514 search results - page 59 / 103 » Comparison of Face-To-Face and Distributed Presentations |
147
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AIED
2009
Springer
15 years 11 months ago
2009
Springer
We present in this paper an approach to assessing student paraphrases in the intelligent tutoring system iSTART. The approach is based on measuring the semantic similarity between ...
128
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EDOC
2007
IEEE
15 years 10 months ago
2007
IEEE
Models have been used in various engineering fields to help managing complexity and represent information in difbstraction levels, according to specific notations and stakeholde...
134
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GLOBECOM
2007
IEEE
15 years 10 months ago
2007
IEEE
—In this paper, we present an analytical model to evaluate the hidden station effect on the access delay of the IEEE 802.11 Distributed Coordination Function (DCF) in both non-sa...
137
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LCN
2007
IEEE
15 years 10 months ago
2007
IEEE
— Placing multicast proxies on the Internet can largely reduce the delivery delay of Internet live media streaming using overlay multicast mechanisms. In this paper, we propose a...
128
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VTC
2007
IEEE
15 years 10 months ago
2007
IEEE
—This paper presents an opportunistic feedback (OF) protocol that achieves the asymptotic sum-capacity of the fading broadcast channel (BC) with a limited amount of feedback. The...