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대기오염이 실내·외 도시관광지 수요에 미치는 영향: 초미세먼지를 중심으로
김상혁 ( Kim Sang Hyuck ) 한국이벤트컨벤션학회 2021 이벤트 컨벤션 연구 Vol.17 No.2
Purpose-As increasing the negative impacts of the Particular Matter2.5(PM2.5), the research interest regarding the negative effects of the PM2.5 on tourism industry has been increased. Thus, the purpose of this study is to investigate the effects of PM2.5 on urban tourism demand by comparing the outdoor and indoor tourist attractions. Design, data, and methodology-In order to examine the effects of PM2.5 on the demand of urban tourist attractions, time series data analysis was conducted. The monthly data from Jan, 2014 to Dec, 2019 were gathered from secondary data base. The number of visitors to major tourist attractions in Seoul, Korea was used as a dependent variable and monthly PM2.5 concentration was used as an independent variable. For the control variables, precipitation, unemployment rate, travel expenditure per person, consumer price index(Lodging fee), the number of foreign tourists, and seasonal dummies were used. Result-The empirical results showed that PM2.5 are differently influenced on the demand of outdoor and indoor tourist attractions. First, PM2.5 has negative effects on outdoor tourist attraction. However, there are no significant effects on indoor tourist attraction. Conclusions-The results of this study support the prior studies that found there is a different effect on the demands between indoor and outdoor tourist attraction due to the air-pollution.
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서울시 구로구에서 COVID-19 발생 전ㆍ후 초미세먼지(PM2.5) 농도 변화에 따른 인구집단 노출평가
김동준(Dongjun Kim),민기홍(Gihong Min),최영태(Yongtae Choe),신준섭(Junshup Shin),우재민(Jaemin Woo),김동준(Dongjun Kim),신정현(Junghyun Shin),조만수(Mansu Jo),성경화(Kyeonghwa Sung),최윤형(Yoon-hyeong Choi),이채관(Chaekwan Lee),최길용(K 한국환경보건학회 2021 한국환경보건학회지 Vol.47 No.6
Background: The coronavirus disease (COVID-19) has caused changes in human activity, and these changes may possibly increase or decrease exposure to fine dust (PM2.5). Therefore, it is necessary to evaluate the exposure to PM2.5 in relation to the outbreak of COVID-19. Objectives: The purpose of this study was to compare and evaluate the exposure to PM2.5 concentrations by the variation of dynamic populations before and after the outbreak of COVID-19. Methods: This study evaluated exposure to PM2.5 concentrations by changes in the dynamic population distribution in Guro-gu, Seoul, before and after the outbreak of COVID-19 between Jan and Feb, 2020. Gurogu was divided into 2,204 scale standard grids of 100 m×100 m. Hourly PM2.5 concentrations were modeled by the inverse distance weight method using 24 sensor-based air monitoring instruments. Hourly dynamic population distribution was evaluated according to gender and age using mobile phone network data and time-activity patterns. Results: Compared to before, the population exposure to PM2.5 decreased after the outbreak of COVID-19. The concentration of PM2.5 after the outbreak of COVID-19 decreased by about 41% on average. The variation of dynamic population before and after the outbreak of COVID-19 decreased by about 18% on average. Conclusions: Comparing before and after the outbreak of COVID-19, the population exposures to PM2.5 decreased by about 40%. This can be explained to suggest that changes in people’s activity patterns due to the outbreak of COVID-19 resulted in a decrease in exposure to PM2.5.
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Life-cycle assessment of SO2 removal from flue gas using carbonate melt
김정환,이주원,조형태,안유찬 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.100 No.-
To determine the environmentally-benign process between the carbonate meltflue gas desulfurization(CMFGD) and the conventional process as the process of removing SO2 from theflue gas, in this paper, alife cycle assessment is applied using the data derived from the process simulation, including the heatintegration methodology. The CMFGD process has a 14.4%–26.8% lower environmental impact than theconventional process on all indicators. To achieve the economic and environmental benefits of theCMFGD process, a heat exchanger network (HEN) is introduced using HI to use the heat wasted in theCMFGD process. The HEN reduces environmental impacts (i.e., reduced CC by 24.46%, and PM by 49.96%),and economics (reduced total levelized cost by 0.8%) compared to the CMFGD process before HI. Theseresults suggest that the CMFGD process can replace the conventional methods to remove SO2 from theflue gas and can have environmental benefits by reducing CC and PM, significantly influencing theatmosphere.
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