1,720,987 research outputs found
Analyzing constraints in the water-energy-food nexus: The case of eucalyptus plantation in Ethiopia
No full textThe study explores complex non-linear decisions in land use allocation, focusing on the competition between cash and food crops. We develop an agent-based model to investigate whether the decision to opt for eucalyptus plantation is a rational choice in the perspective of different farmer types. We analyse the negative externalities (i.e. allelopathic effects) caused by the presence of eucalyptus on the productivity of neighbouring plots and the possible spill-over effects. The findings demonstrate that cultivation of eucalyptus as a cash crop may improve the rural populations' well-being only if there are no physical and economical constraints on access to food and services. The model shows that the allelopathic characteristics of eucalyptus strongly affect the soil fertility, inhibiting the possibility to switch to food crops in the future. In addition, the results of policy scenario simulations indicate that government environmental policies can play a key-role in improving awareness of the ecological effects of eucalyptus plantation on soil fertility in fragile socio-economic contexts characterized by high ecological vulnerability
Local Perceptions of Water-Energy-Food Security: Livelihood Consequences of Dam Construction in Ethiopia
Get PDFThe concept of the water-energy-food (W-E-F) nexus has quickly ascended to become a global framing for resource management policies. Critical studies, however, are questioning its value for assessing the sustainability of local livelihoods. These critiques flow in part from the perception that the majority of influential nexus analyses begin from a large-scale, implicitly top-down perspective on resource dynamics. This can lead to eciency narratives that reinforce existing power dynamics without adequate consideration of local priorities. Here, we present a community-scale perspective on large W-E-F oriented infrastructure. In doing so, we link the current debate on the nexus with alternative approaches to embrace questions of water distribution, political scales, and resource management. The data for this paper come from a survey of 549 households conducted around two large-scale irrigation and hydropower dams in the Upper Blue Nile basin of Ethiopia. The data analysis involved descriptive statistics, logistic analysis, and multinomial logistic analysis.
The two case studies presented show that the impact of dams and the perception thereof is socially diverse. Hydropower dams and irrigation schemes tend to enhance social dierences and may therefore lead to social transformation and disintegration. This becomes critical when it leads to higher vulnerability of some groups. To take these social factors/conditions into consideration, one needs to acknowledge the science-policy interface and make the nexus approach more political. The paper concludes that if the nexus approach is to live up to its promise of addressing sustainable development goals by protecting the livelihoods of vulnerable populations, it has to be applied in a manner that addresses the underlying causes that produce winners and losers in large-scale water infrastructure developments
The Sustainable Livelihoods Approach as an impact assessment tool for development interventions in rural Tigray, Ethiopia : opportunities & challenges
Get PDFMeasuring the impact and sustainability of development programmes requires the development of appropriate assessment tools. This paper examines the Sustainable Livelihoods Approach's (SLA) potential to be transformed to and called in as a practical instrument to evaluate the impact of development interventions in rural Tigray (Northern Ethiopia).
Fieldwork has been carried out in communities in woreda Dogua Tembien using participant observation and open interviews as methods.
Next to more general challenges of defining, measuring and comparing livelihood assets, context specific factors complicate the operationalisation of the SLA as an impact assessment tool in the area. The SLA distinguishes between livelihood assets on the one hand and transforming structures and processes on the other. The latter lend meaning and value to the former. This conceptual distinction is worthy as it makes the two-way interaction between both categories explicit and escapes from reducing institutions, organisations, policies and legislation to context or background. However, in practice the boundaries are fuzzy and not easy to interpret. The example of religion as a cross-cutting organizing principle illustrates this assumption. Moreover the distinction complicates the operationalisation of the SLA as it implies the meaning and value of capitals to be volatile and depending on the prevailing social, institutional and organisational environment. This is exemplified with the big transforming power of policy shifts in the area.
For the SLA to serve as an impact assessment tool, it requires a culture- and policy-sensitive analysis of farmers' asset base. Only a sound understanding of the interactions between livelihood assets and transforming structures and processes can lead to a locally contextualised, meaningful and workable impact assessment tool that measures asset levels using indicators that reflect farmers' own criteria to judge development interventions
The Sustainable Livelihoods Approach as an impact assessment tool for development interventions in rural Tigray, Ethiopia: opportunities & challenges
Get PDFMeasuring the impact and sustainability of development programmes requires the development of appropriate assessment tools. This paper examines the Sustainable Livelihoods Approach's (SLA) potential to be transformed to and called in as a practical instrument to evaluate the impact of development interventions in rural Tigray (Northern Ethiopia).
Fieldwork has been carried out in communities in woreda Dogua Tembien using participant observation and open interviews as methods.
Next to more general challenges of defining, measuring and comparing livelihood assets, context specific factors complicate the operationalisation of the SLA as an impact assessment tool in the area. The SLA distinguishes between livelihood assets on the one hand and transforming structures and processes on the other. The latter lend meaning and value to the former. This conceptual distinction is worthy as it makes the two-way interaction between both categories explicit and escapes from reducing institutions, organisations, policies and legislation to context or background. However, in practice the boundaries are fuzzy and not easy to interpret. The example of religion as a cross-cutting organizing principle illustrates this assumption. Moreover the distinction complicates the operationalisation of the SLA as it implies the meaning and value of capitals to be volatile and depending on the prevailing social, institutional and organisational environment. This is exemplified with the big transforming power of policy shifts in the area.
For the SLA to serve as an impact assessment tool, it requires a culture- and policy-sensitive analysis of farmers' asset base. Only a sound understanding of the interactions between livelihood assets and transforming structures and processes can lead to a locally contextualised, meaningful and workable impact assessment tool that measures asset levels using indicators that reflect farmers' own criteria to judge development interventionssponsorship: VLIRstatus: Publishe
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Impact of Climate Change on Household Poverty in Ethiopia: Application of a Dynamic Micro-Simulation Approach
Get PDFWhile Ethiopia’s economy has grown by seven percent annually in recent years, there are concerns that climate change could jeopardize this growth. The economy’s dependence on rain-fed agriculture that is sensitive to climate change and variability is one of the reasons why poverty is high in the country. This study used a recursive dynamic CGE micro-simulation approach to analyse the impacts of climate change on poverty in the country and across agro-ecological zones. The effect of climate change on household consumption is negative in 2050 for both rural and urban areas. The households at the drought prone areas are the hardest hit where households’ consumption expenditure declines by 30.3 percent. At the national level, total consumption of poor households declines by 21.4 percent while that of the non-poor households declines by 17.0 percent. Accordingly, the impact of climate change raises the national poverty incidence from 29.6 percent in 2010/11 to 45.15 percent in 2050. Climate change also increases the inequality among households. Hence, different adaptation and mitigation measures are vital if the country is to achieve its growth and poverty reduction targets
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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