1,721,164 research outputs found
Improvement of cold malleability of magnesium alloy by combining compression with cyclic torsion in upsetting
No full textTonomura Keisuke, Matsumoto Ryo, Kaneko Shinobu, et al. Improvement of cold malleability of magnesium alloy by combining compression with cyclic torsion in upsetting. Materials Today Communications 46, 112828 (); https://doi.org/10.1016/j.mtcomm.2025.112828
Image-Based Machine Learning of In Situ Captured Images of Die-Workpiece Interface in Forging
Get PDFMatsumoto Ryo, Kunisawa Shusuke, Nakamura Yusaku, et al. Image-Based Machine Learning of In Situ Captured Images of Die-Workpiece Interface in Forging. Defect and Diffusion Forum 441, 39 (2025); https://doi.org/10.4028/p-ex7ohs.The lubricant thickness in cold forging was estimated by machine learning of the in situ captured images of the die–workpiece contact interface. The images were in situ captured by a high-speed camera from the backside of the transparent glass die during forging of commercially pure aluminum workpiece. On the other hand, the images of the lubricated workpiece were individually captured as training images for random forest with classification. The classification accuracy of the lubricant thickness was confirmed to be approximately 75% (classification ability: 5–10 μm in lubricant thickness) in the training images with 22,500 px (50 px/mm). The in situ captured images of the die–workpiece contact interface during forging were classified by random forest using the training images. The estimated lubricant thickness of the in situ captured image almost agreed with the lubricant thickness estimated from the mean brightness value of the in situ captured image
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
マグノンの軌道角運動量と熱ホール効果(修士論文(2010年度))
Get PDFこの論文は国立情報学研究所の電子図書館事業により電子化されました。We theoretically investigate dynamics of the magnon wavepacket, by constructing the semiclassical equation of motion of the magnon wavepacket in insulating ferromagnets and utilizing an analogy of the electron systems. The magnon wavepacket undergoes two types of orbital motions: a self-rotation motion and a motion along the edge of the system, in other words, an edge current of magnon. These motions are attributed to the Berry curvature in momentum space, i.e., these arise from the magnon band structure. In particular, the edge current of magnon is expected to be visible by space- and time- resolved optical experimental method. Moreover, this edge current of magnon brings about the thermal Hall effect of magnon, and we present its intuitive picture. We also consider the thermal Hall effect by the linear response theory, and find correction terms to the previously known result, which are expressed as the orbital angular momentum of magnon. Furthermore, we also show that our theory is applicable to not only the exchange spin wave but also the magnetostatic spin wave. The magnetostatic spin wave has a long wave length and a good coherence in some magnet, e.g., yttrium iron garnet which is a well known material in experiments, and thus it is useful for spintronics devices
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
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
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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