Search results for "Saharan Africa"
showing 10 items of 62 documents
Evolutionary relationships, biogeography and morphological characters of Glinus (Molluginaceae), with special emphasis on the genus composition in Su…
2021
Glinus is a small genus of Molluginaceae with 8–10 species mostly distributed in the tropics of the World. Its composition and evolutionary relationships were poorly studied. A new molecular phylogeny constructed here using nuclear (ITS) and chloroplast (rbcL, trnK-matK) markers confirmed the monophyly of the genus. Based on ITS analysis, the following well-supported lineages are present within Glinus: the G. bainesii lineage is recovered as sister to the remainder of the genus followed by G. oppositifolius. Three other clades are: G. hirtus with G. orygioides; G. radiatus and G. lotoides; the latter is represented by a sample from North America, and G. zambesiacus as sister to G. setifloru…
Long-term mineral fertiliser use and maize residue incorporation do not compensate for carbon and nutrient losses from a Ferralsol under continuous m…
2015
9 pages; International audience; It has been repeatedly argued that mineral fertiliser application combined with in situ retention of crop residue biomass can sustain long-term productivity of West African soils. Using 20-year experimental data from southern Togo, a biannual rainfall area, we analysed the effect of two rates of mineral NPK fertiliser application to maize–cotton rotation on the long-term dynamics of soil C and nutrient contents, as compared with two control treatments. Mineral fertiliser treatments consisted of application to both maize (first season) and cotton (second season) the research-recommended NPK rates (Fertiliser-RR) and 1.5 times these rates (Fertiliser-1.5 RR). …
Subnational mapping of HIV incidence and mortality among individuals aged 15-49 years in sub-Saharan Africa, 2000-18: a modelling study
2021
Background. High-resolution estimates of HIV burden across space and time provide an important tool for tracking and monitoring the progress of prevention and control efforts and assist with improving the precision and efficiency of targeting efforts. We aimed to assess HIV incidence and HIV mortality for all second-level administrative units across sub-Saharan Africa. Methods. In this modelling study, we developed a framework that used the geographically specific HIV prevalence data collected in seroprevalence surveys and antenatal care clinics to train a model that estimates HIV incidence and mortality among individuals aged 15–49 years. We used a model-based geostatistical framework to e…
Disparités sociales en éducation en Afrique sub-saharienne : Genre, localisation géographique et revenu du ménage
2006
06017; Dans ce texte, nous poursuivons deux objectifs complémentaires : le premier consiste à offrir une description de l'ampleur des disparités sociales qui existent dans les systèmes éducatifs des pays de l'Afrique au Sud du Sahara principalement dans la période actuelle mais aussi en lui donnant une perspective temporelle; le second cherche à identifier certains des facteurs qui peuvent rendre compte des disparités constatées ou des actions qui ont visé à les réduire.
Cost and Financing of Education and its Impact on Coverage and Quality of Services and Efficiency and Equity in Sub-Saharan African Countries
2007
07052; In this chapter, we take mostly an international comparative perspective limited to Sub-Saharan African countries. First, we analyse first the macro picture and the public finance dimension, analyzing the systemic choices made in the distribution of public resources across levels and types of education. Second, we move to unit cost estimates and the factors accounting for their level in a given country and to their variation across the different countries of the region. Finally, we examine the implication of the choices made in the financial dimension upon outcomes (coverage and quality of educationl services), birnging issues of efficiency and equity into the analysis.
La Place de l'Etat en Afrique selon la Banque mondiale : De l'ajustement structurel à l'ajustement social. Les limites d'une politique néo-libérale «…
2007
07003 - 17 p.; Les Documents de travail de l'IREDU 2007/3; Cette contribution a pour objectif d'analyser le changement de discours que porte la Banque mondiale sur la réforme de l'État en Afrique, et ce dans la sphère éducative. Après examen, il ressort que malgré les nouveaux discours de « lutte contre la pauvreté », la politique néo-libérale de la Banque mondiale accorde à l'État une place toujours aussi mineure dans la conception et l'exécution des politiques éducatives. On aurait pu croire à la réalité d'une évolution de la politique d'ajustement structurel stricte vers une politique d'ajustement social où des acquis fondamentaux seraient pris en compte concernant le domaine social. Il …
: Evolution of the examination at the end of college in sub-Saharan Africa
2004
The evolution of schooling in the developing systems in sub-Saharan Africa has brought a sizeable new population into the colleges. Unfortunately, the scarcity of resources and the need to pursue development of basic education prevents maintaining this population in the lycees. Thus the examination at the end of college becomes the focus of very stressful management of different currents and finds itself divided about aims which are not easy to reconcile. Original solutions can be found, as is the case in Mauretania, while the combination of better-known solutions may allow this examination to deal with these contradictions.
Climate change engenders a better Early Warning System development across Sub-Saharan Africa: The malaria case
2022
It is expected that diseases are likely to spread to newer areas, and high-income countries may experience some illnesses that may have been restricted to low or middle-income countries. In addition, following the Intergovernmental Panel on Climate Change, the present study noted that climate change is likely to have many effects on the spatial and temporal distribution of malaria in many Sub-Saharan African countries. This study examines climate change effects on the geographical distribution of malaria occurrence and how extreme climatic events may perhaps be determining factors in the range of vectors for human diseases in SSA in the nearest future. Here, the study appraisals the symbiot…
La participación en asociaciones de los inmigrantes africanos. Vías de interpretación del distanciamiento asociativo
2013
This article is focused on the reasons for non-participation of African population in immigrant associations. To understand this question, we conducted semi-structured interviews with persons who decided consciously no to participate in associations and organizations that worked with immigrants. All this work was developed in Catalonia, Valencia and Navarra, from a multilocal research perspective. We interpret the associative detachment, as a voluntary distancing based on the absence of information, lack of time, disenchantment, proprietorship activism, passively waiting, or because they are the only user population. Nevertheless, there are other factors of greater significance, as the poli…
Literacy and literacy practices: Plurilingual connected migrants and emerging literacy
2021
Abstract Recent migration towards Europe is characterized by the massive presence of adults whose educational paths have been interrupted and who are thus developing literacy for the first time in a new language. A literacy test elaborated at the University of Palermo, Italy, showed that, on a sample of 774 migrants, about 30 percent could not read and/or write short words. This test assessed the learners’ abilities to read and write, whether in the Roman alphabet or in other writing systems, and whether in Italian or in other languages of learners’ repertoires. These learners with emergent literacy mostly came from sub-Saharan Africa, an area characterized by diverse forms of multilinguali…