Comparison of the variables affecting the recovery of DNA from common drinking containers

As the boundaries of forensic DNA profiling continue to expand, less obvious sources of biological evidence are being collected at crime scenes for DNA profiling. One example is the recovery of biological evidence from common drink containers, such as bottles and cans, which have been found at crime scenes. There are many variables that may have an impact on recovering a DNA profile from such exhibits. In this research, the effects of person to person variation, time, type of drink (including alcoholic and non-alcoholic beverages), and type of drink container, were assessed for their impact on the major analytical outcomes of the DNA process. The results show that the alpha-amylase activity varies from individual to individual and is reduced in the presence of some alcoholic drinks. A reasonable DNA yield was obtained from all samples, however, the concentrations exhibited significant person to person variation. The type of drink container influenced the DNA yield with cans giving a higher yield than bottles of the same drink type. To a reduced extent the presence or absence of alcohol affected the overall DNA yield and when partial or failed DNA profiles were produced they were more likely to be associated with alcoholic drinks than non-alcoholic drinks.     

Explaining variation in the competitiveness of U.S. Senate elections, 1922–2004

We develop and test predictions about the factors determining the competitiveness of elections to the U.S. Senate. To do so, we deliberately abstract away from candidate-specific conditions that have often been used to study political competitiveness in order to focus on basic structural features of the electoral landscape. In our framework, party-specific constraints on the ideological positioning of local candidates, linked to the national party organization and its contributors, interact with the heterogeneity of state electorates to determine the number of highly competitive Senate contests. Three hypotheses emerge from this model: (1) the greater the diversity of a party’s national legislative delegation, the more highly competitive Senate elections we will observe; (2) states in which the ideological heterogeneity of the electorate is relatively high will exhibit a greater number of highly competitive elections; and (3) highly competitive Senate contests will be more common in states with closed primaries than in states with open primaries. We provide strong evidence in support of the first two hypotheses and some evidence in support of the third.     

South Africa in a comparative study of industrialization

The peculiarities of South African society, where class, ethnic, linguistic and national cleavages overlap, tend to obscure the process which have led to industrialization. This is unfortunate because a study of South African social structures may shed light on the wider problems of development. An attempt is made in the article to compare political and economic developments in South Africa with similar developments in Tsarist Russia, Imperial Germany and the American South. It is suggested, for example, that the German ‘marriage of iron and rye’ has a counterpart in the relationship between maize and gold in South Africa and that similar political consequences follow. The organization of the South African mining compound is considered, in its formulating effect upon the peculiar process of urbanization in South Africa. This particular form of urbanization has resulted in the creation of a very considerable surplus for investment, the implications of which are discussed.     

The Purity Thesis

Hans Kelsen’s purity thesis is the basic methodological principle of the Pure Theory of Law. Indeed, it is no exaggeration to say that virtually everything that is peculiar to Kelsen’s legal theory stems from the purity thesis. This includes Kelsen’s normativism or non‐naturalism and his polemic against various dualisms in legal science. I set out Kelsen’s position on these issues after looking at the nomenclature of purity in his writings as well as the philosophical and contextual sources of purity as he understands them.     

Political Influence,Economic Interests and Endogenous Tax Structure in a Computable Equilibrium Framework: With Application to the United States, 1973 and 1983

We consider the properties of a computable equilibrium model ofa competitive political economy in which the economic interestsof groups of voters and their effective influence on equilibriumpolicy outcomes can be explicitely distinguished and computed.The model incorporates an amended version of the GEMTAP taxmodel, calibrated to data for the United States for 1973 and1983. Emphasis is placed on how the aggregation of GEMTAPhouseholds into homogeneous groups affects the numericalrepresentation of interests and influence for representativemembers of each group.     

Analyzing the Contracting-Out of Government Services: Relevant Cost-Benefit Considerations

This article reviews various approaches to analyzing the contracting-out decision and distills a set of cost/benefit considerations which each analysis must address in order to properly ascertain whether there is any advantage to contracting out as compared to performing the work in-house. The author describes an approach to analyzing the contracting-out decision that begins with an unambiguous, comprehensive statement of service goals to facilitate the measurement of outcomes and is followed by an examination of the other considerations on the cost side of the equation which are basic to the proper measurement of all direct costs, indirect costs, and social costs.