• 한국경영과학회지
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• 제19권2호
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• pp.45-56
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• 1994

This paper the profit maximizing order quantity model to the symmetric oligopoly consisting of sellers of a homogeneous product who compete with each other for the same potential buyers. Buyers are classified by type, each selecting an optimal purchase quantity in response to the nonlinear quantity discount pricing schedule given by the sellers. Symmetric equilibrium and the economic quantities that sellers must determine are analysed in a Cournot framework, which explicitly depend on the number of sellers. Economic implications are obtianed from the optimality conditions based on themarket share paraments which are used to characterize the competitior's marketing strategy.

• 한국항만경제학회지
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• 제31권3호
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• pp.93-105
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• 2015

본 연구는 최근까지 이루어진 공항의 집중도 및 항공 유동성 자료를 바탕으로 한 선행연구를 고찰하고, 항공 및 공항의 환경변화에 따라 변화되고 있는 아시아 주요공항의 화물 물동량 구조를 파악하였다. 또한, 아시아 지역에서의 화물 전이 현상을 분석하여, 경쟁공항들의 경쟁수준을 파악하여 향후 전략적 시사점을 제시하는 것을 본 연구의 목적으로 하였다. 현재 동북아 권역의 과점화는 꾸준히 약화되고 있으나 이는 중국공항의 성장에 따른 결과이며 이 지역에서의 푸동공항은 지속적인 물동량 확대는 새로운 과점화 증대 현상도 일어날 수 있다는 것을 시사한다. 또한, 2000년부터 2012년까지 항공화물 변이 효과분석 결과에 의하면 인천공항의 항공화물은 약 42만 톤이, 나리타공항은 약 128만 톤이 동북아 권역의 다른 공항으로 전이된 것으로 분석되었다. 이는 일부가 직접경쟁이 가능한 푸동공항으로 전이된 것으로 판단할 수 있어 향후 전이가 지속적으로 창출되는 원인과 이유에 대한 추후 연구도 필요한 것으로 판단된다.

• Asia Marketing Journal
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• 제6권2호
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• pp.55-68
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• 2004

본 연구는 마케팅믹스변수와 시장점유율간의 관계를 파악하는 시장점유율모형 중 논리적 타당성으로 주목을 받고 있는 MCI (Multiplicative Competitive Interaction) 모형의 특성과 적용방법을 실증적 자료를 이용해 설명하려는 데 목적이 있다. MCI 모형은 유인력모형의 한 형태이며, Nakanishi and Cooper(1982)에 의해 비선형모형을 선형모형으로 전환시켜 모수를 추정할 수 있는 방안이 제시되면서 활용가능성이 높아졌다. 본 연구에서는 MCI 모형의 적용과정을 국내 소비재산업의 마케팅담당자가 입수가능한 다양한 원천의 마케팅자료를 종합적으로 이용하여 제시하였다. 이 과정에서 선형화된 MCI 모형의 모수 추정에 있어 Equity 추정방식을 적용하여 독립변수로 활용된 마케팅믹스 변수들간 다중공선성 문제의 해결방안도 제시하였다. 국내 껌시장에 대해 적용된 분석결과, 시장점유율 증대에 영향을 미치는 마케팅믹스변수들을 찾아낼 수 있었으며, 마케팅담당자들에게 유용한 시사점을 제시해줄 수 있었다.

• Journal of Microbiology and Biotechnology
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• 제24권12호
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• pp.1673-1678
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• 2014

The interactive inhibitory effects of pH and chloride on the catalysis of laccase from Trametes versicolor were investigated by studying the alteration of inhibition characteristics of sodium chloride at different pHs for the oxidation of 2,2'-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid). At pH 3.0, the addition of sodium chloride (50 mM) brought about a 40-fold increase in $K{_m}^{app}$ and a 4-fold decrease in $V_{max}{^{app}}$. As the pH increased to 7.0, the inhibitory effects of sodium chloride became significantly weakened. The mixed-inhibition mechanism was successfully used to quantitatively estimate the competitive and uncompetitive inhibition strengths by chloride at two different pHs (pH 3.0 and 6.0). At pH 3.0, the competitive inhibition constant, $K_i$, was 0.35 mM, whereas the uncompetitive inhibition constant, $K{_i}^{\prime}$, was 18.1 mM, indicating that the major cause of the laccase inhibition by chloride is due to the competitive inhibition step. At a higher pH of 6.0, where the inhibition of the laccase by hydroxide ions takes effect, the inhibition of the laccase by chloride diminished to a great extent, showing increased values of both the competitive inhibition constant ($K_i=23.7mM$) and uncompetitive inhibition constant ($K{_i}^{\prime}=324mM$). These kinetic results evidenced that the hydroxide anion and chloride share a common mechanism to inhibit the laccase activity.

• 한국항만경제학회지
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• 제25권3호
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• pp.283-302
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• 2009

본 연구는 본격적인 개방시대에 즈음하여 우리나라 수산업의 교역 현황과 수산업의 수출입 비중이 높은 대중국 수산업 경쟁력 분석을 실시하고, 수산물 유통구조의 문제점 및 수산업 발전을 위한 선진화 방안을 도출함을 연구의 목적으로 한다. 우리나라의 수산업 유통체계를 저비용 고효율 체제로 개선하기 위해서 정책적 노력은 정부차원에서 계속되고 있으나 수산물 유통현장에서는 아직도 많은 모순들이 끊임없이 발생하고 있다. 이러한 현실에서 '수산물 유통시장을 현실에 맞게 재편하려는 새로운 시각'이 필요하다는 것이다. 다시 말하면 소비지 도매시장의 거래제도가 수산물 유통의 전부는 아니라는 것이다. 오히려 수산물 유통구조를 개선하려는 정책적 포커스가 유통시장(산지위판장, 소비지 도매시장 등)의 전체구조를 재편하려는 부분으로 전환되어야 한다. 또한 개방화 시대에 우리나라 수산업의 정책 방향 마련을 위해서는 수산업의 경쟁 력 등을 비교 평가할 필요가 있으며 이를 근거로 제한된 정책자원을 선택과 집중으로 효율적으로 투입하기 위해서이다.

• Journal of Ship and Ocean Technology
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• 제11권2호
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• pp.34-45
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• 2007

Environment of marine transportation market is changing rapidly. Due to globalization of world economy, marine transportation of cargos, especially trade using container boxes, is increasing dramatically. Fierce competition in the global market of container transportation forces the shipping industry to seek the economy of scale to reduce transportation cost, and drives the merge and alliance of liner shipping companies. Mega-sized container ships, having capacity over 10,000 TEU, were introduced, and appeared recently, in order to reduce the unit transportation cost. Korean shipping and shipbuilding companies are competitive, and have considerable market share in the global market. Even though both industries are inter-connected through ships and have many common interests in order to enlarge the global market share, inter-relation between two industries is surprisingly insignificant. In this paper current issues in the process of environmental change of marine cargo transportation are reviewed, and inter-relation of shipping and shipbuilding industries is discussed. Suggestions for inter-related development of Korean shipping and shipbuilding industries are given, and means for mutually beneficial collaboration are suggested.

• 지식경영연구
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• 제18권2호
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• pp.129-157
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• 2017

Knowledge is important to both individuals and organizations. Individuals can have the opportunity to have bargaining power within their organisations by having knowledge of know-how and ideas. Having ample knowledge of the organization can bring about advantages in securing competitive advantage. Organization wants to encourage employees to share knowledge. Despite the efforts to enhance knowledge sharing, often the effort failed. Employees are unwilling to share their knowledge or hide their knowledge. The purpose of this study is to clarify the relationship between knowledge hiding and knowledge sharing based on exploring the influence factors of knowledge hiding and knowledge sharing. As a result, the influence factors of knowledge hiding and knowledge sharing were different. The influences of knowledge hiding influenced knowledge hiding only and did not affect knowledge sharing. This implies that knowledge hiding and knowledge sharing do not exist on a single line but exist independently of each other, such as 'Herzberg's two-factor theory'. This study suggests that knowledge hiding is a field of interest as well as knowledge sharing. In practice, it is suggested that the concept of promoting knowledge sharing is not a way to reduce knowledge hiding, so the two concepts should be managed separately.

• 유통과학연구
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• 제13권7호
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• pp.11-18
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• 2015

Purpose - This paper reviews the changes in the ship export and import structure between Korea and China. It utilizes the comparative advantage trade theory to analyze time-series statistical data from the market share index, revealed comparative advantage index (RCA), and trade specialization index(TSI). Research design, data, and methodology - Based on their economic phases, both Korea and China have similar country characteristics. The purpose of this research is to understand the two country's trade structures to fortify the Korea-Sino economic relationship including verifying what is working and what is not. Results - Based on the analysis, bilateral economic activity to achieve a plus trade stimulus environment should be realized in the long run. Both countries should establish guarantee-free trade negotiations and boundaries instead of various non-tariff barriers. Conclusion - Reviewing the research, a sound competitive relationship can be grown for mutual benefit including export market diversification in the near future. The review of the Korea-Sino ship industry is keenly important and investigative research about it is timely because it is a major industry in each country.

• 한국조리학회지
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• 제23권4호
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• pp.175-184
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• 2017

In franchisee industry, it is essential for franchisors to share knowhow and also specialized knowledge in order to realize favorable relationship and performance between franchisors and franchisees. Particularly, in mature food service industry, companies' specialized knowledge and knowhow are the core competence to obtain competitive advantage. Therefore, to create performance, it is absolutely necessary to share information and knowledge among all the franchisees. The purpose of this study is to verify relationship between franchisors' information sharing perceived by food service franchise owners, relationship quality, and relationship performance. A survey was done to food service franchisees, and total 297 samples were used to analyze the structural equation model. According to the analysis results, food service franchise companies' information sharing is significantly correlated with quality of relationship with franchise owners in a positive way. Also, franchisors' knowledge sharing has significant influence on performance of relationship with franchisees in a positive way. The components of relationship quality, trust and immersion, all influence relationship performance. Based on the results, this author suggests several implications about food service franchise management and information sharing.

• Journal of Information Technology Applications and Management
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• 제28권3호
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• pp.31-48
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• 2021

Knowledge is a key resource for organizations to gain and maintain competitive advantage. Therefore, it is important for organizations to motivate employees to share knowledge with each other in order to achieve optimal performance of knowledge resources. Despite the efforts of organizations to share knowledge, knowledge hiding is still prevalent among employees. In this paper, we want to analyze the factors that may cause more general and pervasive knowledge-hiding behavior in organizations through empirical analysis. The results of this study show that, first, the relationship between team cohesion and knowledge hiding has been verified differently depending on the sub-behavior of knowledge hiding : playing dumb, evasive hiding, and rationalized hiding. Team cohesion has been shown to significantly reduce the playing dumb and evasive hiding. On the other hand, it was shown that team cohesion did not have a significant causal relationship with rationalized hiding. Second, the moderating effect of ethical leadership has been statistically significant in terms of team cohesion and relationships with playing dumb and evasive hiding. In other words, the higher the ethical leadership, the stronger the negative relationship between team cohesion and knowledge hiding. Finally, the theoretical and practical implications of this paper and future research directions are discussed.