1,720,988 research outputs found
Advanced semantic search and retrieval in a collaborative peer-to-peer system
No full textSemantic search, one of the ideas underpinning the Semantic Web vision, is receiving attention from the scientific community since it can significantly improve keyword-based search. In this paper we present the SECCO ontology mapping algorithm that enables distributed semantic search of Knowledge Objects (e.g., textual documents, emails) within Peer to Peer networks. We discuss the ontological framework which SECCO is founded on and how the algorithm is implemented in a semantic Peer to Peer framework, named K-link+. The ontological framework along with the SECCO algorithm allow K-link+ to: (i) exploit ontologies for knowledge representation; (ii) annotate KOs to ontology concepts; (iii) retrieve and rank KOs; (iv) create collaborative communities of peers called semantic workspaces. Experimental results show the effectiveness of the proposed approach. Copyright 2008 ACM
K-link: A peer-to-peer solution for organizational knowledge management
No full textIn the latest years knowledge management received more and more attention as a source of competitive advantage for enterprises and organizations, therefore becomes important to understand how computer science solutions should be designed to efficiently manage knowledge. Most of the current knowledge management systems use technological architectures that are in contradiction with the social processes concerning the creation of new knowledge, slowing down organizational innovation. Actually, most of those systems use centralized architectures filtering knowledge from any form of personal and contextual interpretation. Recently a new paradigm supporting cooperative and dynamic aspects of knowledge management (KM) has been proposed: Distributed Knowledge Management (DKM). In particular, peer to peer (P2P) architectures seem to naturally fulfil the requirements of this new model. Nevertheless, current P2P architectures suffer from heavy limitations due to the lack of semantic supports for handling knowledge. To overcome these limitations, the scientific community is appraising the possibility of using ontologies as a semantic support in KM processes. This paper presents an ontology based P2P system for DKM named K-link. The system design and its implementation are described. Moreover an ad hoc ontology framework for supporting organizational KM is also presented. © 2008 Springer-Verlag Berlin Heidelberg
I danni risarcibili
No full textIl contributo, dopo avere ripercorso le principali tappe della tormentata vicenda del danno non patrimoniale per lesione dei diritti della persona, si occupa delle più recenti evoluzioni e degli ultimi approdi in materia di pregiudizi risarcibili in conseguenza di malpractice medica. In tale ottica viene censita la portata innovativa delle sentenze della Cassazione del c.d. "San Martino 2019" (corposo intervento costituito da dieci decisioni su temi nevralgici della responsabilità sanitaria) anche con riguardo alla riaffermata autonomia ontologica del danno morale ed ai criteri cui ricorrere per la sua quantificazione. Inoltre, sono affrontate le più rilevanti questioni attinenti al risarcimento del danno ai congiunti, sia come prèjudice d'affection sia come danno iure hereditario (in quest'ultimo ambìto rientrano il danno biologico terminale e il danno catastrofale, mentre assai problematica resta la figura del c.d. danno tanatologico, vale a dire la risarcibilità della perdita, in sé, della vita); quelle relative al danno da perdita di chance e per lesione dell'autodeterminazione terapeutica; inoltre le molteplici ipotesi di danno da procreazione e da nascita indesiderata (wrongful birth e wrongful pregnancy). In questo contesto si innesta anche il problema dell'esistenza di un diritto a non nascere (se non sani), il quale incontra numerosi ostacoli sul piano della ricostruzione dogmatica, vuoi sotto il profilo della ingiustizia del danno vuoi quanto a quello della causalità giuridica
Removal of orbital degeneracy of the atomic P state for matrix isolated metal atoms
No full textA theoretical study is made of the matrix effects on the absorption spectra of the noble metal atoms Cu, Ag, and Au isolated in Ar, Kr, and Xe matrices. The matrix influence which is discussed in terms of level shifts and additional crystal field splittings is calculated by a nonlocal pseudopotential method. In order to get a threefold splitting of the P level, we assume an axial symmetry for the metal atom site which is caused by a distorted neighborhood in a fcc matrix. This is the first theoretical investigation of the matrix cage distortion around the impurity. The results show that only small variations of the nearest neighbor distances between isolated atoms and matrix atoms are necessary to account for the observed matrix perturbations
Le controversie in materia di responsabilità medica, tra ADR e processo
No full textIl saggio esamina i due “filtri” di procedibilità (accertamento tecnico preventivo con funzione conciliativa ex art. 696-bis cpc e procedimento di mediazione ex d.lgs 28/2010, quest'ultimo modificato dal d.lgs. 149/2022) da esperire in via alternativa su scelta dell’attore, previsti dalla l. 24/2017 per le controversie relative al risarcimento del danno prodotto da medical malpractice. Si occupa, altresì, dell’incidenza sulla distribuzione dell’onere della prova delle modifiche, introdotte dalla l. 24/2017, attinenti alla qualificazione del titolo di responsabilità della struttura sanitaria e dell’esercente la professione sanitaria
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
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