The effect of charitable giving by celebrities on the personal public relations

This study examined how charitable giving by entertainment celebrities influences celebrity personal public relations. Survey participants showed positive attitudes toward charitable giving. Attitudes toward charitable giving positively influenced celebrity credibility perception. Credibility also influenced attitudes toward the celebrities, which in turn positively influenced the purchase intention of their performance. Also, attitudes toward charitable donations were positively associated with attitudes toward the celebrities. Scholars and practitioners need to note charitable giving as an efficient and strategic personal public relations factor and method.     

Impacts of Home Modifications on Aging-in-Place

The purpose of this study is to analyze the relationship between home modifications and aging-in-place. Using the ENABLE-AGE United Kingdom sample (N = 376), the authors hypothesize that seniors who have modified their housing are likely to have stayed longer in their current housing. There is a positive relationship between home modifications and aging-in-place. The results underscore the importance of supportive environment to prolong living in housing settings.     

Resource Constraints or Cultural Conformity? Nonprofit Relationships with Businesses

Nonprofit interactions with businesses have become increasingly diverse, but which nonprofits establish relationships, and to what extent do relationships depend on the form or type of tie? Focusing on nonprofit collaboration with businesses and donations from businesses, we test arguments based on sociological institutionalism and resource dependence theory. We find that nonprofits relying on earned income, nonprofits led by individuals with management degrees, and rationalized nonprofits all are more likely to report collaborations with businesses, aligning with expectations from institutional theory. For donative ties between businesses and nonprofits, we find that rationalized nonprofits are more likely to have charitable gifts from businesses. However, nonprofits with earned income are less likely to have business donations, and funding diversity has a salient positive effect. These results reveal important but paradoxical institutional and resource dependence effects. We conclude with a discussion of our divergent findings and set an agenda for additional research on the topic.     

Empirical Bayes confidence intervals shrinking both means and variances

Summary.  We construct empirical Bayes intervals for a large number p of means. The existing intervals in the literature assume that variances     are either equal or unequal but known. When the variances are unequal and unknown, the suggestion is typically to replace them by unbiased estimators     . However, when p is large, there would be advantage in 'borrowing strength' from each other. We derive double-shrinkage intervals for means on the basis of our empirical Bayes estimators that shrink both the means and the variances. Analytical and simulation studies and application to a real data set show that, compared with the t -intervals, our intervals have higher coverage probabilities while yielding shorter lengths on average. The double-shrinkage intervals are on average shorter than the intervals from shrinking the means alone and are always no longer than the intervals from shrinking the variances alone. Also, the intervals are explicitly defined and can be computed immediately.     

Using the dependent wild bootstrap for the nonparametric goodness-of-fit test for density functions

In this paper, we consider the well-known nonparametric consistent model-specification test for the stationary density function (see [Aït-Sahalia Y. Testing continuous-time models of the spot interest rate. Rev Financ Stud. 1996;9:385–426; Li Q. Nonparametric testing of closeness between two unknown distribution functions. Econ Rev. 1996;15:261–274; Fan Y, Ullah A. On goodness-of-fit tests for weakly dependent processes using kernel method. J Nonparametric Stat. 2000;11:337–360]) and reinvestigate it carefully using asymptotics and simulation. Our work reveals that the test is subject to power and size distortions, which are mainly caused by dependence or convergence rate changes under the null and alternative hypothesis. A dependent wild bootstrap is newly suggested as a feasible remedy to such distortions. Our result provides a complete explanation as well as a solution to the problem that experienced by Aït-Sahalia [Testing continuous-time models of the spot interest rate. Rev Financ Stud. 1996;9:385–426], that is, that the test rejects true models too often when independent and identically distributed asymptotic critical values are used.     

An unexpected meeting of four seemingly unrelated problems: graph testing, DNA complex screening, superimposed codes and secure key distribution

This paper discusses the relation among four problems: graph testing, DNA complex screening, superimposed codes and secure key distribution. We prove a surprising equivalence relation among these four problems, and use this equivalence to improve current results on graph testing. In the rest of this paper, we give a lower bound for the minimum number of tests on DNA complex screening model. The first and second author would like to dedicate this paper to professor Frank K. Hwang on the occasion of his 65th birthday. This research is partially supported by Republic of China, National Science Council grant NSC 92-2115-M-009-014.     

A new functional statistic for multivariate normality

The test statistics of assessing multivariate normality based on Roy’s union-intersection principle (Roy, Some Aspects of Multivariate Analysis, Wiley, New York, 1953) are generalizations of univariate normality, and are formed as the optimal value of a nonlinear multivariate function. Due to the difficulty of solving multivariate optimization problems, researchers have proposed various approximations. However, this paper shows that the (nearly) global solution contrarily results in unsatisfactory power performance in Monte Carlo simulations. Thus, instead of searching for a true optimal solution, this study proposes a functional statistic constructed by the q% quantile of the objective function values. A comparative Monte Carlo analysis shows that the proposed method is superior to two highly recommended tests when detecting widely-selected alternatives that characterize the various properties of multivariate normality.     

Great walls over African rivers: Chinese engagement in African hydropower projects

Recent acceleration of Chinese engagement in African hydropower is attracting increasing attention and concern. Yet there is scant research and little reliable data on this engagement. This article analyses Chinese hydropower engagement based on a new, verified dataset. We examined over 100 projects reported by the media and lists compiled by other organizations, amassing case studies for each project using desk research, interviews and field visits. We demonstrate that Chinese engagement in African hydropower is often overestimated in both numbers and value. Further, misunderstanding and myths abound regarding Chinese financing and construction practices. This evidence‐based understanding provides a firmer foundation for advocacy, research and efforts by other companies and funding agencies to co‐operate with Chinese actors in this controversial sector.     

The strategic use of Twitter to manage personal public relations

This study examined the effect of personal public relations developed through Twitter on cognitive and attitudinal aspects, particularly focusing on the use of Twitter by CEOs. According to the responses of young consumers who participated in this study, their attitudes toward the use of Twitter by CEOs positively influenced their perception of transformational leadership (H1). Further, perceived transformational leadership was positively associated with attitudes toward CEOs using Twitter; this in turn positively influenced attitudes toward corporations (H2). The positive evaluation of the use of Twitter by CEOs directly influenced attitudes toward such CEOs (H3), whereas attitudes toward such use did not influence attitudes toward corporations. The results indicated that microblogging is beneficial for the development of effective personal public relations by corporate leaders.