1,720,965 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
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
Understanding of vagus nerve in hepatic glucose metabolism by a central insulin action
Get PDF肝糖代謝調節において、中枢神経から迷走神経を介した制御メカニズムの重要性が指摘されている。中枢神経インスリン作用による肝糖代謝制御に、迷走神経とクッパー細胞が関与することが報告されているものの、その分子メカニズムは十分に明らかにされていない。代表者は、１）視床下部がインスリンを感知すると、肝臓へ分布する迷走神経の活動が低下すること、２）視床下部のインスリン作用による肝臓IL-6発現の増加は、α7ニコチン性アセチルコリン受容体（α7nAChR）を介したクッパー細胞活性抑制の減弱により誘導されること、３）肥満では視床下部のインスリン作用での迷走神経の活動変化が消失することを明らかにした。Central insulin action suppresses the gene expression of hepatic gluconeogenic enzymes. The vagus nerve plays an important role in this centrally mediated hepatic response; however, the precise mechanism underlying this brain-liver interaction is unclear. Here, we present our findings that the vagus nerve suppresses hepatic gluconeogenesis via α7-nicotinic acetylcholine receptors (α7-nAchR) on Kupffer cells, and that central insulin action activates hepatic IL-6 release by suppressing vagal activity. In high-fat diet-induced obese and insulin-resistant mice, control of the vagus nerve by central insulin action was disturbed, inducing a persistent increase of inflammatory cytokines. These findings suggest that dysregulation of the α7-nAchR-mediated control of Kupffer cells by central insulin action may affect the pathogenesis of chronic hepatic inflammation in obesity.研究課題/領域番号:26860693, 研究期間(年度):2014-04-01 - 2015-03-31出典：研究課題「中枢神経インスリン作用による肝糖代謝制御における迷走神経の役割の解明」課題番号:26860693
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-26860693/26860693seika/）を加工して作成金沢大学医薬保健研究域医学系research repor
Role of hepatic proliferation on disorder of hepatic glucose metabolism
Get PDF肥満・インスリン抵抗性モデルマウスは、肝糖産生の増加と肝肥大を伴う脂肪肝を呈する。本研究では、肝細胞増殖制御が、肥満・インスリン抵抗性状態における肝糖代謝異常に果たす役割を解明するため、肝臓特異的Cyclin D1欠損マウスを作出した。肝臓特異的Cyclin D1欠損マウスは、高脂肪食負荷による肥満・インスリン抵抗性誘導状態、あるいはレプチン受容体欠損肝臓特異的Cyclin D1欠損マウスの随時摂食時において、体重、血糖値で有意な差を生じなかった。今後は、糖脂質代謝パラメーター解析・高インスリン正常血糖クランプなどの表現型解析を行う。Obesity-Insulin resistance is known to increase of hepatic gluconeogenesis and hepatic steatosis associated with enlarged liver. To understand the role of control of hepatic proliferation on disorder of hepatic glucose metabolism, we generated the liver specific Cyclin D1 knockout (KO) mouse. In this KO mouse treated with high fat diet or db/db-background, there was no significant difference in body weight and blood glucose level under ad lib fed conditions. To explain more fully, we will performed hyperinsulinemic-euglycemic clamps in these mice.研究課題/領域番号:24790919, 研究期間(年度):2012-04-01 - 2014-03-31出典：「肥満・インスリン抵抗性における肝糖代謝異常に果たす肝細胞増殖制御機構の役割」研究成果報告書 課題番号24790919
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-24790919/24790919seika/）を加工して作成research repor
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
自律神経を介した代謝調節の加齢・肥満による変化の解析
Get PDF本研究では、迷走神経活動を合成リガンドで制御しうるマウスモデル（DMV-hM3Dq/DMV-hM4Diマウス）を作出し、研究に用いた。特異的リガンドCNOの投与により、DMV-hM3Dqマウスは迷走神経活動が活性化し、DMV-hM4Diマウスは迷走神経活動が減弱した。これらのマウスにおいて、CNOに応答した血糖値とインスリン分泌について検討した結果、DMV-hM3DqマウスはCNO投与によりインスリン分泌が促進し、DMV-hM4DiマウスはCNO投与によりインスリン分泌が抑制した。しかし、いずれも血糖値が上昇したことから、インスリン以外のホルモンの関与の検討も行う必要があると考えられる。In this study, we used DMV-hM3Dq / DMV-hM4Di mice and examined effects of aging and obesity on changing role of vagal nerve. In DMV-hM3Dq mice, CNO administration activated vagus nerve activity and induced insulin secretion, immediately. In DMV-hM4Di mice, CNO administration suppressed vagus nerve activity and inhibited insulin secretion, transiently. However, these mice (both DMV-hM3Dq and DMV-hM4Di) exhibited elevation of blood glucose levels by treatment with ligand. These data suggested a need for analysis of other hormones except for insulin.研究課題/領域番号:16K01815, 研究期間(年度):2016-04-01 - 2019-03-31出典：研究課題「自律神経を介した代謝調節の加齢・肥満による変化の解析」課題番号16K01815
（KAKEN：科学研究費助成事業データベース（国立情報学研究所））
（https://kaken.nii.ac.jp/report/KAKENHI-PROJECT-16K01815/16K01815seika/）を加工して作成research repor
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
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