• Management Science and Financial Engineering
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• 제16권2호
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• pp.1-15
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• 2010

Digital convergence which means the convergence of industry areas related to digital technologies is an important phenomenon in business, which will decide the fates of firms in the near future. The only firms which can create synergy effects from digital convergence are expected to be the winners in the fierce competition of digital convergence era. In our analysis, we examine the strategy of an integrated firm which has businesses in two different industry areas which are related to each other. By using a game theoretical model, we show how the integrated firm can win over two single separated firms which have business in only one industry area each by leveraging the two businesses the integrated firm has. In our welfare analysis, we also show that this convergence may be even beneficial to consumers, which seems counter-intuitive to social concerns about anti-competitive behaviors by integrated firms. Additionally, we study comparison between industry convergence and product convergence.

• Management Science and Financial Engineering
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• 제2권1호
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• pp.147-176
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• 1996

The main objective of this study is to uncover the differences in the programming behavior between methodology creators and methodology users. We conducted an experiment with methodology creators who have invented one of the major object-oriented methodologies and with professional programmers who have used the same methodology for their software-development projects. In order to explain the difference between the two groups, we propose a theoretical framework that views programming as search in four problem spaces: representation, rule, instance and paradigm spaces. The main problem spaces in programming are the representation and rule spaces, while the paradigm and instance spaces are the supporting spaces. The results of the experiment showed that the methodology creators mostly adopted the paradigm space as their supporting space, while the methodology users chose the instance space as their supporting space. This difference in terms of the supporting space leads to different search behaviors in the main problem spaces, which in turn resulted in different final programs and performance.

• 한국시스템다이내믹스연구
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• 제3권1호
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• pp.105-129
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• 2002

IT companies make a lot of efforts for sharing and utilizing of experiences of their members and transforming them into the organizational knowledge as a competitive core. But they face a dilemma that they have to spend time and financial resource to perform activities around knowledge management for the long-term gains, while carrying field-works for making short-term profits. As an initial attempt to tackle this managerial problem, this paper try to investigate the mechanism of knowledge management in a small IT company in Korea with a synthetic view-point using system dynamics simulation model. It depicts the dynamic behaviors of knowledge management and presents some findings of political leverage. Although it has to be replenished further, the scheme for the dynamism of knowledge management and the findings presented in the paper could be useful for the decision makers particularly of knowledge-intensive organizations

• Management Science and Financial Engineering
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• 제19권2호
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• pp.1-11
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• 2013

An interesting puzzle in business practices is that although many researchers emphasize the benefits of a revenue-sharing contract, a wholesale contract has remained to be the most common contractual form. By introducing the concept of unobservable efforts, we examine the contractual efficiency of a wholesale contract and a revenue-sharing contract. The multi-task agency model and experimental design approach are used to analyze the relationship between the contractual efficiency and parameters. A major finding of our study is that a wholesale contract coordinates unobservable efforts, while it fails to coordinate the order quantity decision. Because unobservable efforts have mixed effects on the contractual efficiency, the superiority of contract type depends on parameters. This finding implies that a wholesale contract can be a competitive contract, especially when unobservable efforts are heavily involved. Our conclusion is that the current popularity of a wholesale contract is manager's rational response to complex supply chain environments rather than irrational behaviors.

• Management Science and Financial Engineering
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• 제21권1호
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• pp.19-24
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• 2015

As decision makers do not make optimal decisions in practice despite the existence of optimal solutions in many models, there has been a rising interest in behavioral operations management recently. In this study, we aim for a comparative study to analyze the inventory decisions in Korea, America, and China, by conducting the same newsvendor experiment in Korea and compare the results with those of previous studies. From the comparative analysis, some national characteristics in decision-making processes have been observed but there is lowly significant difference in order quantities among the three groups. Korean students show lower level of understanding in demand distributions and tendencies of anchoring on the mean demand and being risk-averse. The finding that individuals make their own decisions differently based on their different behaviors suggests that we need to consider individual approach in analyzing human decision-making processes rather than adapting aggregate approach.

• 디지털융복합연구
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• 제7권4호
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• pp.21-30
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• 2009

Public and private sectors are experiencing a worldwide economic depression originated from the failure of U.S. financial system. At a harsh time like this, policy-makers need to understand more about the effects of the creative leadership in the digital era. However, there haven't been enough studies performed on this field in Korea. This study aims to fill the blank and learn more about the correlation between creative leadership and organizational effectiveness. To achieve this goal, various previous leadership studies have been reviewed in terms of organizational behaviors, comparative culture studies, and etc. In the end, this study argues previous qualitative studies' weaknesses and limitations, and tries to suggest new aspect of qualitative research method of creative leadership.

• Journal of applied mathematics & informatics
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• 제41권1호
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• pp.33-50
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• 2023

Foreign exchange options are derivative financial instruments that can exchange one currency for another at a prescribed exchange rate on a specified date. In this study, we examine the analytic formulas for vulnerable foreign exchange options based on multi-scale stochastic volatility driven by two diffusion processes: a fast mean-reverting process and a slow mean-reverting process. In particular, we take advantage of the asymptotic analysis and the technique of the Mellin transform on the partial differential equation (PDE) with respect to the option price, to derive approximated prices that are combined with a leading order price and two correction term prices. To verify the price accuracy of the approximated solutions, we utilize the Monte Carlo method. Furthermore, in the numerical experiments, we investigate the behaviors of the vulnerable foreign exchange options prices in terms of model parameters and the sensitivities of the stochastic volatility factors to the option price.

• 재무관리연구
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• 제27권2호
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• pp.1-33
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• 2010

본 연구는 IPO 시장에서 나타나는 높은 초기수익률 및 장기저성과 현상이 주로 핫마켓상황에서 신규공개한 기업에 의해 야기되는지 분석하고, 이러한 핫마켓상황 공모 시장의 이상현상을 낙관적 투자자의 기대라는 행태적 관점에서 분석하였다. 특히, 낙관적 투자자의 기대가 영향을 미치는 가격결정메커니즘 측면과 낙관적 투자자의 기대를 이용하고자 하는 기업의 기회주의적 행동 측면으로 구분하여 살펴보았다. 국내 선행연구는 이상현상에 대한 원인을 버블로 해석할 뿐 이에 대한 체계적 실증연구가 미흡하다. 본 연구는 2001년부터 2005년 동안 코스닥시장에 신규상장을 마친 432개 기업들을 대상으로 하였으며, 이들 표본을 시장상황에 따라 '핫마켓 IPO'와 '콜드마켓 IPO'로 구분하여 비교 분석하였다. 분석결과 전체 IPO 시장의 이상현상은 대부분 '핫마켓 IPO'에 의한 것으로 생각되었다. 그리고 핫마켓에 존재하는 낙관적 투자자의 기대는 초기수익률을 높이지만 장기성과에는 부(-)의 영향을 미침으로써 핫마켓상황의 낙관적 투자자의 기대가 공모 시장의 이상현상을 초래하는 것으로 나타났다. 마지막으로, 코스닥시장의 핫마켓상황은 질적 여건이 좋지 않은 기업들에게 단지 기회로 이 용된다는 '기회의 창' 가설을 지지하는 증거는 발견되지 않았다.

• 유통과학연구
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• 제14권6호
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• pp.75-80
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• 2016

Purpose - A growing demand for sustainability reporting has placed pressure on firms with non-financial information that affects firm valuation, growth, and development. In particular, a number of researchers have investigated various topics in Corporate Social Responsibility (CSR), non-financial information. Prior studies suggest that CSR may affect corporate outcomes like corporate reporting, financial performance, and disclosures. However, the results from prior studies are not clear whether CSR affects corporate outcomes. This is partially due to the measurement issues with CSR. In this study, we examine whether CSR affects the quality of corporate reporting, one of the popular measures in corporate outcomes. We find an evidence that CSR positively affects the quality of corporate reporting. Research design, data, and methodology - In this study, we collected a unique dataset of CSR from MSCI. Total 169 firms listed in the Korean Stock Exchange from 2011 to 2014 were collected and analysed with the detailed CSR reports. Using a correlation test, we found a weak association between CSR and the quality of corporate reporting. However, the regression tests provided a strong relationship between CSR and the quality of corporate reporting after controlling for other variables that may affect the quality of corporate reporting. Additionally, we calculated the t-statistics based on heteroskedaticity-consistent standard errors (White, 1980). Results - Before we run the regression test, we sort the measures of the two dependent variables into each rating of CSR (from AAA to CCC). The results indicate that the quality of corporate reporting measured by discretionary accruals and performance-matched discretionary accruals monotonically decrease as the CSR ratings increase. This supports our hypothesis. In the regression tests, the coefficient on MJDA (PMDA) is -0.183 (-0.173) and significant at the 5% level. We can interpret the results as CSR affecting the quality of corporate reporting in positive ways. Other coefficients on control variables are consistent with prior studies. For example, the coefficients on both LOSS and LEV are positive and significant at conventional level, meaning that firms with financial difficulty may harm their quality of corporate reporting. Conclusion - We found an evidence that CSR is positively associated with the quality of corporate reporting. This study contributes to the literature in various ways. First, this study extends the line of CSR research by providing additional evidence in the setting of ethical behaviors by managements. This is consistent with the hypothesis and supports the results of prior studies. Second, to the best of my knowledge, this is the first study using the MSCI CSR ratings. In contrast with prior studies using different measures of CSR, the MSCI CSR ratings allow us to provide in-depth analysis. Third, the additional measure of dependent variable (PMDA) allows us to improve the robustness of our results. Overall, the results provided this study to extend the findings in prior studies by providing incremental evidence.

• 국제지역연구
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• 제22권1호
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• pp.123-140
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• 2018

본고는 방글라데시 은행 대출의 군집행동을 실증분석하였다. 실증분석에는 2001년부터 2014년 2분기까지 국책은행, 국내민간은행, 외국계은행, 이슬람은행 등 방글라데시 상업은행의 총대출, 도시대출, 농촌대출 패널자료를 사용하였다. 국내민간은행과 외국계은행의 총대출 및 도시대출의 경우 2008년 글로벌금융위기 기간 동안에 대출 동조현상이 뚜렷이 나타났다. 이는 이들 은행유형이 국책은행보다 수익성을 중시하고 정부 및 중앙은행으로부터 엄격한 감독규제을 적용받으므로 불확실성이 커진 금융위기기간에 은행이 독자적으로 대출태도를 결정하기보다는 자신과 유사한 은행의 대출결정을 참조하면서 대출태도를 결정하였음을 보여준다. 반면, 이슬람은행의 경우 2002년부터 2003년에 이르는 기간에 대출 쏠림현상이 커졌으며, 2008년 금융위기기간에 특별한 쏠림현상을 보이지 않았다. 이는 기존문헌에서 지적하듯이 이슬람은행의 수익 및 영업 구조가 일반 은행과 다르기 때문으로 해석할 수 있다. 한편, 농촌대출의 경우 군집행동의 패턴이 총대출 및 도시대출과 상당히 달랐는데, 무엇보다도 군집행동이 지속되지 않고 단속적으로 발생하였다는 것이 큰 특징이다. 이러한 차이점은 농촌 대출의 특성에 기인한다. 즉, 농업종사자들의 대출상환능력은 과거 대출이력에 기반한 신용도보다는 해당 연도의 작황에 따라 결정되고, 대출 주기가 농사주기와 연동되어 대출기간이 짧다. 따라서 대출의 군집행동과 같은 일정 대출패턴이 중장기간 발생하지 않고 단속적으로 발생한다고 이해할 수 있다. 마지막으로, 대출 연관성이 은행유형간에 존재하는 지를 알아본 결과, 국책은행, 외국계은행, 이슬람은행의 대출 결정은 국내민간은행의 대출증감에 영향을 받는 것으로 나타났다. 이를 통해 국내민간은행 대출결정이 대출시장의 불확실성을 완화시키는 정보로서의 기능을 한다는 것을 알 수 있다.