• Proceedings of the Korean Society for Emotion and Sensibility Conference
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• 1999.11a
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• pp.115-120
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• 1999

본 연구에서는 실제 조건과 유사하게 모사된 사무실 공간을 대상으로 냉방시 급기 위치에 따른 기온, 기류속도, 복사온도를 측정하여 열환경을 평가하였다. 사무실 공간은 실제의 조건과 유사하게 인체, 조명, 사무기기의 부하를 전기히터로 모사했으며, 외기부하는 벽체에 설치된 열교환기를 통과하는 부동액의 온도를 제어함으로써 모사하였다. 실험 결과 냉방 조건에서는 바닥급기 방식의 경우 평균온도가 천장급기에 비해 낮아 에너지 절약 측면에서 유리함을 알 수 있었다. 그러나 천장급기에 비해 수직온도차가 크고 급기구 근처에서는 수직온도차에 의한 불쾌감과 빠른 기류속도에 의한 드래프트의 위험이 있는 것으로 나타났다.

• Bulletin of Korea Environmental Preservation Association
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• v.9 no.20
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• pp.27-28
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• 1987

• Journal of Korean Society of Environmental Engineers
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• v.36 no.5
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• pp.317-324
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• 2014

Environmental tobacco smoke (ETS) samples were collected separately in mainstream and side-stream smoke using a self-designed smoking machine, and a total 40 of PM2.5 was collected with low volume air sampler at indoor environments with and without ETS in Daejeon, Korea. About 20 trace elements including toxic metals like As, Cr, Mn, Se, V, and Zn were determined in PM2.5 and ETS samples by instrumental neutron activation analysis (INAA). It is found that the emission factors of K, Cl, Na, and Al were much higher than those of toxic elements for both mainstream and side-stream smoke. The average concentration of PM2.5 was enriched by 1.5 times at smoking area ($58.7{\pm}18.1{\mu}g/m^3$) than at smoking free area ($38.6{\pm}12.7{\mu}g/m^3$). The concentration ratio of each element between smoking and smoking free area were ranged from 1.1 to 6.0 except Cu (1.0); especially, Ce (6.0), La (5.2), K (2.3), and Co (2.0) showed higher ratio, which suggests that the ETS is one of the possible increasing factors of PM2.5 and elemental concentration at indoor environment.

• 월간산업보건
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• s.208
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• pp.16-21
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• 2005

• 산업보건소식
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• no.23
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• pp.32-34
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• 1985

• 산업보건소식
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• no.21
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• pp.35-36
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• 1985

• 산업보건소식
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• no.22
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• pp.31-32
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• 1985

• 정보화사회
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• s.38
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• pp.40-43
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• 1991

사무실에서의 문서추방, 과연 가능한가? 가능하다면 얼마만큼 빨리, 또 어떤 분야에서부터 가시화될 것인가. 본지는 지난호에 이어 Paperless 환경구축과 그 기술(II)을 연재한다.

• The Journal of the Acoustical Society of Korea
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• v.42 no.6
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• pp.617-626
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• 2023

This study aims to investigate the preferred sound level of water sound for various levels of open-plan-office noise regarding soundscape quality and speech privacy. And assessment of the work efficiency of the water sound. For the laboratory experiment, office noise was recorded using a binaural microphone in a real open-plan office. For the assessment of the soundscape quality and speech privacy, Overall Soundscape Quality (OSQ) and Listening Difficulty (LD) were evaluated under three different sound levels (55 dBA, 60 dBA, and 65 dBA) and five different signal-to-noise ratios (SNR -10 dB, -5 dB, 0 dB, +5 dB, and +10 dB). After the evaluation, the preferred SNR was proposed according to OSQ and LD. For the assessment of to work efficiency of water sound, this study evaluated the cognitive performance of both of the condition noise only and combine the water sound with office noise. The results showed that LD increased as the water sound level increased, but OSQ decreased. When the water sound level was more than the office noise level, the OSQ decreased from noise only. Therefore, considering OSQ and LD, the preferred SNR of water sound was -5 dB for all noise levels. At the preferred level of water sound, the cognitive performance results were shown to decrease at 55 dBA compared to noise only, but at 60 dBA and 65 dBA combine the water sound results were increased than the noise only.

• Bulletin of Korea Environmental Preservation Association
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• s.402
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• pp.6-9
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• 2012

전국적으로 도시화가 진전됨에 따라 아파트, 사무실 등 실내공간에서 생활하는 시간이 하루의 90%를 넘어서고 있어 실내 공간의 환경관리가 건강관리의 중요 요소로 등장하고 있으며, 저출산 고령화가 심화되면서 취약한 노년층 인구의 증가와 힘께 과보호를 받는 어린이 인구는 증가하고 있어 면역력 약화에 따른 질환 및 만성질환의 이환 기능성이 환경보건 분야의 새로운 과제로 등장하고 있다.