257,050 research outputs found
On the use of simulated experiments in designing tests for material characterization from full-field measurements
No full textThe present paper deals with the use of simulated experiments to improve the design of an actual mechanical test. The analysis focused on the identification of the orthotropic properties of composites using the unnotched Iosipescu test and a full-field optical technique, the grid method. The experimental test was reproduced numerically by finite element analysis and the recording of deformed grey level images by a CCD camera was simulated trying to take into account the most significant parameters that can play a role during an actual test, e.g. the noise, the failure of the specimen, the size of the grid printed on the surface, etc. The grid method then was applied to the generated synthetic images in order to extract the displacement and strain fields and the Virtual Fields Method was finally used to identify the material properties and a cost function was devised to evaluate the error in the identification. The developed procedure was used to study different features of the test such as the aspect ratio and the fibre orientation of the specimen, the use of smoothing functions in the strain reconstruction from noisy data, the influence of missing data on the identification. Four different composite materials were considered and, for each of them, a set of optimized design variables was found by minimization of the cost function
Download Full Issue Volume 10, No. 1, Maret 2021
No full textDownload Full Issue Volume 10, No. 1, Maret 202
Measuring industry-science links through inventor-author relations: A profiling method
No full textIn this pilot study we examine the performance of text-based profiling in recovering a set of validated inventor-author links. In a first step we match patents and publications solely based on their similarity in content. Next, we compare inventor and author names on the highest ranked matches for the occurrence of name matches. Finally, we compare these candidate matches with the names listed in a validated set of inventor-author names. Our text-based profile methodology performs significantly better than a random matching of patents and publications, suggesting that text-based profiling is a valuable complementary tool to the name searches used in previous studies.innovation; industry-science links; text-based profiling;
Dual And Triple Feeding For Full-Wave Dipole Antenna [TK7871.67.D56 H677 2007 f rb].
No full textTesis ini menfokus kepada pembangunan teknik baru untuk suapan antena dwikutub gelombang penuh. Terdapat tujuh cara suapan dalam kajian ini, empat cara untuk dua suapan dan tiga cara untuk tiga suapan.
This thesis is focused on the development of a new full-wave dipole antenna feeding technique. Seven such techniques of feeding were tested in the study, in which, four were used with dual feeding and three with triple feeding
Variations on the Author
No full text“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
Letter from Leonard F. Wing to his father Leonard F. Wing, 7 September 1945
No full textLetter from Leonard F. Wing to his father Leonard F. Win
TIFF: Gyrofluid Turbulence in Full-f and Full-k
No full textA model and code (TIFF) for isothermal gyrofluid computation of
quasi-two-dimensional interchange and drift wave turbulence in magnetized
plasmas with arbitrary fluctuation amplitudes (full-f) and arbitrary
polarization wavelengths (full-k) is introduced. The model reduces to the
paradigmatic Hasegawa-Wakatani model in the limits of small turbulence
amplitudes (delta-f), cold ions (without finite Larmor radius effects), and
homogeneous magnetic field. Several solvers are compared for the generalized
Poisson problem, that is intrinsic to the full-f gyrofluid (and gyrokinetic)
polarization equation, and a novel implementation based on a dynamically
corrected Fourier method is proposed. The code serves as a reference case for
further development of three-dimensional full-f full-k models and solvers, and
for fundamental exploration of large amplitude turbulence in the edge of
magnetized plasmas
Letter from Leonard F. Wing to his father Leonard F. Wing, 27 August 1945
No full textLetter from Leonard F. Wing to his father Leonard F. Wing, letting him know that he received a promotion. Local news sources are speculating that Leonard F. Wing (father) will run for the Senate after he is dischanged. Leonard (son) hopes they are both discharged at the same time and can spend more time together
Letter from Leonard F. Wing (father) to his son Leonard F. Wing, 18 September 1945
No full textLetter from Leonard F. Wing (father) to his son Leonard F. Wing announcing that the 43rd Army will be demobilizing back to the U. S. and they will likely not see each other as planned. He mentions that he has not been feeling well but assures his son that the doctors are telling him not to worry. (Leonard F. Wing passed away from a heart attack in December, 1945.) He also relates the devastation in multiple Japanese cities.Transcription may be subject to error
Author Co-Citation Analysis (ACA): a powerful tool for representing implicit knowledge of scholar knowledge workers
No full textIn the last decade, knowledge has emerged as one of the most important and valuable organizational assets. Gradually this importance caused to emergence of new discipline entitled ―knowledge management‖. However one of the major challenges of knowledge management is conversion implicit or tacit knowledge to explicit knowledge. Thus Making knowledge visible so that it can be better accessed, discussed, valued or generally managed is a long-standing objective in knowledge management. Accordingly in this paper author co- citation analysis (ACA) will be proposed as an efficient technique of knowledge visualization in academia (Scholar knowledge workers)
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