1,720,961 research outputs found
Il tempo libero dei cybernauti: culture mediali a confronto
No full textNella moderna società dell'informazione, la comunicazione utilizza sempre più le nuove tecnologie e le reti globali, che offrono nuove forme di partecipazione culturale, aumentando le possibilità di interazione tra i soggetti. Quote crescente di persone affollano l'arena virtuale del cyberspazio e, tra queste persone, qualcuno sceglie spazi e percorsi tipici del tempo libero, integrando o sostituendo la gamma di opportunità: in Italia il loisir cybernauti sono i 12,5 % della popolazione di età compresa tra 14 anni (ISTAT 2000). L'obiettivo principale di questo saggio è quello di esplorare il rapporto rafforzativo o sostitutivo - tra cyber-attività e altri mezzi di comunicazione e attività extramediali del tempo libero, al fine di ottenere una mappa complessa del loisir vissuto dagli utenti del cyberspazio e la loro caratteristiche socio-demografiche. Evitando qualsiasi classificazione a priori e adottando un approccio empirico-multidimensionale la ricerca ha evidenziato alcune segmentazioni della popolazione di riferimento, che può essere correlata a diverse istanze esistenziali. La strategia di analisi empirica ha portato alla individuazione di quattro diverse tipologie di cybernauti loisir –l’indorr, ’outdoor, il ludico-interattivo, lo strumentale raffinato che si diversificano sia in termini generazionali, sia per un diverso mix di loro mezzi di comunicazione e attività extramediali, sia per una diversa competenza nell'uso di Internet e dei nuovi media. Mentre i tassi di non-esperti supereranno quelle di esperti tra gli adulti confermando il modello a forma piramidele che rappresenta di solito più larghe fasce di popolazione in corrispondenza di un mix più svantaggiato culturalmente, tra i giovani questo rapporto è rovesciato: la multimedialità caratterizza un maggior numero di soggetti che sono in grado di integrare i media tradizionali e quelli innovativi
Indicazioni ai trattamenti ormone chemioterapico nel carcinoma mammario della donna anziana
No full textWe well know from long time that breast cancer growth
is influenced by hormonal situation of patients. Thus
estrogenic stimolant effects are well studied. For hor monal
treatment,menopausal state is very significant.Infact the origin of estrogenic production is different from pre to post menopausal state. Hormonal treatment needs the evaluation of estrogenic and progestinic receptors expression.Endocrinotherapy can be used alone or in association with chemotherapy thanks to the absence of crossresistence. Similary to pre-menopausal situations, chemotherapy in post-menopausal women is indicated in primaryadjuvant and metastatic desease regims
Cardiotossicità dei farmaci chemioterapici nella paziente anziana
No full textAn adverse reaction is defined such as treatment response which
caused toxic effects with a normal dose. The most important pharmaceutic agents with cardiotoxic effects are: anthracycline,
ciclophosphamide, Fluorouracil and many others.C a r d i o - t o x i c i t y , associated to chemotherapy with this agents can be divided in acute one and cronic one. Moreover there are very
important risk factors, such as cumulative dose, pre-existent cardiac diseases, age of patients and the eventual use of cardio-pro tective agents
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
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe 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
Get PDFWe 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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