1,720,990 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe 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
Full text link“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
Full text linkWe 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
Full text linkWe 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
Downregulation of GLI1- dependent survival pathway underlies arachidonic acid antitumoral activity
Full text link2pFil: Comba, Andrea. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: Pasqualini, María Eugenia. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: Vara Mesler, Mariana. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: Silva, Renata Alejandra. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: García Fernández Barrera, A. Mayo Clinic, Rochester, MN; USAFil: Fernández Zapico, Martin. Mayo Clinic, Rochester, MN; USAFil: Eynard, Aldo. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaNumerous studies have demonstrated a role for essential fatty acids (ePUFAs) during tumor evelopment. However, the molecularmechanism underlying this phenomenon remains elusive. Here, we defined a novel molecular mechanism explaining the ePUFA arachidonic acid (AA) anti-tumoral activity. We used in vivo and invitro assays to determine the effect of AA in primary tumor volume, lung micro-metastasis and apoptosis (TUNEL and Caspase 3/7activation) as well as gene expression (qRT-PCR and WB) andtranscriptional activity (Luciferase and ChIP assays). We observed a significant reduction in tumor volume and micro-metastasis incidence in AA-injected animals compared to the control group.Moreover, we demonstrated an increased apoptosis level in AA treated group in vivo and in vitro. Analysis of the mechanism showed that the AA treatment decreases the expression of the anti-apoptotic molecules Bcl-2 and Bfl-1/A1 by down-regulating their promoter activity. Moreover we found that the AA silencing of the oncogenic transcription factor GLI1 is the underling mechanism controlling Bcl-2 and Bfl-1/A1 expression. Finally, we demonstrated that AAinduced apoptosis can be rescued by overexpressing GLI1 in cancer cells. These results define a novel mechanism used by ePUFAs to inhibit tumor growth and suggest the use of AA for the development of new therapeutic approaches.Fil: Comba, Andrea. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: Pasqualini, María Eugenia. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: Vara Mesler, Mariana. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: Silva, Renata Alejandra. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaFil: García Fernández Barrera, A. Mayo Clinic, Rochester, MN; USAFil: Fernández Zapico, Martin. Mayo Clinic, Rochester, MN; USAFil: Eynard, Aldo. Universidad Nacional de Córdoba. Instituto de Investigaciones en Ciencias de la Salud (INICSA); ArgentinaOtras Ciencias Médica
Scale-free correlations and potential criticality in weakly ordered populations of brain cancer cells
No full textCollective behavior spans several orders of magnitude of biological organization, from cell colonies to flocks of birds. We used time-resolved tracking of individual glioblastoma cells to investigate collective motion in an ex vivo model of glioblastoma. At the population level, glioblastoma cells display weakly polarized motion in the (directional) velocities of single cells. Unexpectedly, fluctuations in velocities are correlated over distances many times the size of a cell. Correlation lengths scale linearly with the maximum end-to-end length of the population, indicating that they are scale-free and lack a characteristic decay scale other than the size of the system. Last, a data-driven maximum entropy model captures statistical features of the experimental data with only two free parameters: the effective length scale (nc) and strength (J) of local pairwise interactions between tumor cells. These results show that glioblastoma assemblies exhibit scale-free correlations in the absence of polarization, suggesting that they may be poised near a critical point.Fil: Wood, Kevin B.. University of Michigan. Department of Physics; Estados UnidosFil: Comba, Andrea. Michigan State University; Estados Unidos. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Motsch, Sebastien. Arizona State University; Estados UnidosFil: Grigera, Tomas Sebastian. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; ArgentinaFil: Lowenstein, Pedro Ricardo. Michigan State University; Estados Unido
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
