Diogo Henriques

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Query specification for 3D object retrieval still relies on traditional interaction paradigms. The goal of our study was to identify the most natural methods to describe 3D objects, fo-cusing on verbal and gestural expressions. Our case study uses LEGO R blocks. We started by collecting a corpus involving ten pairs of subjects, in which one participant(More)
This paper proposes Zás, a novel, flexible, and expressive authorization mechanism for Java. Zás has been inspired by Ramnivas Laddad's proposal to modularize Java Authentication and Authorization Services (JAAS) using an Aspect-Oriented Programming (AOP) approach. Zás' aims are to be simultaneously very expressive , reusable, and easy to use and configure.(More)
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