1,720,962 research outputs found
Population Status and Feeding Ecology of the Ethiopian Wolf (Canis simensis) in and around Borena - Sayint National Park, South Wollo, Ethiopia
Get PDFA study on the population status, distribution and feeding ecology of the Ethiopian wolf (Canis simensis) was carried out in the Borena-Sayint National Park, Southern Ethiopia during October, 2010 – March, 2011 including wet and dry seasons. Distance sampling line-transect count method was used to estimate the population of Ethiopian wolf. A total of 29 and 34 wolves were counted during wet and dry seasons, respectively. The sex ratio of adult male to adult female was 2.5:1.00. Pack size changed seasonally. The sex structure of Ethiopian wolf was adult male 34.48%, adult female 13.79%, sub-adult males 27.59%, sub-adult females 13.79 % and young 10.34%. The age ratio of adult to young was 1:4.67 both during dry and wet seasons. There was no significant difference among the total population number, age and sex categories, and the pack size during dry and wet seasons (P > 0.05). The mean pack size was 3 ± 0.25. The pack composition varied with season, forming larger packs during the dry season. The occurrence of food items in the scats significantly differed (P < 0.01). Rodents were the principal prey items with 69.2% frequency of occurrence. Grass blades and bird feathers also formed the diet components. Among livestock, remains of sheep were identified in few scats. Distribution and vegetation utilization of the Ethiopian wolf showed a marked preference for Lobelia-Hypericum habitats. However, there was a seasonal change in the preference of habitat. The main threats of the Ethiopian wolves in the study area were grass collection, livestock grazing, encroachment and related environmental problems. It is necessary to educate the local people and conservation issues of the Ethiopian wolf to enhance the coexistence of the Ethiopian wolf with human beings. Keywords: Ethiopian wolf, feeding ecology, habitat preference, population status, threat
Wildlife Ecology and Conservation
No full textWildlife Ecology and Conservation by Mundanthra Balakrishnan, published by the Scientific Publishers, Jodhpur/New Delhi (India), with a forward by Prof. Dr. Walter R. Erdelen, Former Assistant Director-General for Natural Sciences, UNESCO is not just another book on wildlife; its primary focus is on education. Accordingly, its design reflects the series focus on “self-directed learning”, as pointed out in the preface at the beginning of the book by the series editor, Professor Anantanarayanan Raman of Charles Sturt University, Australia. The book uses the right approach, viz. a connotation of wildlife as encompassing all organisms not directly under human control and which build the fabric of our “natural ecosystem
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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