• Proceedings of the SAREK Conference
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• 2008.11a
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• pp.499-504
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• 2008

Our government will make a plan regulating the cooling limit temperature of the summer season to 26 degree and the heating limit temperature of the winter season to 20 degree for energy saving. Where, the key point of this politic pursuit can be the charge system on heating and cooling cost. We have suggested new cost allocation methodology as a worth evaluation method in the precedent study, and preformed the worth evaluation and cost allocation on four kind of warm air produced from a heating system as an example. In this study, we applied the suggested method to four kind of cooling air as an example, and preformed the worth evaluation and cost allocation on each cooling air. As a result, similarly to the precedent study, the more energy a customer saved, the more heating unit cost decreased, and the more energy a customer consumed, the more heating unit cost increased. From this analysis, we hope that the suggested methodology can offer a theoretical basis to the politic pursuit of government, and induce the spontaneous energy saving of consumers.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.23-30
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• 2001

The Financial Cost in construction industry today is tend to increasing the burden of business management on account of lowered profit due to the mege-competition and decreasing investment of construction, multi-interfacing. system in it's attribute and various unreasonable governeing enactments. It is becoming the most important aspects for the management of construction business on how to preserve the profit from the various risks. The ultimate aims of this study is to pursue the contractual equity between the parties by establishing the fundamentals of framework for the compensation of Financial Charges through the review of the precedent studies and analysis of inquiries. As a result of the study, improvable measures for any practical inequality and/or institutional defects of current public contract system in recovering the Financial Cost incurred to Contractor are delivered as below; (1) $\lceil$Working Rules for Construction Industry Accounting Standards$\rfloor$ shall be amended and supplemented so as the incurred interest to be recognized as an operative cost by live return over the collection period. (2) The long-term phase contract system of which is enforcing contractor to bear the certain losses shall be diminished and/or abolished gradually. (3) The unreasonable legislations on compensation for financial cost in contract conditions shall be improved in response to practical circumstances. (4) The use of Critical-Path Method for Time Management shall be activated together with EVMS. (5) Independent application of Contract Enactments for construction industry shall be adopted.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.31 no.12B
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• pp.1099-1111
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• 2006

As W-CDMA R5(HSDPA) service became recently commercialized in Korea, there is increasing demand for new pricing methodology for the 3G mobile interconnection at the earliest possible time. However, it is hard to find any case of systematic study on it. In this paper, a synthetic investigation into the three aspects of new mobile telecommunication service - technology, market, and regulation - is conducted to verify the validity of new interconnection pricing methodology. As the findings of this research indicate, given the several technological limits of 3G, speed of mobile telecommunication industry evolution, the problem of verifying ex-ante regulations' validity, and the cases of some foreign countries, it is suggested that immediate revision of interconnection policy is not sensible and that the revision is more desirable to be postponed until the maturity of the 3G market or the adoption of All-IP network.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2006.11a
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• pp.444-447
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• 2006

Construction managers need to pay a close attention to the resource utilization in order to deliver the construction project successfully. Construction scheduling is crucial for resource control in that it provides information when and how much to bring down work force to sites. In scheduling, activity duration is projected based on the productivity of historical data or the intuition of scheduler. This paper studies the opportunity of applying cost-based productivity for estimating activity duration. For cost-based productivity, the cost of resource is used as an input and the work quantities as an output. Out of historical data, regression model has been developed to understand the validity of applying cost-based productivity in projecting activity duration. The result of study will work as a prerequisite for implementing the environment of database-based construction scheduling.

• The Journal of Society for e-Business Studies
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• v.14 no.1
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• pp.93-120
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• 2009

Content services on the Internet is getting attention as a new business model, selling digital content in real-time on the web. However, most of these content-based business is based on advertisement model rather than direct-payment-based business model. One of the difficulty in setting up charge-based content service is that the pricing paradigm of digital content is different from traditional pricing of products or services. The objective of this study is to empirically derive the feasible price response functions for these content services. Based on conjoint analysis of popular attributes of digital content, several price response function models were fitted against the conjoint data, using online movie viewers' preferences for different attributes of the service. Fitted function models were linear, multiplicative, exponential, attraction, and Gutenberg models. attraction model was found to be well-fit with the data for several specific combinations of attributes. Implications for pricing strategy is discussed at the end.

• Korean Journal of Construction Engineering and Management
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• v.24 no.4
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• pp.25-34
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• 2023

The purpose of this study is to calculate and compare construction costs for On-Site Construction and Off-Site Construction in Plant Project. For this purpose, the target for calculating the construction cost was limited to the Pipe Rack(Steel Structure and Piping). The results derived according to the purpose of the study are as follows. 1)The direct construction cost for On-Site Pipe Rack construction was KRW 56 billion, with Steel Structure KRW 25.1 billion and Piping KRW 30.8 billion won. 2)Comparing the rate of change between On-Site Construction and Off-Site Construction, material costs increased by 1.9% and expenses by 192.1%, but labor costs decreased by -9.1%, resulting in a total direct construction cost increase of 8.4%. These results can be used as reference data to check the current status of the increase or decrease in construction costs when constructing Pipe Racks as Off-Site Construction.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.33 no.5
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• pp.1969-1980
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• 2013

The Traffic congestion is caused by the increasing traffic demand. Thus, economic losses have been increasing every year. To solve these problems, car sharing and rental car systems that are equipped with IT technologies emerge. Car sharing has many advantages-the alleviation of the traffic congestion, the saving of maintenance cost for cars, the reduction of car possessiveness, the solution for the hassle of car ownership, for business and personal duty, and the improvement of connectivity between public transportations-. The goal of the car sharing is to achieve low-carbon and eco-friendly transportation. In this study, we review papers related to the car sharing system and the cost system of traffic systems. We estimate the optimal cost of the cloud traffic system that is one of the car sharing services. We suggest a methodology to estimate operational cost and use cost through the analysis of cost system between similar traffic means. The range of the maximum and minimum cost was determined through the comparison and analysis of similar traffic means. Expected demand and the cost that people are willing to pay were estimated through optimized value pricing. The minimum cost per hour that was compared to the cost of rental car was estimated at 5,333 won and the maximum cost per hour that was compared to taxi cost was estimated at 17,700 won. The cost for users was estimated at 6,930 won. The cost of 50% demands was estimated at 6,550won. Future studies should analyze service hours of users, weather, demand pattern and trend and consider them into the cost estimation.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.401-404
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• 2002

To manage a construction project efficiently, it is essential to ensure the practical usage in construction management. The purpose of this study is to develop a practical model, which will increase the efficiency of management. The followings are the method of this study: (1) Establishing a breakdown structure based on integration of CBS and WBS which is well acquainted (2) Developing and systemizing managerial standards and processes on such activities as calculating and marking progress rates & schedule, summarizing cost by activities level, making out project analysis reports. This study shall contribute to raising the efficiency in construction management after being verified in a pilot project and being developed into construction management system.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 1994.04a
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• pp.70-75
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• 1994

소음진동은 최근 사회적 인식이 변함에 따라 환경관련 민원 중에서 가장 많은 건수의 민원이 발생되는 요소로서 제저업체, 건설업체등의 기업 뿐만 아니라 국토개발, 도시개발을 담당하는 정부 기관 등에서 각종 업무를 수행하는데 중요한 고려대상이 되고 있다. 소음진동이 충분히 저감되지 않은 가전제품은 소비자들에게 외면당하고 민원이 발생된 건설 공사현장에서의 피해 보상금은 기업이 원가부담으로 작용되며 그 사업주체가 정부일 경우는 행정업무 처리에 지장을 초래하게 된다. 소음진동 문제를 해결하는데 가장 우선적으로 필요한 요소는 소음진동 허용기준을 적절히 산정하는 것이다. 소음진동은 발생원인이 매우 다양하며 소음진동에 노출되는 사람(혹은 건축물, 정밀기계 등)의 상대적인 위치(사회 문화적인)에 따라 피해 정도가 다르기 때문에 각국의 정부나 각종 사회단체, 기업은 독특한 국민성, 지역성, 사회개발 정도 등에 따라 적절한 허용기준을 제시하고 있다. 소음진동 문제를 해결해야 할 담당자들은 이러한 모든 여건을 고려하여 현재 상황에서 가장 적절한 허용기준을 설정하고 소음진동 저감 대책을 수립하여야 한다. 본 연구에서는 설계자나 공장관리자, 건설 현장의 관리자들이 소음진동 문제에 직면 했을 때 신속히 적절한 허용기준을 산정한 후 소음진동 대책을 수립할 수 있도록 국내의 주요 소음진동 허용기준을 수립하여 데이타베이스화 하고 이를 PC통신으로 이용가능하게 하는 NVC-DS(Noise and Vibration Criteria-Database System)을 개발하였다.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• autumn
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• pp.65-72
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• 2001

With the recent rising project complexities and competitive environments in the construction projects, a risk management is recognized as more important management tool than the others. However, as most risk management techniques applied to the construction projects are centered around their initial phases and risk analyses, they are not developed into general project management technique such as time management, cost management and quality management, etc., that are usually applied in the process of construction. Thus, this paper proposes a response process to construction project risks based on the risk threshold and its calculation methodology applying a concept of VaR to establish risk management as general management technique in the construction projects.