• 한국의류학회지
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• 제25권9호
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• pp.1655-1660
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• 2001

여성의 생리주기가 행동성 체온조절에 미치는 영향을 관찰하고자, 본 연구에서는 6명의 건강한 여자대 학생을 대상으로 하여 22.5$^{\circ}C$와 55%RH의 환경에서 피험자 스스로가 의복을 선택하는 쾌적의복선택 실험과 피험자 스스로가 온도를 선택하는 쾌적 온도선택 실험을 각각 수행하였다. 평균피부온은 생리주기에 관계없이 쾌적온도선택 실험보다 쾌적의복선택 실험에서 높게 유지되었고, 생리주기에 따른 쾌적착의량과 쾌적온도의 차이는 보이지 않았다. 그러나, 6명의 피험자 중 4명의 피험자가 선택하여 착용한 착의량은 황체기보다 여포기에 더 많았고 (p<0.05), 5명의 피험자가 선택한 쾌적온도 역시 황체기보다 여포기에 평균 1.4$^{\circ}C$ 더 높은 것으로 나타났다 (p<0.01). 이러한 결과는, 피부의 온도를 조절함으로써 여포기보다 황체기에 심부체온을 높게 유지하기 위한 행동성 체온조절반응을 나타낸 것으로 보이나, 보다 명확한 결론을 내리기 위해서는 다양한 환경조건에서 다수의 피험자를 대상으로 하는 후속연구가 지속적으로 수행되어 야 할 것이다.

• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 1999년도 동계 학술대회 논문집
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• pp.278-283
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• 1999

• 한국의류학회지
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• 제24권2호
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• pp.199-204
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• 2000

This study was conducted to investigate the thermoregulatory responses and wearing behavior of the cold-sensitive men when exposed to the mild cold of 14$^{\circ}C$. Two sessions of experiment were carried out and five healthy young men for the cold-sensitive group(CSG) and four healthy young for the cold-insensitive group(CIG) participated in the study as subjects CSG maintained rectal temperature lower than CIG due to their thicker clothing resulted in larger decrease of rectal temperature. CSG maintained skin temperatures higher than CIG. CSG felt cooler than CIG but wore thicker clothing for thermal comfort and this made keep their sensation warmer. These results were discussed in terms of autonomic and behavioral temperature regulation.

• Journal of Biosystems Engineering
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• 제24권5호
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• pp.415-424
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• 1999

This study was conducted to assess performances of the developed environmental control systems under various seasons of Korea. In all trials for the environmental control systems, the manure pit ventilation system in the windowless pig-housing with partly slatted floor was used. Consequently, under all seasons of Korea, the complex environmental control systems could comfortably maintain the indoor temperature (14.8~27.2$^{\circ}C$) , concentrations of noxious gases (CO2 gas : 631~1,874ppm, NH3 gas : 0.3~3.2ppm), air velocity (0.11~0.23m/s), air movement, and so on. Therefore, the performances of the complex environmental control systems were evaluated as proper as the intended.

• Journal of Biosystems Engineering
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• 제24권5호
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• pp.431-438
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• 1999

The environmental control based on interactive thermoregulatory behavior for swine production has many advantages over the conventional temperature-based control methods. Therefore, this study was conducted to compare various feature selection methods using postural images of growing pigs under various environmental conditions. A color CCD camera was used to capture the behavioral images which were then modified to binary images. The binary images were processed by thresholding, edge detection, and thinning techniques to separate the pigs from their background. Following feature were used for the input patterns to the neural network ; \circled1 perimeter, \circled2 area, \circled3 Fourier coefficients (5$\times$5), \circled4 combination of (\circled1 ＋ \circled2), \circled5 combination of (\circled1 ＋ \circled3), \circled6 combination of (\circled2 ＋ \circled3), and \circled7 combination of (\circled1 ＋ \circled2 ＋ \circled3). Using the above each input pattern, the neural network could classify training images with the success rates of 96%, 96%, 96%, 100%, 100%, 96%, 100%, and testing images with those of 88%, 86%, 93%, 96%, 91%, 90%, 98%, respectively. Thus, the combination of perimeter, area and Fourier coefficients of the thinning images as neural network features gave the best performance (98%) in the behavioral classification.

• 한국지역사회생활과학회지
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• 제18권4호
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• pp.681-686
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• 2007

This study was conducted to investigate the effects of the thermally different states of human feet on temperature regulation in winter season. Five healthy female students of age 20 volunteered as subjects to participate in the study. Physiological responses such as rectal temperature and skin temperatures as well as subjective responses of thermal comfort and thermal sensation were observed. Preferred clothing and preferred temperature were also evaluated in terms of behavioral temperature regulation. The results obtained through the experiment were statistically analyzed using paired t test. Rectal temperature was decreased greater (p<.01) and mean skin temperature was maintained higher (p<.01) in feet wanning than in feet cooling. Results of preferred clothing were coincident with those of general thermal sensation. There was a higher tendency to prefer temperature in feet wanning than feet cooling in the morning. It was concluded that keeping feet skin temperature lower in the early morning and higher in the late evening would be effective in terms of regulating circadian rhythm of core temperature.

• 한국축산시설환경학회지
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• 제3권2호
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• pp.105-113
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• 1997

The environment for pig production should be controlled according to a criterion based on the pig's thermoregulartory behavior. Quantifying the pig's thermoregulatroy behavior was needed to prepare a criterion based on the pig's thermoregulatory behavior. Therefore, this study was conducted to quantify the pig's thermoregulatory behavior. The raw images were acquired according to the pig's thermoregulatory behavior and they were processed to binary images. The mean deviations of x and y coordinates of pig's images in a binary image were computed and they were multiplied. The values computed in this manner showed very wide differences according to the pig's thermoregulatory behavior. Therefore, the image processing and mean deviation can be certainly used as a method for classifying the pig's thermoregulatory behavior.

• 한국의류학회지
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• 제23권2호
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• pp.242-249
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• 1999

The purpose of this study was to investigate two different kinds of socks on physiological responses at an ambient temperature of 35$\pm$1$^{\circ}C$ and relative humidity of 50$\pm$5% Five healthy women wearing normal socks or toes socks participated as the subjects. Rectal temperature skin temperatures sweat rate blood pressure pulse rate and questionnaire wee measured. Rectal temperature skin temperature sweat rate blood pressure pulse rate and questionnaire were measured. Rectal temperature and mean skin temperature were lower after exercise at wearing toes socks . Sweat rate was higher at wearing normal socks and blood pressure and pulse rate were tend to higher at wearing toes socks. Thermal comfort temperature sensation and humidity sensation were better wearing toes socks. Thermal comfort temperature sensation and humidity sensation were better wearing toes socks than wearing normal socks but wearing comfort was better at wearing normal socks. These results will be discussed form the viewpoint of thermoregulation AVA(Arterio venous Anastomosis) and count current heat exchange.

• 한국축산시설환경학회지
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• 제5권3호
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• pp.139-148
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• 1999

This study was conducted to develop an image processing system which can classify the pig's thermoregulatory behavior under the different environmental conditions. The 4 pigs of 25kg were housed in the environmentally controlled chamber(1.4m$\times$2.2m floor space). Postural behavior of the pigs was captured with an CCD color camera. The raw behavioral images were processed by thresholoding, reduction, separation of slightly contacted pigs, labeling, noise removal, computation of number of labels, and classification of the pig's behavior. The correct classification rate of the image processing system was 97.8%(88 out of 90 testing images). The results of this study showed that the image processing system could be used for a behavior-based automatic environmental controller.

• 한국의류학회지
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• 제30권3호
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• pp.407-411
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• 2006

본 연구에서는 비만아동의 온도적응능력을 향상시키기 위해 초등학교 4학년$\∼$6학년에 재학 중인 비만아동 13명(남자 6명, 여자 7명)을 대상으로 하여, 10주간의 단기 의복착용훈련 프로그램을 시행한 후 프로그램의 효과를 알아보았다. 프로그램 시행기간 중 아동이 매일 직접 측정한 주택 내 실내온도는 평균 25.1$^{circ}C$였고, 아동이 착용한 체표면적당 의복의 무게(착의량)는 평균 300g/$m^{2}$였으며, 실내온도와 착의량 간에는 유의한 상관이 있었다(p < .01). 프로그램의 시행효과를 구체적으로 알아보기 위해, 23.0$\pm$0.5$^{circ}C$, 50$\pm$5$\%$RH로 조절된 인공기후실에서 실험을 실시하여, 반소매 면 티셔츠(0.13clo)와 T/C 반바지(0.09c1o)를 착용하고 안정상태에 있는 아동의 체온, 피부온, 혈압 및 맥박 등의 생리반응과 쾌적감 및 온랭감의 주관적 감각반응을 프로그램 시행 전후에 측정한 후 얻은 주요 결과는 다음과 같다. 평균피부온은 프로그램 시행전후에 유의한 차이가 없었으나, 전반적으로 체온과 평균혈압은 프로그램 시행 후에 내려갔다(p < .01). 주관적 감각반응에서는 프로그램 시행 후에 여아가 남아에 비해 약간 더 따뜻하게 느꼈고(p < .05), 이에 따라 아동자신이 선택한 쾌적온도는 더 낮은 경향을 나타내었다(p < .1). 이와 같은 연구결과는 비만아동의 행동성 및 자율성 체온조절연구에 유익할 것이나, 보다 명확한 자료를 얻기 위해서는 종합적이고 장기적인 훈련프로그램의 시행이 요구된다.