The profitability of momentum trading strategies: Empirical evidence from Hong Kong

This paper investigates whether momentum trading strategies are profitable in the Hong Kong stock market, and examines the sources of such profitability. Momentum portfolios are significantly profitable in the intermediate term in Hong Kong, but the profits become insignificant after risk adjustment by the Chordia and Shivakumar (2001) model. The stock-specific return strategy and factor-related return strategy are analyzed to examine which portion of the total return causes stocks to enter extreme portfolios. The Chordia and Shivakumar factor-related return strategy obtains profits with a magnitude that is close to that which is attained by the total return momentum strategy. Additional evidence further supports the view that the Chordia and Shivakumar model captures momentum profits.     

The Effect of Moral Philosophy and Ethnocentrism on Quality-of-Life Orientation in International Marketing: A Cross-Culturaal Comparison

This paper examines the effects of moral philosophy and ethnocentrism on quality of life orientation in international marketing. It also provides a cross-cultural comparison of ethical values between Koreans and Americans. International quality-of-life (IQOL) orientation refers to marketers' disposition to make decisions to enhance the well-being of consumers in foreign markets while preserving the well-being of other stakeholders. It is hypothesized that marketers' moral philosophy and ethnocentrism influence the development of marketers' IQOL. Specifically, the higher the IQOL orientation of international managers, the higher their moral idealism, the higher their moral relativism, and the lower their ethnocentrism. Also, it is hypothesized that American managers are likely to score higher on moral relativism but lower on moral idealism compared to their Korean counterparts. Also, Korean managers are expected to be more ethnocentric than American managers. Data were collected from business professionals who enrolled in professional MBA courses both from the U.S. and Korea. The results provided support for the hypothesized relationships. Managerial implications of these relationships are discussed.     

Bounds for Ratios of Posterior Expectations: Applications in the Collective Risk Model

This paper considers the collective risk model for the insurance claims process. We will adopt a Bayesian point of view, where uncertainty concerning the specification of the prior distribution is a common question. The robust Bayesian approach uses a class of prior distributions which model uncertainty about the prior, instead of a single distribution. Relatively little research has dealt with robustness with respect to ratios of posterior expectations as occurs with the Esscher and Variance premium principles. Appropriate techniques are developed in this paper to solve this problem using the k -contamination class in the collective risk model.     

Hydraulic investigation of the construction-service spillway at the Sangtudinskaya HPP-1

A reliable means, which protects the spillway structure from possible damages, is found for passage of high water at the site of a hydroproject. Translated from Gidrotekhnicheskoe Stroitel’stvo, No. 1, January 2009, pp. 5–10.     

The effect of physician advice on alcohol consumption: count regression with an endogenous treatment effect

Although there are encouraging trends, alcohol abuse continues to be a significant public health problem. Econometric studies of alcohol demand have yielded a great deal of information for alcohol abuse prevention policy. These studies suggest that higher alcohol taxes and stricter drunk‐driving policies can reduce heavy drinking and drunk driving. In this paper we explore the role physician advice plays in the campaign to prevent alcohol‐related problems. Compared to alcohol taxation, physician advice is a more precisely targeted intervention that does not impose extra costs on responsible drinkers. Compared to the resource costs of arresting, processing, and punishing drunk drivers, physician advice may be a lower‐cost intervention. To provide a basis for alcohol policy analysis, we use an alcohol demand framework to test whether physician‐provided information about the adverse consequences of alcohol abuse shifts demand to more moderate levels. There are three aspects of our alcohol demand model that complicate the estimation: (1) the dependent variable is non‐negative (it is a count variable—number of drinks consumed); (2) a non‐trivial number of sample observations have zero values for the dependent variable; and (3) because the data we use is non‐experimental, the treatment variable indicating receipt of advice from a physician may be endogenous. We implement an estimation method that is specifically designed to deal with these three complicating factors. Our results show that advice has a substantial and significant impact on alcohol consumption by males with hypertension, and that failing to account for the endogeneity of advice masks this result. Copyright © 2001 John Wiley & Sons, Ltd.