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Now showing items 1310-1329 of 2172
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A multivariate test for three-factor Interaction in 3 - way contingency table under the multiplicative model
(Scientific Research Publishing Inc, 2014-06-16)Abstract Two test statistics that have been commonly used in analysing interactions in contingency table are the Pearson’s Chi-square statistic, χ2, and likelihood ratio test statistic, G2. Both test statistics, in tables ... -
My initial negative attitude toward problem-based learning later motivated my learning
(University of Botswana, www.ub.ac.bw, 2017-12-12)Problem-based learning (PBL) is reported to be an effective student-centered approach to learning that empowers the students with critical thinking, problem-solving, interpersonal relations, collaboration, creativity, and ... -
Mycoflora and natural occurrence of aflatoxins and fumonisin B1 in cassava and yam chips from Benin, West Africa
(Elsevier B.V. www.elsevier.com/locate/ijfoodmicro, 2008)The presence of fungi, aflatoxins and fumonisin B1 in cassava and yam chips (during 28 processing and storage) were evaluated during two consecutive seasons in two agroecological zones of Benin (Northern Guinea Savannah, ... -
Nanoindentation measurements of the mechanical properties of polycrystalline Au and Ag thin films on silicon substrates: Effects of grain size and film thickness
(Elsevier, 2006)This paper presents the results of nanoindentation experimental studies of the contact-induced deformation in Au and Ag thin films. The paper examines the effects of film thickness and substrate deformation restraint on ... -
Nasal retention of noun prefixes of classes 9/10 in Bantu languages: a case study from Setswana, Kiswahili and Shisukuma
(Journal of the Linguistics Association of Southern African Development Community Universities, journals.ub.bw/index.php/lasu, 2016-07-28)The proto-forms of the prefixes of classes 9/10 in Bantu languages have invariably been represented as *n-/*n- (Meeussen 1967: 97) and *ny-/*ny- (Guthrie 1971). Some scholars have proposed other forms, especially for Cl.10. ... -
National policies on pregnancy in education systems in Sub-Saharan Africa: the case of Botswana
(Taylor & Francis, http://www.tandf.co.uk/journals, 2002)The article critiques pregnancy policies in the education systems in sub-Saharan Africa. Policies discussed are divided into expulsion, re-entry and continuation policies. Arguing from the standpoint of theories of oppression, ... -
National policies on pregnancy in education systems in sub-Saharan Africa: the case of Botswana
(Routledge, http://www.informaworld.com, 2002-03)The article critiques pregnancy policies in the education systems in sub-Saharan Africa. Policies discussed are divided into expulsion, re-entry and continuation policies. Arguing from the standpoint of theories of oppression, ... -
Natural attenuation of mining pollutants in the transboundary Save River
(Elsevier Science Ltd, http://www.elsevier.com/locate/pce, 2011)The objective of the study was to investigate the role played by the natural environment in protecting the transboundary Save River from the impacts of metals derived from phosphate mining at Dorowa. The study is a follow ... -
Natural pigments as photosensitizers for dye-sensitized solar cells with TiO2 thin films
(Gazi University, https://www.ijrer.org/ijrer/index.php/ijrer, 2015)Dye-sensitized solar cells (DSSCs) were fabricated using four natural dyes extracted from the leaves of lemon (Citrus limon) and morula (Sclerocarya birrea) and flowers of bougainvillea (Bougainvillea glabra). Optical ... -
Natural radioactivity in the soil samples of Botswana
(Elsevier, www.elsevier.com/locate/radmeas, 2008)Studies on concentrations of primordial radionuclides in soil samples of Botswana were carried out. Measurements were made by gamma spectrometry employing a 41% relative efficiency HPGe detector. The activity of 226Ra ... -
Natural resources accounting: A tool for water resources management in Botswana
(Elsevier, http://www.elsevier.com/wps/find/journaldescription.cws_home/413/description#description, 2007)Natural Resource Accounting (NRA) has become an important environmental/natural resources management tool in recent years. It provides information on stocks of a resource available at a particular point in time and what ... -
The nature and origin of sex-related euphemisms in Setswana
(University of Botswana, Department of English, http://www.ub.bw, 2008)The aim of this study is to investigate sex-related euphemisms in Setswana. Although sex matters, as embarrassing phenomena, are not usually talked about in Setswana communities, they have recently been brought to the open ... -
Nebulous labour relations in Zimbabwe’s rural local authorities
(Uts ePress, https://epress.lib.uts.edu.au/, 2013)Executive turnover can have far-reaching consequences on a local authority’s development policies, programs and commitments. This paper examines nebulous labour-related problems in Zimbabwe’s Rural District Councils (RDCs). ... -
The need to assess effect of aggregates on performance of concrete in Botswana
(Faculty of Engineering and Technology, University of Botswana, www.ub.bw, 2011-04)Concrete is the widely used construction material worldwide. Therefore, for structural safety as well as to provide economic design, it is essential to understand well, its performance. Whilst in most developed countries ... -
Negotiating meaning through the labyrinthine meanderings of periodic and cumulative english sentences
(University of Botswana, www.ub.ac.bw, 2017-09-14)When we acquire fluency in the mother tongue, or when we achieve it in another language, in both cases including fluency in grammatical and communicative competence, we are able to construct sentences with a rich variety ... -
The Neoproterozoic Mwashya–Kansuki sedimentary rock succession in the central African Copperbelt, its Cu–Co mineralisation, and regional correlations
(Elsevier www.elsevier.com/locate/gr, 2007)Rocks of the Neoproterozoic Mwashya Subgroup (former Upper Mwashya) form the uppermost sedimentary unit of the Roan Group. Based on new field and drill hole observations, the Mwashya is subdivided into three formations: ... -
A Netnographic Analysis of Online Reviews of Restaurant Service in Botswana
(University of Botswana, www.ub.ac.bw, 2018-11-28)This paper re-visits the notion of restaurant service performance in Botswana. The primary point of departure from Manwa’s work is that this paper employs Kozinets’ netnographic procedure to achieve its main objective, of ... -
Neutral polyfluoroalkyl substances in the global Atmosphere
(The Royal Society of Chemistry, http://pubs.rsc.org/en/journals/journalissues/em#!recentarticles&all, 2014)Concentrations of neutral per- and polyfluoroalkyl substances (nPFAS) in the atmosphere are of interest because nPFAS are highly mobile percursors for perfluoroalkyl acids. Two calibration studies in Ontario, Canada and ... -
A new and innovative look at anti-insulation behaviour in building energy consumption
(Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S0378778808000923, 2008)This paper presents the findings of a case study with building simulation using EnergyPlus dynamic thermal simulation software, in which wall insulation was varied together with cooling set-point temperature in a hot and ... -
New developments in the national examination system in Botswana
(National Council on Measurement in Education. http://www3.interscience.wiley.com, 1999-12)The study briefly looks at the new developments in the national examination system in Botswana. With this new system, the government opted for a criterion-referenced testing (CRT) model for primary and junior secondary ...