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203
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MEDES
2010
ACM
14 years 12 months ago
2010
ACM
This work presents a case of an innovative Brazilian experience of use of free software in public administration as an emergent ecosystem, and the attempt to establish a quality f...
51
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SIGSPATIAL
2010
14 years 11 months ago
2010
130
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TASLP
2010
14 years 11 months ago
2010
We consider the problem of extracting the source signals from an under-determined convolutive mixture assuming known mixing filters. State-of-the-art methods operate in the time-fr...
130
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TIT
2010
14 years 11 months ago
2010
Wideband analog signals push contemporary analog-to-digital conversion systems to their performance limits. In many applications, however, sampling at the Nyquist rate is inefficie...