1,725,463 research outputs found
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
John A. Murphy
No full textFaculty photograph of John A. Murphy, Miami Medical College, 1897. This photograph is a part of the Miami Medical College Graduate and Faculty Photograph collection
John A. Murphy
No full textFaculty photograph of John A. Murphy, Miami Medical College, 1902. This photograph is a part of the Miami Medical College Graduate and Faculty Photograph collection
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
Plant-Based Vaccines: Novel and Low-Cost Possible Route for Mediterranean Innovative Vaccination Strategies
No full textA plant bioreactor has enormous capability as a system that supports many biological
activities, that is, production of plant bodies, virus-like particles (VLPs), and vaccines.
Foreign gene expression is an efficient mechanism for getting protein vaccines against
different human viral and nonviral diseases. Plants make it easy to deal with safe,
inexpensive, and provide trouble-free storage. The broad spectrum of safe gene promoters
is being used to avoid risk assessments. Engineered virus-based vectors have
no side effect. The process can be manipulated as follows: (a) retrieve and select gene
encoding, use an antigenic protein from GenBank and/or from a viral-genome sequence,
(b) design and construct hybrid-virus vectors (viral vector with a gene of
interest) eventually flanked by plant-specific genetic regulatory elements for constitutive
expression for obtaining chimeric virus, (c) gene transformation and/or transfection,
for transient expression, into a plant–host model, that is, tobacco, to get protocols
processed positively, and then moving into edible host plants, (d) confirmation of protein
expression by bioassay, PCR-associated tests (RT-PCR), Northern and Western blotting
analysis, and serological assay (ELISA), (e) expression for adjuvant recombinant
protein seeking better antigenicity, (f ) extraction and purification of expressed protein
for identification and dosing, (g) antigenicity capability evaluated using parental or oral
delivery in animal models (mice and/or rabbit immunization), and (h) growing of
construct-treated edible crops in protective green houses.
Some successful cases of heterologous gene-expressed protein, as edible vaccine, are
being discussed, that is, hepatitis C virus (HCV). R9 mimotope, also named hypervariable
region 1 (HVR1), was derived from the HVR1 of HCV. It was used as a potential neutralizing
epitope of HCV. The mimotope was expressed using cucumber mosaic virus coat protein
(CP), alfalfa mosaic virus CP P3/RNA3, and tobacco mosaic virus (TMV) CP–tobacco mild
green mosaic virus (TMGMV) CP as expression vectors into tobacco plants. Expressed
recombinant protein has not only been confirmed as a therapeutic but also as a diagnostic
tool. Herpes simplex virus 2 (HSV-2), HSV-2 gD, and HSV-2 VP16 subunits were transfected
into tobacco plants, using TMV CP–TMGMV CP expression vectors
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