• Animal Systematics, Evolution and Diversity
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• 제30권1호
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• pp.39-43
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• 2014

In this brief report, alternative time-varying diversification rate models were fitted onto the phylogeny of global amphibians by considering one-constant-rate (OCR), one-continuous-shift (OCS) and multiple-discrete- shifts (MDS) situations. The OCS diversification model was rejected by ${\gamma}$ statistic (${\gamma}=-5.556$, p<0.001), implying the existence of shifting diversification rates for global amphibian phylogeny. Through model selection, MDS diversification model outperformed OCS and OCR models using "laser" package under R environment. Moreover, MDS models, implemented using another R package "MEDUSA", indicated that there were sixteen shifts over the internal nodes for amphibian phylogeny. Conclusively, both OCS and MDS models are recommended to compare so as to better quantify rate-shifting trends of species diversification. MDS diversification models should be preferential for large phylogenies using "MEDUSA" package in which any arbitrary numbers of shifts are allowed to model.

• 벤처창업연구
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• 제13권4호
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• pp.129-137
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• 2018

4차산업혁명기를 맞이하여 파괴적 기술 출현이 빈번해지고 기업들은 기존 기술로는 생존이 어려운 변혁기를 맞이하여 기업들은 타개책으로 사업다각화를 통한 기업의 생존 또는 성장을 추구하고 있다. 중소기업들은 보유하고 있는 자원이 부족하여 정책금융 및 경영지원 등을 받아 사업다각화를 비롯한 기업의 성장을 추진하고 있으나 정책금융 및 경영지원에 대해 지각하고 있는 기업들만이 기업성과에 활용하고 있는 실정이다. 이러한 기업의 성장의 원동력으로 작용하는 정책금융 및 경영지원 등에 대한 지각가능성이 기업성과에 미치는 영향에 관한 연구가 부족한 편이다. 본 연구는 중소기업의 사업다각화가 기업성과에 미치는 영향 및 지각가능성이 조절변수로 기업성과에 미치는 영향을 실증하는 것이 목적이다. 본 연구를 위해 중소기업 20개의 기업 구성원의 525명을 대상으로 자료를 수집하였으며, 통계 분석은 회귀분석방법을 사용하여 분석을 수행하였다. 가설 검증 결과, 첫째, 중소기업의 사업다각화의 독립 변수인 제품다각화와 시장다각화가 기업성과에 정(+)의 영향 관계가 있는 것으로 나타났다. 둘째, 독립변수인, 사업다각화 중 제품다각화가 종속변수인 기업성과에 미치는 영향에 있어 조절변수인 지각가능성에 의해 조절되는 것으로 나타났으며, 사업다각화 중 시장다각화는 지각가능성에 의해 조절되지 않는 것으로 나타났다. 이러한 분석 결과는 중소기업이 기업성과를 만들어 내는데 제품다각화의 필요함을 시사하고 있다. 이상의 연구 결론 및 시사점을 논의한 후, 후속 연구를 위한 연구의 방향을 제시하였다.

• 4차산업연구
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• 제1권2호
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• pp.21-32
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• 2021

Purpose - International diversification, a critical issue in research and practice, undoubtedly represents a growth strategy with great potential impact on firm performance. Although the literature has widely examined the relationship between international diversification and firm performance in international business and strategic management research, it remains unconfirmed. This study, therefore, aims to clarify the relationship as it relates to information service firms. Research design, data and methodology - To examine the international diversification-performance relationship, this study uses a sample of major Korean service firms spread over four industries spanning a period of five years between 2005 and 2009. In this study. generalized least square was used to analyze the relationship between international diversification and performance of service firms. Result - The result showed the U-shaped curvilinear form between international diversification and performance in service firms. Especially, IT service firms may differ from other service firms that the negative effect of internationality may have weaker than other types of service firm. Conclusion - Based on the empirical results, the U-shape relationship between international diversification and performance is confirmed in Korea service firms. Furthermore, information service firm may reduce the initial internationalization cost by transferring codified and digitized information using information and communication technology, so that gain benefit from early international expansion.

• 농촌계획
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• 제27권4호
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• pp.1-12
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• 2021

The purpose of this study is to analyze the effect of crop diversification on farm households' agricultural income. Abundant literature have explored the determinants and efficient strategies for crop diversification. Yet, there is a paucity of research studies that empirically test the effectiveness of crop diversification as a profitable farm management strategy. Utilizing the 2015 Agricultural Census, this study adopts a quasi-experimental research design to compare the outcomes between farm households that opted for crop diversification and farm households that did not engage in such a strategy. In doing so, this study applies the Heckman Selection Model and the decomposition technique to address the problem of selection bias and to identify the causal effect. Our empirical results show that farms that implement diversification are more likely to earn higher agricultural income than non-diversified farms, although the difference would not be much substantial. This study concludes with several policy proposals to stabilize agricultural income in conjunction with crop diversification.

• KDI Journal of Economic Policy
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• 제46권1호
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• pp.53-89
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• 2024

The effects of the betterment of enforced intellectual property rights (IPRs) provisions on services export diversification are investigated. The analysis used an unbalanced panel dataset of 76 developing countries over the period of 1970-2014. The empirical analysis is based on the feasible generalized least squares estimator. It suggests that the implementation of weaker IPR protection fosters services export diversification in less developed countries (i.e., those whose real per capita incomes are less than US$US$ 1458.60), including those with a low level of export product upgrading. Conversely, in relatively advanced developing countries (countries whose real per capita income exceeds US$ 3356.80), including those with high levels of export product upgrading, the implementation of stronger IPR laws induces greater services export diversification. Finally, the analysis revealed the existence of a non-linear relationship between IPR protection and services export diversification. The implementation of stronger intellectual property laws spurs services export diversification in countries with high degree of IPR protection, especially when IPR protection exceeds a certain level, recorded here as having a score of 1.197. In contrast, in countries with weaker IPR protection, in particular those with IPR protection levels that score less than 0.915, it is rather the implementation of weaker intellectual property laws that promotes services export diversification.

• 아태비즈니스연구
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• 제14권4호
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• pp.151-161
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• 2023

Purpose - In this study, we examine the factors related to the asset allocation decisions of individual investors who 1) directly invest in stocks or bonds, 2) indirectly invest in various fund products (excluding CMA and MMF), and 3) invest in both products. Design/methodology/approach - We collect a sample of 3,000 individual investors and investigate the factors influencing investment behavior, especially the diversification tendency in asset allocation, with the "Investor Behavior Survey" that is conducted jointly by the Korea Financial Investment Association and the Korea Gallup Research Institute in 2011 and 2012. Findings - Our regression analyses estimate the marginal effects of various factors such as the amount of total financial assets, monthly income, occupation, age, and gender. The results reveal that male investors with manual labor occupations were less inclined to diversify their investments compared to female investors in office jobs. Additionally, higher monthly income is associated with a greater inclination toward diversification. Therefore, if a positive relationship exists between income and educational level, we may suggest that higher educational levels lead to a greater tendency for diversification. Research implications or Originality - Interestingly, investors who engage in direct investments tend to exhibit a weaker diversification tendency as the amount of their direct investment increases. On the other hand, investors who engage in both direct and indirect investments show a weaker diversification tendency as the amount of total financial assets increases. This suggests that the investment style of investors is closely related to their diversification behavior.

• International Journal of Advanced Culture Technology
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• 제10권3호
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• pp.202-209
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• 2022

This study investigates the association between corporate international diversification and audit fees and audit hours. Korean firms' overseas investment has rapidly increased in recent years and the trend of international diversification is expected to accelerate in the future. Thus, it is important to investigate how auditors respond to globally diversified firms. Our empirical findings show that internationally diversified firms incur higher audit fees and audit hours. This suggests that auditors perceive global diversification as being a higher business risk and require higher external audit fees so that they can decrease audit risk arising from inherent organizational complexity. Further, auditors expand audit procedures to collect more audit evidences, exerting increased audit effort. This study provides empirical evidences that corporate global diversification results in higher audit fees and audit hours. Auditors may refer to these results when planning their audit and determining audit fees and audit hours.

• The Journal of Asian Finance, Economics and Business
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• 제7권9호
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• pp.1-10
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• 2020

The purpose of this study is to investigate the relationship between diversification and the performance of commercial banks, while taking into account the ownership status of these banks in Sri Lanka. Two-way relationship between diversification and performance was scrutinised by employing the 2SLS regression technique. The data consists of 17 registered commercial bank in Sri Lanka between 2001-2016. The results show a strong significant bidirectional relationship exists between diversification and bank performance. The performance of Sri Lankan banks has been significantly improved by their diversification attempts. In other words, the banks whose incomes are more diversified from various sources, they are more profitable and successful in long-term. On the other hands, the results also reveal that bank performance positively and significantly affects diversification. This finding suggests that the banks with great profitability are more capable in diversify their operations. Furthermore, private sector banks, both listed and unlisted, are significantly more diversified than their government-owned counterparts, but their performance is not necessarily superior to government-owned banks. This may be the result of the economic environment and the perception of the public, which have allowed the government-owned banks to entertain significant market power over the private sector banks in the country.

• 벤처창업연구
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• 제8권2호
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• pp.21-33
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• 2013

본 연구는 IPO 이후 벤처기업의 효과적인 다각화 전략을 규명하기 위해 코스닥 등록 벤처기업을 대상으로 다각화가 기업성과 및 기업가치에 어떠한 영향을 미치는지를 분석하였다. 특히 본 분석에서는 벤처기업의 다각화 수준에 대한 대용변수로 베리-허핀달지수를 사용하였으며, 다각화 방법을 M&A, 전략적 제휴, 자회사 설립으로 구분하여 이들 간의 상호작용 효과가 미치는 영향도 함께 분석하였다. 분석결과를 요약하면 다음과 같다. 첫째, 다각화는 성장성에는 통계적으로 유의한 영향을 미치지 않았으나 다각화와 기업의 수익성 간에는 역 U자형 관계가 있는 것으로 나타났다. 둘째, 다각화와 시장가치를 기반으로 측정된 기업가치 사이에는 통계적으로 유의하지는 않았지만 U자형 또는 정(+)의 관계가 있는 것으로 나타났다. 셋째, M&A는 다각화와 기업성과 및 기업가치의 관계를 조절하는 것으로 나타났다. 넷째, 전략적 제휴와 자회사 설립은 다각화와 기업의 수익성과의 관계를 조절하는 것으로 나타났다. 이상의 분석결과를 토대로 코스닥 등록 이후 벤처기업의 다각화에 대한 실무적인 시사점을 도출하였다.

• International Commerce and Information Review
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• 제1권1호
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• pp.3-24
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• 2008

This paper examines the corporate parent effect on the diversification strategies of triad and Asian subsidiaries in the ASEAN region. I find that triad subsidiaries tend to participate in high technology intensive industries, and are more likely to diversify. In addition, I also find that the subsidiary diversification strategy is significantly affected by the number of affiliations under the same corporate parent that perform the same or different activities in the region. These results shed light on the influence of corporate parent on subsidiary-level strategy and the role of the subsidiary within an economically integrated region. Various implications are discussed.