Classifying At‐Risk High School Youth: The Influence of Exposure to Community Violence and Protective Factors on Academic and Health Outcomes

Using cluster analysis, 789 predominately Latino and African American high school youth were classified into varying academic at‐risk profiles using self‐reported levels of academic confidence, motivation to attend school, perceived family support, connections with teachers and peers, and exposure to violence. Six clusters emerged, 5 of which were identified as “at‐risk.” The clusters were examined in relation to academic stress, health status, grades, and school retention. Exposure to violence was one distinguishing feature of youth identified as most vulnerable, vulnerable, and resilient; however, youth identified as resilient recorded better academic outcomes.     

Performance models for unreliable flexible manufacturing systems

This paper deals with the analysis and application of queueing models for single and multi stage flexible manufacturing systems that are subject to resource failure. Exact results are derived for the single stage queueing system. Two approximations are presneted for the multi stage queueing system as a closed network. We validate the approximations by comparing their performance estimates against the exact global balance solution.     

Existing Diversity and Judicial Selection: The Role of the Appointment Method in Establishing Gender Diversity in State Supreme Courts

Objectives . To explore differences in the appointment and election method of selecting state high court justices in promoting gender diversity, and to explore the effect of existing gender diversity within the political institutions on the selection of women to office. Methods . Our data include all justices who have been selected to state courts of last resort from 1980 through 1997. We use logistic regression analysis to test the effect of existing gender diversity on a high court on the likelihood that a woman will be selected to fill a vacancy. Results . Women are significantly more likely to be selected to a state high court when initially appointed, and this effect is particularly pronounced when the governor is Democratic. When an appointment system is used, women are much more likely to be appointed to an all-male court than to a gender-diverse court. Conclusions . Appointment systems are more likely to create gender diversity on state courts; however, this effect operates primarily to diversify all-male courts. This difference between appointment and election systems may reflect differences in knowledge between elite actors and the mass public about the composition of the institution.     

The Adaptive Success Identity Plan (ASIP): A Career Intervention for College Students

The Adaptive Success Identity Plan (ASIP) uses the construct of success identity as the core of a career intervention program. Three empirical studies (N > 2,000) explored the success identity construct and its application in a structured career intervention. Study 1 provided reliability and validity evidence of the measures. Study 2 indicated that programming efforts targeting family involvement, self-efficacy, and stress and time management should enhance a number of college outcomes. Study 3 found that students who received the ASIP intervention were more likely to use the success identity construct in defining their role in college success.     

Why Do Interest Groups Engage the Judiciary? Policy Wishes and Structural Needs*

Objectives. We test two competing explanations in order to answer the question: Why do organized interests choose to engage in advocacy behavior? The first turns on the notion that concerns with policy success are the principal forces affecting a group's choice. To a lesser degree, issues of group maintenance have also been identified as entering into organized interests' decisional calculus. Method. Using survey data supplemented with confidential interviews of organized interests, we systematically examine the power of both accounts to explain the decision of groups to locate their energies in the federal judiciary. Consequently, in the penultimate section of the article, we specify and test a comprehensive model of interest group litigation behavior. Results. In the resulting multivariate analysis, we find that forces associated with both avenues of explanation for interest group advocacy behavior have substantial statistical purchase and empirical traction. Conclusion. Our findings did not show a dominate role for maintenance concerns; however, clearly, a group's assessment of where, and possibly whether, to act is not an easy calculation based on the receptiveness of a venue and the available balance in the bank account. Groups must attend to their members and their competition. Explanations of group advocacy omitting such concerns are inherently flawed.     

A TENANT VACANCY MODEL

A stochastic model of the vacancy/occupancy pattern of a collection of rental units (a building) is used to obtain expressions relating vacancy rates to measurable market parameters. The model is well known in queueing theory, but yields new insigts when interpreted in the above context. By investigating the effects of the number of units, the mixture of units, and the “start-up” time, one can obtain a number of useful principles with implications for public and private planning.