1,720,956 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
Disseminated varicella presenting as acute abdominal pain nine days before the appearance of the rash
No full textWe report a patient presenting with severe epigastric pain and diffuse abdominal tenderness, with negative imaging and endoscopic evaluation. During hospitalization, the patient developed confusion, seizures, pneumonia, anemia and thrombocytopenia. A hemorrhagic rash appeared on day nine of admission, with serology and skin biopsy confirming a diagnosis of hemorrhagic varicella. © 2008.
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
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
Effects of ventral hippocampal lesion on thermal and mechanical nociception in neonates and adult rats
No full textThe proper maturation of the hippocampus is essential for the development of different behaviours, including memory, pain responses and avoidance. The mechanisms involved in the neurodevelopment of nociception have also been implicated in several neuropsychiatric disorders. The neonatal lesion of the ventral hippocampus (VH) in rats, an animal model of schizophrenia, can be utilized to study the developmental neurobiology of animal behaviour. We examined the nociceptive responses in this animal model at different stages of development. Rat pups were lesioned at postnatal day 7 by injecting ibotenic acid into the VH bilaterally, and then tested for thermal and mechanical nociception at the age of 35, 65 and 180 days. The nociceptive tests used were the hot plate (HP), paw pressure (PP) and tail flick (TF) tests. Another group of adult rats had the same lesion in the VH and then underwent the same tests at 28, 56 and 168 days post-lesions. When compared with sham controls, the rats with neonatal VH lesion showed decreased latency for the HP and PP tests only after puberty. The TF test showed significant increase in latency for both groups at age 65 and 180 days. The adult rats with VH lesion showed no major changes over all periods of testing. 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Moyamoya syndrome with intraventricular hemorrhage in an adult with factor V Leiden mutation
No full textObjective: To report a case of proximal occlusion of 2 major cerebral vessels associated with moyamoya network circulation that manifested by spontaneous intraventricular hemorrhage. Design: Case report. Patient and Results: A 36-year-old Syrian man presented with symptoms of sudden-onset headache, neck stiffness, and confusion. The computed tomography scan of his brain showed intraventricular bleeding, and the subsequent 4 vessel angiographies revealed occlusion of the left middle and anterior cerebral arteries with moyamoya appearance in the terminal branches. The coagulation profile showed the presence of heterozygous factor V Leiden mutation. The patient was treated conservatively until resolution of his blood clot, and later he was started on oral anticoagulation. Conclusion: Factor V Leiden mutation may cause large cerebral vessel occlusion with moyamoya syndrome in adults. ©2005 American Medical Association. All rights reserved.Aronis S, 2002, ACTA PAEDIATR, V91, P87, DOI 10.1080-080352502320764247; BERTINA RM, 1994, NATURE, V369, P64, DOI 10.1038-369064a0; Dobson SR, 2002, BLOOD, V99, P3144, DOI 10.1182-blood.V99.9.3144; Inoue R, 1994, No To Shinkei, V46, P995; Irani-Hakime N, 2000, AM J HEMATOL, V65, P45, DOI 10.1002-1096-8652(200009)65:145::AID-AJH83.0.CO;2-V; Irani-Hakime N, 2000, CLIN CHEM, V46, P134; KAGEJI T, 1992, Neurological Surgery, V20, P177; Kenet G, 2000, STROKE, V31, P1283; Lynch JK, 2001, J CHILD NEUROL, V16, P735, DOI 10.1177-088307380101601006; Marinella MA, 1999, MAYO CLIN PROC, V74, P795; MASSON C, 1986, REV NEUROL, V142, P716; Orlandi G, 1998, ANGIOLOGY, V49, P79, DOI 10.1177-000331979804900111; SATO M, 1985, NEUROSURGERY, V17, P260; Seki Y, 2001, SURG NEUROL, V55, P58, DOI 10.1016-S0090-3019(00)00339-6; Steiner M, 2000, J PEDIAT HEMATOL ONC, V22, P262, DOI 10.1097-00043426-200005000-00014; SUZUKI J, 1983, STROKE, V14, P104; Szolnoki Z, 2001, J NEUROL, V248, P756, DOI 10.1007-s004150170090; Taher A, 2001, THROMB HAEMOSTASIS, V86, P723; Varelas PN, 1998, PEDIATR NEUROL, V18, P262, DOI 10.1016-S0887-8994(97)00166-542
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