1,721,035 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Single-cell genomics of Treponema and other microbiota isolated from xylophagous termites
No full textDispelling the Myths Behind First-author Citation Counts
Full text linkWe 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
Variation in the structure and function of invertebrate-associated bacterial communities
Full text linkMicroorganisms are intricately involved in the ecology of many insects, often
contributing to host fitness and forming evolutionarily stable associations. The
interactions between hosts and microbes can significantly alter their
evolutionary trajectories, enabling them to adapt to novel environmental
conditions. In this thesis I have examined how host ecology can shape the
interactions of bacteria with insects of agricultural and epidemiological
importance. I have described the bacterial communities associated with
Bactrocera oleae (the olive fruit fly) and generated draft genome sequences
for several members of the gut microbiota, including the symbiotic bacterium
“Candidatus Erwinia dacicola”. Comparative genomic analyses indicate that
Ca. E. dacicola and a novel facultative bacterium Tatumella TA1 may perform
key nutritional functions for the host, including the synthesis of essential
amino acids and ammonia assimilation from host nitrogenous waste products.
Tatumella TA1 is consistently associated with all life stages of populations
collected in Israel and Crete at low relative abundance, and encodes large
adhesion proteins that may assist in attachment to the host epithelium or
other members of the microbiota in the B. oleae gut. I have also examined the
variation in frequency and relative abundance of facultative microbes that
infect several Glossina spp. (the tsetse fly): the sole vector of African
trypanosomes in Sub-Saharan Africa. In addition to three vertically transmitted
endosymbionts (Wigglesworthia, Sodalis, and Wolbachia), tsetse flies are
infected with two additional potential reproductive manipulators: Spiroplasma
and Rickettsia, and a novel strain of Klebsiella. The draft genomes generated
for these taxa over the course of this thesis provide the opportunity for future
studies in to their role in host biology and how community interactions can
shape the transmission and evolutionary dynamics of host-associated
microbes
Variation in the Structure and Function of Invertebrate-Associated Bacterial Communities
Full text linkMicroorganisms are intricately involved in the ecology of many insects, often
contributing to host fitness and forming evolutionarily stable associations. The
interactions between hosts and microbes can significantly alter their
evolutionary trajectories, enabling them to adapt to novel environmental
conditions. In this thesis I have examined how host ecology can shape the
interactions of bacteria with insects of agricultural and epidemiological
importance. I have described the bacterial communities associated with
Bactrocera oleae (the olive fruit fly) and generated draft genome sequences
for several members of the gut microbiota, including the symbiotic bacterium
“Candidatus Erwinia dacicola”. Comparative genomic analyses indicate that
Ca. E. dacicola and a novel facultative bacterium Tatumella TA1 may perform
key nutritional functions for the host, including the synthesis of essential
amino acids and ammonia assimilation from host nitrogenous waste products.
Tatumella TA1 is consistently associated with all life stages of populations
collected in Israel and Crete at low relative abundance, and encodes large
adhesion proteins that may assist in attachment to the host epithelium or
other members of the microbiota in the B. oleae gut. I have also examined the
variation in frequency and relative abundance of facultative microbes that
infect several Glossina spp. (the tsetse fly): the sole vector of African
trypanosomes in Sub-Saharan Africa. In addition to three vertically transmitted
endosymbionts (Wigglesworthia, Sodalis, and Wolbachia), tsetse flies are
infected with two additional potential reproductive manipulators: Spiroplasma
and Rickettsia, and a novel strain of Klebsiella. The draft genomes generated
for these taxa over the course of this thesis provide the opportunity for future
studies in to their role in host biology and how community interactions can
shape the transmission and evolutionary dynamics of host-associated
microbes
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