• 제목/요약/키워드: perceived temperature

검색결과 87건 처리시간 0.03초

Laundering Factors in Soil Removal

  • Kadolph, Sara J.;Schofield-Tomschin, Sherryl A.;Kwon, Young-Ah
    • 한국의류산업학회지
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    • 제3권5호
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    • pp.455-465
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    • 2001
  • Assessing soil removal is of interest to the washing machine industry because of government-mandated energy savings and changes in detergent formulation and consumer laundry practices. We designed this study to examine the laundry process from a holistic perspective by integrating factors perceived to be of importance. Our purpose was to assess the impact of selected variables (fabric and soil type, wash temperature and time. detergent amount, and degree of agitation) on soil removal using accelerated laundry conditions. We used the Taguchi method to develop the research design and ANOVA to analyze the data. Although soil removal was affected by fabric type, soil type, type and amount of detergent, degree of agitation, wash time and temperature, and water hardness and volume, wash temperature was the most significant variable.

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일회용 전신 보호복의 온열 스트레스 분석 (A Thermal Stress Analysis of Disposable Personal Protective Coveralls)

  • 박소영;이예진
    • 한국의류학회지
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    • 제47권6호
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    • pp.1193-1203
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    • 2023
  • This study aims to provide primary data regarding the thermal stress of disposable personal protective coveralls. Thermal stress and surface temperature measurements were taken among ten men wearing coveralls. The size of the ten men corresponds to a size eight in Size Korea. As a result of thermal stress, sensations of humidity and discomfort were higher when wearing Level C compared to Level D. Level D felt significant thermal stress in their upper body after exercise. However, they did not feel such stress in their lower body. Level C felt thermal stress in their upper and lower body after exercise. In addition, in Level C, the ratings of perceived exertion blood pressure and pulse rate after exercise were higher than those of Level D. Furthermore, the surface temperature of disposable personal protective coveralls among Level C was slightly higher than that of Level D.

Comparison of Temperature Indexes for the Impact Assessment of Heat Stress on Heat-Related Mortality

  • Kim, Young-Min;Kim, So-Yeon;Cheong, Hae-Kwan;Kim, Eun-Hye
    • Environmental Analysis Health and Toxicology
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    • 제26권
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    • pp.9.1-9.9
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    • 2011
  • Objectives: In order to evaluate which temperature index is the best predictor for the health impact assessment of heat stress in Korea, several indexes were compared. Methods: We adopted temperature, perceived temperature (PT), and apparent temperature (AT), as a heat stress index, and changes in the risk of death for Seoul and Daegu were estimated with $^1{\circ}C$ increases in those temperature indexes using generalized additive model (GAM) adjusted for the non-temperature related factors: time trends, seasonality, and air pollution. The estimated excess mortality and Akaike's Information Criterion (AIC) due to the increased temperature indexes for the $75^{th}$ percentile in the summers from 2001 to 2008 were compared and analyzed to define the best predictor. Results: For Seoul, all-cause mortality presented the highest percent increase (2.99% [95% CI, 2.43 to 3.54%]) in maximum temperature while AIC showed the lowest value when the all-cause daily death counts were fitted with the maximum PT for the $75^{th}$ percentile of summer. For Daegu, all-cause mortality presented the greatest percent increase (3.52% [95% CI, 2.23 to 4.80%]) in minimum temperature and AIC showed the lowest value in maximum temperature. No lag effect was found in the association between temperature and mortality for Seoul, whereas for Daegu one-day lag effect was noted. Conclusions: There was no one temperature measure that was superior to the others in summer. To adopt an appropriate temperature index, regional meteorological characteristics and the disease status of population should be considered.

여름철 작업자들의 고체온증 예방을 위한 액체냉각복 개발 및 효과적인 냉각온도와 인체 냉각부위 탐색 (Developing Liquid Cooling Garments to Alleviate Heat Strain of Workers in Summer and Exploring Effective Cooling Temperature and Body Regions)

  • 정재연;강주호;설선홍;이주영
    • 한국의류산업학회지
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    • 제22권2호
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    • pp.250-260
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    • 2020
  • The purpose of the present study was to explore the most effective body region and cooling temperature to alleviate heat strain of workers in hot environments. We developed liquid cooling hood, vest, sleeves and socks and applied the water temperatures of 10, 15, 20, and 25℃ through the liquid cooling garments in a hot and humid environment (33℃ air temperature and 70% RH air humidity). A healthy young male participated in a total of 16 experimental trials (four cooling garments × four cooling temperatures) with the following protocol: 10-min rest, 40-min exercise on a treadmill and 10-min recovery. The results showed that rectal temperature, mean skin temperature, and ratings of perceived exertion during exercise; heart rate and diastolic blood pressure during recovery; and total sweat rate were lower for the vest condition than other garment conditions(p < .05). However, there was no differences in mean skin temperature among the four cooling garments when we compared the values converted by covering area(%BSA). When we classified the results by cooling temperature, there were no consistent differences in thermoregulatory and cardiovascular responses among the four temperatures, but 25℃ water temperature was evaluated as being the most ineffective cooling temperature in terms of subjective responses. In conclusion, the results indicated that wearing cooling vest with < 20℃ cooling temperature can alleviate heat strain of workers in hot and humid environments. If the peripheral body regions are cooled with liquid cooling garments, larger cooling area with lower cooling temperature than 10℃ would be effective to reduce heat strain of workers. Further studies with a vaild number of subjects are required.

온돌환경이 수면시의 생리반응엔 미치는 영향 -봄철 수면시 침실내 온열환경과 침상기후- (Effect of Ondol Environment on Physiological Regponseg during Sleeping (II) The Actual Conditions of Bedclimate in Spring -)

  • 이순원;권수애
    • 한국의류학회지
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    • 제21권3호
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    • pp.516-523
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    • 1997
  • The actual conditions of bedclimate are investigated depending on the regions and housing styles used on ondol in spring. Sixty healthy men and women (30 of them live in apartment and 30 of them live in detached house, 20 of them live in Wonju, 20 of them live in Cheongiu and 20 of them live in Pusan). The results are as follows: 1) The differences of bedclothes thickness between spring and autumn were not significant. weight of sleep-wear in spring was less than those in the autumn. 2) In the spring, the temperature and humidity of bedroom, floor, on/under the mattress, were lower and the temperature inside the sleep-wear was higher than those in the autumn. 3) The differences of the temperature and humidity of bedroom, the bed climate, and the clothing microclimate were significant by the regions and housing styles in spring. The temperature of bedroom and inside sleep-wear, the humidity of bedroom and inside sleep- wear in the apartment were higher than those in the detached house. 4) The differences of comfort sensation on the bedroom conditions was significant by the regions, and the differences of thermal sensation was significant by the housing styles. Most subjects perceived warm and dry but comfortable.

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Experimental Observation of Temporal Dark Image Sticking in AC PDP with Face-to-Face Sustain Electrode Structure

  • Kim, Jae-Hyun;Park, Choon-Sang;Kim, Bo-Sung;Park, Ki-Hyung;Tae, Heung-Sik
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권1호
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    • pp.617-620
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    • 2007
  • The temporal dark image sticking phenomena for both the face-to-face and coplanar sustain electrode structures were compared. For both structures, the temporal dark image sticking phenomena were examined by measuring the difference in the IR emission, display luminance, perceived luminance, and temperature between the image sticking and the no image sticking cells. For the face-to-face structure, the 10-min sustain discharge causes a small increment of the panel temperature thanks to the ITO-less electrode structure, thereby resulting in mitigating the temporal dark image sticking phenomenon.

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남녀 중학생의 겨울철 교실 내 한서감과 기후적응성 (Thermal Sensation in Winter Classroom and Cold Climate Adaptability of Junior High School Students)

  • 조아름;심현섭
    • 한국의류산업학회지
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    • 제20권6호
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    • pp.744-751
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    • 2018
  • This study aimed to provide the information on the thermal sensation and the amount of clothing worn of junior high school students in winter classroom the relation with their climate adaptability. Total usable questionnaires were obtained from 467 male and female students. The questionnaire included general characteristics, physical characteristics, self awareness of body shape, climate adaptability and subjective thermal sensation in winter classroom. The data were analyzed using SPSS Statistics 18.0 for frequency analysis, factor analysis, chi-square analysis, t-test and correlation analysis. The results were as follows. The average body type based on BMI was normal($20.1kg/m^2$ ). Females perceived their body type as thinner than males. They wore more (8.67 garment items compared to 8.14 for males). Only about 25% of students voted the thermal sensation to neutral(47% cool~very cold, 28% warm~very hot). Females were more sensitive to the cold, perceived less healthy, and wore more garments in the cold. Students felt colder in winter classroom when their cold adaptability was lower and they actively adjusted thermal insulation against the cold. It is recommended to suggest the guidelines for the proper indoor temperature and for the wear behavior in classroom in the perspectives of increasing the learning efficiency and improving the students' climate adaptability.

산욕부 안위에 영향을 미치는 병원환경 요인에 관한 연구 (Study on Hospital Environmental Causes Affected the Mother′s Comfort After Her Child Birth)

  • 변수자
    • 대한간호학회지
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    • 제8권1호
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    • pp.1-15
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    • 1978
  • The Purpose of this study is to examine closely the causes influenced upon the comfort and recovery of the woman delivered of a child in the hospital at the same time to understand environmental status of hospitals in order to promote mother's health recovery, and to improve hospital environment by emphasizing the meaning of environment and health before the medical staff and hospital administrative authority. In the method of servery of the research, 165 post paestum patients have been randomly selected who were accommodated and delivered their babies at OB(obstetric ) & GY (Gynecologic) unit the 7 general hospitals for the period of 6 December 1976 through 17 December 1976. As for the survey, it has been used of Questionnaire where we have 65 items in the respect of personal environment in the hospital such as trusting nurse, ability, reliability, kindness and etiquette of nurse and tile character of nurse the relationship with patients the other respect of physical environment included 9f temperature, moisture. air-ventilation lightening noise, cleanness. facilities, and the third realm being of mother's hearth ground to have the following conclusion 1. The feature of the collected personnel they are from OB or GY sects of from OB unit of the other 5 hospitals except the two general hospitals of the college or school Otherwise the rate of the patients to nurses would be 9 : 1. As for the nurses'ground it would be appeared of 20-25 years of age as the 76%. either 3 year course or 4 year course in the education would be each 50% and less than 2 year experience case would record as of 60 %. In the respect of hospital physical environmental status, there we have two hospitals without any thermometers, on the other han4 nowhere there's hygrometer, otherwise, the lightening is normal or over than normal As for the structure of noise protection the corridors're, generally speaking worse than rooms, nerver hueless, there's no ventilating system in the hospitals. The rooms'repainted in white and yellow, light green white, or green color. The patient's clothing were in green pink blue, light green or in white co for. There're not anything special in both decoration and equipments. Most of them used tall beds except in one hospital 2. To the extent of perception of patient's hatch 9round and hospital environment it is presented that they perceived nurse's ability in highest in total human variable, though perceived kindness or etiquette in the lowest otherwise, comparatively high in total average. 3. In the respect of physical environment it is highest perceived of lightening terms, otherwise, lowest perceived of air ventilation and total average became lowest than the one of the original record 4. To ages, in the respect of hatch ground rather old aged mother than the younger one has perceived that nurse would be trusting, in good service character, able, at the same time, liable, Otherwise, in physical environment regardless of age, they perceived lightening in high and remarkably lower in ventilation As a result of the examination of the difference in hospital environment to each age it is appeared of statistical difference at 5% level of ability in the personal environment otherwise little difference as for physical environment 5. In the respect of perceiving level to educational standard it is highly perceived of personal environment for higher ranking group rather than lower group in the educational standard. In case of physical environment it is highly perceived for lower level group rather than higher level group in educational background. The variables which have statistical significance at 5% level are from trusting kindness, etiquette and total kindness, etiquette and total all significance at 5% level are from trusting, kindness, etiquette and total human environment variable in personal environment, otherwise, there's little difference in the physical environment. 6. The perceiving level due to times of admission and accommodation at the hospital would be cleared out as gradual higher perception both physical and personal environment in the hospital. At 5% significant level of the ventilation condition in physical environmental variable it is presented of meaningful difference otherwise, there we have little difference both in Personal variable and other one. 7. In accordance with living standard, the perception degree of personal environment in tee hospital would be inclined to increase to higher living standard on the other hand, in case of the physical environment, the perception level world increase to lower living standard At 5 % level, the trustuariable and total scores in the personal eicuironmectal variable there appeared a meaningful/ significant difference otherwise, there presented little difference both in physical environmental and other variable to the living standard 8. Pertaining to family unit, the mother of an independent family unit perceived highly in all respect of the personal and the physical environment in the hospital rather than the woman of succeeding family unit. At 5 % level there appeared a difference in the respect of kindness and etiquette both in personal environment variable, on the other hand, there hardly marked a difference between other variable and physical environmental one. 9. The degree of perception to comforting level has little connection with a statistical difference the age, educational level hospital admitting times, living standard or family unit. 10. The most effective variable to mother's comforting level will be nurse's ability, reliability, trusting manner, and total physical environment variable in order.

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지각된 사회적 배제가 따뜻한 조명 선호에 미치는 효과 (The effect of perceived social exclusion on warm lighting preferences)

  • 이국희
    • 한국HCI학회논문지
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    • 제14권2호
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    • pp.5-12
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    • 2019
  • 인간의 기본 욕구 중 하나인 존중의 욕구를 충족시키지 못하는 사회적 배제는 이를 지각한 사람들로 하여금 물리적 따뜻함을 추구하도록 만든다고 알려져 있다. 그러나 사회적 배제가 따뜻함을 추구하게 만드는 현상이 조명의 색 같은 감성적이고 상징적인 차원에도 일반화될 수 있을지에 대해서는 연구가 드물었다. 본 연구는 지각된 사회적 배제가 따뜻한 조명 선호에 미치는 효과를 검증하기 위해 이루어졌으며, 이를 위해 두 가지 실험을 수행하였다. 실험-1은 어제 사람들로부터 존중받은 사람은 사회적 배제를 지각하지 않은 집단으로, 존중받지 못한 사람은 사회적 배제를 지각한 집단으로 구분한 후, 따뜻한 조명(3000K), 중립적 조명(4000K), 차가운 조명(6000K)에 대한 선호도를 측정하였다. 결과적으로 사회적 배제를 지각한 집단은 그렇지 않은 집단보다 따뜻한 조명 선호도가 강했고, 차가운 조명 선호도는 약했다. 또한 사회적 배제를 지각한 집단은 중립적 조명보다 따뜻한 조명을 강하게 선호하는 반면, 차가운 조명을 약하게 선호함을 확인하였다. 실험-2는 실험-1과 동일한 방식으로 집단을 구분한 후, 따뜻한 조명이 적용된 공간, 중립적 조명이 적용된 공간, 차가운 조명이 적용된 공간에 대한 선호를 측정하였다. 결과적으로 사회적 배제를 지각한 집단은 그렇지 않은 집단보다 따뜻한 조명이 적용된 공간에 대한 선호도가 강했고, 차가운 조명이 적용된 공간에 대한 선호도는 약했다. 아울러 사회적 배제를 지각한 집단은 중립적 조명이 적용된 공간보다 따뜻한 조명이 적용된 공간을 강하게 선호하는 반면, 차가운 조명이 적용된 공간은 약하게 선호함을 관찰하였다. 본 연구는 장애인, 다문화 가정, 이주 노동자와 같이 사회적 배제를 경험한 사람들의 생활공간 디자인, 이들을 대상으로 한 인공지능 상담 서비스 및 친구 캐릭터 개발 등에 시사점을 준다.

보건기상정보 제공을 위한 폭염특보 운영현황 및 개선방안 조사 (Investigation of Operation and Improvement for Heat Watch Warning System to Provide Health-Weather Information)

  • 황미경;강윤희;김성민;김유근
    • 한국환경과학회지
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    • 제28권2호
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    • pp.277-285
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    • 2019
  • Heat watch warning systems are operating in Korea and several other countries (China, the United Kingdom, France, the United States, Germany, Australia, and Japan). The heat wave indices used in this system are the heat index, perceived temperature, the wet bulb globe temperature, and the daily maximum temperature. To improve the heat wave advisory and warning system, some suggestions have been made. The meteorological-health index (i.e., indirect index), has especially been proposed in previous studies. This information should be provided not only to vulnerable groups (seniors, infants, and children), but also to outdoor workers who may be particularly exposed to heat waves. In addition, to have sufficient preemptive response times, the need for an extension of the heat watch warning period was suggested. Finally, the subdivision of administrative units and risk stages was proposed.