Generalised estimates of diffusion rates for the oxygen blown steel process: An international comparison

The purpose of this study is to build on the results recently obtained by Poznanski (1990). First, the estimation technique is generalised by removing both the symmetric restrictions and the effects of autocorrelated errors that are present in simple logistic functions. Secondly, attention is drawn to the existence and consequences of multicollinearity when non linear techniques are applied to a general exponential. Thirdly, an attempt is made to quantify the importance of market structure and time lags in adoption as determinants of diffusion speed. Finally, a comparison between these generalised results and Poznanski's is made. The study concludes that, by generalising the estimation technique, some significant changes take place. Changes occur in the ordering and magnitude of diffusion speeds, especially amongst the developing and centrally planned economies. Changes also occur in the nature of the diffusion process, and in the importance attributed to market structure and diffusion lags in determining the rate of diffusion. It is also shown that, for some countries, multicollinearity imposes constraints on the type of generality that can be obtained.     

Predicting symmetry in female/male crime rates

This paper examines changes in female criminality. Data were obtained from 1943 through 1998 on six index crimes: murder, robbery, assault, burglary, auto theft, and larceny. Rape and arson are not included because rape is almost exclusively a male crime, while statistics for arson have not been consistent for the period studied. A review of the literature on female crime is presented. Percentage differences between males and females were obtained for specific crimes for each year. A regression line was computed for this difference by year. Each line is characterized by R², as a measure of confidence in future predictions and “b” levels to determine slope, and the expected year in which male and female crime will achieve equality if current trends continue. The authors also suggest using the year generated as an index on which to compare growth or decline of female crime.     

Yesterday's war; tomorrow's technology: peer commentary on ‘Ethical,legal, social and policy issues in the use of genomic technologies by the US military’

A recent article by Maxwell J. Mehlman and Tracy Yeheng Li, in the Journal of Law and the Biosciences, sought to examine the ethical, legal, social, and policy issues associated with the use of genetic screening and germ-line therapies (‘genomic technologies’) by the US Military. In this commentary, we will elaborate several related matters: the relationship between genetic and non-genetic screening methods, the history of selection processes and force strength, and the consequences and ethics of, as Mehlman and Li suggest, engineering enhanced soldiers. We contend, first, that the strengths of genomic testing as a method of determining enrollment in the armed forces has limited appeal, given the state of current selection methods in the US armed forces. Second, that the vagaries of genetic selection, much like other forms of selection that do not bear causally or reliably on soldier performance (such as race, gender, and sexuality), pose a systematic threat to force strength by limiting the (valuable) diversity of combat units. Third, that the idea of enhancing warfighters through germ-line interventions poses serious ethical issues in terms of the control and ownership of ‘enhancements’ when members separate from service.