Probabilistic linear solvers: a unifying view

Statistics and Computing - Several recent works have developed a new, probabilistic interpretation for numerical algorithms solving linear systems in which the solution is inferred in a Bayesian...     

Tolerated,threatening and celebrated: How Canadian news media frames temporary migrant workers

Immigration scholars have long observed that migrant workers are paradoxically both welcomed and deemed threatening within the nation state. In this paper, we investigate the extent to which mainstream media outlets reinforce these perceptions. Using critical discourse analysis, we analysed 561 articles in three mainstream newspapers to ascertain the various discourses used to describe migrant workers and migrant work. Our analysis specifically found that a cluster of ‘hiring scandals’ led to an increase in coverage on migrant work, and affected the types of discourses used in reference to migrant workers. Prior to these scandals, migrant work generated minimal media coverage. Ultimately, we find that migrant workers are deemed tolerable to the nation-state at certain time periods, deemed as threats in other time periods, and, in the current moment of the global health crisis, are deemed absolutely essential. Migrant workers are thus only 'conditionally included' in the state.     

Snake parasitism in an urban old-growth forest

Urban-associated changes can have immediate or long-term consequences on animal populations. Such changes may be assessed through parasite prevalence and abundance in wildlife hosts, as urbanization can influence parasitism and disease transmission in wildlife. Snakes are widespread and diverse vertebrates that often persist in urban environments; however, parasitism of snakes in urban environments has yet to be studied, leaving the roles of snakes in parasite transmission uncharacterized. Field ecology, microscopy, molecular techniques, and geographic information science (GIS) were integrated to characterize parasitism of snakes in an urban old-growth forest park. The species, sex, mass, length, location, and prevalence of ecto-, hemo-, and fecal parasites were determined for 34 snakes of 6 species. Ectoparasites (mite), hemoparasites (Hepatozoon spp.), and fecal parasites (Entamoeba spp., Trichomonas spp., Strongloides spp., and an unidentified helminth) were detected in snakes and 64.7?% of snakes were infected by at least one of these parasites. Parasite infections were generally not related to the sex, age, or body condition of snakes. The locations of infected snakes were used to produce risk maps indicating where parasite prevalence is predicted to be greatest. The analysis of these maps indicated that snakes with fecal parasites were closer than non-infected snakes to the edge of the forest. This study confirms that snakes may be important parasite hosts or reservoirs in parasite transmission pathways in urban environments and it provides an integrative multidisciplinary approach that may be used to monitor parasitism dynamics in other urban wildlife areas.     

Placeholders and Changemakers: Women Farmland Owners Navigating Gendered Expectations

Gendered expectations are central to the continuation of agricultural land tenure systems that concentrate land and power in the control of men. These expectations about how land should be used and by whom are communicated through cultural narratives and maintained through social interactions. Through analysis of qualitative data collected through in‐depth interviews with women farmland owners in Iowa, this article identifies a pivotal person without whom the success of these stories is in jeopardy: the “placeholder.” In this article, I identify how cultural narratives place two gendered expectations on women in the placeholder position: (1) that women landowners maintain farmland through the continuance of its use and preexisting land agreements with tenants or co‐owners, and (2) that women landowners defer their authority as landowners to men. Further, I identify the “changemaker” as an emerging character within cultural narratives—one who refuses to fit the expectations of placeholder and whose behavior may or may not be accepted by the community. Finally, I find that alternative social networks provide enabling environments for changemakers as sites of potential narrative revisions or shifts.     

Why social status matters for understanding the interrelationships between testosterone,economic risk‐taking,and gender

We conduct an extensive review of the literature on testosterone and economic risk‐taking behavior. In sum, there is evidence of a positive association between testosterone and economic risk taking, although it is unlikely to be a strong association given the abundance of null results. However, we argue that the existing literature may overstate the causal effects of testosterone on economic risk taking (or even report a spurious correlation) because this research has not considered the potentially confounding role of social status. Status could concurrently influence both testosterone and economic risk taking, given that testosterone is a social hormone with a reciprocal relationship with social status, and social status has been found to drive risk‐taking behavior. We also argue against using findings from this literature to make gender essentialist claims, primarily because social phenomena influence the size—and existence—of gender differences in economic risk‐taking behavior. We conclude with suggestions for future research.     

Mental Health and Clinical Correlates in Lesbian,Gay, Bisexual,and Queer Young Adults

Abstract

Objective: This study examined the prevalence of mental health disorders and their clinical correlates in a university sample of lesbian, gay, bisexual, and queer (LGBQ) students. Participants: College students at a large public university. Methods: An anonymous, voluntary survey was distributed via random e-mail generation to university students during April and May of 2011. LGBQ students were compared with their heterosexual counterparts on psychological and physical status as well as academic performance. Results: LGBQ students reported worse depressive symptoms, higher levels of perceived stress, considered themselves less attractive, and were more likely to be overweight. LGBQ students were significantly more likely to report histories of affective, substance use, and certain anxiety disorders as well as compulsive sexual behavior and compulsive buying. Conclusions: The higher rates of many psychiatric conditions among LGBQ students underscore the need for universities to provide LGBQ students a nonjudgmental environment to discuss sexual orientation and health issues.     

Power and Attraction to the Counternormative Aspects of Infidelity

Previous research shows that powerful people are more likely than those lacking power to engage in infidelity. One possible explanation holds (a) that power psychologically releases people from the inhibiting effects of social norms and thus increases their appetite for counternormative forms of sexuality. Two alternative explanations are (b) that power increases appetite for any form of sexuality, normative or counternormative, and (c) that power makes men (but not women) seem more attractive to others and thus increases their access to potential mating opportunities. The current research tested these explanations using correlational data from 610 Dutch men and women. Supporting the first explanation, power's relationship with infidelity was statistically mediated by increased attraction to the secrecy associated with infidelity. Inconsistent with the second explanation, power was linked with infidelity but not with casual sex among singles (a more normative form of sexuality). Inconsistent with the third explanation, the link between power and infidelity was observed just as strongly in women as in men. Findings suggest that power may be associated with infidelity because power draws people to the counternormative aspects of infidelity. Implications for theories of power, sexuality, and gender are discussed.     

Coalitions and clientelism in Mexico

Theory and Society -