Alcohol dependence and criminal behavior: preliminary results of an association study of environmental and genetic factors in an italian male population

The aim of this study is to propose an innovative approach evaluating the connection between alcohol use disorders and criminal behavior. The research, structured as a case–control study, was based on the analysis of environmental (social variables) and genetic factors (single nucleotide polymorphisms of glutamic acid decarboxylase) in a population (N = 173) of Italian alcohol‐dependent men. Group 1 (N = 47, convicted subjects) was compared with Group 2 (N = 126, no previous criminal conduct). Grade repetition, work problems, and drug problems were statistically associated with criminal behavior. Having daily family meals together and having children were inversely related to convictions. The genotype distribution of the two groups was similar. The association between environmental factors and antisocial behavior confirms previous findings in the literature. The lack of genetic association does not exclude the role of the gamma‐aminobutyric acid (GABA) system in determining antisocial behavior; further studies with larger samples are needed, together with investigation of other components of the GABA pathway.     

GABA Receptors,Alcohol Dependence and Criminal Behavior

The aim of this study was to analyze the connection between alcohol dependence and criminal behavior by an integrated genetic–environmental approach. The research, structured as a case–control study, examined 186 alcohol‐dependent males; group 1 (N = 47 convicted subjects) was compared with group 2 (N = 139 no previous criminal records). Genetic results were innovative, highlighting differences in genotype distribution (p = 0.0067) in group 1 for single‐nucleotide polymorphism rs 3780428, located in the intronic region of subunit 2 of the GABA B receptor gene (GABBR2). Some environmental factors (e.g., grade repetition) were associated with criminal behavior; others (e.g., attendance at Alcoholics Anonymous) were inversely related to convictions. The concomitant presence of the genetic and environmental factors found to be associated with the condition of alcohol‐dependent inmate showed a 4‐fold increase in the risk of antisocial behavior. The results need to be replicated on a larger population to develop new preventive and therapeutic proposals.     

Objective Evaluation of Subclass Characteristics on Breech Face Marks

Subclass characteristics can be found on the breech face marks left on spent cartridge cases. Even if they are assumed to be rare and their reported number is small, they can potentially lead to false associations. Subclass characteristics have been studied empirically allowing examiners to recognize them and to understand in which conditions they are produced. Until now, however, their influence on the identification process has not been studied from a probabilistic point of view. In this study, we aim at measuring the effect of these features on the strength of association derived from examinations involving subclass characteristics. The study takes advantage of a 3D automatic comparison system allowing the calculation of likelihood ratios (LRs). The similarities between cartridge case specimens fired by thirteen S&W .40S&W Sigma pistols are quantified, and their respective LRs are computed. The results show that the influence of subclass characteristics on the LRs is limited, even when these features are prevalent among the potential sources considered in a case. We show that the proportion of firearms sharing subclass characteristics should be larger than 40% of the pool of potential firearms for the effect to be significant.     

The systemic error in the vertical component of handgun bullet trajectory reconstructions

Establishing the path or trajectory of a fired bullet is an often recurring part of shooting incident reconstruction. The current study describes how gravitational pull causes a systemic error on the vertical component of a trajectory reconstruction. Bullet drop, drop angle, and vertical offset are explained and calculated for 10 different handgun/ammunition combinations over a range of distances up to 100 m. The presented results are intended to provide forensic firearm examiners with a reference frame for the magnitude of error introduced on handgun bullet trajectory reconstructions over distance. Threshold values of 20 and 30 m are proposed as conservative distances up to where bullet trajectories can be modeled as straight lines with subsonic/transonic handgun bullets and with supersonic handgun bullets respectively. Both the bullet drop and vertical offset will be below 5 cm at these distances for those categories. The drop angle will be below 0.3°.     

On the margins of soy farms: traditional populations and selective environmental policies in the Brazilian Cerrado

In the Cerrado, the expansion of soybean cultivation since the 1990s has coincided with the strengthening of environmental regulations. We analyze how the two main environmental policies – Protected Areas and the Forest Code – have played out at the ground level in western Bahia state. These policies in Cerrado have not been designed to curb the expansion of this agricultural frontier. These norms have, on the contrary, accommodated this expansion because the way environmental managers selectively choose environmental problems and publicize them through specific information systems depreciates traditional fire-dependent production systems. These ‘politics of selection’ are likely to increase competition for resources in the margins of soybean agriculture, which is where traditional populations have now become confined.     

Agribusiness,Legislative Elections and Party Fragmentation in Brazil

The article explores the impact of agribusiness on the politics of legislative elections in Brazil. The central argument is that social contexts dominated by agribusiness tend to amplify the number of right-wing micro-parties, due firstly to the economic interests prevalent in such regions and secondly given the ‘catch all’ nature of Brazil's traditional right and centre-right political parties. By showing how agribusiness favours the proliferation of small parties, we may also reveal one of the main reasons behind the ‘hyperfragmentation’ of Brazil's party system.     

brics in the Contemporary World: changing identities,converging interests

Abstract

This paper aims to address the reasons why the acronym brics is moving from being an easy marker to guide foreign investors interested in emerging markets to denoting an important political group of countries determined to promote major changes in international relations. Theoretically the paper draws on social constructivism to demonstrate that the changing identities of brics (Brazil, Russia, India, China and South Africa) can be treated as the main cause of the convergence of their interests in the international arena. Through a detailed analysis of these countries’ statements at the opening sessions of the UN General Assembly from 1991 to 2011, their social claims about themselves are retraced and the way they have judged the international sphere in which they engage is captured, in order to demonstrate the changing character of their identities. These new identities, it is argued, created the opportunity for converging interests, which explains the emerging political structure of brics . The paper concludes that, after four major summits and a significant number of wide-ranging low-level meetings, brics might be considered one of the major long-lasting forces shaping the new architecture of international relations in the 21st century.     

The selection of committee leadership in the Brazilian chamber of deputies

This article contributes to the study of legislative organisation by contrasting the process of committee chair selection in two distinct institutional environments. The goal is to verify how party loyalty affects the distribution of committee chairmanship in the Brazilian Chamber of Deputies, focusing on two distinct historical periods. The main hypotheses are tested using a data set that contains information about federal deputies' career characteristics, both inside and outside the Chamber, measured on an annual basis, in two distinct democratic periods – 1946 to 1964 and 1989 to 1998. The article's main conclusions are: first, in a situation where parties are oriented by a factional logic and where power distribution between party leaders and committee chairs is more equal, party loyalty is a crucial factor in the allocation of committee chairmanships. Second, in a broader perspective, the interaction between committees and parties cannot only be explained by incentives emanating from the electoral connection, for it also suffers from the influence of executive–legislative relations.     

Automatic Comparison and Evaluation of Impressions Left by a Firearm on Fired Cartridge Cases

Recent years have been characterized by a series of publications in the field of firearms investigation questioning the reliability and objectivity of such examination. This research investigates new solutions to decrease the subjective component affecting the evaluation that follows the comparison of impressions left by a firearm on the surface of spent cartridge cases. An automatic comparison system based on 3D measurements has been developed and coupled to a bivariate evaluative model allowing assigning likelihood ratios. Based on a dataset of 79 pistols (all SIG Sauer 9 mm Luger caliber), the system shows a very high discriminating power and the LRs that it provides are very indicative of the true state under both the prosecution and the defense propositions. For example, likelihood ratios exceeding a billion are predominantly obtained when impressions originating from the same source are compared. The system is also characterized by relatively low rates (≤1%) of misleading evidence depending on the firearm considered.