Artifacts Caused by Leaf-Cutting Ants of the Genus Atta (Hymenoptera: Formicidae): Postmortem Bite Injuries and the Tearing of Clothes

Ants are one of the first insects to find an exposed cadaver and can be present during all stages of decomposition. Although these organisms are not commonly used in postmortem interval estimates, they are to be taken into account on criminal investigations involving human corpses, since they can leave bite marks that can be mistaken for antemortem or perimortem injuries, which could be misleading when ascertaining the occurrence of abuse or physical altercation during a crime. A few studies report the action of ants on human cadavers and even though leaf-cutting ants of the genus Atta are frequently encountered in succession studies that use animal carcasses, there are no records of these fungus-growing species on human corpses. Atta is a genus restricted to the New World, ranging from northern Argentina to southern United States and acts as one of the most conspicuous neotropical herbivores. In this study, we report three cases of violent death that illustrate the impact of ants, especially those of the genus Atta, in a forensic setting. We compare the patterns displayed by postmortem bite injuries caused by leaf-cutter ants and other common species with less robust mandibles. We also present the capability of Atta ants to create artifacts by cutting victim’s clothes in a crime scene, contributing to the knowledge of ant-mediated confounding factors in crime scene investigation.     

Evaluation of the Simultaneous Analysis of Organic and Inorganic Gunshot Residues Within a Large Population Data Set Using Electrochemical Sensors*,†

The increasing demand for rapid methods to identify both inorganic and organic gunshot residues (IGSR and OGSR) makes electrochemical methods, an attractive screening tool to modernize current practice. Our research group has previously demonstrated that electrochemical screening of GSR samples delivers a simple, inexpensive, and sensitive analytical solution that is capable of detecting IGSR and OGSR in less than 10 min per sample. In this study, we expand our previous work by increasing the number of GSR markers and applying machine learning classifiers to the interpretation of a larger population data set. Utilizing bare screen-printed carbon electrodes, the detection and resolution of seven markers (IGSR; lead, antimony, and copper, and OGSR; nitroglycerin, 2,4-dinitrotoluene, diphenylamine, and ethyl centralite) was achieved with limits of detection (LODs) below 1 µg/mL. A large population data set was obtained from 395 authentic shooter samples and 350 background samples. Various statistical methods and machine learning algorithms, including critical thresholds (CT), naïve Bayes (NB), logistic regression (LR), and neural networks (NN), were utilized to calculate the performance and error rates. Neural networks proved to be the best predictor when assessing the dichotomous question of detection of GSR on the hands of shooter versus nonshooter groups. Accuracies for the studied population were 81.8 % (CT), 88.1% (NB), 94.7% (LR), and 95.4% (NN), respectively. The ability to detect both IGSR and OGSR simultaneously provides a selective testing platform for gunshot residues that can provide a powerful field-testing technique and assist with decisions in case management.     

Average,normal, and beautiful: representations of bodies in Brazilian biotypology (1930-1940)

Th present article deals with the visual culture present in the books and textbooks on biotypology in Brazil, in the 1930s and 1940s. It analyses the representations of bodies in images, all of which were employed to guide people on the reasoning and practices of bodily measurement and classification according to the main biotypology approaches. Images herein discussed expressed the following scientific modus operandi of biotypology in Brazil: anthropometry, biometry and the construction of an average body; categorisation of biotypes, physical culture and classic aesthetic; and the link between normality, beauty and moral conceptions applied to women’s body features. This analysis also seeks to shed light on some of the ways in which biotypology strayed from and was consistent with eugenic discourse in Brazil. The representation of bodies in Brazilian biotypology showed the efforts to construct normal and deviant bodies defined according to ideals of national and racial identity, perfection, symmetry, harmony, goodness, fairness, femininity and beauty.     

Exploring the invocation of emotion in presidential speeches

Scholars have long explored why presidential rhetoric is important and how it matters for public leadership and policy-making. However, relatively few works have considered the role that emotion plays in leadership communication and no research has conducted a thorough examination of the various types of emotions invoked in presidential rhetoric, their frequency, or how they have shaped presidential discourse over time. In this study, presidential speeches across 13 administrations (1933–2011) are examined to provide a first assessment of the extent to which US presidents have invoked fear, anger, and hope across policy domains and key types of speeches.     

‘Pinstripes on the prairies’: examining the financialization of farming systems in the Canadian prairie provinces

Drawing on recent scholarship on the financialization of agro-food systems and the global land grab, this paper examines new forms of financial investment in agriculture in the Canadian prairie provinces. We examine the factors underpinning investor involvement in the sector, including its anticipated financial performance as well as processes of agricultural restructuring that, combined with government actions to liberalize farmland ownership, have facilitated the enrollment of land and labour into new financial vehicles. We focus in particular on the emergence of two new forms of investment vehicles – farmland investment funds and an exchange-traded farming corporation – comparing the business model and investment strategy of each. In doing so, we highlight the ways in which the new investment patterns may propel the restructuring of the agricultural sector, alter power relations among key actors, and introduce new logics into the farming landscape. Our findings allow us to comment on the relevance of the land grabbing frame for making sense of the financialization of agriculture in the global North.     

Vitalism's after-burn: The sense of Ana Mendieta

This article considers the influential work of Ana Mendieta. Focusing on her siluetas series, Muñoz describes Mendieta's art as performing a modality of brownness that leaves resonant indentions on the world, what he calls vital materialist after-burns. Mendieta's after-burns are read alongside the poet's of Négritude and their investment in a critical élan vital that speaks to the historical precariousness of dispossessed people. The artist's work is explained as a meditation on a critical brownness that is theorized as the sharing out of the unshareable, the invaluable and the incalculable.?Mendieta's intervention is ultimately described as the work of offering a brown sense of the world in which singularities flow into a politically enabling common.     

Biofuel, dairy production and beef in Brazil: competing claims on land use in São Paulo state

This paper examines the competing claims on land use resulting from the expansion of biofuel production. Sugarcane for biofuel drives agrarian change in So Paulo state, which has become the major ethanol-producing region in Brazil. We analyse how the expansion of sugarcane-based ethanol in So Paulo state has impacted dairy and beef production. Historical changes in land use, production technologies, and product and land prices are described, as well as how these are linked to changing policies in Brazil. We argue that sugarcane/biofuel expansion should be understood in the context of the dynamics of other agricultural sectors and the long-term national political economy rather than as solely due to recent global demand for biofuel. This argument is based on a meticulous analysis of changes in three important sectors - sugarcane, dairy farming, and beef production - and the mutual interactions between these sectors.     

Der maximal Fremde. Überlegungen zu einer transhumanen Handlungstheorie

The article broadens the previous scope of social and cultural science theories of otherness by postulating the theoretic-analytic border category of the “strangest stranger”. This category shall serve various scientific disciplines to identify, reconstruct and understand interactions of humans and non-human actors, such as domesticated and wild animals, robots and aliens, or ghosts, angels and demons. Following a brief overview of contemporary social science theories of otherness the new border category of otherness will be theoretically specified. Subsequently, three practical examples (dolphins in a therapeutic context, aliens in SETI-research, and demons in catholic exorcism) will demonstrate scientific, religious but also secular contexts in which this new category is of analytical importance.     

Dynamics of NGO legitimacy: how organising betrays core missions of INGOs

International non‐governmental organisations (INGOs) are prominent actors in the international arena, aiming to improve the life of disadvantaged people. However, INGOs often do not succeed in doing this. Consequently, INGO legitimacy is regularly questioned. Increased transparency and tightened accountability mechanisms are often‐mentioned solutions to this problem. Based on an analysis of four dimensions of INGO legitimacy—normative, regulatory, cognitive and output legitimacy—we argue that this is not necessarily adequate. We conclude that INGO mission statements create a normative source of legitimacy, but that this, in itself, is not enough to ground INGO legitimacy: it also needs to be institutionalised and organised. However, as a result of power relations and resulting pressures for accountability and transparency, as defined by their external stakeholders, INGOs experience a permanent struggle to reconcile their mission with the requirements for regulatory, cognitive and output legitimacy. The more these stakeholders press for increased organisation of INGO work, the more the pursuit of the core objectives of INGOs is obstructed. We illustrate this argument with the case of the post‐Tsunami humanitarian intervention (2004/2005). Copyright © 2008 John Wiley & Sons, Ltd.     

A mixed-utility theory of vote choice regret

The paper builds upon an original pre- and post-election survey that we conducted before and after the 2015 Canadian election. Directly after Election Day, we asked Canadians for which party they voted, and whether they regret their choice. We find that 39% of them are not perfectly happy with their decision, and 4% even say that they made a bad decision. We show that the propensity to regret can be explained by a mixed-utility theory, whereby voters attempt to maximize a mixture of instrumental and expressive utilities. Our study contributes to the literatures on voting behaviour and political economy, which usually considers that voters are either instrumental or expressive, but not both at the same time.