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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
Assessment of breeding value of selected inbred lines of maize (Zea mays L.)
No full textCelem pracy była ocena wartości hodowlanej 10 linii wsobnych o ziarnie zębokształtnym (dent) i 7 linii o ziarnie szklistym (flint) kukurydzy na podstawie plonowania 70 mieszańców eksperymentalnych powstałych w wyniku czynnikowego układu krzyżowania „dent × flint”. Materiał badawczy stanowiły linie wykorzystywane w programie hodowlanym przed 40. laty i obecnie. Poza linią F2, którą wyhodowano w INRA we Francji, pozostałe linie zostały wyhodowane w Smolicach. Przeprowadzono dwie oddzielne serie doświadczeń porównawczych: dla 70 mieszańców eksperymentalnych oraz dla 17 rodzicielskich linii wsobnych w dwóch sezonach wegetacyjnych 2005 i 2006 oraz trzech miejscowościach. Wykazano, że elitarne linie sprzed 40. lat okazały się nieprzydatne do bezpośredniego wykorzystania w obecnie prowadzonym programie hodowli mieszańcowej kukurydzy. Wartości per se linii nie są wystarczające do prognozowania wartości cech ilościowych ich potomstwa mieszańcowego. Najwyższą ocenę wartości hodowlanej, mierzoną ogólną zdolnością kombinacyjną, plennością samej linii i jej wczesnością per se, uzyskała linia o ziarnie szklistym S61328. Uzyskany postęp genetyczny elitarnych linii wsobnych tworzących formuły mieszańców rejestrowanych przez Smolice w latach 1971–2006 wyniósł 59,4 kg/rok.The main objective of the present study was to evaluate the breeding value of 17 (10 dent and 7 flint) inbred lines of maize based on yield performance of 70 hybrids produced according to North Carolina II design “dent × flint”. Material consisted of lines used in a breeding program 40 years ago and nowadays. Except the line F2, which have been developed in the INRA in France, other lines have been bred in Smolice. Two separate series of comparative trials were carried out: for 70 experimental hybrids and the 17 parental inbred lines in two growing seasons (2005; 2006), and three locations. It has been shown that 40-year-old elite lines have proved to be unsuitable for direct use in the currently run maize breeding program. The values per se of inbred lines are not sufficient to predict the value of quantitative traits of their hybrid offspring. The flint line S61328 obtained the highest score of breeding value, measured by general combining ability, grain yield of the line itself and its earliness per se. The breeding progress of elite inbred lines used in formulas of Smolice’s hybrid varieties registered between 1971–2006 has been estimated on 59.4 kg/year
Ocena wartości hodowlanej wybranych linii wsobnych kukurydzy (Zea mays L.)
Get PDFThe main objective of the present study was to evaluate the breeding value of 17 (10 dent and 7 flint) inbred lines of maize based on yield performance of 70 hybrids produced according to North Carolina II design “dent × flint”. Material consisted of lines used in a breeding program 40 years ago and nowadays. Except the line F2, which have been developed in the INRA in France, other lines have been bred in Smolice. Two separate series of comparative trials were carried out: for 70 experimental hybrids and the 17 parental inbred lines in two growing seasons (2005; 2006), and three locations. It has been shown that 40-year-old elite lines have proved to be unsuitable for direct use in the currently run maize breeding program. The values per se of inbred lines are not sufficient to predict the value of quantitative traits of their hybrid offspring. The flint line S61328 obtained the highest score of breeding value, measured by general combining ability, grain yield of the line itself and its earliness per se. The breeding progress of elite inbred lines used in formulas of Smolice’s hybrid varieties registered between 1971–2006 has been estimated on 59.4 kg/year.Celem pracy była ocena wartości hodowlanej 10 linii wsobnych o ziarnie zębokształtnym (dent) i 7 linii o ziarnie szklistym (flint) kukurydzy na podstawie plonowania 70 mieszańców eksperymentalnych powstałych w wyniku czynnikowego układu krzyżowania „dent × flint”. Materiał badawczy stanowiły linie wykorzystywane w programie hodowlanym przed 40. laty i obecnie. Poza linią F2, którą wyhodowano w INRA we Francji, pozostałe linie zostały wyhodowane w Smolicach. Przeprowadzono dwie oddzielne serie doświadczeń porównawczych: dla 70 mieszańców eksperymentalnych oraz dla 17 rodzicielskich linii wsobnych w dwóch sezonach wegetacyjnych 2005 i 2006 oraz trzech miejscowościach. Wykazano, że elitarne linie sprzed 40. lat okazały się nieprzydatne do bezpośredniego wykorzystania w obecnie prowadzonym programie hodowli mieszańcowej kukurydzy. Wartości per se linii nie są wystarczające do prognozowania wartości cech ilościowych ich potomstwa mieszańcowego. Najwyższą ocenę wartości hodowlanej, mierzoną ogólną zdolnością kombinacyjną, plennością samej linii i jej wczesnością per se, uzyskała linia o ziarnie szklistym S61328. Uzyskany postęp genetyczny elitarnych linii wsobnych tworzących formuły mieszańców rejestrowanych przez Smolice w latach 1971–2006 wyniósł 59,4 kg/rok
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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