Khuetšo ya Matlotlo a Kgwebo go bokgoni bja go hwetša Dipoelo Tšhupo ya Panka ya Tlhabollo ya Naga le tša Temo ya Afrika Borwa

Abstract in English, Zulu and SepediThe purpose of this study was to determine the impact of capital structure on the profitability of the Land and Agricultural Development Bank of South Africa (Land Bank). Both theoretical and empirical literature were reviewed in order to guide the empirical investigation of this study. In particular, the theories of financial intermediation, credit creation and fractional reserve formed the basis of this study. The capital structure theories that were examined included the pecking order theory, trade-off theory and Modigliani-Miller leverage irrelevance theory. In the literature, it was observed that profitable companies prefer using internal funds over debt or equity. To test the stated hypothesis that there is no relationship between capital structure and bank profitability, a quantitative research design with a case study approach was used, with the Land Bank as the unit of analysis. Using time series data for the period 1982 to 2015, multiple regression using the ordinary least squares method was applied to test the specified models. Preliminary data analysis was performed using trend analysis, descriptive statistics and Pearson bivariate correlation analysis. The study demonstrated that the relationship between capital structure and bank profitability was positive and statistically significant at a 95% confidence level when using only equity. However, inclusion of debt in the capital structure showed that capital structure, proxied by the debt-to-equity ratio, resulted in a negative relationship between capital structure and bank profitability, albeit statistically insignificant. It was concluded that the Land Bank requires an injection of equity to improve its performance. Alternative low-cost sources of funding to debt should be considered. The results of the study have policy implications for the Land Bank, regulators and potential investors.Injongo yalolu cwaningo kwabe kuwukucubungula nokuthola umthelela wesimozimali sebhizinisi ekungeneni kwenzuzo eBhange Lokuthuthukiswa Komhlaba Nezolimo laseNingizimu Afrika (iBhange Lomhlaba). Kokubili, imibhalo yethiyori kanye nemibhalo esuselwe emaqinisweni abonakalayo naphathekayo, yabuyekezwa ukuze ihole futhi ilawule uphenyo olugxile emaqinisweni abonakalayo naphathekayo oluqondene nalolu cwaningo. Amathiyori ayisisekelo salolu cwaningo, ikakhulukazi, kwaba yi-financial intermediation, credit creation kanye ne-fractional reserve. Lawo mathiyori esimozimali sebhizinisi acutshungulwa abandakanya i-pecking order theory, trade-off theory kanye ne-Modigliani-Miller leverage irrelevance theory. Emibhalweni eyacutshungulwa, kwabonakala ukuthi izinkampani ezinenzuzo zincamela ukusebenzisa izimali zangaphakathi kunokusebenzisa isikweletu noma izabelokulingana (equity). Ngenhloso yokuhlola ihayiphothesisi ethuliwe yokuthi abukho ubudlelwano phakathi kwesimozimali sebhizinisi kanye nokungena kwenzuzo ebhange, kwasetshenziswa idizayini yocwaningo olukhwantithethivu ehambisana nendlela yokusebenzisa ucwaningo lwesigameko egxile ekuhlaziyweni kweBhange Lomhlaba. Ngokusebenzisa i-time series data yesikhathi esisukela kowe-1982 kuyofinyelela kowezi-2015, kwalandelwa i-multiple regression ngokusebenzisa i-ordinary least squares method ukuhlola amamodeli achaziwe. Uhlaziyo lwedatha olwandulelayo lwenziwa ngokusebenzisa uhlaziyo lwezimonkambiso (trend analysis), izibalomanani ezichazayo (descriptive statistics) kanye ne-Pearson bivariate correlation analysis. Ucwaningo lwabonisa ukuthi bukhona ubudlelwano obuphawulekayo phakathi kwesimozimali sebhizinisi kanye nokungena kwenzuzo ebhange futhi idatha yabonisa ukuthembakala okusezingeni elingama-95% uma kusetshenziswa izabelokulingana kuphela. Kodwa-ke ukufakwa kwesikweletu kwisimozimali sebhizinisi kwabonisa ukuthi isimozimali sebhizinisi, ngokusekelwa yizinga-silinganiso phakathi kwesikweletu nezabelokulinganisa, kwaholela ekutheni bungabi khona ubudlelwano obuphawulekayo phakathi kwesimozimali sebhizinisi kanye nokungena kwenzuzo ebhange, nakuba idatha mayelana nalokhu yabonisa ukungathembakali okuthile. Kwafinyelelwa esiphethweni sokuthi iBhange Lomhlaba lidinga ukuthi kufakwe izabelokulingana ngenhloso yokwenza ngcono ukusebenza kwalo. Kumele kwenziwe imizamo yokuthola eminye imithombo yezimali ehlukile futhi engambi eqolo. Imiphumela yocwaningo inemithelela ethile ephathelene nezinqubomgomo eqondene neBhange Lomhlaba, abalawuli kanye nalabo okungenzeka babe nesifiso sokutshala izimali.Morero wa thutelo ye e be e le go laetša khuetšo ya matlotlo a kgwebo go bokgoni bja go hwetša dipoelo bja Panka ya Tlhabollo ya Naga le tša Temo ya Afrika Borwa (Land Bank). Dingwalo tša ditlhalošo tša diteori le tšeo dithutelo tša peleng di di hweditšeng di sekasekilwe go fa tlhahlo go dipoelo tša dinyakišišo tšeo di dirilwego peleng tša thutelo ye. Gabotsebotse, diteori tša mokgwa wa dipanka wa go tšea tšhelete ye e bolokilwego tša e adimiša, mokgwa wa dipanka wa go hlola dikadimo ka bontši le tsheketšo ya palophatlo ya tšhelete di bopile motheo wa thutelo ye. Diteori tša matlotlo a kgwebo tšeo di lekotšwego di akareditše teori ya mokgwa wa go kgetha methopo ya kadimo ya ditšhelete, teori ya go lekanyetša ditheko le ditefelokholego le teori ya Modigliani-Miller ya go re mokgwa wa go diriša tšhelete ye e adimilwego go bona dipoelo ga o ame boleng bja khamphani. Ka go dingwalo, go lemogilwe gore dikhamphani tše di ka hwetšago dipoelo di kgetha go diriša matlole a ka gare go ena le dikoloto goba bokaalo bjo bo šalago ka morago ga go ntšha dikoloto Go leka kakanyo ye e filwego ya gore ga go na tswalano gare ga matlotlo a kgwebo le bokgoni bja panka bja go hwetša dipoelo, tlhako ya nyakišišo ya go hwetša dikarabo go batho ka bontši ka mokgwatebelelo wa nyakišišo ye e dirilwego ka ga tiragalo e dirišitšwe, ka Land Bank bjalo ka yuniti ya tshekatsheko. Ka go diriša datha go ya ka tatelano ye e itšeng ya nako ya paka ya 1982 go iša go 2015, tlhahlobo ya tswalano gare ga mabaka a mabedi goba go feta ka go diriša mokgwa wa go fokotša palo ya disekwere e dirišitšwe go leka mehlala ye e šupilwego. Tshekatsheko ya datha ya mathomo e phethagaditšwe ka go diriša tshekatsheko ya taolelopele ya seo se tla diregago ka ditšhelete, mokgwa wa go sekaseka dipalopalo le tshekatsheko ya Pearson ya dipalo tše pedi go bona tswalano ya tšona. Thutelo e laeditše gore tswalano gare ga matlotlo a kgwebo le bokgoni bja panka go hwetša dipoelo go bile le ditlamorago tše botse le dipoelo tše di ka bago nnete ka kemo ya kgonthišo ya 95% ge go dirišwa fela bokaalo bjo bo šalago ka morago ga go ntšha dikoloto. Le ge go le bjalo, kakaretšo ya sekoloto ka go matlotlo a kgwebo go bontšhitše gore matlotlo a kgwebo, ao a laeditšwego ka tekanyo ya palomoka ya dikoloto go bokaalo bjo bo šalago ka morago ga go ntšha dikoloto, e hlotše tswalano ye e sa letelwago gare ga matlotlo a kgwebo le bokgoni bja panka go hwetša dipoelo, le ge e ka ba dipoelo tše di ka bago nnete. Go phethilwe ka go re Land Bank e nyaka koketšo ya bokaalo bjo bo šalago ka morago ga go ntšha dikoloto go kaonafatša tiro ye e swanetšwego go dirwa. Methopo ye mengwe ya tswala ya fase go dikoloto e swanetšwe go lebelelwa. Dipoelo tša thutelo di na le ditlamorago tša Molaotshepetšo wa Land Bank, balaodi le babeeletši ba ka moso.Finance, Risk Management and BankingM. Com. (Finance

The influence of rotational speed and pressure on the properties of rotary friction welded Titanium alloy (Ti‐6Al‐4V)

Abstract: This paper presents an investigation of rotary friction welding of 25.4 mm diameter Ti‐6Al‐4V rods. The weld process parameters used for this research were rotational speed, axial pressure and forging time. Only relative speed and axial pressure were the varied parameters while the forging time was kept constant. The mechanical properties of the weld joints were analysed and characterized. The results showed that the rotational speed and friction pressure have significant influence on the tensile strength, microstructure and weld integrity. As rotational speed increased heating time also increased in the weld, as a result, greater volume of material was affected by heat resulting in a wider width of the weld joint. Fine microstructure resulted due to an increased rotational speed and frictional pressure respectively. The oxidation and discolouration of welds were also discussed

Process optimization of rotary friction welding of Ti-6Al-4V alloy rods

Abstract: This paper presents an investigation on the performance of rotary friction welded 25.4 mm diameter Ti-6Al-4V alloy rods. The process parameters used are friction and forging pressure, rotational speed, forging time and upset distance. The heating time was determined by the amount of friction pressure and rotational speed utilised. The final weld joints were examined for mechanical properties. The results revealed that friction welding process parameters have significant influence on the weld joint properties and weld joint integrity. The hardness and ultimate tensile properties of the weld joints varied with the variation in rotational speed and axial pressure. The tensile properties of the weld joints were higher than the parent material at lower rotational speed or higher axial pressure. The weld width was proportional to relative motion and inversely proportional to axial pressure

Environmental and Economic Analysis of Selected Pavement Preservation Treatments

Pavements are one of the highest assets and represent massive investment. The need to design and provide a sustainable maintenance service is becoming a priority and this comes mutually with the intentions to reduce impacts caused by maintenance treatments to the environment. This paper through a case study presents a Life Cycle Cost and Assessment technique during a 30 year analysis period to measure the cost effectiveness, embodied energy and carbon emissions of selected preservation treatments. These treatments can either be applied separately or in combination during the preventive maintenance of road pavements. This study entails three life cycle phases of material extraction and production, transportation and construction of maintenance activities. Through a literature review, raw materials energy and emission inventory data was averaged followed by the analysis of the equipment involved by using the specific fuel consumption to calculate the energy and emissions spent by the machine and finally the selected treatment energy and emissions was computed. Results show that preservation treatments can have an LCC of 30-40 % and embodied energy and carbon emission of 3-6 times lower than the traditional approach. This study bridges gaps in literature on integrated evaluation of environmental and economic aspects of preservation treatments

Clinical and ultrasonographic features of abdominal tuberculosis in HIV positive adults in Zambia

Background: The diagnosis of abdominal tuberculosis (TB) is difficult, especially so in health care facilities in developing countries where laparoscopy and colonoscopy are rarely available. There is little information on abdominal TB in HIV infection. We estimated the prevalence and clinical features of abdominal (excluding genitourinary) TB in HIV infected adults attending the University Teaching Hospital, Zambia. Methods: We screened 5,609 medical inpatients, and those with fever, weight loss, and clinical features suggestive of abdominal pathology were evaluated further. A clinical algorithm was used to specify definitive investigations including laparoscopy or colonoscopy, with culture of biopsies and other samples. Results: Of 140 HIV seropositive patients with these features, 31 patients underwent full evaluation and 22 (71%) had definite or probable abdominal TB. The commonest presenting abdominal features were ascites and persistent tenderness. The commonest ultrasound findings were ascites, para-aortic lymphadenopathy (over 1 cm in size), and hepatomegaly. Abdominal TB was associated with CD4 cell counts over a wide range though 76% had CD4 counts <100 cells/μL. Conclusion: The clinical manifestations of abdominal TB in our HIV-infected patients resembled the well-established pattern in HIV-uninfected adults. Patients with fever, weight loss, abdominal tenderness, abdominal lymphadenopathy, ascites and/or hepatomegaly in Zambia have a high probability of abdominal TB, irrespective of CD4 cell count. © 2009 Sinkala et al; licensee BioMed Central Ltd

Outcomes of a remote, decentralized health center-based HIV/AIDS antiretroviral program in Zambia, 2003 to 2007

A cross-sectional study of patients living with HIV/ AIDS treated during 2003 to 2007 in decentralized, rural health centers in Zambia was performed to measure virological outcomes after 12 months of antiretroviral therapy and identify factors associated with virological failure. Data from 228 patients who started antiretroviral therapy >12 months prior were analyzed. In all, 93% received stavudine + lamivudine + nevirapine regimens, and median antiretroviral therapy duration was 23.5 months (interquartile range 20-28). Of the 205 patients tested for viral load, 177 (86%) had viral load <1000 copies/mL. Probability of developing virological failure (viral load >1000 copies/mL) was 8.9% at 24 months and 19.6% at 32 months. Predictors for virological failure were <100% adherence, body mass index <18.5 kg/m(2), and women <40 years old. Of those with virological failure who underwent 3 to 6 months of intensive adherence counseling, 45% obtained virological success. In a remote, resource-limited setting in decentralized health centers, virological and immunological assessments of patients on antiretroviral therapy >12 months showed that positive health outcomes are achievable

Occupational therapy students’ use of social media for professional practice

Background. The use of social media for professional practice is an emerging trend for healthcare professionals; however, limited literature exists on the phenomenon. Social media usage is prevalent among students, as it is incorporated into many health professions education curricula. This poses potential ethical dilemmas.Objective. To examine the nature of social media usage and knowledge of ethical considerations by occupational therapy (OT) students for professional purposes.Methods. A quantitative, cross-sectional survey was administered to the entire cohort of OT students (N=128) enrolled at the University of KwaZulu-Natal, Durban, South Africa in 2016. Data were analysed descriptively using Microsoft Excel 2013 (Microsoft, USA).Results. The most commonly used device to access social media was mobile phones, with WhatsApp and YouTube frequently used for both general and professional purposes. Uses included accessing social media for developing professional skills and knowledge, and in fulfilling academic requirements. Ethical dilemmas were evident among students, who indicated that social media ethical considerations should be incorporated into the curriculum.Conclusion. The study highlighted that most students use some form of social media as part of their professional practice, which has the potential to be used effectively to enhance learning opportunities. Future studies of a qualitative nature could shed light on students’ perceptions of social media and practical implications for practice

Seed germination and in vitro regeneration of the African medicinal and pesticidal plant, Bobgunnia madagascariensis

Propagation of the medicinal and pesticidal tree, Bobgunnia madagascarensis is difficult due to poor and erratic germination of its seeds and slow growth of its seedlings. This study involved two separate experiments. The first evaluated the effect of pre-sowing treatments and growing medium on ex vitro seed germination and early seedling development. The second experiment involved in vitro germination, shoot initiation and rooting of shoots. Pre-sowing seed treatments involved soaking seeds in cold and hot water for 12 and 24 h and soaking in different concentrations (0, 100, 200, 400 and 800 mg/l) of gibberellic acid for 24 h. Soaking of seeds in cold or hot water for up to 24 h did not achieve more than 45% germination, while seeds treated with gibberellic acid achieved &lt;20% germination rates. On the other hand, in vitro procedures achieved 30 to 70% germination of seeds. Seedling survival of ex-vitro germinated seeds was higher (&gt;76%) when seeds were sown in a growing medium without compost compared with a medium with compost (&lt;43%). All shoot-tips isolated from the in vitro germinated seedlings on B5 media without plant growth regulators continued to grow as a single shoot, while shoot-tips cultured on B5 supplemented with 0.1 mg/l of naphthaleneacetic acid (NAA) and thidiazuron (TDZ) produced two shoots each after four weeks. It was concluded that B. madagascariensis seeds had very low ex vitro germination percentages. Although, in vitro cultures improved seed germination, axillary shoot multiplication and rooting were not satisfactory. Therefore, further studies are needed to develop an optimal in vitro multiplication protocol for B. madagascariensis.Key words: Axillary shoot multiplication, gibberellic acid, in vitro regeneration, seed germination, Swartzia

Investigating the role of the Public Private Partnership Act on private sector participation in PPP projects : A case of Zambia

In 2008, the Public Private Partnership (PPP) concept was identified by the Zambian Government as a vehicle for scaling up public infrastructure project delivery in the country. A platform for active private sector participation in the direct provision of public goods and services was created by enacting the PPP Act No. 14 of 2009. It was anticipated that this would encourage the local and international private sector to participate in delivering PPP projects. The aim of this research was therefore to investigate the role of this PPP Act on the private sector’s decision to participate in PPP projects in Zambia. A mixed method design was adopted for this research due to limited information and stakeholders on the ground. 43 industry practioners representing contractors, developers’ financiers and government were identified motivating a mixed method approach in order to obtain more data given a generally lower sample available. A total of 27 questionnaires were obtained. Findings revealed that the PPP Act had not played a significant role to influence private sector decision to participate in PPP projects. The findings from this research unlocks part of the reason why there is little participation by private sector in PPP projects. The research identifies presents areas of focus in amending the Act in order to attract and influence private investment in current critical areas such as energy, higher education and housing among others. The study recommends that the immediate revision of PPP Act to remove identified barriers which among others include inadequate and unclear governing PPP framework, obstruction by bureaucracy, inappropriate risk sharing mechanisms and absence of protection to the private sector stakeholders