1,720,984 research outputs found
Realizzazione di un impianto di solar cooling a servizio di una serra per colture intensive
Full text linkIl principale obiettivo del progetto “Studi e valutazioni sull’uso razionale dell’energia: Utilizzo dell’energia elettrica e solare per la climatizzazione estiva” che si sta svolgendo nell’ambito del programma di Ricerca di Sistema Elettrico in collaborazione con il Ministero dello Sviluppo Economico è di definire e sviluppare un sistema di produzione integrato che sia robusto, competitivo e di riferimento per il “sistema Italia”, in grado di assolvere l’intero compito della climatizzazione estiva e invernale. Il progetto ha inoltre l’obiettivo di comprendere in quali condizioni climatiche, con quali tecnologie e con quale politica di supporto possa essere avviata un’azione che porti a una diffusione di massa di sistemi di climatizzazione basati sull’energia solare o comunque assistiti da fonti rinnovabili
The quest fot new organizational forms: the strange case of open source software communities
No full textMy goal is to identify the principle organizational features of Open Source Software communities, to establish how coordination occurs within them, and to compare them with the structures and coordination mechanisms within conventional corporations. In the process it should be possible to shed light upon the fundamental tasks and processes of economic organization. I examine the principal features of conventional corporations and the changing environmental conditions which are creating the need for different types of organizational structures. I review the extent to which the novel organizational forms identified by different management scholars share common features, and the extent to which such organizational trends are capable of empirical verification. I then focus ecplicitly upon network organization. both interfirm networks ad then OSS communities
Perimetric study of high myopia patients with and without posterior pole retinal detachment
No full textThe functional head impulse test: preliminary data
No full textThe functional head impulse test is a new test of vestibular function based on the ability to recognize the orientation of a Landolt C optotype that briefly appears on a computer screen during passive head impulses imposed by the examiner over a range of head accelerations. Here, we compare its results with those of the video head impulse test on a population of vestibular neuritis patients recorded acutely and after 3 months from symptoms onset. The preliminary results presented here show that while both tests are able to identify the affected labyrinth and to show a recovery of vestibular functionality at 3 months, the two tests are not redundant, but complementary
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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