1,720,971 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
Drivers of water use in the agricultural sector of the European Union 27
Get PDFPopulation growth and the uncertain hazards that accompany climate change have put increasing pressure on the management and sustainability of water, a vital but scarce environmental resource. A decrease in the water quality and quantity would have a direct impact on agriculture, the economic sector that uses the most of it, and its domestic and international supply chain linkages. As one of the largest agricultural producer in the world (14% of world agricultural production), the European Union and its twenty-seven members (EU27) are particularly sensitive to changes in water availability. To better understand the evolution of the latter, we perform a structural decomposition analysis over the 1995-2010 period. Based on the recently-released EXIOBASE 3 database, we examine in depth how changes in water input coefficients, in final demand and in technology have affected changes in water use in agriculture and more especially in crop production. Indeed, while agriculture represents 70% of all the water use, crop production consumes as much as 99% of the former while only 1% is attributed to livestock. Our results show that the more developed EU members who are also the largest crop producers have experienced an increase in water use that is mostly driven by changes in technology, i.e. the water content of the inputs used in the production process has increased over time. One exception is Germany where it is an increase in water intensity, the amount of water used per unit of output, that has driven the increase in water use. On the other hand, several Mediterranean countries, where water scarcity has been a problem for years, have decreased their water consumption mostly thanks to an improvement in their water intensity. The only exception is Spain where its agricultural sector continues to consume vast amounts of water in spite of its increasing scarcity (Dietzenbacher and Velasquez, 2007). Results by crop are consistent with the results at the aggregated level except for vegetables of which water use changes have been primarily driven by changes in final demand and water intensity.Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2021-08-01The student, Maria Gerveni, accepted the attached license on 2019-07-11 at 06:58.The student, Maria Gerveni, submitted this Thesis for approval on 2019-07-11 at 07:32.This Thesis was approved for publication on 2019-07-15 at 13:31.DSpace SAF Submission Ingestion Package generated from Vireo submission #14261 on 2019-11-26 at 13:05:20Made available in DSpace on 2019-11-26T20:49:27Z (GMT). No. of bitstreams: 3
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Previous issue date: 2019-07-15Embargo set by: Seth Robbins for item 112956
Lift date: 2021-11-26T20:49:41Z
Reason: Author requested U of Illinois access only (OA after 2yrs) in Vireo ETD systemU of I Only Restriction Lifted for Item 112956 on 2021-11-27T10:15:26Z
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
Drivers of water use in the agricultural sector of the European Union 27
No full textPopulation growth and the uncertain hazards that accompany climate change have put increasing pressure on the management and sustainability of water, a vital but scarce environmental resource. A decrease in the water quality and quantity would have a direct impact on agriculture, the economic sector that uses the most of it, and its domestic and international supply chain linkages. As one of the largest agricultural producer in the world (14% of world agricultural production), the European Union and its twenty-seven members (EU27) are particularly sensitive to changes in water availability. To better understand the evolution of the latter, we perform a structural decomposition analysis over the 1995-2010 period. Based on the recently-released EXIOBASE 3 database, we examine in depth how changes in water input coefficients, in final demand and in technology have affected changes in water use in agriculture and more especially in crop production. Indeed, while agriculture represents 70% of all the water use, crop production consumes as much as 99% of the former while only 1% is attributed to livestock. Our results show that the more developed EU members who are also the largest crop producers have experienced an increase in water use that is mostly driven by changes in technology, i.e. the water content of the inputs used in the production process has increased over time. One exception is Germany where it is an increase in water intensity, the amount of water used per unit of output, that has driven the increase in water use. On the other hand, several Mediterranean countries, where water scarcity has been a problem for years, have decreased their water consumption mostly thanks to an improvement in their water intensity. The only exception is Spain where its agricultural sector continues to consume vast amounts of water in spite of its increasing scarcity (Dietzenbacher and Velasquez, 2007). Results by crop are consistent with the results at the aggregated level except for vegetables of which water use changes have been primarily driven by changes in final demand and water intensity.U of I OnlyAuthor requested U of Illinois access only (OA after 2yrs) in Vireo ETD syste
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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