• Journal of Internet Computing and Services
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• v.12 no.4
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• pp.51-59
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• 2011

The purpose of this study is to provide relevant directions of media industry regulation and policy by analyzing the relationship between market concentration and performance in global pay TV markets. The market concentration has long been regulated in the media industry under the belief that it harms market efficiency and cultural diversity. As the global media market is undergoing significant chance accelerated by the advance of technology, it is necessary to examine the feasibility of this long myth. The data are collected from global 17 pay TV markets and analyzed to see whether the highly concentrated markets by a single player result in higher price and slower service penetration. The result indicates that the price is not escalated and the penetration is not limited even in the markets where a dominant player takes high market share. It implies that more diverse factors other than the market concentration affect the market performance and that maintaining strict regulation of the market concentration is likely to have negative effect on technology innovation.

• The Journal of the Korea Contents Association
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• v.17 no.5
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• pp.252-261
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• 2017

This paper is aimed for providing Business Intelligence System which is in order to analysis and produce the useful industrial information such as the market penetrance and the status of competition among the enterprises in the same or similar industrial field. These industrial information were mainly analysed by the annual sales of the enterprises in the entire industry and the industrial market based on KSIC was segmented. The results obtained in the study were applied as a module in the KMAPS(KISTI Market Analysis and Prediction System) which is the demand-based Business Intelligence System. And they were verified reliability by comparing to the qualitative analyses of the specialists. It is considered that the market penetrance and competition information can be valuably used for the enterprises makes a decision to enter the new market or develop new products.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2014.10a
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• pp.708-710
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• 2014

최근 금융 분야에서는 빅 데이터를 이용하여 주가예측 모형을 만들어내고 있으며, 특히 금융 시계열 자료의 변동성 집중 현상을 금융 빅 데이터를 이용하여 분석함으로써 세계 주식시장의 동조화 현상을 분석하고 있다. 본 논문에서는 한국과 중국의 일별 주가지수수익률과 일중 주가지수수익률을 이용하여 이들 2개 국가의 대표적인 주가지수 시계열 데이터에 변동성 집중 현상이 존재하는지를 보다 세밀하게 추적하여 양국 주식시장의 동조화 현상을 분석한다. 분석 결과, 한국의 KOSPI와 중국의 Shanghai 종합주가지수의 지수수익률 시계열 자료는 단위근이 존재하지 않으며, 변동성 집중 현상을 보이는 것으로 나타났다. 또한 한국보다는 중국 주식시장의 변동성 집중현상이 보다 강하게 나타나며, 이러한 현상은 일중 주가지수수익률 시계열 자료에서 보다 두드러지게 나타났다.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.381-382
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• 2017

본 논문의 주요 목적은 시장집중도, 경쟁현황에 대한 산업정보를 분석, 생산하기 위한 비즈니스 인텔리전스 시스템을 제공하는 것이다. 이러한 산업정보들은 주로 전체 산업 내 기업들의 연도별 매출액으로 분석하였고 산업시장은 한국표준산업분류에 의해 세분화하였다. 이 연구를 통해 얻어진 결과는 수요자 중심형 산업/시장인텔리전스 시스템인 KMAPS에 하나의 모듈로서 적용하였고 그 결과는 전문가들의 정성적 분석 결과와 비교하여 신뢰성을 검증하였다. 이 시스템을 통해 얻은 시장집중도 및 경쟁상황정보는 기업들이 새로운 제품개발 후 시장진입 시 필요한 의사결정을 하는데 활용될 수 있다는데 본 연구의 의의가 있다.

• The Journal of the Korea Contents Association
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• v.20 no.1
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• pp.427-436
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• 2020

Prior literature shows that audit market concentration which is measured as the Herfindahl index is negatively associated with audit quality in Korea. This study analyzes whether characteristics of an audit committee have effect on the relation between audit market concentration and audit quality. This is because it is expected that effective audit committees restrict the tendency of dominant auditors to neglect their duties. The empirical results of this study using the sample firms having an audit committee listed in the Korea Composite Stock Price Index market for 2006-2015 are summarized as follows. First, consistent with prior research, audit quality decreases as audit market concentration increases. However, audit quality is not lowered as audit market concentration rises only when the audit committee has financial expertise among representative characteristics of an audit committee - independence, financial expertise, and activity. This research finds contributions in that it explores the effect of audit committee characteristics on audit quality in consideration of audit market concentration and utilizes the differential types of the characteristics of an audit committee at the same time.

• Journal of Korea Port Economic Association
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• v.32 no.3
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• pp.47-66
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• 2016

Once it has been built, a container terminal is impossible to move to another location. It is hard to rectify wrong decisions in a container terminal. This highlights the importance of decision making for a container terminal. The port management about a container terminal has developed from a cargo interface location between sea and land transport, to the standardization of information and procedures due to globalization among global shipping and terminal operators. This research focuses on the current states of market and management for global container terminal operators by investigating up-to-date data for them. The current market states for global container terminal operators are analyzed by using by Herfindahl-Hirschman Index. The analyses of current management states for global container terminal operators are divided into profitability analysis, activity analysis, and bankruptcy risk analysis. Finally, global container terminal operators are clustered into three groups by the current management states.

• KDI Journal of Economic Policy
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• v.25 no.1
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• pp.55-98
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• 2003

This paper examines the hypothesis that states consolidation and concentration within Korean banking industry have impaired competition and escalated market power of banks. Competition is measured using Bresnahan-Lau method, which estimates a structural model consisting of a demand function and a supply function of banking services, based on aggregate monthly data of January 1996 to December 2002. Estimations indicate that pricing behavior of Korean banks during the period is consistent with perfect competition, and they behave more competitively even after the increase in concentration ratio. The results imply that, contrary to the concerns over the potential for monopoly power, bank competition may not be damaged by the consolidation.

• KDI Journal of Economic Policy
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• v.18 no.3_4
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• pp.183-238
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• 1996

본 논문에서는 우리나라 기업집단이 갖는 현황과 특징을 여러 각도에서 살펴보았으며, 기업집단을 둘러싼 논쟁 중 중요한 쟁점인 기업집단의 생산구조 및 다변화가 기업집단의 성과에 미치는 영향에 대해 실증적인 분석을 시도하였다. 30대기업집단이 광공업부문에서 차지하는 비중은 그동안 변화가 있었지만 최근 들어 조금 높아지고 있으며, 상위기업집단과 하위기업집단간의 격차도 확대되고 있어 경제력집중 문제가 소수의 상위기업집단의 문제로 압축되는 경향이 나타나고 있다. 30대기업집단 가운데서도 상위집단은 산업규모가 크고 성장속도가 빠른 산업에 중점적으로 진출해 있는 반면, 중 하위집단은 산업규모는 크지만, 성장이 상대적으로 정체되어 있는 부문에서 높은 비중을 차지하고 있다. 30대기업집단은 다양한 산업 시장에 진출해 있어 다변화가 크게 진전되어 있으며, 개별 상품시장에서도 높은 시장지위를 차지하고 있다. 규모가 큰 시장일수록 기업집단의 참여가 많으며, 규모가 작은 시장에서는 참여 기업집단이 독점적 위치를, 규모가 큰 시장에서는 시장을 분점하고 있는 경향이 있다. 실증분석에 의하면 기업 및 기업집단의 성과에 가장 큰 영향을 미치는 것은 노동장비율, 노동의 질 등 생산측면의 요인이며, 시장력 및 시장구조, 다변화 등이 기업집단의 성과에 어떤 영향을 미치는지는 판단하기 어렵다. 기업집단의 규모와 기업집단의 성과간에는 특별한 관계가 성립하고 있지 않지만, 개별기업 수준에서는 기업규모가 클수록 성과가 높은 것으로 나타났다. 이는 기업의 대형화는 촉진시키되 기업집단 계열기업간의 연결관계를 단절하고자 하는 현재의 경제력집중 대책방향이 적절하다는 점을 시사한다. 기업공개는 기업집단의 소유분산에 기여하는 동시에, 기업의 규모확대를 촉진하는 효과가 있는 것으로 나타났는데, 이로부터 기업공개의 촉진이 경제력집중 대책의 유용한 수단일 수 있다는 결론을 도출할 수 있다.

• Journal of Navigation and Port Research
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• v.46 no.4
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• pp.351-358
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• 2022

This study analyzed changes in the market concentration of Korean ocean-going shipping companies using shipping revenue based CR (Concentration Ratio), and HHI (Herfindahl - Hirschman Index) to examine the effects of the government's selection and concentration based the shipping reconstruction scheme. The results of this study showed that the market structure of the Korean shipping industry has changed from a competitive market to a rather concentrated market, as CR as well as HHI values have increased from 2019 to 2021. In particular, the market share of the deep-sea shipping lines has risen significantly compared to the intra-Asian short-sea shipping lines and the tramp carriers, implying that the Korean liner shipping market has become a monopoly, or highly concentrated oligopoly market. Compared to other shipping markets, the high rise in ocean freight rates (i.e. Asia-Europe America) was the leading cause of the increase in the revenues of the ocean-going shipping lines, and the increased fleet through preemptive government support has enabled them to achieve more revenues. As a result, it can be interpreted that the government's fleet expansion strategy has been more effective than expected, but it is too early to conclude if the market structure of the Korean ocean-going shipping companies has been strengthened.

• Korean journal of communication and information
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• v.78
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• pp.141-176
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• 2016

This study investigates changes of market structure from 2001 to 2015 in the Korean daily newspaper industry using concentration and mobility measures. The main empirical results are as follows. First, the industry's total asset shows a U-shaped trend, despite the downward trend of the industry's total sales revenue. Second, the market concentration, measured in terms of assets, shows the trend of an inverted-U shape. The relatively small firms, measured in terms of assets, have on average gained in market share while the relatively large firm have lost. Third, market concentration, measured in terms of sales revenues, shows a U-shaped trend. the relatively small firms, measured in terms of sales revenues, have on average gained in market share while the relatively large firm have lost. My central argument has been that it is desirable to supplement traditional concentration measures with mobility statistics and trend analyses in investigating and regulating market structure.