Browsing by Title
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Batane, N.R.; Morrison, D.J.; Moosbrugger, J.C. (Elsevier, www.elsevier.com, NaN, 2010)[more][less]
Abstract: The axial–torsional cyclic deformation behavior of polycrystalline nickel was investigated by performing fully reversed plastic strain amplitude controlled fatigue experiments at effective plastic strain amplitudes ranging from 1×10−4 to 1×10−3. Experiments were accomplished under proportional and 90◦ out-of-phase nonproportional loading paths. Results indicate that loading path has very little effect on the cyclic response at the lower effective plastic strain amplitude. However, at the higher effective plastic strain amplitude, significant additional hardening is induced by the nonproportional loading path. Description: some symbols may not appear as in the original abstract. URI: http://hdl.handle.net/10311/847 Files in this item: 1
Batane_MSE_2010.pdf (613.9Kb) -
Batane, N.R.; Morrison, D.J.; Moosbrugger, J.C. (Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S135964620800064X, NaN, 2008)[more][less]
Abstract: Results are presented on the effects of biaxial straining on the cyclic stress–strain response of ultrafine grain nickel (grain size 260 nm) and conventional grain nickel (grain size 50 lm) over a range of effective plastic strain amplitudes from 1 10 4 to 1 10 3. Grain refinement causes an increase in saturation stress. For conventional grain nickel, non-proportional straining causes higher saturation stress than proportional straining; but the ultrafine grain material exhibits the opposite behavior. URI: http://hdl.handle.net/10311/662 Files in this item: 1
Batane_SM_2008.pdf (586.5Kb) -
Ahmad, J.; Bothata-Nareetsile, F.; Becker, C.A.L. (NRC Research Press, http://www.nrcresearchpress.com/loi/cjc, NaN, 2003)[more][less]
Abstract: Nine pairs of corresponding [CoI(CNR)3(PR3 ′ )2]X, [CoII(CNR)3(PR3 ′ )2]X2 complexes — where X = ClO4, BF4; CNR = CNCMe3, CNCHMe2, CNC6H11, CNCH2Ph; PR3′ = PPh3, P(C6H4Me-p)3, P(C6H4OMe-p)3 — have been studied using cyclic voltammetry in CH3CN solutions. All cycles are reversible, and E1/2 for the Co(I) complexes, initially oxidized, are within experimental error identical to E1/2 values for the corresponding Co(II) complexes, initially reduced. E1/2 values are strongly dependent on the triarylphosphine ligand, decreasing in the order PPh3 > > P(C6H4Me-p)3 > P(C6H4OMe-p)3, and weakly dependent on the alkylisocyanide ligand, decreasing in the order CNCH2Ph > CNCMe3 > CNC6H11 ≥ CNCHMe2. Solution ν(-N C) IR patterns reveal that the [CoI(CNR)3(PR3′)2]X complexes do not have regular trigonal bipyramidal coordination, their structure being determined by the particular CNR ligand, while the [CoII(CNR)3(PR3′)2]X2 complexes, specifically in CF3CH2OH, appear to have regular trigonal bipyramidal coordination. Description: Signs on the abstract may be different to the original document URI: http://hdl.handle.net/10311/1034 Files in this item: 1
Ahmad_CJC_2003.pdf (782.1Kb) -
Haron, M. (Journal of Muslim Minority Affairs; Carfax Publishing; Taylor & Francis; http://www.tandf.co.uk/journals/titles/13602004.asp, August NaN, 2005)[more][less]
Abstract: This paper provides a brief survey of the contemporary da'wah movements and Sufi orders (tariqah) that have redefined and reformulated some of the social institutions among the Muslim community in southern Africa. After a theoretical discussion of the definition of movements and orders, the paper provides a brief overview of Islam's presence in contemporary southern Africa. This is followed by a historical review of the various Sufi tariqahs and Muslim movements in the region, focusing on the Tabligh Jama'at at and including the Chistiyyah, Murabitun, Qadriyyah, Alawiyyah and Naqshbandi tariqahs. In the final section of the paper comparisons are made between the growth of da'wah movements and Sufi tariqahs and the reasons for their relative influences and successes are analysed. URI: http://hdl.handle.net/10311/34 Files in this item: 2
haron_jmma_2005.pdf (2.699Mb)license.txt (1.998Kb) -
Mnjama, N. (SAGE Publications, http://idv.sagepub.com/, NaN, 2006)[more][less]
Abstract: Discusses the problems associated with managing semi-current and non-current in many archival institutions in eastern and southern Africa. The article seeks to answer some basic questions such as: Why do archival institutions in the region have backlog accumulations? What is the level of awareness of the problems associated with backlog accumulations? What is the capacity of archives to handle records created by governments? What mechanisms need to be put in place to avoid backlog accumulations ever becoming a problem again in the region? Finally the article proposes a strategy for dealing with backlog accumulations. URI: http://hdl.handle.net/10311/600 Files in this item: 1
Mnjama_ID_2006.pdf (1.317Mb) -
Temtime, Z.T.; Chinyoka, S.V.; Shunda, J.P.W. (Emerald Group Publications, www.emeraldinsight.com, NaN, 2004)[more][less]
Abstract: There is a general consensus among public policy makers, academics and researchers that entrepreneurship is a vital route to economic advancement for both developed and developing economies. As a result, a host of small business assistance programs are conducted by public, private and nonprofit organizations. Although the need for intergrating these programs has always been a high priority on the national agenda for public policy and research in entrepreneurship, their implementation particularly in developing economies is characterized by fragmentation and lack of coordination. Small business assistance will be meaningful if they are designed in a holistic and systematic way and implemented with a view to achieve long term sustainable development. This paper offers a conceptual framework for designing an integrated model of small business assistance. The paper identifies the major characteristics of small firms and potential small business assistance programs, and presents a decision tree model that matches the characteristics of firms with appropriate assistance program(s). A case study of small business assistance programs in the Republic of Botswana was conducted to provide an empirical evidence of the need for an integrated design or model. Finally, conclusions, discussions and the implications of the model for policy makers, practitioners and further research are presented. URI: http://hdl.handle.net/10311/1059 Files in this item: 1
TEMTIME_JMD_2004.pdf (1.334Mb) -
Temtime, Z.T.; Chinyoka, S.V.; Shunda, J.P.W. (Journal of Management Development; Emerald Group Publishing Limited; www.emeraldinsight.com/0262-1711.htm, NaN, 2004)[more][less]
Abstract: There is a general consensus among public policy makers, academics and researchers that entrepreneurship is a vital route to economic advancement for both developed and developing economies. As a result, a host of small business assistance programs are conducted by public, private and nonprofit organizations. Although the need for integrating these programs has always been a high priority on the national agenda for public policy and research in entrepreneurship, their implementation particularly in developing economies is characterized by fragmentation and lack of coordination. Small business assistance will be meaningful if they are designed in a holistic and systematic way and implemented with a view to achieve long term sustainable development. This paper offers a conceptual framework for designing an integrated model of small business assistance. The paper identifies the major characteristics of small firms and potential small business assistance programs, and presents a decision tree model that matches the characteristics of firms with appropriate assistance program(s). A case study of small business assistance programs in the Republic of Botswana was conducted to provide an empirical evidence of the need for an integrated design or model. Finally, conclusions, discussions and the implications of the model for policy makers, practitioners and further research are presented. URI: http://hdl.handle.net/10311/12 Files in this item: 2
license.txt (1.998Kb)temtime_decision_tree.pdf (5.483Mb) -
Barei, G. (University of Botswana, Research and Development Unit/http://digital.lib.msu.edu/projects/africanjournals/browse.cfm?colid=12, NaN, 2000)[more][less]
Abstract: This article focuses on three districts of Botswana, namely Central District, Ngwaketse District and Kgatleng District. It argues that as a result of the role played by the institution of chieftainship in elections, certain voting paltems that are discussed in the conceptual framework can be associated with it. The extent to which chieftainship has influenced electoral outcomes varies from one area to another. URI: http://hdl.handle.net/10311/508 Files in this item: 1
Barei_PBJAS_2000.pdf (1.504Mb) -
Mpabanga, D. (Pula: Botswana Journal of African Studies, NaN, 2000)[more][less]
Abstract: This article attempts to analyse the trends and patterns relating to the past eight general elections in Botswana, from the pre-independence period in 1965 to 1999. Factors that have influenced elections in the last eight years will be discussed, and trends established for the same period. Data from various past election reports and analysis carried out by other researchers will be referred to in this article. The data used will be derived from; the total number of potential voters in Botswana; the number of electorate who registered for the elections and the number who actually voted. Percentages of the electorate who registered and actually voted, the ratio of electorate who voted to potential voters, and the ratio of voted to registered voters will be discussed. The electoral trend of percentage of voters by party and by number, and percentages of national assembly seats by political parties that contested in the last eight general elections will be studied. A summary and conclusions on these factors and lessons to be learned from the experiences of the past eight elections will be included. These experiences will be beneficial to all the political parties in the country, and the Botswana Democratic Party (BDP) in particular, which has won the 1999 general elections with an overwhelming victory. The BDP government and political parties should learn from the past experiences, and develop an improved and effective performance for the government. URI: http://hdl.handle.net/10311/906 Files in this item: 1
Mpabanga_PBJAS_2000.pdf (889.0Kb) -
Dikinya, O.; Hinz, C.; Aylmore, G. (Elsevier http://www.linkinghub.elsevier.com/retrieve/pii/S0016706108001365, NaN, 2008)[more][less]
Abstract: The dynamics of the process of self-filtration in soil columns have been evaluated for two soils with different structural cohesion (Balkuling agricultural soil and a mining residue) by carrying out experiments focusing on microscopic particle behaviour during filtration. Soil column experiments were set up to simultaneously measure changes in hydraulic gradients (ΔH/ΔL) along the columns and outflow particle sizes and concentrations during pressure leaching with solutions of 100, 10 and 1 mmol/L NaCl and deionised water. The lowest ionic strength has resulted in more reduced hydraulic conductivity and relatively more release of colloids associated with hydrodynamic shear and dispersion. Steady increases in hydraulic gradient (ΔH/ΔL) and corresponding decreases in relative saturated hydraulic conductivity (K/Ko) with time were observed for both soils and follow similar trends at all column depths. The most severe increases in ΔH/ΔL and decreases in K/Ko always occurred near the inlet to the columns and the decline gradually decreased along the column. The decrease in K/Ko and increase in ΔH/ΔL were clearly influenced by the size as well as the concentration of migrating particles in the porous medium. The finer mobile particles in the mining residue were clearly more readily self-filtered at the lower concentration than the larger Balkuling soil particles producing more rapid increases in ΔH/ΔL and decreases in K/Ko. This was attributable to more effective self-filtration and more pore clogging probably due to increased development of the diffuse double layer, swelling and dispersion within the soil matrix at these concentrations. URI: http://hdl.handle.net/10311/488 Files in this item: 1
Dikinya_Geoderma_2008.pdf (1.429Mb) -
Daka, P.S.; Obuseng, V.C.; Torto, N.; Huntsman-Mapila, P. (South African Water Research Commission http://www.wrc.org.za, NaN, 2006)[more][less]
Abstract: Deltamethrin concentrations were determined in 35 sediment samples collected from three different habitats: channel, lagoon and pool sites from Xakanaxa in the Okavango Delta, NW Botswana. The samples were Soxhlet-extracted in acetone to extract deltamethrin residues and subsequently cleaned-up with silica gel 60. The final determination was carried out with a gas chromatograph equipped with an electron capture detector (GC-ECD). The sample work-up and determination gave deltamethrin recoveries of 54 to 97%, and detection limits of 0.004 mg/kg dw. The concentration of deltamethrin residues in the sediment samples collected from the three sprayed areas in the Okavango delta ranged between 0.013 and 0.291 mg/kg dw, with the highest concentrations observed in samples obtained from the pool sites. Analysis of samples for organic matter content showed percentage total organic carbon (% TOC) ranging between 0.19% and 8.21%, with samples collected from the pool having the highest total organic carbon. The concentrations of deltamethrin residues and the % TOC in sediment samples showed a similar trend with the highest levels recorded in the pool samples. These data confirmed that a simple method based on GC-ECD, after Soxhlet extraction, was robust enough to enable quantification of deltamethrin in the sediments, because comparable results were obtained with a more sophisticated system consisting of a GC coupled to a mass spectrometer with a time of flight (TOF) analyser. URI: http://hdl.handle.net/10311/650 Files in this item: 1
Daka_WSA_2006.pdf (1.231Mb) -
Daka, P.S.; Obuseng, V.C.; Torto, N.; Huntsman-Mapila, P. (Water SA Pretoria; Water Research Commission; http://www.wrc.org.za/, October NaN, 2006)[more][less]
Abstract: Deltamethrin concentrations were determined in 35 sediment samples collected from three different habitats: channel, lagoon and pool sites from Xakanaxa in the Okavango Delta, NW Botswana. The samples were Soxhlet-extracted in acetone to extract deltamethrin residues and subsequently cleaned-up with silica gel 60. The final determination was carried out with a gas chromatograph equipped with an electron capture detector (GC-ECD). The sample work-up and determination gave deltamethrin recoveries of 54 to 97%, and detection limits of 0.004 mg/kg dw. The concentration of deltamethrin residues in the sediment samples collected from the three sprayed areas in the Okavango delta ranged between 0.013 and 0.291 mg/kg dw, with the highest concentrations observed in samples obtained from the pool sites. Analysis of samples for organic matter content showed percentage total organic carbon (% TOC) ranging between 0.19% and 8.21%, with samples collected from the pool having the highest total organic carbon. The concentrations of deltamethrin residues and the % TOC in sediment samples showed a similar trend with the highest levels recorded in the pool samples. These data confirmed that a simple method based on GC-ECD, after Soxhlet extraction, was robust enough to enable quantification of deltamethrin in the sediments, because comparable results were obtained with a more sophisticated system consisting of a GC coupled to a mass spectrometer with a time of flight (TOF) analyser. URI: http://hdl.handle.net/10311/140 Files in this item: 2
dakaetal.pdf (463.1Kb)license.txt (1.998Kb) -
Molomo, M.G. (Pula: Botswana Journal of African Studies, NaN, 2000)[more][less]
Abstract: This article outlines that the Constitution of Botswana provides for an executive presidency with extensive powers. Unlike other constitutions in the region where power is vested with the people, in Botswana it is vested with the President. While democratic procedures have not been flaunted in Botswana, in a situation where one political party dominates both the executive and the legislative branches of government, there is cause for concern. In this situation, the checks and balances provided for in the constitution are almost redundant. The declaration of the state of emergency and the granting of the Vice-President, Ian Khama, sabbatical leave by the President are examples where the President used his executive powers. This article concludes that given the wide-ranging executive powers that the President enjoys, there is a strong case for presidential elections. In that way, the president would be directly elected by the electorate and therefore directly accountable to them. URI: http://hdl.handle.net/10311/897 Files in this item: 1
Molomo_PBJAS_2000.pdf (1.063Mb) -
Moswela, B. (JEAPS, http://www.academicjournals.org/ijeaps, April 20, 2010)[more][less]
Abstract: This paper sought to unpack the extent of students’ democratic involvement in the teaching and learning processes. Data that were analyzed were obtained from 253 teachers and 194 students from 15 secondary schools in Botswana using a closed questionnaire consisting of 31 question items. Although the sample may not be representative of all the schools in the country (only 15 out of 233 schools were studied), the study concluded that the teaching and learning activities are largely pursued in democratic environments where teachers consult students on important classroom decisions. These efforts are, however, constrained by the disturbing levels of bullying in the classroom reported by the students. The democratic practices encouraged by the teachers, the study concluded, are consistent with what obtains at the national macro level. URI: http://hdl.handle.net/10311/1036 Files in this item: 1
Moswela_JEAPS_2010.pdf (92.21Kb) -
Jotia, A.L. (IJSRE, http://www.ijsre.com, October NaN, 2010)[more][less]
Abstract: This paper registers that there is a strong relationship between the prevailing global discourse on Education for Sustainable Development and Democracy in Education. As such, in order for any nation to be seen to be having a relevant and quality education, its education system should be seen to be addressing the principles of democracy in a more direct and robust way. The role of education in advancing the global dream of sustainable development-which of late is also being marshalled by Environmental Education, cannot be overemphasized. However, the paper contends that unless we begin to democratize education to give learners a voice and a sense of being partners and key stakeholders in the process of educating and or advancing the state’s socio-economic and political aspirations, the objectives of having sustainable development will remain an absolute nightmare. URI: http://hdl.handle.net/10311/977 Files in this item: 1
Jotia_IJSRE_2010.pdf (1.559Mb) -
Mokomane, Z.S. (Pula: Botswana Journal of African Studies, NaN, 2000)[more][less]
Abstract: In this anicle, data from a survey conducted in March 1999 by the University of Botswana Democracy Research Project in fifteen constituencies in Botswana is used to examine the relationship between party preference and selected demographic characteristics namely, age, sex, place of residence and education. Bivariate analysis results indicate the ruling BDP is the only party that enjoys higher support among women and among rural dwellers. Opposition parties, on the other hand, have a stronger suppon base among middle-aged people in the 29-49 years age bracket. The results also indicate that the level of education tends to have a major role in determining party preference. The last section of the article critically discusses these findings. URI: http://hdl.handle.net/10311/898 Files in this item: 1
Mokomane_PBJAS_2000.pdf (423.7Kb) -
Kamwendo, G. (Taylor & Francis, http://www.tandf.co.uk/journals, December NaN, 2010)[more][less]
Abstract: Malawi's Vision 2020 document, a national document that serves as a vehicle to project a future for a more developed, secure and democratically mature nation, laments the tendency of Malawians to denigrade local products and glorify all things foreign. Yet, paradoxically, the document does not address the important issue of promoting Malawi's indegenous languages. This silence can be interpreted as reflective of the population's inclination to ascribe greater value to forign culture. In Malawi, as in many other African countries, indigenous languages are not considered worthy as media of education, subjects of advanced study or critical vehicles for national development. They are still victim to a discrimination rooted in Africa's 500 plus years of European enslavement and colonialisation. Against the backdrop of the pursuit of an African Renaissance, this article looks at Malawi's language policies since independence in 1964, and at how, ten years short of an idyllic national vision, Malawi measures up on the important issue of language. URI: http://hdl.handle.net/10311/1041 Files in this item: 1
Kamwendo_IJARS_2010.pdf (1.393Mb) -
Youngman, F.; Maruatona, T. (Taylor & Francis, http://www.informaworld.com, July NaN, 1998)[more][less]
Abstract: This article addresses the question of whether extension workers can change their attitudes and practices in order to promote participatory rural development by considering the case of Botswana. It discusses the emergent participatory extension paradigm which uses techniques such as participatory rural appraisal (PRA). It describes the new community-based strategy for rural development in Botswana which includes the expectation that the extension services can be reorientated to facilitate increased community participation. Evidence is presented from research in 1995-96 which evaluated a pilot project involving PRAs undertaken by extension workers in four districts. The project sought to find out systematically whether PRA could enhance the ability of the extension services to undertake participatory rural development. The findings suggest that extension workers can develop through training the attitudinal predisposition necessary for adopting a more participatory approach to extension practice. However, there are institutional and contextual constraints which present obstacles to implementing participatory rural development. It is therefore not certain that the proposal to expand the use of PRA on a national scale will lead to the anticipated reorientation of the extension services. URI: http://hdl.handle.net/10311/1043 Files in this item: 1
Youngman_IJLE_1998.pdf (1.239Mb) -
Bernard, T.; Moetapele, N. (Elsevier http://www.doi:10.1016/j.jaridenv.2005.02.001, NaN, 2005)[more][less]
Abstract: For at least 200 years, Gomoti River people and their neighbours lived interactively with the Okavango flood pulse system, travelling widely in dugout canoes, practicing flood recession agriculture, fishing, hunting, and collecting wild foods. Today they are wetlanders without wetlands. A major outflow channel of the eastern Okavango Delta in the 1930s, the Gomoti River rarely flows these days. This paper explores the Gomoti’s demise, through the lenses first of science and second of Gomoti basin residents. Models developed over the past 20 years attribute the Gomoti’s drying to a complex set of bio-hydrologic processes and feedback loops that begin with sedimentation and conclude with channel switching, peat fires, and purging of toxic salts. Such models essentially omit the long history of human habitation and ecological interaction with the delta. Local people, on the other hand, tell of deliberate and systematic management of channels and floodplains, and they argue this management kept the river healthy and flowing. The picture is confounded by colonial era interventions and by Botswana government policies partitioning the Gomoti and restricting access to its headwaters. We conclude with a model combining meso-scale scientific explanation with micro-scale indigenous constructions as a context for new thinking about Okavango Delta resource management. URI: http://hdl.handle.net/10311/467 Files in this item: 1
Bernard_JAE_2005.pdf (2.556Mb) -
Mutula, S.; Kalusopa, T.; Moahi, K.; Wamukoya, J. (Emerald, NaN, 2006)[more][less]
Abstract: The purpose of this paper is to present findings of the design and implementation of an online information literacy module to first-year students at the University of Botswana. The study population consisted of 103 first-year students in the Department of Library and Information Studies. The population was divided into three equal groups of 34, 34 and 35, respectively, and each assigned a two-hour slot in the smart computer laboratory weekly for five consecutive weeks, to cover five information literacy topics online. Each group was assigned a tutor who received assignments online and graded them. Each topic was followed by questions for students to answer. Findings generally revealed that impartation of information literacy through the online mode could improve students’ competencies perhaps more than the face-to-face instruction approach. Furthermore, respondents preferred a blended instruction approach to a single learning mode. Contrary to expectations, online instruction might not minimise the copying of each other’s work among students to a great extent. Finally, online instruction does not necessarily reduce the amount of workload for staff and students, instead more time is needed to design and administer the course. The study was limited to first year students in the LIS department. A similar study involving all departments in the University of Botswana would shed more light on the level of information literacy competency among first year students from a cross-disciplinary perspective. The major outcome of the study is a re-usable online information literacy module. The study findings could also be useful in developing interventions to improve the design and delivery of online courses. Information literacy is a key challenge facing educators all over the world. Case studies such as this provide unique and comparative experiences that advance existing knowledge. For the University of Botswana, the study provides a first insight into the impact of elearning on information literacy competency since the implementation WebCT in 2002. URI: http://hdl.handle.net/10311/743 Files in this item: 1
Mutula_OIR_2006.pdf (1.931Mb)