A family of repeated measurements models

A general family of multivariate distributions for repeated measures can be obtained by applying the Laplace transform of a gamma distribution to the integrated intensity function of any continuous distribution on the positive real line. Both clustering and serial dependence can be handled. The response variable may be counts, durations between events, or any continuous positive-valued measurements.     

Building a National Strategy for Digital Preservation: Issues in Digital Media Archiving

Abstract

Workflow mapping can yield valuable results wherever complex processes are used. Some of its many benefits include knowledge retention, identification of inefficiencies, and more effective decision making. However, despite the promise of improved productivity and stewardship of library resources, tackling diagrams of complex and often long-unexamined workflows can seem too daunting a task to even attempt—at least without the right tool. This review takes a look at the robust features for flowchart creation offered by Lucidchart, a free online software that greatly reduces the challenges of constructing complicated diagrams. Lucidchart’s intuitive interface and built-in library of templates and design elements bring the benefits of visual mapping well within the reach of busy librarians and managers attempting to chart, understand, and streamline workflows in their units.     

Valuing publicly sponsored research projects: Risks,scenario adjustments,and inattention

Survey-based choice scenarios used to value non-market public goods typically preclude any risk that the benefits described may not be delivered. Our survey specifies explicit risks of (a) outright program failure and (b) program redundancy due to possible private sector substitutes. Additionally, most analyses assume that survey subjects fully accept these scenarios and that all provided information receives their complete attention. Our discounted expected utility model of choice accommodates both these objective risks and the possibility of subjective scenario adjustment or selective inattention by respondents. We then counterfactually simulate willingness-to-pay in the absence of these distortions.

Re-Examining Evelyn Hooker: Setting the Record Straight with Comments on Schumm's (2012) Reanalysis

Evelyn Hooker's research comparing the mental health of 30 male homosexuals to 30 male heterosexuals may be the most influential study in the history of social science. The American Psychological Association (APA) claims her work was the major reason it began advocating for acceptance of homosexuality. It led the American Psychiatric Association in 1973 to eliminate homosexuality from the Diagnostic and Statistical Manual of Mental Disorders. And it impacted the U.S. Supreme Court's 2003 legalization of sodomy in Lawrence v Texas.

Hooker reportedly believed experts would be unable to distinguish homosexuals from heterosexuals on psychological tests. Re-examination of her work indicates that Hooker's study was neither rigorous nor reliable. Among other problems, homosexual subjects were easily identified on test protocols; her reports of how she obtained her samples were incomplete and contradictory; and her study generated results supportive of obsession/compulsivity in homosexuals.

Thus Hooker's study was seriously flawed. Moreover, because it was marketed by the APA as central in transforming homosexual activity from an illness/crime into acceptable behavior—yet Hooker did not correct those who mischaracterized her work—APA misrepresentations of Hooker over the past 40 years appear to be more in line with ideology than science.     

The use of sociograms to explore collaboration in child protection conferences

The Strengthening Families child protection conference model attempts to empower parents' participation in conferences and to enhance collaboration between conference participants. This paper, which is part of a broader study looking at the implementation of the Strengthening Families model across a county council in England, UK, explored the use of ‘power’ and ‘mutual interaction’ in both traditional and Strengthening Families child protection conferences. Data was collected using sociograms which were recorded during observations of the two types of conferences. Sociograms were analysed in order to identify patterns in terms of ‘power’ and ‘communication’ together with the use of the ‘group cohesion index’ which enabled us to draw conclusions about the degree of interaction between conference participants.Findings indicated a difference between the use of power in traditional and Strengthening Families conferences. In traditional conferences the power was mostly static (held by the chair), and in the Strengthening Families conferences power was shifted from the leader of the collaboration (chair) to the people who administer the collaboration (conference participants). Also, in the Strengthening Families model more interaction between conference participants and better group coherence were evident; however, in both types of conference communication was limited between the professionals. Sociograms proved a useful method for exploring group dynamics in the context of child protection conferences. It is suggested that a broader understanding of the underpinning principles of the Strengthening Families model is needed to successfully empower parents' participation in conferences and to enhance collaboration between conference participants.     

‘Your Mind is the Battlefield’: South African Trainee Health Workers Engage with the Past

A key problematic in any post‐conflict society is how to account for the injustices of the past, while at the same time making a space for the development of a shared future. In South Africa, there is an increasing demand for health and social service workers, who are required to address the impact of an unjust past upon individuals and communities. Educators of health and social service workers are thus faced with the complexities of finding pedagogical practices that would allow students to recognize these past injustices and their impact on present problems. This article looks at data taken from a teaching project across two South African universities, where students from three professions engaged in online discussions about their personal, social and future professional identities. During some of these discussions, students spontaneously entered into disagreements about the relevance or irrelevance of the past in modern‐day South Africa. The data indicates considerable reluctance on the part of some students to talk about the past and its relevance to the present. The authors suggest that while talking about the past is both difficult and potentially painful for students, it is nevertheless the responsibility of educators to facilitate such discussions among trainee professionals.     

Modeling Quality-Adjusted Life Expectancy Loss Resulting from Tobacco use in the United States

Purpose  To describe the development of a model for estimating the effects of tobacco use upon Quality Adjusted Life Years (QALYs) and to estimate the impact of tobacco use on health outcomes for the United States (US) population using the model. Method  We obtained estimates of tobacco consumption from 6 years of the National Health Interview Survey (NHIS). In addition, NHIS data were used to impute the Quality of Well-Being (QWB) Scale using a new methodology known as QWBX1. The QWB places health status on a continuum ranging from death (0.0) to full functioning without symptoms (1.0). The method allows the adjustment of life expectancy for reduced quality of life associated with health conditions. NHIS data were matched to the National Death Index for 14,464 deaths occurring by December 31, 1997. The analysis is limited to adults between the ages of 18 and 70 years. Results  Quality of Well-Being scores were broken down by age and for six smoking categories: (1) non-smokers, (2) those who smoke 1–10 cigarettes per day, (3) 11–20 cigarettes per day, (4) 21–30 cigarettes per day, and (5) 31–40 cigarettes per day, and (6) 40 or greater cigarettes per day. There was a systematic relationship between current tobacco use and health-related quality of life at each point along the age spectrum and there was a clear and systematic separation of quality-adjusted life expectancy by number of cigarettes smoked per day. Teenagers who continue to smoke loose 3.5 QALYs between ages 18 and 70 in comparison to non-smokers. A greater portion in the loss in QALE is attributable to quality of life than to shorten life expectancy. Conclusions  The overall goal of Healthy People 2010 is to increase Years of Healthy Life (or QALE) in the United States. Each year, tobacco use results in hundreds of thousands of quality-adjusted life years lost. Combined models of morbidity and mortality incorporating a range of tobacco consumption levels are required to best represent the impact of tobacco use. Supported by a Grant 11RT-0243 from the Californian Tobacco Related Disease Research Program (TRDRP)