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홍승철(SeungChul Hong) 대한신경정신의학회 2020 신경정신의학 Vol.59 No.1
Narcolepsy is a chronic neurological sleep disorder caused by hypocretin neuron loss, resulting in excessive daytime sleepiness, disturbed nocturnal sleep, and intrusions of aspects of rapid eye movement sleep in wakefulness, such as cataplexy, sleep paralysis, and hypnopompic/hypnagogic hallucinations. Narcolepsy disrupts the maintenance and orderly occurrence of the wake and sleep stages. Cataplexy is a highly specific symptom of narcolepsy, but many other symptoms can be observed in a variety of sleep disorders. The diagnosis of narcolepsy type 1 requires a history of excessive daytime sleepiness and one of the following : 1) a low cerebrospinal fluid hypocretin-1 level or 2) cataplexy and a positive multiple sleep latency test result. The diagnosis of narcolepsy type 2 requires a history of excessive daytime sleepiness and a positive mean sleep-latency test result. The mean sleep-latency test must be preceded by nighttime polysomnography to exclude other sleep disorders and to document adequate sleep. The mean sleep-latency test result can be falsely positive in other sleep disorders, such as shift work, sleep apnea, or sleep deprivation, and it is influenced by age, sex, and puberty. Modafinil and armodafinil can reduce the excessive daytime sleepiness without many of the side effects associated with older stimulants. Although there is no cure for narcolepsy, the treatments are often effective and include both behavioral and pharmacologic approaches.
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배터리/슈퍼커패시터 하이브리드 ESU의 상온 및 저온에서의 성능 평가 및 제어 전략 개발
이가은(Gaeun Lee),고성연(Sungyeon Ko),홍승철(Seungchul Hong),안균영(Kyunyoung Ahn),남재도(Jaedo Nam),김현수(Hyunsoo Kim) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
In this study, the performance verification of an electric vehicle (EV) with a battery/supercapacitor hybrid energy storage unit (ESU) in room and low temperature was conducted, and a control strategy for the hybrid ESU was proposed. For the battery/supercapacitor hybrid ESU, a control strategy was proposed, which controls the battery power when the battery power demand was greater than the battery power limit, and the insufficient or extra power was managed in the supercapacitor. For the performance verification, simulation was conducted for various temperatures and number of supercapacitors.
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