Now showing items 1-10 of 531
Research in conceptual formation: the knowledge of secondary school students on polygons
(Investigacion En Educacion Matematica Xiii, 2009-01-01) [Trabalho apresentado em evento]
Frontal sinus recognition for human identification
(Proceedings of SPIE - The International Society for Optical Engineering, 2008-12-01) [Trabalho apresentado em evento]
Many methods based on biometrics such as fingerprint, face, iris, and retina have been proposed for person identification. However, for deceased individuals, such biometric measurements are not available. In such cases, ...
Measurement of phase and amplitude modulations in Sb-Based Films
(Proceedings of SPIE - The International Society for Optical Engineering, 2009-11-23) [Trabalho apresentado em evento]
In this work we studied the changes of the optical constants of films in the binary system Sb2O3-Sb2S3 induced by light in the VIS-UV. The measurements were performed before and after homogeneous irradiation of the films ...
An Intelligent System for Petroleum Well Drilling Cutting Analysis
(Proceedings 2009 International Conference on Adaptive and Intelligent Systems, Icais 2009, 2009-01-01) [Trabalho apresentado em evento]
Cutting analysis is a important and crucial task task to detect and prevent problems during the petroleum well drilling process. Several studies have been developed for drilling inspection, but none of them takes care about ...
A Management Tool for the Replication of Operating Systems in Wireless Communication Networks
(2011 35th IEEE Annual International Computer Software and Applications Conference (compsac), 2011-01-01) [Trabalho apresentado em evento]
To simplify computer management, various administration systems based on wired connections adopt advanced techniques to manage software configuration. Nevertheless, the strong relation between hardware and software makes ...
Design and Analysis of Optical Interconnection Networks for a Dataflow Parallel Computer
(Novel Algorithms and Techniques In Telecommunications, Automation and Industrial Electronics, 2008-01-01) [Trabalho apresentado em evento]
This work shows the design, simulation, and analysis of two optical interconnection networks for a Dataflow parallel computer architecture. To verify the optical interconnection network performance on the Dataflow architecture, ...
Utilizing the CORBA platform in the construction of a highly immersive virtual environment
(Proceedings of SPIE - The International Society for Optical Engineering, 1999-12-01) [Trabalho apresentado em evento]
This article presents the implementation of a distributed system of virtual reality, through the integration of services offered by the CORBA platform (Common Object Request Broker Architecture) and by the environment of ...
Analysis of numeric conditioning of Hessian matrix of Lagrangian via singular values
(2007 IEEE Lausanne POWERTECH, Proceedings, 2007-12-01) [Trabalho apresentado em evento]
This paper presents an analyze of numeric conditioning of the Hessian matrix of Lagrangian of modified barrier function Lagrangian method (MBFL) and primal-dual logarithmic barrier method (PDLB), which are obtained in the ...
Optimal power flow via interior-exterior method
(2007 IEEE Power Engineering Society General Meeting, PES, 2007-12-01) [Trabalho apresentado em evento]
This paper presents a new approach to the resolution of the Optimal Power Flow problem. In this approach the inequality constraints are treated by the Modified Barrier and Primal-Dual Logarithmic Barrier methods. The ...
The generation of scenes in mixed reality environments using the chromakey technique
(Proceedings 17th International Conference on Artificial Reality and Telexistence, ICAT 2007, 2007-12-01) [Trabalho apresentado em evento]
A classic problem in the development of Mixed Reality systems is the registration. The correct alignment between virtual objects and the real elements is extremely important for the coherent composition of the resultant ...