1,721,116 research outputs found
Principi e tecniche in chirurgia endovascolare: endoprotesi
No full textChirurgia vascolare : patologia, diagnosi e trattamento delle malattie vascolari di interesse chirurgico / Società italiana di chirurgia vascolare ed endovascolare, a cura di F. Benedetti-Valentini ; comitato di redazione: A. Argenteri ... \et al.! ; collaborazione redazionale: B. Gossetti
Torino : Minerva medica, 2001
[opac SBN] [Testo a stampa] [Monografia] [IT\ICCU\PUV\0715616
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
Cooperative innovation Evidence from Italian firms
No full textFor small and medium-sized enterprises (SMEs), R&D cooperation with sources of external knowledge is becoming
increasingly essential for fostering innovation activities. This paper investigates the effects of collaboration
on innovation by considering four different partner types: competitors, customers, suppliers, Universities
and Government laboratories. Using firm-level data from the Community Innovation Survey for the years
2006-2008 (CIS 2008) and applying a Heckman probit model with sample selection, we analyse the determinants
of cooperation and innovation probabilities for each type of partner. Results show that internal and external
R&D acquisitions, public financial support, as well as belonging to a scientific sector or to a business
group are significant determinants of the partners’choice for collaboration, although with different magnitude
across various types of collaborations
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
Cooperative Innovation: In Quest of Effective Partners. Evidence from Italian Firms
No full textIn recent years, rapid technological change, shorter product life cycles and globalization have deeply transformed the current competitive environment. These changes are inducing firms to face stronger competitive pressures which push them to develop new products, improve production processes or implement new technologies. Thus, firms need to continually acquire new knowledge and innovate. At the same time, entrepreneurs have become aware that technological innovation is less and less dependent on an isolated effort of an individual firm. For small- and medium-sized enterprises (SMEs), R&D cooperation with sources of external knowledge is becoming increasingly essential for fostering innovation activities. Using firm-level data from the Community Innovation Survey for the years 2006-2008 (CIS 2008) and applying a Heckman probit model with sample selection, we analyze the determinants of cooperative innovation for the different types of partners (competitors, customers, suppliers, universities and government laboratories). Results show that internal and external R&D acquisitions, public financial support, as well as belonging to a scientific sector or to a business group are significant determinants of choice in collaborations, although with different magnitude across various types of collaboration
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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