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101.
Mark R. Pogrebin Paul B. Stretesky Alexandra Walker Tara Opsal 《Symbolic Interaction》2015,38(3):413-430
Research on status rejection has developed considerably over the past two decades and is applied in a number of different settings to better understand criminal and deviant behavior. Our research contributes to that body of work by examining the ways in which status rejection may create a potentially humiliating dynamic for individuals on parole. Specifically, we use in‐depth interviews with parolees to illustrate how the parolee identity can promote the experience of status rejection and simultaneously foster conditions for humiliation—an emotional state that may impede one's ability to both (re) construct a conventional identity and reintegrate back into one's community. 相似文献
102.
We discuss the problem of selecting among alternative parametric models within the Bayesian framework. For model selection problems, which involve non‐nested models, the common objective choice of a prior on the model space is the uniform distribution. The same applies to situations where the models are nested. It is our contention that assigning equal prior probability to each model is over simplistic. Consequently, we introduce a novel approach to objectively determine model prior probabilities, conditionally, on the choice of priors for the parameters of the models. The idea is based on the notion of the worth of having each model within the selection process. At the heart of the procedure is the measure of this worth using the Kullback–Leibler divergence between densities from different models. 相似文献
103.
Being an effective and intentional youth practitioner involves more than planning. It includes being able to react intelligently to the many difficult situations that arise. Practitioners in out-of-school and after-school settings regularly confront complex dilemmas that emerge in their daily work. They face situations where competing objectives, values, and warrants come into conflict, situations that can pit the developmental needs of youth, ethical concerns, administrative requirements, and other considerations against each other. Using examples from their research that weigh professional and personal judgments, the authors illustrate the complexity of these practice dilemmas and the considerations program staff included as they responded to these challenging situations. 相似文献
104.
Walker JA 《New directions for youth development》2006,(112):75-92, 9
Early adolescents benefit most from program opportunities where they can be actively engaged in their own learning and development and where there is a good fit between their developmental needs and the intentional learning opportunities provided by the program. The theoretical framework presented here suggests that the two most important features of an engaging youth program are an intentional ethos of youth development and an intentional strategy to design and implement developmentally appropriate learning experiences. Practical examples from research and community practice are used to illustrate program strategies for early adolescents that emphasize intentional thought, decisions, and actions every step of the way. 相似文献
105.
Louise Choo Stephen G. Walker 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》2008,171(2):395-405
Summary. For rare diseases the observed disease count may exhibit extra Poisson variability, particularly in areas with low or sparse populations. Hence the variance of the estimates of disease risk, the standardized mortality ratios, may be highly unstable. This overdispersion must be taken into account otherwise subsequent maps based on standardized mortality ratios will be misleading and, rather than displaying the true spatial pattern of disease risk, the most extreme values will be highlighted. Neighbouring areas tend to exhibit spatial correlation as they may share more similarities than non-neighbouring areas. The need to address overdispersion and spatial correlation has led to the proposal of Bayesian approaches for smoothing estimates of disease risk. We propose a new model for investigating the spatial variation of disease risks in conjunction with an alternative specification for estimates of disease risk in geographical areas—the multivariate Poisson–gamma model. The main advantages of this new model lie in its simplicity and ability to account naturally for overdispersion and spatial auto-correlation. Exact expressions for important quantities such as expectations, variances and covariances can be easily derived. 相似文献
106.
S.J. Hatjispyros Theodoros Nicoleris Stephen G. Walker 《Journal of statistical planning and inference》2008
This paper provides a novel approach to constructing bivariate prior distributions. The idea is based on the notion of partial exchangeability. In particular, in a simple extension of the exchangeable sequence, we create two dependent exchangeable sequences via a branching mechanism. This implies the existence of a bivariate prior distribution. 相似文献
107.
108.
109.
A. Babiker J. Darbyshire T. Peto & S. Walker 《Journal of the Royal Statistical Society. Series A, (Statistics in Society)》1998,161(2):239-249
The first randomized trial of antiviral therapy in human immunodeficiency virus (HIV) disease included 282 patients with acquired immune deficiency syndrome (AIDS) or AIDS-related complex and was stopped in 1986 after an average follow-up of 4 months because of a substantial reduction in mortality in the group who received zidovudine (AZT). The era of anti-HIV treatment had begun. This paper discusses some of the difficulties which have emerged over the subsequent 10 years as new anti-HIV drugs have been developed requiring evaluation in clinical trials. The trials in which the British Medical Research Council has played a major role (the Concorde, Alpha and Delta trials) and some of the key trials conducted by the AIDS Clinical Trials Group (ACTG) (the ACTG 019 and ACTG 175 trials) and the Community Programs for Clinical Research on AIDS (CPCRA) (the CPCRA 007 trial) in the US will be used to illustrate some of the issues faced by clinical trialists and governmental regulatory agencies in the evaluation of therapies for a disease which, in spite of advances in therapy, still has a high mortality. 相似文献
110.
V Walker S Gatzert-Snyder 《Journal of psychosocial nursing and mental health services》1991,29(6):9-13
1. This study determined how involvement with an earthquake affected patient care delivery and ascertained what nurses need to continue providing safe and efficient care in future disasters. 2. Although 60% of the staff had experienced a previous disaster, the literature described that learned coping does not automatically "transfer" to present loss experiences. 3. Providing staff with debriefing sessions and other support groups is helpful in the post-trauma period. At all levels, there is a need to communicate concerns and to be involved in disaster drills and other disaster preparedness sessions. 相似文献