Managing a depressed and suicidal loved one at home: impact on the family

This qualitative study examined the process families use to care for a depressed and suicidal family member at home. The grounded theory method was used for data collection and analysis. Seventeen family members were interviewed. The data revealed the basic social process of Maintaining Vigilance Through Managing, which depicts an ongoing, cyclical process that begins at a point of not knowing. Family members then move on to identifying, then gaining awareness, followed by knowing or understanding. This allows them to take action, then to proceed to watching and waiting. They then return to gaining awareness armed with new knowledge or understanding. It is at this point that the process becomes cyclical. It varies in intensity over time, depending on the level of depression and the risk for suicide. To preserve the integrity of these families, nurses must help develop strategies to guide them through this process as they care for their depressed and suicidal loved one.     

Investment in Facility Changeover Flexibility for Early Entry into High‐Tech Markets

A model is introduced to analyze the manufacturing‐marketing interface for a firm in a high‐tech industry that produces a series of high‐volume products with short product life cycles on a single facility. The one‐time strategic decision regarding the firm's investment in changeover flexibility establishes the link between market opportunities and manufacturing capabilities. Specifically, the optimal changeover flexibility decision is determined in the context of the firm's market entry strategy for successive product generations, the changeover cost between generations, and the production efficiency of the facility. Moreover, the dynamic pricing policy for each product generation is obtained as a function of the firm's market entry strategy and manufacturing efficiency. Our findings provide insights linking internal manufacturing capabilities with external market forces for the high‐tech and high‐volume manufacturer of products with short life cycles. We show the impact of manufacturing efficiency and a firm's ability to benefit from volume‐based learning on the dynamic pricing policy for each product generation. The results demonstrate the benefits realized by a firm that works with its manufacturing equipment suppliers to develop more efficient and flexible technology. In addition, we explore how opportunities afforded by pioneer advantage enable a firm operating a less efficient facility to realize long term competitive advantage by deploying an earlier market entry strategy.     

Adolescents' Triangulation in Marital Conflict and Peer Relations

This study examined the association between youths' triangulation in marital conflict and three aspects of their peer relations in 416 families during early adolescence. A 4‐wave, longitudinal research design was used. As hypothesized, triangulation was associated negatively with perceived support from friends and positively with perceived peer rejection. Triangulation was a risk factor for both sons and daughters. Adolescent problem behavior did not mediate the significant association between triangulation and perceived friendship support. Adolescent problem behavior, particularly internalizing problems, completely me diated the association between triangulation and adolescents' perceptions of peer rejection, suggesting the important developmental role of adolescents' anxiety, depressive affect, and withdrawal. The implications of these findings are discussed in terms of Bowen's multigenerational family systems theory and social learning principles.     

Cumulative Environmental Risk and Youth Problem Behavior

Using data from Wave 1 (n = 5,070) and Wave 2 (n = 4,404) of the National Longitudinal Study of Adolescent Health, we examined the relationship between cumulative risk exposure and youth problem behavior. Cross‐sectional analyses revealed a positive, linear association between cumulative risk and problem behaviors. The association between cumulative risk and externalizing problems was stronger for White youth than for Black youth. The association between cumulative risk and internalizing problems was stronger for girls than for boys, and stronger for White youth than for Black and Hispanic youth. Cumulative risk predicted change over time in internalizing problems. Findings support the theoretical notion that adolescents experience diminished psychological comfort when risk factors are present across several social domains.     

Canonical correlation analysis in the definition of weight restrictions for data envelopment analysis

This work investigates the use of canonical correlation analysis (CCA) in the definition of weight restrictions for data envelopment analysis (DEA). With this purpose, CCA limits are introduced into Wong and Beasley's DEA model. An application of the method is made over data from hospitals in 27 Brazilian cities, producing as outputs average payment (average admission values) and percentage of hospital admissions according to disease groups (International Classification of Diseases, 9th Edition), and having as inputs mortality rates and average stay (length of stay after admission (days)). In this application, performance scores were calculated for both the (CCA) restricted and unrestricted DEA models. It can be concluded that the use of CCA-based weight limits for DEA models increases the consistency of the estimated DEA scores (more homogenous weights) and that these limits do not present mathematical infeasibility problems while avoiding the need for subjectively restricting weight variation in DEA.     

Some Remarks on Testing Overdispersion in Zero-Inflated Poisson and Binomial Regression Models

This note extends the score test statistics for overdispersion in Poisson and binomial regression models (Dean, 1992 Dean , C. B. ( 1992 ). Testing for overdispersion in Poisson and binomial regression models . J. Amer. Statist. Assoc. 87 : 451 – 457 .[Taylor & Francis Online], [Web of Science ®] , [Google Scholar]) to the zero-inflated models. Some general results are obtained, and examples illustrate the application of the extended results.