Hyperbolic normal stochastic volatility model

For option pricing models and heavy-tailed distributions, this study proposes a continuous-time stochastic volatility model based on an arithmetic Brownian motion: a one-parameter extension of the normal stochastic alpha-beta-rho (SABR) model. Using two generalized Bougerol's identities in the literature, the study shows that our model has a closed-form Monte Carlo simulation scheme and that the transition probability for one special case follows Johnson's distribution—a popular heavy-tailed distribution originally proposed without stochastic process. It is argued that the distribution serves as an analytically superior alternative to the normal SABR model because the two distributions are empirically similar.     

Are college education and job experience complements or substitutes? Evidence from hedge fund portfolio performance

Review of Quantitative Finance and Accounting - We examine, for various educational characteristics of hedge fund managers, the performance profile of hedge fund portfolios along their...     

Modernization and dependency revisited: U.S. direct investment,development, and polity in Latin America, 1950–1998*

Since World War II, the modernization model has been the mainstream paradigm for economic development. Modernization assumes that foreign capital is a necessary catalyst for transforming societies from traditional to modem. Challenges to the modernization paradigm culminated in dependency theory. Dependency theorists point to detrimental effects of foreign capital and domination (e.g., income inequality, authoritarianism, and inappropriate consumption). Despite the charge by many scholars that this debate has subsided, basic but important questions remain to be answered. This paper assesses the role of U.S. direct investment (USDI) on the major economies of Latin America over time (1950–1998). Using Vector Autoregression, we look at the long‐term political relationships between USDI, economic development, and the degree of authoritarianism in the host country's government. We treat these variables as endogenous as both dependency and modernization hypothesize relationships among them. We find that there are only weak long‐term relationships between polity, development, and USDI. These results fully support neither the modernization nor the dependency model.     

Export composition and growth of selected low-income African countries: evidence from time-series data

This paper examines the hypothesis that economic growth is linked to export composition with the use of time-series data for some low-income African countries. On the basis of the regression results, the study supports the hypothesis of a positive linkage between the growth of non-fuel primary exports and growth. However, the results cast some doubt on the significance of the positive contribution of the manufactured exports sector to the growth process of the low-income African countries.     

The Foundations of International Business: Cross‐Border Investment Activity and the Balance between Market‐Power and Efficiency Effects

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.     

Small and Medium‐Sized Enterprises' Collaborative Buyer–Supplier Relationships: Boundary Spanning Individual Perspectives

Boundary‐spanning individuals (BSIs) play a critical role in supply chain management, especially in small and medium‐sized enterprises (SMEs) where interactions with buyers and suppliers can depend heavily on just a few individuals. This study, utilizing data from Korean manufacturing‐sector SMEs, explores whether cooperative social value orientations of SMEs' BSIs influence the effects of collaborative buyer‐supplier initiatives. The results suggested that the performance implication of decision‐sharing initiative increases when BSIs have a high level of cooperative social value orientation. However, it also negatively moderates the relationship between risk/benefit sharing (involving financial losses or gains) and performance suggesting possible negative side effects. However, we found that such orientation also negatively moderates the relationship between risk/benefit sharing (involving direct financial losses or gains) and relationship performance suggesting possible negative side effects.     

韩国政府为实现环保型企业经营的政策及方案

文章论述了环境问题对人类的重要性及创造环保型的企业环境需要解决的问题,在此基础上,提 出了为实现环保型企业经营韩国政府所应该采用的政策及具体的实施方案。     

Stochastic convergence of the catch-up rate and multiple structural breaks in Asian countries

Allowing for multiple structural breaks and cross-section dependence, we re-investigate the hypothesis that the catch-up rates stochastically converge for 13 Asian countries from 1960 to 2007. Non-rejection of stationarity provides evidence for stochastic convergence, implying that following shocks to the catch-up rate, it will eventually revert to its long-run level.     

An alternative bivariate zero-inflated negative binomial regression model using a copula

We propose an alternative bivariate zero-inflated negative binomial (BZINB) regression model based on a copula. The empirical result shows that the proposed model performs better than the existing BZINB models in terms of the maximum log-likelihood and the AIC.     

Robust future‐oriented technology portfolios: Black–Litterman approach

We propose a new way of constructing more robust technology portfolios to overcome the weaknesses of previous technology portfolios based either on the judgments of experts or on quantitative data such as patents. Instead of using historical data, the method of nonlinear forecasting enables us to forecast the future number of patent citations and accordingly, to use the forecast as a quantitative proxy for future returns and risks of technologies. Using the Black–Litterman portfolio model, we improve the accuracy of inputs by combining the future views of experts with the future returns and risks of technologies. As a consequence of this, the portfolio becomes strongly future‐oriented. With our approach, corporate managers use both experts and data more effectively to build robust technology portfolios. In particular, our method is of great help for companies launching new businesses because the method avoids heavy dependency on internal experts with little knowledge about emerging technologies. A company entering the molecular amplification instrument market is exemplified herein.