Consensual Violence: A Cultural Contradiction

In American culture, violence is typically understood as inherently negative; no one would want to be personally subjected to violence because violence by its very nature is undesirable. Thus, the idea of seeking out violence seems paradoxical. In cases where a person actively pursues violent treatment, the question arises: can violence be consensual? This question is included in discourse on sadomasochism (SM), or an attraction to giving or receiving pain in a sensual or sexual context, which many argue is a form of violence. Through a critical discourse analysis of legal statutes regarding interpersonal violence and interviews with women involved in SM, I will address the question of whether or not sadomasochism can be considered physical and sexual violence

Factors influencing biodiversity within organic and conventional systems of arable farming – methodologies and preliminary results

This report was presented at the UK Organic Research 2002 Conference. This paper describes the approaches and preliminary results of a study that is designed to provide a large amount of data at a range of scales in order to investigate the potential factors influencing biodiversity on arable farmland on comparable organic and conventional farms. In particular, the study examines the role of non-crop habitats within the different farming systems and how the extent and management of non-crop habitats differs between them. A detailed description of the methodologies being employed to establish differences in non-crop habitat, plant, invertebrate and bird diversity is given. The study remains in its early stages as a result of the impact of Foot and Mouth disease on the fieldwork schedule during 2001. The process of setting up the study revealed that the numbers of farmers growing cereals organically are low as a proportion of the organic sector as a whole, despite recent large increases in numbers of farmers converting to organic production. Preliminary results from the first year of fieldwork on plants reveal significant differences between organic and conventional farms in terms of the numbers of weed species on fields and non-significant differences in numbers of species found on non-crop habitats

To Veil or Not to Veil: A Loaded Question

What all Americans should know about women in the Muslim world is that Muslim women are increasingly prohibited through legal measures to choose for themselves whether or not to veil, which reduces their agency and perpetuates the harmful idea that all Muslim women need saving.This paper takes a look at political and legislative interventions on veiling in several countries

Sustainable Investing and the Cross-Section of Maximum Drawdown

We use supervised learning to identify factors that predict the cross-section of maximum drawdown for stocks in the US equity market. Our data run from January 1980 to June 2018 and our analysis includes ordinary least squares, penalized linear regressions, tree-based models, and neural networks. We find that the most important predictors tended to be consistent across models, and that non-linear models had better predictive power than linear models. Predictive power was higher in calm periods than stressed periods, and environmental, social, and governance indicators augmented predictive power for non-linear models

Risk Without Return

Risk-only investment strategies have been growing in popularity as traditional in- vestment strategies have fallen short of return targets over the last decade. However, risk-based investors should be aware of four things. First, theoretical considerations and empirical studies show that apparently dictinct risk-based investment strategies are manifestations of a single effect. Second, turnover and associated transaction costs can be a substantial drag on return. Third, capital diversification benefits may be reduced. Fourth, there is an apparent connection between performance and risk diversification. To analyze risk diversification benefits in a consistent way, we introduce the Risk Diversification Index (RDI) which measures risk concentrations and complements the Herfindahl-Herschman Index (HHI) for capital concentrations

Electron and Photon Interactions in the Regime of Strong LPM Suppression

Most searches for ultra-high energy (UHE) astrophysical neutrinos look for radio emission from the electromagnetic and hadronic showers produced in their interactions. The radio frequency spectrum and angular distribution depend on the shower development, so are sensitive to the interaction cross sections. At energies above about 10^{16} eV (in ice), the Landau-Pomeranchuk-Migdal (LPM) effect significantly reduces the cross sections for the two dominant electromagnetic interactions: bremsstrahlung and pair production. At higher energies, above about 10^{20} eV, the photonuclear cross section becomes larger than that for pair production, and direct pair production and electronuclear interactions become dominant over bremsstrahlung. The electron interaction length reaches a maximum around 10^{21} eV, and then decreases slowly as the electron energy increases further. In this regime, the growth in the photon cross section and electron energy loss moderates the rise in nu_e shower length, which rises from ~10 m at 10^{16} eV to ~50 m at 10^{19} eV and ~100 m at 10^{20} eV, but only to ~1 km at 10^{24} eV. In contrast, without photonuclear and electronuclear interactions, the shower length would be over 10 km at 10^{24} eV.Comment: 10 pages, 9 figures. Submitted to Physical Review

Xogenesis

We present a new paradigm for dark matter in which a dark matter asymmetry is established in the early universe that is then transferred to ordinary matter. We show this scenario can fit naturally into weak scale physics models, with a dark matter candidate mass of this order. We present several natural suppression mechanisms, including bleeding dark matter number density into lepton number, which occurs naturally in models with lepton-violating operators transferring the asymmetry.Comment: 11 pages, 4 figure

What’s wrong with ‘mental’ disorders? : a commentary on ‘What is a mental/psychiatric disorder? : from DSM-IV to DSM-V’ by Stein et al

The editorial by Stein et al. (2010) is timely and relevant given the development of DSM-V and the likely impact that such a development will have on mental health services in the USA. The revision of the DSM will also affect international psychiatric research and global practice thanks to the interplay between the development of DSM and ICD (Fulford & Sartorius, 2009). The editorial by Stein and colleagues is very rich and there are many themes suitable for further examination and discussion. For this response, however, we have chosen to focus on two themes: the use of the term ‘mental’ and the idea of psychiatric disorders being ‘in’ an individual