1,354,549 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
A classificatory approach integrating fuzzy set theory and permutation techniques for land cover analysis: a case study on a degrading area of the Rift Valley (Ethiopia)
No full textWe suggest a classificatory approach for land cover analysis that integrates fuzzy set theory with
permutation techniques. It represents a non parametric alternative and/or a complement of
traditional multivariate statistics when data are scarce, missing, burdened with high degree of
uncertainty and originated from different sources and/or times. According to this approach, the
Operational Geographic Units (OGUs) in which landscape is subdivided and sampled are classified
with hierarchical clustering methods. The clusters of a classification which are significantly sharp
are used to define fuzzy sets. In this way, the original data scores are transformed by degrees of
belonging. We introduce the concepts of endogenous and exogenous fuzzy sets and we suggest to
apply the Mantel test between the similarity matrices of these fuzzy sets to test the predictivity of
internal variables with respect to external variables. The approach is applied to OGUs
corresponding to the smallest administrative units (kebeles) of the Ethiopian Rift Valley, a
degrading area with high risk of further degradation. We found that: 1) there is a high correlation
between geophysical features of the landscape (geology, rainfall and elevation) and some indicators
of the human pressure such as land use/cover, land management for livestock breeding and human,
household and livestock densities, 2) there is a high correlation between land degradation, measured
with relative loss of Normalized Difference Vegetation Index (NDVI) and the human pressure.
However, the correlation is higher when the human pressure is considered in the geophysical
context of the landscape. The approach can be easily applied to produce maps useful for planning
purposes thanks to geographical information system (GIS) technology that is becoming available at
low cost even to small administrative units of developing countries
Variations on the Author
No full text“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
No full textWe 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
sj-docx-3-smo-10.1177_20503121231162722 – Supplemental material for Women’s decision-making power regarding family planning use and associated factors in Ethiopia: A systematic review and meta-analysis
No full textSupplemental material, sj-docx-3-smo-10.1177_20503121231162722 for Women’s decision-making power regarding family planning use and associated factors in Ethiopia: A systematic review and meta-analysis by Etsay Woldu Anbesu, Mussie Alemayehu, Dejen Kahsay Asgedom and Fikru Yigezu Jeleta in SAGE Open Medicine</p
sj-docx-1-smo-10.1177_20503121221135876 – Supplemental material for Willingness to pay for community-based health insurance and associated factors in Ethiopia: A systematic review and meta-analysis
No full textSupplemental material, sj-docx-1-smo-10.1177_20503121221135876 for Willingness to pay for community-based health insurance and associated factors in Ethiopia: A systematic review and meta-analysis by Etsay Woldu Anbesu, Oumer Abdulkadir Ebrahim and Nigus Desalegn Takele in SAGE Open Medicine</p
sj-doc-1-smo-10.1177_20503121231162722 – Supplemental material for Women’s decision-making power regarding family planning use and associated factors in Ethiopia: A systematic review and meta-analysis
No full textSupplemental material, sj-doc-1-smo-10.1177_20503121231162722 for Women’s decision-making power regarding family planning use and associated factors in Ethiopia: A systematic review and meta-analysis by Etsay Woldu Anbesu, Mussie Alemayehu, Dejen Kahsay Asgedom and Fikru Yigezu Jeleta in SAGE Open Medicine</p
Application of a Spatial Decision Support System (SDSS) to Reduce Soil Erosion in Northern Ethiopia.
No full textsj-docx-2-smo-10.1177_20503121231162722 – Supplemental material for Women’s decision-making power regarding family planning use and associated factors in Ethiopia: A systematic review and meta-analysis
No full textSupplemental material, sj-docx-2-smo-10.1177_20503121231162722 for Women’s decision-making power regarding family planning use and associated factors in Ethiopia: A systematic review and meta-analysis by Etsay Woldu Anbesu, Mussie Alemayehu, Dejen Kahsay Asgedom and Fikru Yigezu Jeleta in SAGE Open Medicine</p
sj-docx-3-smo-10.1177_20503121221135876 – Supplemental material for Willingness to pay for community-based health insurance and associated factors in Ethiopia: A systematic review and meta-analysis
No full textSupplemental material, sj-docx-3-smo-10.1177_20503121221135876 for Willingness to pay for community-based health insurance and associated factors in Ethiopia: A systematic review and meta-analysis by Etsay Woldu Anbesu, Oumer Abdulkadir Ebrahim and Nigus Desalegn Takele in SAGE Open Medicine</p
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