1,722,601 research outputs found
Data related to Li et al. (2020). Current Biology.
No full textThis is data and codes related to Li et al. (2020). Functional Architecture of Motion Direction in the Mouse Superior Colliculus. Current Biology.Related Publication:
Functional Architecture of Motion Direction in the Mouse Superior Colliculus
Li, Ya-tang Division of Biology and Biological Engineering, California Institute of Technology
Turan, Zeynep Division of Biology and Biological Engineering, California Institute of Technology
Meister, Markus Division of Biology and Biological Engineering, California Institute of Technology
Current Biology
engContact person: Meister, Markus [email protected]
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
Design and analysis of novel low-voltage low loss RF-MEMS switch / Ma Li Ya
Full text linkRF-MEMS switch is a kind of electromechanical structure that is used to short or open a RF to millimeter-wave-frequency transmission line. Compared to traditional RF switches, RF-MEMS switches possess many significant advantages, such as negligible DC power consumption, small series capacitance, resistance and insertion loss, good isolation, as well as high linearity and cut-off frequency. RF-MEMS switch can be actuated by many different mechanisms, like electrostatic, electromagnetic, thermal, and piezoelectric; among them electrostatic mechanism is the most prevalent technique in use today. However, the main challenge of the electrostatic-actuated RF-MEMS switches is their comparatively high actuation voltage (20V~80V), which makes them unsatisfied for wireless communication systems; cannot be integrated with active CMOS circuitry; and lead them to have short lifetimes. The objective of this project is to design, optimize, simulate and analyze a low-voltage low-loss electrostatic-actuated RF-MEMS capacitive switch. The research methodology follows the steps of identifying the design specification, creating the novel 3D structure, optimizing the geometric dimensions, simulating and verifying the switch’s properties, modeling the equivalent electric circuitry, and implementing it into the RF applications, namely MEMS phase shifters. The low-actuation voltage design is achieved by using novel combination of folded and spring beams which are used for supporting the switch’s big membrane; and the low-loss property is realized by employing an inductive matching circuit, namely T-match or π-match circuit. The structure of the switch is optimized by using a new developed multi-response optimization method which is based on Taguchi method and weighted principal component analysis to accomplish the aims of low-actuation voltage, robust structure, and relatively short switching time simultaneously. The final optimized RF-MEMS capacitive switch has actuation voltage of 3.06V with spring constant of 0.2378N/m, switching time of 34μs~19.5μs with bias voltage of 4V~7V, the insertion loss and isolation of -0.5487dB and -23.02dB, respectively, at frequency of 20GHz. By using T-match circuit, the insertion loss and isolation can be enhanced by 76.47% and 25.07%, respectively; and by using π-match circuit, the insertion loss can be improved by 76.53%. Two low-voltage low-loss MEMS phase shifters, namely MEMS switched-line phase shifter and DMTL phase shifter, by using proposed RF-MEMS switches are presented. For the 3-bit MEMS switched-line phase shifter, its average phase error and insertion loss is 0.5056° and -1.51dB, respectively, at 20GHz; both return loss and isolation are better than -11dB at a wideband frequency range of 18GHz to 22GHz; the design area is 6mm × 4 mm. For the 3-bit DMTL phase shifter, its average phase error and insertion loss is 6.032° and -1.526dB, respectively, at 20GHz; the return loss is better than -10.05dB for all the phase shift conditions; the design area is 12.8mm × 1.4mm
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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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