• Title/Summary/Keyword: urban studies

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Thermal Infrared Remote Sensing Data Utilization for Urban Heat Island and Urban Planning Studies

  • Lee, Hye Kyung
    • Journal of KIBIM
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    • v.7 no.2
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    • pp.36-43
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    • 2017
  • Population growth and rapid urbanization has been converting large amounts of rural vegetation into urbanized areas. This human induced change has increased temperature in urban areas in comparison to adjacent rural regions. Various studies regarding to urban heat island have been conducted in different disciplines in order to analyze the environmental issue. Especially, different types of thermal infrared remote sensing data are applied to urban heat island research. This article reviews research focusing on thermal infrared remote sensing for urban heat island and urban planning studies. Seven studies of analyses for the relationships between urban heat island and other dependent indicators in urban planning discipline are reviewed. Despite of different types of thermal infrared remote sensing data, units of analysis, land use and land cover, and other dependent variable, each study results in meaningful outputs which can be implemented in urban planning strategies. As the application of thermal infrared remote sensing data is critical to measure urban heat island, it is important to understand its advantages and disadvantages for better analyses of urban heat island based on this review. Despite of its limitations - spatial resolution, overpass time, and revisiting cycle, it is meaningful to conduct future research on urban heat island with thermal infrared remote sensing data as well as its application to urban planning disciplines. Based on the results from this review, future research with remotely sensed data of urban heat island and urban planning could be modified and better results and mitigation strategies could be developed.

High-Rise Urban Form and Environmental Performance - An Overview on Integrated Approaches to Urban Design for a Sustainable High-Rise Urban Future

  • Yang, Feng
    • International Journal of High-Rise Buildings
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    • v.5 no.2
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    • pp.87-94
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    • 2016
  • High-rise as a building typology is gaining popularity in Asian mega-cities, due to its advantages in increasing volumetric density with limited land resources. Numerous factors contribute to the formation of high-rise urban form, from economical and institutional, environmental to socio-political. Environmental concerns over the impact of rapid urbanization in developing economies demand new thought on the link between urban environment and urban form. Outdoor and indoor climate, pedestrian comfort, and building energy consumption are all related to and impacted by urban form and building morphology. There are many studies and practices on designing individual "green" high-rise buildings, but far fewer studies on designing high-rise building clusters from the perspective of environmental performance optimization.. This paper focuses on the environmental perspective, and its correlation with the evolution of the high-rise urban form. Previous studies on urban morphology in terms of environmental and energy performance are reviewed. Studies on "parameterizing" urban morphology to estimate its environmental performance are reviewed, and the possible urban design implications of the study are demonstrated in by the author, by way of a microclimate map of the iconic Shanghai Xiao Lujiazui CBD. The study formulates the best-practice design guidelines for creating walkable and comfortable outdoor space in a high-rise urban setting, including proper sizing of street blocks and building footprint, provision of shading, and facilitating urban ventilation.

Selection of Particulate Matter Observation Measurement Sites in Urban Forest Using Wind Analysis (바람장 분석을 통한 도시숲 미세먼지 관측 장비 설치 지점 선정)

  • Lee, Ahreum;Jeong, Su-Jong;Park, Chan-Ryul;Park, Hoonyoung;Yoon, Jongmin;Son, Junghoon;Bae, Yeon
    • Atmosphere
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    • v.29 no.5
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    • pp.689-698
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    • 2019
  • Air pollution in urban areas has become a serious problem in the recent years. Especially, high concentrations of particulate matter (PM) cause negative effects on human health. Several studies suggest urban forest as a tool for improving air quality because of the capability of forests in reducing PM concentrations through deposition and adsorption using leaf area. For this reason, the National Institute of Forest Science plans to install in-situ observation stations for PM and biogenic volatile organic compounds (BVOCs) on a national scale to verify the net effect of forests on urban air pollution. To measure the quantitative change of PM concentrations due to the urban forest, stations should be located within and outside the forest area with respect to atmospheric circulation. In this study, we analyze the wind direction at the potential measurement sites to assess suitable locations for detecting the effect of urban forests on air quality in five cities (i.e. Gwangju, Daegu, Busan, Incheon, and Ilsan). This technical note suggests effective locations of in-situ measurements by considering main wind direction in the five cities of this study. A measurement station network created in the future based on the selected locations will allow quantitative measurements of PM concentration and BVOCs emitted from the urban forest and help provide a comprehensive understanding of the forest capabilities of reducing air pollution.

An Analysis of Spatial Characteristics in Urban Residential Area Using GIS - Focused on the Land Price according to Parcel Attributes - (GIS를 활용한 도시주거지 공간특성 분석 -토지속성에 따른 지가분포를 중심으로-)

  • 이희원
    • Spatial Information Research
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    • v.11 no.3
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    • pp.301-325
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    • 2003
  • Urban residential area, one of the main subjects of urban and architectural studies, can be analyzed accurately and rapidly with CIS. (Geographic Information System) And the applications of GIS in urban studies are too macro to be explained in architectural terms and the ones in architectural studies are not so much active rather be used as a secondary means. So the studies in urban-architectural scale are very useful in many ways. This study explores urban-architectural possibilities of analytic capabilities of GIS through the analysis of spatial characteristics of residential area in terms of land price according to parcel attributes. It is found, firstly, that the parcel attributes have relations with land price and its distribution patterns. Secondly, it is verified that the visualization capability of GIS can be a very useful method of analysis through user-interface effects in urban-architectural scaled analysis.

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A Study on the Attractive Items of Hanok in Urban Area focused on Preceding Studies (선행연구에 나타난 도시한옥의 매력 요소에 관한 연구)

  • Min, Sae-Rom;Kim, Tai-Young
    • Journal of the Korean Institute of Rural Architecture
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    • v.14 no.3
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    • pp.61-68
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    • 2012
  • The purpose of this paper is to derive attractive items of 'Hanok' in order to preserve 'Hanok' in urban area, focused on the 13 preceding studies which have got in respect of image, satisfaction, preference, awareness and advantage of 'Hanok' in urban area revolved around the latest studies. This study is analysis of questionnaire items and results of 13 preceding studies. And attractive items are classified with general and overall survey items, advantage of 'Hanok' in urban area, and image of Hanok-density urban area. These can also be classified with 5 items which are space, health, material, form, and image of 'Hanok' in urban area. As a result, Space items are composed with 'use of a space', 'cosiness', 'garden' and 'floor and ondol(korean floor heating system). Health items are composed with 'lighting and ventialtion', 'a sense of the season' and 'natural material'. Material items are composed with 'natural beauty', 'wooden', 'changhoji(traditional Korean paper made from mulberry bark for doors and windows) and hanji(traditional Korean paper handmade from mulberry trees), 'rafter' and 'new materials'. Form items are composed with 'attractive appearance', 'simply decoration' and 'traditional elements'. Image items are composed with 'crowding', 'traditionality and historicity', 'dichroism' and 'warmth'.

Influence of environmental variables, inner control and communication with parents on adolescent's stress -compared rural with urban- (환경변인 및 내적통제력, 부모와의 의사소통이 청소년의 스트레스에 미치는 영향 -농촌, 도시비교-)

  • 백양희
    • Journal of the Korean Home Economics Association
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    • v.35 no.2
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    • pp.33-47
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    • 1997
  • The purpose of the study is to examine the differences between rural and urban in the factors and the level of stress in adolescent, inner control and communication with parents. Also, It is to research the influence of environmental variables, inner control and communication with parents on adolescent's stress in sides of rural and urban. Therefore, I provide needed data in instructing students. For the data set, academic high school students in second grade in a town for rural and Su-Seung gu, Dal-Sugu, chung gu in Dae-gu for urban were chosen. The data were analyzed with the frequency, percentage, factor analysis Mean, S.D, reliability, t-test, regression in use of Spss PC+ Program. The main results are as follow. First, for rural students, stress level is displayed studies, future0affair, life-attitude, companions, self-assurance and home life in order by lower sphere. For urban students, it is displayed future-affair, studies, life-attitude, companions, self-assurance and home life in order by lower shpere. In case of rural "I don't know effective study method" is highly displayed by factors. In case of urban. "I am tired of a competitive life" is highly displayed. The mean of stress level is 3.22 for rural and 3.07 for urban. The differences between rural and urban are showed in self-assurance, studies and companions. Finally when we see the stress generally the stress level is higher in rural high school students than in urban high school students. Second, rural students are lower displayed than urban students in inner control and communication with parents. There is no difference urban students in inner control and communication with parents. There is no difference in communication with a mother. third, influential variables on stress level are inner control, communication with parents, satisfaction with companions and school life as environmental variables in sides of rural and urban. Physical condition is added for rural and sex for urban Finally we get the result that stress level is high in low inner control, poor communication with parents, bad companions and unsatisfied school life for both rural and urban. Bad physical condition for rural and female for urban are added.

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Analysis of the Distinguishing Characteristics of Small Towns in Korea (소도읍의 유형별 내부기능 특성 분석)

  • Yuh, Hong-Koo;Ji, Nam-Seok;Kim, Jin-Young
    • Journal of Korean Society of Rural Planning
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    • v.13 no.4
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    • pp.9-22
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    • 2007
  • With the establishment of municipalities, public interest in small towns in Korea has been on the rise. To initiate an effective study and suggest subsequent policies for small towns, it is necessary to analyze and discuss substantive issues based on specific conditions of these small towns. The primary objective of this paper is to categorize small towns into types and to analyze the peculiarities and differences of their internal factors. The focus of this research is to determine the general characteristics of the classified towns and to suggest specific revitalization and specialized studies about them. In the main analysis of this paper, 39 small towns are divided into sets according to urban rank, conditions of location, and size of the population in the central site. Furthermore, distinctions of the divided towns are analyzed using three constituents for urban organization, including populations, activities, and facilities/land. From the research results, it was determined that there is a difference between small town types, according to population, land cost, and urban activities, based upon the urban rank and size of the population in the central site. Therefore, this paper concludes it is necessary to conduct further studies on time series analysis regarding the peculiarity changes of the types, and to complement the variables for future related studies.

Land Use Management Issues of the Urban Fringe in the UK

  • Kim, Soo-Bong;Kim, Yong-Bum;Jung, Eung-Ho
    • Journal of Environmental Science International
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    • v.12 no.5
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    • pp.511-519
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    • 2003
  • It is difficult to define the urban fringe using a specific geographical designation in the physical planning system because the existence of the urban fringe is certainly not equal in all directions from the inner urban area to the rural area, and is often a discontinuous spatial phenomenon from the inner fringe to the urban shadow. Nevertheless, the urban fringe raises land use management issues which stem from its own peculiar set of land use characteristics. For example, in the UK, how the public can enjoy access to the countryside in the urban fringe while at the same time recognising and acknowledging the importance of landowners and farmers property rights\ulcorner how can a poor quality environment and degraded landscape be improved aesthetically and physically to meet the multiple recreational needs of a diverse population when local authorities are confronted with limited ability to fund and acquire land for these purposes\ulcorner The challenge of addressing these land use management issues necessitates approaches which build a coalition of interest groups and public and non-government organizations in the management processes in order to improve the physical, economic and social environments and facilitate the management mechanism.