The purpose of this study was to examine social factors that predicted adolescent smoking transition from nonsmoking or experimental smoking to more advanced stages of smoking behavior during a three-year span. A national cohort sample of adolescents (N=7,960) who participated in the 1989 and 1993 Teenage Attitudes and Practices Survey (TAPS I and TAPS II, respectively) was used for this study....

By definition, “consequentialist” behaviour in finite decision trees is explicable by its consequences. Both cost-benefit tests and “consequentialist” choices of economic policy necessarily require distributional judgements. These should emerge from a social welfare objective incorporating interpersonal comparisons. To accommodate them, Arrow’s IIA condition should be weakened to independence o...

Many studies have shown that women are under-represented in tenured ranks in the sciences. We evaluate whether gender differences in the likelihood of obtaining a tenure track job, promotion to tenure, and promotion to full professor explain these facts using the 1973-2001 Survey of Doctorate Recipients. We find that women are less likely to take tenure track positions in science, but the gende...

background: the rapid growth of computer games, has taken a major part of teenagers leisure time. the improper and overuse of these games, can be considered as physical, mental and social threats. the goal of this study was to determine the relationship between playing computer games and students’ aggression and academic progress.   methods: in this cross- sectional study, 292 students in grade...

This paper reports on the progress that has been made in the Modelling and Simulation for e-Social Science (MoSeS) project at the University of Leeds. This project seeks to use e-Science techniques to develop a national demographic model and simulation of the UK population specified at the level of individuals and households. The architecture of MoSeS is presented and discussed, with particular...

Due to the outsourcing of many low level computing jobs, many students have a perception that there are very few computer science related jobs in the United States. Consequently, the number of students majoring in computer science has been decreasing. This project attempts to use social media as a means of attracting more students to study computer science and software engineering by exposing 1...