1,720,964 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
Development of therapies for overcoming EMT-associated irreversible tyrosine kinase inhibitor resistance in EGFR lung cancer
Full text link変異型EGFR選択的TKIは、2016年に本邦でも承認された肺癌の治療薬である。しかし、この薬にも耐性が獲得されることが予測され、これまでの研究より上皮間葉移行(EMT)がその原因であることが示唆された。まず、EMT耐性克服方法としてAXL阻害効果を検証したが、効果は得られずAXLのEMT耐性への関与は認められなかった。一方、EMT関連転写因子のZEB1を抑制した結果、耐性株の間葉系から上皮系への逆行（MET)が起こり、感受性が回復した。さらに、ZEB1を標的にできる薬剤を探索した結果、薬剤AがZEB1を低下させMETを誘導すること見出し、EMT耐性の治療薬として有望であると考えられた。Irreversible tyrosine kinase inhibitor (ITKI) for the treatment of patients with mutant EGFR NSCLC has been approved in Japan recently. However, a lot of patients could be acquired resistance after treatment. While epithelial mesenchymal transition (EMT) was reported to be associated with the resistance, no optimal therapy has been identified. In this study, we first hypothesized that AXL plays an important role in EMT resistance and examined the effect of AXL inhibition on the EMT resistant cells. However, knock-down of AXL did not change the EMT phenotypes. Interestingly, we found that knock-down of ZEB1 induced mesenchymal-epithelial transition (MET) and restored sensitivity to EGFR-TKI. Furthermore, our drug screening revealed that Drug A strongly suppressed ZEB1 expression and induced MET, as well as restored ITKI sensitivity. These results suggest that Drug A could be a novel therapeutic strategy for overcoming EMT-associated ITKI resistance in mutant EGFR lung cancer.研究課題/領域番号:26860603, 研究期間(年度):2014-04-01 – 2016-03-31出典：研究課題「EGFR変異肺癌のEMTに起因する変異型EGFR選択的TKI耐性克服治療の開発」課題番号26860603
（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-26860603/26860603seika/）を加工して作成金沢大学がん進展制御研究所research repor
Development of ALK-TKI-resistant treatment due to EMT of ALK lung cancer
Full text linkALKチロシンキナーゼ阻害薬（ALK-TKI)はALK肺癌に著効を示す分子標的薬であり、臨床で使用されている。しかし、1～2年程度で耐性を獲得することが問題となっている。近年、その獲得耐性機構として上皮間葉転換（EMT)が注目されているが、克服治療は確立されていない。本研究により、マウスの耐性腫瘍モデルにおいて薬剤Aは上皮系を誘導することで耐性克服できることが示唆された。また、大規模スクリーニングにより5種類の阻害薬で耐性株のE-カドヘリン発現誘導能を確認した。これらの結果から、miR-200cの発現誘導がALK肺癌のEMTによる耐性克服の戦略として有望であることが強く示唆された。ALK rearrangement, most commonly EML4-ALK, is detected in approximately 5% of non-small cell lung cancer (NSCLC). While ALK tyrosine kinase inhibitor (TKI) shows dramatic clinical efficacy in ALK-rearranged NSCLC patients, almost all patients acquire resistance over time. Epithelial mesenchymal transition (EMT) was also reported to be associated with various targeted drugs, however, its involvement in ALK-inhibitor resistance is largely unknown. We found that pre-treatment with Drug A can overcome the resistance by reverting EMT, in vitro and in vivo, due to up-regulation of miR-200c. The results of drug screening on a 200 kinase inhibitor library showed that 5 drugs increased E-cadherin expression of the resistant cells. These findings indicate that chemical restoration of miR-200c could be useful to circumvent resistance due to EMT in ALK-rearranged NSCLC.研究課題/領域番号:16K19447, 研究期間(年度):2016-04-01 – 2018-03-31出典：研究課題「ALK肺癌のEMTに起因するALK-TKI耐性克服治療の開発」課題番号16K19447
（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-16K19447/16K19447seika/）を加工して作成金沢大学がん進展制御研究所research repor
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
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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