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.     

ECONOMIC POLICY ISSUES ASSOCIATED WITH BEACH RENOURISHMENT

Coastal beaches are a source of considerable recreational activity, but are also eroding at a rapid rate. Since beach resources are common property, there is no organized market to determine economic benefits from recreational use. Through a willingness to pay equation for beach use, this article demonstrates how proposed beach renourishment policy can be evaluated within a benefit-cost analysis framework. Benefits are estimated as the incremental willingness to pay per day for a larger beach width which is translated into annualized benefits. Annualize cost of achieving maximum benefits are calculated from a cost function. Given the existing cost of beach renourishment, it was found that all beaches in Florida that are overcrowded (i.e., had less than 112 square feet per person/day) could be renourished at a benefit-cost ratio greater than unity. In Florida, beach renourishment policy for overcrowded beaches yields more economic benefits than costs. However, this technique does not lend itself to policy analyses of uncrowded beaches that are undergoing considerable erosion.     

Constitutionalizing Employment Relations: Sinzheimer, Kahn-Freund, and the Role of Labour Law

Hugo Sinzheimer and his one-time student Otto Kahn-Freund are widely regarded as the founding fathers of German and British labour law respectively. While, at first glance, the two scholars might appear to have advocated rather different approaches to the regulation of employment relations, a review of their work reveals that both argued, in essence, for the 'constitutionalization' of those relations. Both argued, in other words, for the removal from the economic sphere of the otherwise inequitable consequences of the functioning of private law, so that collectivized labour might participate with capital, on a parity basis, in the autonomous regulation of the economy.     

‘Austria First’ revisited: a diachronic cross-sectional analysis of the gender and body politics of the extreme right

ABSTRACT

In this paper, Rheindorf and Wodak provide a discourse-historical analysis of extreme-right cultural politics in Austria, ranging from the blatant racism in the speeches of Vienna’s former Deputy Mayor Johann Gudenus (now MP in the Austrian parliament) to the construction of an idealized national body in the election campaigns of the Freiheitliche Partei Österreichs (FPÖ), its programmatic agenda in handbooks and pamphlets, and the performances of far-right pop singer Andreas Gabalier. Rheindorf and Wodak argue that such cultural politics use a wide spectrum of discursive strategies both inside and outside established party politics and that the accompanying production of an ideal extreme-right subject is informed by nativist ideology. The cross-sectional analysis demonstrates that the cultural politics of the Austrian extreme right ranges from appropriated national symbols to coded National Socialist iconography. These politics pervasively construct a gendered and racialized national body, policed by a ‘strict father’ and nurtured by a ‘self-sacrificing mother’, vis-à-vis an apocalyptic threat scenario identified with migration, intellectual and political elites, cosmopolitanism and progressive gender politics.     

When Do Challengers Succeed? Nongovernmental Actors,Administrative Agencies,and Legal Change: Shifting Rules for Oregon's Private Forests

Regulatory regimes are notoriously resistant to change, so when less powerful actors manage to reshape long‐established rules and gain increased access to a natural resource the interesting question is why? This article investigates relations between different claimant groups and the state in the reshaping of the regulations governing Oregon's private forestlands, how this process was mediated by broader political opportunities and constraints, and the conditions that supported a shift in the legal regime that benefited less advantaged interests. The intent is to deepen our understanding of the circumstances under which well‐established rules of governance are altered. Analysis points to each of the following variables as significant for successful reform: (1) active challengers and their success in reframing issues to support their goals, (2) new political opportunities facilitating wider participation in the rulemaking process, and (3) concurrence between local and national aspirations supporting reform. While each condition is noteworthy, it is insufficient on its own. Rather, my study comparing two contested administrative rules suggests that a clear alignment of all three variables provides the strongest impetus for legislative and administrative rule changes at the state level benefiting less advantaged interests.