ROBUST ASSET ALLOCATION WITH BENCHMARKED OBJECTIVES

In this paper, we introduce a new approach for finding robust portfolios when there is model uncertainty. It differs from the usual worst‐case approach in that a (dynamic) portfolio is evaluated not only by its performance when there is an adversarial opponent (“nature”), but also by its performance relative to a stochastic benchmark. The benchmark corresponds to the wealth of a fictitious benchmark investor who invests optimally given knowledge of the model chosen by nature, so in this regard, our objective has the flavor of min–max regret. This relative performance approach has several important properties: (i) optimal portfolios seek to perform well over the entire range of models and not just the worst case, and hence are less pessimistic than those obtained from the usual worst‐case approach; (ii) the dynamic problem reduces to a convex static optimization problem under reasonable choices of the benchmark portfolio for important classes of models including ambiguous jump‐diffusions; and (iii) this static problem is dual to a Bayesian version of a single period asset allocation problem where the prior on the unknown parameters (for the dual problem) correspond to the Lagrange multipliers in this duality relationship. This dual static problem can be interpreted as a less pessimistic alternative to the single period worst‐case Markowitz problem. More generally, this duality suggests that learning and robustness are closely related when benchmarked objectives are used.     

Materialism,fashion consumers and gender: a cross‐cultural study

The purpose of this study was to examine the relationships among materialism, gender and fashion consumer groups from two countries – one representative of an individualistic culture (US) and one representative of a collectivistic culture (Korea). Participants were 397 students from a university in Korea (n = 221) and a university in the US (n = 176) who completed the questionnaire. The materialism construct showed adequate reliability for participants in both cultures. Fashion change agents scored higher on materialism (centrality and success) than fashion followers. Females scored higher on materialism than males which seemed to be based on higher scores on the centrality subscale. Participants from the US and Korea differed on all three subscales of materialism with US participants scoring higher on centrality but lower on success and happiness than Korean participants. The findings of this study provide valuable implications for fashion marketers and retailers in Korea and US. The findings are limited to Korean and US consumers and cannot be generalized to other cultures. This paper fills a gap in the literature by comparing materialistic values between genders and fashion consumer groups in an individualistic culture (US) and a collectivistic culture (Korea).     

Supply Chain Management Competency and Firm Financial Success

Supply chain management (SCM) plays a major role in creating (or destroying) shareholder value by influencing the three major drivers of firm financial performance: revenue, operating costs, and working capital. Yet, the relationship between SCM competency and firm financial performance is not well‐established. Drawing on the resource‐based view of the firm, this study assesses this relationship using Delphi‐style opinion data from AMR Research’s Supply Chain Top 25 rankings to assess SCM competency and Altman’s (1968) Z‐score statistic as the measure of financial success. The study findings show that firms recognized by industry experts for SCM competency have significantly higher Z‐scores than their close competitors and industry averages.     

“我们正在寻找中国进口商”

亚洲是我国开展对外经贸合作最主要的对象之一,特别是东盟一巾吲自由贸易区2010年1月1日全面启动以来,中国与亚洲国家经贸合作正变得更广泛而深入。近日,本刊记者集中采访了新加坡、马尔代夫和马来阳砸驻华大使,请他们介绍中国企业在这些国家的发展机会。     

The emergence, advance and future of international entrepreneurship research — An introduction to the special forum

Since its genesis over twenty years ago, research in International Entrepreneurship has emerged as a field of study, and moved through the process of differentiation, mobilization and legitimacy building. Generally referred to as IE, research in this area is conducted by scholars worldwide and supported by various community structures, conferences and journals. In recognition of IE, this Special Forum was initiated to help clarify its parameters and history of development, the areas of research pertinent to it and critically, directions for future research.     

Comparing theories to explain e-commerce adoption

E-commerce is a strategy for rapid growth, especially by small and medium sized businesses (SMEs). However, the adoption rate of e-commerce by SMEs in Latin America is still undersized. The authors compare the theory of planned behavior (TPB) and the theory of reasoned action (TRA) using structural equation modeling to determine which is better at predicting e-commerce adoption intentions among 210 SME managers/owners in Chile. Contrary to previous research with American respondents, the study does not find significant differences between the two theories. Thus, academics should select the more parsimonious model (TRA) to study e-commerce adoption issues in developing countries.     

Reflections on discriminant validity: Reexamining the Bove et al. (2009) findings

Bove, Pervan, Beatty and Shiu (2009) develop and test a latent variable model of the role of service workers in encouraging helpful behaviors by customers towards the service business (OCBs). Farrell (2010) questions these findings due to an incorrect application of the Fornell and Larcker (1981) discriminant validity test. The authors respond to Farrell's criticism by discussing the options available for assessing discriminant validity, the current use of these options in top journals, the underlying assumptions of these assessments, and the appropriateness of the alternative assessments under different types of situations. Finally, the authors address the specific concerns raised in Farrell (2010) in regard to Bove et al. (2009).     

Measurement of organizational investments in social capital: The service employee perspective

This paper describes the development and validation of a measure of organizational investments in social capital (OISC). The scale development process is carried out over three stages (item generation, scale purification, scale validation), with two separate data collection phases involving a total of 735 working adults from multiple and diverse service-related workplace settings. As such, the data provide evidence for the face, content, discriminant, convergent and nomological validity, dimensionality and reliability of the OISC measure. The OISC measure is a concise, unidimensional scale that has the potential for significant usage in the development and testing of theory, as well as practical application in retail and other service provision contexts.     

A model of adolescents' online consumer self-efficacy (OCSE)

This paper investigates adolescent online shopping and self-efficacy development in the virtual setting. The authors present and test a model of antecedents and mediators to two dimensions of online consumer self-efficacy. Additionally, a discriminant analysis finds that more involved adolescent online shoppers can be differentiated from less involved online shoppers on key variables of interest-shopping motivations, self-efficacies, shopping behaviors, and relative influence in household decision-making.