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Amaretti senza amido e farina come ingredienti in sistemi alimentari ad alta umidità
Full text linkRiassunto
Due tipologie di amaretti sono state ottenute utilizzando diverse formulazioni, una contenente amido come strutturante (VR) ed una preparata in accordo all’attuale normativa (NR) che non ammette la presenza di amido nella formulazione. Gli amaretti formulati con la nuova ricetta (NR) hanno mostrato valori di densità e durezza minori di quelli ottenuti con la vecchia ricetta ma una friabilità non significativamente differente.
Le cinetiche di reidratazione e le caratteristiche meccaniche dei prodotti a diversi livelli di idratazione sono state studiate a seguito di immersione degli amaretti in soluzione di saccarosio a 25° C e di contatto su gelato a -15° C. In soluzione di saccarosio il prodotto NR ha mostrato una maggiore capacità di reidratazione ed una minore durezza e friabilità a tutti i livelli di idratazione. Nella reidratazione a -15° C su gelato il prodotto NR ha mostrato un acquisto di umidità non differente rispetto a VR ed una minore riduzione della friabilità, pur presentando una consistenza minore di VR a tutti i livelli di idratazione.
La sostituzione dell’amido nella formulazione di biscotti modifica le proprietà fisiche e meccaniche del prodotto ma può permette migliori performance in termini di friabilità a bassi livelli di umidità.Two types of ‘amaretti’ biscuits were produced with different formulations: one containing starch as a structuring agent (VR) and the other modified according to the current Italian legislation (NR) which does not permit the use of starch in the ‘amaretti’formulation. Amaretti formulated with the new recipe (NR) showed lower density and hardness than VR amaretti but not a significantly different friability value.
Rehydration experiments in sucrose solution (25° C) and on ice-cream (-15° C) were carried out and rehydration kinetics and texture changes upon rehydration were evaluated.
During rehydration in sucrose solution, the NR product showed a higher moisture uptake than VR and lower hardness and friability values at different hydration levels. When rehydration was carried out on ice-cream (at -15° C), NR showed a lower friability reduction than VR and a not different moisture uptake but it still showed lower hardness values than the latter at each hydration level.
The replacement of starch in biscuits formulation affects the physical and mechanical properties of the products but could permit better performance in terms of friability retention at low moisture content
Water antiplasticisation effect in starchy buscuits as affected by glucose and sucrose addition.
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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
"Nel luogo che mi è venuto meglio": note sulla grafica dei Quattro Libri
No full textIl saggio analizza il ruolo della grafica del trattato "I Quattro Libri dell'Architettura" di Andrea Palladio, alla luce delle considerazioni critiche, avanzando nuove ipotesi in merito a nuovi riferimenti che sono stati individuati. Trattasi di ipotesi originale finora mai avanzata da altri
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
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