• Journal of The Korean Society of Integrative Medicine
• /
• v.10 no.3
• /
• pp.185-198
• /
• 2022

Purpose : We conducted a study to propose comparing subjective sleeping states data that was collected through scientifically measuring by using smartwatch and surveys for seafarers. In addition, we conducted a study to provide sleep though analysis of the environmental factors that influence the sleep efficiency of seafarers. Methods : For scientific measurement of seafarers' sleeping states, we measured the sleep hours and sleep efficiency for at least 3 days by using the healthcare function of smartwatches which are wearable devices. As for subjective sleeping states, we collected data on sleep hours and satisfaction rates on the quality of sleep through a survey. Lastly, as for the environmental factors that affect the sleep efficiency which is measured by smartwatches such as physical environment, bedroom space, bedroom furniture, bedding, a survey by self-evaluation method was conducted. Results : There were significant differences in the scientific sleep hours measurement values for all seafarers and the average sleep hours in the subjective survey. There were significant differences in the scientific sleep efficiency measurements of all the seafarers and the sleep satisfaction of the subjective survey, and there was no correlation between the scientific sleep efficiency and the subjective sleep satisfaction of all the seafarers. Among the environmental factors affecting the sleep efficiency of the seafarers, humidity variable had the most influence, and vibration and illuminance variables were also shown to have a very significant effect. Conclusion : We propose the measuring method that can analyze the quantitative and qualitative sleep states of the seafarers by using small activity recorders. In addition, it is very important to control humidity, vibration, and illuminance among ship environmental factors, and comfort, noise and bedroom size should also be reflected.

• Natural Product Sciences
• /
• v.19 no.2
• /
• pp.179-185
• /
• 2013

Polygalae radix (PR) has traditionally been used as a sedative and anti-stress agent in oriental countries for a long time. PR which contains many ingredients is especially rich in saponins. This study was performed to investigate whether ethanol extract of PR enhances pentobarbital-induced sleep behaviors. In addition, possible mechanisms also were investigated. PR inhibited locomotor activity in mice. PR increased sleep rate and sleep time by concomitant administration with sub-hypnotic dose of pentobarbital (28 mg/kg). PR prolonged total sleeping time, and shortened sleep latency induced by pentobarbital (42 mg/kg). In addition, PR increased intracellular chloride concentration in primary cultured neuronal cells. The expression level of glutamic acid decarboxylase (GAD) were increased, and ${\gamma}$-aminobutyric acid $(GABA)_A$ receptors subunits were modulated by PR, especially increasing ${\gamma}$-subunit expression. In conclusion, PR augments penobarbital-induced sleep behaviors through activation of $GABA_A$ receptors and chloride channel complex.

• Journal of the Korean housing association
• /
• v.12 no.4
• /
• pp.43-52
• /
• 2001

The purpose of this study is to fined out the characteristics of using & change of the residential space according to the children age and family life cycle. The results of this study are as follows: The first, as children grow up, children's activity space changed from living room to the private room, and housing condition was related to the frequency of each activity. The second, as children grow up, family's sleeping pattern changed, and this change effected the number of private rooms for sleeping and the use of the extra room. The third, changes of the using of dwelling space come out several pattern, increasing bedroom number through reconstruction, exchange of An-band and children room, parents' sleeping space move to living room, and change the function of rooms. The change pattern of the correspondence to the housing needs differed from each family life cycle stage.

• Korean Institute of Interior Design Journal
• /
• no.38
• /
• pp.30-37
• /
• 2003

During the years of KwangHaeGun, an active public services of building large scale palaces such as reconstruction of ChangDukGung and ChangKyungGung and new construction of InKyungGung and KyungFukGung were carried out. And palaces of Chosun dynasty didn't go much different from those of KwangHaeGun years. By analyzing historical records, ancient maps, palace drawings, architectural forms of ChimJun(寢殿) in InKyungGung(仁慶宮) are examined. ChimJun is sleeping rooms of king and queen. The results are followings: Since Sejong dynasty, functions of king and queen were starting to differentiate, that during the years of KwangHaeGun, two Chimjun(寢殿) were made. ChungWaJun(靑瓦殿) is king's sleeping rooms, located in the west among two, and have a blue tiled roof. KyungSooJun(慶壽澱) is queen's sleeping rooms, located in the east among two. King's ChimJun built on stone pillars, and queen's ChimJun on a wide base as it called Waldae(月臺).

• Proceedings of the Korean Society for Emotion and Sensibility Conference
• /
• 2000.04a
• /
• pp.86-90
• /
• 2000

The effects of the timing of daily bathing on sleep in winter were studied. Eight healthy male subjects were assigned to three sleep conditions: bathing just before sleeping (Condition J), bathing 2 h before sleeping (Condition T0 and no bathing before sleeping (Control). We can found that slow wave sleep and REM sleep were increased, and sleep onset latency and wake after sleep onset were shortened in Condition T compared with Condition J. Rectal and mean skin temperatures n both bathing conditions were the same levels after the first half of sleep. Furthermore, subjective sleep sensation was the highest value in Condition T. These results suggest that bathing done before going to bed in winter was good for sleep; moreover, bathing 2 h before going to bed was more effective than bathing immediately before going to bed.

• Proceedings of the Korea Contents Association Conference
• /
• 2015.05a
• /
• pp.13-14
• /
• 2015

In the past few decades, many catastrophic natural disasters have occurred not only in Japan and Korea, but also in other countries in the world, forcing people to live in unfamiliar houses for middle or long range evacuation periods. Residents staying in temporary houses exhibit insomnia, resulting in severe fatigue. In order to investigate sleeping state of residents, measuring vital signals has been performed at examination room of a hospital. To avoid the restriction of residents' movement, we propose to use smartphone and/or wearable devices with various high performance sensors like measuring heart beat rate. We clarify the availability and usefulness of those devices as support for analyzing daily sleeping state of residents.

• Advances in Traditional Medicine
• /
• v.6 no.3
• /
• pp.208-214
• /
• 2006

In this study the Ayurvedic formulation Dasamularista was studied for its preliminary pharmacological properties using laboratory mice. Dasamularista showed a decrease in food intake and stool formation, while the water content of stool and water intake was higher and the volume of the urine was less. Dasamularista in a slight extent reduced the intestinal motility. This constipating effect was further supported by the significant anti-diarrhoeal property of the formulation in castor oil induced dairrhoea. The tested formulation markedly increased the latent period of diarrhoea and reduced the purging index value. Dasamularista did not alter the acetic acid induced abdominal writhing. Significant reduction on the onset of sleeping time and increased duration of sleep was observed in pentobarbital induced sleeping time test.

• Journal of the Korean Society of Industry Convergence
• /
• v.6 no.4
• /
• pp.405-412
• /
• 2003

Children of three-to-eighteen-years-old have been brought up in the institution (Orphanage) for several reasons such as family dissoultion, divorce and poverty since the Korean War of 1950. The Cottage, where these children are housed and brought up has dining room, living room and bedrooms. Psychological aspects of children are being observed distracted and differentiated to some degree according to the sizes of bedroom floor spaces ranging from 2.3 square meters to 9.0 square meters per child. Since the most facilities were built during the 1950-1960s period, most of the cottages are now in the condition of being rebuilt or remodelled. This study was conducted to obtain some basic data necessary for design of spaces in the orphanages by examining the relations between the meal and sleeping activities of children and residence types.

• Korean Journal of Veterinary Research
• /
• v.14 no.1
• /
• pp.41-44
• /
• 1974

The effect of Panax ginseng on the sleeping time of chicken anesthetized with pentobarbital sodium were observed to elucidate the influence of ginseng on the duration of action of barbiturates. The results were as follows: 1. By the oral administration of ginseng powder(0.1~0.6 g/day/head for a week) shortened the sleeping time of very young chicken anesthetized with pentobarbital sodium.

• Journal of the Korean Home Economics Association
• /
• v.30 no.1
• /
• pp.25-34
• /
• 1992

The main purpose of the study were to investigate the agreeability on the use of the bedclothes of Korea. For this purpose, a questionaire was sent to 600 mothers of students at middle school, high school and university in Seoul, Daejeon, Kwangju. The results were as follows; 1. The type of house greatly influences the style of sleeping and most families have a traditional Korean style sleeping environment. 2. Management of bedclothes were important on comfort sleeping of the subjects. 3. The type of sleepwear, Subjects shown a greater preference for Pajama style than One-piece style. 4. The chemi-physical aspect was shown as an important factor in the demand of selection motive of bedclothes for agreeability. 5. But Psychological aspect was shown an important factor in the demand of selection motive of sleepwear for agreeability.