One-Loop Quadratic Divergences of the Dual Non-Linear Sigma Model in Four-Dimensional Spacetime

Following a review of the dual description of the non-linear sigma model we investigate the one-loop quadratic divergences. We use the covariant background field method for the general case and apply the results to the important example of $SU(2)$.Comment: 9 pages, LaTeX2e, no figures, uses axodraw package for Feynman diagrams. Axodraw available via anonymous ftp, ftp://ftp.nikhef.nl/pub/form/axodraw/export DVI version of preprint available via anonymous ftp or WWW; ftp://hep2.phys.soton.ac.uk/pub/preprints/rdsquad.dvi http://wwwhep.phys.soton.ac.uk/hepftp/pub/preprints/rdsquad.dv

Race and the evaluation of signal callers in the national football league

Until recently, the position of quarterback in the National Football League (NFL) was not an option for black athletes. Today many teams employ black quarterbacks, a development that might suggest race is no longer relevant when it comes to the evaluation of signal callers in the NFL. To examine this contention, this paper explores the relationship between player salary, performance, and race at the quarterback position over the period 1995 to 2006. We find that blacks and whites play this position differently. Specifically, black quarterbacks are more likely to run with the football. This skill, though, is not compensated in the market. Consequently, there is evidence that blacks face an uncompensated entry barrier in this particular occupation

Annual conference assesses banking risk

Banking structure ; Bank supervision

Would banks buy daytime fed funds?

Federal Reserve banks ; Electronic funds transfers ; Federal funds market (United States) ; Overdrafts

Race and the evaluation of signal callers in the national football league

Until recently, the position of quarterback in the National Football League (NFL) was not an option for black athletes. Today many teams employ black quarterbacks, a development that might suggest race is no longer relevant when it comes to the evaluation of signal callers in the NFL. To examine this contention, this paper explores the relationship between player salary, performance, and race at the quarterback position over the period 1995 to 2006. We find that blacks and whites play this position differently. Specifically, black quarterbacks are more likely to run with the football. This skill, though, is not compensated in the market. Consequently, there is evidence that blacks face an uncompensated entry barrier in this particular occupation.

New issues in attendance demand: the case of the English football league

This paper uses an attendance demand model with panel data on over 4,000 games to examine economic problems of fixture congestion in English Football League schedules. We find that televised midweek Champions League matches involving English Premier League clubs have substantial adverse impacts on lower division Football League gate attendance. This suggests that affected clubs may have a case for compensation from the Premier League for loss of gate revenue from this source. Scheduling of home games close to one another also has an adverse impact on attendance. Reorganisation of fixture schedules and/or redistribution of income would help offset adverse impacts on team revenues from midweek scheduling.

Does it pay to specialize? The story from the Gridiron

In the field of personnel economics, there are few opportunities to convincingly test for salary returns to specialization as against versatility or multi-tasking. This paper performs such a test by modeling returns to performance measures associated with two different skills practiced by running backs in the National Football League. We find pronounced gains to specialization with substantial predicted differences in returns for alternative skills. Moreover, these differences vary across the salary distribution. In the top half of the salary distribution, especially, model simulations show that specialists in either particular skill generate higher marginal returns than versatile players.

The relationship between betting and lottery play: a high frequency time-series analysis

The substitutability of different gambling products is an important concern for any jurisdiction contemplating deregulation of its gambling sector. We apply a novel daily time-series data set of daily turnover from one of Britain's leading bookmakers to analyse potential substitution between lottery play and bookmaker betting. We find some evidence that bettors do substitute away from horse race, dog race and numbers betting when the effective price of lottery tickets is unusually low, i.e. when there is a rollover or Superdraw. This substitution has a highly specific pattern of timing that varies by sector. Our results further suggest that bettors rationally engage in forward-looking substitution within their betting portfolios.