1,720,965 research outputs found
Food types and feeding ecology of African Civets (Civettictis civetta) in Jimma, Ethiopia
No full textTypes d’aliments et écologie alimentaire de la Civette africaine (Civettictis civetta) en région de Jimma, Éthiopie. — Les types d’aliments et l’écologie alimentaire de Civettes africaines ont été étudiés d’août 2005 à février 2006 dans trois zones (Kito, Beda Buna et Jeran) dans la région de Jimma en province d’Oromia, Éthiopie. Des fèces fraîches ont été récoltées et analysées au laboratoire. Il n’y avait aucune différence significative entre les différents sites dans la variété des aliments. Durant la saison des pluies, 21 types de proie ont été identifiés contre 26 durant la saison sèche. Des variations significatives entre les saisons dans les proportions des types d’aliments ont été observées dans tous les sites. Les civettes éthiopiennes étudiées se sont avérées omnivores, complétant par des fruits, des oeufs, des poissons et des insectes leur régime carné (issu de la chasse, e. g. rongeurs et oiseaux, ou d’un comportement charognard).Daniel Wondmagegne, Eniang Edem A., Bekelle Afework, Balakrishnan Mundanthra, Egwali Edwin C. Food types and feeding ecology of African Civets (Civettictis civetta) in Jimma, Ethiopia. In: Revue d'Écologie (La Terre et La Vie), tome 63, n°3, 2008. pp. 283-288
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
Ecological and Economic Importance of Bats (Order Chiroptera)
No full textOrder Chiroptera is the second most diverse and abundant order of mammals with great physiological and ecological diversity. They play important ecological roles as prey and predator, arthropod suppression, seed dispersal, pollination, material and nutrient distribution, and recycle. They have great advantage and disadvantage in economic terms. The economic benefits obtained from bats include biological pest control, plant pollination, seed dispersal, guano mining, bush meat and medicine, aesthetic and bat watching tourism, and education and research. Even though bats are among gentle animals providing many positive ecological and economic benefits, few species have negative effects. They cause damage on human, livestock, agricultural crops, building, and infrastructure. They also cause airplane strike, disease transmission, and contamination, and bite humans during self-defense. Bat populations appear to be declining presumably in response to human induced environmental stresses like habitat destruction and fragmentation, disturbance to caves, depletion of food resources, overhunting for bush meat and persecution, increased use of pesticides, infectious disease, and wind energy turbine. As bats are among the most overlooked in spite of their economical and ecological importance, their conservation is mandatory
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
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