1,722,192 research outputs found
First person – Sijie Tan and Wen Han Tong
No full textFirst Person is a series of interviews with the first authors of a selection of papers published in Disease Models & Mechanisms, helping researchers promote themselves alongside their papers. Sijie Tan and Wen Han Tong are co-first authors on ‘
Impaired episodic-like memory in a mouse model of Alzheimer's disease is associated with hyperactivity in prefrontal–hippocampal regions’, published in DMM. Sijie conducted the research described in this article while a postdoc in Ajai Vyas's lab at Nanyang Technological University, Singapore. She is now a postdoc in the lab of Nora Kory at Harvard University, Boston, MA, USA, investigating the pathobiology of age-related brain disorders. Wen Han Tong is a postdoc in the lab of Ajai Vyas at Nanyang Technological University, Singapore, investigating neurobiology and translational neuroscience to find interventions for brain diseases
The Experts Panel:Summary of the National Guidelines for the Diagnosis and Management Lipid of Disorders in Taiwan
No full textSpontaneous modulation instability in noninstantaneous self-defocusing medium with a coherent feedback
No full text
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
Conformal Freeze-In, Composite Dark Photon, and Asymmetric Reheating
Get PDFLarge classes of dark sector models feature mass scales and couplings very
different from the ones we observe in the Standard Model (SM). Moreover, in the
freeze-in mechanism, often employed by the dark sector models, it is also
required that the dark sector cannot be populated during the reheating process
like the SM. This is the so called asymmetric reheating. Such disparities in
sizes and scales often call for dynamical explanations. In this paper, we
explore a scenario in which slow evolving conformal field theories (CFTs) offer
such an explanation. Building on the recent work on conformal freeze-in (COFI),
we focus on a coupling between the Standard Model Hypercharge gauge boson and
an anti-symmetric tensor operator in the dark CFT. We present a scenario which
dynamically realizes the asymmetric reheating and COFI production. With a
detailed study of dark matter production, and taking into account limits on the
dark matter (DM) self-interaction, warm DM bound, and constraints from the
stellar evolution, we demonstrate that the correct relic abundance can be
obtained with reasonable choices of parameters. The model predicts the
existence of a dark photon as an emergent composite particle, with a small
kinetic mixing also determined by the CFT dynamics, which correlates it with
the generation of the mass scale of the dark sector. At the same time, COFI
production of dark matter is very different from those freeze-in mediated by
the dark photon. This is an example of the physics in which a realistic dark
sector model can often be much richer and with unexpected features.Comment: 41 pages, 8 figure
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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