1,720,976 research outputs found
Product Environmental Footprint (PEF) study of contracted supply service for school meals
No full textLo studio di Product Environmental Footprint (PEF) presentato in questo documento è stato svolto nell’ambito del progetto LIFE EFFIGE. Oggetto dello studio è un prodotto virtuale definito a partire dal caso studio CAMST e rappresentativo, per gli aspetti tecnologici e organizzativi, della fornitura pasti scolastici in Italia. Questo studio è alla base delle PEF Category Rules (PEFCR) relative ai servizi mensa scolastica appaltati, documento prodotto da ENEA nell’ambito del progetto. Il documento contiene una descrizione dettagliata dell’inventario e i risultati di valutazione di impatto relativi alla fornitura di 200 pasti scolastici
Sharing economy and circular economy. How technology and collaborative consumption innovations boost closing the loop strategies
No full textSharing economy business experiences are rapidly rising worldwide and deeply changing structures and models of customers purchasing attitudes and needs. Inspired by principles of sustainable consumption, its starting point is the idea that every underutilized resource is a wasted resource. Beyond the digital services implemented by sharing platform, there are also social and physical places where communities are experimenting the potential of collaborative and innovative solutions: purchasing groups, time banking, social street, co-working spaces. Goods and services access promoted by sharing business models are emerging in the place of older model based on private propriety and a consumerist view of society. This is strongly connected with circular economy strategies, particularly referred to waste prevention, reduction and resources valorisation European goals. This paper gives an overview of sharing economy including drivers and barriers which can affect its effective expansion. Moreover, collaborative models in the most strategic and critical sectors (such as mobility, agro-food, buildings and goods production and consumption) by a resources perspective, will be analysed to show how sharing economy can contribute to circular economy. At this end, this paper explores the circularity approach and in particular it identifies the role of sharing economy in products and services from a life cycle thinking (LCT) approach. The focus will be the benefits ofthe sharing economy models considering mainly two aspects; a) the length of the product’s use phase (lifetime) and b) the intensity of use. A review of available data considering the most strategic sectors in terms of environmental impacts, will also be presented from a sharing economy point of view. © 2017, Gh. Asachi Technical University of Iasi. All rights reserved
Studio sperimentale e clinico sull’ utilità terapeutica della citidin - difosfocolina nel miglioramento della funzione visiva in pazienti giovani affetti da ipertensione endoculare e miopia.
No full text
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
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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