• Proceedings of the Korean Operations and Management Science Society Conference
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• 2004.05a
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• pp.131-134
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• 2004

무선시장의 급격한 확장과 유무선간 복합/결합서비스 등장추세에 따라 OECD 및 EU 각국을 중심으로 통신시장 경쟁구도 개편과 규제정책방향을 재검토하고 유무선간 대칭규제 방향을 지향해 가고 있다. 그러나 국내의 경우 유선사업의 성장세 둔화와 시장개방에 대한 비대칭 규제가 계 속되고 있는 상황에서 무선망 개방 등 통신시장의 합리적 경쟁구도 설정을 위한 방안 연구가 시급히 요청되고 있다. 따라서 본 고에서는 주파수 부족으로 여전히 경쟁이 부재한 이동전화 시장을 중심으로 경쟁을 활성화시키기 위한 여러가지 방안들을 살펴보고 이를 이미 실행하고 있는 외국의 사례를 통해 이들 정책의 도입 및 경제적 효과를 살펴보고자 한다.

• Proceedings of the KAIS Fall Conference
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• 2008.11a
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• pp.304-306
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• 2008

CSMA/CA를 기반으로 하는 IEEE 802.11 무선랜의 MAC에서는 데이터 전송을 제어하기 위한 방법으로 DCF와 PCF를 사용한다. CSMA/CA는 스테이션간의 충돌을 줄이기 위해서 임의의 백오프 시간을 각 스테이션의 경쟁윈도우(Contention Window) 범위에서 결정한다. 스테이션은 패킷 전송 후 충돌이 발생하면, 윈도우 크기를 두 배로 증가시키며, 패킷을 성공적으로 전송하면 윈도우 크기를 최소 경쟁 윈도우(Minimum Contention Window)로 감소한다. DCF는 경쟁 스테이션이 적은 상황에서는 비교적 우수한 성능을 보이나 경쟁 스테이션의 수가 많은 경우 처리율, 패킷지연 관점에서 성능이 저하되는 문제점이 있다. 본 논문에서는 IEEE 802.11 MAC 계층 DCF 방식에서 최소 경쟁 윈도우의 값이 포화수율 및 패킷지연에 미치는 영향을 시뮬레이션에 의해 분석한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2015.10a
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• pp.243-245
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• 2015

항만간의 물동량 확보 경쟁은 국외 항만간 뿐만 아니라 국내 항만간에도 치열하게 이루어지고 있다. 이와 같은 상황에서 항만 물동량 확보를 위한 경쟁력 강화의 방안 중 하나로 O-D 분석(Origin-Destination, 기종점분석)을 통한 교역구조와 교역품목 분석을 고려 할 수 있다. 본 연구는 최근 10년간 국내 주요 4대 항만에 대한 전체 국내외 교역구조와 지역과 항만별 교역품목 분석하여 항만 경쟁력 강화를 위한 방안을 제시하고자 하였다. 연구의 결과는 국내 주요 항만은 국내 지역과 국외 지역, 항만별 특색을 가진 교역 구조를 나타냈으며, 교역품목에서도 지역별, 항만별 특색을 보이는 것으로 분석되었다. 본 연구의 결과는 항만 물동량 확보를 위한 마케팅 대상 지역과 품목에 대해 활용이 가능할 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2016.04a
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• pp.158-161
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• 2016

스마트폰이 대중화됨에 따라 다양한 종류의 어플리케이션이 생겨나고 있고 관련 사업간의 경쟁도 점점 심해지고 있다. 경쟁시장에서 살아남기 위해서는 앱 개발자들은 신중하게 관련 마켓의 경쟁상황, 주요 타켓의 성별 및 연령층을 체계적으로 분석해야 할 뿐만 아니라 자신의 앱이 다른 앱들과 차별화 될 수 있는 특징을 가져 경쟁력을 확보해야 한다. 본 고에서는 한국전자통신연구원에서 개발한 "MOta 모바일앱 분석도구"를 이용하여 20대 여성을 타켓으로 하는 앱 마켓의 현황에 대해 진단하고자 한다.

• Korean Journal of Construction Engineering and Management
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• v.14 no.5
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• pp.122-130
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• 2013

As the level of competition has increased in the construction management market, it becomes a critical issue for CM firms to secure competitive edges. The objective of the study is to investigate elements of competitive strategy as perceived by CM firms and to discuss key features and implications. Michael Porter's Competitive Strategy Model was used as a framework to analyse the elements under three strategy categories. A major finding includes that Differentiation Strategy is generally perceived most important strategy category but, depending on the group to which a CM firm belongs, there exist a gap in the perception. However, regardless of the group, Cost Leadership is commonly considered least important strategy category. In particular, lowest-bidding strategy element showed the least importance. Understanding CM firms' perceptions on elements of competitive strategy provides an insight into CM firms' current strategy directions and can be useful for future tuning in a firms' own strategy.

• The Journal of the Convergence on Culture Technology
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• v.9 no.2
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• pp.389-397
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• 2023

This study examines how macro-economic conditions, fashion momentum, and inter-genre competition affect movie genre's popularity, thus shaping fashion trends in the feature film market in Korea. Using panel data analysis of genre-specific audience sizes with 6 genre cateories and 132 monthly time points, we found that favorable economic conditions generate the fashion trend in the action/crime genre, while the deterioration of the economic conditions leads to the decline of action/crime genre. The finding implies that economic situations influence cultural consumers' psychological states, which in turn shape the fashion trend in certain direction. Furthermore, we found that the action/crime genre has a greater fashion momentum and its competitive power is stronger than other genres, suggesting that this genre has longer fashion cycle even if other genres rise to the top in their popularity. We argue that such enlengthened fahion cycle and competitive stength of the action/crime genre are associated with its breadth of niche width and audience loyalty. Scholarly and practical implications are discussed.

• Journal of the Korean Institute of Intelligent Systems
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• v.22 no.2
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• pp.261-266
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• 2012

Due to rapid growth of East Asian economy, some changes are being made in trade volume and shipping market of this area. Busan port in Korea and Shanghai port in China are continually increasing their investment in port development and competitiveness in order to become the logistics hub of Northeast Asia. Especially the competition for transshipment containers becomes more and more fierce. So in this study, we set a goal of increasing the port competitiveness on transshipment cargo by an analysis of competition strategies. We choose the Busan port and the Shanghai port as the research objects, game competition model and real data is used to analyze the two ports' price strategies and market share. According to the results, some advices will be put forward to enhance competitiveness of the two ports.

• Journal of Digital Convergence
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• v.10 no.10
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• pp.13-18
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• 2012

This paper aims at examining the Korean export competitiveness of clean robot industry and presenting the strategy to improve capability of clean robot industry under Korea-US FTA. For this purpose, the current status and environment of Korea-US clean robot industry and the core points of Korea-US FTA are analyzed. In addition, using SWOT analysis of Korean clean robot field, we analyzed the characteristics of Korean cleaning robot industry and proposed the strategy for export expansion and strength of export competitiveness. Through above analyzation and strategies, we found out that Korean clean robot industry have some advantage to go into the US market and get the opportunity to improve the export capability though Korea-US FTA. In conclusion, to improve current status and to get the competitiveness, government and companies should recognize and utilize Korea-US FTA effect significantly.

• Korea Trade Review
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• v.41 no.2
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• pp.29-60
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• 2016

Research and Development(R&D) investment is an issue of central importance in any economy. In this paper we analyze the relationship between R&D spillovers and trade-related variables, using a two-stage model where duopolists simultaneously decide on R&D in the first stage and engage in Cournot competition in the second stage. We characterized and compared the free-trade and trade-restriction R&D equilibrium in a two-stage game of R&D investment followed by Cournot market competition. We also assessed the impact of varying the R&D spillover on the equilibrium outcomes and tariff. We showed for both free trade and protection cases that there exists a unique symmetric solution(subgame perfect Nash equilibrium). As the solution, while analytical, cannot be stated in closed form, we resorted to numerical experiments to investigate the equilibrium results. Our estimates indicate for both free trade and protection cases that the level of R&D investment and the rate of R&D expenditure decrease as the degree of R&D spillovers increases, and that there is an inverse relation between the degree of R&D spillovers and level of protection. The latter implies that the larger the degree of R&D spillovers, the lesser the level of protection.

• Environmental and Resource Economics Review
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• v.13 no.2
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• pp.219-243
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• 2004

Generally, electricity market has monopoly market structure because of need of enormous investment for infrastructure. However, the introduction of competition in network industry as electricity is a tendency of the world with decreasing the effects of economy of scale due to the advancement of technology. Now, electricity industry restructuring is in progress but the competition in electricity retail market is not in force yet in Korea. Whether a effective competition exist or not is very important to policy decision maker who drive restructuring, but there are small numbers of quantitative researches on that. In this study, we estimated the effectiveness of competition in the electricity retail market through switching costs. If switching costs are high, consumers actually can be locked in incumbent firm in spite of introduction of competition. Therefore switching is a critical factor to determine effectiveness of competition and to estimate the size of switching costs quantitatively can proffer the information about whether the competition in the electricity retail market is effective or not in the future. We estimated switching costs using consumer' stated-preference data by conjoint analysis. In according to estimation results, the cost of switching process is not so high, but the relative brand loyalty of an incumbent company is significantly high. And the price is considered as the most important factor choosing an electric service commodity. Based on the empirical results, it is possible to analyze the relationship between suppliers' competitiveness resulted from management efficiency and customers' switching possibilities. The paper therefore provides guidance for suppliers in deciding to enter into retail competition and for policy makers in introducing retail competition. And it has a significance of estimating the switching costs directly.