1,721,416 research outputs found
La unidad de lo dual. El remanso de Tadao Ando y el remolino de Toyo Ito
Full text linkCANDEL ROVIRA, GONZALO (2015). La unidad de lo dual. El remanso de Tadao Ando y el remolino de Toyo Ito. Octubre 2015. Zaragoza: Ecos de Asia
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
THE RELIEF PERSPECTIVE OF THE AVILA CHAPEL IN SANTA MARIA IN TRESTEVERE
No full textThis paper describes the projective transformations of the relief perspective of Avila
Chapel in Santa Maria in Trastevere in Rome. The little Chapel was designed by Antonio Gherardi
and commissioned by Pietro Paolo Avila in 1678. The research is structured according to the
following steps. The Survey Model: acquisition of morphological metric data by means of 3D laser
scanning and structure from motion procedures and subsequent elaboration of a Survey Model which
is a mathematical representation of the current state of the architectural object. The Relief Perspective
Camera and the Projective Transformations: experimentation with the ‘perspective camera’ defined
by generative digital representation. The Camera is used to study the relations between the projective
space and the affine space and vice-versa. Thus we can apply inverse transformations to the Survey
Model in order to trace the ideal position of the projection centre. The Ideal Model: construction of
the Ideal Model of the illusory architecture conceived by the author and based on the proportions and
interpretation of the Survey Model transformed by the Perspective Camera. Transformation of the
Ideal Model through the perspective camera and comparison with the Survey Model. History of
perspective shows that there is a close connection between the theoretical evolution of relief
perspective (intended as science) and its application to art, stage design and architecture. Reviewing
this evolution means studying the relationship between space as it is and space as it look
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
Diagnostic system based on the human auditory-brain model for measuring environmental noise - An application to railway noise
No full textMeasurements of railway noise were conducted by use of a diagnostic system of regional environmental noise. The system is based on the model of the human auditory-brain system. The model consists of the interplay of autocorrelators and an interaural crosscorrelator acting on the pressure signals arriving at the ear entrances, and takes into account the specialization of left and right human cerebral hemispheres. Different kinds of railway noise were measured through binaural microphones of a dummy head. To characterize the railway noise, physical factors, extracted from the autocorrelation functions (ACF) and interaural crosscorrelation function (IACF) of binaural signals, were used. The factors extracted from ACF were (1) energy represented at the origin of the delay, Φ(0), (2) effective duration of the envelope of the normalized ACF, τe, (3) the delay time of the first peak, τ1, and (4) its amplitude, Φ1. The factors extracted from IACF were (5) IACC, (6) interaural delay time at which the IACC is defined, τIACC, and (7) width of the IACF at the τIACC, WIACC. The factor Φ(0) can be represented as a geometrical mean of energies at both ears as listening level, LL
Some considerations about the integration of r-ACF (awarded as best paper of the congress)
No full textThe integration of the autocorrelation function (r-ACF) over finite temporal windows presents well known signal analysis problems. This work shows how it is possible to perform the computation taking advantage from acknowledged methods and at the same time avoiding common problems. The aim of this work is to suggest how to obtain the most accurate results, optimizing the computation algorithms. In particular, this study investigates
how much different r-ACF integration methods affect the computed values of τe. The main results of previous r-ACF studies are discussed, then different integration solutions are applied to two reference sample tracks, analyzing the corresponding significant factors. Finally, different optimization techniques of the integration parameters are presented and compared, with particular attention to their computational load
Electron transport properties in magnetic tunnel junctions with epitaxial NiFe (111) ferromagnetic bottom electrodes
No full textBy employing epitaxial NiFe (111) films as ferromagnetic bottom electrodes, magnetic tunnel junctions with layer sequence of Si (111)/epitaxial Ag/epitaxial Cu/epitaxial NiFe/Al-oxide/CoFe/IrMn/NiFe/Ta were prepared. High tunneling magnetoresistance (TMR) ratios were obtained and the bias dependence of TMR was remarkably reduced. The reason for the small bias dependence of TMR was explained by inelastic electron tunneling spectroscopy. It was clearly elucidated that a well-defined sharp interface formed between the tunnel barrier and the ferromagnetic electrode that is nearly free of crystalline defects. This magnetic tunnel junction has a large capability in engineering aspects if we can reduce the barrier thickness further by decreasing the interface roughness. (C) 2003 American Institute of Physics.This study was supported by IT-program of Research
Revolution 2002 ~RR2002!, Grants-in-Aid for Scientific Research
from the Ministry of Education, Culture, Sports, Science
and Technology of Japan, CREST of JST ~Japan Science
and Technology!, and the Mitsubishi Foundation. In
addition, one of the authors ~J.H.Y.! gratefully acknowledges
partial support from the BK21 Project of the Ministry of
Education, Korea
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