Fluorescence of 1,2‐Indanedione with Amino Acids Present in the Fingerprint Residue: Application in Gender Determination

1,2‐indanedione is used for latent fingerprint visualization on porous surfaces. In this paper, fluorescence spectra of 1,2‐indanedione after reacting with 21 individual amino acids present in latent fingerprints residue were measured in water‐methanol solutions. The fluorescence intensity depends on the amino acid used, while the fluorescence peak does not change much. The concentration of amino acids in fingerprint residue in females is almost the double of their concentration in males. This property combined with fluorescence of 1,2‐indanedione‐amino acids compounds is used for gender determination, by comparing the fluorescence intensity peaks in the same experimental conditions. In this preliminary study, the fluorescence signal from the samples representing females was almost two times the signal for samples representing males. In addition to the reduction by almost 50% of the number of suspects in a criminal research case, these results could be helpful in gaining some knowledge about the papillary residue composition.     

Individual Conceptual Structure and Legal Experts’ Efficient Communication

The article investigates characteristics of legal concepts as found in academic articles, focusing upon the knowledge base of legal experts. It is a cognitively oriented study of one of the semiotic basics of communication for academic legal purposes. The purpose is to study the structure of knowledge elements connected to the concept of “Criminal liability of corporations” from US law in and across individual experts in order to look for individual differences and similarities. The central concern is to investigate the conditions for the observable efficiency of semiosis in academic discourse. In a first basic section I discuss aspects relevant for a cognitively oriented study of academic discourse. The empirical part of the article consists of an analysis of text passages from two articles in American law journals. The results of the study support the assumption that high efficiency and precision of semiosis is due rather to the use of specific cognitive processing skills than to total identity of cognitive structures across individual experts.

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Rethinking Police Violence in Brazil: Unmasking the Public Secret of Race

In Brazilian cities, perhaps the most disturbing criminal activity is the violence perpetrated by police officers themselves. This article is an invitation and a provocation to reconsider social scientific thinking about police violence in Brazil. Illustrated by a court decision from a Northeastern city, in which a black man won a case against the state for being falsely arrested and abused by a black police officer on the grounds of racism, this article investigates three paradoxes: Brazilians fear both crime and the police; black police beat black civilians; and government officials disavow responsibility by stigmatizing the police on racial grounds. It then proposes an alternative reading of these paradoxes that opens the possibility for rethinking police reform and argues that democratization in Brazil is deeply intertwined with the future of its darkest‐skinned citizens.     

How Similar are Close Relatives? Comparing Swedish–Swedish and Finnish–Swedish Statutes

International Journal for the Semiotics of Law - Revue internationale de Sémiotique juridique -