Investigation into the merits of infrared imaging in the investigation of tattoos postmortem

Infrared imaging has a history of use in the forensic examination of artwork and documents and is investigated here for its wider use in the detection of tattoos on the human body postmortem. Infrared photographic and reflectographic techniques were tested on 18 living individuals, displaying a total of 30 tattoos. It was observed that neither age, sex, age of the tattoo, nor, most significantly, skin color affected the ability to image the tattoos using infrared imaging techniques. Second, a piglet carcass was tattooed and the impact of the decomposition process on the visibility of the tattoos assessed. Changes were recorded for 17 days and decomposition included partial mummification and skin discoloration. Crucially, the discoloration was recorded as greatly affecting the image quality using conventional photography, but was insignificant to the infrared recording of these tattoos. It was concluded that infrared reflectography was beneficial in the investigation into tattoos postmortem.     

A comparison of forensic evidence recovery techniques for a windows mobile smart phone

Acquisition, decoding and presentation of information from mobile devices is complex and challenging. Device memory is usually integrated into the device, making isolation prior to recovery difficult. In addition, manufacturers have adopted a variety of file systems and formats complicating decoding and presentation.A variety of tools and methods have been developed (both commercially and in the open source community) to assist mobile forensics investigators. However, it is unclear to what extent these tools can present a complete view of the information held on a mobile device, or the extent the results produced by different tools are consistent.This paper investigates what information held on a Windows Mobile smart phone can be recovered using several different approaches to acquisition and decoding. The paper demonstrates that no one technique recovers all information of potential forensic interest from a Windows Mobile device; and that in some cases the information recovered is conflicting.     

The productivity of elected and appointed officials: the case of school superintendents

For over 40 years researchers have attempted to test the relative efficiency of governments run by elected versus appointed officials with conflicting results. The focus of prior research has been the expenditure levels of municipal and county governments. In this paper, we consider the achievement of students in public schools. Using data from Florida??s 67 school districts, we compare academic outcomes of students in districts run by elected and appointed superintendents. To overcome selection bias, we utilize both instrumental variable methods and panel data techniques. We find no consistent differences in the performance of elected and appointed superintendents.     

Money, organization and the state: The partial cartelization of party politics in Slovenia

A detailed analysis of party organization, party funding and voting behaviour in parliament in Slovenia indicates a partial cartelization of Slovene party politics. In line with the cartel thesis, parties in Slovenia are heavily dependent on the state for their finances and there is evidence that parties have used the resources of the state to limit competition. Nonetheless, there is much less evidence of cartelization in terms of party organization indicating more cartelization in the party system as a whole than within individual parties.