Drugs in prehistory: chemical analysis of ancient human hair

Concern about drug abuse in modern populations has led to the development of specific methods for identification of cocaine, opiates and cannabis in human hair. Drug use in prehistory can provide indirect evidence of interpopulational contact and social stratification. This paper reports drug evaluation in nineteen ancient hair samples from archaeological sites in northern Chile. Each sample was tested for the presence of traces of cocaine, opiates and cannabis, in order to establish a standard methodology for studies of drug use among prehistoric groups. Although results are negative, this absence of evidence could be due to two main causes: (1) the individuals evaluated did not use any drugs, which does not mean that other members of their cultural group did, or (2) the wide range of known drugs studied did not consider some group specific drugs, derived from local or imported plants, thus meaning that a greater drug range must be tested. In any case, our study confirms that drug testing in prehistoric samples is viable. However, in order to determine what kind of substances were used in prehistoric times new patterns that incorporate all drugs which are not part of the western pharmacopeia must be created. Finally, a methodology for the study of drug use among prehistoric groups using ancient hair samples is described.     

Public policies against criminal assets in mexico: challenges and opportunities from the north border states

Crime, Law and Social Change - Given its vast border with the United States, Mexico is a strategic trade and economic development region, which creates significant challenges in combating crime and...     

The Impact of Mixed‐member Districts on Legislators' Behavior: The Case of Bolivia

Many studies suggest that mixed‐member electoral systems produce different attitudes and behaviors among representatives. This article assesses how this type of electoral system shapes Bolivian legislators' perceptions of their roles as representatives, their district activities, and their relationships with their political parties. It examines these dimensions using elite survey data and interviews with legislators and their personal assistants. The results show that the electoral system does not produce a uniform impact. It shapes how legislators perceive their role as representatives and the nature of the relationship they build with their political parties, but it does not produce differences in the kinds of activities that both types of legislators carry out in their districts.     

An Objective Corruption Risk Index Using Public Procurement Data

In order to address the lack of reliable indicators of corruption, this article develops a composite indicator of high-level institutionalised corruption through a novel ‘Big Data’ approach. Using publicly available electronic public procurement records in Hungary, we identify “red flags” in the public procurement process and link them to restricted competition and recurrent contract award to the same company. We use this method to create a corruption indicator at contract level that can be aggregated to the level of individual organisations, sectors, regions and countries. Because electronic public procurement data is available in virtually all developed countries from about the mid-2000s, this method can generate a corruption index based on objective data that is consistent over time and across countries. We demonstrate the validity of the corruption risk index by showing that firms with higher corruption risk score had relatively higher profitability, higher ratio of contract value to initial estimated price, greater likelihood of politicians managing or owning them and greater likelihood of registration in tax havens, than firms with lower scores on the index. In the conclusion we discuss the uses of this data for academic research, investigative journalists, civil society groups and small and medium business.     

How management team composition affects academic spin-offs’ entrepreneurial orientation: the mediating role of conflict

This research has been designed with the purpose of analysing the influence of both the composition of academic spin-offs’ management teams and the potential conflict emerged within such teams on the degree of entrepreneurial orientation exhibited by academic spin-offs. To this end, we have used the upper echelon theory as theoretical background and have analysed the impact of the proportion of non-academic managers within management teams, the heterogeneity of such teams with respect to the age and main educational area of their managers, as well as the potential mediating role of the conflict emerged. Drawing on a database of 167 Spanish academic spin-offs, results show, on the one hand, that the presence of non-academic managers within management teams is a key factor in the academic spin-offs' exhibitions of higher levels of entrepreneurial orientation and, on the other hand, that conflict fully mediates the relationship between management teams' age heterogeneity and entrepreneurial orientation.     

Recent Evolution of Public Sector Structure in Latin America: Describing and Explaining Shifts in Autonomy Trends in Colombia and Venezuela

This article has two objectives. The first objective is to review and assess the recent evolution of agency design in Colombia and Venezuela. More specifically, we study the agencies' formal autonomy in these two countries since the year 1999 when Venezuela experienced a major change in government policy towards socialism. Thus, we attempt to explore how this policy change is reflected in the formal autonomy of agencies. Our second objective is to test if, despite the differences in policy choices the two countries have taken in the recent years, there are theoretical factors related to the agencies' design that can explain the level of formal autonomy of the agencies. The results show two main elements: first, even though the patterns of formal agency autonomy in Colombia and Venezuela differed before Venezuela's latter policy change, the differences between these two countries have increased since 2000. This indicates that each country's policy preferences may account for the differences. Second, for both countries, we found that, despite the differences, agency level factors such as the primary tasks that are performed by the agencies and the policy sector in which they are active have had an impact on their level of formal autonomy. However, the results indicate that these relationships do not follow the predictions that have been made based on the different theoretical perspectives. Copyright © 2016 John Wiley & Sons, Ltd.     

Might Makes Right: War-Related Payments in Bosnia and Herzegovina

ABSTRACT

This article explores the patterns of distribution of material reparations (compensation) for victims and veterans in post-1995 Bosnia and Herzegovina. Drawing on bottom-up approaches to reparative justice and critical peacebuilding, it explains the existing material reparation schemes in Bosnia as outcomes of the post-war transition and interests of the main transitional actors. It first explores the different approaches to war-related compensation for victim and veteran groups and then demonstrates that veterans have formed powerful pressure groups, drawing on extensive political and economic resources. Their organizations have been receiving socioeconomic support in exchange for electoral endorsement and public political support. As victims are fragmented ethno-nationally, by categories, and also lack capacities, their means to leverage the authorities for change are limited, even when matched with NGO and international support. This paper argues that unless material reparation is distributed in a transparent and consistent manner, it may create additional social cleavages and tensions.     

Modification of the Marmarou and Foda model of diffuse axonal injury (DAI) improves percentage survival of rats at 24 h and increases the amount of DAI identified

More than two decades ago, Marmarou published a valid model for producing diffuse axonal injury (DAI) in rats. Since then, both mild and severe injuries have been obtained by researchers using the original method and a weight of 450 g. However, the diffuse brain injuries produced in rats were only similar to those seen in humans when the rats sustained severe brain injuries. In these cases, rat mortality in the original article was around 50%, and the cause of death was prolonged apnea post-impact. Rat survival after impact is critical for studying the progression of DAI. In order to explain the cause of death in human victims with cranial trauma who do not show gross brain injury, testing for the presence of DAI is essential. Thus, in order to minimize local and cervical injuries to increase rat survival, attention should be paid to the following aspects: a wider head protector disc should be used, the head of the rat should be elevated at the time of impact, and the foam bed should be soft enough to allow the movement caused by acceleration. With our modified method, rat survival increased by 30% compared to the original model (80% versus 50%). Moreover, 85.7% of rats demonstrated DAI after 24 h of survival. With these modifications, injuries appear in the same locations as in humans; thus, the method is suitable for the study of traumatic DAI in humans.     

Comparative Assessment of a Novel Photo‐Anthropometric Landmark‐Positioning Approach for the Analysis of Facial Structures on Two‐Dimensional Images

Positioning landmarks in facial photo‐anthropometry (FPA) applications remains today a highly variable procedure, as traditional cephalometric definitions are used as guidelines. Herein, a novel landmark‐positioning approach, specifically adapted for FPA applications, is introduced and, in particular, assessed against the conventional cephalometric definitions for the analysis of 16 landmarks on ten frontal images by two groups of examiners (with and without professional knowledge of anatomy). Results showed that positioning reproducibility was significantly better using the novel method. Indeed, in contrast to the classic approach, very low landmark dispersions were observed for both groups of examiners, which were usually below the strictest clinical standards (i.e., 0.575 mm). Furthermore, the comparison between the two groups of examiners highlighted higher dispersion consistencies, which supported a higher robustness. Thus, the use of an adapted landmark‐positioning approach proved to be highly advantageous in FPA analysis and future work in this field should consider adopting similar methodologies.