Scheduling Updates of Probabilistic Risk Assessments: The Arkansas Nuclear One-Unit 1 Experience

This paper presents the results of a study that identified how often a probabilistic risk assessment (PRA)should be updated to accommodate the changes that take place at nuclear power plants. Based on a 7-year analysis of design and procedural changes at one plant, we consider 5 years to be the maximum interval for updating PRAs. This conclusion is preliminary because it is based on the review of changes that occurred at a single plant, and it addresses only PRAs that involve a Level 1 analysis (i.e., a PRA including calculation of core damage frequency only). Nevertheless, this conclusion indicates that maintaining a useful PRA requires periodic updating efforts. However, the need for this periodic update stems only partly from the number of changes that can be expected to take place at nuclear power plants–changes that individually have only a moderate to minor impact on the PRA, but whose combined impact is substantial and necessitates a PRA update. Additionally, a comparison of two generations of PRAs performed about 5 years apart indicates that PRAs must be periodically updated to reflect the evolution of PRA methods. The most desirable updating interval depends on these two technical considerations as well as the cost of updating the PRA. (Cost considerations, however, were beyond the scope of this study.)     

Plaid designs for the evaluation of training for medical practitioners

The training of medical practitioners to improve the practitioner/patient relationship may be difficult, as limitations often exist on the choice of patients included in the study. A specific study of this type of training is given. It is proposed that a simple modification and generalization of Yates' plaid-square designs be used. It is shown that a replicated plaid-design incorporates as a special case the criss-cross or strip-plot design. The usefulness of these designs in studies of the training of medical practitioners is illustrated. The basic characteristics of their analysis are outlined.     

The control of bank exposure to risk

This article describes the major risks inherent in operating a bank. By analyzing the individual component elements of that risk it shows how the major risks may be reported and controlled. The analysis also portrays some of the major considerations that require attention if the risks are to be minimized.     

Households’ Net Worth Accumulation Patterns and Young Adults’ Financial Health: Ripple Effects of the Great Recession?

We examined households’ dynamic patterns of net worth accumulation between 1999 and 2009 and asked whether these patterns related to the financial health of young adults growing up in those households. Two patterns of net worth emerged—the first remained high and stable and the second experienced a precipitous decline between 2007 and 2009. Young adults who grew up in households with high and stable net worth also experienced the greatest benefit in financial health. Given wealth losses in the wake of the Great Recession and the ripple effects those losses may have had—and may continue to have—on households and their children, policies that stimulate wealth accumulation may be feasible and timely strategies for improving financial health.     

Kinship care and issues in permanency planning

Kinship caregivers are a child-care resource for families experiencing stress or temporary parenting due to illness, incarceration, or death of a parent. This article examines whether and how felt caregiver burden influences the reported propensity of caregivers to want to adopt the children in their care. Kinship caregivers who were enrolled in KinNET completed the survey (N = 102) and the data were entered anonymously into SPSS for analysis. Their mean age was 57.51 years (SD = 10.13), 95% were female (SD = .19), and two-thirds were non-white (SD = .73). Using “likelihood of adopting the child in my care,” as the outcome variable in the linear regression analysis, caregiver’s age, monthly income, and total hours employed were significant predictors. Total pressures, family service needs, and physical problems scales were not statistically significant predictors. The adjusted R square was .439 and significant (.006). Understanding the factors that are predictive of adopting children in kinship care will help programs target services more effectively. Helping kinship caregivers and the children in their care is also important in promoting their health and social well-being.     

Moving and union dissolution

This paper examines the effect of migration and residential mobility on union dissolution among married and cohabiting couples. Moving is a stressful life event, and a large, multidisciplinary literature has shown that family migration often benefits one partner (usually the man) more than the other Even so, no study to date has examined the possible impact of within-nation geographical mobility on union dissolution. We base our longitudinal analysis on retrospective event-history data from Austria. Our results show that couples who move frequently have a significantly higher risk of union dissolution, and we suggest a variety of mechanisms that may explain this.     

Transforming Sex: An Interview with Joanne Meyerowitz,Ph.D. Author of How Sex Changed: A History of Transsexuality in the United States

Christine Jorgensen's widely publicized sex reassignment surgery in 1952 brought transsexualism to worldwide attention and fostered medical interest in transsexualism. Joanne Meyerowitz has traced the history of Jorgensen's personal odyssey, the medical history of transsexualism, and the broader impact of transsexualism on United States culture. In this interview, Meyerowitz discusses how she came to this project and some of its theoretical and methodological challenges. Finally, she sets her historical work in the context of contemporary gender and transgender politics.