1,721,025 research outputs found
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
Improving penetration of copper in micronized copper azole pressure treated Michigan red pine
Get PDFABSTRACTIMPROVING PENETRATION OF COPPER IN MICRONIZED COPPER AZOLE PRESSURE TREATED MICHIGAN RED PINEBy John RademacherMichigan red pine Pinus resinosa is a critical part of the Great Lakes region lumber industry. The species is used for various applications such as telephone poles, dimensional lumber, decking and various other uses. This species is native to the Great Lakes meaning lower shipping costs and the creation of local jobs. The goal of this study overall was to improve the penetration of MCA pressure treated red pine. Using duration, steaming and penetration enhancers we were able to increase the penetration to allow some samples to pass the AWPA penetration standard. We found that the average solution uptake of the treated samples was 47% for spring samples, 106% for summer samples and 79% for fall and winter samples. Steaming alone created better penetration than non-steamed samples but with the addition of penetration enhancers we were able to boost the penetration to levels we had not observed with other treatments as indicated above. Penetration enhancers alone greatly increased the penetration but the steaming would allow for a higher moisture content, which in turn swelled the wood allowing PE to aid greater penetration. Anatomically, red pine has issues with high resin content and pit aspiration, which was observed but a conclusion has was not reached as to what causes the pit aspiration or why aspiration is sporadic in red pine samples regardless of drying or treatingThesis (M.S.)--Michigan State University. Forestry, 2011Includes bibliographical reference
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
Farmer livelihoods strategies and the impact of agroforestry practices on parkland systems in Kedougou Senegal
No full text"Farmers throughout West Africa have always faced adverse conditions and high vulnerability with regards to management of their agroecological systems, but climate change poses a new challenge to the sustainability of farming systems. Through field research conducted in the department of Kedougou in southwestern Senegal, I identified and analyzed livelihood strategies, and investigated the effects of climate change on farmer's management of their agroecological systems. Using the rural livelihood framework, I used focus group discussions to assess farmers' management approaches when facing climate related disturbances to agroecological systems. With the survey results, I used a regression model to analyze whether or not agroforestry has impacted farmer livelihood with regards to the valuation of on-farm activities through crop yields and livestock holdings. The lack of statistical significance from the regression model might point towards a lack of impact from agroforestry practices; however, the multiple co-benefits of agroforestry cannot be overlooked to reducing vulnerability. This study shows that West African farmers generally use approaches that enhance the resiliency of their agroecological systems to sustain their livelihoods when facing adverse environmental challenges, but that agroforestry has not shown to impact livelihoods in terms of production."--Page ii.(M.S.)--Michigan State University. Forestry, 2017Includes bibliographical reference
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
Effects of conservation policies on forest cover change in panda habitat regions, China
Get PDFTo restore forests and protect remaining natural forests, in 1998 the Chinese government initiated two nationwide conservation policies, the Natural Forest Conservation Program (NFCP) and the Grain-To-Green Program (GTGP). This study evaluated the effects of conservation policies and other potential driving forces on forest-cover change in 108 townships located in the Qinling Mountains and Sichuan Giant Panda Sanctuary (both known giant panda habitat regions) between 2001 and 2008. Forest-cover change was evaluated using land-cover products derived from the Moderate Resolution Imaging Spectroradiometer (MODIS). Most townships in both regions showed either stable or increased forest cover. An Ordinary Least Square (OLS) regression model was applied to identify potential driving forces of this forest-cover change. The model suggests that conservation policies had significantly positive effects on forest cover, while population density, percentage of agricultural population, road density, and initial forest cover (i.e., in 2001) had significantly negative effects. This study helps to clarify not only the patterns of forest-cover change after conservation policy implementation, but also to identify the impacts of potential driving forces of forest-cover change, at township level. This information could be, in turn, useful in the development of future giant panda habitat restoration projects.Thesis (M.S.)--Michigan State University. Department of Fisheries and Wildlife, 2010Includes bibliographical references (pages 45-58
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