1,721,231 research outputs found
Ferrari S., Peresani M., Perrone R.
No full textPriva di un contesto stratigrafico e affetta da patine e da varie forme di alterazione, l’industria musteriana descritta in questa nota presenta una facies mista di produzione-utilizzo. Si hanno evidenze per supporre che alcuni manufatti finiti ed elaborati altrove venissero introdotti in questo sito. La variabilità tecnologica e alcune selci di provenienza sicuramente esterna all’area di Terme o alla regione euganea offrono degli elementi di distinzione rispetto ai siti limitrofi, come quello di Monte Versa. Ai vari manufatti Levallois e ai raschiatoi si associa la produzione discoide, attivata su blocchi e noduli irregolari e orientata verso l’ottenimento di supporti apparentemente destinati ad un utilizzo immediato. Si ipotizza che la collocazione dell’abitato, in prossimità di zone umide, fosse legata allo svolgimento di attività di produzione litica profondamente integrate al consumo di risorse e di materiali
Colli Euganei. Rinvenimenti di reperti Paleolitici nelle pianure perieuganee e loro significato geoarcheologico.
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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
Primo contributo allo studio morfoanatomico e micromorfologico su alcune specie di Serapias (Orchidaceae) della Sicilia
No full textColor Doppler appearance of penile cavernosal-spongiosal communications in patients with severe Peyronie’s disease.
No full textClasses of sigma2 ( o-2) receptor ligands: structure affinity relationship (SAfiR) studies and antiproliferative activity
No full textAlthough several pieces of information are still missing about sigma-2 receptor, the production of high affinity sigma-2 receptor ligands allowed important acquisitions. Morphans such as CB64D and CB184 were the first truly 2-selective ligands synthesized, and their use in cell cultures highlighted the relationship between sigma-2 receptors and cell proliferation, shedding light on important diagnostic and therapeutic potentials with which sigma-2 ligands are endowed. The most significant classes of compounds are herein discussed. The design and Structure-Affinity Relationship studies (SAfiR) of 2 receptor ligands belonging to the classes of morphans, indoles (siramesine analogues), granatanes, flexible benzamides and N-cyclohexylpiperazines are reported, together with the biological results which these compounds provided giving a crucial contribution to the sigma-2 receptor research. The pharmacophore models which were generated on the basis of different classes of the sigma-2 ligands and the attempts for 2 receptor purification are briefly described
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