1,726,894 research outputs found
Gradual acquisition of immunity to severe malaria with increasing exposure.
Get PDFPrevious analyses have suggested that immunity to non-cerebral severe malaria due to Plasmodium falciparum is acquired after only a few infections, whereas longitudinal studies show that some children experience multiple episodes of severe disease, suggesting that immunity may not be acquired so quickly. We fitted a mathematical model for the acquisition and loss of immunity to severe disease to the age distribution of severe malaria cases stratified by symptoms from a range of transmission settings in Tanzania, combined with data from several African countries on the age distribution and overall incidence of severe malaria. We found that immunity to severe disease was acquired more gradually with exposure than previously thought. The model also suggests that physiological changes, rather than exposure, may alter the symptoms of disease with increasing age, suggesting that a later age at infection would be associated with a higher proportion of cases presenting with cerebral malaria regardless of exposure. This has consequences for the expected pattern of severe disease as transmission changes. Careful monitoring of the decline in immunity associated with reduced transmission will therefore be needed to ensure rebound epidemics of severe and fatal malaria are avoided
Linked collectors and determiners for: Revision of the genus Homa Distant (Hemiptera: Cicadellidae: Typhlocybinae).
No full textNatural history specimen data linked to collectors and determiners held within, "Revision of the genus Homa Distant (Hemiptera: Cicadellidae: Typhlocybinae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/6569b31b-b0c5-4758-82c5-a9b376cd3aa6">https://bionomia.net/dataset/6569b31b-b0c5-4758-82c5-a9b376cd3aa6</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/6569b31b-b0c5-4758-82c5-a9b376cd3aa6">https://gbif.org/dataset/6569b31b-b0c5-4758-82c5-a9b376cd3aa6</a>. Formatted as a Frictionless Data package
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
Linked collectors and determiners for: A new Calliprora species mining lead trees in Florida (Lepidoptera: Gelechiidae).
No full textNatural history specimen data linked to collectors and determiners held within, "A new Calliprora species mining lead trees in Florida (Lepidoptera: Gelechiidae)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/a0a76453-f5d6-4758-8545-7ce2a6e0b092">https://bionomia.net/dataset/a0a76453-f5d6-4758-8545-7ce2a6e0b092</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/a0a76453-f5d6-4758-8545-7ce2a6e0b092">https://gbif.org/dataset/a0a76453-f5d6-4758-8545-7ce2a6e0b092</a>. Formatted as a Frictionless Data package
THE LUMINOUS SUPERSOFT X-RAY SOURCE RXJ0925.7-4758 AS A BINARY ACCRETING WHITE DWARF
Get PDFThe luminous super soft X-ray sources (LSSS) are believed to be white dwarf binaries with large mass accretion rates (~1×10-7 - 6×10-7MΘ yr-1) and the energy source is the steady nuclear burning on the white dwarf (WD) surface. During such high accretion rates, hydrogen shell burning consumes hydrogen at the same rate as the WD accretes. In the present work, the LSSS RXJ0925.7-4758 has been studied to examine whether steady state nuclear burning can contribute to emit super soft X-radiation. The luminosity and effective temperature of the LSSS RXJ0925.7-4758 are calculated using the model proposed by Nomoto et.al., 2007 and the values of luminosity (8.56x1037erg/sec) and effective temperature (94.19 ev) are found to tally well with the observed ones. Using formulas of Hoshi, 1998, the color temperature of the LSSS RXJ0925.7-4758 is calculated which is found to be 106 ev and it is higher than the effective temperature of the source
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
Linked collectors and determiners for: Muséum d'histoire naturelle de Nîmes.
No full textNatural history specimen data linked to collectors and determiners held within, "Muséum d'histoire naturelle de Nîmes". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/aec988c9-b308-4758-9eb0-1ecf93749998">https://bionomia.net/dataset/aec988c9-b308-4758-9eb0-1ecf93749998</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/aec988c9-b308-4758-9eb0-1ecf93749998">https://gbif.org/dataset/aec988c9-b308-4758-9eb0-1ecf93749998</a>. Formatted as a Frictionless Data package
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
Festinare (Suet. gramm. 23, 6 ; CIL IV 4758 ; Hor. epist. 1, 1, 85)
No full textFestinare : (Suet. gramm. 23, 6 ; CIL IV 4758 ; Hor. epist. 1, 1, 85). - In: Zeitschrift für Papyrologie und Epigraphik. 45. 1982. S. 53-5
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