• 제목/요약/키워드: URBAN AREA

검색결과 6,529건 처리시간 0.034초

Development of calculating daily maximum ground surface temperature depending on fluctuations of impermeable and green area ratio by urban land cover types (도시 토지피복별 불투수면적률과 녹지면적률에 따른 지표면 일최고온도 변화량 산정방법)

  • Kim, Youngran;Hwang, Seonghwan
    • Journal of Korean Society of Water and Wastewater
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    • 제35권2호
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    • pp.163-174
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    • 2021
  • Heatwaves are one of the most common phenomena originating from changes in the urban thermal environment. They are caused mainly by the evapotranspiration decrease of surface impermeable areas from increases in temperature and reflected heat, leading to a dry urban environment that can deteriorate aspects of everyday life. This study aimed to calculate daily maximum ground surface temperature affecting heatwaves, to quantify the effects of urban thermal environment control through water cycle restoration while validating its feasibility. The maximum surface temperature regression equation according to the impermeable area ratios of urban land cover types was derived. The estimated values from daily maximum ground surface temperature regression equation were compared with actual measured values to validate the calculation method's feasibility. The land cover classification and derivation of specific parameters were conducted by classifying land cover into buildings, roads, rivers, and lands. Detailed parameters were classified by the river area ratio, land impermeable area ratio, and green area ratio of each land-cover type, with the exception of the rivers, to derive the maximum surface temperature regression equation of each land cover type. The regression equation feasibility assessment showed that the estimated maximum surface temperature values were within the level of significance. The maximum surface temperature decreased by 0.0450℃ when the green area ratio increased by 1% and increased by 0.0321℃ when the impermeable area ratio increased by 1%. It was determined that the surface reduction effect through increases in the green area ratio was 29% higher than the increasing effect of surface temperature due to the impermeable land ratio.

Flood Hazard Management Using Mobile GIS (모바일 GIS에 의한 홍수재해관리)

  • 강택순;강성봉;손홍규;유환희
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 한국측량학회 2003년도 추계학술발표회 논문집
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    • pp.297-302
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    • 2003
  • Recently, Flood hazard has been increased frequently in urban area by rainfall and Typhoon. To manage flood hazard effectively, it needs to construction of flood information management system. Especially, run-off by flood in urban area must be considered not only surface outflow by topographic gradient and elevation but also conduits outflow along conduit network. This paper suggests the flood hazard management system for analyzing flood outflow in urban area using conduits outflow simulation by ILLUDAS model and providing quickly flood hazard information using WebGIS and MobileGIS.

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A Numerical Simulation of Air Pollutant Concentration Considering Land and Sea Breeze in Ulsan Area (해륙풍을 고려한 울산지역 대기오염물질농도의 수치모의)

  • 이화운;원경미;정우식;오은주;김민선;도우곤
    • Journal of Environmental Science International
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    • 제11권9호
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    • pp.933-943
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    • 2002
  • The urban pollution if affected by local environmental, so it is necessary to consider area characteristics such as emission source and meteorological phenomena, in studying urban air pollution. Ulsan is laocated on south-east coast and has many industrial facilities, so many people have concerned about air pollution. This study contain conducting numerical simulation of air pollutant concentration considered land and sea breeze in Ulsan area with the numerical model.

Urban Heat Islands in Seoul during the Summertime of 2003 (2003년 여름철 서울의 도시열섬)

  • Kim Yeon-Hui;Eom Hyang-Hui;O Seong-Nam;Kim Sang-Baek
    • Proceedings of the Korea Air Pollution Research Association Conference
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    • 한국대기환경학회 2003년도 추계학술대회 논문집
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    • pp.503-503
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    • 2003
  • Urban heat islands related with Cheongyecheon restoration in Seoul metropolitan area for the summertime of 2003. To investigate the spatial and temporal structure of the urban heat island in Seoul, temperature data measured at 32 automatic weather stations (AWSs) in the Seoul metropolitan area and 12 additional stations operated by the portable device for the measurement of temperature and relative humidity in the Cheonggyecheon area. (omitted)

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A Study on the Relationship between Land Cover Type and Urban Temperature - focused on Gimhae city - (토지피복유형 특성과 도시 온도의 관계 분석 - 김해시를 대상으로 -)

  • SONG, Bong-Geun;PARK, Kyung-Hun
    • Journal of the Korean Association of Geographic Information Studies
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    • 제22권2호
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    • pp.65-81
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    • 2019
  • This study analyzed the relationship of land cover type, urban temperature in Gimhae city, Gyeongsangnam-do, South Korea. Date were used for land cover map, MODIS LST, and detailed temperature data on the Korean Peninsula based on RCP between 2000 and 2010. The correlation between urban area and surface temperature was 0.417, 0.512 for agricultural area and -0.607 for forest area. The correlation between surface temperature and air temperature was 0.301. The relationship with air temperature was analyzed as 0.275 for urban area, agriculture area 0.226, forest area 0.350. Urban and agricultural areas showed increased surface and air temperature as the area increased, while forest areas showed opposite improvements. In structural equation models, urban and agricultural areas had direct effects on the rise of surface temperature, whle forest areas had direct effects on the reduction of air temperature. In the future, it is necessary to use measured temperature data near the surface to understand the relationship between surface temperature and temperature according to the changes in spatial characteristics, which will prepare measures for urban heat island mitigation at the level of urban and environmental planning.

A Study on the Utilization of Modern for Sustainable Conservation of Urban Traditional House - Focus on the Change the Interior Space - (도시형한옥의 지속가능한 보전을 위한 현대적 활용방안 연구 - 내부공간의 변화를 중심으로 -)

  • Ryu, In-Hye;Kim, Kai-Chun
    • Korean Institute of Interior Design Journal
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    • 제21권5호
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    • pp.153-161
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    • 2012
  • The purposes of this study were to reevaluate urban traditional houses and to propose direction for the conservation and utilization of urban traditional houses in a way of maintaining historical landscape rather than the value of urban traditional houses as components in expanded urban structure. For these purposes, we identified the characteristics of conservation and utilization of urban traditional houses by representative cases and analyzing them exhaustively, and suggested problems in the cinservation and utilization of traditional houses and solution for them. The current conservation system for Urban Traditional House in the Bukchon area is applied to non-residential Urban Traditional House differently according to the owner's consciousness of conservation because there is no support system for non-residential Urban Traditional House. Accordingly, there should be standardized criteria to maintain the landscape of the Bukchon area in terms of beauty formed by the elevation of Urban Traditional House and the continuity of roofs while accommodating various functions. As in total conservation or partial conservation, the interior remodeling of individual houses may be allowed but the three-dimensional external appearance composed of the outer walls, fences and roofs of Korean-style houses should be repaired and improved in a way of maintaining the image. In order to utilize Urban Traditional House in the Bukchon area, plans should be made in consideration of its location, historicity and tradition. We may expect the utilization of traditional cultural facilities and their surrounding areas as alternative cultural spaces. Such use of individual Urban Traditional House should be extended by linearly and areally and suggest the direction of conservation and utilization.

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Urban Growth of Chuncheon City Observed by Landsat Satellite Images

  • Ahn, Young-Jin;Lee, Hoon-Yol
    • Proceedings of the KSRS Conference
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    • 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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    • pp.411-414
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    • 2005
  • In this study, 8 Landsat(TM/ETM+) satellite images acquired from 1984 to 2002 were used to investigate the growth of Chuncheon city, Kangwon-do, Korea. The images were geocoded and classified using training set collected from field survey. Four land-use types were classified such as urban area, green zone, agricultural land and water body. It also showed rapid increase of urban area in the past two decades from 1166ha in 1984 to 3358ha in 2002. About 2182ha of agricultural land and green zone have been changed to urban area. Agricultural land was newly formed from the green zone.

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Comparative Analysis of Urban and Rural Children′s View of Outdoor Environment (도시와 농촌아동의 옥외환경관 비교 분석)

  • 김용수;정순진
    • Journal of the Korean Institute of Landscape Architecture
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    • 제18권2호
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    • pp.67-78
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    • 1990
  • Though children are imperfect and immature in themselves, they have their own merits and characteristics, so that they should not be appreciated by the adult's own viewpoints. The needs of a child are obviously different from those of an adolescent or an adult. Therfore we should understand their mentality and psychology in order to give desirable outdoor space to them. In this study, children's view of outdoor environment was studied by analyzing the painting of object elementary school students of one and the other urbanizations and schooling years and different schooling years also. The data were drawn from 182 children of two different urbanization levels. The urbanization level was standardized with urban area(Taegu), and rural area(Jukjang - myon). According to the research, more area of garden was exprssed In paintings of urban children. House was expressed vy far more frequently in paintings of rural childrin than in those of urban dwellers. The children of urban expressed recreation facilities more frequently within their garden. It reflected the limitation of play space for them, As a result, the preference fur outdoor 7pare of children should by considered in Planning space for them.

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A Study on the Spatial Composition and Area Distribution of recent Urban Health Centers - Focused on case studies in Gyunggi-Do - (최근 도시보건소의 공간구성과 면적배분의 경향에 관한 연구 - 경기도의 사례를 중심으로 -)

  • Kim, Jin-Young;Park, Jae-Seung
    • Journal of The Korea Institute of Healthcare Architecture
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    • 제12권2호
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    • pp.51-58
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    • 2006
  • This study is about the Spatial Composition and Area Distribution in the Urban Health Centers. The purpose of this study is to suggest the basic direction of urban health center plans which has urban characters according to the changes of public health systems and environments. The methods of this research was executed by surveys of documents and plans and field observations. The targets of this study are public health centers that have been constructed since 2000 and are constructing until now and investigated this facilities.

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Strategies to Activate Primary Health Care for Low-income Population in Urban Area (도시 저소득층주민을 위한 일차보건의료 활성화 방안)

  • Han Myung Hwa
    • Journal of Korean Public Health Nursing
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    • 제13권1호
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    • pp.77-87
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    • 1999
  • Poverty directly affects health and well-being, The poor population has a higher rate of chronics illness. higher infant morbidity and motality rates. shorter life expectancy. more complex health problems. and greater physical limitations resulting from chronic disease. In order to activate primary health care for the poverty in urban area the following measures should be taken : 1. Health center must be expended or establish subhealth center. 2. Health center must monitor neighbour's workplace's health management for their working population. 3. Health centers must do active home visiting nursing care for the urban-poor. 4. Health center must carry out flexible problem-centered practice according to the area. 5. For the urban-poor's health care must have organization of the health center & practice according to community's characteristics. 6. Public health care must be closely connected with welfare. 7. For the health care of the urban-poor must demand active community participation. 8. Health center is closely connected with Community hospital. 9. Active management of public health resource system is demanded.

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