A three-level supply chain network design model with risk-pooling and lead times

This paper considers a single-sourcing network design problem for a three-level supply chain consisting of suppliers, distribution centers (DC’s) and retailers, where risk-pooling strategy and DC-to-supplier dependent lead times are considered. The objective is to determine the number and locations of suppliers and DC’s, the assignment of each location-fixed DC to a supplier and that of each retailer to a DC, which minimizes the system-wide location, transportation, and inventory costs. The problem is formulated as a nonlinear integer programming model, for which a two-phase heuristic solution algorithm is derived based on the Lagrangian relaxation approach. Numerical experiments show that the proposed heuristic is effective and also efficient.     

Gender Wage Differentials and Occupational Segregation in Hong Kong, 1981–1996

This paper analyses gender wage differentials and the role of occupational segregation in Hong Kong. It is found that the female–male earnings ratio increased substantially from 0.710 in 1981 to 0.839 in 1996. A decomposition which takes into account occupational differences shows that the gender pay gap is mostly within occupations and most of the intra‐occupation wage gap is unexplained. The gender pay differential due to occupational differences is small; in fact, the overall occupational segregation favours females in Hong Kong.     

An Exploratory Study of the Otaku Adolescent Consumer

High accessibility to Internet technology and popularization of focus media has given rise to various emerging subcultures among the younger generation who constantly seek novelty. The otaku is such an adolescent subculture of avid collectors who have a special lifestyle and who are obsessed with anime products. This study explores this specific adolescent segment's traits and purchasing behavior patterns. A focus‐group interview was conducted with some adolescent otaku to allow them to express their opinions and purchasing behaviors. Then, a questionnaire was developed based on the interview's findings, and data from a survey of 105 respondents were collected. Exploratory factor analysis was applied to extract the otaku's trait factors, while confirmatory factor analysis and structural equation modeling were used for the verification of the scale and structural model, respectively. The results show that the adolescent otaku present an obsessive preference for visual perception. The main factor influencing the otaku's purchasing intentions in terms of animation, comics, and games (ACG) is their strong interest in and participation willingness toward ACG. Strategic marketing directions applied to this adolescent group should emphasize information visualization to entice their buying behavior.     

On the complete monotonicity of the compound geometric convolution with applications in risk theory

We prove that the complete monotonicity is preserved under mixed geometric compounding, and hence show that the ruin probability, the Laplace transform of the ruin time, and the density of the tail of the joint distribution of ruin and the deficit at ruin in the Sparre Andersen model are completely monotone if the claim size distribution has a completely monotone density.     

Wages and skills utilization: effect of broad skills and generic skills on wages in Singapore

Many people go for training to upgrade their skills which is hoped to pave the way for better pay. But what are the kinds of skills that really affect wages? Employers have emphasized the value of generic skills such as interpersonal and communication skills, teamwork and problem solving. Does possession of these skills translate to at least the same or better wages as compared with having broad skills represented by educational qualifications and job‐related training? This paper, arising from the research project on the Skills Utilisation in Singapore, aims to answer which skills can have more influence on wages and which job‐related training in terms of training duration can have more impact on wages. Using ordinal logistic regression, our findings show that educational qualification and initial training time can influence wages as well as utilization of leadership, planning and problem‐solving skills.     

Effects of price uncertainty on consumer purchase budget and price thresholds

This article examines how uncertainty about prices affects: (1) the budget consumers allocate for purchasing a product and (2) consumer price thresholds (i.e., the prices that are considered too high or a good deal). In an experimental setting, the purchase budget as well as the absolute values of both thresholds for uncertain subjects were higher than those for certain subjects. Moreover, a relatively large decline from the budget was needed before a price was considered a good deal, whereas a relatively small increase from the budget was sufficient for a price to be considered too high. Price uncertainty widened the difference between the upper (i.e., too high) price threshold and the budget, making uncertain subjects more tolerant to prices exceeding the budget than certain subjects. However, price uncertainty did not have a significant effect on the difference between the budget and the lower (i.e., good deal) price threshold.We wish to thank the editor and anonymous reviewers for their helpful comments on an earlier draft. We also thank Professors S. P. Raj and Amiya Basu for their comments and suggestions at various stages of the study.     

Following the breadcrumbs: An analysis of online product review characteristics by online shoppers

Consumer-generated product reviews are a driving force behind online purchases; at the same time, unfavorable reviews can discourage interested online shoppers and eventually hurt the brand. The objective of this exploratory study was to analyze a diverse range of characteristics and the valence of online product reviews that would aid in responding to customer dissatisfaction. Product reviews (N = 1982) from Amazon.com were collected and content analyzed. Some of the key findings include the following: (a) price was the most commonly discussed product feature; (b) online shoppers found two-sided reviews to be most informative, contradicting the commonly held assumption that negative reviews were more informative and diagnostic in nature; and (c) ‘no action’ was the most common end action across two-sided and negative reviews, indicating that varying levels of dissatisfaction might not always lead to a negative end action. Implications for marketers are discussed.     

OPTIMAL MULTI‐AGENT PERFORMANCE MEASURES FOR TEAM CONTRACTS

We present a continuous‐time contracting model under moral hazard with many agents. The principal contracts many agents as a team, and they jointly produce correlated outcomes. We show the optimal contract for each agent is linear in outcomes of all other agents as well as his/her own. The structure of the optimal contract strikingly reveals that the optimal aggregate performance measure in general can be orthogonally decomposed into two statistics: one is a sufficient statistic, and the other a nonsufficient statistic. As a consequence, the optimal aggregate performance measure in general is not a sufficient statistic, unless the principal is risk neutral. We further discuss agents' optimal effort choices using a “quadratic‐cost” example, which also strikingly suggests that team contracts sometimes provide lower‐powered effort incentives than individually separate contracts do.     

Price and Inventory Dynamics of Primary Commodities

The paper develops a simple framework for the analysis of price and inventory dynamics of primary commodities under the assumption of rational expectations. The analysis shows that if an unanticipated shock primarily affects the demand conditions for inventories, the effect on prices is only temporary. However, when the flow conditions of production and consumption are altered, the change in price tends to become permanent. These results highlight the crucial importance of identifying the markets which originate fluctuations in prices when setting out policy measures to stabilize these fluctuations. [210]     

Financial Analysts' Forecast Accuracy and Dispersion: High-Tech versus Low-Tech Stocks

This study focuses on systematic differences in security analysts' forecast accuracy and dispersion between high- and low-tech firms. In line with the recent development in theoretical models and empirical findings, it posits that security analysts' unsigned forecast error and forecast dispersion are expected to differ between high-tech and low-tech firms. The results of this study provide evidence of lower unsigned error and dispersion for high-tech firms vis-à-vis low-tech firms. The higher forecast accuracy and forecast convergence for high-tech firms relative to low-tech firms in financial analysts' forecasts of earnings can be attributed to the information effect prevailing over the noise effect. Given the lack of empirical studies that compare analysts' forecast accuracy and dispersion between high-tech and low-tech sectors, the results of this paper provide a fresh basis for assessing how market participants vary in their treatment of New Economy stocks and factors that affect such decisions. In the light of the fact that the 1990s is a period characterized by the start of the Information Revolution through the Internet, the results of this study shed light on the usefulness of examining factors that differentiate between high-tech firms (New Economy stocks) and low-tech firms (Old Economy stocks) in financial analysts' forecasting earnings.