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Thehapticrenderingofsurfacemesostructure(finerelieffeatures)indensetrianglemeshesrequires special structures, equipment, and high sampling rates for detailed perception of rugged models. Low cost approaches render haptic texture at the expense of fidelity of perception. We propose a faster method for sur- face haptic rendering using image-based Hybrid Rugosity Mesostructures (HRMs), paired maps with per-face heightfield displacements and normal maps, which are layered on top of a much decimated mesh, effectively adding greater surface detail than actually present in the geometry. The haptic probe’s force response algorithm is modulated using the blended HRM coat to render dense surface features at much lower costs. The proposed method solves typical problems at edge crossings, concave foldings and texture transitions. To prove the well- ness of the approach, a usability testbed framework was built to measure and compare experimental results of haptic rendering approaches in a common set of specially devised meshes, HRMs, and performance tests. Trial results of user testing evaluations show the goodness of the proposed HRM technique, rendering accurate 3D surface detail at high sampling rates, deriving useful modeling and perception thresholds for this technique.

Abstract. We characterize the feature superset of Collaborative Virtual Reality Environments (CVREs) out of existing implementations, and derive a novel component framework for transforming standalone VR tools into full-fledged multithreaded collaborative environments. The contributions of our approach rely on cost-effective techniques for loading graphics rendering, user interaction and network communications software components into separate threads, with a top thread for session collaboration. The framework recasts VR tools under a scalable peer-to-peer topology for scene sharing, callback hooks for event broadcasting and multicamera perspectives of avatar interaction. We validate the framework by applying it to our own ALICE VR Navigator. Experimental results show good performance of our approach in the collaborative inspection of complex models.

La interrelación entre trabajo, educación y seguridad societal es un objeto de estudio e investigación con novedad original, que es investigado bajo el enfoque heurístico del modelo emergente de cuádruple hélice para la innovación en el dominio del ciberespacio; teniendo como actores a la sociedad civil, a los pueblos con su poder creador, a las instituciones de educación universitaria, a los gobiernos o administraciones de los Estados-nación, y a  los sectores de la economía real y de la economía especulativa  globalizante. Este artículo es un reporte preliminar de investigación, que presenta el estado del arte del trabajo y la educación como procesos categoriales que, objetiva o subjetivamente, impactan a la seguridad societal, y tienen efectos en la seguridad de los Estados-nación y  la Paz internacional.

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