef quality by foodservice type. A survey was conducted on 546 dietitians, and 499 acceptable responses were used for data analysis. By weight, pork was the most used meat in foodservice institutions, followed by poultry and beef. More than half of the foodservices selected meat suppliers by competitive bidding. Approximately 85.8% of the respondents used Hanwoo beef, followed by Australian beef and Youku beef. Beef type differed significantly by foodservice type (P<0.001): most of the schools and social welfare facilities used Hanwoo beef, whereas most hospitals and business/industry operations used Australian beef. When purchasing beef, safety of beef was rated the most important, while eco-friendliness was rated the least important. Most of the dietitians understood that marbling is one of the determinants of the beef quality, but were not aware of other components. Dietitians that selected Hanwoo and Youku beef were more satisfied with quality, taste, nutrition, freshness, country of origin, package, customer, preference, and availability for various menus than those who used imported beef. Dietitians who used Hanwoo beef were the most satisfied with country of origin, whereas the others were the most satisfied with safety. Since the dietitians are in charge of planning menus and selecting meat suppliers at foodservice institutions, they should make knowledgeable decisions by understanding meat supply systems and quality of beef.

The Business Strategy Innovations of the Top Design Firms in Global Design & Engineering Markets (해외 선진 설계회사의 사업구조 혁신 동향 분석)

  • Jang Hyoun-Seung;Choi Seok-In;Hyun Joon-Sik
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.6 s.22
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    • pp.226-234
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    • 2004
  • Dynamic nature of the A/E/C industry, rapidly changing global market environment, and lowest cost competitive bidding make it difficult to survive in global engineering markets. To understand of the global design&engineering market, a case study has been undertaken. The top 150 global design forms represented in the ENR(Engineering News Record) from 1995 to 2003 are classified three groups for the case study, First group is the firms that its rank is getting raised from 1995. Second group is the firms keep holding its rank from 1994 until 2003. Third group is the firms that its rank has gone down from 1995 until 2003. However, finding key factors and changing business strategies of successful top design fm are the fundamental goals in this paper, After examined case study, this paper concludes and suggests that professionalization, M&A strategies, patrons of government, and academic supporting are needed to be succeeding in the global design & engineering industry.

Improvement plan going into other countries of domestic construction companies (국내 건설업체의 해외진출 활성화 방안)

  • Park, Hwan-Pyo;Shin, Eun-Young;Lee, Kyo-Sun
    • Korean Journal of Construction Engineering and Management
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    • v.9 no.6
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    • pp.225-234
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    • 2008
  • The engineering competitiveness of domestic construction companies is 70$\sim$80% of advanced countries. And Korean' companies fall behind China and South-East Asia in a competitive price. Recently, there are increased the amount of overseas order received in Korean construction companies. But, there is not enough the supporting policy of government. Therefore, this research compared and analyzed the competitiveness of domestic construction companies throughout benchmarking support system of overseas construction in advanced companies. Such research was obtained through business trip & consultation with related specialists for the difficulties of domestic companies in advancing into overseas market. This research provided governmental plans to advance into overseas market. First, this research provided assurance system and connected plan of ODA(Official Development Assistant) in construction. Second, this research suggested the improvement of overseas marketing survey and overseas construction marketing center. Third, this research provided the support system of bidding information and the training system of professionals.

A Study on the Use of Parking Lots and Improvement Methods of Land Supply in Public Development Zones (공공개발지구 내 주차장용지의 이용실태와 토지공급방법 개선방안 연구)

  • Park, Chang Yul;Kim, Si Jin
    • Land and Housing Review
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    • v.10 no.4
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    • pp.13-30
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    • 2019
  • Parking lot within housing site contains public interest of relieving parking space shortage problem and subject to public restriction. If auctioned off at higher price by excessive competition in general competitive bid for land bidders, the development of parking lot will be made against its original purpose supply. The core issue is that a bid price is quite often to be blown out of proportion by 150%~ 250% due to extreme competition and, could face serious problem if a winning bidder runs sale business. If it is rental business, although about 30% of the total floor space of the whole building to be used as neighborhood facilities, too high winning bid price cause to lose transparency. In case of sale at aggregate buildings, most business operators would sell 30% of the neighborhood facilities, spare the parking lot and manages thereof separately. According to Aggregate Buildings Act, neighborhood facilities are allowed for individual registration and ownership of parking lot by business operator or designated person by business operator. In this case, the parking lot becomes 70% of the total floor space of the whole building and 70% of the land share which makes the mortgage very valuable and easier for business operator to get financial loan. There used to be many cases such as owners of neighborhood facilities (aggregate buildings partial owners) who run parking lot to repay their loan running parking lot to repay loan, but found that very tough and reached auction and relatively disadvantaged. For parking lot within housing site, it is recommend to exclude the public factors that land has and take into account of public restriction in area (housing site). Business opportunity for operators and protection of property rights for buyers in aggregate buildings, land supply method is recommended to replace from highest bid method into draw or private contract. In terms of price, supply at estimated price (construction price) and restriction on usage (Co-ownership of parking lot) proposals are submitted.