• Solar Energy
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• v.1 no.1
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• pp.12-22
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• 1981

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.21 no.4
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• pp.257-270
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• 1992

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.11 no.1
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• pp.11-24
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• 1982

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.20 no.5
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• pp.334-341
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• 2008

The purpose of this study is to investigate the effects of changing air temperature and the changing on/off periods of the air-conditioner system. Adding to that, this paper discuss is to consider the effects of air temperature with the air-conditioner system upon the human thermal comfort. The experiment is conducted during the summer. The subjects(6 young females) are exposed to the following conditions: combinations of 2 Swing and 2 Linear air control Conditions. (2 Swing during 40 min, 4 Swing during 40 min, Linear 40 min, Linear 60 min in still air and RH 50%). From the experiment, the following results are obtained; the thermal sensation vote is neutral after 90 minute. The mean skin temperature ranged about $34^{\circ}C$ at all conditions. The skin temperature was greatly affected by 2 Swing big amplitude condition.

• Science of Emotion and Sensibility
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• v.3 no.2
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• pp.75-84
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• 2000

문명의 발달과 함께 수면부족으로 인한 여러 가지 스트레스와 질환이 증가하게 되어 최근 수면연구에 대한 관심이 증가하고 있다. 본 연구는 다양한 온열환경 조건에서의 쾌적한 수면을 위한 온열환경을 제시하기 위해, 5명의 여성 피험자를 대상으로 22$^{\circ}C$, 26$^{\circ}C$, 3$0^{\circ}C$의 일정온도 조건과 $25^{\circ}C$에서 1시간 후와 2시간 후에 각각 1, 2$^{\circ}C$를 상승시켜주는 변동온도 조건하에서 수면생리신호를 측정하였다. 그리고, 수면단계 평가를 이용하여 총 수면시간, 깊은 수면의 비율, 그리고 최초 수면시작 시간에서 최초의 서파 수면이 나타나기까지의 지연시간 등의 수면효율을 평가하였다. 그 결과, 일정온도 조건에서는 26$^{\circ}C$에서 총 수면시간(466.7$\pm$10.25분)과 깊은 수면의 비율(33.1$\pm$4.95%)은 타 조건에 비해 높게 나타났고, 최초 서파수면까지의 지연시간(9.8$\pm$3.33분)은 타 조건에 비해 낮게 나타나 쾌적한 수면을 위한 가장 적절한 온열조건임을 관찰할 수 있었다. 그리고 변동온도 조건에서는 4가지 온열조건간에는 큰 차이가 나타나지 않았지만, 모든 조건에서 일정온도 조건보다는 좋은 결과를 나타내었다. 또한 수면 중 신체 움직임과 설문 분석에서도 동일한 결과를 보였다. 본 연구를 통해, 수면생리신호를 이용한 수면 쾌적성 분석은 수면의 질적인 상태를 관찰하는데 매우 적합한 파라메터를 도출할 수 있으며, 여러 가지 수면환경 조건을 평가하는데 매우 유용한 지표가 될 수 있음을 보였다.e results suggest that hCG treatment at 7 days after insemination could be used to increase the pregnancy rate of embryo transfer, and transfer, and only the recipients with PUN concentration of <12 mg/dl were influenced by treatment with hCG./TEX>이었으며, 이는 화성 기원을 지시한다.sucrose를 이용한 2단계 희석이 수정란의 생존성을 향상시키는 것으로 나타났다. 또한 발육 단계별 생존성에 있어서는 발육이 진전된 확장배 반포 시에 동결하는 것이 배반포기에 동결하는 것 보다 유리한 것으로 나타났다.ody를 사용하여 flow cytometery해석을 실시하는 한편 125I-hGH binding assay에 의하여 hGH binding activity를 측정하였다. 최종적으로 GH signal transduction의 target genedf으로 알려져 있는 serine protease inhibitor 2.1(Spi 2.1) gene의 promotor activity를 검토한 결과 hGHR을 transfect한 CHO Cell에 있어서 hGH의 농도에 의존적으로 증가되었다. 따라서 본 실험에서 cloning한 cDNA hGHR는 native hGHR와 같은 기능을 가지는 것으로 판명되었다.것으로 판명되었다..ments of that period left both in Japan and Korea. "Hyojedo" in Korea is supposed to have been influenced by the letter design. Asite- is also considered to

• KIEAE Journal
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• v.11 no.3
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• pp.37-42
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• 2011

This study aims to analyze the field survey of thermal comfort in office building with national thermal environment standard. Internal and external temperatures were measured at ten minute intervals and compared in accordance with the national standard for thermal environment. Sixty two workers filled in the questionnaire survey forms five times a day for 40 days. Field monitoring of offices in Seoul, Korea were conducted from 20 July to 28 August. Result for the comfort temperature was set a $26.30^{\circ}C$. This indicates that the 26 degree is reliable for the Korean standard. Indoor temperature standard can reduce energy use by air-conditioned buildings and the temperature would be offer comfort to occupants.

• Journal of Korean Association for Spatial Structures
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• v.7 no.3 s.25
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• pp.67-77
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• 2007

The purpose of this study is to provide fundamental heating design data for the large public enclosures as gymnasium. This study executed indoor thermal environment verification of the existing gymnasium by measuring temperature distribution with and without heating the space in winter. Heating loads from human body was not considered. We examined various indoor thermal environment factors of the large enclosed space in this study which include vertical and horizontal temperature distribution, supply and return air flow feature, thermal comfort environment feature, amount of ventilation and etc.

• Science of Emotion and Sensibility
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• v.17 no.3
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• pp.95-106
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• 2014

This research analyzed biosignals associated with the change of emotion from lighting felt by the occupants and task type under various indoor thermal environments and illuminance, and examined the biosignals' impacts on work. To this end, the indoor thermal environment was constructed on the basis of PMV (predicted mean vote) index value, and various indoor environments were created by changing the brightness of LED stands. In this manner, a variety of indoor environments were constructed, and experiments were carried out. This research evaluates the sensibility response to lighting through a questionnaire survey in the given environment and incorporates different types of error searches. In this way, changes were analyzed by measuring electroencephalogram (EEG) and electrocardiograms (ECG). As a result, all biosignals on the task type showed significant differences from the thermal environment change. When PMV index value was 0.8 (temperature: $25^{\circ}C$, humidity: 50 %), concentration and attention were the most activated. However, the biosignals did not show significant differences from the illuminance change. Concentration on an occupant's work capability was confirmed to be closely related to the thermal environment. As for the subjective emotional response to lighting, the occupants felt comfort as illuminance was lower, while they felt discomfort as illuminance was higher. However, there were no significant differences from the thermal environment change.

• Science of Emotion and Sensibility
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• v.17 no.2
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• pp.55-62
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• 2014

In this study, a questionnaire was developed to assess error search and correction tasks, and an analysis was performed on the accuracy of the tasks and the time required for their completion in order to identify the effects of LED light source illumination on visual performance according to changes in a predicted mean vote(PMV) thermal environment. In addition, a subjective evaluation was performed by conducting a survey on the level of visual fatigue experienced during the tasks. In the experiment, four types of PMV thermal environments were established according to PMV values in the temperature range of $(17{\pm}1-29{\pm}1)^{\circ}C$ and the humidity range of $(50{\pm}5-60{\pm}5)%$, and the LED light source illumination was divided into three types: 400lx, 700lx, and 1000lx. The experimental results confirmed that the accuracy of the error search(LED p value=0.058, PMV*LED p value=0.083) and correction tasks and the time required(LED p value=0.004, PMV p value=0.000) for their completion were affected by changes in both the PMV thermal environment and the LED light source illumination, whereas a significant difference in visual fatigue was observed only in the PMV thermal environment(p value=0.003).

• The Magazine of the Society of Air-Conditioning and Refrigerating Engineers of Korea
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• v.35 no.6
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• pp.15-23
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• 2006