• 한국경영과학회지
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• 제33권4호
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• pp.1-12
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• 2008

The study suggests an answer to the question of what determines category diversification of Internet portals in Korea. First, as external factors, competition intensity and market growth are hypothesized to have influence on the degree of category diversification. Second, an internal factor, user loyalty to portals, is hypothesized to influence negatively category diversification. The study performed empirical analysis based on weekly portal-specific panel data of eighteen internet portals in Korea during the period between 2001 and 2004. The result shows that category diversification increases as competition intensity increases, and that category diversification decreases as user loyalty increases. There was no effect of market-level growth rate on category diversification.

• 한국가금학회지
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• 제18권2호
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• pp.121-135
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• 1991

Facing the international open-trade of agricultural and livestock products, a basic strategy is urgently necessary to improve the domestic livestock industry to an international level. Price and quality competitions are the most important target in international trade. Improvement in productivity of livestock is the most important factor in price competition. In recent trade of livestock products, quality competition becomes more important than price competition in livestock products, and will be severer in the future. Basic strategies for higher productivity and safety of livestock products are listed as follows ： 1. Protection from exotic diseases 2. Eradication of indigenous diseases 3. Development of new methods and techniques for control of animal diseases 4. Application of hygiene and management techniques 5. Safety evaluation of feedstuffs and animal drugs, and 6. Development of technique and regulations for prevention and monitoring of residue of harmful chemicals.

• KDI Journal of Economic Policy
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• 제34권2호
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• pp.173-204
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• 2012

본고는 산출물시장이 과점적이고 동질적 상품이 거래되어 기업들이 생산량 경쟁을 하고 배출권시장은 완전경쟁적일 경우, 기업이 지출하는 저감투자량의 적절성을 이론적으로 분석한다. 산출물시장이 완전경쟁적일 때와는 달리 저감투자는 직접적으로 배출비용을 줄이는 효과 이외에 다른 기업의 산출물을 줄이는 간접적 효과를 발생시킨다. 균형하에서의 저감투자량은 사회적으로 최적인 저감투자량에 비해 생산량 대비 과잉투자를 야기하여 투자배분을 왜곡한다. 본고는 또한 불완전경쟁시장이 배출권 거래제도하에서 발생시킬 수 있는 비효율성의 제반 요인들을 검토하고 정책적 시사점을 제시한다.

• 한국전자거래학회지
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• 제5권2호
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• pp.1-25
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• 2000

The utilization of Internet, which started only at the level of advertisement, has been gradually expanding its application areas as the trial commercial transaction becomes successful, the password-coding technology which removes the risks on the cyber transaction develops, the electronic money appears and other various related technologies progress. Following this trend the securities industry has been experiencing changes along with efforts to use it commercially. This study is to analyze the work of cyber securities companies on the basis of the theoretical background through preceding studies and literature and also analyze the common and different reasons for superiority-securing strategy in competition along with problems and their reasons. And also the objective of this study is to offer new superiority-securing strategy in competition and problem-solving strategy.

• 한국데이타베이스학회:학술대회논문집
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• 한국데이타베이스학회 2000년도 추계학술대회 E-Business와 정보보안
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• pp.289-296
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• 2000

The utilization of Internet, which started only at the level of advertisement, has been gradually expanding its application areas as the trial commercial transaction becomes successful, the password-coding technology which removes the risks on the cyber transaction develops, the electronic money appears and other various related technologies progress. Following this trend the securities industry has been experiencing changes along with efforts to use it commercially. This study is to analyze the work of cyber securities companies on the basis of the theoretical background through preceding studies and literature and also analyze the common and different reasons for superiority-securing strategy in competition along with problems and their reasons. And also the objective of this study is to offer new superiority-securing strategy in competition and problem-solving strategy.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1995년도 춘계공동학술대회논문집; 전남대학교; 28-29 Apr. 1995
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• pp.363-374
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• 1995

A duopoly model of R&D competition is presented to investigate whether an equilibrium R&D level with flexible spillovers is insufficient (or excessive) from the viewpoint of social welfare. The model focus on flexible spillovers which include much portion of externality occurring in R&D activity. Flexible spillovers refer to the spillovers that vary with industry equilibrium level of R&D. Innovating firms have incentives to cooperate in R&D in the presence of large spillovers. For any symmetric R&D profile, socially desirable equilibrium output is larger than equilibrium output produced in duopoly. Cooperative equilibrium R&D investment is observed to be socially insufficient in terms of welfare criterion irrespective of the magnitude of spillovers. While noncooperative R&D yields socially excessive expenditure on research project for a certain range of spillovers.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2012년도 춘계학술발표대회
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• pp.1176-1179
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• 2012

To ensure the correctness of high performance satisfiability (SAT) solvers, several proof formats have been proposed. SAT solvers can report a formula being unsatisfiable with a proof, which can be independently verified by a trusted proof checker. Among the proof formats accepted at the SAT competition, the Reverse Unit Propagation (RUP) format is considered the most popular. However, the official proof checker was not efficient and failed to check many of the proofs at the competition. This inefficiency is one of the drawbacks of SAT proof checking. In this paper, I introduce a work-in-progress project, vercheck to implement an efficient RUP checker using modern SAT solving techniques. Even though my implementation is larger and more complex, the level of trust is preserved by statically verifying the correctness of the code. The vercheck program is written in GURU, a dependently typed functional programming language with a low-level resource management feature.

• 디지털융복합연구
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• 제13권10호
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• pp.405-413
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• 2015

본 연구는 지방의료원의 경쟁 수준의 정도를 측정하여 재무성과와의 관련성 분석 후 효과적인 경영전략을 수립할 수 있는 기초자료를 제공하는데 있다. 조사기간은 지방의료원의 HHI(허핀달-허쉬만)지수와 경영성과를 알 수 있는 2010년부터 2012년까지 3년간을 평가기준으로 하였으며, 총 31개의 의료원을 조사대상으로 선정하였다. 결론을 보면, 집중시장일수록 재무성과가 높은 것으로 나타났으며, 지역 내 경쟁정도와 재무지표 간의 유의한 상관관계가 나타났다. 지방의료원은 지역 내 경쟁력과 공공성을 확보하기 위한 정책수립과 실행을 위해서는 지역 의료시장의 경쟁정도와 그에 따른 추이를 파악이 요구된다. 지방의료원이 타 의료기관관의 경쟁력의 우위를 선점하기 위해서는 의료서비스 제공의 향상과 자본 투자 등의 선별적인 전략이 고려되어야 할 것이다.

• 한국병원경영학회지
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• 제21권2호
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• pp.37-49
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• 2016

The purpose of this study is to investigate the level of competition between Public Health Centers (PHCs) and private clinics (PCs) by examining the number of patients that used PHCs vs. PCs, estimating the total amount of revenue generated from outpatient services at both PHCs and PCs, thereby analyzing the financial impacts on PCs derived from the PHCs. We utilized 2011 National Inpatient Sample data (NIS). Using the 20 table containing general information on each individual claims, we integrate it with the 40 table which contains all the diagnostic codes for each claim. Then, we disaggregate the bundled claims into the original individual claims. Overall, 3.1% of outpatient visits are made at PHCs while the rest was made at the PCs (96.9%). Among the total claim costs of 6.34 billion USD (as of 2011), PHCs occupy 2.0% (124 million USD), and 98.0% are contributed to PCs (6.21 billion USD). The estimated economic losses of PCs due to PHCs are summarized as follow; the maximum potential loss is estimated at 198 million USD in total and 7,099 USD per clinic when we include all patient types; the minimum loss is estimated at 71 million USD in total and 2,540 USD per clinic where Medical Aid recipients and the elderly (aged 65 and over) are excluded. Our results confirm the potential economic effect on PCs due to PHCs providing outpatient services. PCs and PHCs are the most important players providing primary care in Korea. Unnecessary competition between PCs and PHCs is not desirable. Health authorities should carefully examine the healthcare services currently provided by PHCs and their impacts on PCs.

• 한국산학기술학회논문지
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• 제17권1호
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• pp.225-233
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• 2016

본 논문은 은행산업의 경쟁정도가 개별은행의 위험추구 성향에 미치는 영향을 파악하기 위한 실증분석을 수행하였다. 기존 연구에서 위험추구 성향을 나타내는 지표로 주로 사용하였던 고정이하여신비율은 위험을 사후적으로 반영하는 지표라는 점에서 한계점을 지니고 있는데 이에 본 연구에서는 위험을 사전적으로 측정하는 자산위험도를 새로운 위험추구의 지표로 제안하고 이를 이용하여 분석을 수행하였으며 그 결과 은행의 경쟁정도와 위험추구 성향 간에는 음의 관계가 존재함을 확인할 수 있었다. 한편 고정이하여신비율을 위험추구의 지표로 사용하여 동일한 분석을 수행한 경우에는 정반대의 결과가 나타나는 흥미로운 사실을 발견할 수 있었다. 즉 위험추구의 지표로 어떤 변수를 선택하는지에 따라 은행산업의 경쟁도와 위험추구의 관계는 정반대의 결과가 나타나고 있다는 것인데 이는 논리적으로 어떠한 지표가 은행의 위험추구 성향을 더 잘 나타낼 수 있는 것인가를 살펴봄으로써 해결할 수 있을 것이다. 자산위험도는 위험추구성향이라는 개념에 논리적으로 더욱 잘 부합하며 또한 위험추구성향 외의 요인에 의한 영향을 덜 받을 것이라는 측면에서 더 적절한 지표인 것으로 판단된다.