Effect of conspecific sex on aggression during pregnancy and lactation in golden hamsters

The effect of conspecific sex on maternal aggression in hamsters was determined by comparing the frequency of aggressive responses by dams continuously housed with either a virgin male or female cagemate during pregnancy and lactation. Dams easily established aggressive dominance over male cagemates soon after pairing, and their aggression was low thereafter for the duration of pregnancy and lactation. The aggression of dams with females, on the other hand, tended to fluctuate with highs during mid pregnancy and mid lactation and lows around birth. When dam aggression was low around birth, female cagemates frequently became aggressively dominant, and several dams lost their litters. The higher aggression of dams toward females than males is probably a reflection of greater intrasexual competition for environmental resources that includes pups.     

SARS事件后对卫生体制的反思

SARS事件突出暴露了我国经济和社会发展不协调的问题,由于缺乏科学发展观统领医疗卫生事业的发展,在体制改革中片面突出经济增长在社会发展中的作用、片面追求市场化的支配地位,是导致病象的内在逻辑。从构建“和谐社会”的战略出发,认为应避免社会公共事务管理的“泛市场化”倾向,指出“有管理的市场化”是其应然走向,呼吁在改革实践中重新回复人文精神。     

市场、价值取向、政府之于医疗卫生

分析了现代医疗卫生服务的消费品属性并将其划分为3大部分,由此形成的不同供给渠道,决定了医疗卫生服务的市场运作方式的必然性,但必须坚持始终如一的正确的价值取向——社会公众利益最大化的医疗卫生服务的基本目标。强势的政府主导是医疗卫生改革与发展的关键,提出了当前政府主导作用的具体意见和建议。     

Prediction and classification in nonlinear data analysis: Something old,something new,something borrowed,something blue

Prediction and classification are two very active areas in modern data analysis. In this paper, prediction with nonlinear optimal scaling transformations of the variables is reviewed, and extended to the use of multiple additive components, much in the spirit of statistical learning techniques that are currently popular, among other areas, in data mining. Also, a classification/clustering method is described that is particularly suitable for analyzing attribute-value data from systems biology (genomics, proteomics, and metabolomics), and which is able to detect groups of objects that have similar values on small subsets of the attributes.This article is based on the Presidential Address Jacqueline Meulman gave on July 9, 2003 at the 68th Annual Meeting of the Psychometric Society held near Cagliari, Italy on the island of Sardinia.—Editor     

How the Market Became Divine

We have moved beyond a “market economy” to what some have called a “market society,” one in which everything seems to be for sale. We also now see the advent of a “market religion,” in which the values and life meanings of consumer culture have become dominant. This new religion has its own doctrines, rituals, priesthood, and mission to “go into all the world.” It has its own narratives of creation, fall, and redemption, and its own saints and heroes. But because its underlying thrust is endless growth, and we live on a finite planet, it is carrying us toward destruction. Some parts of Christianity are opposing what Pope Francis has called “idolatry,” but unfortunately most parts are being swept into its new dispensation.     

What role does substance use play in the social world of Australian people who have experienced homelessness? A critical realist mixed‐methods exploration

Substance use is prevalent amongst Australians who have experienced homelessness, but the social impacts of using substances amongst this group are poorly understood. This study uses a relational and critical realist approach to understand the role of substance use on the social lives of people with lived experience of homelessness. A mixed‐methods design was used to explore this question and assess the experiences of people who have exited homelessness. Recruiting across services catering to marginalised populations, 110 participants completed a cross‐sectional survey. Findings showed substance use both socially connected and disconnected participants, and that attempting abstinence required participants to negotiate and alter their social networks. To participants, being a substance “user,” or “non‐user,” was a social identity that they actively negotiated to facilitate competing social, psychological and material/embodied needs. Participants chose to engage and not engage with others to craft a social identity they valued, which had the sometimes‐negative side‐effect of limiting potential relationships, leaving users feeling isolated from their non‐users and a continued imperative to keep using. The impacts of substance use on social networks were similar for currently and formerly homeless participants, suggesting transitioning into housing may not immediately prompt a reduction in substance use or influence from substance‐using peers. Interventions with substance users with lived experience of homelessness would benefit from taking a social identity approach that incorporates an understanding of the material/embodied aspects of addiction to provide a holistic model of care that best supports the relational needs of the client.