1,720,962 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
CA1 피라미드 세포의 수상돌기에서 대사성 글루탐산 수용체에 의한 지속성 Na+ 전류이 조절
Full text link학위논문 (박사)-- 서울대학교 대학원 : 의과대학 의과학과, 2019. 2. 호원경.피라미드 세포의 수상돌기에 존재하는 나트륨 채널은 시냅스 신호
를 증폭시켜 활동전위의 발생을 촉진시킨다고 알려져 있다. 그러나
수상돌기 나트륨 채널이 조절되는 기작은 거의 알려져 있지 않다.
본 저자는 이번 연구에서 , 해마 흥분성 시냅스 신호를 CA1 피라미
드 신경세포 (CA1-PNs) 의 근거리 수상돌기에 줄 때, 수상돌기의
흥분성이 일시적으로 증가하는 새로운 종류의 단기 시냅스 가소성
에 대해서 보고한다. 고빈도 자극 (HFS) 을 Schaffer collateral (SC)
경로에 줄 때, CA1-PNs의 수상돌기에서 대사성 글루탐산 수용체5
(mGluR5) 의존적인 칼슘 신호전달이 활성화되고, 칼모둘린 신호전
달경로를 거쳐서 Nav1.6 채널과 관련된 지속 나트륨 전류 (INa,P) 를
증가시킨다. HFS에 의한 수상돌기 INa,P 증가를 통해 흥분성 시냅스
후 전위 (EPSP) 가 일시적으로 증가하는데, 이러한 현상은 HFS를
근거리 수상돌기에 줄 때 뿐 아니라 원거리 수상돌기 에 줄 때에도
관찰된다. 이 때, 활동전위 역치 가 감소되어 활동전위 발생빈도가
증가하고, 활동전위 발생 속도가 증가하며 , 활동전위 발생의 정확도
와 발생시기도 단축된다. 종합적으로, 본 저자는 수상돌기의 INa,P가
활동 의 존적 으로 수지상 집적화를 조절하고, 또한 신경세포의 출력
을 조절하는데 관여 하는 새로운 타겟임을 발견했다. 한편, 생리자극
과 동일한 정도의 고빈도 자극을 CA1-CA3 시냅스에 줄 때에도
mGluR5이 활성화 되는데, 이 때 mGluR5에 의해 증가한 CA1-
PNs 수상돌기의 INa,P는 해마의 place field 형성 을 이해하는데 중요
한 단서가 될 수 있다.Dendritic Na+ channels in pyramidal neurons are known to amplify synaptic
signals, thereby facilitating action potential (AP) generation. However, the
mechanisms that modulate dendritic Na+ channels have remained largely
uncharacterized. Here, I report a new form of short-term plasticity in which
proximal excitatory synaptic inputs to hippocampal CA1 pyramidal neurons
(CA1-PNs) transiently elevate dendritic excitability. High-frequency
stimulations (HFS) to the Schaffer collateral (SC) pathway activate mGluR5-
dependent Ca2+ signaling in the apical dendrites, which, with calmodulin,
upregulates specifically Nav1.6 channel-mediated persistent Na+ currents (INa,P)
in the dendrites. This HFS-induced increase in dendritic INa,P results in transient
increases in the amplitude of excitatory postsynaptic potentials induced by both
proximal SC and distal perforant path stimulation, leading to the enhanced
probability of AP firing associated with decreased AP thresholds, as well as,
leading to increasing firing rate and advancement of spike timing with an
improvement of temporal precision. Taken together, my study identifies
dendritic INa,P as a novel target for mediating activity-dependent modulation of
dendritic integration and neuronal output. As mGluR5 activation is induced by
physiologically plausible brief high-frequency stimulation at CA3-CA1
synapses, my results also suggest that mGluR5-induced enhancement of
dendritic INa,P in CA1 -PNs may therefore provide important implications for
our understanding about place field formation in the hippocampus.Abstract .................................................................................................. i
Contents................................................................................................ iii
List of figures ....................................................................................... iv
List of abbreviations ............................................................................ vi
Introduction .......................................................................................... 1
Material and Methods .......................................................................... 5
Results.................................................................................................. 10
Discussion ............................................................................................ 57
References............................................................................................ 71
Abstract in Korean ............................................................................. 81Docto
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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