Subroutines for computing minimum variance unbiased estimators of functions of the parameters in the normal and gamma distributions

In this paper subroutines are given which calculate the uniformly minimum variance unbiased estimators (UMVUE’ s) of a broad class of functions of the parameters of the normal and gamma distributions. These subroutines employ the new expressions for the UMVUE’ s given recently by Gray, Watkins, and Schucany (1973), Woodward and Gray (1975), and Gray, Schucany, and Woodward (1976). In order to employ the subroutines here the user need only be able to provide a FORTRAN function subprogram to calculate derivatives of the function, either analytically or numerically.     

A Cognitive‐Affective Scale for Hurricane Risk Perception

The aim of this study was to develop a reliable and valid measure of hurricane risk perception. The utility of such a measure lies in the need to understand how people make decisions when facing an evacuation order. This study included participants located within a 15‐mile buffer of the Gulf and southeast Atlantic U.S. coasts. The study was executed as a three‐wave panel with mail surveys in 2010–2012 (T₀ baseline N = 629, 56%; T₁ retention N = 427, 75%; T₂ retention N = 350, 89%). An inventory based on the psychometric model was developed to discriminate cognitive and affective perceptions of hurricane risk, and included open‐ended responses to solicit additional concepts in the T₀ survey. Analysis of the T₀ data modified the inventory and this revised item set was fielded at T₁ and then replicated at T₂. The resulting scales were assessed for validity against existing measures for perception of hurricane risk, dispositional optimism, and locus of control. A measure of evacuation expectation was also examined as a dependent variable, which was significantly predicted by the new measures. The resulting scale was found to be reliable, stable, and largely valid against the comparison measures. Despite limitations involving sample size, bias, and the strength of some reliabilities, it was concluded that the measure has potential to inform approaches to hurricane preparedness efforts and advance planning for evacuation messages, and that the measure has good promise to generalize to other contexts in natural hazards as well as other domains of risk.     

Effects of public transit policies on taxi drivers’ wages

We investigate the effects of two public transit policies, subsidization and privatization, on the wages of taxi drivers. In theory, transit operating subsidies benefit transit firms at the expense of the taxi industry and its employees. By contrast, the privatization policy of contractingout transit service to lower cost private providers is potentially beneficial to taxi firms and their drivers. Estimated wage equations confirm that transit operating subsidies have negatively affected taxi driver wages even as they have bolstered transit drivers’ wages. Transit privatization has had the predicted positive effect on taxi driver wages, all else held constant. These results suggest that a more accurate assessment of the effect of transit operating subsidies on labor costs must encompass their net effects on the labor costs of the entire urban transportation sector, not just the public transit industry.     

Ecological Risk Assessment Conceptual Model Formulation for Nonindigenous Species

This article addresses the application of ecological risk assessment at the regional scale to the prediction of impacts due to invasive or nonindigenous species (NIS). The first section describes risk assessment, the decision-making process, and introduces regional risk assessment. A general conceptual model for the risk assessment of NIS is then presented based upon the regional risk assessment approach. Two diverse examples of the application of this approach are presented. The first example is based upon the dynamics of introduced plasmids into bacteria populations. The second example is the application risk assessment approach to the invasion of a coastal marine site of Cherry Point, Washington, USA by the European green crab. The lessons learned from the two examples demonstrate that assessment of the risks of invasion of NIS will have to incorporate not only the characteristics of the invasive species, but also the other stresses and impacts affecting the region of interest.     

Career Salience of Institutionalized Adolescent Offenders

This study investigated self-esteem and career salience of institutionalized adolescent offenders in the context of Super's (1980) lifespan career development theory. Participants were 185 male adolescents. Results indicated that participation, commitment, and values expectations in home-family roles contribute significantly to self-esteem in adolescent offenders. Additionally, adolescent offenders differ from adolescent non-offenders on home-family and work roles, with adolescent offenders scoring higher. Implications for career counseling of institutionalized adolescent offenders for transition into the community are discussed.     

Minimal Treatment Approaches for Concerned Significant Others of Problem Gamblers: A Randomized Controlled Trial

The goal of this study was to examine the efficacy of minimal treatment interventions for concerned significant others (CSOs) of problem gamblers. One hundred and eighty-six participants (82% females, 56% spouses) were randomly assigned to one of three groups: the first minimal intervention group received a self-help workbook [based on behavioral principles, modified from the Community Reinforcement and Family Therapy (CRAFT) model] and the second minimal intervention group received the workbook plus telephone support. The control condition received a treatment resource information package. Overall, all participants reported significant improvement in personal and relationship functioning and gambling behavior and consequences at the 3- and 6-month follow-up. The data demonstrated differences in favor of the interventions in three areas: days gambling, satisfaction with the program, and number who had their needs met. There was no difference in the number who had entered treatment. It may be that CSOs require more guidance and follow-up support to achieve these goals using the CRAFT procedures and strategies.     

Culture,place and urban growth in the U.S. South

People’s connection to land is an important contributor to identity in traditional southern society. In small southern communities, to know where someone lives is to know who someone is because place assigns biography. Studies have investigated the physical and economic implications of landscape change in the South, but comparatively little research focuses on the impacts to culture of urban growth. We consider how sense of place (as an indicator of culture) may be impacted, over time, by physical and structural changes in a locale. This point of departure examines the temporal dimension of sense of place, or how place perceptions may vary as familiar places and practices are altered by landscape moderations. We review the literature on sense of place and changing Southern landscapes and also offer a conceptual framework for analyzing sense of place over the long-term.

Predicting objective physical activity from self-report surveys: a model validation study using estimated generalized least-squares regression

Physical activity measurements derived from self-report surveys are prone to measurement errors. Monitoring devices like accelerometers offer more objective measurements of physical activity, but are impractical for use in large-scale surveys. A model capable of predicting objective measurements of physical activity from self-reports would offer a practical alternative to obtaining measurements directly from monitoring devices. Using data from National Health and Nutrition Examination Survey 2003–2006, we developed and validated models for predicting objective physical activity from self-report variables and other demographic characteristics. The prediction intervals produced by the models were large, suggesting that the ability to predict objective physical activity for individuals from self-reports is limited.     

Subordinate social adaptability and the consequences of abusive supervision perceptions in two samples

The present investigation examined social adaptability as a moderator of the relationships between perceptions of abusive supervision and several work outcomes. Specifically, we hypothesized that individuals with lower levels of social adaptability would be more adversely affected by heightened levels of abusive supervision perceptions than employees with greater levels of social adaptability. Data from two samples offered strong support for the hypotheses. Specifically, employees with lower levels of social adaptability reported heightened job tension (i.e., Sample 1) and emotional exhaustion (Samples 1 & 2), as well as diminished job satisfaction (Samples 1 & 2) and work effort (Samples 1 & 2) as perceptions of abusive supervision increased, whereas employees with greater social adaptability skill were less strongly affected by their perceptions of abusive supervision. Contributions of the research to scholarship and practice, strengths and limitations, and directions for future research are discussed.