Comparative radiographic study of human and animal long bone patterns

The objective of this study was to test the hypothesis that certain radiographic features can be found to distinguish between human and animal long bone fragments, and therefore would be useful as an adjunct in forensic science identification. Using proposed radiographic criteria, 13 archeologists and 12 dentists were asked to identify 20 radiographic samples as representing human or animal bone. Results showed that archeologists correctly identified 86.8% of the samples, and dentists correctly identified 81.9%. Based on the results of this study, it was concluded that radiographic interpretation of long bone fragments may be a useful aid in a forensic science investigation of human and animal remains.     

Political extremism in the presence of a free rider problem

This paper provides an explanation for the emergence of political extremism in an environment in which a change in “ré gime” requires an investment that benefits more than one player. We show that in order to mitigate the effects of free riding, players may choose extreme positions. Further, we show that as the free rider problem becomes more severe, both parties move to more extreme positions in the same direction.     

Overcoming ethnic inequalities: Lessons from Malaysia

Beginning in 1971, Malaysia took unprecedented steps to improve the welfare of ethnic Malays vis-à-vis the country's large Chinese minority. The programs included quotas in education, employment, and ownership, as well as a variety of subsidies, credit schemes, and political measures. The circumstances were favorable: The disadvantaged ethnic group was a majority and held the political reins, and soaring export prices generated much new growth to redistribute. But enormous efforts at “affirmative action” led to only marginal changes in the interethnic distribution of income. Malaysia's new policies reduced racial inequalities less than one might have hoped, but they also had fewer bad effects on economic efficiency and political stability than one might have feared.     

Unusual contact marks: connecting the hubcap to the wheel of the car

A case of homicide and attempted homicide is described. The comparison of tire-marks linked the suspect's vehicle to the scene of crime only with low certainty. However, the comparison of the pressure mark on the hubcap found at the scene, with the balance weight on one of the wheels of the suspect's car, connected the suspect to the scene of crime with high certainty.     

A Fast, Easy, and Efficient Estimator for Multiparty Electoral Data

Katz and King have previously developed a model for predictingor explaining aggregate electoral results in multiparty democracies.Their model is, in principle, analogous to what least-squaresregression provides American political researchers in that two-partysystem. Katz and King applied their model to three-party electionsin England and revealed a variety of new features of incumbencyadvantage and sources of party support. Although the mathematicsof their statistical model covers any number of political parties,it is computationally demanding, and hence slow and numericallyimprecise, with more than three parties. In this paper we producean approximate method that works in practice with many partieswithout making too many theoretical compromises. Our approachis to treat the problem as one of missing data. This allowsus to use a modification of the fast EMis algorithm of King,Honaker, Joseph, and Scheve and to provide easy-to-use software,while retaining the attractive features of the Katz and Kingmodel, such as the t distribution and explicit models for uncontestedseats.