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왕십리역 주변 상업지역의 하수관거를 중심으로 악취발생 현황조사
송석민,서웅교,이명재,이혁진,조우성,조효재,설경화,김수진,김기현 한국냄새환경학회 2015 실내환경 및 냄새 학회지 Vol.14 No.2
Odor problems in urban areas have become a common cause of public complaints. In order to gain a better understanding of odor problems, we investigated the emission characteristics of odorants originating from manholes (n=22) and stormwater catch basins (n=48) (SCBs) around Wangsimni station in Seoul. To this end, concentrations of H2S and NH3 were measured after arbitrarily dividing the whole study area into five different districts. Our measurements were made to allow comparisons between three different criteria: (1) manholes vs. SCBs, (2) temporal variation between morning vs. afternoon, and (3) water content in the sewer system. The average concentration of H2S in manholes and SCB were 2.39 ppm and 0.81 ppm, respectively. In contrast, their NH3 counterparts were 1.86 ppm and 1.02 ppm, respectively. According to the contouring method made to identify spatial distribution characteristics, of odorants a relatively lowland site D was expected to work as a significant emission source in light of the transportation patterns of a sewer system. Moreover, higher concentrations of odorants were prevalent in the afternoon (as the prime time for commercial activities) relative to before noon. If concentration data are converted into odor intensity, H2S was the predominant component exerting controls on the odor pollution in these underground environments.
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왕십리역 주변 상업지역의 하수관거를 중심으로 악취발생 현황조사
송석민,김기현,서웅교,이명재,이혁진,조우성,조효재,설경과,김수진 한국냄새환경학회 2015 실내환경 및 냄새 학회지 Vol.14 No.2
Odor problems in urban areas have become a common cause of public complaints. In order to gain a betterunderstanding of odor problems, we investigated the emission characteristics of odorants originating from manholes(n=22) and stormwater catch basins (n=48) (SCBs) around Wangsimni station in Seoul. To this end, concentrationsof H2S and NH3 were measured after arbitrarily dividing the whole study area into five different districts. Ourmeasurements were made to allow comparisons between three different criteria: (1) manholes vs. SCBs, (2)temporal variation between morning vs. afternoon, and (3) water content in the sewer system. The averageconcentration of H2S in manholes and SCB were 2.39 ppm and 0.81 ppm, respectively. In contrast, their NH3counterparts were 1.86 ppm and 1.02 ppm, respectively. According to the contouring method made to identifyspatial distribution characteristics, of odorants a relatively lowland site D was expected to work as a significantemission source in light of the transportation patterns of a sewer system. Moreover, higher concentrations ofodorants were prevalent in the afternoon (as the prime time for commercial activities) relative to before noon. Ifconcentration data are converted into odor intensity, H2S was the predominant component exerting controls onthe odor pollution in these underground environments.
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집단극화와 컴퓨터 매개 커뮤니케이션에 대한 재고;사회적 존재감 관점 vs. 익명성 관점
서길수,임건신,심상민,서웅교 한국경영정보학회 2007 한국경영정보학회 학술대회논문집 Vol.2007 No.-
The objective of this paper is to contemplate a possible alternative to the examination, published as a research article in Information Systems Research(Sia et al. 2002), of the effects of communication cues, anonymity, and social presence on group polarization in computer-mediated communication(CMC) settings. Sia et al. introduced the concept of social presence to explain the effects of communication cues and anonymity on group polarization, but we believe that anonymity alone provides a clearer explanation of the results. This paper classifies levels of anonymity to provide possible explanations for Sia et a1. (2002)'s results and presents the results of a new experiment to confirm our explanation. We also want to emphasize that our comments are not intended to disparage the usefulness of social presence as a mediating variable to explain group polarization; our intention instead IS to encourage further investigation to better understand group polarization in CMC settings.
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