Laurie Nordic Ski Center

The proprietor of a ski lodge with Nordic ski trails faces increased competition from other private lodges that are subsidized by government agencies and from a non profit ski club, which is also subsidized by use of government owned land for which the ski club pays no rent. The proprietor must decide what she can do to meet this subsidized competition or whether she should sell her business before profitability disappears.     

Influential Observations in the Functional Measurement Error Model

In this work we propose Bayesian measures to quantify the influence of observations on the structural parameters of the simple measurement error model (MEM). Different influence measures, like those based on q-divergence between posterior distributions and Bayes risk, are studied to evaluate the influence. A strategy based on the perturbation function and MCMC samples is used to compute these measures. The samples from the posterior distributions are obtained by using the Metropolis-Hastings algorithm and assuming specific proper prior distributions. The results are illustrated with an application to a real example modeled with MEM in the literature.     

Social and academic profile of the university student of social work a comparative study in Spain,Argentina, and Venezuela

ABSTRACT

The article presents the results of an empirical investigation that aimed to analyze comparative socio-demographic characteristics, motivational aspects and professional role of students who attend universities. The contexts of research were University of Mar de Plata (Argentina), University of Murcia (Spain) and University of Zulia (Venezuela). The universe of research was 304 students, with the participation of a total of 253 (TR 83,2%), 109 from University of Murcia—Spain—100 from University of Mar del Plata—Argentina and 44 from University of Zulia—Venezuela. Two hundred and forty-four measuring instruments were checked favorably. The results of the research allowed to highlight significant coincidences in most of the variables studied. In the analysis of self-perceived personality styles, there is high coincidence both in style (attributed qualification) and score (assigned quantification). At the three universities, the docent–student relationship is a positive variable that affects the favorable self-perception beyond academic success. Design and implementation of programs based on the described characteristics are recommended.     

Development and Validation of the ADAS Scale and Prediction of Attitudes Toward Affective-Sexual Diversity Among Spanish Secondary Students

Violence against non-heterosexual adolescents in educational contexts remains a worrying reality, but no adequate attitudes toward affective-sexual diversity (AtASD) measure exists for Spanish adolescent students. We developed a 27-item scale including cognitive, affective, and behavioral aspects, which was completed by 696 secondary school students from the Madrid area. Factor analyses suggested a unidimensional model, Cronbach’s alpha indicated excellent scale scores reliability, and item calibration under the item response theory framework showed that the scale is especially informative for homophobic attitudes. A hierarchical multiple regression analysis showed that variables traditionally related to AtASD (gender, age, religion, nationality, perceived parental/peer attitudes, direct contact with LGB people) also were so in our sample. Moreover, interest in sexuality topics and perceived center’s efforts to provide AtASD education were related to better AtASD. Our scale was reliable and valid, and it may also prove useful in efforts to detect those students with homophobic attitudes and to guide interventions.     

Changes in foot posture during pregnancy and their relation with musculoskeletal pain: A longitudinal cohort study

Aim

To examine foot posture changes during the three trimesters of pregnancy and to determine whether there is a relationship between these changes and the pain experienced in this period.

Women’s Political Firsts and Symbolic Representation

ABSTRACT

The extent to which politics is still a “man’s game” is made evident every time a top political office has a female holder for the first time. These incredibly revealing moments may give a new social meaning to women in politics—women’s political presence—and women and politics—gendered social constructions about women’s capacity to rule. This article explores the types of gendered mediation underpinning the representation of first-ever women serving in historically male-dominated political offices in Spain. It shows that gender media frames are pervasive, which may lead to an effective annihilation of women’s symbolic representation.     

Influence Diagnostics in log-Birnbaum-Saunders Regression Models

In this paper we present various diagnostic methods for a linear regression model under a logarithmic Birnbaum-Saunders distribution for the errors, which may be applied for accelerated life testing or to compare the median lives of several populations. Some influence methods, such as the local influence, total local influence of an individual and generalized leverage are derived, analysed and discussed. We also present a connection between the local influence and generalized leverage methods. A discussion of the computation of the likelihood displacement as well as the normal curvature in the local influence method are presented. Finally, an example with real data is given for illustration.     

Conquering the minds, conquering Iraq: The social production of misinformation in the United States - a case study

In the lead-up to the Iraq War, the Bush administration rallied the American public for war via claims that they held unassailable evidence that Iraq possessed weapons of mass destruction and through the insinuation that links existed between Iraq and al Qaeda, and Iraq and the 11 September 2001 attacks. Despite the introduction of compelling evidence that these claims were false, more than 18 months after the official end of the war half of the American population continued to believe that either weapons of mass destruction had been found or that Iraq possessed a developed program for creating them. The prevalence of these misperceptions suggests important questions: How and why could such a significant percentage of the population remain so misinformed? What was the social process leading to the widespread adoption of misinformation? And what were the political effects of these misperceptions? This article proposes an analytical model that outlines both the production of these misperceptions and their political ramifications. It argues that the misperceptions about the Iraq war were socially produced via a complex interaction between a variety of factors including: the general climate of fear in America in the post-9/11 era, Bush administration agenda-setting strategies, and brokering between the political and communication establishments.