• Journal of Korea Water Resources Association
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• v.36 no.1
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• pp.61-74
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• 2003

This study(II) apply to the A city by using the optimal rehabilitation model based on the deterioration prediction of the water distribution system proposed the study(I). The deterioration prediction model divides factors into 14 factors with digging and experiment and 9 factor without digging and experiment and calculate the deterioration degree. The application results of the deterioration prediction model show that a difference of the deterioration degree according to factor numbers is within 1~2%. Also, the model can predict the deterioration degree of each pipe without digging and experiment. The optimal rehabilitation model is divided into the optimal residual durability of each deterioration factor and budget constraint or not. The application result is as follow: the rehabilitation time and cost increase according to the increasing of the optimal residual durability. When compared the model with budget constraint and model without budget constraint, the former model increase the cost of total contents. In case of budget constraint, the increasing tendency is concluded that the pipe rehabilitation is executed in same budget every year in condition that every rehabilitation cost do not exceed the every year budget within the optimal residual durability.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.29 no.1D
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• pp.63-72
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• 2009

This study aims at establishing the decision-making support system for the highway assets, long-term performance presumption and evaluation of asset value, which are appropriate for Korea, and proposing the methods of the optimal engineering method and the timing decision for the preventive maintenance through the project evaluation, the optimization method and life-cycle analysis related to the highways. In order to supplement the current problem of the near-sighted budget management system, which chooses the maintenance place of the highway, depending on the level of the budget with fixed amount, the long-term required budget prediction system and the economy principle were introduced, so that the pavement agency can predict the level of the required budget, and it was aimed to develop the pavement asset evaluation system to maintain the performance of the highway with the minimum of the cost. In the use of the highway pavement asset evaluation system, to maintain the appropriate level of the pavement evaluation index, when the budget was efficiently established in the reference of the required maintenance budget for the chosen section of the highway in the year concerned, it was possible to analyze the most rational pavement maintenance budget. With this result, it is estimated to prevent the unnecessary waste of budget in advance, and through the development of the decision-making system for the long-term performance presumption and the asset value estimation of the pavement, it is expected to able to analyze the previous evaluation of the project related to the highway and the feasibility of introduction.

• Korean Journal of Construction Engineering and Management
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• v.24 no.2
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• pp.79-87
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• 2023

Given that most government contracts are based on a fiscal year, long-term continuing construction contracts require appropriate provisions as significant amounts of budget is supposed to be invested for several years. This study drew problems and improvements of the long-term continuing construction contracts by analyzing the contents of FGI and list of construction order. We found that a number of problems, such as the mismatch between laws and enforcement decrees, difference in calculating overheads due to the extension of construction period, many construction orders that are hard to see as budget efficiency and over investment in the final annual contract, were tangled up in the process. To solve the problems mentioned, we suggested several improvements as follows: (1) effect of total construction period and total amount should be guaranteed by a law, (2) it is suggested that the scope of long-term continuing construction contract is determined by a law, and (3) it should be clear about the calculation of overheads concerned with the extension of construction period as well as the estimation of construction period to prevent over investment in the final contract.

• Journal of Environmental Policy
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• v.14 no.2
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• pp.49-72
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• 2015

Forests in the upstream contributed to improve the quality of water resources for the residents downstream. However, upon structural examination of how the Han River Watershed Management Fund was spent, it became apparent that the fund was not spent toward forest management in the upstream. An additional budget must be allocated if the Watershed Management Committee is to contribute to the management of the upstream forests with such awareness. Therefore, the aim of the study was to assess the willingness to pay and to calculate of budget for forest management in the upstream for water quality improvement. Three hundred surveys on watershed beneficiaries were conducted using biased sampling method. The result was analyzed with conditional logit model and mixed logit model. Forest management, a target variable, was found to have statistical significance. Based on this result, the size of the expected budget was estimated to be minimum 20,526 million won to maximum 20,928 million won.

• Korean Journal of Construction Engineering and Management
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• v.12 no.4
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• pp.70-78
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• 2011

In case of long time progressive construction work, we need contract sum adjustment due to escalation for a period of works and the process of applying, consistent and obvious criterion is required. In this study, it were attempted to figure out problem and study this rational improvement by giving examples based on core activities of escalation adjustment. Based on literature study and legal system analysis, we classified processes of contract sum adjustment for escalation and defined 20 core activities for each process. From this measured variable, we carried out case study by giving 37 examples of escalation. As a result of case study, problems of each process was found and we suggested rational improvement. As this study, providers will be able to waste budget and the other will be given smooth escalation adjustment.

• Proceedings of the Korea Technology Innovation Society Conference
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• 2017.11a
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• pp.311-328
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• 2017

최근 국가 R&D예산은 매년 지속적으로 증가하여 투자규모 세계 6위, 국내총생산(GDP)대비 세계 1위에 해당되며, 그 중 연구장비 구축의 투자규모는 매년 평균 6.4%정도로 주요 선진국에 비해 비교적 높은 수준을 기록하고 있다. 그러나 국가 R&D예산으로 구축된 연구장비의 대부분을 외산장비가 차지할 정도로 국산장비의 국내시장 점유 및 신규 진입 모두가 극히 저조한 실정이다. 실제 2015년 12월말, NTIS(National Science & Technology Information Service) 기준으로 지난 10년 동안 공공시장에 구축된 전체 50,271점 연구장비 중 국산은 불과 33%, 외산은 67%에 해당된다. 그 주요 원인으로는 국내 제조사의 기술력과 자체 개발제품의 미흡, 국내 장비산업의 재무구조 취약, 고가첨단장비의 제조 및 생산 부재 등이 거론되고 있으며, 이를 해결하기 위해선 국내 제조사가 생산하는 연구장비에 대한 공공시장의 수급 현황과 국내시장에 유통되는 국산장비의 경제성, 시장성 등을 종합적으로 분석하여 국내 연구장비 산업의 발전 전략을 도출하고, 국가 정책적 지원체계를 마련하는 것이 매우 중요하다. 따라서, 본 연구는 지난 10년간 한국 정부가 투자한 연구장비의 구축정보를 기반으로 국내 공공 시장을 제조국가, 제조사, 장비유형, 구축건수, 구축금액 등 다양한 측면에서 세분화한 후 제조사 및 장비유형별 시장규모(수요)와 시장점유의 수준(x-y)을 통계적으로 분석하고, BCG매트릭스 방법론과 마이클포터의 경쟁전략 이론을 적용하여 R&D정책 수립에 필요한 전략적 시사점 및 세부 방안을 도출하였다.

• Journal of Convergence Society for SMB
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• v.4 no.3
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• pp.33-39
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• 2014

The Purpose of this study is to investigate the problems arising during the investment decision making on maintaining and improving Manufaturing information systems. The detailed problem considered in this study is to determine the priorities of various investment alternatives on improving Manufacturing systems. For this purpose, this study suggests a systematic procedure in which the analytic hierachy process is used to fix the important weights of alternatives, together with a normalization step, and then an integer programming model to select the optimal set of alternatives that maximize the total priority while satisfying the allowable budget and the time limitation.

• 월간 기계설비
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• s.241
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• pp.34-37
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• 2010

공정거래위원회가 지난해 말 20개 건설업체를 대상으로 하도급 현장조사를 실시한 결과 조사대상 업체 모두 법위반 행위를 하고 있음을 적발, 약 4억원의 과징금 부과와 총 51억원 상당의 위반금액을 936개 관련 하도급업체들에게 지급하도록 조치했다. 확인된 법위반 유형으로는 $\triangle$부당하게 하도급대금 결정 $\triangle$하도급대금 지연이자 미지급 $\triangle$어음할인료 수수료 미지급 $\triangle$선급금 지급 위반 $\triangle$지급보증 불이행 등이 대부분이다. 특히, 하도급공사 입찰시 입찰최저가가 이미 자기 실행예산보다 낮음에도 불구하고 이보다 더 낮추기 위해 금지되어 있는 재입찰 방식이나 추가 인하 수단을 동원한 바 있고, 자기 회사는 공공기관 등 발주자로부터 현금으로 공사대금을 받고도 하도급업체들에게는 현금이 아닌 장기어음 등으로 지급하는 등의 사례가 적발됨으로써 나쁜 관행이 여전히 만연되고 있는 것으로 나타났다.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.35 no.6
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• pp.1405-1412
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• 2015

In Korea, public infrastructure projects employ "long term continuation (LTC) contracts," which require budgets to be reevaluated and re-appropriated annually throughout the multi-year life of the project. However, such contracts also make it susceptible to frequently changing government policies, in which budgets required for existing projects are allocated to new projects and thus does not provide a consistent stream of capital to multi-year projects. Each year, the KEC needs to attain government funds for construction of its multiple highway construction sites. Because it is difficult to know the amount that may be actually appropriated to KEC in a given year, it is in turn difficult to anticipate and provide sufficient funds necessary for construction to run smoothly and continuously. The lack of a good logic for appropriation has resulted in projects having a skewed distribution of capital. To get better budget appropriations from the central government, the KEC first needs a systemized approach that rationalizes the annual construction capital optimally required for its individual sites. The goal of this research was to devise a way that allows the KEC to determine and calculate the optimal construction costs that would be required for its individual construction sites on an annual basis. Both the optimal progress rate and the essential work types were assessed through a workshop with 24 professionals (KEC employees and contractors) who had extensive experience in KEC projects and also were currently working in these projects.

• Korean Journal of Construction Engineering and Management
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• v.12 no.6
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• pp.65-78
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• 2011

Construction business, which is complex and long-term business, requires accurate estimation and verification in construction costs and payment procedure from project planning to the completion of construction phase. And more importantly, it is necessary to investigate and determine the risk factors related to construction costs during the entire process including design planning, construction drawings, and quantity calculating. But, currently, it is not seem to be adequate to cope with the risk and increased construction costs against the operational budget in terms of actual costs when screening and estimating the bidding cost of public apartment. Therefore, this study selected and analyzed 40 sites' report of construction completion account from 2004 to 2010 focused on the adequacy on the modification of contract and design planning and on the complication of the budget in the beginning of the project. This study deducted various risk causes and results by analyzing actual costs according to year, architectural area, region, construction cost and sale/lease classification. We could find out construction risk according to annual variation of government policy and economy, and also deducted risk items by construction characteristic according to region and architectural area. Study result, we first found out the problems of lowest price award system according to the construction costs. The weight of the cost increase risk was analyzed that subcontract and material costs are very high. Roof and tile work were analyzed highly in subcontract cost risk and reinforcing bar and cement were analyzed highly in material cost risk, among direct construction cost. Finally, this study results could be used in comparing the categories of the construction costs made by specific construction process, belonging to the construction costs, with the operational budget made in the beginning of the project that can enable to grasp unpredictable risks over the construction costs and making quantitative analysis for it through analyzing the range of fluctuation and variations led by the fluctuations in the actual construction costs.