121,991 research outputs found
BEYOND HBIM: SERIOUS GAMES AND PROCEDURAL MODELLING FOR HERITAGE DISSEMINATION
No full textIn the study of built heritage, the potential offered by the BIM methodology finds effective application in the knowledge and dissemination process. Today, the HBIM methodology often develops from 3D scanning point clouds with the so-called Scan-to-BIM processes. The complexity that often characterizes the architectural elements of the historical heritage and the lack of information on construction details and geometries, constitute a critical factor that sometimes affects the effectiveness of the application of the BIM methodology. Procedural methods define an approach that can help us when it is necessary to use external modelling tools for the local modelling of complex elements. Algorithmic modelling potentially could significantly reduce the investment normally required in digital content modelling operations, also in terms of time consuming. Furthermore, in procedural modelling, the definition of the detail can be calibrated a priori according to the objectives of the workflow. The research addresses the difficult management of point clouds in workflows aimed at the realization of the so-called serious games, tools that have proved invaluable in educational and teaching processes, as well as in the dissemination and promotion of heritage. Involving a remarkable variety of digital instruments for representation, serious games define a research topic in which the different needs related to the representation of the complexity of the objects can be investigated. Aimed at defining an effective development process for serious games, the paper proposes an HBIM workflow for reconstruction of 3D environments of historic buildings starting from laser scanning surveying approach
Analisi della prassi e della giurisprudenza a due anni dall’approvazione del Codice dei Contratti
No full textExperimental evidence of domain wall tilting in periodically poled lithium niobate crystals grown by the Czochralski off-center technique
No full textPeriodically poled lithium niobate crystals are expected to have ferroelectric domain boundaries parallel to the direction of the spontaneous polarization. The authors report, however, that this is not the case for periodic structures grown by the off-center Czochralski technique. By exploiting the high resolution x-ray diffraction technique in reciprocal space mapping mode, the authors demonstrate that the angle between the domain border and the spontaneous polarization directions is different from zero, reaching a value as high as 5°
Table ronde : Sport de haut niveau et maternité
No full textArron Christine, Argiolas Cécile, Legrand Lise, Debois Nadine. Table ronde : Sport de haut niveau et maternité. In: Les Cahiers de l'INSEP, n°40, 2008. Sport de haut niveau au féminin. Tome 3. Entretiens de l'INSEP 11, 12, 13 décembre 2007. pp. 191-207
Modeling Trust Relationships in Collaborative Engineering Projects
No full textEngineering projects may involve the efforts of specific partners experts in various disciplines. Grid and Web service technologies enable engineering project teams to perform resource discovery, selection, negotiation, and composition in a networked environment. However, the need arises for trust relationships, allowing team entities to participate in the project under security guarantees of privacy, of authorized disclosure of project data, and of correct users’ credential management. This paper proposes a Web service based framework to support this process. Giving prominence to the needs of a secure and dynamic collaboration in the style of a Virtual Organization (VO), the paper identifies and models the trust aspects featuring actors and objects involved in engineering team collaborations. An architecture is illustrated, centered around a Security Manager component supporting security in the composition and execution of distributed engineering services. A prototype implementation is presented
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