• Korean journal of communication and information
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• v.44
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• pp.180-222
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• 2008

This study briefly examines the regulation of market-dominating enterprises in terms of market definition, judgement about market dominance, judgement about abuse of market-dominant position, and types of abuse of market-dominant position. This study explores Korea Fair Trade Commission's judgemental cases regarding the prohibition of abuse of market-dominant positions under 'Korea Monopoly Regulation and Fair Trade Act' and focuses on 21 cases related with Korean media industry. Based on this case analysis and literature review, this study derives major issues, problems, and possible alternatives in the regulation of market-dominating enterprises in media markets. And this study suggests implications about monopoly regulation and fair competition policy of Korean media industry.

• KIPS Transactions on Computer and Communication Systems
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• v.1 no.3
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• pp.133-142
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• 2012

Cournot model is one of representative models among many game theoretic approaches available for analyzing competitive market models. Recent years have witnessed various kinds of attempts to model competitive electricity markets using the Cournot model. Cournot model is appropriate for oligopoly market which is one characteristic of electric power industry requiring huge amount of capital investment. When we use Cournot model for the application to electricity market, it is prerequisite to assume the downward sloping demand curve in the right direction. Generators in oligopoly market could try to maximize their profit by exercising the market power like physical or economic withholding. However advanced electricity markets also have demand side bidding which makes it possible for the demand to respond to the high market price by reducing their consumption. Considering this kind of demand reaction, Generators couldn't abuse their market power. Instead, they try to find out an equilibrium point which is optimal for both sides, generators and demand. This paper suggest a quantitative analysis between market variables based on econometrics for estimating demand responses in smart grid environment.

• Journal of Internet Computing and Services
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• v.16 no.4
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• pp.1-11
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• 2015

This study uses the contingent valuation method to estimate the switching cost for adopting the MVNO service. The findings are as follows.: First, Willingness To Switch(WTS) increases as users' using pattern and perceived degree of MVNO service, but satisfaction with current service provider does not play a significant role in predicting Switching Cost. This means that as amount of money users can save exceeds a certain level, users decide to willingly change their service provider to MVNO regardless of their level of satisfaction with current service provider. Second, there are differences in WTS among service subscribers in SKT, KT and LGU+. It means that there will be a difference in the tendency to switch to MVNO among subscribers of service providers. This study suggest the following mangerial perspective to effectively promote the MVNO and boost the MVNO market for activation of mobile data services.: First, MVNOs are better off applying differentiated pricing scheme at attractive rates than using a differentiation of service product and quality. Second, regulators should consider how to implement an MVNO regulatory policy when there is an asymmetric customer loyalty among MNOs. This research will be used to set the MVNO's pricing strategy and to build up a successful regulatory policies.

• KDI Journal of Economic Policy
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• v.36 no.4
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• pp.71-102
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• 2014

This paper examines the possibility of 'parallel reimportation', the reimportation of goods originally produced in the country and exported to another country by profit-pursuing arbitrageurs. The chance of parallel reimportation implies unusually high level of market power of domestic enterprises, and promoting parallel reimportation can be an effective welfare-enhancing, competition-generating policy for the situation. Motivated by the finding, this paper proposes a methodology to measure the welfare effects of parallel reimportation. Specifically, this paper makes use of a structural empirical model to estimate the demand and supply system of Korean automobile market for performing a counterfactual experiment to measure the welfare effects of the parallel reimportation. The results indicates that parallel reimportation can enhance social welfare considerably by increasing consumer surplus and government tax revenue altogether, though it reduces the producer surplus.

• Korean journal of communication and information
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• v.33
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• pp.227-251
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• 2006

The Law Ensuring the Freedom and the Functions of Liability of the Newspapers ("The Newspaper Law") which was passed in the National Assembly on January 1, 2005 is considered as a tremendous setback compared to "the Newspaper Bill" of civil press organizations. Of the two instruments to ensure the editorial freedom, the regulation on the newspaper company ownership share distribution was eliminated and the editorial committee (editorial codes of ethics) became an arbitrary system. That is, the Newspaper Law was criticized as a law of "half-success." However, the Newspaper Law has its own benefit by institutionalizing the establishment of the Korea Commission for the Press, the Press Fund, and the Korea Newspaper Circulation Service for Promoting Newspaper Businesses and by strengthening the criteria to estimate market dominant businesspeople in newspaper market than general markets to ensure the diversity of public opinions. As the Newspaper Law was promulgated, Donga-Ilbo and Chosun-Ilbo submitted the Constitutional Petition against "the Newspaper Law" and the Constitutional Court is expected to give the decision soon. Based on the "Supplements on the Grounds of the Constitutional Petition against the Newspaper Law" ("the Petition"), this paper will examine the main issues of the debates over the Constitutionality of the Newspaper Law.