Powdered Activated Carbon: An Alternative Approach to Genomic DNA Purification

Forensic evidence samples are routinely found as stains on various substrates, which may contain substances known to inhibit polymerase chain reaction (PCR). The goal of this study was to evaluate post‐Chelex^®100 purification using powdered activated carbon (PAC). Mock crime scene DNA extracts were analyzed using quantitative PCR and short tandem repeat (STR) profiling to test the DNA recovery and inhibitor removal using PAC with those of the Amicon^®Ultra 100K. For extracted bloodstains on soil and wood substrates, PAC and Amicon^®Ultra 100K generated similar DNA yield and quality. Moreover, the two methods significantly decreased the concentration of humic substances and tannins compared to nonpurified extracts (p < 0.001). In instances where extracts contained indigo dye (bloodstains on denim), Amicon^®Ultra 100K performed better than PAC due to improved amplifiability. Efficient adsorption of humic substances and tannins, which are common inhibitors, indicates PAC's potential application in the purification of high‐template DNA extracts.     

From ideology to pragmatism

He is editor-in-chief of Praxis International. His books include In Search of Democracy in Socialism; Between Ideals and Reality;and, forthcoming From Marxism and Bolshevism to Gorbachev’s Perestroika.     

Jurors'Evaluations of Expert Testimony: Judging the Messenger and the Message

Jurors are laypersons with no specific expert knowledge, yet they are routinely placed in situations in which they need to critically evaluate complex expert testimony. This paper examines jurors'reactions to experts who testify in civil trials and the factors jurors identify as important to expert credibility. Based on in-depth qualitative analyses of interviews with 55 jurors in 7 civil trials, we develop a comprehensive model of the key factors jurors incorporate into the process of evaluating expert witnesses and their testimony. Contrary to the frequent criticism that jurors primarily evaluate expert evidence in terms of its subjective characteristics, the results of our study indicate that jurors consider both the messenger and the message in the course of evaluating the expert's credibility.     

Testing the Theoretical Relationship Between the Role of the Society at Large and the Willingness to Adhere to the Police Code of Silence

Asian Journal of Criminology - This study examines the relationship between the role of the society at large and the code of silence in China and South Korea. Although both countries embrace...     

Of veto players and entity-voting: institutional gridlock in the Bosnian reform process

Entity-voting in the Bosnian Parliamentary Assembly is a veto mechanism in Bosnia's consociational institutional setting and an important reason for the country's orientation towards the political status quo. An empirical analysis of the number and nature of adopted and rejected draft laws during the legislative period 2006–2010, embedded in George Tsebelis's veto player approach, leads to the conclusion that the veto players in the parliament – either delegates from Republika Srpska or delegates from the Federation of Bosnia and Herzegovina – have pushed the consociational system of checks and balances to its extremes. Entity-voting enables the veto players to “hijack” the parliament for their exclusionary ethnic interests and discourages cooperation and compromise between the veto players. Significant legislation, which in the present article is defined as legislation relevant for the European Partnership, faces severe obstacles to getting passed. In the light of these findings, the article discusses three policy implications: institutional redesign, a change of the actors, and an active role of the European Union for providing the actors with a realistically achievable goal which they equally share. This should reset the current calculus of self-interest and encourage cooperation between the veto players.     

Tending the “oasis of socialism.” Transnational political mobilization of Yugoslav economic emigrants in the FR Germany in the late 1960s and 1970s

The article examines the development of the Yugoslav state's policy of transnational political engagement of Yugoslav citizens on temporary work in the FR Germany during the late 1960s and 1970s. This politicization of labor migrations was shaped by the interplay of the internal turmoil in the Yugoslav federation and the conditions peculiar to West Germany of the time. The change of the state's perception of external migrations is being examined through the extension of the agitation apparatus of the League of Communists of Yugoslavia onto the territory of the FR Germany and the mobilization of economic emigrants against the “hostile” political emigrants residing in that country. The main goal of these measures was to maintain the emigrants' transnational links to their homeland and ensure that their political standing was kept in line with the official Yugoslav ideological tenets until the time of the prospective return migration cycle. The extraterritorial character of these measures, coupled with the specific position of Yugoslavia within the Cold War diplomacy, led to a peculiar ideological interplay and shifting web of cooperation and confrontation between various actors.