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The intention of this article is to prompt a serious interest in indigenous African education in order to forge a new future that builds on (a) the positive aspects of our past and (b) carefully selected and imported ideas and methods. To this end, our discussion will focus on the richness of indigenous education. Indigenous African learning plays a vital role in the transmission of values that Africans consider to be essential in understanding and experiencing the fullness of life. Because...
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This book consists of papers presented at a seminar for senior policy-makers held in Zimbabwe from May 7-11, 1990. The seminar is concerned mainly with distance education as an alternative to secondary education and current practices in teacher training in Africa. It covers world trends in distance education at the secondary level, current use of and effectiveness of distance education systems in Africa, and alternative options for improving distance education systems. The greatest...
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Abstract : Two groups of guinea pigs were exposed to an acoustical field of 125 dBSPL one kilohertz for three hours. One of these groups breathed high barometric oxygen at two atmospheres for three times prior to exposure and on 21 continuous days following exposure. They breathed this pure oxygen for one half hour each time. The other group was control and was not given pure oxygen. The indexes used to judge the results we induced potential hearing threshold of the hearing regions of the...
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This volume examines the major trends in linguistics from the beginning of the 20th century to the early 1990s. It traces the developments from system-sentence analysis to research in text-linguistics and spoken discourse analysis. It looks in particular at the contributions of the philosophers of language, ethnographers of communication, social dialectologists, ethnomethodologists, and students of artificial intelligence to the domains of discourse analysis, language acquisition research,...
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The Tanganyika-Rukwa-Malawi (TRM) rift segment in western Tanzania is a key sector for understanding the opening dynamics of the East African rift system (EARS). In an oblique opening model, it is considered as a dextral transfer fault zone that accommodates the general opening of the EARS in an NW–SE direction. In an orthogonal opening model, it accommodates pure dip-slip normal faulting with extension orthogonal to the rift segments and a general E–W extension for the entire EARS. The...
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The sickness absence records of employees in a University Teaching Hospital in Nigeria were examined over a period of three years. The health records of the hospital workers showed a preponderance of junior and intermediate workers. An overall proportion of absentee workers was 15.8% with an average of 3 spells of sickness per year per absentee while the duration of sickness per absentee was 5.6 days per year. The younger employees less than 35 years of age and those with short duration of...
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In Monze District, Zambia, the population must face the drought of 1991-92, corridor disease (tick-borne East Coast fever), and AIDS. The Ministry of Agriculture in Lusaka acted quick in securing available world stocks in maize which are being targeted to households most at risk of starvation. Food and other interventions are also being targeted to AIDS families to help avoid family breakup and economic ruin. The tradition is that a dead man's relatives may seize belongings, even cooking...
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Several large earthquakes occurred in the south of the Sudan in May and July 1990. The focal mechanism solution of the main shock (May 20, 1990), one of the largest events in Africa ever recorded, shows left-lateral strike-slip faulting. One of the nodal planes is parallel to the Aswa fault zone, a major Proterozoic tectonic feature. A line connecting the epicenters of the main events of May and July also strikes in the same direction. Field observations and satellite imagery also indicate...
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Very-broad-band seismic waveforms were modelled to derive the moment tensor, the source time function and the depth of the May 20, 1990 Sudan earthquake. Long-period body waves, surface waves and broad-band displacement, recorded by the MedNet regional network, were merged with digital data from global seismic networks, to compare fault geometries obtained by different methods and assess associated uncertainties. Our analysis indicates that the May 20 earthquake had a seismic moment of 5.3 ×...
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In this paper, an outline is presented of a paradoxical feature of past trends in the demand for and supply of schooling to the Black population of South Africa. The paradox is that demand for Black schooling increased despite disincentives to do so under the apartheid policy. As background, a brief historical review of the provision of schooling to Blacks is also presented.
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The Dominion Group is a volcano-sedimentary sequence of Archeaan age underlying the Witwatersrand Supergroup in northern South Africa. New radiometric dating and recent petrologic studies make a review appropriate at this time. This review of the Group highlights its potential importance in understanding the tectonic setting and derital source of the economically important Witwatersrand Supergroup. The sequence consists of a basal clastic sedimentary unit, with conglomerate containing placer...
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The Cd, Cu, Fe, Ni, Pb, V and Zn levels of surface waters and industrial effluents in the Niger Delta area of Nigeria were determined. The concentrations of most metals in these surface waters were generally lower than international levels in freshwaters and international drinking water standards. With the exception of Pb, metal levels in petroleum effluents were within the range found for European refineries. The level of Pb in these effluents could be due to its higher value in gasoline in...