1,721,008 research outputs found
sj-docx-1-asw-10.1177_11786221221150183 – Supplemental material for Analyzing Wetland Dynamics Using Geospatial Techniques: A Case of Abay Choman and Jimma Geneti Watershed, Horo Guduru Wollega Zone, Western Ethiopia
No full textSupplemental material, sj-docx-1-asw-10.1177_11786221221150183 for Analyzing Wetland Dynamics Using Geospatial Techniques: A Case of Abay Choman and Jimma Geneti Watershed, Horo Guduru Wollega Zone, Western Ethiopia by Mitiku Badasa Moisa, Tadesse Weyuma Bulto, Birhanu Chalchisa Werku, Yifru Waktole Berkessa, Abdella Kosa Chebo, Daniel Assefa Negash and Dessalegn Obsi Gemeda in Air, Soil and Water Research</p
Perceptions of Climate Change among Natural Resources Management Students at Jimma University, Ethiopia
Full text linkClimate change is any change from normal condition of the atmosphere. These changes include increase or decrease in temperature, rainfall fluctuations, wind patterns change, melting of snow and others. Increasing of temperature and rainfall fluctuations have been escalating the exposure of the country to drought and environmental problems. The study was conducted in Jimma University College of Agriculture and Veterinary Medicine, Department of Natural Resources Management, to examine the perception of students on climate change. Student
The impacts of climate change on African continent and the way forward
No full textThis paper reviews several studies on the impacts of climate change on developing countries in Africa,
one of the most vulnerable continents due to lack of financial, technical and institutional capacity to
cope with the impacts of climate change. Due to various anthropogenic activities, greenhouse gases are
increasing in the atmosphere at an alarming rate which leads to extreme temperature and flooding, loss
of soil fertility, low agricultural productions (both crops and livestock’s), biodiversity loss, risk of water
stress, and prevalence of various diseases. It is predicted that the temperature in Africa continent will
rise by 2 to 6°C over the next 100 years. In terms of economic, the Sub-Saharan Africa will lose a total of
US$26 million by 2060 due to climate change. The increasing occurrence of flooding and drought is also
another predicted problem for Africa. Climate change can set back development of nations. Even
though African countries are working on adaptation and mitigation options to minimize the adverse
effects, climate change is expected to cause large damage to their economy. Thus, climate change
adaptation and mitigation options require greater attention to ensure future food security and well-being
of African peoples
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Assessment of Land use and Land Cover changes and Farmers’ Perception towards land Cover Changes in Setema District of Jimma zone, Southwestern Ethiopia
No full textLand use and land cover change (LULCC) is the result of the long-term process of natural
and anthropogenic activities that have been practiced on the land. Assessments of LULCC
and farmer perceptions towards this change over the last 30 years (1992–2023) were
investigated to determine the rate and extent of the LULCC pattern over the past three
decades in Setema district, South-West Ethiopia. The study used primary data collected from
the local community, community leaders, and Woreda experts, and secondary data was
collected from free available satellite image archives and related documents. The study used
ArcGIS software, SPSS software, and, Microsoft Excel 2010. The study area was classified
into five LULCC categories based on field stud
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