• 제목/요약/키워드: weather conditions

검색결과 1,782건 처리시간 0.037초

The Effect of Adjustable Garment Closures and Layering on Insulation in Cold Weather

  • Kim, Chil-Soon;McCullough, Elizabeth
    • 한국의류산업학회지
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    • 제3권5호
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    • pp.479-485
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    • 2001
  • This study was to determine the effect of garment closures and layering systems on insulation, using a thermal movable manikin in cold weather conditions. The insulation values of ensembles with opened and closed features were measured, and those of four different layered clothing ensembles were tested while standing and while walking. Our research indicated that when there was an opening involved in design the system, insulation decreased; even a zip-out lining in the armpit affected little. If a light weight jacket and pants are put on over a fleece shirt and pants instead polyester underwear, the amount of insulation increase was 0.43 clo.

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부산연안역에서의 대기오염기상 예보시스템 개발에 관한 연구 -고농도 오존일의 예측을 중심으로- (A Study on Development of Air Pollution Weather Forecast System over Pusan Coastal Area - Centering around Forecast of Ozone Episode Day-)

  • 김유근;이화운
    • 한국환경과학회지
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    • 제5권4호
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    • pp.399-410
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    • 1996
  • Pusan is the largest coastal city with a population of about four mi18ion in Korea. Because of increased and confused traffic, photochemical air pollution become a major urban environmental problem recently. The photo-chemical air pollution weather forecasting method preciser than existing air pollution forecast method has been developed to forecast ozone episode days with meteorological conditions using the data measured at 7 air quality continuous monitoring stations from lune to September using 2 years (1994, 1995). The method developed in present study showed higher percentage correct and skill score than existing air pollution forecasting in KMA ( Korea Meteorological Administration).

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전력계통(電力系統) 기상정보(氣象情報)시스템의 도플러레이다 위치(位置) 선정(選定) (Doppler Rader Location of Weather Information System for Power System Operation)

  • 김영한;이효상;김재영
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1989년도 추계학술대회 논문집 학회본부
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    • pp.206-210
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    • 1989
  • With the economy expands and the increasing living standard of people, the better quality of electricity which is closely related with weather conditions should be supplied to the customers especially using precised facilities. In this paper, the configuration of the weather information system and its application to the power system operation are generally introduced. And also, a method with test result is presented to find the suitable radar coverage area including the condition of electromagnetic wave shut off.

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여름철 Apt현장 조건에서의 철근 및 거푸집의 온도특성 (Temperature characteristics of iron and molds in summer apartment conditions)

  • 이제현;문병룡;이상운;이정교;한민철;한천구
    • 한국건축시공학회:학술대회논문집
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    • 한국건축시공학회 2016년도 추계 학술논문 발표대회
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    • pp.17-18
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    • 2016
  • On apartment construction sites in hot weather environments, the high temperature of 30℃ and above and radiation from the sun cause iron and mold temperatures to rise, which lowers worker efficiency and has a negative effect on the deposited concrete. Therefore this study measured the temperature of D10 ~ D16 iron and aluminum items actually used on box frame apartment construction sites currently under construction, in order to give reference information to solve hot weather concrete problems. The temperature measurement results showed that for iron, temperatures rose to around 45℃, and for mold around 58.8℃, calling for safety measures for workers in case of possible burning and other problems.

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PSCAD/EMTDC를 이용한 풍력발전시스템의 과도현상 시뮬레이션에 관한 연구 (Study on the Transient Phenomenon Simulation of Wind Power Generation System using PSCAD/EMTDC)

  • 한상근;박민원;유인근
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2002년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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    • pp.309-312
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    • 2002
  • For the purpose of more effective simulation of the utility interactive WPGS(Wind Power Generation System) the SWRW (Simulation method for WPGS using Real Weather condition) is used in this paper, in which those of three topics for the WPGS simulation. user-friendly method, applicability to grid-connection and the utilization of the real weather conditions, are satisfied. The simulation of the WPGS using the real weather condition including components modeling of wind turbine system is achieved by introducing the interface method of a non-linear external parameter and FORTRAN using PSCAD/EMTDC. The simulations of steady-state and transient-state are performed effectively by the introduced simulation method. The generator output and current supplied into utility can be obtained by the steady-state simulation, and THD can be achieved by analyzing the results as well. The transient - state of the WPGS can be analyzed by the simulation results of over cut-out wind speed.

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기상에 따른 고령환자의 질병 발생빈도 예측모형 비교 (Comparison of forecasting models of disease occurrence due to the weather in elderly patients)

  • 이선재;여인권
    • 응용통계연구
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    • 제29권1호
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    • pp.145-155
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    • 2016
  • 이 논문에서는 기상에 따른 고령 환자의 질병 발생빈도를 예측하는 방법을 비교한다. 분석을 위해 건강보험심사평가원의 고령 환자 의료 자료와 기상청 자료를 주별, 권역별로 병합한다. 기상에 영향을 받는 질병의 주별 발생 빈도를 ARMAX모형, VARMAX모형, TSCS회귀모형으로 분석하고 MSE, MAPE, MAE 기준으로 모형을 비교했다.

스마트 농업을 위한 생산량 예측 방법 (Yield Forecasting Method for Smart Farming)

  • 이준구;문애경
    • 한국정보통신학회:학술대회논문집
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    • 한국정보통신학회 2015년도 추계학술대회
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    • pp.619-622
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    • 2015
  • 최근 심각한 기후변화로 인하여 농산물 생산성 및 농산물 가격의 변동성이 커지고 있으며, 이러한 문제를 해결하기 위하여 농산물의 생산량을 예측하는 방법이 연구되고 있다. 본 논문에서는 선형 방정식을 이용하여 생산 단수, 생산 면적, 기후 요소를 예측하였으며, 기후 요소의 가중치 합을 이용하여 보정된 생산 단수와 생산 면적을 곱하여 생산량을 계산하였다. 실험에서 예측한 생산량은 실제 생산량과 비교하여 약 90% 이상의 예측율을 보였다.

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The Research about Aerial photographing system(PKNU No.2) development

  • Kim, Ho-Yong;Choi, Chul-Uong;Lee, Eun-Khung;Jun, Sung-Woo
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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    • pp.110-112
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    • 2003
  • The researchers, who seek geological and environmental information, depend on the remote sensing and aerial photographic datum from various commercial satellites and aircraft. However, the adverse weather conditions and the expensive equipment can restrict that the researcher can collect their data anywhere and any time. To allow for better flexibility, we have developed a compact, a multispectral automatic Aerial photographic system. This system's Multi-spectral camera can catch the visible (RGB) and infrared (NIR) bands (3032${\ast}$2008 pixel) image. Our system consists of a thermal infrared camera and automatic balance control, and it managed and controlled by a palm-top computer. And it includes a camera gimbals system, GPS receiver, weather sensor and etc. As a result, we have successfully tested its ability to acquire aerial photography, weather data, as well as GPS data, making it a very flexible tool for environmental data monitoring.

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Relation between Disease Incidence of Bacterial Grain Rot of Rice and Weather Conditions

  • Noh, Tae-Hwan;Kim, Hyung-Moo;Song, Wan-Yeob;Lee, Du-ku;Kang, Mi-Hyung;Shim, Hyeong-Kwon
    • Plant Resources
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    • 제7권1호
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    • pp.36-38
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    • 2004
  • Bacterial grain rot of rice caused by Burkholderia glumae was examined between weather condition and disease incidence. From 1998 to 2000, average disease incidence was 3.0 % without difference in survey regions. However, it was related closely to amount of rainfall that disease incidence higher in 1998 and 2000 to 3.0 % and 3.6 % respectively than 2.3 in 1999 relatively small volum of rainfall season.

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