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41.
In Joon Kim In-Seok Baek Jaesun Noh Sol Kim 《Review of Quantitative Finance and Accounting》2007,29(1):69-110
This paper investigates the role of stochastic volatility and return jumps in reproducing the volatility dynamics and the
shape characteristics of the Korean Composite Stock Price Index (KOSPI) 200 returns distribution. Using efficient method of
moments and reprojection analysis, we find that stochastic volatility models, both with and without return jumps, capture
return dynamics surprisingly well. The stochastic volatility model without return jumps, however, cannot fully reproduce the
conditional kurtosis implied by the data. Return jumps successfully complement this gap. We also find that return jumps are
essential in capturing the volatility smirk effects observed in short-term options.
相似文献
Sol KimEmail: |
42.
This paper reviews the evidence on the relationship between work and health. It concludes that, overall, the beneficial effects of work outweigh the risks of work, and are greater than the harmful effects of long-term worklessness. That contrasts with increasing trends of sickness absence, long-term incapacity and ill-health retirement attributed to common health problems. It suggests that there needs to be a fundamental shift in how we think about common health problems and work--in health care, the workplace and society. 相似文献
43.
EFFECTS OF INFLATION ON CAPITAL STRUCTURE 总被引:1,自引:0,他引:1
The purpose of this study is to examine the aggregate capital structure based on several factors that affect the demand for and supply of corporate debt. The main hypotheses are that under inflation the larger the amount of depreciation and the larger the yield differences between corporate and municipal bonds and between corporate bonds and equities, the larger the amount of corporate debt. The empirical tests performed in this study support these hypotheses. 相似文献
44.
Christine X. Jiang Jang-Chul Kim Dan Zhou 《International Review of Financial Analysis》2011,20(5):335-344
In this paper, we investigate the empirical relationship between institutional ownership, number of analysts following and stock market liquidity. We find that firms with larger number of financial analysts following have wider spreads, lower market quality index, and larger price impact of trades. However, we find that firms with higher institutional ownership have narrower spreads, higher market quality index, and smaller price impact of trades. In addition, we show that changes in our liquidity measures are significantly related to changes in institutional ownership over time. These results suggest that firms may alleviate information asymmetry and improve stock market liquidity by increasing institutional ownership. Our results are remarkably robust to different measures of liquidity and measures of information asymmetry. 相似文献
45.
Journal of Business Ethics - The current paper examines whether knowledge of an ethical principle influences moral awareness and ethical decision making. Using hypothetical scenarios (Studies 1 and... 相似文献
46.
The Business Case for Gender Diversity: Examining the Role of Human Resource Management Investments 下载免费PDF全文
Integrating opposing theoretical perspectives from the past literature, the authors hypothesize and test a U‐shaped curvilinear relationship between gender diversity and workforce productivity. They further propose that the curvilinear effects vary depending on the levels of an organization's human resource management (HRM) investments in pay, benefit, training, and communication; that is, the patterns are more salient when HRM investments are high rather than low. To enhance understanding of how HRM investments have impact on diverse employees, the authors also examine the moderating influence of organizational identification of diverse members that can exert proximal influence on the diversity‐productivity relationship. As predicted, results reveal that high levels of HRM investments influence the gender diversity–workforce productivity association to form a U‐shaped curvilinear relationship. Organizational identification also yields the same moderating patterns. Research and practical implications are discussed. © 2015 Wiley Periodicals, Inc. 相似文献
47.
Ning Wu Kim Hoque Nicolas Bacon Juan Carlos Bou Llusar 《Human Resource Management Journal》2015,25(4):408-423
This article draws on the Organisational Growth and Development (OGD) life cycle model to explore the relationship between high‐performance work systems (HPWS) and performance in firms of different size, thereby extending understanding of congruence or ‘best fit’ theory within strategic HRM debates. With reference to management control theory, economies of scale and the availability of specialist managerial skills, the article hypothesises that while an HPWS–performance relationship might exist in small, medium‐sized and large firms, the relationship will be stronger in large firms than in both small and medium‐sized firms, and stronger in medium‐sized firms than in small firms. Analysis of data from the British Workplace Employment Relations Survey demonstrates, however, that there is no association between HPWS and workplace performance in medium‐sized firms, in contrast to the positive relationship between HPWS and performance found in large firms and between HPWS and labour productivity in small firms. 相似文献
48.
Quality & Quantity - Non-profit organizations (NPOs) have been recognized as critical performers not only in the enhancement of social values and civic integration but also in the construction... 相似文献
49.
Joseph A. Clougherty Jin Uk Kim Bradley R. Skousen Florian Szücs 《Journal of Management Studies》2017,54(3):340-365
The foundational international business (IB) scholarship grappled with whether multinational enterprises (MNEs) are largely efficiency‐enhancing or market‐power inducing institutions. Contemporary scholarship, however, often associates foreign direct investment (FDI) with efficiency‐enhancing properties and thus neglects the market‐power interpretation of the MNE. Such an imbalance is problematic given that the theoretical and empirical justifications behind the field's embrace of the efficiency interpretation are not fully evident. Instead, both efficiency and market‐power effects are seemingly present in cross‐border investment activity. Based on a comprehensive sample of up to 4,361 cross‐border investments materializing between 1986 and 2010, we present theoretically‐grounded hypotheses with regard to when market‐power effects will tend to dominate efficiency effects. We find that cross‐border investments undertaken by emerging‐market MNEs in both developed and emerging markets tend to involve substantial efficiency effects and minimal market‐power effects when compared with the cross‐border investments undertaken by developed‐country MNEs in both developed and emerging markets. 相似文献
50.
Despite a significant amount of attention, the potential of supplier structural embeddedness (i.e., the value of the structural position in an extended network) to improve the performance of a buying firm remains poorly understood. This study drew on the social network theory to empirically examine a conceptual framework specifying a relationship between the efforts of a buying firm to understand supplier structural configuration and operational and financial performance. This study also examines how the comprehension of structural embeddedness is transformed into performance for a buying firm through relational embeddedness (i.e., the strength of a dyadic relationship). Survey data collected from companies in the U.S. were analyzed using hierarchical regression analysis. The results indicate that the understanding of the structural dimension does help to enhance operational performance of a buying firm, but it does not lead to better financial performance. Empirical evidence shows that a buying firm does improve the quality of a dyadic relationship between the buying firm and a supplier by understanding how the supplier is connected to other firms and what positional values are produced. Further, relational embeddedness is found to mediate the influence of the enhanced understanding of the structural configuration on operational performance. 相似文献