Associated risk factors of STIs and multiple sexual relationships among youths in Malawi

Having unprotected sex with multiple sexual partners (MSP) is the greatest risk factor for human immunodeficiency virus (HIV) and other sexually transmitted infections (STIs) among youths. Young people with MSPs are less likely to use a condom and the greater the risk for STIs. This study examines the associated risk factors of STIs and multiple sexual partnerships among youths aged 15–24 years. The Malawi Demographic Health Survey 2010 data was used. Out of a sample of 2,987 males and 9,559 females aged 15–24 years, 2,026 males and 6,470 females were considered in the study. Chi square test and logistic regression techniques were performed. Analysis was performed using Statistical Package for Social Sciences (SPSS) version 22.Article writing fellowships were received from the Research Development Office, University of the Western Cape, 7535 Bellville, Cape Town, South Africa.Web of Scienc

LSST: from Science Drivers to Reference Design and Anticipated Data Products

(Abridged) We describe here the most ambitious survey currently planned in the optical, the Large Synoptic Survey Telescope (LSST). A vast array of science will be enabled by a single wide-deep-fast sky survey, and LSST will have unique survey capability in the faint time domain. The LSST design is driven by four main science themes: probing dark energy and dark matter, taking an inventory of the Solar System, exploring the transient optical sky, and mapping the Milky Way. LSST will be a wide-field ground-based system sited at Cerro Pach\'{o}n in northern Chile. The telescope will have an 8.4 m (6.5 m effective) primary mirror, a 9.6 deg$^2$ field of view, and a 3.2 Gigapixel camera. The standard observing sequence will consist of pairs of 15-second exposures in a given field, with two such visits in each pointing in a given night. With these repeats, the LSST system is capable of imaging about 10,000 square degrees of sky in a single filter in three nights. The typical 5$\sigma$ point-source depth in a single visit in $r$ will be $\sim 24.5$ (AB). The project is in the construction phase and will begin regular survey operations by 2022. The survey area will be contained within 30,000 deg$^2$ with $\delta<+34.5^\circ$, and will be imaged multiple times in six bands, $ugrizy$, covering the wavelength range 320--1050 nm. About 90\% of the observing time will be devoted to a deep-wide-fast survey mode which will uniformly observe a 18,000 deg$^2$ region about 800 times (summed over all six bands) during the anticipated 10 years of operations, and yield a coadded map to $r\sim27.5$. The remaining 10\% of the observing time will be allocated to projects such as a Very Deep and Fast time domain survey. The goal is to make LSST data products, including a relational database of about 32 trillion observations of 40 billion objects, available to the public and scientists around the world.Comment: 57 pages, 32 color figures, version with high-resolution figures available from https://www.lsst.org/overvie

High school suicide in South Africa: teachers' knowledge, views and training needs

BACKGROUND: Suicidal ideation and attempted suicide are a huge problem in South Africa, especially in the rural areas. Previous research has emphasized the importance of the ability of school professionals to identify young people who are at risk of committing suicide. The objectives of this study were to assess the knowledge of teachers with regard to identifying the warning signs of suicidal behaviour, assessing the type of information they give to students in the class after a suicide of one of their class mates, and assessing their views and training needs on the prevention of suicidal behaviour in students. METHODS: Five focus group discussions were conducted with 50 high school teachers in Limpopo Province, South Africa. All focus group discussions were audio-taped, transcribed verbatim, and then analysed using an inductive approach. RESULTS: The results demonstrate that teachers lack knowledge of the warning signs of suicidal behaviour among students. They also report that they do not know how to support students in the event of attempted or completed suicide of another student. The school curriculum is perceived as lacking information on suicide and suicidal behaviour. CONCLUSIONS: Teachers in Limpopo Province need to be trained to identify students at risk, and to respond to situations by referring individuals at risk to appropriate mental health professionals. School-based suicide prevention programmes that are based on theory and evidence should be developed. These programmes should include teacher training to help teachers to identify symptoms of psychosocial problems that might lead to suicide, develop their skills in handling such problems, and help students to cope with their emotions after a suicide incident in the class or at school