• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.23 no.1
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• pp.61-72
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• 2011

The influences of luminous environment on visual responses and fatigue sensation in art galleries were examined in this study. Field measurements and survey were performed in three galleries under various illuminance and luminous conditions. Result implies that vertical illuminance on art paintings needed to be somewhere between 200 lx and 300 lx to avoid visual discomfort. The vertical illuminance difference between consecutive paintings should not exceed 100 lx to keep visually comfortable environment. Visual comfort sensations were related to glare, visual stimulus, reflection from paintings, illuminance variation, and the sensation that subjects can clearly see the paintings. The sensation of fatigue was significantly influenced by the changes of luminous element that caused visual stimulus and discomfort. The sensation of eye fatigue among physical fatigue was primarily influenced by the glare, visual stimulus and comfort. The psychological fatigue was also influenced by eye fatigue, visual comfort, brightness and satisfaction with color of light.

• Journal of Information Display
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• v.10 no.4
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• pp.188-194
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• 2009

Conventional stereoscopic (3D) displays using binocular parallax generate unnatural conflicts between convergence and accommodation. These conflicts can affect the observer's ability to fuse binocular images and may cause visual fatigue. In this study, time series changes in visual fatigue and depth sensation when viewing stereoscopic images with changing parallax were examined. In particular, the physiological changes, including the subjective symptoms of visual fatigue, when viewing five parallax conditions, were examined. Then a comparative analysis of the 2D and 3D conditions was performed based on the visual function. To obtain data regarding the visual function, the time series changes in the spontaneous-blinking rate before and during the viewing of 3D images were measured. The time series change results suggest that 2D and 3D images cause significantly different types of visual fatigue over the range of binocular disparity.

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1099-1102
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• 2009

Conventional stereoscopic (3D) displays using binocular parallax generate unnatural conflicts between convergence and accommodation. Those conflicts can affect the ability to fuse binocular images and may cause visual fatigue. This study examined time-series changes in visual fatigue and depth sensation while viewing stereoscopic images with changing parallax. We examined the physiological changes, including the subjective symptoms of visual fatigue, when viewing five parallax conditions. The time-series results suggest that 2D and 3D images produce significantly different types of visual fatigue over the range of binocular disparity.

• Journal of the Korean Home Economics Association
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• v.38 no.3
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• pp.149-161
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• 2000

The purpose of the study was to examine the effect of Tencel fabrics on physiological reactions of a human body and thermal comfort under the hot environment. The 3 females subjects in their twenties were selected and a wear sensation test of the subjects was performed with four experimental ensembles made of cotton and Tencel fabrics for the study in the hot environment(3$0^{\circ}C$, 70%RH). The resets of the test were summarized as follows: For the mean skin temperature, Tencel garments showed about 0.2$^{\circ}C$-0.4$^{\circ}C$ lower than that of the cotton garment. The temperature of the rectal was 0.2$^{\circ}C$-0.4$^{\circ}C$ lower for Tencel garments than that for the colon garment. In the form of ensembles, the order of rectal temperature of the subjects for both Tencel and cotton ensembles was 1>IV>III>II. In the body weight loss according to garment materials, Tencel had a lower and more uniform than the cotton Thus, it could concluded that if the perspiration took into account, garments made of Tencel can be more ideal than that of the cotton. The heart rate and oxygen consumption appeared to be proportional to each other. For the heart rate, ensemble TI and TII of Tencel were much lower than ensemble CI and CII. For whole enembles except for TIV, Tencel ensembles showed relatively better thermal sensation and comfort sensation than the cotton ensembles. In the fatigue sensation, the reactions of the subjects were “slightly fatigue” and “fatigue” for the cotton, but “neutral” and “slightly fatigue” for Tencel.

• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 2008.10a
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• pp.118-121
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• 2008

The purpose of this study was to evaluate the wearing sensation of T-shirts made with silver combination yarns. The four different single jersey fabrics were knitted to make long sleeve T-shirts: cotton(C), cotton/silver(CS), polyester(P), and polyester/silver(PS). The four kinds of T-shirts were evaluated by six healthy male subjects in a climatic chamber($25^{\circ}C$, 65%RH, 0.5m/sec). The results were as follows. Thermal and fatigue sensation of wearing CS was best. It was found that overall subjective sensation was improved by using silver yarn with cotton for health knitwear.

• PNF and Movement
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• v.5 no.1
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• pp.19-28
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• 2007

Proprioception means the ability to perceive the sensation of position and movement of body. As it is transmitted to central nervous system and used in feed-back or feed-forward motor control, proprioception allows us to keep our normal movement and normal balance activity. However, the conditions such as injury, disease, aging and fatigue can damage the proprioceptiive sensation of position, movement and lead to a functional impairment and additional damages in musculoskeletal system, because they alter the amount of proprioceptive ability that transfer into the central nervous system. The purpose of this study was to identify the definition and the function of proprioception, to look into variations in injury, disease, aging and fatigue that can be easily met in clinical application and eventually to provide valuable aid for assessment and treatment.

• Journal of the Korean Society of Clothing and Textiles
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• v.27 no.11
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• pp.1291-1299
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• 2003

In order to design the better brassiere in terms of appearance and functions, various parameters of the materials should be considered; in this study, fatigue properties and subjective sensation of wing materials and its relation to the preference for a brassiere was investigated. After the survey of commercially available products, five elastic fabrics such as cotton, Modal, polyester, nylon, and Tactel, all of which contain 10% polyurethane, were chosen as specimens. Fabric growth were determined to evaluate fatigue properties. Qmax was determined to evaluate the warm-cool feeling. For the sensory test, semantic differential scale which contains 15 adjectives were developed. Fatigue properties were very similar at the 20% elongation irrespective of the duration of tension, but at 40% and 100% elongation, man made fabric showed less growth than cellulose fabrics. The factor analysis showed four factors such as sense of warmth, smoothness, weight and elasticity. Preference of the specimens was ranked in the order of Tactel>Modal>cotton>nylon>polyester.

• The Journal of Internal Korean Medicine
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• v.26 no.1
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• pp.236-243
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• 2005

Objective : This study was designed to evaluate the effects of oriental medicine therapy on a hyperthyroid patient. Methods : The clinical data was analyzed on a patient with hyperthyroidism whose main symptoms were burning sensation, sweaty hands, fatigue, and palpitation etc. The patient was admitted from November 16, 2003 and remained until December 6, 2003. She was treated with herbal medicine, acupuncture and moxa therapy. Results : After treatment, improvement was seen in burning sensation, sweaty hands, fatigue and palpitation etc. Conclusion: The study suggests that oriental medicine therapy is effective on the treatment of hyperthyroidism.

• The Journal of Korean Obstetrics and Gynecology
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• v.18 no.4
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• pp.203-210
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• 2005

Purpose : The keeping warm and avoidance of cold are one of important Korean traditional postpartum care, but sometimes overwarm for example over-bundling, an overheated room or a steam bath cause heavy sweats. I observed and treated three　patients complained of heavy sweats, chills, fatigue, malaise, cold sensation and pain caused by keeping overwarm for postpartum care. Although the symptoms have aggravated, they have maintained keeping overwarm because of a belief of Korean traditional postpartum care. The purpose of these cases studies are to report postpartum hyperhidrosis caused by keeping overwarm and to make a point of keeping the appropriate room temperature and humidity during puerperium. Methods : I observed and treated three patients complained of heavy sweats, chills, fatigue, malaise, cold sensation and pain caused by keeping overwarm for postpartum care. I found that a cause of the symptoms was hyperhidrosis by keeping overwarm, and administered herbal medicine and was to keep the appropriate room temperature. Results : After medication of Herbal medicine(補中益氣湯加味方) and keeping the appropriate room temperature, they were improved. Conclusion : Postpartum care is not to keep overwarm but to keep the appropriate room temperature and humidity.

• Journal of Korean Academy of Nursing
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• v.34 no.8
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• pp.1395-1401
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• 2004

Purpose. To compare perimenstrual (premenstrual, menstrual, postmenstrual) symptoms by concurrent reporting using the Women's Daily Health Diary (WDHD) and by retrospective reporting using the Moos Menstrual Distress Questionnaire (MMDQ). Methods. A prospective and retrospective study was conducted among 31 Korean women, aged 27 to 48 yrs, living in the USA. Results. On the prospective report using the WDHD, the most severe complaints were fatigue or tiredness ($1.48{\pm}.98$), sensation of weight gain ($.88{\pm}98$), increased appetite ($.79{\pm}.96$) in premenstrual phase, fatigue or tiredness ($1.34{\pm}.85$), backaches ($1.06{\pm}.79$), and bloating or swelling of the abdomen ($.93{\pm}.86$) during the menstrual phase. On the retrospective report using the MMDQ, the most severe complaints during the premenstrual phase were fatigue ($2.26{\pm}1.65$), irritability ($2.06{\pm}1.48$), and backaches ($1.97{\pm}1.68$) and during the menstrual phase backaches ($2.35{\pm}1.62$), fatigue ($2.29{\pm}1.75$), and cramps ($2.23{\pm}1.80$). According to both measurements of PMS symptomology during the premenstrual and menstrual phases, the most frequently reported symptom was fatigue or tiredness. Highly rated symptoms on the MMDQ and on the WDHD were found to be similar. Conclusion. The WDHD was found to be suitable for daily prospective PMS assessment, which will be necessary for the screening and management of women with severe PMS.