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- Universidade Federal Rural de PernambucoBR29 papers
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11 papers · 1 filter
Nonvolatile optical memory via recoil-induced resonance in a pure two-level system
A. J. F. de Almeida, M. -A. Maynard, C. Banerjee +3
We report on the storage of light via the phenomenon of recoil-induced resonance in a pure two- level system of cold cesium atoms. We use a strong coupling beam and a weak probe be…
Low-complexity Pruned 8-point DCT Approximations for Image Encoding
V. A. Coutinho, R. J. Cintra, F. M. Bayer +2
Two multiplierless pruned 8-point discrete cosine transform (DCT) approximation are presented. Both transforms present lower arithmetic complexity than state-of-the-art methods. Th…
The Innovative Behaviour of Software Engineers: Findings from a Pilot Case Study
Cleviton Monteiro, Fabio Queda Bueno da Silva, Luiz Fernando Capretz
Context: In the workplace, some individuals engage in the voluntary and intentional generation, promotion, and realization of new ideas for the benefit of individual performance, g…
Energy-efficient 8-point DCT Approximations: Theory and Hardware Architectures
R. J. Cintra, F. M. Bayer, V. A. Coutinho +2
Due to its remarkable energy compaction properties, the discrete cosine transform (DCT) is employed in a multitude of compression standards, such as JPEG and H.265/HEVC. Several lo…
A Pilot Case Study on Innovative Behaviour: Lessons Learned and Directions for Future Work
Cleviton Monteiro, Fabio Queda Bueno da Silva, Luiz Fernando Capretz
Context: A case study is a powerful research strategy for investigating complex social-technical and managerial phenomena in real life settings. However, when the phenomenon has no…
Chiral Closed strings: Four massless states scattering amplitude
Marcelo M. Leite, Warren Siegel
We compute the scattering amplitudes of four massless states for chiral (closed) bosonic and type II superstrings using the Kawai-Lewellen-Tye () factorization method. The amp…