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Sintesi di un modello dinamico agli elementi finiti per la misura in esercizio delle sollecitazioni su pale di un turbocompressore assiale
No full textMisure simultanee del moto valvola e del flusso di aspirazione in motori a combustione interna mediante tecniche di misura ottiche non intrusive
No full textSimultaneous measurement of inlet flow and valve motion in internal combustion engines by laser Doppler techniques
No full textScanning Laser Doppler Vibrometry for the characterization of the damping loss factor in honeycomb panels
No full textVibro-acoustic design of covers for belt drives
No full textIn the development of modern engines, one of the most critical aspects is represented by the reduction of noise emission for the optimization of interior acoustics in vehicles and the minimization of pass-by noise. The covers, which are always present in engines for different purposes (valve and distribution covers, oil pan...), have become a relevant noise radiation cause, justifying any effort made to reduce their contribution to the overall noise produced. This paper describes a systematic approach to the problem. An optimization process is put into place, which would be able to provide effective design modifications. Such a process is based on an accurate vibro-acoustic modeling by means of simulation codes as well as on an experimental stage, necessary to develop and validate the numerical models. All the steps of this optimization process have been applied to the practical case of a cover for belt drives and are presented in this paper
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
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