Failure rate of the minimum and maximum of a multivariate normal distribution

It is well known that if the parent distribution has a nonnegative support and has increasing failure rate (IFR), then all the order statistics have IFR. The result is not necessarily true in the case of bivariate distributions with dependent structures. In this paper we consider a multivariate normal distribution and prove that, the distributions of the minimum and maximum retain the IFR property. Received: September 1999     

帮助贫困人口

在贫困国家，用于教育与卫生保健的支出能促进人力资本的发展，并帮助它们实现千年发展目标，不过政府必须敢于承担责任。     

Foreign capital and technology transfer in a dynamic model

We consider a dynamic three-sector dual-economy model when the technology transfer takes place from the foreign enclave to the labor-intensive domestic enclave. The long-run equilibrium and the comparative steady-state effects are analyzed. It is shown that the policy of subsidization to the foreign enclave may satisfy the conflicting tasks of raising national income and lowering unemployment simulataneously in the long run. Subsidization to a domestic enclave does not satisfy both the objectives.     

Managing the process of market orientation by publicly funded laboratories: the case of CSIR, India

User-interaction is the most important ingredient in achieving market orientation. In this paper, perceptions of senior scientists and directors in publicly funded R&D labs in India with primary mission to conduct applied research, were analysed to learn about their interaction with industry. The areas examined included: importance and frequency of labs' interaction with industry; barriers faced by labs in their efforts to interact with industry; and initiatives taken by labs to improve their interaction with industry. Recommendations are presented to improve lab-industry interaction by analysing actions of labs that are more successful in transferring their technologies to industry as compared to their less successful counterparts.     

Estimation of the precision matrix of multivariate Pearson type II model

In this paper, the problem of estimating the precision matrix of a multivariate Pearson type II-model is considered. A new class of estimators is proposed. Moreover, the risk functions of the usual and the proposed estimators are explicitly derived. It is shown that the proposed estimator dominates the MLE and the unbiased estimator, under the quadratic loss function. A simulation study is carried out and confirms these results. Improved estimator of tr (Σ ⁻¹) is also obtained.     

Gender Characterizations in Entrepreneurship: A Multi‐Level Investigation of Sex‐Role Stereotypes about High‐Growth,Commercial, and Social Entrepreneurs

The purpose of this study is to cast new light on possible gender biases in implicit theories people hold about various forms of entrepreneurial activity. Using social role theory, we delve into sex‐role stereotypes associated with high‐ and low‐growth entrepreneurship and commercial and social entrepreneurship. Predictions were tested with an experimental design using both a between‐subject design to capture group‐level stereotypes and a within‐subject design to capture individual‐level stereotypes. Findings reveal that commercial and high‐growth entrepreneurs are perceived as more similar to men than to women and higher on agency than communality. Conversely, low‐growth entrepreneurs are perceived as more similar to women than men, and higher on communality than agency. Social entrepreneurs are uniquely perceived as similar to both men and women, though they are also considered higher on agency than communality. Interestingly, female, but not male respondents, perceive some overlap between the feminine gender role and high‐growth and commercial entrepreneurship. Notably, those higher on modern sexism perceive less overlap between entrepreneurship and femininity. Taken together, our results suggest that commercial high‐growth entrepreneurship is most strongly male‐typed, which is likely to be problematic for women (and non‐traditional men) wanting to start growth‐oriented ventures. Implications and directions for future research are discussed.     

How Task-Facilitative Interactive Tools Foster Buyers’ Trust in Online Retailers: A Process View of Trust Development in the Electronic Marketplace

While there is a sustained interest in research focusing on issues relating to trust development in the electronic marketplace, significant gaps remain in the literature. In particular, little is known of the underlying processes that may be occurring in online trust development. For example, research suggests that factors such as site design and navigability are among the factors that impact trust perceptions. Extant literature, however, is largely silent about why certain trust-related effects are observed in online environments. In this paper, we propose a new process-centric perspective for understanding the formation of online trust—through buyer's assessment of the e-retailer's assistive intent, implicitly embedded in task-facilitative interactive tools. Specifically, we develop and test a model delineating the relationship between seller's provision of interactive product information management and product information comprehension tools, buyer's perceptions of seller's assistive intent, and buyer's initial trust in the seller. The results of two studies provide support for the trust-enhancing effects of task-facilitative informational tools and the mediating role of buyer's perceptions of seller's assistive intent. Importantly, these effects occur without any explicit expressions of seller's intentions. The results also suggest that the efficacy of interactive informational tools in engendering perceptions of seller's assistive intent, and hence trust, varies with the buyer's level of involvement with and knowledge of the product category.     

External validation of the use of vignettes in cross-country health studies

Cross-country comparisons of subjective assessments are rendered difficult if not impossible because of sub-population specific response style. To correct for this, the use of vignettes has become increasingly popular, notably within cross-country health studies. However, the validity of vignettes as a means to re-scale across sample sub-populations critically rests on the assumption of “response consistency” (RC): that vignettes and self-assessments are evaluated on the same scale. In this paper, we seek to test this assumption by applying objective measures of health along with subjective measures and vignettes. Our results indicate that the assumption of RC is not innocuous and that our extended model relaxing this assumption improves the fit and significantly changes the cross-country rankings of health vis-á-vis the standard Chopit model.     

The behavioral responses to perceived scarcity – the case of fast fashion

The literature on scarcity has generally examined consumers’ attitudes towards scarce products and suggested that scarcity messages have a positive effect on the evaluation of and attitude toward the scarce object. However, literature has largely failed to explain consumers’ feelings or reactions to human-controlled scarce environments. This study examines how deliberate product scarcity influences the consumers’ behavioral responses, and provides an understanding of consumers’ reactions to conditions of scarcity that are strategically created by marketers. The context of this study is fast fashion retailers, as they are known to create extreme human-induced scarcity. We conducted 21 face-to-face interviews with fast fashion store managers, consumers, and an industry expert. Further, observational research was also conducted to observe the consumer buying behavior across 10 different fast fashion stores. The objectives were to (1) help the interviewees think about the various strategies adopted to induce scarcity within the stores (from retailer’s perspective), (2) understanding of scarcity in these stores (from consumer’s perspective), and (3) consumers’ responses to such deliberate manipulations. All the interviewees agreed that fast fashion stores were successful in creating perceived scarcity which reflected both limited merchandise supply as well as deliberate manipulation of merchandise availability by the retailer. The findings also suggest that consumers in these perceived scarcity conditions exhibit buying behavior like urgency to buy, which further leads to deviant and competitive behaviors like in-store hoarding and in-store hiding. Though perceived scarcity, urgency to buy, and in-store hoarding was consistent across the interviews with store managers and consumers, surprisingly, the phenomenon of in-store hiding behavior did not emerge from any of the interviews conducted with store managers, but was a consistent theme across most consumer interviews.