DNA recovery after sequential processing of latent fingerprints on copy paper

Forensic examiners must determine whether both latent fingerprint development and DNA profiling can be performed on the same area of an evidence item and, if only one is possible, which examination offers the best chance for identification. Latent fingerprints can be enhanced by targeting different components of fingerprint residues with sequential chemical treatments. This study investigated the effects of single-reagent and sequential latent fingerprint development processes on downstream DNA analysis to determine the point at which latent fingerprint development should be stopped to allow for DNA recovery. Latent fingerprints deposited on copy paper by one donor were developed using three sequential processes: 1,8-diazafluoren-9-one (DFO) → ninhydrin → physical developer (PD); 1,2-indanedione-zinc (IND-Zn) → ninhydrin → PD; and IND-Zn → ninhydrin → Oil Red O (ORO) → PD. Samples were examined after the addition of each chemical treatment. DNA was collected with cotton swabs, extracted, quantified, and amplified. DNA yields, peak heights, number of alleles obtained, and percentage of DNA profiles eligible for CODIS upload were examined. DNA profiles were obtained with varying degrees of success, depending on the number and type of treatments used for latent fingerprint development. The treatments that were found to be the least harmful to downstream DNA analysis were IND-Zn and IND-Zn/laser, and the most detrimental treatments were DFO, DFO/laser, and PD. In general, as the number of treatments increase, the opportunities for DNA loss or damage also increase, and it is preferable to use fewer treatments when developing latent fingerprints prior to downstream DNA processing.     

Unprincipled Principals: Co-opted Bureaucrats and Corruption in Ghana

In theory, granting politicians tools to oversee bureaucrats can reduce administrative malfeasance. In contrast, I argue that the political control of bureaucrats can increase corruption when politicians need money to fund election campaigns and face limited institutional constraints. In such contexts, politicians can leverage their discretionary powers to incentivize bureaucrats to extract rents from the state on politicians' behalf. Using data from an original survey of bureaucrats (N = 864) across 80 randomly sampled local governments in Ghana, I show that bureaucrats are more likely to facilitate politicians' corrupt behavior when politicians are perceived to be empowered with higher levels of discretionary control. Using qualitative data and a list experiment to demonstrate the mechanism, I show that politicians enact corruption by threatening to transfer noncompliant officers. My findings provide new evidence on the sources of public administrative deficiencies in developing countries and qualify the presumption that greater political oversight improves governance.     

Debt Restructuring and Notions of Fairness

This article examines concern for fairness in the way in which loss is distributed when a company or financial institution facing financial difficulties is restructured. It shows how this concern is often grounded in loose notions of fairness, or generalisations from one situation to another, rather than in detailed analysis. Adopting an interdisciplinary approach, it builds an analytical frame for the fairness debate in debt restructuring. It shows why rigour is important in identifying fairness concerns, in weighing them against other considerations, and in applying concerns which arise in one scenario to another, and illustrates the types of policy mistake or policy incoherence which can arise if this is not done.     

Pay‐for‐Success Development in the United States: Feasible or Failing to Launch?

Social impact bonds, known as pay‐for‐success (PFS) initiatives in the United States, have attracted attention as a novel strategy for financing and providing preventive services to the most vulnerable populations. This article provides an exploratory qualitative analysis of the Preschool PFS Feasibility Pilot grant applications and projects initiated by the U.S. Department of Education to encourage state and local exploration of PFS for implementing high‐quality preschool programs. Drawing on the public administration evidence base that informs PFS design, the authors examine the feasibility pilots’ features and investigate why grant applicants saw PFS as a promising strategy for achieving their preschool program goals. The challenges encountered, lessons learned, and perceived viability of fully executed PFS preschool programs are also discussed. Findings show that few projects are advancing toward formal PFS arrangements, with many struggling to overcome constrained capacities, structural and political barriers, and inherent incentives to minimize risk and loss.     

An investigation into the use of a portable cyanoacrylate fuming system (SUPERfume®) and aluminum powder for the development of latent fingermarks

Abstract: Few techniques offer “in situ” methods of friction ridge skin mark development. “In situ” development reduces mark transportation, degradation, and often cost. The effectiveness of cyanoacrylate fuming using the SUPERfume^® and dusting with aluminum powder for latent fingermark development on several nonporous surfaces, stored in various temperature environments for time periods up to 52 weeks, was investigated. Five thousand and four hundred latent fingermarks were deposited under controlled conditions and graded. The results suggested that cyanoacrylate fuming (SUPERfume^®, Foster and Freeman, U.K.) was more effective at developing latent fingermarks on textured and smooth plastic surfaces and for marks stored in temperatures of 37°C, whereas aluminum powder was more effective on glass, enameled metal paint, and varnished wood, and for storage temperatures below 20°C. There were no significant benefits to using either technique for marks older than 24 h, but it was possible to develop fingermarks following 52 weeks of storage using both techniques.