1,721,028 research outputs found
Complete Genome Sequence of Tick-Borne Encephalitis Virus Strain A104 Isolated from a Yellow-Necked Mouse (Apodemus flavicollis) in Austria.
No full textTick-borne encephalitis virus (TBEV) strain A104 was isolated from the brain of a yellow-necked mouse in Austria in 1990. The complete genome sequence was 11,097 nucleotides long. Comparison with TBEV prototype strain Neudoerfl showed 32 amino acid exchanges and the absence of an internal poly(A) stretch within the 3' noncoding region
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
Dispelling 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
molecular evolution and pathogenic relevance
Full text linkHantaviren (Familie Bunyaviridae) sind Erreger, die von Nagetieren auf den Menschen übertragen werden und Hämorrhagische Fieber mit Renalem Syndrom (HFRS) auslösen. Die vorgelegte Arbeit beinhaltet derartige Ergebnisse zu zwei europäischen Hantaviren, dem Dobravavirus (DOBV) und dem Tulavirus (TULV). DOBV ist ein wichtiger HFRS-Erreger in Europa. DOBV Stämme kommen in mindestens zwei Nagerspecies, der Gelbhalsmaus (Apodemus flavicollis) und der Brandmaus (A. agrarius) vor. In Übereinstimmung mit diesen natürlichen Wirten bilden die Virusstämme zwei genetische Linien: DOBV-Af und DOBV-Aa. Die phylogenetischen Analysen von den Nukleotidsequenzen der S-, M- und L-Segmente von sympatrisch vorkommenden DOBV-Af und DOBV-Aa Stämmen aus Mitteleuropa zeigten das Vorkommen von Reassortmentprozessen der Genomsegmente während der Evolution der Virusspecies. Ausserdem, wurde die virale Nukleotidsequenz aus einem DOBV-seropositiven HFRS-Patienten aus Detschland amplifiziert. Damit wurde erstmalig der molekulare Beweis erbracht, dass DOBV in Mitteleuropa HFRS auslöst und dass die DOBV-Aa Linie humanpathogen ist. Aus einer in der Slowakei gefangenen A. agrarius Maus haben wir ein neues Virusisolat gewonnen, welches "Slovakia (SK/Aa)" genannt wurde. SK/Aa ist das bisher einzige Virusisolat, das die DOBV-Aa Linie repräsentiert. Es wurde gemeinsam mit einem Isolat der DOBV-Af Linie zur vergleichenden Typisierung der Antikörper von mitteleuropäischen HFRS-Patienten mittels Fokusreduktionsneutralisationstest eingesetzt. Die Seren der meisten Patienten zeigten die höchsten neutralisierenden Antikörpertiter gegenüber SK/Aa, was die Schlussfolgerung zulässt, dass DOBV-Aa Stämme für die meisten DOBV-Infektionen in Mitteleuropa verantwortlich sind. TULV wird durch die Feldmaus (Microtus arvalis) beherbergt. Die Fähigkeit zur Auslösung von HFRS war bisher wenig bekannt. Wir haben den ersten Fall von HFRS gefunden, der mit einer TULV Infektion assoziiert ist. Aus demselben geographischen Gebiet in Nordostdeutschland konnten aus Feldmäusen TULV Nukleotidsequenzen amplifiziert werden. In phylogenetischen Analysen clustern sie mit Stämmen aus Polen und bilden mit diesen gemeinsam eine eigene, neue genetische Linie. Ausser dem hier untersuchten DOBV und dem länger bekannten Puumalavirus ist TULV offenbar das dritte Hantavirus, das in Mitteleuropa HFRS hervorruft.Hantaviruses (Bunyaviridae family) are rodent-borne bunyaviruses that cause hemorrhagic fever with renal syndrome (HFRS) in Eurasia. This thesis presents novel data about two European hantaviruses, Dobrava virus (DOBV) and Tula virus (TULV). DOBV is an important etiologic agent of HFRS in Europe. DOBV strains were found to be hosted by at least two different rodent species, yellow-necked mouse (Apodemus flavicollis) and striped field mouse (A. agrarius). According to their natural hosts they form the distinct genetic lineages DOBV-Af and DOBV-Aa, respectively. We have determined and analysed the complete S and M, and partial L segment nucleotide sequences of sympatrically occurring DOBV-Af and DOBV-Aa strains from Central Europe. Molecular phylogenetic analyses gave evidence for genetic reassortment in the evolution of the virus species. Moreover, we amplified a DOBV-Aa nucleotide sequence from a DOBV-seropositive HFRS patient from Germany. This is the first molecular identification of human infection by DOBV in Central Europe and the first direct proof that a virus strain related to the DOBV-Aa lineage, carried by A. agrarius rodents, is able to cause HFRS. Under biosafety level 3 conditions, we have established a DOBV isolate named Slovakia (SK/Aa) from an A. agrarius animal captured in Slovakia. SK/Aa, as the only isolate clearly belonging to the DOBV-Aa lineage, can be taken as the representative of this virus lineage. The new virus isolate, in comparison to a DOBV-Af strain, was used for serotyping neutralising antibodies of HFRS patients in Central Europe by the use of a focus reduction neutralisation assay. Most patients'' sera exhibited a higher end-point titer towards SK/Aa suggesting that DOBV-Aa strains are responsible for most of the DOBV HFRS cases in this region. TULV is carried by European common voles (Microtus sp.). Its pathogenic potential for humans was rather unknown. We have described the first case of HFRS which can be associated with TULV infection. Moreover, TULV strains detected in M. arvalis near the home village of the patient in North-East Germany clustered with strains from Poland and represent a new, well-supported genetic lineage within the TULV species. In addition to DOBV and longer known Puumala virus, TULV is most likely an additional causative agent of HFRS in Central Europe
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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