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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

A framework for enhancing trust for improved participation in electronic marketplaces accessed from mobile platforms

Isabirye, Naomi Nabirye, Von Solms, R January 2016 (has links)
Information and communication technologies (ICTs) have been widely researched as a mechanism for improving the socio-economic status of disadvantaged, rural communities. In order to do this numerous technology-based initiatives have been introduced into disadvantaged, rural communities to assist them in various aspects of their lives. Unfortunately, even when the proposed benefit of a particular technology is clearly evident to its initiators, the adoption by the target users is often uncertain. This has also been the case with e-commerce in agriculture. Despite the numerous benefits of e-commerce for agricultural producers, the uptake has been low. Trust is a critical pre-condition for the adoption of e-marketplaces. E-marketplaces expose consumers to the risk of non-delivery or misrepresentation of goods ordered and the misuse of personal information by external parties. Additionally, the time investment needed to make a shift to e-marketplaces and the opinions of important reference groups affects the user’s willingness to trust and depend on an e-marketplace. This study was undertaken to assess the extent to which rural users with limited ICT experience would trust and, consequently, adopt an e-marketplace to support agricultural trade. A pragmatic philosophy was adopted in this study, indicating that the researcher’s view of reality is founded on the practical implications and outcomes that are observed. This study used a Canonical Action Research strategy to design, develop and deploy a voice based e-marketplace to assist the trading activities of a Western Cape based aloe community. The community was allowed to utilise thee-marketplace over a period of eight weeks. Thereafter, interviews were held with the participants to investigate their perceptions of the technology. As a result, a model proposing the factors that must be in place for trust to be achieved in a voice based e-marketplace was proposed. The study found that the trustworthiness of a technology results from the technology’s technical capability to satisfy the needs of its users reliably. Usability and security were found to be important determinants of the trustworthiness of a technology. Furthermore, the requirements elicitation process was found to be central to achieving trust as it defines the necessary criteria for developing secure, usable, functional, and reliable technologies that meet the needs of their users.
2

Determinants of smallholder maize farmer's varietal choice : a case study of Mogalakwena Local Municipality Limpopo Province, South Africa

Makwela, Mokgadi Angelina January 2021 (has links)
Thesis (M. A. Agriculture (Agricultural Economics)) -- University of Limpopo, 2021 / Maize seeds differ according to varieties.The traditional maize varieties(also referred to as (Landraces)are maize varieties that have been cultivated and subjected to selection by farmers for generations.They retain a distinct identity and lack formal crop improvement. Improved maize varieties,on the other hand,are bred with characteristics such as drought and disease tolerance. This research was conducted to determine the attributes preferred by farmers when making a maize varietal choice.To be specific, the study aimed to achieve the following objectives:(i) Identify and describe socio economic characteristics of smallholder maize farmers’ in Mogalakwena Municipality; (ii) Analyse socioeconomic characteristics of smallholder maize farmers in Mogalakwena Municipality; (iii) Identify different maize varieties grown by smallholder farmers in Mogalakwena Municipality,and (iv) determine and analyse factors influencing farmers’choice ofa maize variety. Descriptive statistics and the Multinomial Logistic Regression Model were used for data analysis.The results of the study revealed that 64% of the respondents had formal education.This meant that they have the capability to grasp more information, if provided with trainings. It was found that 75% of the farmers did not have access to extension service which is supposed to play a significant role in agricultural information dissemination.The most grown maize variety was land race varieties which constituted 59.5%. This percentage was said to be resultant from limited access to the seed market. Infact,80% of the farmers had to travel an average of 42 kilomteres to access the market which also had a limited number of varieties.The Multinomial Logistic Regression Model revealed that only 5 variables (Educational level, farm size, yield, extension contact and knowledge of maize varieties )were significantat1%,5%,1%,1% and1%, respectively.The majority of farmers were old people with little access to extension service and an inadequate farming knowledge which lead to a highper centage of farmers continuing to grow landrace varieties. Based on the findings, this study recommend further research on attributes that influence farmers varietal choice and Government intervention in provision for resources and development of existing and new infracstrcture to encourage extension service delivery. Keywords:Landrace,improvemaizevariety,smallholderfarmer
3

The e-agriculture research landscape in South Africa : a systematic literature review

Kintoki, Alain Nzuzi January 2017 (has links)
Thesis (MTech (Information Technology))--Cape Peninsula University of Technology, 2017. / The objective of this study was to determine the current status of e-agriculture research in the South African context. A systematic literature review was used to gather and analyse data in alignment with the objective of the study. The researcher used keywords and combined search keywords on web search engines and digital databases to obtain pertinent research papers. The scope of the study was limited to the period 2000-2016. The books, theses, conference papers and journal articles identified as pertinent to conduct the study, amounted to 114 in number. The analysis of the study described the focus of research papers, research methods, research approaches, theoretical lenses, units of analysis and observation, levels of analysis, historical development, and major concepts and disciplines used by authors in their studies. The study also sought to discover the year of publication and assessment of searchability of the papers. The results indicate that 13 papers (11.4%) were published in the first five years (2000- 2004) and 51 papers (44.7%) in the last five years (2012-2016) of the delimited period for the study. The results of the study further indicate that the application of geographic information systems (GISs) towards improving agriculture was the most prominent eagriculture research area in South Africa (27 papers, 23.6%), followed by the use of satellite enhancing agriculture (26 papers, 22.8%). E-government direct services, mobile in agriculture, and agricultural information systems were the least prominent e-agriculture research areas in South Africa with a contribution of two papers (1.8%) each. The results of this study show that information mapping was the most used research method by researchers in their studies (57 papers, 50%), followed by the case study method with 31 papers (27.1%). The results further denote that the least used research method was industry reports with no mention of it in any of the pertinent papers, followed by grounded theory with two papers (1.7%). Interpretivism was the most used research approach by researchers (six papers, 5.2%) during the period 2000-2016. The findings of this study clearly show that researchers still need to address certain issues or problems regarding e-agriculture in South Africa in order to improve the agricultural sector. The contribution of the study is to understand the importance of enhancing research capability and socio-economic transformation of farmworkers and farmers through enhanced communication of agriculture research knowledge in the area of agricultural informatics. A foundation for further studies was created for continuous e-agriculture research in South Africa.
4

Information communication technology (ICT) community centres and agricultural development in the Eastern Cape province of South Africa: a case of Dwesa community

Mukasi, Tafadzwa Jaquline January 2015 (has links)
The development of Information Communication Technology (ICT) in rural areas has
5

The design, implementation and assessing of an agroecological cropping system by rural KwaZulu-Natal households : its effect on their diet and food security

Strachan, Brian Douglas 04 1900 (has links)
Thesis(MPhil)--Stellenbosch University, 2014 / ENGLISH ABSTRACT: This thesis documents a Participatory Action Research (PAR) project conducted from 2011 to 2013 in a rural communal area in southern KwaZulu-Natal, South Africa. The area is a microcosm of the global environmental and socio-economic polycrisis; with adult unemployment at 50 percent, 73 percent female-headed households, heavy dependence on government social grants and a food system reliant on purchased food. Eight, mainly female-headed households (the co-researchers), assisted by the student researcher, implemented and assessed a cropping system, designed on agroecological principles, on their abandoned garden plots. The objective was to grow culturally acceptable food crops to supplement their household diets and positively affect their food security. The student researcher provided the necessary infrastructure, including goat-proof plot fences, hand tools, a grain hammermill, seed, and fertiliser. The literature review, which also used early 1900’s photographs and contemporary isiZulu language as evidence, revealed the agroecological basis of pre-colonial agriculture. However, colonial and apartheid influences destroyed this knowledge base. The cropping system design utilized practices from this pre-colonial era combined with current agroecological techniques. The agroecological techniques employed on the plots included non-inversion tillage of planting pits using garden forks, precision placement of phosphate fertiliser and animal manures, open pollinated seeds, east-west orientated strip cropping, soil surface mulches, crop rotations including legumes and the use of chickens to control pests. Dryland crops included maize, beans, sweet potatoes, and butternuts, with small trial vegetable patches on some plots. The research identified a method to calculate the planting frequency of these vegetables to ensure a constant annual supply, however further research is needed. The dryland crops supplemented household diets between harvests. The formation of structured groups amongst the households proved vital to the success of the cropping system, providing mutual labour assistance, shared decision-making, building knowledge and moral support. The importance of dialogue and trust, reinforced by the student researcher’s ability to communicate in isiZulu with the co-researchers, formed the basis of both the PAR, and Focus Group Discussions(FGD), used to qualitative assess the cropping system. During these, the households reported a good understanding of the agroecological principles of the cropping system, a willingness to continue with it post research, and positive benefits, including better health, and money saved on food purchases, redirected to improve their asset base. The World Food Programme (2008) Food Consumption Score Analysis Method (FCS), modified to show the percentage contribution of homegrown food to the FCS, provided the quantitative assessment of the cropping system. The FCS scores rose during the research, with homegrown food contributing over a third of the FCS at times. The co-researchers suggested instituting group ‘stokvels’1to finance inputs and maintain infrastructure post research. The financial implications of these ‘stokvels’ was calculated. Due to the initial success of the PAR, the research recommends a method to extend the cropping system to more households, utilizing state finance to provide the infrastructure, and the co-researchers imparting technical knowledge through farmer-to-farmer extension. / AFRIKAANSE OPSOMMING: In hierdie tesis word verslag gedoen van ’n deelnemende aksienavorsingsprojek wat van 2011 tot 2013 in ’n landelike dorpsgebied in die suide van KwaZulu-Natal, Suid-Afrika, uitgevoer is. Die gebied is ’n mikrokosmos van die wêreldwye omgewings- en sosio-ekonomiese polikrisis, met volwasse werkloosheid op 50%, 73% huishoudings met vroue aan die hoof, swaar afhanklikheid van die staat se maatskaplike toelae en ’n voedselstelsel wat van gekoopte kos afhanklik is. In die studie het agt huishoudings, wat hoofsaaklik vroue aan die hoof het (die medenavorsers), met behulp van die studentenavorser, ’n verbouingstelsel, wat op agro-ekologiese beginsels gegrond is, op hul verlate tuingrond geïmplementeer en geassesseer. Die doel was om kultureel aanvaarbare gewasse te verbou om hul huishoudelike dieet aan te vul en hul voedselsekerheid positief te beïnvloed. Die studentenavorser het die nodige infrastruktuur verskaf, met inbegrip van bokbestande omheining, handgereedskap, ’n graanhamermeul, saad en kunsmis. Die literatuurstudie, waarin foto’s uit die 1900’s en moderne Zoeloe as bewyse gebruik is, toon die agro-ekologiese grondslag van prekoloniale landbou. Koloniale en apartheidsinvloede het egter hierdie kennisbasis vernietig. Die verbouingstelselontwerp was gegrond op praktyke uit hierdie prekoloniale era gekombineer met moderne agro-ekologiese tegnieke. Hierdie tegnieke het ingesluit nie-inversie-grondbewerking van plantgate met gebruik van tuinvurke, presisieplasing van fosfaatkunsmis en dieremis, oop bestuifde sade, oos–wes-georiënteerde strookverbouing, grondoppervlak-deklae, wisselbou met onder andere peulgewasse en die gebruik van hoenders om peste te beheer. Droëland-gewasse het ingesluit mielies, bone, soetpatats en botterskorsies, met klein toetsgroenteakkers op sommige stukke grond. ’n Metode is in die navorsing geïdentifiseer om te bepaal hoe gereeld hierdie groente geplant moet word om ’n konstante jaarlikse voorraad te verseker. Verdere navorsing is egter nodig. Die droëland-gewasse het huishoudelike diëte tussen oeste aangevul. Die vorming van gestruktureerde groepe onder die huishoudings het noodsaaklik geblyk te wees vir die sukses van die verbouingstelsel, waardeur wedersydse hulp met arbeid, gedeelde besluitneming, die bou van kennis en morele ondersteuning gebied is. Die belangrikheid van dialoog en vertroue, wat versterk is deur die studentenavorser se vermoë om in Zoeloe met die medenavorsers te kommunikeer, het die grondslag gevorm van die deelnemende aksienavorsingsprojek asook die fokusgroeponderhoude, wat gebruik is om die verbouingstelsel kwalitatief te assesseer. In hierdie onderhoude het die huishoudings verslag gedoen van hul grondige begrip van die agro-ekologiese beginsels van die verbouingstelsel, hul gewilligheid om ná die navorsing daarmee voort te gaan, asook die voordele wat dit bied, soos beter gesondheid en geld wat op voedselaankope gespaar is, wat heraangewend is om hul batebasis te verbeter. Die Wêreldvoedingsprogram (2008) se Food Consumption Score- (FCS-)ontledingsmetode, wat aangepas is om die persentasie bydrae van selfgekweekte voedsel tot die FCS aan te toon, is gebruik vir die kwantitatiewe assessering van die verbouingstelsel. Die FCS-tellings het tydens die navorsing toegeneem, met selfgekweekte voedsel wat by tye tot meer as ’n derde tot die FCS bygedra het. Die medenavorsers het voorstel dat ’n stokvel gestig word om insette te finansier en die infrastruktuur ná die navorsing in stand te hou. Die finansiële implikasies van hierdie stokvel is bereken. Op grond van die aanvanklike sukses van die deelnemende aksienavorsingsprojek stel die navorser ’n metode voor om die verbouingstelsel na meer huishoudings uit te brei met behulp van staatsfinansiering om die infrastruktuur te verskaf asook die oordrag van die medenavorsers se tegniese kennis na ander boere.
6

Animal traction and small-scale farming : a Stellenbosch case study

Manjengwa, George Munyaradzi 03 1900 (has links)
Thesis (MPhil)--University of Stellenbosch, 2011. / ENGLISH ABSTRACT: The main aim of this case study was to research the impact of the introduction of oxen for draught power on Eric Swarts’ Stellenbosch farm. The research objectives were designed to find out if the oxen helped to improve the quality of the soil, to determine their cost-effectiveness (compared to a tractor) and other social and managerial constraints and benefits associated with using them and also to make recommendations for small-scale farmers in developing countries. The literature review revealed that human society faces many serious sustainability challenges from ecosystem degradation and global warming, to massive poverty and social inequality. The global population is growing against a background of decreasing agricultural productivity due to degraded soils and the increased costs of farming. The adoption of farming methods that enhance ecosystem services and depend less on external inputs is therefore essential. Animal traction is still widely used among small-scale farmers in developing countries, but lacks policy and investment support to make it more efficient. There are currently widespread negative opinions about animal traction which regard it as a backward or old-fashioned technology. This research investigated the possibility of animal traction emerging as an affordable, environmentallyfriendly and appropriate technology for small-scale farming. The research is a case study with a qualitative, ethnographic research design in which participant observation was key in gathering research data. A cost-benefit analysis (CBA) was carried out to compare the cost-effectiveness of using oxen to either hiring or buying a tractor. The findings showed that oxen were a more cost-effective means of draught power than a tractor, not only in terms of capital costs but also maintenance and operational costs. The manure from the oxen was both an effective way of supplying crops with essential nutrients and improving soil biodiversity. The introduction of the oxen presented some challenges to the farmer concerning knowledge about how animals work and other managerial challenges, but these were overcome by learning through practice. It was found that the farmer will be able to make significant savings in soil-amendment costs and he can control the quality of the manure to suit his needs. It was concluded that small-scale farmers who choose animal traction over tractors as a means of draught power will realise many advantages in return. / AFRIKAANSE OPSOMMING: Die hoof doelwit van dié gevallestudie was om die impak van die ingebruikneming van osse as trekkrag op Eric Swarts se plaas te Stellenbosch na te vors. Die navorsingsteikens was ontwerp om uit te vind of die beeste gehelp het om die kwaliteit van die grond te verbeter, om hul lonendheid vas te stel (in vergelyking met ’n trekker) asook ander sosiale en bestuursbeperkings en -voordele wat met hul gebruik geassosieer word en ook met voorstelle vir kleinskaalboere in ontwikkelende lande voorendag te kom. Die literatuuroorsig navorsing het ontbloot dat die menslike samelewing met vele volhoubaarheidsuitdagings vanaf ekosistemiese agteruitgang en aardverhitting, tot swaar armoedigheid en sosiale ongelykhede gekonfronteer word. Die wêreld bevolking groei steeds ten spyte van die afname in landboukundige produktiwiteit as gevolg van verlaagde grondkwaliteit en die toenemende landboukoste. Die ingebruikneming van landboumetodes wat ekosistemiese dienste verhoog en minder staatmaak op eksterne insette is dus noodsaaklik. Dieretrekking word steeds algemeen in ontwikkelende landebenut, maar dit ontbreek beleids- en beggingsondersteuning om dit meer doeltreffend te maak. Daar is tans algemeen verbreide negatiewe sienswyse oor dieretrekksag wat dit as agterlike en oudmodiese tegnologie beskou. Dié navorsing het ondersoek ingestel om die moontlikheid van dieretrekking as ’n bekostigbare, omgewingsvriendelike en passende tegnologie vir kleinskaalboerdery vas te stel. Die navorsing is’n gevallestudie met kwalitatiwe, etnografiese navorsingsontwerp waarin deelnemerwaarneming kern is tot die insameling van data. ’n Kostewinsteanalise (KWA) was uitgevoer om die lonenheid van beeste te vergelyk met dié van of die huur of die koop van ’n trekker. Die bevindings het getoon dat beeste ’n lonender wyse van trekkrag as trekkers is, nie net in terme van kapitale koste nie, maar ook onderhouds en bedryfskoste. Die beesmis was beide ’n doeltreffende manier om die gevasse van nodige voedingstowwe te voorsien asook om grondbiodiversiteit te verbeter. Die ingebruikneming van beeste het sekere uitdagings vir die boere ingehou in verband met die kennis van hoe diere werk en ander bestuursuitdagings, maar dié was oorkom deur onderrig uit ondervinding. Daar was bevind dat die boer beduidende besparings kan maak aan grondaanvullingskoste hierdie jaar en dat hy die kwaliteit van die beesmis kan beheer om sy behoeftes dien. Die slotsom is dat kleinskaalboere wat kies om dieretrekking eerder as trekkers as trekkrag te gebruik, sal vele voordele hê.

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