1,721,726 research outputs found
Esperienza e passione. Ernesto Grassi e il problema del fondamento
No full textEsperienza e passione. Ernesto Grassi e il problema del fondament
Una nota su Lattanzio Grassi (e Antonio Sacchiense)
Full text linkUna nota su Lattanzio Grassi (e Antonio Sacchiense
A Systematic Literature Review of Technology Social Ventures: State of the Art and Directions for Future Research at the Micro-, Meso- and Macro-Level
Full text linkTechnologies can play an important role in developing and scaling social innovations, thanks to their ability to reach and mobilise communities of people, use resources more effectively, and provide fast and broad responses to social needs. Seeing this potential, Technology Social Ventures have arisen as a form of social enterprises that employ technologies to achieve their social impact. This study has systematically reviewed the extant knowledge regarding Technology Social Ventures, applying a ‘micro-meso-macro’ framework to structure the analysis. The results from this multi-level approach revealed ten primary areas of inquiry on the topic, as well as showed that the research field is still in early development and has not been academically delineated from Social Enterprises. Based on these findings, the paper outlines a research agenda to address the existing gaps and advance the field’s development
Overeducation and overskilling in the early careers of PhD graduates: Does international migration reduce labour market mismatch?
No full textThis paper examines the effect of international mobility on the education-job mismatch and skill-mismatch of PhD graduates after controlling for self-selection into cross-border mobility. Using individual-level data from two waves of surveys of PhD recipients in Italy conducted by the Italian National Institute of Statistics, we find that migration to foreign countries reduces significantly the risk of overeducation and overskilling. These results remain robust to different empirical methodologies and subsamples
Paolo Grassi e Eduardo: alle origini di un’amicizia
No full textIl saggio analizza il rapporto tra Paolo Grassi e Eduardo De Filippo dal 1939 al 1954. I documenti e le testimonianze raccolte sono inedite o poco studiate.The essay analyzes the relationship between Paolo Grassi and Eduardo De Filippo from 1939 to 1954. The documents and testimonies collected are unpublished or little investigated.L'essai analyse la relation entre Paul Grassi et Eduardo De Filippo, de 1939 à 1954. Les documents et les témoignages recueillis sont inédits ou peu étudié
Grassi e antiossidanti
No full textI grassi (o lipidi) che introduciamo con la dieta possono essere di origine animale o vegetale e sono rappresentati prevalentemente dai trigliceridi. Gli acidi grassi sono una
famiglia numerosa di molecole che differiscono per lunghezza della catena, presenza di doppi legami e insaturazione cis o trans. I grassi sono metabolicamente importanti e oltre a costituire un’importante fonte di energia, facilitano l’assorbimento di molecole liposolubili presenti nella dieta quali le vitamine liposolubili (vitamina A, D, K, E).
Inoltre grassi e oli contribuiscono in modo sostanziale a fornire all’organismo acidi grassi essenziali.
Il colesterolo è il principale rappresentante degli steroli e lo possiamo considerare la molecola della vita. Nell’organismo umano esso svolge diversi ruoli fisiologici: è componente
delle membrane cellulari e delle lipoproteine plasmatiche, è precursore degli ormoni steroidei, della vitamina D3 e degli acidi biliari. Negli ultimi anni è emersa una rilevanza nutrizionale dei fistosteroli e fitostanoli, molecole presenti negli alimenti di origine vegetale. Numerosi studi hanno dimostrato che la loro assunzione contribuisce
a ridurre i livelli di colesterolo plasmatico riducendone il riassorbimento a livello intestinale.
- Una delle modificazioni composizionali a cui vanno incontro i lipidi sia dell’organismo sia degli alimenti è la perossidazione lipidica in presenza di radicali liberi dell’ossigeno (ROS). La perossidazione lipidica modifica la struttura dei lipidi con conseguenze sulle loro funzioni. I principali substrati della perossidazione lipidica sono gli acidi grassi mono e polinsaturi. La dieta ha un ruolo chiave nella modulazione della perossidazione lipidica in quanto fonte di sostanze con proprietà antiossidanti. Gli antiossidanti includono
sistemi di difesa enzimatica e non enzimatica
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
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