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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

Light interception and water use in boundary planting : agroforestry systems

Okorio, John January 2000 (has links)
No description available.
2

Interpreting ICT policy processes in developing countries : a case study of Uganda

Bardelli-Danieli, Andrea January 2011 (has links)
Several studies suggest that the diffusion of information and communication technologies (ICTs) in developing countries (DCs) can help such countries achieve national development goals - especially if accompanied by appropriate government policies designed to regulate and promote the use and the diffusion of ICTs in the national context. Over the past few years 'ICT policy' has thus become something worthy of academic attention, in particular in the ambit of ICT-for-development (ICT4D) literature. Scholarly studies on the subject have so far focused however primarily on policy content, and have often been prescriptive and/or evaluative in nature. Relatively less attention has been paid instead to the processes by which ICT policy is made in DCs - a lacuna reflected also in the relative scarcity, in the realm of ICT4D literature, of detailed theoretical frameworks with which to study ICT policymaking practice in DCs. This study intends to help fill this lacuna, by proposing an innovative framework for the analysis of ICT policy processes in DCs, and subjecting such a framework to a first 'proof of concept', through its application to a particular case (ICT policymaking in Uganda). In recognition of the importance of the cognitive aspects of policy practice, the framework proposed is interpretive in nature, and is organised around three 'movements', or steps: an analysis of the linguistic and non-linguistic constructs employed by policy actors to articulate discourse on ICT policymaking; an analysis of the key discourses around ICT policy constructed by policy actors in specific settings; and an analysis of the composition and the strength of the 'alliances', or coalitions, of actors that construct and propagate specific discourses in such settings. The ultimate purpose of this type of analysis is to understand how specific discourses on, or 'versions' of the ICT policy process gain particular purchase and acceptance in given national settings, thereby providing ICT policy actors with elements for reflection on the practices they are involved in. The framework proposed is particularly innovative in that integrates elements derived from mainstream political science and policy analysis literature - thus going some way in solidifying theorization in the ambit of ICT4D research. The study draws conclusions at two levels: at case level, findings indicate that Ugandan discourse around ICT policymaking appears to be constrained by the existence of a powerful, overall political discourse that defines ICT policy as necessarily 'participative'; at the level of theory and method, findings suggest that the framework proposed appears to be a viable and useful one for research on ICT policymaking practice in DCs.
3

Performance of farm trees in farming systems in Mubende district, Uganda

Krombholz, Max Lukas 15 October 2018 (has links)
The research of this thesis will focus on the performance of farm forestry trees in Mubende district, Uganda. In order to this, the research will help to fill the existing knowledge gap on the performance of farm forestry trees of east Africa specially Uganda. The conducted tree species are Markhamia lutea, Ficus natalensis, Mangifera indica, Artocarpus heterophyllus, Anitaris toxicaria, Persea americana, Albizia coriaria and Spathodea campanulata. The selection of the trees was mainly driven through the availability of age information. The trees were measured in height, age, DBH, length of commercial stem, diameter at specific height and visual observations e.g. occurrence and stem quality. To compare the performance of the conducted tree species a regression analysis with eight different functions was carried out for each tree species. The results are reproducible Stand- Height-Curves, height curves, DBH curves and curves for the single tree volume. The decision on the best curve was made on their biological plausibility and their statistical calculations. Additionally, the farmers of the trees were interviewed about their tree species for e.g. purposes of the tree, value of the wood and their own impressions on the growth of the tree species. The recommendation for the best applicable function is the Petterson function for the Stand-Height- Curve and the function of Richards for the height-, DBH- and single tree volume curve. Still these functions shouldn’t be used without comparison to other functions, especially because the used functions were developed for tree stand conditions and not specially for agroforestry conditions were the tree growth is in general higher. Additionally, an upscaling and prediction of the monetary tree values is made on the basis of the single tree volume curves and the interview results. The prediction of the farmers possible income through the cultivation of trees is made for Markhamia lutea, Ficus natalensis, Anitaris toxicaria and Albizia coriaria and assumes that 100 trees are planted on one hectare. Albizia coriaria 3.630 € achieves the highest possible extra income for the farmer followed by Ficus natalensis with 1.300 €, Anitaris toxicaria with 910€ and Markhamia lutea with 880 €. This thesis gives an example on the performance and possible monetary value of tree species in Mubende district, Uganda. Further investigation is needed to fill the knowledge gap in the performance of east African tree species and their values completely. Keywords: performance, tree growth, utilization, Uganda, East-Africa

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