3295 search results - page 541 / 659 » Using Technologies to Improve E-Learning |
143
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ICC
2009
IEEE
15 years 1 months ago
2009
IEEE
Abstract--By using cognitive radio technology, opportunistic spectrum access has the potential to solve the underused spectrum problem. In this paper, we employ class-based call ad...
173
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ET
2010
15 years 1 months ago
2010
Modern mixed-signal/RF circuits with a digital calibration capability could achieve significant performance improvement through calibration. However, the calibration process often ...
126
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IJWMC
2010
15 years 1 months ago
2010
The past few years have seen a burst in public interest and widespread use of portable electronic devices featuring both mature and emerging technologies for wireless communication...
178
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JSAC
2011
14 years 11 months ago
2011
Abstract—Cognitive radio (CR) technology enables the opportunistic use of the vacant licensed frequency bands, thereby improving the spectrum utilization. However, the CR operati...
159
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TVCG
2011
14 years 11 months ago
2011
—We present an application of interactive global illumination and spatially augmented reality to architectural daylight modeling that allows designers to explore alternative desi...