Browsing Statistics and Population Studies by Issue Date
Now showing items 81-100 of 162
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The Herschel* view of the environment of the radio galaxy 4C+41.17 at z = 3.8
(Oxford University Press, 2013)We present Herschel observations at 70, 160, 250, 350 and 500 μm of the environment of the radio galaxy 4C+41.17 at z = 3.792. About 65 per cent of the extracted sources are securely identified with mid-infrared sources ... -
Is millennium development goal 4 achievable in Tanzania?
(WB Saunders, 2013)Introduction: This paper will focus on MDG4, which is concerned with reducing child mortality. Childhood mortality rates are the leading indicator of the level of child health and overall development of a country; and ... -
Maths4Stats: Opleiding vir onderwysers
(AOSIS, 2013)Maths4Stats: Educating teachers. The inadequate nature of the education infrastructure in South Africa has led to poor academic performance at public schools. Problems within schools such as under-qualified teachers and ... -
An O−C (and light travel time) method suitable for application to large photometric databases
(Oxford University Press, 2014)The standard method of studying period changes in variable stars is to study the timing residuals or O−C values of light-curve maxima or minima. The advent of photometric surveys for variability, covering large parts of ... -
Multicolour time series photometry of the variable star 1SWASP J234401.81−212229.1
(Oxford University Press, 2014)1SWASP J234401.81-212229.1 may be one of a handful of contact binaries comprising two Mdwarfs. Modelling of the available observations is complicated by the fact that the radiation of the eclipsing system is dominated ... -
A search for p-mode pulsations in white dwarf stars using the Berkeley Visible Imaging Tube detector
(Oxford University Press, 2014)We present high-speed photometry (resolution 0.1 s) obtained during the commissioning of the Berkely Visible Imaging Tube system on the Southern African Large Telescope (SALT). The observations were an attempt to search ... -
Causes and patterns of morbidity and mortality in Afghanistan: Joint estimation of multiple causes in the neonatal period
(Springer, 2014)This paper focuses on investigating the leading cause(s) of death and preventable factors in Afghanistan, using data from verbal autopsies of infant deaths. We are of the view that the presence of a disease in a person ... -
A qualitative study of referring agents’ perceptions of access barriers to inpatient substance abuse treatment centres in the Western Cape
(BioMed Central, 2015)Background: Despite empirical support for the individual and public health benefits of treating substance use disorders (SUDs) , access to these services is impeded by several barriers. Although many studies on access ... -
A detection threshold in the amplitude spectra calculated from Kepler data obtained during K2 mission.
(Oxford University Press, 2015)We present our analysis of simulated data in order to derive a detection threshold which can be used in the pre-whitening process of amplitude spectra. In case of ground-based data of pulsating stars, this threshold is ... -
The analysis of indexed astronomical time series – XI. The statistics of oversampled white noise periodograms
(Oxford University Press, 2015)The distribution of the maxima of periodograms is considered in the case where the time series is made up of regularly sampled, uncorrelated Gaussians. It is pointed out that if there is no oversampling, then for large ... -
Multicolour time series photometry of four short-period weak-lined T Tauri stars
(Oxford University Press, 2015)The paper describes continuous photometric monitoring of four pre-main-sequence stars, probable members of young stellar associations. Measurements, covering at least four nights per star, were obtained by cycling through ... -
Associated risk factors of STIs and multiple sexual relationships among youths in Malawi
(PLoS, 2015)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 ... -
Multicolour time series photometry of the T Tauri star CVSO 30
(Oxford University Press, 2015)Five consecutive runs of at least five hours, and two shorter runs, of V(RI)C time series photometry of CVSO 30 are presented. No evidence could be seen for planetary transits, previously claimed in the literature for ... -
The analysis of indexed astronomical time series – XII. The statistics of oversampled Fourier spectra of noise plus a single sinusoid
(Oxford University Press, 2015)With few exceptions, theoretical studies of periodogram properties focus on pure noise time series. This paper considers the case in which the time series consists of noise together with a single sinusoid, observed at ... -
Control of airborne microbes in a poultry setting using Dioxy MP 14
(FACTA-FUNDACIO ARNCO CIENCIA TECNOLOGIA AVICOLAS, 2015)In this study, Dioxy MP 14, a locally developed form of chlorine dioxide, was tested in a commercial chicken pen to determine its effectiveness as an airborne environmental sanitizing agent. The biocide was introduced via ... -
Trends in HIV risk behaviour of incoming first-year students at a South African university: 2007–2012
(Taylor and Francis Group, 2015)The aim of the research on which this article is based was to understand the behavioural changes of the target student populationover time to ensure that future prevention programmes are more effective in changing behaviour. ... -
Correlates of gender characteristics, health and empowerment of women in Ethiopia
(BMC, 2015)The low status of women prevents them from recognizing and voicing their concerns about health needs. This study aimed to examine the relationship between gender characteristics, health and empowerment of women in an ... -
Informal land sale and housing in the periphery of Pointe-Noire
(GIGA German Institute of Global and Area Studies, 2016)This article examines the relations between practices in informal land transactions under customary tenure and spatial differentiation among suburbs in the periphery of the city of Pointe-Noire, Congo- Brazzaville. Urban ... -
A review of the underlying factors influencing female genital mutilation in Africa
(Taylor & Francis, 2016)Female Genital Mutilation (FGM) is a re-occurring decimal in Africa. This phenomenon is estimated to occur in over twenty-five (25) countries in Africa. It is further estimated that FGM has been performed on nearly two ... -
Comparative analysis of the use of professional health providers by young mothers in developing countries: A new frontier for health education
(AFAHPER-SD, 2016)Childbearing accelerates the risk of maternal and child morbidity and young mothers have a much higher risk of dying from maternal causes. Therefore, understanding the dynamics of young mothers’ use of professional health ...