Related items
Showing items related by metadata.
-
ArticleMapping the benefit-cost ratios of interventions against bovine trypanosomosis in Eastern Africa 2015
Also available in:
No results found.This study builds upon earlier work mapping the potential benefits from bovine trypanosomosis control and analysing the costs of different approaches. Updated costs were derived for five intervention techniques: trypanocides, targets, insecticide-treated cattle, aerial spraying and the release of sterile males. Two strategies were considered: continuous control and elimination. For mapping the costs, cattle densities, environmental constraints, and the presence of savannah or riverine tsetse spe cies were taken into account. These were combined with maps of potential benefits to produce maps of benefit-cost ratios. Author’s Accepted Manuscript, published with permission. -
ArticleMapping the economic benefits to livestock keepers from intervening against bovine trypanosomosis in Eastern Africa 2014
Also available in:
No results found.This study builds upon earlier work mapping the potential benefits from bovine trypanosomosis control and analysing the costs of different approaches. Updated costs were derived for five intervention techniques: trypanocides, targets, insecticide-treated cattle, aerial spraying and the release of sterile males. Two strategies were considered: continuous control and elimination. For mapping the costs, cattle densities, environmental constraints, and the presence of savannah or riverine tsetse species were taken into account. These were combined with maps of potential benefits to produce maps of benefit-cost ratios. The results illustrate a diverse picture, and they clearly indicate that no single technique or strategy is universally profitable. For control using trypanocide prophylaxis, returns are modest, even without accounting for the risk of drug resistance but, in areas of low cattle densities, this is the only approach that yields a positive return. Where cattle densities are sufficient to support it, the use of insecticide-treated cattle stands out as the most consistently profitable technique, widely achieving benefit-cost ratios above 5. In parts of the high-potential areas such as the mixed farming, high-oxen-use zones of western Ethiopia, the fertile crescent north of Lake Victoria and the dairy production areas in western and central Kenya, all tsetse control strategies achieve benefit-cost ratios from 2 to over 15, and for elimination strategies, ratios from 5 to over 20. By contrast, in some areas, notably where cattle densities are below 20 per km2, the costs of interventions against tsetse match or even outweigh the benefits, especially for control scenarios using aerial spraying or the deployment of targets where both savannah and riverine flies are present. If the burden of human African trypanosomosis were factored in, the benefit-cost ratios of some of the low-return areas would be considerably increased. Comparatively, elimination strategies give rise to higher benefit-cost ratios than do those for continuous control. However, the costs calculated for elimination assume problem-free, large scale operations, and they rest on the outputs of entomological models that are difficult to validate in the field. Experience indicates that the conditions underlying successful and sustained elimination campaigns are seldom met. By choosing the most appropriate thresholds for benefit-cost ratios, decision-makers and planners can use the maps to define strategies, assist in prioritising areas for intervention, and help choose among intervention techniques and approaches. The methodology would have wider applicability in analysing other disease constraints with a strong spatial component. -
DocumentWinDASI: A Software for Cost-Benefit Analysis of Investment Projects. Installation Note 2005
Also available in:
No results found.This module contains the WinDASI software and a note that illustrates how to carry out the installation of WinDASI on your personal computer. WinDASI is a software for Cost-benefit Analysis (CBA) of investment projects that allows the analysis of the financial and economic viability of investments. In particular, it facilitates the systematic storage of data for Cost-Benefit Analysis and allows to calculate: a) flows of physical quantities of outputs, inputs and investment items; b) flows of cur rent, discounted and cumulative costs, benefits, and net benefits; c) flows of incremental (With-Without project) current, discounted and cumulative net benefits; and e) indicators of financial and economic viability such as the Net Present Value (NPV), the Internal Rate of Return (IRR), the Benefit/Cost Ratio, (BCR), the Switching Values (SVs) and Sensitivity tests. Instructions are provided on how to carry out calculations for the different components of an investment project, notably: plans, zones and projects (i.e. at different levels of aggregation). In addition, the software can deal with comparisons of different projects and alternative scenarios (e.g. with–project versus without-project), and normal and phased modes of calculation.
Users also downloaded
Showing related downloaded files
No results found.