• ETRI Journal
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• 제30권4호
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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.

• 한국콘텐츠학회논문지
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• 제11권10호
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• pp.115-127
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• 2011

방송시장에서 지상파 재전송 제도의 개선과 PAR 등의 도입이 거론되는 이유는 방송 콘텐츠가 주요 경쟁수단으로 인식되고 있기 때문이다. 특히 유료방송시장에서 SO와 PP의 전략적 제휴는 경쟁 사업자에 대한 콘텐츠의 배타적 거래로 이어져 상대 사업자의 정상적인 경쟁을 저해하고 시청자의 접근권을 제한하는 결과를 초래하고 있다. 이로 인해 방송시장에도 필수설비 이론이 도입되어야 한다는 주장이 제기되고 있으며, IPTV법의 콘텐츠동등접근조항과 방송법상 금지행위 도입도 이와 같은 맥락에서 이해될 수 있다. 그러나 방송 시장에 대한 필수설비 이론의 적용은 일반 설비와 콘텐츠가 기반하는 철학적 경제적 법체계적 차이로 인해 부작용을 초래할 것으로 예상된다. 따라서 필수설비의 개념과 필수설비의 거래거절에 대한 기본적인 개념과 이것이 경쟁 시장에서 구현되는 구체적인 심결례 및 판례를 검토하는 기초작업이 필요한 시점이다. 본 연구는 이러한 검토를 통해 방송 콘텐츠에 필수설비 이론의 적용이 타당한 것인지 사전적인 제언을 하는데 그 목적이 있다.

• 한국주거학회논문집
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• 제24권6호
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• pp.1-8
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• 2013

The purpose of this study is to perform an analysis on the design methods of the "UR Housing Stock Renewal Design Competition" for Hanahata No.27 Housing by the UR Renaissance Agency in Japan. The analysis is done by looking at the aspects of lifestyle, demographics, environment, and community changes. The results are as follows: 1) Since demographic changes are caused by low fertility, aging populations need the support of locally-based social welfare facilities of which the architectural aspect can be examined. 2) Changes in lifestyle, such as diversity of family composition, flexibility of work, and improvement of leisurely activities require residents to have public spaces and facilities 3) Since environmental changes caused by deteriorated housing need the conversion of awareness about housing estates as a social asset. 4) To revitalize the community, houses, public facilities, and communal outdoor spaces must be connected. The results of this study are expected to serve as clues to the future direction of sustainable conversion in Korea.

• 교육시설 논문지
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• 제21권6호
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• pp.13-24
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• 2014

The purpose of this study is to understand the required concept in the architectural competition for public library and its application in design process. The research is based on the 27 design guideline of architectural competition for public library from 2009 to 2013 and, as a case study, the project for the Chungcheongnam-do Provincial Library, the prize winner in 2014. Three required concepts; symbolism, function, and sustainability, are categorized through the analysis on the design guideline of 27 competitions and are identified. Symbolism is expressed by landmark forms based on the local characteristics. The function of public library means to provide services to everyone, regardless of age, race, gender, religion etc., as a local community. Sustainability is related to passive architecture for the maintenance and management of buildings. These three concepts for public library applied on the design process of Chungcheongnam-do Provincial Library and design elements in each process are categorized in three concepts. The results shows not only how closely the locality and a user are related, but also the changes in the appearance of a public library as time passed.

• ETRI Journal
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• 제26권6호
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• pp.665-668
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• 2004

The introduction of a mobile virtual network operator (MVNO) system is expected to increase consumer benefits, boost competition in the mobile market, utilize idle bandwidth, and expedite mobile-fixed line convergence and growth in the mobile Internet market. This research endeavors to study the optimal access charge for an MVNO system, which is expected to be introduced to the Korean mobile communications market. We found that the optimal access charge is higher in the interdependent model than in the independent model if demand for mobile phone service is based on a substitution relationship. We also found that the optimal access charge is higher than the marginal cost.

• 자원ㆍ환경경제연구
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• 제29권1호
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• pp.47-89
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• 2020

본 연구는 한국의 천연가스시장에 경쟁을 도입하는 정책이 사회후생에 미치는 영향을 이론적으로 분석하였다. 기존의 독점기업은 천연가스의 저장/운송을 위한 필수설비를 보유하고 있으나, 경쟁도입을 위해 신규기업 진입 시 필수설비를 공유해야 하는 의무를 지게 되었다. 독점기업이 천연가스의 가격과 필수설비 접속료를 자유롭게 설정할 수 있는 경우, 신규기업의 진입은 사회후생을 증가시킬 뿐만 아니라 독점기업의 이윤도 증가시킨다. 그러나 정부가 가격규제를 시행하는 경우, 설비 운용비용에 대한 정보의 비대칭성이 있는지의 여부에 따라 사회후생이 결정된다. 정부가 완전한 정보를 가지고 있는 경우에는 사회후생을 극대화하는 선택을 쉽게 유도할 수 있으나, 그렇지 않은 경우 정부는 불완전한 정보를 바탕으로 가격규제를 시행하게 된다. 본 연구에서는 정부와 기업들의 의사결정을 베이지안 게임을 통해 분석하여, 완전 베이지안 균형 아래서 독점기업이 공개하는 정보의 양에 따라 사회후생이 어떻게 변화하는지 살펴보았다.

• 전기학회논문지
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• 제58권5호
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• pp.898-904
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• 2009

The objective of the present study lies in constructing web-based GIS system providing broad range of information applicable for power/telecommunications distribution facilities through cable. Nowadays, Korea is renowned forits faste sttele communications network across the nation enjoyable for being a test-runbed by worldwide contents providers. It is not too much to say that the trend is caused by the fact that Korea utilizes the cobweb-like power transmission cables applicable for the nationwide telecommunications networking. In particular, the trend has been all the more encouraged by the governmental drive to expedite the telecommunication network by way of the established power transmission facilities deemed as publicutility. Nevertheless, few can deny that the overexcessive competition among telecommunication service providers increasingly gives rise to unauthorized, arbitrary facilitation of distribution devices, which becomes much burden in operating the normal power/telecommunications distribution facilities by a power-generating company. In this regard, the study, to cope with such problems, attempts to develop a web GIS-based information management system compatible with NDIS(New Distribution Information System), a distribution facility management system now under operation by KEPCO, making advantage of GE Energy's SIAS(Smallworld Internet Application) technology. The model provided by this study is expected to get closer into effective operation of distribution facilities along with better sharing of information among conventional telecommunications operators, while getting rid of infringed facilitation cases

• Industrial Engineering and Management Systems
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• 제8권4호
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• pp.221-227
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• 2009

There are customer services jointly provided by two facilities so that each customer will complete the course made up of both facilities' sub-services. The two facilities are assumed invested respectively by an infrastructure owner and one subordinate facility owner, whose partnership is built on their capital investments. This paper presents a mathematical model of Stackelberg competition between the two facility owners to derive their optimal Nash equilibrium. In this study, each facility owner's profit is consisted of fixed revenue fractions of sold services, operating costs (including depreciation cost) and maintenance costs of her facility. The maintenance costs of one facility are incurred both by failures and deterioration due to usage. Moreover, for both facilities, failures are rectified immediately by minimal repairs and preventive maintenance is carried out at a fixed time epoch. Additional assumptions are also employed to develop the model such as customer arrivals are manipulated to follow a Poisson process, and each facility's lifetime is independently Weibull-distributed. The Stackelberg game proceeds as follows. At the first stage of decision making process, the infrastructure owner (acting as a leader) decides the allocation of revenue shares based on her self-interest. After observing the allocation of revenue shares, the subordinate facility owner determines her own optimal price of services. This paper investigates actions and reactions of the two partners in the system. Then analytical conditions are proposed to achieve a unique optimal Nash equilibrium. Finally, some suggestions for further research are discussed.

• 보건행정학회지
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• 제5권2호
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• pp.127-154
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• 1995

The Korean hospital industry is rapidly changing along with the competition among hospitals. Until recently it was easy for hospitals to profit even without efficient management and competitive strategies. However, the increasingly intensive competition endanger their profits but also their survivals. Hospital managers have no choice but to seriously consider competitive management and marketing strategies to remain alive and prosper. This study introduces a useful methodology--perception map drawn using multidimensional scaling--for developing competitive strategies, and illustrates its application to developing a perception map of 9 Seoul-based general hospitals. We also suggest the concepts and examples of positioning strategies and patient satisfaction management system. One of the interesting findings is that the Samsung medical center which opened less than a year ago is ranked first in most aspects such as kindness, facilities, waiting time, and parking, and the second in clinical performance just after the Seoul National University Hospital.

• 한국시스템다이내믹스연구
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• 제11권4호
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• pp.5-23
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• 2010

The competition between hospitals has become an issue for many hospitals because of the sudden increased number of health providers. As the marketing or customer management have become important factors as means of competition, a number of hospital have been considered or already adopted the coordination system. A system dynamics model is developed to see the effect of the hospital coordination system. This paper after briefly explaining the structure of the system dynamics model, discusses the roles of the hospital coordination system with examples. The system dynamics model quantifies through simulations the process of effects of coordination system on the number of customers, productivities of employees (nurses and doctors), and finally the financial status. As a conclusions of the simulations and their analysis, it is concluded that coordination system could be more effective than the investment to the facilities. Since the study is based on only one hospital case, it is limited. However, it explains the mechanism of the coordination system quantitatively as well as qualitatively.