기상자료에 근거한 잎도열병 모형 및 실시간 예찰체계로의 구현

Thesis (doctoral)--서울대학교 대학원 :농생물학과 식물병리학전공,2001.Docto

群落微 氣象 實況 資料를 利用한 벼 稻熱病 豫察體系의 開發

학위논문(석사)--서울大學校 大學院 :農生物學科 植物病理學專攻,1995.Maste

Heat Stress and Thermoregulatory Behavior of Seoul and Busan Residents: Comparisons of 2021 and 2022

The purpose of this study was to investigate the common characteristics of thermal stress perception and thermoregulatory behavior of city residents during two consecutive summers in 2021 and 2022. The study consisted of survey and measurement of weather factors. The current method was identical to the method used by Ju et al. (2022) and we compared our results to theirs. 2,233 residents in Seoul and Busan participated in the 2022 survey. Air and globe temperature, and humidity were measured in Seoul and Busan on the same days as the survey. The results showed that (1) air humidity was higher in Busan than in Seoul in both years; (2) Seoul residents showed greater discomfort to the same increase in web-bulb globe temperature than Busan residents; (3) There were no significant differences in air temperature recognized as summer heat between Seoul and Busan residents, whereas the air temperature recognized as winter cold was 3-4oC lower for Seoul residents than for Busan residents; (4) In both cities, there were more residents who identified as being vulnerable to summer heat than those who identified as being invulnerable to heat. 80% of the respondents needed an indoor air conditioning system during summer, but 50% prepared extra clothes for excessive indoor cooling. We found the common characteristics of thermal stress perception and thermoregulatory behavior among the city residents, as described above, during the two consecutive summers. These traits could be used to develop guidelines for reducing heat-related illnesses and improving comfort of city residents during summer.N

Sex-related Differences in Cognitive Heat Stress and Thermoregulatory Behavior of Adults in Urban Areas During Summer

We investigated the sex-related differences in thermoregulatory behavior and heat-stress cognition of adults during a hot and humid summer. A total of 2,653 adults (1,341 males and 1,312 females), who resided in Seoul and Busan, participated in our online surveys from late June to August 2021. Web-bulb globe temperatures (WBGT) were monitored in Seoul and Busan at the same time as the online surveys. Data from the survey and the WBGT values were paired for analysis. The results showed that the WBGT in summer was 24.6 ± 2.4 o C. Thermal comfort, the WBGT level when feeling hot in summer, self-identified heat tolerance, threshold temperature of hot weather perceived (30.1 o C), activities (2 Met), and clothing insulation (0.4 clo) showed no sex differences. However, significant sex-related differences were found in the following : females perceived themselves as being more vulnerable to cold, sweating less, having a higher threshold temperature for cold weather, preferring higher indoor temperature, catching colds in summer and winter, using more extra clothes, using fans less during sleep, and taking fewer cold showers during summer than males (all Ps < 0.05). These results indicated that the sex-related differences during summer could be associated with differences in cold perception or cold tolerance, rather than heat perception or heat tolerance because most sex-related differences were found in the items related to environments with indoor cooling during summer.N

Relationships between WBGT and Heat-stress Cognition and Thermoregulatory Behavior of Seoul and Busan Residents in Summer

The purpose of the present study was to investigate relationships between Wet-bulb globe temperature (WBGT), subjective perception and thermoregulatory behavior of residents in Seoul and Busan during summer. A total of 2,652 adults (1,327 in Seoul and 1,325 in Busan) participated in the six times of surveys with an identical questionnaire from June to August, 2021. WBGT was measured in Seoul and Busan six times on the same days as the survey conducted. WBGT was 28.3 ± 2.7oC in Seoul and 27.8 ± 2.4oC. Globe temperature was higher in Seoul than in Busan, while air humidity was higher in Busan than in Seoul. Residents in Seoul felt more thermally uncomfortable to temperature rise compared to residents in Busan. There was not a big difference in air temperature to be perceived as hot weather between residents in Seoul (30.4 ± 2.6oC) and in Busan (29.7 ± 2.5oC). Also, no differences in self-identified heat tolerance, clothing insulation in summer, and thermoregulatory behaviors to heat stress between residents in Seoul and Busan. In summary, the difference in the relationship between WBGT and thermal comfort which were measured on the WBGT-recorded days in Seoul and Busan indicated the difference between continental and marine climates, while no difference was found in thermoregulatory behavior or usual cognition to thermal environments between two cities. These results suggest that the impact of summer weather on human adaptation to heat was waned due to indoor air-conditioning systems in summer spread out in two cities.N