1,721,010 research outputs found
New Arilaziridinyldifluoroborates: Useful Suzuki-Miyaura reagents
No full textthis work describes the preparation of new
shelf-stable aziridinyldifluoroborates even in enantioenriched
form that can serve either as Suzuki–Miyaura reagents
and as new bifunctional Lewis pairs potentially
useful as catalysts or tweezers for small-molecule binding.
Such thus far undescribed aziridinedifluoroborates, which
can be used for the ortho-functionalization of aromatic aziridines,
are, to the best of our knowledge, the first examples
of aziridine-functionalized cross-coupling reagents. The
methodology could be expanded to other benzylamine derivatives
and aryl-substituted N-heterocycles in order to
obtain new shelf-stable organoboron reagents. More work is
underway in our laboratory in order to expand the synthetic
utility of these new reagents
Le Libertà e i diritti: categorie concettuali e strumenti di garanzia
No full textIl saggio affronta il tema delle libertà e dei diritti in prospettiva comparata, indagando gli strumenti concettuali utilizzati e le garanzie accordate nei diversi ordinamenti
Il Giappone
No full textIl saggio tratta i principali istituti dell'ordinamento costituzionale giapponese
"Civil Law" e "Common Law": aspetti pubblicistici
No full textIl saggio tratta, sotto il profilo pubblicistico, la distinzione tra ordinamenti c.d. di "common law" e quelli c.d. di "civil law"
Il “nuovo Sudafrica” sospeso tra parlamentarismo e presidenzialismo,
No full textL’articolo si incentra sulle dinamiche evolutive della forma di governo sudafricana disegnata dalla Permanent Constitution del 1996. Oltre all’analisi del dato giuridico-formale, ci si sofferma sul concreto dispiegarsi dei rapporti e degli equilibri tra gli organi costituzionali, rimarcando, tra l’altro, il ruolo svolto dai giudici costituzionali quale reale contrappeso alla preponderanza dell’Esecutivo.[...
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
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