Social Area Analysis in Comparative Perspective: Moscow in 1897 as a Preindustrial City

Shevky-Bell social area analysis was a postwar attempt to isolate the essential dimensions delineating intraurban subareas in modern communities. The premise of the present paper is that the Shevky-Bell model has not been given adequate study through comparative research. The purpose of the study is to test the usefulness of the Shevky-Bell model in an analysis of prerevolutionary Moscow, a major city with a preindustrial urban structure. The basic finding reported in this paper is that the rotated factors that emerge in an analysis of prerevolutionary Moscow resemble the Shevky-Bell model. However, the rotated factor matrix more specifically fits a deviant case found earlier by Van Arsdol et al. of Kansas City and of Schwirian and Matre of Mayaguez, Puerto Rico, in which fertility appears more clearly as a dimension of social rank than of familism. The factors also tend to be complex, suggesting a less differentiated community system. These results suggest that an advanced stage of community development is a pre-condition of the Shevky-Bell model as it was originally formulated.     

Emerging Genetic and Epigenetic Mechanisms Underlying Pubertal Maturation in Adolescence

The adolescent transition begins with the onset of puberty which, upstream in the brain, is initiated by the gonadotropin‐releasing hormone (GnRH) pulse generator that activates the release of peripheral sex hormones. Substantial research in human and animal models has revealed a myriad of cellular networks and heritable genes that control the GnRH pulse generator allowing the individual to begin the process of reproductive competence and sexual maturation. Here, we review the latest knowledge in neuroendocrine pubertal research with emphasis on genetic and epigenetic mechanisms underlying the pubertal transition.     

Assertive training for low-income black parents

An assertive training program for parents is described, which was implemented in the Detroit Public Schools Region 7 by therapists from the Wayne State University Psychology Clinic. Fifty-nine parents of preschool age children were trained for 5 consecutive weeks and at one follow-up session. The major goals of the program were to increase the self-esteem of family members and to promote a happier atmosphere in the home. Parents were enthusiastic about this approach and stated that the discussions helped them feel more confident and therefore they were able to handle specific problems with their children more effectively.This project was supported, in part, by a grant from the McGregor, Fund and the Eloise and Richard Webber Foundation.     

EXCHANGE RATE RISK and THE BID-ASK SPREAD: A SEVEN COUNTRY COMPARISON

This paper studies the determination of exchange market transaction costs. Using a large data set including seven currencies, it provides empirical support for the theoretical prediction of a positive relationship between the level of uncertainty regarding future prices and current transaction costs. In contrast to most previous work, it considers explicitly the problem of omitted transactions volume, showing that while estimators are less efficient and potentially inconsistent in the absence of the unavailable variable, the direction of potential coefficient bias is such that hypothesis tests regarding the importance of uncertainty are rendered more conservative.     

Union attainment of first contracts: Do service unions possess a competitive advantage?

This study examines differences between service and manufacturing unions with respect to first contract attainment and organizing efficiency. Service unions were found to have a higher first-contract attainment rate, larger election units, and longer campaigns. For cases where the union attained a first contract, there was no difference in efficiency between service and manufacturing unions. However, service unions enjoyed an advantage over manufacturing unions when overall organizing efficiency was examined. This paper is based on data collected for a dissertation written at the Graduate School of Business at Columbia University. I gratefully acknowledge the support of committee members David Lewin, James Kuhn, Casey Ichniowski, and Seymour Spilerman of Columbia and Charles A. O’Reilly III of the University of California at Berkeley. I also thank John Delaney for his many helpful insights and suggestions during the course of my research and Gerald Ferris, Shannon Ratcliff, and Rick Fuentes for comments on an earlier draft of this paper. This research was supported by the Industrial Relations Research Center and the Management Institute at Columbia University, and the Department of Management at Texas A&M University.