Career Planning Connections: Using the Computer to Match Students With Professionals in the Field

This article describes a computerized career resource network designed to assist in matching students, efficiently and cost-effectively, with professionals in their career fields of interest.     

A note on social capital and network content

As a guide to selecting name generators for social capital research, I use network data on a probability sample of heterogeneous senior managers to describe how they sort relations into kinds, and how the kinds vary in contributing to social capital. Managers sort relations on two dimensions of strength - intimacy (especially close versus distant) versus activity (frequent contact with new acquaintances versus rare contact with old friends) - and with respect to two contents - personal discussion (confiding and socializing relations) versus corporate authority (the formal authority of the boss and informal authority of essential buy-in). Comparing name generators for their construct validity as indicators of social capital, I compute network constraint from different kinds of relations, and correlate constraint with early promotion. The correlation is strong for the network of personal relations, zero for the network of authority relations, and strongest for personal and authority relations together. I close with research design recommendations for selecting name generators.     

Estimation of period-specific gross migration flows from limited data: Bi-proportional adjustment approach

Two models, hierarchical in terms of input data requirements, are proposed to estimate place-to-place gross migration flows during a specified time period. In the first, the input data required are lifetime migration flows and the marginal totals of period migration, usually available from national censuses. The estimational algorithm is a ‘bi-proportional adjustment’ technique (and its variant) that assumes structural similarity between lifetime and period migration flows. The second model is designed to account for possible structural deviations in recent migratory patterns. Calibration of the procedure to replicate Indian and Korean data confirms high validity of estimation.     

Conservatism of the Accident Sequence Evaluation Program HRA Procedure

This paper presents a limited assessment of the conservatism of the Accident Sequence Evaluation Program (ASEP) human reliability analysis (HRA) procedure described in NUREG/CR-4772. The data for this study are derived from simulator examination reports from the NRC requalification examination cycle for nuclear power plant operators. The ASEP procedure was used to estimate human error probability (HEP) values for critical tasks, and the HEP results were compared with the failure rates observed in the examinations. The ASEP procedure was applied by PNNL operator license examiners who supplemented the limited information in the examination reports with expert judgment based upon their extensive simulator examination experience. Comparison of the average of the ASEP HEP values with the fraction of the population actually failed and demonstrated that the ASEP HEP values are larger (conservative) by a statistically significant average factor of two. Partitioning of tasks into subgroups based on the ASEP HEP values and comparison of the subgroup average ASEP HEP values with observed subgroup failure rates showed little or no conservatism for small ASEP HEP values, but considerable conservatism for larger ASEP HEP values.     

The health of university athletes: attitudes, behaviors, and stressors

This study examined several aspects of the health of university athletes. Five areas of concern were targeted for investigation: general health background, use of drugs and alcohol, weight and eating behaviors, stress, and use of helping resources. The authors developed a questionnaire and used it to survey 27 varsity athletic teams at a major private university. The incidence of injuries was high; one third of the 247 student athletes surveyed reported sport-related injuries. Alcohol was much more frequently used than other drugs, and use tended to decrease during the competitive season. Significant differences between men and women athletes were found in off-season alcohol and marijuana use. Anabolic steroid abuse did not appear to be a major problem for this athlete population. Issues of diet, weight, and body image were found to be significantly different for women than for men. Although the incidence of bulimia and anorexia was low for both female and male athletes, it was clear that female athletes brought to their sport heightened concern for body image. The authors discuss the psychological and interpersonal implications that these findings have for the adjustment of female athletes. Injury and academics were perceived as the most stressful factors for both men and women, whereas weight and diet issues were a major stress factor for one third of the women. Given these data, specific recommendations are made for health professionals who work with college athletes.     

Sampling from the von Mises distribution via a comparison of random numbers

An algorithm is described for generating von Mises variates using Forsythe's method. The performance is analysed with respect to speed, and compactness. Conclusions are drawn as to when it is preferred to Best and Fisher's envelope rejection method.