Casino gambling in private school and adjudicated youngsters: A survey of practices and related variables

This study provides additional information about casino gambling practices in two adolescent samples. Specifically, 109 adolescents from a religious high school and 84 adolescents from a juvenile detention facility in Las Vegas, Nevada were surveyed. Of these, 71 (36.8%) were found to gamble regularly (58 males, 13 females, mean age 15.9 years). Results indicated many similarities among the two groups. The overall sample appeared to have a strong affinity for casino gambling, were diverse in their practices and reasons for gambling, reported a variety of emotional and physiological behaviors when gambling, occasionally experienced problems from casino gambling, and had parents who generally approved and were aware of their children's gambling behavior. The accessibility and family-oriented nature of many new casinos may be responsible for these effects.The authors thank Nicole Giangregorio and Ned C. Silver for their assistance. Portions of this paper were presented at the meeting of the Rocky Mountain Psychological Association, Boulder, CO.     

Reclassifying causes of death to study the epidemiological transition in The Netherlands, 1875–1992

This article describes a method for reclassifying causes of death in the Netherlands for the period 1875–1992. Two criteria should be met to obtain a useful classification to study the epidemiological transition. First, the categories should be nosologically continuous over the period under study and second, there should be enough detail in causes which are important in the context of the epidemiological transition viz. communicable diseases, non-communicable diseases and external causes of death. A method developed by Vallin and Meslé (1988), which involves ‘dual correspondence tables’ and ‘fundamental associations’, was used to create nosologically continuous categories. These categories were tested for statistical continuity during the transition years of one ICD-revision to the next, using ordinary least squares regression analysis. The reclassification procedure resulted in a nested classification consisting of three levels of refinement of causes of death: 27 causes, 1875–1992; 65 causes, 1901–1992; and 92 causes, 1931–1992. On the basis of this classification, 43% of all deaths in 1875–79 and 98% of all deaths in 1992 could be allocated to either communicable diseases, non-communicable diseases or external causes.     

Industrial policy: The case for national strategies for world markets

This article considers the objectives of an industrial policy that would develop national strategies for world markets. It describes the tools used to implement such strategies and how the strategies would be organized. The author also considers some of the advantages and disadvantages of developing national strategies for world markets.     

The size of the nonstationary component and its effect on tests for unit roots

We consider a nonstationary time series that is composed of a stationary and nonstationary component. Monte Carlo experiments show that common unit root tests have probabilities of committing a type I error that significantly exceed the level of significance. We find that the probabilities vary according to the relative size of the nonstationary component.     

Automatic starting point selection for function optimization

Traditional (non-stochastic) iterative methods for optimizing functions with multiple optima require a good procedure for selecting starting points. This paper illustrates how the selection of starting points can be made automatically by using a method based upon simulated annealing. We present a hybrid algorithm, possessing the accuracy of traditional routines, whilst incorporating the reliability of annealing methods, and illustrate its performance for a particularly complex practical problem.Now at the Statistical Laboratory, University of Cambridge, 16 Mill Lane, Cambridge, CB2 1SB, UK.     

THE SOCIAL CONTEXT OF TECHNOLOGICAL CHANGE: The Case of the Retail Food Industry

Technological innovations result not just from advances in science, but also social system reorganization. Reorganization is problematic, as various organizations and constituents pursue their interests and causes. Expanding on previous work in the economics and sociology of innovation, three cases from the retail food industry (frozen meat, boxed beef, and scanners) illustrate the process described in a politicized-context model of innovation. Market context, political contingencies, and established social relations all influence innovations. Thus, including these factors in the politicized-context model provides better understanding of the particular paths of innovation.     

Some practical considerations on multi-server queues with multiple poisson arrivals

A simple approximate formula is presented and evaluated in this paper for the steady-state average number of customers in the M^(x)/G/r queueing system. The derivation of the formula is based on a heuristic argument. Comparisons between approximate results and the ones obtained analytically or by extensive simulation experiments seem to suggest that the degree of approximation achieved is satisfactory for most practical purposes.