A questionnaire survey was carried out to examine the sleep habits and excessive daytime sleepiness (EDS) of 3871 high school students with a mean age of 16.8 years in Korea. The results showed that mean total sleep time was 6.3 h/day for male students and 6.5 h/day for female students, which may be insufficient for adolescence during puberty. The overall prevalence of EDS (defined as an Epworth sleepiness scale score of > 10) was 15.9% (14.9% for boys and 18.2% for girls). The prevalence of EDS increased significantly ( P < 0.001) with a decline in school performance.

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Abstract. Mobile Ad hoc Networks (MANETs) are very attractive for many applications. However, media streaming over MANET is quite challenging task. In this paper, we depict a framework for audio streaming over multihop wireless network. And we propose multipath routing for MANET and investigated media streaming using different scalable speech coding techniques. With the simulation results, performance of such a framework is evaluated.

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