1,720,967 research outputs found
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
Mechanism of cardio-renal interaction in atrial fibrillation
No full textThe population of atrial fibrillation is growing with aging of Japanese society. Atrial fibrillation causes renal dysfunction, however, the underlying mechanism was unknown. We have demonstrated that catheter ablation for atrial fibrillation improves renal function. The independent predictors of the improvement were young age and small left atrium. These results suggests that decreased renal blood flow caused by impaired atrial contraction would be the major cause of atrial fibrillation-induced renal dysfunction.心房細動は社会の高齢化に伴って増加している不整脈である。これは、動悸などの症状を引き起こすのみならず、腎機能を悪化させることが知られているが、その機序は不明である。我々は心房細動患者をカテーテル治療した後の腎機能を追跡したところ、年齢が低いこと、左心房の大きさが小さいことが腎機能改善の予測因子であった。これは、心房細動が心房の収縮を障害して腎血流量を低下させて腎障害を引き起こしており、カテーテル治療はそれを改善することを示唆する。研究課題/領域番号:18K08099, 研究期間(年度):2018-04-01 - 2022-03-31出典：「心房細動における心腎連関の機序解明」研究成果報告書 課題番号18K08099
（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/ja/report/KAKENHI-PROJECT-18K08099/18K08099seika/）を加工して作成金沢大学附属病院research repor
Variations on the Author
No full text“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
No full textWe 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
No full textWe 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
心房細動がもたらす凝固異常の病態解析と血液診断法の開発
No full text心房細動はありふれた不整脈の1種であるが、心臓の左心房に血栓を生じやすくし、脳梗塞の原因となる。その血栓形成の機序として、これまで心房内の血流のうっ滞、心房内の表面を覆っている内皮細胞の機能障害、また血液の凝固異常が考えられている。しかし、心房細動によって血液の凝固異常が起こるメカニズムは不明であった。我々は、心房細動がある患者とない患者の間で、凝固因子の産生臓器である肝臓の遺伝子発現プロファイルが異なることを見出した。また、心臓と肝臓を結びつけるものを検索したところ、血液中の単核球の関与が明らかとなった。このように、心房細動において心肝連関が存在し、血栓形成を促進していることを報告した。Most strokes in patients with atrial fibrillation (AF) are believed to be cardioembolic, caused by the embolism of left atrial thrombi. As shown by the well-known Virchow triad, thrombus formation in the left atrium (LA) can result from decreased blood flow, increased endocardial dysfunction in the LA, and enhanced blood coagulability. We examined whether AF affects gene expression remotely in the liver, which is a major source of prothrombotic molecules. DNA microarray analysis revealed marked changes in the gene expression profile of human liver of patients with AF. The extrinsic prothrombin activation pathway showed the most prominent change. Twelve hours of rapid atrial pacing also markedly altered the gene expression profile of rat liver, which was eliminated by IL-6 neutralizing antibody. These findings suggest the presence of cadiohepatic interaction mediated by the IL-6/STAT3 signaling pathway in AF and AF-related thromboembolism.研究課題/領域番号:15K09070, 研究期間(年度):2015-04-01 – 2019-03-31出典：「心房細動がもたらす凝固異常の病態解析と血液診断法の開発」研究成果報告書 課題番号15K09070
（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-15K09070/15K09070seika/）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
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
- …
