• 한국컴퓨터정보학회:학술대회논문집
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• 한국컴퓨터정보학회 2010년도 제42차 하계학술발표논문집 18권2호
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• pp.129-132
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• 2010

작금의 현대 사회 사람들은 바쁜 일상생활로 인해 짧아진 수면과 불면증 등의 각종 수면장애를 겪고 있으며, 여러 가지의 요소로 인하여 수면의 방해를 받게 되면, 여러 질병 및 생활 장애를 겪을 수 있어 수면의 중요성은 날로 주목받고 있다. 본 논문에서는 수면을 이루는 침실의 수면 환경 데이터를 수집하여 얻어진 조건 데이터들과 수면간의 관계를 분석하고 이를 바탕으로 시뮬레이션 모델을 추출하여 개개인에 따른 최적의 환경을 제공할 수 있다. 따라서 수면 과정에 따라 신체의 감각 및 자극에 대한 반응을 알고, 사람의 신체 상황에 따른 차이점 및 안정적인 패턴 및 조건을 정의하며 수면 패턴을 분석 및 솔루션 제공을 할 수 있다. 또한 차후에는 수면의 특정 상황만 아니라 식사, 출근, 등과 같은 유기적인 생활(유비쿼터스 환경)의 한 부분에도 상황에 따른 적절한 실내 환경 변화를 제공해주어서 좀 더 쾌적한 일상생활을 영위할 수 있도록 도움을 주게 되는 측면으로 확대 하려한다.

• 전자공학회논문지
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• 제49권12호
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• pp.45-55
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• 2012

센서 네트워크는 센서가 설치된 지역에서 감지된 데이터를 무선으로 전달하는 기술로서, 기존 방식과 달리 에너지 효율이 매우 중요한 성능요소이다. 이러한 특성에 따라 많은 WSN MAC 프로토콜에서는 Wakeup과 Sleep을 반복하여 수행하는 Duty Cycle 기법을 활용하고 있지만, 고정적인 Wakeup 구간의 설정에 따라 획일화된 에너지 성능과 수신 성공률로 인하여 성능이 제한적이다. 본 논문에서는 이러한 Duty Cycle 기반의 MAC 프로토콜을 개선하기 위하여, 채널 환경에 따라 동적으로 Wakeup 구간을 가변화시키는 기법을 제안한다. 제안하는 방식은 트래픽이 높은 환경에서 Wakeup 구간을 증가시켜 수신 성공률을 높이고, 트래픽이 낮은 환경에서 Wakeup 구간을 줄여 에너지 성능을 향상시켰다. 또한 본 논문에서는 제안하는 방식의 성능에 대한 효율적인 평가를 위하여 기존 동기식 및 비동기식 MAC의 결과와 제안방식을 적용한 MAC의 결과를 비교하고 이를 분석하였다.

• BMB Reports
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• 제56권4호
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• pp.209-215
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• 2023

Maintaining internal homeostasis and regulating innate behaviors are essential for animal survival. In various animal species, a highly conserved neuroendocrine system integrates sensory inputs and regulates physiological responses to environmental and internal changes. Diuretic hormones 44 and 31, which are homologs of mammalian corticotropin-releasing factor (CRF) and calcitonin gene-related peptide (CGRP), respectively, control body fluid secretion in Drosophila. These neuropeptides and their receptors have multiple physiological roles, including the regulation of body-fluid secretion, sleep:wake cycle, internal nutrient-sensing, and CO₂-dependent response. This review discusses the physiological and behavioral roles of DH44 and DH31 signaling pathways, consisting of neuroendocrine cells that secrete DH44 or DH31 peptides and their receptor-expressing organs. Further research is needed to understand the regulatory mechanisms of the behavioral processes mediated by these neuroendocrine systems.

• 수면정신생리
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• 제1권2호
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• pp.188-192
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• 1994

The author reports a 32 years old female patient with late luteal phase dysphoric disorder who received evening bright light treatment for 7 consecutive days during the late luteal phase of menstrual cycle. After the treatment, beneficial clinical effects were observed. This result suggests that bright light can be an alternative treatment for LLPDD. However, the placebo effects should be ruled out completely. Further controlled studies with more patients will be needed.

• Biomolecules & Therapeutics
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• 제26권3호
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• pp.268-273
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• 2018

Sleep is the most basic and essential physiological requirement for mental health, and sleep disorders pose potential risks of metabolic and neurodegenerative diseases. Tryptic hydrolysate of ${\alpha}_{S1}$-casein (${\alpha}_{S1}-CH$) has been shown to possess stress relieving and sleep promoting effects. However, the differential effects of ${\alpha}_{S1}-CH$ on electroencephalographic wave patterns and its effects on the protein levels of ${\gamma}$-aminobutyric acid A ($GABA_A$) receptor subtypes in hypothalamic neurons are not well understood. We found ${\alpha}_{S1}-CH$ (120, 240 mg/kg) increased sleep duration in mice and reduced sleep-wake cycle numbers in rats. While ${\alpha}_{S1}-CH$ (300 mg/kg) increased total sleeping time in rats, it significantly decreased wakefulness. In addition, electroencephalographic theta (${\theta}$) power densities were increased whereas alpha (${\alpha}$) power densities were decreased by ${\alpha}_{S1}-CH$ (300 mg/kg) during sleep-wake cycles. Furthermore, protein expressions of $GABA_A$ receptor ${\beta}_1$ subtypes were elevated in rat hypothalamus by ${\alpha}_{S1}-CH$. These results suggest ${\alpha}_{S1}-CH$, through $GABA_A$ receptor modulation, might be useful for treating sleep disorders.

• 한국동물학회:학술대회논문집
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• 한국동물학회 1999년도 공동 춘계학술대회
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• pp.66.2-66
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• 1999

No Abstract, See Full Text

• 한국동물학회:학술대회논문집
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• 한국동물학회 1999년도 한국생물과학협회 학술발표대회
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• pp.195.2-195
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• 1999

No Abstract, See Full Text

• 대한한방소아과학회지
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• 제30권1호
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• pp.1-8
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• 2016

Objectives The purpose of this study is to report the case of nocturnal enuresis in two children treated by using hypothesis that awareness during sleep may improves symptoms. Methods Enuresis children usually are not even aware of nocturnal urea due to excessive sleep. During the sleep cycle, enuresis children do not tend to have sleep-wake transition period compared to normal children. Ephedrine, the main ingredient of Ephedra sinica (麻黃), has a wakening effect. Two pediatric patients, who were suffering from nocturnal enuresis, were administered by Tosatang-gamibang (菟絲湯加味方) added Ephedra sinica (麻黃) or Boatang-gamibang (補兒湯加味方) added Ephedra sinica (麻黃) while correcting unhealthy voiding habit. Results As a result of the treatment, two pediatric patients were recovered without relapse. Conclusions In this report, we have proven that Tosatang-gamibang (菟絲湯加味方) added Ephedra sinica (麻黃) or Boatang-gamibang (補兒湯加味方) added Ephedra sinica (麻黃) and correcting voiding habit can considerably be effective in recovering nocturnal enuresis.

• 대한간호학회지
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• 제34권7호
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• pp.1326-1333
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• 2004

Purpose: The purpose of this study was to determine the changes on Index of Nausea, Vomiting, & Retching (INVR) during a cycle of chemotherapy, Methods: Forty-three patients hospitalized for chemotherapy at C University Hospital during a period of 5 days from March to May, 2003 were examined, Scores of INVR were measured once a day, Anxiety, anorexia, fatigue, and sleep satisfaction were measured before chemotherapy, Data was analyzed by repeated measures of ANOVA, Results: The score of INVR increased over time during the days of hospitalization and showed a peak on the third day, The score was significantly higher on the third and consecutive cycles than on the first and second cycle, The score was significantly higher in patients in their forties and fifties rather than in their sixties, The score was higher in women than in men, and also increased as the sleep satisfaction decreased, Conclusion: These results suggested that specific interventions for relief of nausea & vomiting were needed in middle age, women, the third chemotherapy cycle, and the third day after chemotherapy.

• 수면정신생리
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• 제27권1호
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• pp.1-7
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• 2020

Mobile digital devices are very familiar and useful devices in the daily life of modern people, and are used for various tasks such as communication, reading, writing, and playing media. As the use of mobile digital devices has become more prevalent, user time has also been increasing. In particular, the number of people who use digital devices before sleep is growing. The light pollution associated with these devices is classified into four categories: urban sky glow, glare, light trespass, and clutter. The pattern in which modern people use digital devices corresponds to light pollution caused by light trespass and clutter from light exposure to artificial light at night. The light pollution caused by digital devices can cause melatonin secretion suppression, delayed sleep onset, reduction of sleepiness before bedtime, and periodic rhythm and cognitive function disturbances. In addition, a study of children and adolescents showed there may be disturbances in the sleep-wake cycle and circadian rhythm, deterioration of sleep quality, and daytime fatigue due to light pollution caused by artificial light at night from mobile digital devices. A multi-faceted research effort is also necessary to investigate the healthy use of mobile digital devices based on research evidence and insights with an accurate evaluation of the influence of mobile digital devices as a form of light pollution.