Unbiased estimation of the MSE matrices of improved estimators in linear regression

Stein-rule and other improved estimators have scarcely been used in empirical work. One major reason is that it is not easy to obtain precision measures for these estimators. In this paper, we derive unbiased estimators for both the mean squared error (MSE) and the scaled MSE matrices of a class of Stein-type estimators. Our derivation provides the basis for measuring the estimators' precision and constructing confidence bands. Comparisons are made between these MSE estimators and the least squares covariance estimator. For illustration, the methodology is applied to data on energy consumption.     

Robotic Pets in Human Lives: Implications for the Human–Animal Bond and for Human Relationships with Personified Technologies

Robotic "pets" are being marketed as social companions and are used in the emerging field of robot-assisted activities, including robot-assisted therapy (RAA). However, the limits to and potential of robotic analogues of living animals as social and therapeutic partners remain unclear. Do children and adults view robotic pets as "animal-like,""machine-like," or some combination of both? How do social behaviors differ toward a robotic versus living dog? To address these issues, we synthesized data from three studies of the robotic dog AIBO: (1) a content analysis of 6,438 Internet postings by 182 adult AIBO owners; (2) observations and interviews with 80 preschoolers during play periods with AIBO and with a stuffed dog; and (3) observations and interviews with 72 children, aged 7–15 years, who played with AIBO and a living dog. Overall, the studies revealed that "hybrid" cognitions and behaviors about AIBO emerged: the robotic dog was treated as a technological artifact that also embodied attributes of living animals, such as having mental states, being a social other, and having moral standing (although this latter finding remained difficult to interpret). Implications for use of robotic pets as companions and in interventions or therapy are explored.     

The English as they see others: England revealed in Provence

Peter Mayle's best-selling accounts of his life in Provence have appealed to a wide audience in Britain but have also attracted harsh criticism. It is argued here that these works, although ostensibly about Provence, are better analysed as myths for the English. The contrast with an account from the 1930s reflects wider social change, showing a move from a confidently colonial to a self-consciously ‘anthropological’ mode. Doubts about the authenticity of Mayle's accounts are related both to his use of free indirect discourse and other literary devices in order to convey ethnographic colour, and to ideological tensions in post-colonial Britain.     

Cause-related marketing,philanthropy, and the arts

Joint fundraising and promotional programs between businesses and nonprofits, often referred to as cause-related marketing, have been on the rise. During the 1980s, many large corporations initiated cause-related marketing programs. Less is known, however, about how widespread cause-related marketing has become among medium-size companies. In the study of 478 medium-size businesses reported here, one-fifth made contributions to nonprofits as part of cause-related marketing programs, and more were becoming interested, but many of the businesses were dissatisfied with the effect of their contributions to nonprofits. Satisfied business participants actively recommended nonprofits to other business owners and intended to increase their own contributions. The authors provide additional insights on business donor motivation through their application of the Seven Faces framework.     

On nonparametric Bayesian inference for the distribution of a random sample

The nonparametric Bayesian approach for inference regarding the unknown distribution of a random sample customarily assumes that this distribution is random and arises through Dirichlet-process mixing. Previous work within this setting has focused on the mean of the posterior distribution of this random distribution, which is the predictive distribution of a future observation given the sample. Our interest here is in learning about other features of this posterior distribution as well as about posteriors associated with functionals of the distribution of the data. We indicate how to do this in the case of linear functionals. An illustration, with a sample from a Gamma distribution, utilizes Dirichlet-process mixtures of normals to recover this distribution and its features.     

THE PRESENTATION OF ETHNIC AUTHENTICITY:

Ethnic entrepreneurs in American society often carve out an economic niche by means of business enterprises and cultural events that are open to the general public and showcase ethnic culture. These locations depend upon a display of the ethnic culture that is simultneously seen as "authentic" and within the bounds of cultural expectations ("Americaized"). In a society that values toleration and cross-cultural contacts, many consumers desire a unique, yet comfortable experience, given their own cultural preferences. We focus on the presentation of ethnic food in four Chinese restarants in a small southern city. Ethnic tradition continues but in the context of a continuous process of adaptation. Authenticity is not an objective criterion but is socially constructed and linked to expectations. We contrast two broad classes of Chinese restarants—consumption-oriented and connoisseur-oriented—to describe strategies by which restaurateurs fit Chinese food into market niches. We conclude by suggesting some directions for the study of public ethnic culture.