São José dos Campos, Brazil
São José dos Campos, Brazil

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Philipp F.,TU Darmstadt | Klytta C.,TU Darmstadt | Glesner M.,TU Darmstadt | Dutra E.,IEAv Institute for Advanced Studies
ReCoSoC 2012 - 7th International Workshop on Reconfigurable and Communication-Centric Systems-on-Chip, Proceedings | Year: 2012

Encryption and channel coding are both essential steps for reliable, robust and secure operation within wireless networks. Usually, these algorithms are considered independently of each other because of their antagonism, but solutions exist to combine their features into a single simple primitive. This fusion aims to improve the performance and the energy-efficiency of the wireless device while contributing to the dependability of the whole system. The introduction of a dedicated core implemented on field-programmable logic tightly coupled to the central controller of a wireless sensor node demonstrates further benefits for the energy-efficiency of the system. © 2012 IEEE.


Andrade R.M.,IEAv Institute for Advanced Studies | Shiguemori E.H.,Paulista University | De Castro A.P.A.,IEAv Institute for Advanced Studies
Computational Vision and Medical Image Processing, Proceedings of VipIMAGE 2011 - 3rd ECCOMAS Thematic Conference on Computational Vision and Medical Image Processing | Year: 2012

This work addresses the problem of movement identification from aerial video. Characteristic points information have been used to estimate of the aircraft displacement. The moving objects have been identified employing operations on video frames. The results show that the approach is indicated for the application, since it is desired real-time processing. © 2012 Taylor & Francis Group.


Rodrigues Neto A.M.,IEAv Institute for Advanced Studies | Shiguemori E.H.,IEAv Institute for Advanced Studies | De Castro A.P.A.,Paulista University
Computational Vision and Medical Image Processing, Proceedings of VipIMAGE 2011 - 3rd ECCOMAS Thematic Conference on Computational Vision and Medical Image Processing | Year: 2012

This work addresses the problem of movement identification from aerial video. Characteristic points information have been used to estimate of the aircraft displacement. The moving objects have been identified employing operations on video frames. The results show that the approach is indicated for the application, since it is desired automated vehicle identification. © 2012 Taylor & Francis Group.


Amaro De Faria A.C.,IEAv Institute for Advanced Studies
Solid-State and Organic Lighting, SOLED 2012 | Year: 2014

This work analyse the quantum aspects of Raman scattering on point of view of nondegenerate perturbation theory firstly. We will consider a perturbation on the Hamiltonian of the system with first and second order terms as a correction on the energy. © 2012 Optical Society of America.


Amaro De Faria A.C.,IEAv Institute for Advanced Studies
Solid-State and Organic Lighting, SOLED 2012 | Year: 2014

We want describe a method to find quantum fluctuations of solutions of the nonlinear Schrödinger equation (NLS). This method can be used to analyse the quantum effects of the light scattering on waveguides like optical fibers. © 2012 Optical Society of America.


Nassif C.,Federal University of Ouro Preto | Amaro De Faria A.C.,IEAv Institute for Advanced Studies
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

From an extended relativistic dynamics for a particle moving in a cosmic background field with temperature T, we aim to obtain the speed of light with an explicit dependence on the background temperature of the universe. Although finding the speed of light in the early universe much larger than its current value, our approach does not violate the postulate of special relativity. Moreover, it is shown that the high value of the speed of light in the early universe was drastically decreased before the beginning of the inflationary period. So we are led to conclude that the theory of varying speed of light should be questioned as a possible solution of the horizon problem. © 2012 American Physical Society.

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