The quantification of fingerprint quality using a relative contrast index

Research into fingermark enhancement techniques has traditionally used visual comparisons and qualitative methods to assess their effectiveness based on the quality of the developed fingermark. However, with increasing research into the optimisation of these techniques the need for a quantitative evaluative method has arisen. Parameters for acceptable fingerprint quality are not well defined and generally encompass clear, sharp edges and high levels of contrast between the fingermark ridges and background material. Using these current parameters, a conclusive measurement of fingerprint quality and thus the effectiveness of development techniques cannot be achieved.This study presents a model through which an aspect of fingerprint quality can be objectively and impartially measured based on a relative contrast index, constructed through measuring the reflective intensity of the fingermark ridges against the background material. Using a fibre-optic spectrophotometer attached to a microscope with axial illumination, the intensity counts of the ridge detail and background material were measured and a logarithmic contrast index constructed. The microscope and spectrophotometer parameters were experimentally tested using a standard colour resolution chart with known reflective properties. The protocol was successfully applied to four sample groups: black inked fingerprints on white paper; latent fingermarks on white paper developed separately with ninhydrin and physical developer; and fingermarks in blood deposited on white tiles and enhanced with amido black. The contrast indices obtained quantitatively reflect the level of contrast and provide an indication of fingerprint quality through a numerical representation rather than previous qualitative methods. It has been suggested that the proposed method of fingerprint quantification may be viable for application in the forensic research arena as it allows the definitive measurement of contrast to aid the evaluation of fingermark detection and enhancement techniques.     

ADHD among incarcerated youth: An investigation on the congruency with ADHD prevalence and correlates among the general population

The limited literature on the topic speculates that the rate of ADHD would be higher among incarcerated youth than found in the general population. However, to our knowledge no such published figures exist for juveniles in the United States. This study investigates the likelihood of ADHD diagnosis among 453 incarcerated youth and compares and contrasts a variety of demographic, social, educational, psychological, and criminal characteristics to the general literature on ADHD. Both similarities and differences are reported. This project was supported by Grant #99-RT-VX-K020 awarded by the National Institute of Justice. Points of view in this document are those of the author and do not necessarily represent the official position or policies of the U.S. Department of Justice. An early version of the paper was presented at the annual meeting of the Academy of Criminal Justice Science in Chicago, Illinois.     

Symposium on Implementing Public Policy: Learning from Theory and Practice

The initiative for this symposium issue arose out of a series of five ESRC seminars called 'Implementing Public Policy: Learning from Each Other'. The aim of the seminars was to revitalize interest amongst public policy researchers about implementation studies, to advance the development of ideas about public policy implementation and to assess the relevance of academic models of public policy implementation to those who deliver public services.     

Gender mainstreaming and the framing of women's rights in Europe: The contribution of the Council of Europe

Drawing on published materials from the Committee of Ministers, Assembly and expert working groups of the Council of Europe, this paper investigates the distinctive contribution made to the framing of women's rights over the last two decades by this regional organisation, which recent studies of the `Europeanisation' of public policies have largely neglected. Elements of congruence are identified between the major mobilising themes of second wave feminism and the Council's emphasis on protecting individual rights, and its sensitivity to the incompleteness and shortcomings of `actually existing' democratic institutions and practices. The relative openness of its agenda-setting processes is also underlined. The Council's flag ship policies for women are shown to have centred since the mid-1980s on a `politics of presence' frame and the (contested) concept of `parity democracy', and the tensions between these and the more recent turn to gender mainstreaming are explored. But the paper also points to the Council's role in diffusing into the E.U. governance arena women's claims to equal participation and presence in the policy process, and notes recent French and U.K. legislation as testifying to the continuing salience of these claims at the national level.     

A Model of Learned Implementation

The majority of the literature concerning the implementation of public policy assumes that public managers can carry out new policy initiatives regardless of the behavioural, cognitive or technical demands that the introduction of such policies may make upon them. There has been a tendency to assume that managers actually have the detailed technical knowledge by which to enact such new policies. The paper proposes that in effect, public managers have to learn a range of often new and detailed techniques in order to implement what are often ambiguous policy directives. Drawing on data gathered from the introduction of capital investment appraisal in the British National Health Service, a model of Learned Implementation is presented that describes one way in which public managers can learn to enact new policy initiatives. Using a mix of six organizational processes and variables, the model demonstrates how learning occurs and is used to solve the problems that are inherent in the introduction of new policy initiatives. The model further describes how the managers routinize these solutions into job tasks and procedures and hence a policy initiative is operationalized. The paper concludes with a discussion about the difficulties of predicting the operational consequences of new policy initiatives and raises questions about knowledge, ability and capability in the implementation of public policy.     

Review Symposium: Interdisciplinary Readings of Ari Z. Bryen's Violence in Roman Egypt: A Study in Legal Interpretation—Introduction

Bryen, Ari Z. 2013 . Violence in Roman Egypt: A Study in Legal Interpretation . Philadelphia, PA: University of Pennsylvania Press. Pp. 376. $75.00 cloth; $75.00 eBook.     

Zimbabwe black population data on the six short tandem repeat loci – CSF1PO, TPOX, THO1, D3S1358, VWA and FGA

Allele frequencies for six tetrameric short tandem repeat (STR) loci CSF1PO, TPOX, THO1, D3S1358, VWA, and FGA were determined in a Black African sample population from Zimbabwe. All loci are highly polymorphic and meet Hardy-Weinberg expectations. An inter-class correlation test analysis detected only one departure from independence out of 15 pair-wise comparisons of the six loci (i.e., CSF1PO/VWA loci, P=0.026). The allele frequency data at four of the six STR loci in the Black African sample population are similar to African American data.     

Neighborhood Effects and Compensation for Property Value Diminution

This paper analyzes the legal issues surrounding defendants' liability for property value diminution caused by stigma from environmental contamination. The courts, law review articles, and public policy analyses are in disagreement over how to handle stigma damages. This paper argues that a reasonable risk of contamination is not required for a nuisance claim if community effects, which were caused by the contamination, are present. The authors then turn to issues regarding the level of damages and propose a methodology for measuring compensation that is based on a guaranteed sales price. This methodology is applied to the RSR smelter in Dallas, Texas.