Trends and determinants of contraceptive prevalence in Namibia: from the 90s to the new millenium

Magister Scientiae - Msc (Statistics)Contraception is said to be one of the vital determinants of fertility (Bongaarts, 1978). African nations, especially those in sub-Saharan Africa have a history of high fertility levels and low contraceptive use. However, contraceptive methods have been used one way or another throughout human history, although, due to improvements, these methods have evolved over the years. In Namibia, there tend to be a huge gap between women's knowledge of methods of contraception and usage thereof. For instance as per NDHS survey of 2000, 97 percent of married women knew of a contraceptive method, while 38 percent utilised them. This study aims at investigating knowledge and usage of contraceptives among women in union of reproductive age in an independent Namibia, 10 years after independence between 1992 and 2000. Socio-economic and demographic factors affecting contraceptive usage are examined in this study to determine their significance.South Afric

Asteroseismology and Interferometry

Asteroseismology provides us with a unique opportunity to improve our understanding of stellar structure and evolution. Recent developments, including the first systematic studies of solar-like pulsators, have boosted the impact of this field of research within Astrophysics and have led to a significant increase in the size of the research community. In the present paper we start by reviewing the basic observational and theoretical properties of classical and solar-like pulsators and present results from some of the most recent and outstanding studies of these stars. We centre our review on those classes of pulsators for which interferometric studies are expected to provide a significant input. We discuss current limitations to asteroseismic studies, including difficulties in mode identification and in the accurate determination of global parameters of pulsating stars, and, after a brief review of those aspects of interferometry that are most relevant in this context, anticipate how interferometric observations may contribute to overcome these limitations. Moreover, we present results of recent pilot studies of pulsating stars involving both asteroseismic and interferometric constraints and look into the future, summarizing ongoing efforts concerning the development of future instruments and satellite missions which are expected to have an impact in this field of research.Comment: Version as published in The Astronomy and Astrophysics Review, Volume 14, Issue 3-4, pp. 217-36