1,720,972 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
Large-area formation of atomically flat diamond (111) surface and ceration of the functions
Get PDFプラズマCVDを用いたダイヤモンド結晶成長モードを制御することで、ダイヤモンド表面を原子レベルで制御することを行った。その結果、デバイスサイズ100×100μm2のステップフリーダイヤモンド(111)表面の形成に成功した。また、単原子ステップを持つ正三角形島構造を世界最小のナノメートルスケールの物差しとして提案した。The control of diamond surface in atomic level has been studied by controlling the diamond crystal growth using plasma-enhanced CVD. As a result, 100×100μm2 step-free surface of diamond (111) was successfully formed. The diamond nano-structure, which was composed of equivalent triangular islands with single steps, was suggested as world's smallest nanometer-sized ruler.出典：研究課題「原子的に平坦なダイヤモンド(111)表面の大面積形成及びその機能の創出」課題番号20760455
（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-20760455/20760455seika/）を加工して作成金沢大学ナノマテリアル研究所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
Basic study for development of inch-scale diamond wafers
Get PDF本研究は、超省エネ化に資する次世代ダイヤモンドパワーデバイス実現のために必要なダイヤモンドウェハの大面積（２インチ以上）・低コスト化に関する基盤技術の開発を目的とした。その結果、ダイヤモンドヘテロエピタキシャル成長用基板としてNiの有効性を示した。具体的には、多結晶Ni基板上に多結晶ダイヤモンド膜を成長することに成功し、かつダイヤモンド/Ni界面に析出したグラファイトにより、そのダイヤモンド膜は自然剥離により自立化可能であることを示した。The purpose of this study has been to develop the fundamental technologies about a large-area and low-cost fabrication of diamond wafers for the realization of next-generation diamond power devises. We report that freestanding diamond films were fabricated by a new self-separation method. Thick poly-crystalline diamond films were grown on poly-crystalline Ni substrates by microwave plasma-enhanced chemical vapor deposition after the substrates were saturated with carbon via a saturation process using a carbon solid solution. This saturation process suppressed the erosion of diamond nuclei on the Ni substrates. During the cooling process after diamond growth, the carbon atoms dissolved in the Ni substrates became supersaturated and precipitated as graphite interlayers at the diamond films/Ni interfaces. The graphite interlayers caused the thick diamond films to spontaneously separate from the Ni substrates without cracking, allowing the Ni substrates to be reused.研究課題/領域番号:26600096, 研究期間(年度):2014-04-01 - 2017-03-31出典：「インチスケールダイヤモンドウェハ開発のための基盤研究」研究成果報告書 課題番号26600096
（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-26600096/26600096seika/）を加工して作成金沢大学ナノマテリアル研究所research repor
Basic study for development of ultra-low loss diamond power devices
Get PDFダイヤモンドは、次世代パワーデバイス材料として最も高い省エネ効果が期待されている半導体材料である。本研究は、その材料・プロセス技術の高度化を行うことで、超省エネ化実現のための革新的デバイス特性を創出することを目的とした。本研究で、高品質なp型ダイヤモンド膜の成長技術の開発、超低抵抗率のδドープダイヤモンドの実現、そして、高品質なAl2O3/ダイヤモンド界面を有するダイヤモンドMOS構造の作製に成功した。Diamond is a semiconductor material for the next-generation power devices. The purpose of this study was to create the novel device performances for the realization of ultra-energy saving by elevating its material and process techniques. In this study, we succeeded in the development of the growth techniques of high-quality p-type diamond films, the realization of delta-doped diamond with ultralow resistivity, and the fabrication of diamond MOS structures with high-quality Al2O3/diamond interfaces.研究課題/領域番号:24686074, 研究期間(年度):2012-04-01 - 2015-03-31出典：研究課題「超低損失ダイヤモンドパワーデバイス開発のための基盤研究」課題番号24686074
（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-24686074/24686074seika/)を加工して作成金沢大学ナノマテリアル研究所research repor
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
Low-loss vertical-type diamond power MOSFET
Get PDFダイヤモンドは、様々な分野で用いられているパワーデバイスとして最も高い省エネ効果が期待されている半導体材料である。本研究で得られた主な成果は、①縦型ダイヤモンドMOSFET構造作製のための、炭素固溶反応を用いたV字及びU字トレンチ構造形成プロセスの開発、②低チャネル移動度の原因となっているAl2O3/ダイヤモンド界面における界面準位密度の定量評価、③界面準密度の低減プロセスの開発であるDiamond is a semiconductor material expected to realize the highest energy-saving effect as a power device used in various fields. In this study, we obtained the following three results: (1) development of V-shaped and U-shaped trench structure formation process using solid solution reaction of carbon for fabrication of vertical diamond MOSFET structure, (2) a quantitative evaluation of interface state density at Al2O3/diamond interfaces which cause low channel mobility in diamond MOSFETs, (3) development of a reduction process of the interface state density.研究課題/領域番号:17H02786, 研究期間(年度):2017-04-01 - 2020-03-31出典：「低損失縦型ダイヤモンドパワーMOSFET」研究成果報告書 課題番号17H02786
（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-17H02786/17H02786seika/)を加工して作成金沢大学ナノマテリアル研究所research repor
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