Browsing by Title
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Ahmad, M.; Thangaraj, R.; Sathiaraj, T.S. (Springer, NaN, 2010)[more][less]
Abstract: Bulk samples of Sn10Sb20-xBixSe70 (0 B x B 8) chalcogenide alloys were prepared by the conventional melt quenching technique. Thin films were prepared on wellcleaned glass substrates by thermal evaporation technique. X-ray diffraction studies revealed that the alloys with x = 0 and 2 at.% of Bi were amorphous, whereas the alloys with x = 4, 6, 8 at.% were crystalline. The crystalline phases are identified as due to the formation of Bi2Se3 and BiSe2 phases. The microstructural and differential scanning calorimetric studies show the presence of these phases. A simple, straight forward procedure suggested by Swanepoel has been used to calculate the optical parameters, refractive index, and extinction coefficient. The optical gap for all the samples has been obtained from the Tauc plots. The variation in optical parameters for different Bi concentration has been explained on the basis of presence of defect states and the change in stoichiometry with the change in Bi concentration. Description: some symbols on the abstract may not appear as they are on the text. URI: http://hdl.handle.net/10311/752 Files in this item: 1
Heterogeneous crystallization.pdf (777.8Kb) -
Mbewe, D.D. (University of Botswana, NaN, 1998)[more][less]
Abstract: This paper describes the fundamental principles of production and accomplishment of High Definition Television (HDTV)-the television system of the future.It looks at the parameters of high definition television (HDTV),and shows how the values of these parameters can be derived from consideration of the performance of the viewer's visual system. Bandwidth requirements for various TV and HDTV systems are compared, and a number of optical fibre transmission techniques are considered for HDTV. In conclusion it is stated that the large bandwidths demands of uncompressed HDTV can be met by emerging technology in optical fibre transmission systems-in particular, wavelength division multiplexing (WDM). The paper is as a result of a project study conducted by the author and a colleage when he studied for his degree at Essex University,England. It makes no reference to the development and relevance of HDTV in the African context. URI: http://hdl.handle.net/10311/627 Files in this item: 1
Mbewe_bjt_1998.pdf (1.386Mb) -
Makgala, C.J. (Routledge, http://www.informaworld.com/smpp/title~db=all~content=t713429127, NaN, 2009)[more][less]
Abstract: Although economic, political, ethnic and religious factors have led to regionalisms and other divides, causing civil strife and civil wars in many countries, in Botswana the north-south divide existed for a long time merely as a political undercurrent. However, the turn of the twenty-first century saw the explosion of issues motivated by perceptions that it was the north-south divide that caused imbalance in the provision of infrastructural development and ethnic inequality. This article traces the north south divide in Botswana back to the early British colonial enterprise, when it was used for administrative convenience. Although in the post-colony the first president handled the situation pro-actively, his successors abandoned this approach. Regionalism ensued as personal ambitions for power and wealth took political and sometimes tribal dimensions. Ethnic identities were used to bolster campaigns despite the fact that identities in Botswana are multiple and multilayered rather than mutually exclusive. URI: http://hdl.handle.net/10311/590 Files in this item: 1
Makgala_JCAS_2009.pdf (4.772Mb) -
Makgala, C.J. (Routledge (Taylor and Francis group), http://www.routledge.com, NaN, 2009)[more][less]
Abstract: Although economic, political, ethnic and religious factors have led to regionalisms and other divides, causing civil strife and civil wars in many countries, in Botswana the north south divide existed for a long time merely as a political undercurrent. However, the turn of the twenty-first century saw the explosion of issues motivated by perceptions that it was the north south divide that caused imbalance in the provision of infrastructural development and ethnic inequality. This article traces the north south divide in Botswana back to the early British colonial enterprise, when it was used for administrative convenience. Although in the post-colony the first president handled the situation pro-actively, his successors abandoned this approach. Regionalism ensued as personal ambitions for power and wealth took political and sometimes tribal dimensions. Ethnic identities were used to bolster campaigns despite the fact that identities in Botswana are multiple and multilayered rather than mutually exclusive. URI: http://hdl.handle.net/10311/553 Files in this item: 1
Makgala_JCAS_2009.pdf (1.639Mb) -
Ngwenya, B.N.; Kgathi, D.L. (Elsevier Ltd; www.elsevier.com/locate/pce, NaN, 2006)[more][less]
Abstract: This case study investigates access to potable water in HIV/AIDS related home-based care households in five rural communities in Ngamiland, Botswana. Primary data collected from five villages, consisted of two parts. The first survey collected household data on demographic and rural livelihood features and impacts of HIV/AIDS. A total of 129 households were selected using a two-stage stratified random sampling method. In the second survey, a total of 39 family primary and community care givers of continuously ill, bed-ridden or non-bed-ridden HIV/AIDS patients were interviewed. A detailed questionnaire, with closed and open-ended questions, was used to collect household data. In addition to using the questionnaire, data was also collected through participant observation, informal interviews and secondary sources. The study revealed that there are several sources of water for communities in Ngamiland such as off-plot, outdoor (communal) and on-plot outdoor and/or indoor (private) water connections, as well as other sources such as bowsed water, well-points, boreholes and open perennial/ephemeral water from river channels and pans. There was a serious problem unreliable water supply caused by, among other things, the breakdown of diesel-powered water pumps, high frequency of HIV/AIDS related absenteeism, and the failure of timely delivery of diesel fuel. Some villages experienced chronic supply disruptions while others experienced seasonal or occasional water shortages. Strategies for coping with unreliability of water supply included economizing on water, reserve storage, buying water, and collection from river/dug wells or other alternative sources such as rain harvesting tanks in government institutions. The unreliability of water supply resulted in an increase in the use of water of poor quality and other practices of poor hygiene as well as a high opportunity cost of water collection. In such instances, bathing of patients was cut from twice daily to once or not at all. Depending on the severity of HIV/AIDS related symptoms, e.g. diarrhoea, 20-80 additional litres of water could be required daily. The case study demonstrates that, at individual level, access to water is an integral element of the patient's holistic healing process and psychosocial well being. At household and community levels, access to sufficient supplies of potable water when and where it is needed is central to mitigation of HIV/AIDS impacts. Access to water should therefore not be treated strictly as an economic good due to its importance as a basic human need, a social good and indeed a human right. URI: http://hdl.handle.net/10311/172 Files in this item: 2
license.txt (1.998Kb)ngwenya_kgathi_PCE_06.pdf (4.416Mb) -
Mogobe, K.D.; Seboni, N.; Brown, M.S.; Ntsayagae, E.; Sebego, M.; Sabone, M. (Elsevier Ltd, http://www.elsevier.com/locate/microc, NaN, 2007)[more][less]
Abstract: This article represents a case study of one university faculty’s efforts to fight the threat of HIV/AIDS to their student body. This case study reviews the early stages of faculty endeavors beginning with the development of an HIV/AIDS course and continuing through evaluation of the success and failures of the course, as well as current refinements now being made. Because the problem of HIV/AIDS on campus is a common one throughout sub-Saharan Africa, the authors hope that this case study of one faculty’s approach may be helpful to those facing the same challenge. URI: http://hdl.handle.net/10311/972 Files in this item: 1
Mogobe_JANAC_2007.pdf (1.034Mb) -
Mogobe, K.D.; Seboni, N.; Brown, M.S.; Ntsayagae, E.; Sebego, M.; Sabone, M. (Association of Nurses in AIDS Care. http://www.elsevier.com/wps/find/journaldescription.cws_home/704632/description#description, NaN, 2007)[more][less]
Abstract: Botswana currently has one of the highest HIVpositive prevalence rates in the world. University students are an important group seriously affected by this pandemic. They represent one of the country’s richest resources for the future, and faculty at University of Botswana believe there is a responsibility to educate them in a way that helps them preserve their health and vitality. This article represents a case study of one university faculty’s efforts to fight the threat of HIV/AIDS to their student body. This case study reviews the early stages of faculty endeavors beginning with the development of an HIV/AIDS course and continuing through evaluation of the success and failures of the course, as well as current refinements now being made. Because the problem of HIV/AIDS on campus is a common one throughout sub-Saharan Africa, the authors hope that this case study of one faculty’s approach may be helpful to those facing the same challenge. URI: http://hdl.handle.net/10311/548 Files in this item: 1
HIV AIDS education.pdf (1.139Mb) -
Ngwenya, B.N.; Mosepele, K. (Elsevier www.elsevier.com/locate/pce, NaN, 2007)[more][less]
Abstract: Generally, rural households pursue all year round natural and non-natural resource-based livelihood systems to diversify these options in order to cope with risks emanating from a range of shocks and stressors. Artisanal fishing in the Delta is not only a major livelihood option but also a source of food security. This paper is based on analysis of primary data collected from a survey of 248 subsistence fishers’ households through simple random sampling in 22 villages in the Delta. The overall objectives of the survey were to assess the general prevalence of HIV/AIDS in the Ngamiland district of Botswana, to investigate potential effects of AIDS-related stressors, particularly chronic illness on artisanal fishing activities, and to assess implications towards food security. Results from this study indicate that HIV prevalence rates for pregnant women attending antenatal clinics in the Delta are approximately 30% and are related to factors such as marriage, education, and employment. Despite this relatively high prevalence percentage, most of the affected households do not have adequate access to HIV/AIDS support facilities. Support services are provided on the basis of population size and/or status of the settlement (i.e. urban, urban village, rural or remote). Therefore, since about 50% of the Delta’s population lives in settlements of less than 500 people, they receive health services indirectly through major population centres whose capacity to deliver timely HIV/AIDS services is limited. This disproportionate access to HIV/AIDS services disadvantages the majority of fishing communities in the Delta, and may affect their ability to fish. Moreover, about 53% of sampled households had cared for a continuously ill person/s (CIP’s) in the last 5 years, out of which approximately 29% felt that this seriously impacted fishing activities. These serious impacts included sale of family assets, depletion of savings, and switching or abandoning fishing activities. Subsequently, household food security is seriously affected because fish provides a significant proportion of food to CIP households where approximately 55% of households get their food from fish products. During food shortages, CIP households resorted to a hierarchy of strategies which included cutting down on meals or reducing meal portions, looking for paid work, gathering wild fruit, asking for food from relatives, selling livestock, and getting social assistance. In conclusion, artisanal fishing is a natural safety net which constitutes an important buffer for households affected by HIV/ AIDS-related stressors in the Okavango Delta. Access to fish helps these households mitigate potentially adverse impacts such as deterioration into chronic poverty. URI: http://hdl.handle.net/10311/572 Files in this item: 1
NGWENYA2007Okavango.pdf (1.602Mb) -
Phorano, O.M.; Nthomang, K.; Ngwenya, B.N. (Botswana Society, NaN, 2005)[more][less]
Abstract: Batswana have been hard-hit by the HIV/AIDS pandemic. The Botswana government has initiated the Community Home-Based Care programme to provide material support for HIV/AIDS patients cared for at home by family members and relatives. This paper identifies and explores emerging home care issues and pays specific attention to potential risks related to poorly managed clinical human and solid waste disposal generated through home-based care of HIV/AIDS patients in Ngamiland and Kweneng Districts in Botswana. Data were collected through focus group discussion with care-givers, discursive interviews with professional service providers, and participant observation. The results of the study indicate that the majority of care givers received material benefits provided through the CHBC programme. However, it was clear that CHBC did not have the capacity to address other critical needs for the proper care of patients in the home. Most households studied are very poor and lack basic facilities such as toilets, basic waste receptacles and regular collection of solid waste. Access to these facilities is important for disposing of both clinical and ordinary human and solid waste from HBC patients. Poor sanitation facilities - especially the improper handling of soiled laundry and inadequate ventilation - increase risks of infection. The study recommends the formation of care-giver support groups to reduce risks associated with poorly managed clinical solid waste disposal generated from home care-giving of HIV/AIDS patients. URI: http://hdl.handle.net/10311/952 Files in this item: 1
Phorano 2005 HIV.pdf (2.631Mb) -
Ngwenya, B.N.; Butale, B.M. (Botswana Society, NaN, 2005)[more][less]
Abstract: Home care involves the transfer of a patient’s medical supervision from a formal institution to a family setting in the context of a community. The aim of this paper is to assess the resource capacity of families to provide immediate home care to HIV/AIDS related chronically or terminally ill member/s in Maun in Ngamiland District. Data for the study was obtained through cross-sectional interviews with 61 care-givers. Ethnographic methods were also used: these included informal interviews with key informants, unobtrusive participant observation, and narratives of individual and family life experiences. Data collection focused on assessing family resource capacity to access three forms of capital, namely social, productive and produced. Issue focus analysis on qualitative data, and descriptive frequencies and cross-tabulations on quantitative data were carried out. Generally, care-givers reported receiving non-material support from multiple sources. These included moral support from close family members, especially their own children, siblings, parents and spouses, and less from parents’ in-law and their extended family. The threshold of care-giving resource demands could either fragment the family unit, on precipitate ‘enclave-like’ or ‘disengaged’ co-existence or passive aggression. On the other hand, caregiving resource demands may enhance mutual obligation and shared responsibility among family members. A high level of tolerability tends to reduce vulnerability and facilitate pooling limited resources in ways that enhance family capacity. Conversely, adversarial intra-family relations compromise the ability of a family to mobilize its resources. About 70% of care-givers were dependent on non-farming activities as their source of livelihood. Care-giving depletes family resources, including the abandonment of income generating activities. About 81% of care-givers said that they could not do anything to recover or reverse the loss. Access to produced capital such as telecommunication infrastructure is important in terms of the dissemination of public education information aimed at helping reduce risks and the prevention of infection. A significant proportion of care-givers had access to a radio (60%) and cell-phone (48%). The paper ends with some policy recommendations. URI: http://hdl.handle.net/10311/953 Files in this item: 1
Ngwenya 2005 AIDS.pdf (3.334Mb) -
Onyewadume, M.A. (Springer Netherlands, http://www.springerlink.com, September NaN, 2008)[more][less]
Abstract: This research investigated the incidence of HIV/AIDS anxiety among students in Botswana. The sample comprised 240 randomly selected students from six schools in three districts in Botswana, with data collected via a questionnaire. Percentages and Chi-square were used to analyze the extent to which the students were anxious about HIV/AIDS and if there was a significant gender difference in this regard. Findings showed that the students were anxious on several fronts about HIV/AIDS; specifically that they and their relations might contract the virus and that they might lose family members. There was gender difference in terms of anxiety about the possibility that relations might become infected. The role of the counsellor in reducing HIV/AIDS anxiety among students in communities living with HIV/AIDS is discussed. URI: http://hdl.handle.net/10311/802 Files in this item: 1
Onyewadume_IJAC_2008.pdf (781.9Kb) -
Mutanyatta, J.; Matapa, B.; Shushu, D.; Abegaz, B. (Elsevier Ltd. www.elsevier.com/locate/phytochem, NaN, 2002)[more][less]
Abstract: Eleven homoisoflavonoids and two xanthones were isolated and characterized from the bulbs of Ledebouria graminifolia. Five of the homoisoflavonoids are new compounds and were identified as: 5-hydroxy-7-methoxy-3-(40-hydroxybenzyl)-4-chromanone, 5-hydroxy-6,7-dimethoxy-3-(40-hydroxybenzyl)-4-chromanone, 5,7,8-trimethoxy-3-(40-hydroxybenzyl)-4-chromanone, 5-hydroxy- 30,40,7-trimethoxyspiro{2H-1-benzopyran-70-bicyclo[4.2.0]octa[1,3,5]-trien}-4-one, 5,7-dihydroxy-30,40-dimethoxyspiro{2H-1-benzopyran- 70-bicyclo[4.2.0]octa[1,3,5]-trien}-4-one. Structures were elucidated by extensive 1D, and 2D NMR spectroscopy and HRMS. A method for tissue culture was developed and the bulbs of mature plants were found to contain all the compounds isolated from the wild specimens of L. graminifolia. URI: http://hdl.handle.net/10311/249 Files in this item: 2
license.txt (1.998Kb) -
Gatsinzi, J-B. (International Press; http://www.intlpress.com/HHA/, NaN, 2004)[more][less]
Abstract: In this paper, we show that the rational homotopy Lie algebra of classifying spaces for certain types of hyperbolic coformal 2-cones is not nilpotent. Description: Copyright of International Press. http://www.intlpress.com/ URI: http://hdl.handle.net/10311/183 Files in this item: 2
license.txt (1.998Kb)Microsoft Word - Gatsinzi 2004.pdf (611.5Kb) -
Nnyepi, M.S. (Academic Journals. http://www.academicjournals.org, February NaN, 2007)[more][less]
Abstract: Access to primary health care can improve the nutritional status and survival of preschool children. The effect of the universal provision of primary health care in Botswana on the prevalence, types, and determinants of malnutrition in preschool children is unclear. 522 children 0 - 5 years old from 12 clinics in the greater Gaborone area were studied to address this gap. Children’s weights and heights were measured. Birth weights, age, sex, household’s socio-economic factors, children’s illness status and services sought at the clinics were obtained through care giver interviews and confirmed by the data in the health cards. 11.3 and 13.7% of children were stunted and wasted, respectively. Stunting and wasting ranged from 9.1 and 3.6% in middle-high income neighborhoods to 18.2 and 20.8% in low income neighborhoods, respectively. Households’ socio-economic factors were significantly associated with households’ location. Consequently, households’ location was a strong determinant of nutritional status. Children in higher income neighborhoods had better growth indicators than children in lower income neighborhoods. This was true regardless of the illness status of children and the services sought from the clinics. Therefore, where large socio-economic disparities exist, access to primary healthcare may not equitably support households in improving the nutritional status of children. URI: http://hdl.handle.net/10311/519 Files in this item: 1
Nnyepi_SRE_2007.pdf (673.0Kb) -
Mmopelwa, G.; Kgathi, D.L.; Masamba, W.R.L.; Thukuza, A. (Botswana Society, NaN, 2005)[more][less]
Abstract: Water supply in Maun is unreliable and unpredictable, and most households experience water shortage all year round. Coping strategies for households include water storage in tanks. Water quality is also poor due to its salty taste, presence of sediments and colour. The majority of households have henceforth embarked on coping strategies such as buying bottled water. On average, households spend about P71 per month as avoidance cost. A contingent valuation method assessment was carried out and it was found that the mean maximum household’s willingness to pay for a water quality improvement fund was P55 per month. Chemical analysis carried out on water samples from the study area confirm that the water has high electrical conductivity, sediments, colour, and iron and manganese levels. URI: http://hdl.handle.net/10311/938 Files in this item: 1
Mmopelwa 2005 House.pdf (1.540Mb) -
Mogalakwe, M. (Council for the Development of Social Science Research in Africa, http://www.codesria.org/?lang=en, NaN, 2006)[more][less]
Abstract: Britain declared Bechuanaland a 'protectorate' in 1885 in a move largely driven by military strategic considerations rather than by the availability of economic resources. This can give the impression that in Botswana the process of economic underdevelopment, that is often associated with colonialism, never took place in this British 'protectorate'. This article reveals that even in the so-called 'protectorate', the British colonial state policies subverted indigenous economic interests and stifled opportunites for indigenous private capital accumulation, while actively promoting the economic interests of a small white settler capitalist class. URI: http://hdl.handle.net/10311/652 Files in this item: 1
Mogalakwe_AD_2006.pdf (1.331Mb) -
Pansiri, J. (WileyInterscience, www.wileyinterscience.com, NaN, 2007)[more][less]
Abstract: The purpose of this paper is to examine the role of company executive characteristics in strategic alliance formation in the tourism sector of travel. A survey of Australian travel sector businesses was carried out and the result indicate a high level of interaction through alliances between various sectors of the Australian tourism industry. Top managers' characteristics (experience, ownership,and risk taking attitude)were found to be influential in taking strategic decisions of whether to form alliances or not. These characteristics do not play an important role in determining the number of alliances an organisation has and their geographical location, as much as company characteristics do. The findings of this paper imply that company characteristics are important in determining alliance formation. Managers should thoroughly consider these characteristics when deciding not only to form alliances, but also the type of alliances that could help their organizations to be more competitive, give limited resources. URI: http://hdl.handle.net/10311/821 Files in this item: 1
Pansiri_IJTR9_2007.pdf (1.900Mb) -
Monyatsi, P.P. (Kamla - Raj Enterprises, http://www.krepublishers.com, November NaN, 2008)[more][less]
Abstract: This paper argues that much as the gender mainstreaming process was a noble venture, the cross-cutting nature of the gender mainstreaming was not fully understood and appreciated by some very powerful and influential sectors and stakeholders in the religious world. In short, their belief that what has been created by God cannot be changed by man frustrates any gender mainstreaming interventions as they are above the constitutions of the states. URI: http://hdl.handle.net/10311/637 Files in this item: 1
Monyatsi_JSS_2008.pdf (1.317Mb) -
Onibere, E.A.; Morgan, S.; Busang, E.M.; Mpoeleng, D. (Elsevier Science Ltd, www.elsevier.com/locate/intcom, NaN, 2001)[more][less]
Abstract: This paper reports on research carried out to determine whether a localised interface is preferred by users in a multi-cultural and multi-lingual country where a non-local language is nationally used,. We attempted to discover whether local symbols are more acceptable to users as icons and also whether the current phrases used in menus and icon descriptions are clearly understood by the various communities. A survey was conducted nation-wide among computer end-users in Botswana. The results indicate an overwhelming desire from users for a localised interface. However, there appears to be little need for localised icons and no agreement as to which language to use for text-based interfaces. URI: http://hdl.handle.net/10311/887 Files in this item: 1
Mpoeleng_IC_2001.pdf (1.247Mb) -
Ngowi, A.B. (Taylor and Francis, http://www.pdfserve.informaworld.com/940578_73138570, NaN, 1997)[more][less]
Abstract: This paper examines the strategy of employing a hybrid combination of indigenous and modern housing construction technologies. Using a Botswana village as a case study, this paper examines four traditional house types in relation to the household income, skills, materials and aspects which could be improved by adapting industrialized methods. Using experimental houses, the case study provides the costs, benefits, potential problems and implementation considerations. The paper discusses the weaknesses and virtues of traditional construction technologies, how appropriate aspects from modern technologies can be incorporated or adapted into traditional methods and the implications for developing appropriate, affordable housing technologies URI: http://hdl.handle.net/10311/370 Files in this item: 1
Ngowi_1997_BRI.pdf (800.7Kb)