1,721,249 research outputs found
Auditory and Visual Sensations
No full textProfessor Yoichi Ando, acoustic architectural designer of the Kirishima International Concert Hall in Japan, presents a comprehensive rational-scientific approach to designing performance spaces. His theory is based on systematic psychoacoustical observations of spatial hearing and listener preferences, whose neuronal correlates are observed in the neurophysiology of the human brain. A correlation-based model of neuronal signal processing in the central auditory system is proposed in which temporal sensations (pitch, timbre, loudness, duration) are represented by an internal autocorrelation representation, and spatial sensations (sound location, size, diffuseness related to envelopment) are represented by an internal interaural crosscorrelation function. Together these two internal central auditory representations account for the basic auditory qualities that are relevant for listening to music and speech in indoor performance spaces. Observed psychological and neurophysiological commonalities between auditory and visual sensations and preference patterns are presented and discussed. This book thus spans the disciplines of physics, acoustics, psychology, neurophysiology, and music production, thereby blending science, engineering, and art
トポロジカル ゼツエンタイ オヨビ ソノ カンレン ブッシツ ノ ゴウセイ ト ブッセイ ケンキュウ
Full text linkKazuma Eto, A. A. Taskin, Kouji Segawa, and Yoichi Ando, Physical Review B, vol.81, 161202, 2010 of publication. "Copyright (2010) by the American Physical Society."Kazuma Eto, Zhi Ren, A. A. Taskin, Kouji Segawa, and Yoichi Ando, Physical Review B, vol81, 195309, 2010 of publication. "Copyright (2010) by the American Physical Society."S. Souma, K. Eto, M. Nomura, K. Nakayama, T. Sato, T. Takahashi, Kouji Segawa, and Yoichi Ando, Physical Review Letters, vol.108, 195309, 2012 of publication. "Copyright (2012) by the American Physical Society."K. Nakayama, K. Eto, Y. Tanaka1, T. Sato, S. Souma, T. Takahashi, Kouji Segawa, and Yoichi Ando, Physical Review Letters, vol.109, 236804, 2012 of publication. "Copyright (2012) by the American Physical Society.
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
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
An extended infrared study of the p, T phase diagram of the p doped Cu O plane
Full text linkThe ab plane optical conductivity of 11 single crystals, belonging to the families Sr2 amp; 8722;xCuO2Cl2, Y1 amp; 8722;xCaxBa2Cu3O6, Bi2Sr2 amp; 8722;xLaxCuO6 and Bi2Sr2CaCu2O8, has been measured with hole concentrations p between 0 and 0.18 and for 6 K amp; 10877; T amp; 10877; 500 K to obtain an infrared picture of the p,T phase diagram of the Cu O plane. At extreme dilution p 0.005 , a narrow peak is observed at 1570 cm amp; 8722;1 195 meV , which we assign to a single hole bound state. For increasing doping, that peak broadens into a far infrared FIR band whose low energy edge sets the insulating gap. The insulator to metal transition IMT occurs when the softening of the FIR band closes the gap, thus evolving into a Drude term. In the metallic phase, a multi band analysis identifies a mid infrared band which weakly depends on temperature and softens for increasing p, while the extended Drude analysis leads to an optical scattering rate larger than the frequency, as was found in other cuprates. The infrared spectral weight W T is consistent with a Fermi liquid renormalized by strong correlations, provided that the T4 term of the Sommerfeld expansion is included above 300 K. In the superconducting phase, the optical response of single layer Bi2Sr2 amp; 8722;xLaxCuO6 at optimum doping is similar to that of the corresponding optimally doped bilayer Bi2Sr2CaCu2O
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