Browsing Research Output by Title
Now showing items 1580-1599 of 13368
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Change in woody cover at representative sites in the Kruger National Park, South Africa, based on historical imagery
(SpringerOpen, 2016)Background: The coexistence of woody vegetation and grass is a key characteristic of savanna ecological balance. Gains in woody vegetation at the expense of grass can lead to changes in grazer and browser carrying capacities ... -
Change over three years in adolescents' physical activity levels and patterns after a physical activity intervention: play study
(Edizioni Minerva Medica, 2012)AIM: This study aimed to determine over a three-year period what the PA levels and patterns of adolescents will be after participating in a physical activity (PA) intervention. METHODS: African adolescents (158 boys, 211 ... -
Change over three years in adolescents’ physical activity levels and patterns after a physical activity intervention: play study
(Edizioni Minerva Medica, 2012)AIM: This study aimed to determine over a three-year period what the PA levels and patterns of adolescents will be after participating in a physical activity (PA) intervention. METHODS: African adolescents (158 boys, 211 ... -
Change point detection with multivariate observations based on characteristic functions
(Springer, 2017)We consider break-detection procedures for vector observations, both under independence as well as under an underlying structural time series scenario. The new methods involve L2-type criteria based on empirical characteristic ... -
Change-point methods for multivariate time-series: paired vectorial observations
(Springer, 2020)We consider paired and two-sample break-detection procedures for vectorial observations and multivariate time series. The new methods involve L2-type criteria based on empirical characteristic functions and are easy to ... -
Changeover-time in psychosocial wellbeing of people living with HIV and people living close to them after an HIV stigma reduction and wellness enhancement community intervention
(Taylor & Francis, 2015)HIV stigma continues to affect the psychosocial wellbeing of people living with HIV (PLWH) and people living close to them (PLC). Literature unequivocally holds the view that HIV stigma and psychosocial wellbeing interact ... -
Changes in abundance of fish-parasitic gnathiid isopods associated with warm-water bleaching events on the northern Great Barrier Reef
(Springer, 2019)Mass coral bleaching events due to rising seawater temperatures are occurring with increasing frequency and are among the most conspicuous consequences of human-induced climate change. While bleaching events have clear ... -
Changes in body composition and cardiometabolic risk among black South African adults
(Karger, 2017)Background and objectives: Obesity-related health risk may differ by ethnicity at the same body mass index (BMI). The objectives of this study were too determine the predictive value of the World Health Organization ... -
Changes in coronary heart disease risk profile of adults with intellectual disabilities following a physical activity intervention
(Wiley-Blackwell, 2009)Background Regular physical activity is one of the modifiable risk factors for coronary heart disease (CHD). With an increasing age profile and similar patterns of morbidity to the general population, persons with ... -
Changes in density and composition of algal assemblages in certain unit processes of two South African water purification plants
(Taylor & Francis, 2014)The water purification plants at Virginia and Bothaville, South Africa, experience problems with cyanobacteria and other algae. Their algal assemblages were studied during 2010 and 2011 to determine the dominant species ... -
Changes in epistemic frameworks: random or constrained?
(Scriber Editorial Systems, 2012)Since the emergence of a solid anti-positivist approach in the philosophy of science, an important question has been to understand how and why epistemic frameworks change in time, are modified or even substituted. In ... -
Changes in food intake from 2005 to 2010 by a cohort of black rural and urban African men and women in the North West Province of South Africa: the PURE-NWP-SA study
(Cambridge Univ Press, 2018)Objective We have shown that nutrient intakes of rural and urban black Africans in the North West Province (NWP) of South Africa (SA) followed the typical nutrition transition pattern upon urbanization and modernization. ... -
Changes in gait and posture as factors of dynamic stability during walking in pregnancy
(Elsevier, 2018)Changes in gait and postural control during pregnancy may lead to increased fall rates during walking relative to non-pregnant women. Due to lack of empirical evidence on balance and postural control in dynamic conditions, ... -
Changes in local free-living parasite populations in response to cleaner manipulation over 12 years
(Springer, 2019)Predation on parasites is an important ecological process, but few experimental studies have examined the long-term impacts on the prey. Cleaner fish prey upon large numbers and selectively feed on the larger individuals ... -
Changes in Perceptions of the Internet’s Influence on Marketing in South Africa since the Late-1990s
(kamla-Raj Enterprises, 2014)The present paper reports on a study that compared senior marketers’ perceptions of the Internet’s influence on marketing in South Africa in 1997 with their perceptions nearly two decades later in 2011. In South Africa, ... -
Changes in peripheral blood pressure with normal and accelerated aging
(Elsevier, 2015)Aging represents an important risk factor in the development of cardiovascular disease (CVD). Nevertheless, the question arises: How immutable is age as a risk factor? Can we make a distinction between physiologic or ... -
Changes in selected physical, motor performance and anthropometric components of university-level rugby players after one microcycle of a combined rugby conditioning and plyometric training program
(Lippincott, Williams & Wilkins, 2013)Pienaar, C and Coetzee, B. Changes in selected physical, motor performance and anthropometric components of university-level rugby players after one microcycle of a combined rugby conditioning and plyometric training ... -
Changes in soil fertility and Pak choi (Brassica chinensis L.) nutritional content in response to agouti (Dasyprocta leporina Linnaeus, 1758) manure amendment
(The University of the West Indies, 2017)Evaluating agouti manure (AM) as a source of macronutrients for plant production is a precursor to ensuring appropriate land application. Agouti manure was compared to cattle manure (CM) and mineral fertiliser (MF) applied ... -
Changes in the algal composition and water quality of the Sundays River, Karoo, South Africa, from source to estuary
(Taylor & Francis, 2015)A first survey was done on algae present in the Sundays River from its source to its confluence with the sea. Species found in the upstream sections of the river included indicators of good water quality, but the quality ... -
Changes in the foot strike pattern and pressure distribution when running in minimalist and traditional sport shoes
(Edizioni Minerva Medica, 2018)BACKGROUND: New trends in the use of minimalist shoes and barefoot running lead to the monitoring of movement patterns wearing sports shoes and minimalist shoes while running. Therefore, the objective was to compare the ...
