1,723,401 research outputs found
Petrology of the Yamato-8449 CR chondrite
Get PDFP(論文)The Yamato (Y)-8449 chondrite is a new CR (Renazzo-type) chondrite, and the constituent minerals coincide in chemical composition with those of the other CR chondrites except phyllosilicate and metal. FeO and Al_2O_3 contents of phyllosilicates in Y-8449 are richer than those in other CR chondrites. Fe-Ni metal in Y-8449 is classified into two types; one type has an exsolution texture indicating a slow cooling rate of the metal, and the other type has a massive texture free from exsolution texture. Massive Fe-Ni metal in Y-8449 is more homogeneous than that in the other CR chondrites. Groundmass glass and phenocrystic enstatite in Y-8449 chondrules have been replaced by phyllosilicate in the chondrule rims, and the aqueous alteration reaction that produced the phyllosilicate had possibly taken place in a nebula at low temperatures prior to accretion onto the parent body.departmental bulletin pape
Linked collectors and determiners for: Dirt-encrusted and dragon millipedes (Diplopoda: Polydesmida: Paradoxosomatidae) from Queensland, Australia.
No full textNatural history specimen data linked to collectors and determiners held within, "Dirt-encrusted and dragon millipedes (Diplopoda: Polydesmida: Paradoxosomatidae) from Queensland, Australia". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c">https://bionomia.net/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c">https://gbif.org/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c</a>. Formatted as a Frictionless Data package
Linked collectors and determiners for: Dirt-encrusted and dragon millipedes (Diplopoda: Polydesmida: Paradoxosomatidae) from Queensland, Australia.
No full textNatural history specimen data linked to collectors and determiners held within, "Dirt-encrusted and dragon millipedes (Diplopoda: Polydesmida: Paradoxosomatidae) from Queensland, Australia". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c">https://bionomia.net/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c">https://gbif.org/dataset/8c531d6d-9d32-49fd-8449-12126dac1d5c</a>. Formatted as a Frictionless Data package
Lessons in our faults: Fault lines on race and research ethics
Get PDFCITATION: Msimang, P. 2020. Lessons in our faults : fault lines on race and research ethics. South African Journal of Science, 116(9/10):8449, doi:10.17159/sajs.2020/8449.The original publication is available at https://sajs.co.zaENGLISH ABSTRACT: Since the publication of the now infamous paper ‘Age- and education-related effects on cognitive functioning in
Colored South African women’ by Nieuwoudt and colleagues where they claim the cognitive functioning of coloured
women is defective in some ways,1 there has been renewed doubts about the legitimacy of race in research at
Stellenbosch University and the controversy has become a matter of concern for universities and research ethics
boards across the country. Because of the harms the Nieuwoudt paper has caused, the question of the use of race
in research has re-emerged as a central concern. What researchers want to know is how to assess whether race
is relevant to some question(s), how to use racial classifications if race is relevant, and when to leave race out.https://sajs.co.za/article/view/8449Publisher's versio
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
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
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