Interregional Migration Modeling via Entropy and Information Theory

In attempting to model gross migration flows, as distinct from net flows, entropy and information theory models supplement those from the demographic tradition. However, clear differences exist between these two classes, including the type of origin and destination information which needs to be supplied, the relationship between the overall decision to migrate and the conditional choice of destination, the role of behavioral variables other than distance, and the expected predictive performance. In this paper, an enhanced interregional migration model is introduced which attempts a further integration of both the above classes. A linear version of the model is used for exploratory data analysis on a large Australian population census data set. Several alternative hypotheses are then tested with the general model. Some guidelines are also indicated toward developing a fully dynamic version of the model as well as a formal hierarchical framework.     

Public School Search Policies and the "Politics of Sin"

In recent years, high school students have been subjected to greater levels of drug searching and surveillance on school grounds. The effect of such searching is potentially wide-ranging, because public schools "play an important role in socializing students according to the norms and mores of society" ( Vergari, 2000 ). Using the "morality politics" framework, this study reports and analyzes the presence of random, suspicionless drug searches in the Nebraska public schools. Whereas most studies of morality policy have focused on the state as the unit of analysis, we consider the perceptions, attitudes, and behaviors of principals in regards to drug policies in schools. Our findings, based on a survey of 181 high school principals, reflect several features of morality policy. There has been a significant rise in the number of random drug searches, despite the principals' observation that these measures neither lessen drug use nor catch perpetrators. The most important predictors of drug policy are pressure from local sources, perception of the problem within the community (but not the schools), and the racial composition of schools. Principals articulate limited concern for student rights, and students largely accept searches without resistance. In the discussion, we consider these findings in light of recent court rulings and introduce the potential ramifications of waging the drug war in our nation's classrooms and hallways.