1,720,958 research outputs found
The Italian Electronic Identity Card: a short introduction
No full textThe italian Electronic Identity Card (EIC, for short) is a polycarbonate smart card equipped with a microchip (supporting cryptographic functions) and a laser band (featuring an embedded hologram). It contains personal (e.g. name, surname, date of birth,...) and biometric data (photo and fingerprint) of a citizen
Homochiral oxazolidin-2-ones and imidazolidin-2-ones by tandem nucleophilic addition-conjugate addition
No full textTreatment of both primary alcohols 1a,b and secondary amines 1c,d, tethered to a Michael acceptor with (R)-phenylethyl isocyanate in the presence of DBU gave in good yield and high stereoselection diastereomeric mixtures of oxazolidin-2-ones 2a,b and 3a.b and imidazolidin-2-ones 2c,d and 3c,d, respectively. The cyclisation reaction Was Studied computationally by ab initio quantum mechanical methods. The observed stereoselectivity was explained on the basis of the different stability of both anions and transition states leading to 2a and 3a, respectively. The usefulness of the method was proven by conversion of 2a into the enantiomerically Pure bioactive amino acid
Synthesis of unsaturated β-amino acid derivatives from carbamates of the Baylis-Hillman products
No full textThe Italian electronic identity card: Overall architecture and IT infrastructure
No full textIn this paper we describe the overall process of deployment of the Italian Electronic Identity Card: the way it is issued, services it is used for, organizations involved in the process, and the Information Technology (IT) infrastructure enabling the effective management of the whole process while ensuring the mandatory security functions. Organizational complexity lies in the distribution of responsibilities for the management of Personal Data Registries (on which identity of people is based) which is an institutional duty of the more than 9000 Italian municipalities, and the need of keeping a centralized control on all processes dealing with identity of people as prescribed by laws and for national security and police purposes. Technical complexity stems from the need of efficiently supporting this distribution of responsibilities while ensuring. at the same time. interoperability of IT-based systems independent of technical choices of the organizations involved, and fulfilment of privacy constraints. The IT architecture defined for this purpose features a clear separation between security services, provided at an infrastructure level, and application services, exposed oil the Internet as Web Services. This approach has allowed to easily design and implement secure interoperability, since - notwithstanding the huge variety of IT solutions deployed all over the Italian Municipalities to manage Personal Data Registries - existing application services have not required major changes to be able to interoperate
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
Stereoselective synthesis of trans-4,5-disubstituted oxazolidin-2-ones by intramolecular conjugate addition
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
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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