• 한국융합학회논문지
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• 제4권4호
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• pp.1-5
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• 2013

본 연구는 회수물류의 실행의 중요성이 강조되고 있는 가운데, 기업이 보유한 회수물류역량이 공급사슬상의 협력기업들 간의 관계에서 기업의 수익을 향상시키며, 나아가 협력기업들 간의 협력만족도에도 긍정적인 영향을 미칠 수 있음을 보이고자 한다. 회수물류역량에 관한 선행연구들에서는 주로 최종조립자와 소비자간의 관계에서만 회수물류의 중요성을 다루고 있을 뿐 공급사슬 상의 협력 기업들 간의 관계에서 회수물류역량의 역할에 대한 연구는 거의 이루어지지 않은 실정이다. 회수물류의 실행은 자산가치를 복구하는 효과와, 재활용을 통한 비용감소 효과 및 이를 통한 이윤의 극대화의 성과와 관계가 있다. 이러한 회수물류역량은 협력기업들 간의 수익에도 영향을 미칠 뿐 아니라 협력 기업들 간의 협력 만족도에도 긍정적인 영향을 미칠 것으로 기대된다.

• 제어로봇시스템학회논문지
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• 제17권4호
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• pp.304-312
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• 2011

In an oligopolistic market, only a few firms account for most or all of total production, e.g., automobile, steel, and computer industries. For a dynamic oligopolistic market with two firms competing in quantities, we show that supervisory control theory of discrete event systems provides a novel approach to solve the dynamic oligopoly problem with the aim of maximizing the profits of both firms. Specifically, we show that the controllability, observability, and nonblocking property (which are the core concepts in supervisory control theory) are the necessary and sufficient conditions for two oligopolistic firms in disequilibrium to eventually reach equilibrium states of maximizing the profits of both firms.

• 한국경영과학회지
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• 제14권2호
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• pp.43-52
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• 1989

The present paper analyzes performance of a variant of rate-of-return regulation called the ex-post adjustment regulation put in effect in the Korean petroleum refinery sector. Unlike the traditional rate-of-return regulation on a monopoly, the regulation is first for the oligopolistic industry as a whole and second of the ex post nature. Under the regulation, at the end of each year, each firm is responsible to pay a certain portion of the excess of the total realized profits in the industry over the allowed profits. It is shown that if the excess profits are completely collected(including the interests), the social optimum can be realized. When only a portion of the excess profits can be collected, the regulation generally increases consumer surplus by making the firms more competitive. Each individual firm's production under the regulation depends on whether the firm's output is regarded as a strategic substitute or complement of other firms'output.

• 한국경영정보학회:학술대회논문집
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• 한국경영정보학회 2007년도 International Conference
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• pp.141-146
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• 2007

The importance of the net-based customer service in delivering supplementary after-sale services associated with product has been well documented. The strategic advantages of a well-implemented the net-based customer service are enhanced customer loyalty and higher lock-in of customers, and the resulting reduction in competition and the consequent increase in profits. However, not all customers utilize such the net-based customer service. This is partly due to the e-commerce divide, and partly due to privacy and security concerns of the customer for sharing personal information with firms. The limited level of customer adoption of the net-based customer service affects the firm profits and the customers' welfare. We use a game-theoretic model in which we model the net-based customer service system as a mechanism to enhance customers' loyalty. We find that an increase in adoption of the net-based customer service by the customer base is not always desirable for firms. and that customers who utilize such services are better off only when the overall adoption is limited.

• 대한전기학회논문지:전력기술부문A
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• 제53권1호
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• pp.67-72
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• 2004

This paper addresses the bidding strategies of generating firms in a competitive market where the firms are provided with payment for generating reactive power. Reactive support for voltage control is an integral and critical part of power system operations. Since reactive support is unbundled in a competitive market under open access transmission, it is treated as one of ancillary services. The operation costs and opportunity costs for reactive support are compensated by payment to the firms, hence their bidding strategies will be affected. The opportunity costs are evaluated from the foregone profits of a generator in making sales in real power market by providing reactive support instead of real power. Game theory approach is used to analysis the transaction strategies of real power by the bimatrix method in this paper. Through computing the Nash equilibrium in a sample system, an incentive of a generator for improving the reactive generating capacity is found to be effective and the variations of the profits are analyzed as the demand power factor changes.

• KDI Journal of Economic Policy
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• 제14권3호
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• pp.3-21
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• 1992

기술경쟁과 생산경쟁에 범위(範圍)의 경제(經濟)가 존재하고, 두 기업이 생산경쟁에서 전략적(戰略的) 대체관계(代替關係)에 있는 경우 경쟁기업간의 기술경쟁(技術競爭)은 적극적인 양상을 띠게 된다. 생산단계의 경쟁자를 견제하기 위환 전략적 대응으로 기술경쟁단계(技術競爭段階)에서 과잉된 기술투자(技術投資)와 기술이전(技術移轉)이 유발되는 것이다. 또한 과잉된 기술경쟁은 제품가격(製品價格)의 급속한 하락(下落)으로 연결된다. 이와 같은 맥락에서 최근 보도 된 바 있는 국산화 신제품에 대한 외국기업의 저가공세(低價攻勢)는 과점적(寡占的) 시장(市場)에서 나타나는 자연스런 현상으로 이해할 수 있다. 또한 기술경쟁단계에서 기술개발투자(技術開發投資)와 기술이전(技術移轉)은 전략적(戰略的) 대체관계(代替關係)뿐만 아니라 전략적(戰略的) 보완관계(補完關係)를 가질 수 있다. 이와 같이 대조적인 전략적 대응관계가 가능하기 때문에 국산화(國産化) 노력(努力)을 견제하고 국내시장(國內市場) 점유율(占有率)을 유지하기 위해 저가공세를 취하는 외국기업에 대한 대응방안(對應方案)으로 검토되고 있는 수입품에 대한 조정관세(調整關稅), 국산화 신제품에 대한 수요창출(需要創出), 기술투자의 채산성 보장을 위한 보조금지급(補助金支給) 등과 같은 정책변수(政策變數) 활용(活用)이 바람직한가를 사전적으로 규정하기는 어렵다. 즉 전략적 무역(산업)정책이론에서 주장하는 것처럼 관세부과(關稅賦課)나 보조금지급(補助金支給)이 국내기업의 시장점유율(市場占有率)과 기술투자규모(技術投資規模)를 향상 증대시키는 것은 아니라는 것이다.

• 기술혁신연구
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• 제11권2호
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• pp.27-39
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• 2003

This study empirically examines the relationship between technology licensing and licetnsee firms' profitability. A significant positive effect of licensing on profitability is generally demonstrated in both the short run and the long run. Further, the magnitude of positive effect is bigger in the long run than that in the short run. The paper suggest that, for firms, aggressive management strategy of collaborating with technology holders through licensing agreements is beneficial. It also argues that transferred technology requires time to be implemented, modified and mastered better by companies.

• 수산경영론집
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• 제26권1호
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• pp.29-40
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• 1995

Since the coastal countries, such as Unite States and other Latin America countries, proclaimed their 200 nautical mile Exclusive Economic Zone, these countries have attention to the need to develop effective coastal management and resource conservation But these countries often perceive themselves as being in competition with each other for profitable for the expansion of the vested EEZ. In such a situation, Exclusive Economic Zone expansion can appear as attractive policy tools in a coastal fishing firms in a noncooperative rivalries with pelagic countries, enable them to expand their fishing share and earn more profits. In reality, the coastal countries strategic Exclusive Economic Zone expansion change the initial condition of the game that both countries' fishing firms play. In this case, the coastal countries' fishing, such as South Korea, Japan and others, act as a followers. As result, the coastal countries' welfare is improved because of pelagic countries profit share shifts to the coastal countries profit share. In this paper, we find that coastal countries strategic EEZ expansion policy may not improve the coastal contries welfare if the shifting profits are dominated by the direct lobbying costs and related resource depletion.

• The Journal of Asian Finance, Economics and Business
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• 제8권7호
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• pp.365-373
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• 2021

This paper investigates the presence of momentum profits in the Saudi stock market. The study applied a quantitative method by utilizing monthly closing prices of 194 listed firms on Tadawal (Saudi Stock Market). The data from January 2010 to February 2019 is taken from the Tadawal market database for analysis. The sample is further divided into two equal sub-samples based on the structural changes that occurred in the Saudi stock market. Moreover, the high- and low-value traded portfolios are also constructed to examine the presence of momentum profits. Sixteen investment strategies are formed for each sample. The results show a very strong presence of momentum profits in the Saudi stock market for the full sample as well as for the sub-samples. The momentum profits are observed for a longer investment horizon. The results confirm that the short or medium-term formation of portfolios produces negative momentum returns for high-value traded stocks. The low-value traded stocks portfolios give similar results to the full sample results in terms of momentum profits. The results suggest that an investor should keep an eye on the past performance of desired stocks for at least three-nine months in which they are willing to invest.

• 한국기술혁신학회:학술대회논문집
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• 한국기술혁신학회 2014년도 추계 학술대회 논문집
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• pp.29-46
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• 2014