1,721,088 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
Candidate Distant Trans-Neptunian Objects Detected by the New Horizons Subaru TNO Survey
No full textFraser, Wesley C. et al.-- Full list of authors: Fraser, Wesley C.; Porter, Simon B.; Peltier, Lowell; Kavelaars, JJ; Verbiscer, Anne J.; Buie, Marc W.; Stern, S. Alan; Spencer, John R.; Benecchi, Susan D.; Terai, Tsuyoshi; Ito, Takashi; Yoshida, Fumi; Gerdes, David W.; Napier, Kevin J.; Lin, Hsing Wen; Gwyn, Stephen D. J.; Smotherman, Hayden; Fabbro, Sebastien; Singer, Kelsi N.; Alexander, Amanda M.; Arimatsu, Ko; Banks, Maria E.; Bray, Veronica J.; Ramy El-Maarry, Mohamed; Ferrell, Chelsea L.; Fuse, Tetsuharu; Glass, Florian; Holt, Timothy R.; Hong, Peng; Ishimaru, Ryo; Johnson, Perianne E.; Lauer, Tod R.; Leiva, Rodrigo; S. Lykawka, Patryk; Marschall, Raphael; Núñez, Jorge I.; Postman, Marc; Quirico, Eric; Rhoden, Alyssa R.; Simpson, Anna M.; Schenk, Paul; Skrutskie, Michael F.; Steffl, Andrew J.; Throop, HenryWe report the detection of 239 trans-Neptunian objects discovered through the ongoing New Horizons survey for distant minor bodies being performed with the Hyper Suprime-Cam mosaic imager on the Subaru Telescope. These objects were discovered in images acquired with either the r2 or the recently commissioned EB-gri filter using shift and stack routines. Due to the extremely high stellar density of the search region downstream of the spacecraft, new machine learning techniques had to be developed to manage the extremely high false-positive rate of bogus candidates produced from the shift and stack routines. We report discoveries as faint as r2 ∼ 26.5. We highlight an overabundance of objects found at heliocentric distances R ≳ 70 au compared to expectations from modeling of the known outer solar system. If confirmed, these objects betray the presence of a heretofore-unrecognized abundance of distant objects that can help explain a number of other observations that otherwise remain at odds with the known Kuiper Belt, including detections of serendipitous stellar occultations, and recent results from the Student Dust Counter on board the New Horizons spacecraft. © 2024. The Author(s).The authors wish to recognize and acknowledge the very
significant cultural role and reverence that the summit of
Maunakea has always had within the indigenous Hawaiian
community. We are most fortunate to have the opportunity to
conduct observations from this mountain.
This research is based on data collected at the 8.2 m Subaru
Telescope (https://subarutelescope.org/en/) using its prime
focus camera (the Hyper Suprime-Cam), operated by the National
Astronomical Observatory of Japan. The Subaru Telescope
provided the main source of data for this work. We would like
to thank the director, Subaru staff, and the TAC for working with
us to accommodate our complex scheduling requirements.
This research is based on observations from programs GS2019B-FT-102, GN-2020A-DD-103, and GS-2020A-DD-103
obtained at the international Gemini Observatory, a program of
NSFʼs NOIRLab, which is managed by the Association of
Universities for Research in Astronomy (AURA) under a
cooperative agreement with the National Science Foundation
on behalf of the Gemini Observatory partnership: the National
Science Foundation (United States), National Research Council
(Canada), Agencia Nacional de Investigación y Desarrollo
(Chile), Ministerio de Ciencia, Tecnología e Innovación
(Argentina), Ministério da Ciência, Tecnologia, Inovações e
Comunicações (Brazil), and Korea Astronomy and Space
Science Institute (Republic of Korea).
This work was supported by a NASA Keck PI Data Award,
administered by the NASA Exoplanet Science Institute. Data
presented herein were obtained at the Subaru Telescope from
telescope time allocated to the National Aeronautics and Space
Administration through the agency's scientific partnership with
the California Institute of Technology and the University of
California. This research used the Canadian Astronomy Data Centre
facilities operated by the National Research Council of Canada
with the support of the Canadian Space Agency. This work also
made use of the Gemini Observatory Archive, NASAʼs
Astrophysics Data System Bibliographic Services, and the JPL
Horizons web interface (https://ssd.jpl.nasa.gov/horizons.cgi).
New Horizons scientists Stern, Benecchi, Buie, Fraser,
Lauer, Kavelaars, Peltier, Porter, and Verbiscer thank NASA’s
New Horizons Mission (NASW-02008) for funding.
This work made use of the Pan-STARRS1 Surveys (PS1)
and the PS1 public science archive, which have been made
possible through contributions by the Institute for Astronomy,
the University of Hawaii, the Pan-STARRS Project Office, the
Max-Planck Society and its participating institutes, the Max
Planck Institute for Astronomy, Heidelberg and the Max
Planck Institute for Extraterrestrial Physics, Garching, Johns
Hopkins University, Durham University, the University of
Edinburgh, the Queen’s University Belfast, the HarvardSmithsonian Center for Astrophysics, the Las Cumbres
Observatory Global Telescope Network Incorporated, the
National Central University of Taiwan, the Space Telescope
Science Institute, the National Aeronautics and Space Administration under grant No. NNX08AR22G issued through the
Planetary Science Division of the NASA Science Mission
Directorate, the National Science Foundation grant No. AST1238877, the University of Maryland, Eotvos Lorand University (ELTE), the Los Alamos National Laboratory, and the
Gordon and Betty Moore Foundation.
This paper makes use of LSST Science Pipelines software
developed by the Vera C. Rubin Observatory. We thank the
Rubin Observatory for making their code available as free
software at https://pipelines.lsst.io.
We also thank the former and current directors of the Subaru
Telescope, Michitoshi Yoshida and Satoshi Miyazaki, for
opening the Subaru Telescope to collaborate with the New
Horizons mission.
Finally, W.C.F. would like to thank B.C.P. and D.R. for their
insightful comments.
Software: parallel (O. Tange 2011), numpy (C. R. Harris
et al. 2020), matplotlib (J. D. Hunter 2007), TRailed Imaging in
Python, (W. Fraser et al. 2016), astropy (Astropy Collaboration
et al. 2013, 2018), SExtractor (E. Bertin & S. Arnouts 1996).Peer reviewe
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
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
Author Under Sail The Imagination of Jack London, 1893-1902
No full textIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Intro -- Title Page -- Copyright Page -- Dedication -- Contents -- Acknowledgments -- Introduction -- 1. Spirit Truth -- 2. From Absorption to Theatricality and Back Again -- 3. "I Will Build a New Present" -- 4. Sons as Authors -- 5. Fathers as Publishers -- 6. The Daughter as Author -- 7. Lovers as Authors -- 8. At Sea with the Family -- 9. Yellow News, Yellow Stories -- 10. The Return Home -- Notes -- Bibliography -- Index -- About Jay WilliamsIn Author Under Sail, Jay Williams offers the first complete literary biography of Jack London as a professional writer engaged in the labor of writing. It examines the authorial imagination in London's work, the use of imagination in both his fiction and nonfiction, and the ways he defined imagination in the creative process in his business dealings with his publishers, editors, and agents. In this first volume of a two-volume biography, Williams traverses the years 1893 to 1902, from London's "Story of a Typhoon" to The People of the Abyss. The Jack London who emerges in the pages of Author Under Sail is a writer whose partnership with publishers, most notably his productive alliance with George Brett of Macmillan, was one of the most formative in American literary history. London pioneered many author models during the heyday of realism and naturalism, blurring the boundaries of these popular genres by focusing on absorption and theatricality and the representation of the seen and unseen. London created an impassioned, sincere, and extremely personal realism unlike that of other American writers of the time. Author Under Sail is a literary tour de force that reveals the full range of London as writer, creative citizen, and entrepreneur at the same time it sheds light on the maverick side of machine-age literature.Description based on publisher supplied metadata and other sources.Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, YYYY. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries
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