• 한국건설관리학회:학술대회논문집
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• 한국건설관리학회 2006년도 정기학술발표대회 논문집
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• pp.98-102
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• 2006

정부는 낙후된 학교환경을 개선하고 미래교육 수요의 변화에 효과적으로 대응하기 위해 교육환경개선사업 계획을 수립하여 추진 중에 있다. 그러나 교육시설물 투자 우선순위를 고려하지 않은 교육환경개선사업은 국가 재정의 낭비를 초래 할 수 있다. 본 연구는 교육시설물의 투자 우선순위를 도출하기 위해 충청남도 소재 초 ${\cdot}$ 중 ${\cdot}$ 고등학교의 교육시설물 투자실적 데이터 조사 및 분석을 실시하였으며, 교육환경개선사업 우선순위 Item 도출을 위해 충청남도 소재 초 ${\cdot}$ 중 ${\cdot}$ 고등학교의 학생 ${\cdot}$ 학부모 ${\cdot}$ 교직원 및 교육시설물관리 담당자들에게 AHP 설문조사 및 분석을 실시하였다. 연구 결과 교육시설물의 투자비용 실적과 과부족 현황 파악을 분석하였으며, 이를 바탕으로 향후 투자 시 사용자 만족도가 높아질 수 있는 우선순위 Item을 발굴하였다. 본 연구의 결과는 향후 교육시설물 투자 시 사용자 만족도 향상 및 미래지향적 학교를 위한 기초 자료로 활용될 수 있을 것이다. 이를 통해 국가예산의 효율적인 집행과 함께 국가예산의 중복투자를 줄이는데 효과적인 적용을 기대해 볼 수 있다.

• 한국시스템다이내믹스연구
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• 제2권2호
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• pp.25-40
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• 2001

This paper describes the forecast of power plant construction in a competitive korean electricity market. In Korea, KEPCO (Korea Electric Power Corporation, fully controlled by government) was responsible for from the production of the electricity to the sale of electricity to customer. However, the generation part is separated from KEPCO and six generation companies were established for whole sale competition from April 1st, 2001. The generation companies consist of five fossil power companies and one nuclear power company in Korea at present time. Fossil power companies are scheduled to be sold to private companies including foreign investors. Nuclear power company is owned and controlled by government. The competition in generation market will start from 2003. ISO (Independence System Operator will purchase the electricity from the power exchange market. The market price is determined by the SMP(System Marginal Price) which is decided by the balance between demand and supply of electricity in power exchange market. Under this uncertain circumstance, the energy policy planners such as government are interested to the construction of the power plant in the future. These interests are accelerated due to the recent shortage of electricity supply in California. In the competitive market, investors are no longer interested in the investment for the capital intensive, long lead time generating technologies such as nuclear and coal plants. Large unclear and coal plants were no longer the top choices. Instead, investors in the competitive market are interested in smaller, more efficient, cheaper, cleaner technologies such as CCGT(Combined Cycle Gas Turbine). Electricity is treated as commodity in the competitive market. The investors behavior in the commodity market shows that the new investment decision is made when the market price exceeds the sum of capital cost and variable cost of the new facility and the existing facility utilization depends on the marginal cost of the facility. This investors behavior can be applied to the new investments for the power plant. Under these postulations, there is the potential for power plant construction to appear in waves causing alternating periods of over and under supply of electricity like commodity production or real estate production. A computer model was developed to sturdy the possibility that construction will appear in waves of boom and bust in Korean electricity market. This model was constructed using System Dynamics method pioneered by Forrester(MIT, 1961) and explained in recent text by Sternman (Business Dynamics, MIT, 2000) and the recent work by Andrew Ford(Energy Policy, 1999). This model was designed based on the Energy Policy results(Ford, 1999) with parameters for loads and resources in Korea. This Korea Market Model was developed and tested in a small scale project to demonstrate the usefulness of the System Dynamics approach. Korea electricity market is isolated and not allowed to import electricity from outsides. In this model, the base load such as unclear and large coal power plant are assumed to be user specified investment and only CCGT is selected for new investment by investors in the market. This model may be used to learn if government investment in new unclear plants could compensate for the unstable actions of private developers. This model can be used to test the policy focused on the role of unclear investments over time. This model also can be used to test whether the future power plant construction can meet the government targets for the mix of generating resources and to test whether to maintain stable price in the spot market.

• 한국콘텐츠학회논문지
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• 제12권1호
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• pp.68-79
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• 2012

한국은 경제 부흥을 꾀하기 위해 1980년대 말부터 도로시설물 건설을 확대해 왔다. 그 결과, 2010년 이후부터는 시설물의 보수, 보강 수요가 급증할 것으로 예측된다. 따라서 제한된 예산을 가지고 사용자의 만족도를 높이면서 시설물의 관리 기술을 혁신하기 위해 자산관리정보시스템을 연구하고 있다. 본 연구는 터널시설물의 유지관리를 대상으로 서비스 수준을 평가하는 항목을 제시하는 내용으로서, 이를 위해 사용자와 관리자를 구분하여 평가항목의 중요도에 대해서 설문조사를 실시하였다. 설문조사 결과를 토대로 Satty가 제시한 AHP(Analytical Hierarchy Process) 기법을 사용하여 평가항목들의 상대적 중요도를 파악하였다. 사용자관점에서의 중요도는 안정성-이동성-접근성-편리성-관리 효율성-쾌적성-지역 활성화-환경성-정보성 순서로 파악되었다. 또한 관리자관점에서의 중요도는 안정성-이동성-접근성-환경성-지역 활성화-편리성-관리 효율성-정보성-쾌적성 순서로 파악되었다. 이는 도로가 갖는 가장 기본적인 기능인 이동성보다 터널시설물의 안전성에 대한 관심이 더 높다는 것을 의미한다. 따라서 터널시설물의 유지관리 투자계획을 수립할 때 안전성을 확보할 수 있도록 보다 많은 관심과 노력을 기울려야 할 것으로 사료된다.

• 한국도로학회논문집
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• 제15권3호
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• pp.169-176
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• 2013

PURPOSES : Lots of criticism such as over/duplication investment, inconsistency of the policies among local governments and national plans etc. has been aroused due to the policy of supply-driven construction for transportation facilities. Recently, according to the environmental-friendly transportation policy, the investment of railroad has been expanded gradually, however the duplication with existing road facility makes it difficult to construct railroad. Thus it is necessary to evaluate the interrelationship between new project and existing facilities in the planning stage. However the method and the criteria for analyzing the duplication and over-investment of projects are not established in the manual, thus the feasibility of these projects are carried out from the economic point of view. METHODS: First, It reviewed about interrelationship criteria(domestic, overseas) and proposed implications and this study directions. Next, It developed the methods of evaluating independency, competitiveness and complementarity. RESULTS : In this study, the methods of evaluating independency, competitiveness and complementarity etc. are suggested to analyze the interrelationship between transportation facilities. The case study was carried out to examine the applicability of the methods. CONCLUSIONS: The methods raise rationality of decision-making compared to existing one. In the future, these methods are introduced into the manual of pre-feasibility study and feasibility study, more efficient decision-making and investment are expected.

• KIEE International Transactions on Power Engineering
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• 제5A권3호
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• pp.260-268
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• 2005

This paper proposes an improved investment pnonty decision method of facilities considering the reliability of distribution networks. The proposed method decides an investment order of the facilities combining, by fuzzy rules, the investment priority decision by KEPCO and that by reliability evaluation indices. The reliability evaluation indices are SAIFI (System Average Interruption Frequency Index) and SAIDI (System Average Interruption Duration Index). The reliability analysis method of distribution networks applied in this paper utilizes the analytic method, where the used reliability data is the historical data of KEPCO. Particularly, we assumed that the failure rate increases as the equipment ages. To verify the performance of the proposed method, we applied it with the planned projects to reinforce the weak electrical facilities in KEPCO in 2004. The evaluation result showed that, under a limited budget, the reliability of KEPCO in the Busan region using the proposed method could be enhanced if used rather than the conventional method typically in place. Therefore, the results verify that the proposed method can be efficiently used in the actual priorities method for investing in the electrical facilities.

• KDI Journal of Economic Policy
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• 제36권4호
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• pp.103-133
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• 2014

응급의료시설은 해당 지역의 보건의료환경을 결정하는 중요한 요인이다. 최근 양질의 응급의료시설 확충을 위해 국가재정 투입의 사회적 수요가 증가하고 있으며, 효율적 재정투입을 위해 관련 정책에 대한 과학적인 평가가 요구된다. 이러한 취지에서 본 연구는 응급의료시설 확충의 경제적 가치를 추정하기 위한 체계적인 방법을 모색하고자 한다. 응급의료시설의 정량적 성과지표인 예방가능사망자 수를 추정하는 방법을 실증적으로 분석하며, 이 성과를 경제적 가치로 전환하기 위해 경제학적 관점에서 응급사망 1인당 사망비용을 추정한다. 또한 본 연구의 결과를 실제 사례에 적용해 봄으로써 국가재정사업 평가에서의 활용 가능성을 살펴보았다. 과학적이고 체계적인 방법에 대한 연구와 응용은 지역 간 의료자원의 불균형을 완화시키고 국가재정의 효율성을 제고시키는 데 기여할 것으로 판단된다.

• Journal of Nutrition and Health
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• 제36권10호
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• pp.1083-1093
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• 2003

Efficient financial management is a critical factor in achieving school foodservice goals. The objective of this study was to suggest efficient financial management practices in secondary school foodservices. In pursuit of this objective, we first identified performance indexes for measuring the success of financial management. Second, we suggested financial management standards, financial data classification methods and a report system. Last, we analyzed operating ratios with the financial data of self-operated and contract-managed school food services. The data were collected through an open-ended questionnaire from 10 middle/high school foodservices in Seoul and Kyeonggi Provincial during on-sites visits and interviews with dieticians and managers. Student participation, sales goals, re-contract frequency and number and cost of disaster loss were identified as the performance indexes for financial management. Income statements were compiled by identifying and classifying financial data. Total revenues consisted of subsidies, meal sales, other revenue and interest. Expenditures consisted of purchased food, salaries and wages, utility costs, office supplies, kitchen supplies, purchased services, company overhead indirect costs, facility investment and maintenance, facility usage expenses, employee benefits and miscellaneous. Mean price of a meal was 2,326 won at self-operated foodservices when the subsidies were included as revenues and 2,360 won at contract-managed foodservices. When including the subsidies as revenues, the operating ratios of self-operated foodservice showed that the food cost percentage was 66.9％, labor cost 23.2％, operation cost 9.9％ and profit 0％. The correspond figures at contract-managed foodservices were 57.6％, 21.5％, 15.3％, and 5.5％, respectively. Food costs in self-operated foodservices was significantly higher than that for contract-managed foodservices, however, facility investment and maintenance and facility usage expenses at self-operated foodservices was significantly lower than those for contract-managed foodservices. Based on this study, the methodology and classification system of financial data was found to be applicable to assess the financial structure of school foodservices.

• 대한산업공학회지
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• 제36권1호
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• pp.42-51
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• 2010

The semiconductor industry is highly capital and technology intensive. Technology advancement on circuit design and process improvement requires chip makers continuously to invest a new fabrication facility that costs more than 3 billion US dollars. Especially major semiconductor companies recently started to discuss 450mm fabrication substituting existing 300mm fabrication of which facilities were initiated to build in 1998. If the plan is consolidated, the yield of 450mm facility would be more than doubled compared to existing 300mm facility. In steps of this important investment, facility layout has been acknowledged as one of the most important factors to be competitive in the market. This research proposes a new concept of semiconductor facility layout using hexagonal floor plan and its compatible material flow pattern. The main objective of this proposal is to improve the productivity of the unified layout that has been popularly used to build existing facilities. In this research, practical characteristics of the semiconductor fabrication are taken into account to develop a new layout alternative based on the analysis of Chung and Tanchoco (2009). The performance of the proposed layout alternative is analyzed using computer simulation and the results show that the new layout alternative outperforms the existing layout alternative, unified layout. However, a few questions on space efficiency to the new alternative were raised in communication with industry practitioners. These questions are left for a future study.

• 상하수도학회지
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• 제29권4호
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• pp.503-510
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• 2015

The objective of this study is to analyze the investment adequacy of the projects implemented according to the master plan on sewerage rehabilitation at Seoul. The planned and actually implemented ratio of invested money on sewage treatment plants (STPs) to sewers were compared in two temporal periods. Though the planned ratio of investment on STPs to sewers was 50:50 (in 2009-2020), the actual implemented ratio in 2009-2013 was 34:66. Until 2020, the greater investment ratio on STPs to sewers should be made considering the necessity of coping with stricter legal compliance on advanced treatment, stormwater treatment and so on. The priority of the planned and partially implemented projects among four STPs and at each STP was evaluated. Considering only the performance indicator of reduced load of BOD, T-N, T-P per the capacity of each STP facility, the performance among four STPs was shown as Jung-Rang>Tan-Cheon>Seo-Nam>Nan-Ji. The reverse order of the performance results in the past may be considered for future investment priority, but the efficiency of operation implemented at each STP, deteriorated status of each STP, investment in the past and so forth should also be considered. As for the priority of projects conducted within each STP, projects related to legal compliance (such as advanced tertiary treatment, stormwater treatment, etc.) have highest priority. Odor-related project and inhabitant-friendly facility related projects (such as building park on STPs, etc.) has lower priority than water quality related projects but interactivity with end-users of sewerage should also be important.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 추계학술대회 논문집 전력기술부문
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• pp.258-260
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• 2005

Recently, it is focused on a methodology to estimate a order of precedence investment in distribution power system under competitive electricity market. This paper suggests methodology to evaluate the order as using a sensitivity of system interruption cost in distribution system regarding a failure rate of distribution components. In this paper, by using one of feeder in RBTS model, the order is assessed to compare valuation about sensitivity of interruption cost with valuation about sensitivity of estimated reliability indices. In conclusion, it is shown that results of precedence investment based on each methods are difference.