1,720,954 research outputs found
An Assessment of Surface Water Availability in the Pungwe Sub Catchment and Development of an Appropriate Water Allocation Framework
No full textPungwe River is a transboundary river which is shared between Zimbabwe (4.7% of land
area) and Mozambique (97.3% of land area). The two governments are preparing a Bilateral
Agreement on the management of water in the Pungwe River basin to allow part of the total
runoff generated in Zimbabwe to flow to Mozambique. This is in line with the SADC and
other International protocols governing the use of international Rivers. Zimbabwe needs to
have a water allocation system that is equitable and fair to comply with this agreement. Part
of the catchment from Zimbabwe is not gauged further constraining the testing of alternative
allocation systems that can be adopted by Zimbabwe. The aim of this research is to assess
surface water availability in the tributaries of Pungwe River and Honde River and develop a
water allocation framework to guide Pungwe sub-catchment council in water allocation.
The Pitman model was used to generate surface runoff for the Pungwe River and Honde
River catchments. The Pitman model was calibrated and validated using observed runoff for
three gauging stations (F14, F22 and F23). A WAFLEX model was set up to evaluate
different water allocation systems. The models were run to assess the performance of the
different water allocation systems in terms of water shortages for different users within the
sub catchment and satisfying proposed international flow obligations. Three water allocation
practices were investigated namely proportional, proportional combined with priority and
market based water allocation system.
The Pitman model was found to be suitable for modelling the Pungwe Sub-catchment area
with model results providing a NSE value of 0.7 and R2 value of 0.8 between observed and
modelled stream flows. Results from the WAFLEX model showed that international
obligations would be 100% satisfied under all the water allocation practices in Pungwe
micro-catchment. However shortages were noted in Honde micro-catchment. Proportional
combined with priority water allocation practice improved satisfaction with an average 20%
agricultural water uses in Pungwe micro-catchment and 10% in Honde micro-catchment.
Proportional combined with priority water allocation practice was considered the best
practice to be used by the sub catchment. The data generated from this research has to be
incorporated in the allocation of permits in the sub catchment and transboundary management
of the Pungwe Basin
An assessment of surface water availability in the Pungwe Sub Catchment and development of an appropriate water allocation framework.
No full textPungwe River is a transboundary river which is shared between Zimbabwe (4.7% of land area) and Mozambique (97.3% of land area). The two governments are preparing a Bilateral Agreement on the management of water in the Pungwe River basin to allow part of the total runoff generated in Zimbabwe to flow to Mozambique. This is in line with the SADC and other International protocols governing the use of international Rivers. Zimbabwe needs to have a water allocation system that is equitable and fair to comply with this agreement. Part of the catchment from Zimbabwe is not gauged further constraining the testing of alternative allocation systems that can be adopted by Zimbabwe. The aim of this research is to assess surface water availability in the tributaries of Pungwe River and Honde River and develop a water allocation framework to guide Pungwe sub-catchment council in water allocation.
The Pitman model was used to generate surface runoff for the Pungwe River and Honde River catchments. The Pitman model was calibrated and validated using observed runoff for three gauging stations (F14, F22 and F23). A WAFLEX model was set up to evaluate different water allocation systems. The models were run to assess the performance of the different water allocation systems in terms of water shortages for different users within the sub catchment and satisfying proposed international flow obligations. Three water allocation practices were investigated namely proportional, proportional combined with priority and market based water allocation system.
The Pitman model was found to be suitable for modelling the Pungwe Sub-catchment area with model results providing a NSE value of 0.7 and R2 value of 0.8 between observed and modelled stream flows. Results from the WAFLEX model showed that international obligations would be 100% satisfied under all the water allocation practices in Pungwe micro-catchment. However shortages were noted in Honde micro-catchment. Proportional combined with priority water allocation practice improved satisfaction with an average 20% agricultural water uses in Pungwe micro-catchment and 10% in Honde micro-catchment. Proportional combined with priority water allocation practice was considered the best practice to be used by the sub catchment. The data generated from this research has to be incorporated in the allocation of permits in the sub catchment and transboundary management of the Pungwe Basin.,WaterNe
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
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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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