‘Just kidding. I'm white!’ knowledge,perceptions and attitudes of white and Indian male university students towards HIV prevention

This article reports the findings of a qualitative study that explored what white and Indian students at a South African university felt and knew about HIV prevention. The study explored the knowledge, perceptions and attitudes of white and Indian male students at the University of KwaZulu-Natal's (UKZN) Howard College towards medical male circumcision (MMC) as an HIV prevention procedure. The study was prompted, in part, by a cynical tweet by Justine Sacco, which implied that HIV is an exclusively black disease. More substantially, the research aimed to fill a gap in studies of non-black student demographics with regard to HIV prevention. The level of knowledge and the attitudes of white and Indian male students were explored to establish the acceptability of HIV prevention amongst these two demographics. To what extent do non-black students care about HIV prevention and prevalence amongst themselves? The prevention method selected for the study was MMC - a choice informed by UKZN's formal adoption and roll out, in 2013, of MMC as its latest HIV prevention strategy for students and staff. The study, which sampled 40 students, was rooted in the Health Belief Model, which explains health behaviour change in terms of barriers, benefits and cues to action, as well as the Social Ecology Model, which recognises the interwoven relationship between individuals and their greater environment. A qualitative, interpretive, exploratory research design was employed. Data were collected using semi-structured interview questions, and analysed thematically. The findings suggest a relatively widespread perception that white and Indian students are not at risk of HIV, demonstrating that the association of HIV with a specific race is both a sad fact and a sign of enduring prejudice and stigma.     

Exploring the Impacts of Ordinary Laboratory Alterations During Forensic DNA Processing on Peak Height Variation,Thresholds, and Probability of Dropout,

Impacts of validation design on DNA signal were explored, and the level of variation introduced by injection, capillary changes, amplification, and kit lot was surveyed by examining a set of replicate samples ranging in mass from 0.25 to 0.008 ng. The variations in peak height, heterozygous balance, dropout probabilities, and baseline noise were compared using common statistical techniques. Data indicate that amplification is the source of the majority of the variation observed in the peak heights, followed by capillary lots. The use of different amplification kit lots did not introduce variability into the peak heights, heterozygous balance, dropout, or baseline. Thus, if data from case samples run over a significant time period are not available during validation, the validation must be designed to, at a minimum, include the amplification of multiple samples of varying quantity, with known genotype, amplified and run over an extended period of time using multiple pipettes and capillaries.     

A Validation Study of Bullet and Cartridge Case Comparisons Using Samples Representative of Actual Casework

The foundation of firearm and tool mark identification is that no two tools should produce the same microscopic marks on two separate objects that they would be inaccurately or wrongly identified. Studies addressing the validity of identification infrequently employ tests that mirror realistic casework scenarios. This study attempted to do so using a double‐blind process, reducing test‐taking bias. Test kits including bullets and cartridge cases but not the associated firearms were completed by 31 analysts from 22 agencies. Analysis of the results demonstrated an overall error rate of 0.303%, sensitivity of 85.2%, and specificity of 86.8%. Variability in performance across examiners is addressed, and the effect of examiners’ years of experience on identification accuracy is explored. Finally, the article discusses the importance of studies using realistic case work scenarios when validating the field's performance and in providing courts with usable indicators of the accuracy of firearm and tool mark identification.     

日本护理保险制度制定的原因分析及启示

战后,面对快速到来的老龄化社会,日本政府在社会保险方面采取了各种对策,老年护理保险制度经历了从无到有、不断发展完善的过程,其间既有成功经验,又有失败教训。目前,我国的老龄人口护理问题也日益突出,如何建立符合我国国情的老年护理保险体系,日本的做法是具有参考价值的。     

‘An error is feedback’: the experience of communication error management in crisis negotiations

A range of studies have examined what should be said and done in crisis negotiations. Yet, no study to date has considered what happens when an error is made, how to respond to an error, and what the consequences of errors and responses might be on the negotiation process itself. To develop our understanding of errors, we conducted 11 semi-structured interviews with police crisis negotiators in the Netherlands. Negotiators reported making errors of three types: factual, judgment, or contextual. They also reported making use of four types of response strategy: accept, apologize, attribute, and contradict. Critically, the negotiators did not perceive errors as solely detrimental, but as an opportunity for feedback. They advocated for an error management approach, which focused on what could be learned from another person’s errors when looking back at them. Suggestions for improvement of the communication error management experience in crisis negotiations are discussed.     

四川松潘县秦艽资源调查及鉴别

目的 调查松潘县秦艽的种类、资源分布、生态环境特征、生长状况和利用现状.方法 实地踏查、样方调查结合文献研究.结果松潘县秦艽资源主要为秦艽Gentiana macrophylla Pall.、麻花秦艽Gentiana straminea Maxim.和粗茎秦艽Gentiana crassicaulis Duthie e...