1,724,959 research outputs found
Chicago, Burlington & Quincy (CBQ) 4987
No full textA photograph print showing Chicago, Burlington & Quincy (CBQ) 4987, 2-8-2 (BLW, Class O-1-A), LaCrosse, WI
Chicago, Burlington & Quincy (CBQ) 4987
No full textA photograph print showing Chicago, Burlington & Quincy (CBQ) 4987, 2-8-2, (BLW, Class O-1-A), Galesburg, IL
Chicago, Burlington & Quincy (CBQ) 4987 (neg)
No full textA photograph negative showing Chicago, Burlington & Quincy (CBQ) 4987, 2-8-2, North Kansas City, MO
Linked collectors and determiners for: New species of the Neotropical genus Campatonema Jones (Geometridae, Ennominae) with the first description of the female.
No full textNatural history specimen data linked to collectors and determiners held within, "New species of the Neotropical genus Campatonema Jones (Geometridae, Ennominae) with the first description of the female". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/dea4639d-b50c-4987-b209-e99ffac69ae3">https://bionomia.net/dataset/dea4639d-b50c-4987-b209-e99ffac69ae3</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/dea4639d-b50c-4987-b209-e99ffac69ae3">https://gbif.org/dataset/dea4639d-b50c-4987-b209-e99ffac69ae3</a>. Formatted as a Frictionless Data package
Expression of B cell markers on SR-4987 cells derived from murine bone marrow stroma
No full textThe murine cell line SR-4987 was originated in our laboratory from adherent cells of a long term bone marrow culture. SR-4987 cells do not express p21-ras and c-fms products on membrane whereas secrete M-CSF, evidence a fibroblast-like morphology and are vimentine positive. This line shows a very poor "in vitro" agar clonogenicity which is not modulated by the addition of different cytokines and growth factors (M-CSF, GM-CSF, G-CSF, IL-3, IL-7, alpha-TNF, PDGF, and EGF). On the contrary, a dramatic increase in clonogenicity is observed in the presence of bFGF. The RT-PCR investigation evidences the mRNA encoding for bFGF, IL-7, GM-CSF, and SCF (c-kit ligand). The analysis of CD antigen expression on SR-4987 cell membrane indicates a phenotype (CD5+, CD44+, 45R(B220)+, sIg+, 5'-nucleotidase+) that is consistent with a B cell feature. Our observations suggest that exogenous bFGF might represent an appropriate stimulus for inducing the SR-4987 cells proliferation also in the absence of cell-substrate anchorage. Further, they indicate that SR-4987 cells could represent a particular differentiation stage in which characters of "stromal cell" and "B cell" are coexpressed in agreement with the hypothesis of a common stromal-hematopoietic differentiation
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
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