1,721,300 research outputs found
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
Diabetes mellitus after liver transplantation: a possible relation with the nutritional status
No full textBiology and physiopathology of tissue factor and its relevance for cardiovascular diseases
No full textAge disparities in transplantation
No full textPurpose of review: The aim of this review is to outline disparities in liver and kidney transplantation across age spectrum. Disparities do not involve only recipients whose age may severely affect the possibility to access to a potentially life-saving procedure, but donors as well. The attitude of transplant centers to use older donors reflects on waiting list mortality and drop-out. This review examines which age categories are currently harmed and how different allocation systems may minimize disparities.
Recent findings: Specific age categories suffer disparities in the access to transplantation. A better understanding of how properly evaluate graft quality, a continuous re-evaluation of the most favorable donor-to-recipient match and most equitable allocation system are the three key points to promote 'justice and equality' among transplant recipients.
Summary: The duty to protect younger patients waiting for transplantation and the request of older patients to have access to potentially life-saving treatment urge the transplant community to use older organs thus increasing the number of available grafts, to evaluate new allocation systems with the aim to maximize 'utility' while respecting 'equity' and to avoid 'futility' thus minimizing waiting list mortality and drop-out, and improving the survival benefits for all patients requiring a transplant
Biology and physiopathology of tissue factor and its relevance for cardiovascular diseases
No full textVariations 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
Applicazione di misure agroambientali e paesaggio rurale: un caso di studio
No full textLe recenti politiche per lo sviluppo rurale promuovono lo sviluppo di un’agricoltura multifunzionale, prevedendo l’introduzione di misure agroambientali indirizzate alla riduzione dell’impatto delle produzioni agricole, alla tutela della componente naturale ed alla conservazione de paesaggio rurale. Una delle maggiori novità introdotte daì regolamenti per lo sviluppo rurale (Reg. CE 1257/99, Reg. CE 1750/99) è la notevole attenzione verso la valutazione degli effetti prodotti dai programmi locali. Sono previsti diversi momenti di valutazione (ex-ante, intermedia ed ex-post) codificati a livello europeo secondo standard comuni al fine di rendere possibile valutazioni comparate tra gli stati membri e sintetiche a livello europeo.
In questo contesto il presente lavoro si pone come obiettivo lo sviluppo di un approccio metodologico per l’analisi degli effetti delle misure agroambientali sul paesaggio rurale della Regione Friuli Venezia Giulia. Il metodo è stato finalizzato all’individuazione del livello di coerenza tra gli interventi previsti dalle misure agroambientali del PSR locale e le caratteristiche del paesaggio regionale.
Le procedure per il calcolo delle superfici impegnate ricadenti nelle unità di paesaggio regionali hanno consentito di superare le problematiche legate all’aggregazione a livello comunale dei dati di superficie. La formalizzazione di apposite schede ha consentito l’analisi della coerenza tra gli interventi attuati e le caratteristiche del paesaggio interessato
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