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We aimed to investigate how reading a book on a tablet computer affects sleep by measuring cerebral blood flow in the prefrontal cortex. Seven students (7 men, age: 21–32 years) participated in this study. Under a controlled illuminance environment, the subjects read a novel in printed form or on a tablet computer from any distance. As the subjects were reading, the cerebral blood flow in their prefrontal...
In this paper, the spread-spectrum binary countdown scheme with generalized modified prime sequence codes (GMPSC) is considered as the MAC protocol in the multi-hop network. We focus on the code division multiple access (CDMA) based relay network using binary countdown scheme with GMPSC. The packet success rate and the throughput of binary countdown scheme with GMPSC are evaluated by taking into account...
The binary countdown scheme has been investigated as the MAC protocol in the multi-hop network. However, since the conventional binary countdown scheme has the hidden terminal problem, the packet success rate and the throughput are low. In this paper, in order to solve these problems, a novel binary countdown scheme which combines the relaying system with the spread spectrum communication system is...
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