• 한국신재생에너지학회:학술대회논문집
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• 2006.06a
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• pp.93-95
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• 2006

도시가스, LP 가스, 가솔린 등의 수증기 개질의 반응온도가 $700^{\circ}C$이상의 고온에서 이루어지는 것에 비해 DME 수증기 개질의 반응온도는 $400^{\circ}C$ 이하의 낮은 온도에서 이루진다는 점에서 우수하다. 또한 황 성분을 함유하지 않기 때문에 원료로부터 탈황 과정이 필요 없다. 특히 DME 수증기 개질의 경우 반응온도가 낮은 것과 개질 촉매가 일반적으로는 Cu 계 촉매이기 때문에 도시가스 등의 개질장치와 달리 CO 변성 장치가 불필요하다. 이 때문에 수소제조를 위해 개질장치가 소형화 가능하고 연료전지 자동차로의 탑재가 용이하여 가능성이 높다 개질장치가 소형화 가능한 것으로 메탄올의 수증기 개질이 있지만 메탄올은 독성이 있다는 점이 문제시되고 있다. 그 점에서 메탄올의 수증기 개질 보다 반응 온도는 다소 높게 되지만 독성 없는 DATE는 기존의 LP가스 인프라를 이용할 수 있는 ME는 특히 우수한 수소제조를 위한 원료이고 수소저장체로 사료된다. 본 연구에서는 가능성 높은 촉매를 사용하여 DME로부터 수소 전환율, 수소 생성속도와 양에 대한 실험실적 결과를 고찰하고자 수행하였다

• Life and Agrochemicals
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• s.263
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• pp.10-13
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• 2010

농업의 필요성과 정당성에 대한 치밀한 논리를 농업계에서 만들어야 한다. 이런 논리를 바탕으로 온 국민이 농업과 농촌의 중요성을 생활과 몸으로 느낄 수 있도록 도시민과 함께한 농업 농촌의 다양한 사례를 만들고, 함께 실천하면서 서로에게 감동을 줄 수 있어야 한다. 국민과 함께 하는 농업이란? 어려운 말이 필요없이 감성적, 이성적, 생활적으로 도시민과 농민이 함께 같은 방향으로 농업을 볼 수 있도록 만드는 것이다.

• Korean Architects
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• s.548
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• pp.22-27
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• 2014

박원순 서울시장 취임 이후 서울의 구석구석이 변하고 있다. 그 중 하나가 '상생의 주거공동체'이라는 목표에 걸맞은 실험적 형태의 주택들이 등장했다는 것이다. 거대한 개발논리에 의해 도시가 좌지우지되는 시대를 넘어 시민이 만들어가는 도시, 개인의 삶을 담는 그릇으로서의 건축, 공동체를 기반으로 거주자가 만들어가는 주택의 시대가 온 것이다. 그리고 그 중심에는 서울시 주택정책을 총괄하고 있는 진희선 실장이 있다. 진희선 실장을 만나 서울시의 도시재생과 주택정책에 대해 들어보았다.

• 프린팅코리아
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• s.41
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• pp.88-93
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• 2005

'어린이책의 다양성과 어린이 놀이 문화의 이해를 넓히자'는 취지 아래 출판도시문화재단에서 매년 주최해오고 있는 파주어린이책한마당이 '2005파주어린이책잔치'로 새롭게 이름을 바꾸고 지난 9월30일에서 10월9일까지 경기도 파주출판도시에서 개최됐다. 올해로 3회째를 맞이한 이 행사는 다양한 어린이책 전시와 체험프로그램을 펼치는 문화축제다. '책에 대해서 재미나게 배우자'는 주제하에 기획된 2005어린이책잔치는 '어린이 책-신나는 이미지 세계'라는 제목으로 문을 열었다. 이와 함께 파주출판도시에 입주한 출판사들은 저마다 준비해 온 책마을 집들이 행사를 통해 어린이 책에 관련된, 혹은 어린이 눈높이에 맞춘 다양한 이미지의 책잔치를 펼침으로써 많은 호응을 얻었다.

• Journal of the Korean Institute of Landscape Architecture
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• v.36 no.2
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• pp.24-31
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• 2008

Studies for demarcation of urban areas by ecological type have been developed, but the demarcation of urban areas by ecological perception is thus far dependent on artificial land use. Therefore, the purpose of this study is to find factors that account for the urban area ecosystems by surveying a variety of ecosystem factors. By land use type, the urban area of Gangdong District, Seoul was defined. Then ecological factors in each polygon were surveyed. Ecological factors are associated with energy use(building coverage ratio, floor area ratio and ground temperature), water circulation(biotope area factors and impermeable pave ratio) and biological diversity(bird appearance index and green area ratio). The correlation between each factor was analyzed. The results indicate that urban ground temperature is divided into three groups(high, middle and low) by the biotope area factor. The bird population is divided into two groups(abundant and scarce) by the green area ratio. Therefore, demarcating the urban areas by ecological type is applicable to the biotope area factor and green area ratio.

• Journal of the Korean Institute of Landscape Architecture
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• v.48 no.5
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• pp.67-79
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• 2020

Plans to mitigate overheating in urban areas requires the identification of the characteristics of the thermal environment of the city. The key information is the distribution of higher and lower temperatures (referred to as "hotspot" or "coldspot", respectively) in the city. This study aims to identify the areas within Jeonju City that are suffering from increasing land surface temperatures (LST) and the factors linked to such this phenomenon. To identify the hot and cold spots, Local Moran's I and Getis-Ord Gi^* were calculated for the LST based on 2017 images taken using the thermal band of the Landsat 8 satellite. Hotspot analysis revealed that hotspot regions, (the areas with a high concentration of Land Surface Temperature) are located in the old town area and in industrial districts. To figure out the factors linked to the hotspots, a correlation analysis, and a regression analysis taking into account environmental covariates including Normalized Difference Vegetation Index (NDVI) and land cover. The values of NDVI showed that it had the strongest effect on the lowering LSTs. The results of this study are expected to provide directions for urban thermal environment designing and policy development to mitigate the urban heat island effect in the future.

• Journal of Environmental Impact Assessment
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• v.24 no.2
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• pp.134-153
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• 2015

When making urban planning, it is important to understand climate effect caused by urban structural changes. Seoul city applies UPIS(Urban Plan Information System) which provides information on urban planning scenario. Technology for analyzing climate effect resulted from urban planning needs to developed by linking urban planning scenario provided by UPIS and climate analysis model, CAS(Climate Analysis Seoul). CAS develops for analyzing urban climate conditions to provide realistic information considering local air temperature and wind flows. Quantitative analyses conducted by CAS for the production, transportation, and stagnation of cold air, wind flow and thermal conditions by incorporating GIS analysis on land cover and elevation and meteorological analysis from MetPhoMod(Meteorology and atmospheric Photochemistry Meso-scale model). In order to reflect land cover and elevation of the latest information, CAS used to highly accurate raster data (1m) sourced from LiDAR survey and KOMPSAT-2(KOrea Multi-Purpose SATellite) satellite image(4m). For more realistic representation of land surface characteristic, DSM(Digital Surface Model) and DTM(Digital Terrain Model) data used as an input data for CFD(Computational Fluid Dynamics) model. Eight inflow directions considered to investigate the change of flow pattern, wind speed according to reconstruction and change of thermal environment by connecting green area formation. Also, MetPhoMod in CAS data used to consider realistic weather condition. The result show that wind corridors change due to reconstruction. As a whole surface temperature around target area decreases due to connecting green area formation. CFD model coupled with CAS is possible to evaluate the wind corridor and heat environment before/after reconstruction and connecting green area formation. In This study, analysis of climate impact before and after created the green area, which is part of 'Connecting green network across the north and south in Seoul' plan, one of the '2020 Seoul master plan'.

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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• 2019.08a
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• pp.252-252
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• 2019

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.10
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• pp.806-816
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• 2017

This study aims to offer effective policies for managing local temperatures and reducing the heat island effect by identifying elements that affect local temperatures. The three elements of natural environment, land use, and land coverage were first selected, and then control factors were applied, including season, weather, and measurement units for wind speed. In order to analyze these factors' relations to summer temperatures, an integrated model was developed, and an analysis was conducted of the urban heat island reduction effect of elements impacting local temperatures. The analysis used nationwide weather system (AWS) data from July and August 2007 and 2011-2016, land coverage data provided by the Ministry of Environment, and land use area data from local governments after rearranging them based upon their falling within a 500-meter radius ($0.79km^2$) of AWS measuring points. The study results show that the natural environment, land use, and land coverage all have a relation to changes in local temperatures. Natural elements have the greatest impact, and land use has the lowest. The results could provide basic data for establishing more effective policies to mitigate the heat island effect and strategies for enhancing the sustainability of cities.

• Journal of the Korean Regional Science Association
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• v.35 no.4
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• pp.61-73
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• 2019

Urban development and densification have led to the Urban Heat Island Effect, in which the temperature of urban space is higher than the surrounding areas, and the intensity is increasing with climate change. In addition, when the city's air temperature rises in summer, low-income, elderly population, and socially vulnerable people who have health problems lack the ability to cope with the elevated heat environment. Therefore, this study aimed to identify the urban heat island area of Seoul through Hotspot analysis, which is a spatial statistics technique, and explored physical environments, demographic and socioeconomic characteristics of urban heat island effect areas using logistic regression models. This study performed urban heat island hotspot analysis using the average air temperatures of the 423 administrative dongs in Seoul. Analysis results identified that the urban heat islands were concentrated in Jung-gu, Jongno-gu, Yongsan-gu, and Yeongdeungpo-gu. Logistic regression analysis results indicated that urban heat island areas of Seoul were affected by residential floor area ratio, commercial facility floor area ratio, overall floor area ratio, impervious surface ratio, and normalized difference vegetation index(NDVI). In addition, as a result of analyzing the vulnerable area of thermal environment considering the demographic and socioeconomic characteristics of the heat island area, urban heat island areas of Seoul were significantly associated with the proportion of low-income elderly living alone. The result of this study provided useful insights for urban thermal environmental design and policy development that could improve the thermal environment for the socially disadvantaged urban population.