Browsing by Subject "Migration"

Now showing 1 - 12 of 12
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    A comparison of physician emigration from Africa to the United States of America between 2005 and 2015
    (2017) Duvivier, Robbert J; Burch, Vanessa C; Boulet, John R
    BACKGROUND: Migration of health professionals has been a cause for global concern, in particular migration from African countries with a high disease burden and already fragile health systems. An estimated one fifth of African-born physicians are working in high-income countries. Lack of good data makes it difficult to determine what constitutes "African" physicians, as most studies do not distinguish between their country of citizenship and country of training. Thus, the real extent of migration from African countries to the United States (US) remains unclear. This paper quantifies where African migrant physicians come from, where they were educated, and how these trends have changed over time. METHODS: We combined data from the Educational Commission for Foreign Medical Graduates with the 2005 and 2015 American Medical Association Physician Masterfiles. Using a repeated cross-sectional study design, we reviewed the available data, including medical school attended, country of medical school, and citizenship when entering medical school. RESULTS: The outflow of African-educated physicians to the US has increased over the past 10 years, from 10 684 in 2005 to 13 584 in 2015 (27.1% increase). This represents 5.9% of all international medical graduates in the US workforce in 2015. The number of African-educated physicians who graduated from medical schools in sub-Saharan countries was 2014 in 2005 and 8150 in 2015 (304.6% increase). We found four distinct categorizations of African-trained physicians migrating to the US: (1) citizens from an African country who attended medical school in their own country (86.2%, n = 11,697); (2) citizens from an African country who attended medical school in another African country (2.3%, n = 317); (3) US citizens who attended medical school in an African country (4.0%, n = 537); (4) citizens from a country outside Africa, and other than the United States, who attended medical school in an African country (7.5%, n = 1013). Overall, six schools in Africa provided half of all African-educated physicians. CONCLUSIONS: The number of African-educated physicians in the US has increased over the past 10 years. We have distinguished four migration patterns, based on citizenship and country of medical school. The majority of African graduates come to the US from relatively few countries, and from a limited number of medical schools. A proportion are not citizens of the country where they attended medical school, highlighting the internationalization of medical education.
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    Aspects of plant dispersal in the southwestern Cape with particular reference to the roles of birds as dispersal agents
    (1988) Knight, Richard Spencer; Knight, Richard Spencer; Siegfried, Roy; Moll, Eugene J
    The dispersal of plants with particular attention to the roles birds play as dispersal agents was studied in the southwestern Cape, South Africa from 1983 to 1985. The research was organized as ten inter-related studies, each with an independent data base. Each chapter focused on a different scale of plant dispersal processes ranging from regional assemblages of plant species to individual species. At the largest scale, the seven vegetation types commonly occurring in the southwestern Cape were examined for incidence of vertebrate-dispersed plants. Coastal Thicket and Afromontane Forest were found to be the richest in these species. The colonization of vertebrate-dispersed plants was examined in an artificially cleared area of Mountain Fynbos vegetation. Enhanced densities of vertebrate-dispersed species were found in areas where perches had been provided. The seasonal availability of vertebrate-dispersed species was found to be most continuous in Coastal Thicket vegetation. Fruit displays of vertebrate-dispersed indigenous plants were found to vary from those that were sporadic and inconspicuous, to those that were conspicuous and predictable, whereas those of alien plants were usually large and conspicuous. Avian use of these fleshy fruits in Coastal Thicket was examined and found to be proportional to their availability. A study of fruit presentation in relation to leaf number and stem thickness suggested that sessile, stem attached fruits have fewer local leaves at time of ripening than fruits which are presented in panicles. This may enhance accessibility and conspicuousness of stem attached fruits for dispersal by birds. Four autecological studies tested certain predictions arising from models developed to describe fruit/frugivore interactions. The dispersal of the alien Acacia cyclops seeds by the indigenous Black Korhaan Eupodotis afra suggested that successful fruit/frugivore relationships are not necessarily the product of reciprocal evolution. The study on Chrysanthemoides monilifera found that efficient dispersal systems are not limited to plants producing small quantities of lipid-rich fruits and to dispersal by obligate frugivores. The abiotic dispersal of Quercus robur was found to be efficient in relation to vertebrate-dispersal. The study on Protasparagus aethiopicus found that the morphology of fleshy fruits may also reflect attempts to overcome the effects of non-dispersing seed predators. 1It is concluded that a gradient from a predictable to unpredictable fruit availability provides a better basis for studying fruit/frugivore interactions than the coevolutionary models. previously presented.
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    A Bayesian state-space model for mixed-stock migrations, with application to Northeast Atlantic mackerel Scomber scombrus
    (National Inquiry Services Centre (NISC), 2007) Cunningham, Carryn L; Reid, D G; McAllister, M K; Kirkwood, G P; Darby, C D
    Management of fisheries that exploit mixed-stock populations relies on assumptions made concerning stock structure and mixing in different areas. To address the problems of accounting for uncertainty when formulating scientific advice for the management of highly migratory fish stocks, management decisions need to be based upon assessment models that represent plausible alternative hypotheses for stock structure and migration patterns of the exploited populations. We present a multi-stock, multi-fleet, multi-area, seasonally structured Bayesian state-space model in which different stocks spawn in spatially different areas and the mixing of these stocks is explicitly accounted for in the absence of sufficient tagging data with which to estimate migration rates. The model is applied to the Northeast Atlantic mackerel Scomber scombrus population, accounting for the annual spawning-feeding-overwintering migration patterns of the three spawning components, together with uncertainty in the extent to which the southern component migrates north to feed and overwinter, and consequently the extent to which it mixes with the other components and is subject to exploitation. The model allows the effect of exploitation on the individual components to be assessed, and the results suggest that the fishing mortality of southern spawning adults was insensitive to the extent to which they migrated north.
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    Bodies across borders : embodiment and experiences of migration for southern African international students at the University of Cape Town
    (2010) Moll, Tessa; Bennett, Jane
    In context of increasing global migration and its correlation to heightened tensions around the meaning of a "foreign" body, this research questions the experiences of bodies crossing borders into the social and historical space of Cape Town, South Africa. Grounded in theories of surveillance, embodiment, and feminist geography of fear of crime, the study employed a feminist methodology using qualitative group interviews with international students from the Southern African Development Community at the University of Cape Town. The transcribed data was analysed through the participants' use of discourses and their descriptions of experiences. Questions arose around the meaning of surveillance and notions of respectability in transition. Furthermore, participants navigate amid new spaces of fear and insecurity in relation to their subjectivities, particularly as "foreigners". The research suggests that fear becomes a fundamental attribute of bodies in migration through which individuals mitigate through "passing" subverting expressions of embodied nationalities, knowledge gathering of the local terrain, among others. The challenges and techniques to overcome these fears become part of a process to re-establish the "self" in a foreign context.
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    Conceptualizing the impacts of dual practice on the retention of public sector specialists - evidence from South Africa
    (2015-01-19) Ashmore, John; Gilson, Lucy
    Abstract Background ‘Dual practice’, or multiple job holding, generally involves public sector-based health workers taking additional work in the private sector. This form of the practice is purported to help retain public health care workers in low and middle-income countries’ public sectors through additional wage incentives. There has been little conceptual or empirical development of the relationship between dual practice and retention. Methods This article helps begin to fill this gap, drawing on empirical evidence from a qualitative study focusing on South African specialists. Fifty-one repeat, in-depth interviews were carried out with 28 doctors (predominantly specialists) with more than one job, in one public and one private urban hospital. Results Findings suggest dual practice can impact both positively and negatively on specialists’ intention to stay in the public sector. This is through multiple conceptual channels including those previously identified in the literature such as dual practice acting as a ‘stepping stone’ to private practice by reducing migration costs. Dual practice can also lead specialists to re-evaluate how they compare public and private jobs, and to overworking which can expedite decisions on whether to stay in the public sector or leave. Numerous respondents undertook dual practice without official permission. Conclusions The idea that dual practice helps retain public specialists in South Africa may be overstated. Yet banning the practice may be ineffective, given many undertake it without permission in any case. Regulation should be better enforced to ensure dual practice is not abused. The conceptual framework developed in this article could form a basis for further qualitative and quantitative inquiry.
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    The impact of illness and death on migration back to the Eastern Cape.
    (2008) Neves, David
    This paper examines the impact of HIV/AIDS related morbidity and mortality on return migration to the rural Eastern Cape. The paper begins by discussing the interrelation between population mobility and HIV and grounds these dynamics within the structural context of underdevelopment in a former homeland region of South Africa. The changing migratory regimes of the post-apartheid era, which have seen formal male labour migration supplanted by increasingly informal and feminized migratory trajectories, between both rural-urban and intra-rural locales, are described. Five case studies are presented, and the multiplicity of factors associated with rural return migration in the face of HIV/AIDS related illness delineated. The empirical material suggests illness-induced back migration is driven not only by the search for health and succour, but also by complex amalgams of shifting entitlement and obligation. Understanding the dynamics of rural return requires attention not only to the highly variegated position that urban returnees potentially assume within receiving households, but also the effects of their return on these households. Even within the relatively limited number of case studies presented, rural returnees are variously subjects or dispensers of care, either relatively peripheral or crucially central members of receiving households. The evidence simply belies any notion of unidirectional rural return, driven by a universal set of imperatives in response to illness.
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    Impact of Migration on Welfare of Migrant Sending Households in Selected Rural Areas of Zimbabwe
    (2021) Zvendiya, Ronald; Mlatsheni, Cecil
    The New Economics of Labour Migration theory, recognizes family participation in migration decisions as a strategy for moving out of poverty, thus signaling potential welfare linkages between migrants and family members left behind. The current study investigates the impact of migration on welfare of migrant sending households in rural Zimbabwe using cross-sectional data. The study employed a Counterfactual approach and utilized two stage Heckman selection model to control for selection bias. The results indicated that on average, migration impacts household welfare positively but the welfare gains are not evenly distributed among households. Overall, the welfare of households with migrants would have been 5 percentage points lower if migrant members had stayed at home. Based on the findings, the main recommendation is that policy makers need to consider the removal of de facto and de jure migration restrictions.
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    Migration: Analysis of the NIDS Wave 1 Dataset
    (2017-06-06) Posel, Dorrit
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    The T-box transcription factor, TBX3, is sufficient to promote melanoma formation and invasion
    (BioMed Central Ltd, 2013) Peres, Jade; Prince, Sharon
    The T-box transcription factor, TBX3, is overexpressed in several cancers and has been proposed as a chemotherapeutic target. Several lines of evidence suggest that TBX3 may be a key contributor to malignant melanoma, a highly aggressive and intractable disease. Using in vitro and in vivo assays we demonstrate here for the first time that overexpressing TBX3 in non-tumourigenic early stage melanoma cells is sufficient to promote tumour formation and invasion. Furthermore, we show that TBX3 may play an important role as a reciprocal switch between substrate dependent cell proliferation and tumour invasion.
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    The Links Between Migration, Poverty and Health: Evidence From Khayelitsha and Mitchell's Plain
    (CSSR and SALDRU, 2015-05-28) Ndegwa, David; Horner, Dudley; Esau, Faldie
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    The reimagined migrant portrait - exploring the lives of Chinese and Taiwanese minorities living in South Africa
    (2019) Hsu, Tzu Ting; Wasserman, Hermanus
    This multimedia project explores the lives of Chinese and Taiwanese migrants living in South Africa and how language, culture, community and marginalisation have come to shape their identities and to visually represent them in a way that is not prevalent in mainstream media. It uses two visual mediums – photography and video interviews – to understand these migrants’ experiences, how they perceive themselves and how they think society perceives them. Data analysis consisted of a process of coding the video interviews and structural analysis of the visuals. Rising worldwide migration has simultaneously increased the spread of diasporic communities. China’s positionality as an economic powerhouse and the influx of East Asian migrants to South Africa in recent years has shone a light on this minority population group. However, much of what is known about them tends to be through forms of mass media which perpetuates stereotypical representations. This paper draws on various literature including acculturation, diasporic communities, representation, languaging and xenophobia to explore the lives of East Asian migrants living in South Africa and search for more empowered forms of representation.