• ETRI Journal
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• v.30 no.4
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• pp.587-596
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• 2008

Facility-based competition (FBC) in the telecommunications market is considered to have lower static efficiency in the short term and higher dynamic efficiency in the long term. Under service-based competition (SBC), the entrant can reduce its setup costs by leasing network facilities from the incumbent, which makes the entrant viable, pushes the market price down and promotes static efficiency. This paper attempts to measure static efficiency by comparing the profits of the incumbent and entrant in terms of consumer surplus and social welfare under each competition type by extending the Stackelberg model. The results, assuming a linear demand function and variation in regulatory level, show that FBC results in higher social welfare than SBC on the whole. However, SBC accompanied by strong regulation is also shown to have the potential to be superior over FBC. It is also revealed that FBC exhibits a higher producer surplus (particularly, the incumbent's producer surplus) and is, therefore, more desirable in terms of dynamic efficiency. When the entrant's cost is high in FBC, social welfare is shown to be lowered, implying that cost competitiveness is a necessary condition for social welfare.

• Journal of the military operations research society of Korea
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• v.31 no.2
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• pp.86-104
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• 2005

During the 'Cold War', DoD had focused on the high performance and timely acquisition which enabled quick field out the superior weapons than the enemy regardless of acquisition cost. But, after the cold war, the focus has been changed to the 'cost effective acquisition' of weapon systems because of tremendous investment cost & economic theory. The U.S. DoD has been tried to make 'the most effective acquisition system'(AR, Acquisition Reform) from mid-80's with their enough experienced program data, and as a result, they had launched the new acquisition procedure - DoD 5000 series - in 1996. DoD is continuously doing the study and making several improvements on the procedure after it had been once announced. On Oct 30. 2002, DoD noticed that they cancelled the DoD 5000 series documents(5000.1, 5000.2, 5000.2-R) and 5000.2-R will be reissued as a guide. The most recent version which focused on 1) evolutionary acquisition and spiral development, 2) procedure for future technology systems including software and IT, 3) supplement on the area of efficiency, flexibility, creativity and innovation of old system was issued by May 12. 2003. This article suggests a 'good idea' based on the reviewing of these DoD efforts for our defense acquisition regulation and procedure to go. It includes the CAIV concept application, IPT utilization, T&E method, cost or price based contract etc-all for the effective acquisition.

• KIEAE Journal
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• v.10 no.1
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• pp.19-24
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• 2010

Modern people are spending most of time in interior area. Indoor air environmental problem is one of the most effective factors influenceable to human health. Furthermore, saving energy and making ventilation system for pleasant indoor environment are necessary when it is faced shortage of energy over the world. In our country's case, it is already imposed that required quantity of air ventilation in buildings is 0.7 times per hour on "The regulation on building engineering system". As on the rise of the interests about Indoor air environment, Heat and Carbon dioxide emissions from User's metabolism, activity, furniture, and construction materials etc. could be the causes of Indoor air pollution. If these materials stays in Indoor air for so long, it could directly influence the user's health condition with a disease. As of building's sterilization improved that raised more mechanical ventilation. It also leads much energy waste in a period of high price of fossil fuel. Therefore, the way that saves energy and effective control of indoor ventilation is urgently needed. So, this study places the purpose on validating volume of indoor ventilation and user's comfortable degree by comparison CO2 emission rate through changing floor temperature.

• Environmental and Resource Economics Review
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• v.4 no.2
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• pp.243-265
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• 1995

본 논문은 Rogerson의 실질불변감모상각방식 (Real Constant Amortization Schedule)이 가격상한규제 (price-cap regulation)하에서도 사회적으로 최적인가를 규명하는 것을 목적으로 한다. 실질불변감모상각방식이란 피규제기업의 현금의 흐름 (cash flow) - 요율기저에 대한 공정보수와 감가상각액의 합계 - 의 실질가치가 매기에 일정하도록 해 주는 감모상각방식으로서, 이 방식을 사용할 경우 기업은 규제시차의 길이에 관계 없이 최척의 자본-노동비율을 달성하려 한다는 것이다. 실질불변감모상각방식은 통상 사용되는 감모상각방식보다 느린 속도로 자산의 가치를 줄여 나아가는 것으로 알려져 있다. 가격상한규제에 관한 단순한 모형을 구축하여 분석해 본 결과, 수요가 비탄력적일 경우 실질불변감모상각방식은 가격상한규제하에서도 최적자본-노동비율을 유도하며, 가격상한규제는 규제메카니즘에 있어서 투자보수율규제와 유사하다는 결론을 얻을 수 있었다. 그러나, 가격상한규제에 있어서는 소매물가지수의 상승률뿐만 아니라 피규제기업의 효율성제고 효과가 소비자가격의 인하로 나타나는 메카니즘도 중시되고 있다. 즉, RPI-X룰에서 X에 해당하는 부분으로서, 이는 내부효율성의 향상 이외에 기술진보속도도 반영하는데, 이러한 기술진보는 가격상한의 인하요인으로 작용하므로, 피규제기업의 입장에서는 감가상각속도의 적절한 설정이 없는 한 기술진보의 유인이 줄어들 수도 있다. 따라서 기술진보속도와 최적감가상각속도의 관계를 단순한 모형을 확장하여 살펴보았는데, 기술진보속도가 빠를수록 감가상각속도도 빨라져야 한다는 결과가 도출되었다.

• Journal of Electrical Engineering and Technology
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• v.9 no.3
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• pp.1089-1095
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• 2014

Innumerable microgrids would be operated independently by individual operators in a future smart grid. This kind of decentralized power system requires entirely different operation scheme in the actual power system and electricity market operation. Especially, frequency regulation is very important for successive energy trade in this multi-microgrid circumstance. This paper presents an optimal energy and reserve market participation strategy and operation strategy of energy storage system (ESS) by a microgrid operator (MGO). For definite evaluation of the proposed strategy, we postulate that the MGO should participate in the Power Exchange for Frequency Control (PXFC) market, which was devised by Maria Ilic and her coworkers and is suitable to the decentralized operation circumstances. In particular, optimal reserve capacity of the frequency control market and optimal market participation ratio of ESS between frequency control market and energy market are derived theoretically and evaluated by simulations utilizing Nordic Pool Elspot price data.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2009.05a
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• pp.301-304
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• 2009

each kind environment connection regulation is solidified worldwide after kyoto protocol recently, and research of revival energy field by necessity extension of source of energy that continuance is possible that follow to high oil price is consisting concentrically. In treatise that see hereupon to apply to wind force development system of revival energy field topography of our country and wind speed investigation analyze and examine wind force energy wish to.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2012.10a
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• pp.84-85
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• 2012

Continuous oil price rising and the regulation of carbon emmission makes companies to have higher competitiveness. because of this trend, companies are trying to establish and manage efficient logistics system to improve customer service and reduce cost, so more competitive logistics complex is needed. To construct this kind of logistics complex, proper policy and logistics system for transportation is necessary. Especially, efficient operation through establishing system of logistics at the complex is very important for low cost and environmental friendly point of view. So this paper presents logistics network operation model for efficient transportation, especially approaches the problem with Multi-Phase.

• East Asian Journal of Business Economics (EAJBE)
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• v.9 no.1
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• pp.63-69
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• 2021

Purpose - This study examines the regressive estate taxation issues and seeks measures for the rationalization of property taxation. Although various discussions on the reorganization of property taxation have been made, discourses on how much property taxation burden is given to homeowners and on whether the increase of property taxation should be shifted to tenants have not been properly carried out. Research design, data, and methodology - Therefore this study examined the property taxation issues and sought measures for the rationalization of property taxation based on homeowners' social and economic characteristics. This study deals with discussions on the directions for rational real estate reorganization and what desirable real estate market stabilization polices are. Result - This study investigates what issues and disputes the powerful real estate policies to ease overheat of the real estate market have caused and seeks directions to solve those. Conclusion - The study results supports that the real estate taxation would be levied in proportion to the economic capacity of real estate owners to pay taxes. It implies that tax levy not only in conjunction with income, but also in combination with existing real estate assets would be considered to be desirable in terms of comprehensive tax justice.

• Korea Trade Review
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• v.42 no.6
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• pp.27-50
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• 2017

This study is to present practical plan to stimulate Parallel Import Policies, Which is one of the government policies to drop import prices of imported goods. Although, preliminary studies focused on legal aspects related to Intellectual Property Right, from the perspective of trade, we conducted a study on economic aspects through parallel import, consumer welfare, etc. For this study, the parallel import system of the United States and Japan was compared with Korea and the domestic parallel import market status was analyzed by comparing market price. According to the study, the current parallel import system lacked the limits of government regulation and distribution market structure. It proposed practical plans such as political suggestions and changes in distribution structure. This study is meaningful in analyzing the problem of parallel imports that currently occur in the Korea market based on data concerning parallel imports in practical terms

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.6 no.4
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• pp.75-94
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• 2011

Our objective is to investigate the various variables that influence the purchase intention of small enterprise products and to interpret the impact of these variables in terms of individual differences. Need for cognition, need for uniqueness, and self-regulation are selected to explain the choice or purchase intention. The major reasons that consumers are reluctant to purchase small enterprise products are mainly due to problems in quality and distribution channel. When these problems are resolved, it is interesting to see how the individual differences affect purchase intention for small enterprise products and how the impacts will be changed. Previous studies assumed uni-dimensionality of need for cognition and need for uniqueness. We relaxed the assumption, incorporated the nature of multi-dimensionalities for these variables and showed that sub-dimensions of these variables have different effects on the purchase intention. After improving the conditions of quality or distribution channel, promotion focus and prevention focus for sub-dimensions of self-regulation have positive impacts on the purchase intention and sub-dimensions of need for cognition and need for uniqueness have enhancing or reducing effects on purchase intention. These results can be interpreted that consumers expect some levels of quality or distribution channel to reach consumer choice. Results for cluster analysis showed that how sub-dimensionalities of individual difference variables are combined to form groups and how these groups are related to purchase intention. Emphasis of quality over price has a negative correlation with purchase intention of small enterprise products.