1,720,992 research outputs found
GUIGUW 0.2
No full textGUIGUW (Graphical User Interface for Guided Ultrasonic Waves) is an interactive program designed to calculate the dispersive properties of stress waves propagating in waveguides immersed in vacuum. Using GUIGUW, the user can easily identify and evaluate the possible acoustic waves existing in a wide range of structures. GUIGUW is developed in Matlab and compiled as a stand-alone software. The current version can be downloaded and used for free
Pyrolysis and thermally assisted hydrolysis-methylation-gas chromatography/mass spectrometry of sound and degraded wine bottle cork
No full textDetermination of diallyl thiosulfinate (allicin) in garlic (Allium sativum L.) by high-performance liquid chromatography with a post-column photochemical reactor
No full textMethod for idenfying obstructions in pipeline networks for transporting fluids
No full textIt is described a method for detecting and identifying obstructions in a pipeline network for transporting fluids, wherein the network is composed of a plurality of pipeline sections (P) and a plurality of junctions (N). The method comprising the following phases: acquiring the geometrical data of a predefined number of pipeline sections (P) for which the presence of obstructions has to be evaluated; measuring the actual flow-rate values (Q1) of the fluid in one or more pipeline sections (P) and of the actual pressure values (h1) of the fluid at one or more junctions (N) of the network; comparison between the values of the nominal diameters (D1) of said pipeline sections (P) and the corresponding equivalent diameters (Dieq) of said pipeline sections (P); calculating, by means of a specific numerical model, the theoretic flow-rate values (QiT) and pressure values (hiT) of the fluid for said equivalent diameters (Dieq). With = (Dieq) α x Di method provides a calculation phase of the value of the variables vector αi which minimize a function based on the discrepancy between the actual flow-rate (Qi) and pressure (hi) values effectively measured and the corresponding theoretical flow-rate (QiT) and pressure (hiT) values, wherein said calculation phase is performed by applying a certain own fitness function J(α) of the genetic algorithms (GAs)
Metodo per l’identificazione di occlusioni in reti di tubazioni per il trasporto di fluidi
No full textSi descrive un metodo per l’identificazione di occlusioni in una rete di tubazioni per il trasporto di fluidi, in cui la rete è composta da una pluralità di tronchi di tubazione (P) e da una pluralità di nodi (N). Il metodo comprende le fasi di: acquisizione dei dati geometrici di un numero predefinito di tronchi di tubazione (P) per i quali si vuole valutare la presenza di occlusioni; misurazione dei valori effettivi di portata (Qi) del fluido in uno o più tronchi di tubazione (P) e dei valori effettivi di pressione (hi) del fluido in corrispondenza di uno o più nodi (N) della rete; confronto tra i valori dei diametri di progetto (Di) di tali tronchi di tubazione (P) e i corrispondenti diametri equivalenti (D_i^eq) di tali tronchi di tubazione (P); calcolo, mediante uno specifico modello numerico, dei valori teorici di portata (Q_i^T) e di pressione (h_i^T) del fluido per tali diametri equivalenti (D_i^eq).
Posto D_i^eq=a_i×D_i, il metodo prevede una fase di calcolo del valore del vettore di variabili a_i che minimizzano una funzione basata sulla discrepanza fra i valori effettivi di portata (Qi) e di pressione (hi) effettivamente misurati e i corrispondenti valori teorici di portata (Q_i^T) e di pressione (h_i^T), in cui tale fase di calcolo viene effettuata applicando una determinata funzione di fitness J(a_i, i=1,2,..,numero tubi) propria degli algoritmi genetici (GAs)
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
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