The continuous Berth Allocation Problem: A Greedy Randomized Adaptive Search Solution

In this research, continuous and dynamic Berth Allocation Problem (BAP) is studied to minimize the total weighted flow time. Different from previous studies on continuous BAP, an efficient method is proposed to address the problem to identify the possible locations for next vessel in the Time-space diagram. Then two versions of Greedy Randomized Adaptive Search Procedure (GRASP) are developed to search for near optimal solutions. Both small and large scale numerical experiments are tested to examine the effectiveness of the proposed GRASPs by comparison with CPLEX and stochastic beam search, respectively.     

Motivations for corporate social responsibility reporting by MNC subsidiaries in an emerging country: The case of Bangladesh

While many studies of the motivations behind the corporate social responsibility reporting (CSRR) practices of large corporations have been reported internationally, few have focussed on multinational corporation (MNC) subsidiaries. Most importantly, we still do not know how host country institutional norms, or parent corporation policies, influence MNC subsidiaries embarking upon CSRR. By integrating legitimacy theory (LT) and neo-institutional theory (NIT) explanations, this paper offers a theoretical framework for investigating the CSRR practices of MNC subsidiaries in general, and provides empirical evidence on the nature and motivations of subsidiaries’ CSRR practices in Bangladesh, a developing country. Employing a case study method and using qualitative data, the study finds that CSRR practice in Bangladeshi MNC subsidiaries is limited, consisting mainly of employee information. This observation mirrors the overall CSRR trend in Bangladesh. A desire for internal legitimacy emerges as the primary motivation for CSRR practice in MNC subsidiaries. In particular, the external host country environment of the Bangladeshi subsidiaries seems to be a major limitation in the development of CSRR.     

Who is governing whom? Executives,governance, and the structure of generosity in large U.S. firms

We examine how organizational structure influences strategies over which corporate leaders have significant discretion. Corporate philanthropy is a strategic activity commonly managed through a specific, differentiated organizational structure—the corporate foundation—that formalizes and constrains the influence of individual senior managers and directors on corporate strategy. Our analysis of Fortune 500 firms from 1996 to 2006 shows that characteristics of senior management and directors affect corporate philanthropic contributions. We also find that organizational structure constrains the philanthropic influence of board members, but not of senior managers, a result contrary to what existing theory would predict. We discuss how these findings advance understanding of how organizational structure and corporate leadership interact and how organizations can more effectively realize the strategic value of corporate social responsibility activities.     

Unanticipated money,output, employment and prices in a develoing economy: the korean case

This paper examines the effect of unanticipated money on output, unemployment and prices in Korea. The empirical results tend to reject the policy ineffectiveness proposition (PIP) in most cases. They show that both anticipated and unantipated money affect output and prices, in contract with the PIP. Mixed results are obtained for the effect of monetary variables on unemployment. The statistical results show that the regular OLS two step estimates yield t values which are upward biases by 0–27% as compared with the consistent estimates of the variance-covariance matrix that are obtained in this study. [E 51]     

Real and Financial Integration in East Asia

This paper examines the real and financial integration of East Asian economies, by comparing the degree of real vs financial and global vs regional integration, before vs after the Asian crisis. First, price and quantity measures such as the size of intra‐ and inter‐regional trade, cross‐border financial assets, stock return correlation, and interest rate differentials are investigated. Second, the structural panel vector autoregression (VAR) model is constructed to analyze macroeconomic consequences of real and financial integration such as cross‐country output and consumption relation. The results suggest that (i) the degree of real integration significantly increased after the crisis, both regionally and globally; (iii) quantity and price measures showed an increased financial integration after the crisis, but the consumption relation did not; (iv) the degree of regional financial integration is smaller than that of global financial integration, based on the consumption relation; and (v) financial integration lags real integration, especially for regional integration.     

Bounding endogenous regressor coefficients using moment inequalities and generalized instruments

The main approach to deal with regressor endogeneity is instrumental variable estimator (IVE), where an instrumental variable (IV) m is required to be uncorrelated to the regression model error term u (COR(m,u)=0) and correlated to the endogenous regressor. If COR(m,u)≠0 is likely, then m gets discarded. But even when COR(m,u)≠0, often one has a good idea on the sign of COR(m,u). This article shows how to make use of the sign information on COR(m,u) to obtain an one‐sided bound on the endogenous regressor coefficient, calling m a ‘generalized instrument’ or ‘generalized instrumental variable (GIV)’. If there are two GIV's m₁ and m₂, then a two‐sided bound or an improved one‐sided bound can be obtained. Our approach is simple, needing only IVE; no non‐parametrics, nor any ‘tuning constants’. Specifically, the usual IVE is carried out, and the only necessary modification is that the estimate for the endogenous regressor coefficient is interpreted as a lower/upper bound depending on the prior notion on the sign of COR(m,u) and some estimable moment. A real data application is done to Korean household data with two or more children to illustrate our approach for the issue of child quantity–quality trade‐off.     

Determinants of employee willingness to use feedback for performance improvement: cultural and organizational interpretations

This study was designed to identify determinants of employee willingness to use feedback for performance improvement. The proposed determinants included objectives of appraisal, supervisor's knowledge of subordinate's job, agreed plan for performance improvement, trust in supervisor and perceived fairness and accuracy of performance evaluation. Data were collected in two phases. The first phase consisted of a questionnaire survey among 100 Hong Kong Chinese employees working in public and private sector organizations. Regression analysis of questionnaire data indicated that agreed plan for performance improvement and perceived fairness and accuracy of performance evaluation had significant positive effects on employee willingness to use performance feedback. In the second phase, focus group interviews were held to triangulate survey findings. Interview data suggested that Chinese cultural characteristics of paternalism and personalism influenced the underlying dynamics of the evaluation process. Findings are interpreted in the context of employees cultural and organizational background.     

Correlations between stock returns and bond returns: income and substitution effects

We attempt to better understand the varying correlations between stock and bond returns across countries and over sample periods using international data. The observation is that there are two forces that affect the correlation between stock and bond returns. The force that drives a positive correlation is identified as the income effect. The force that drives a negative correlation is identified as the substitution effect. In combination, the two effects help determine the actual correlation between stock and bond returns. We contribute to the literature by proposing an empirical method, the structural vector autoregression (VAR) identification method, to identify the two—income and substitution—effects and to measure the relative importance of the two effects that determine the actual net relation between the two asset returns. We further provide some evidence that the income and substitution effects are related to, among other things, the size of the financial market, the growth and volatility (risk) of the economy, and the business cycle over time. In addition, the framework of the income and substitution effects helps us better understand the automatic stabilizing effects of the dynamic optimal asset allocation during business cycles.     

Indirect tests of the Haugen-Lakonishok small-firm/January effect hypotheses: window dressing versus performance hedging

Equity mutual fund data from 1976–1993 is used to test hypotheses that distinguish window dressing from performance hedging. No significant difference is found pre/post 1983 in the number of funds choosing non-December fiscal year ends or in the percentage of dollars invested when comparing December/non-December fiscal year ends. Significant differences are found in both January returns for mutual funds with December/non-December fiscal year ends and in one month returns for funds with/without a fiscal year end in the previous month. Therefore, if the small-firm/January effect is portfolio manager related, performance hedging, not window dressing, is the more probable source for the “excess” returns.