• Title/Summary/Keyword: Urban type

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Numerical Simulation of Effect of Urban Land-use Type and Anthropogenic Heat on Wind Field (지표면 변화와 인공열이 바람장에 미치는 영향에 관한 수치 시뮬레이션)

  • 홍정혜;김유근
    • Journal of Korean Society for Atmospheric Environment
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    • v.16 no.5
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    • pp.511-520
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    • 2000
  • The urban atmosphere is characterized by th difference in surface and atmospheric environment between urban and more natural area. To investigate th climatic effect of land use type and anthropogenic heat of urban on wind field, numerical simulations were carried out under typical summer synoptic condition. The wind model PNU_MCM(Pusan National University Mesoscale Circulation Model) is based on the three-dimensional Boussinesq equations, taking into account the hydrostatic assumption . Since lane-use differs over every subdivision on Pusan the surface energy budget model includes sub0grid parameterization scheme which can calculate the total heat flux over a grid surface composed of different surfaces. The simulated surface wind agrees well with the observed value, and average over 6 days which represent typical summer lan-sea breeze days, August 1998, i.e. negligible gradient winds and almost clear skies. Urbanization makes sea-breeze enhance at day and reduce land-breeze at night. The results show that contribution of land-use type is much larger than that of anthropogenic heat in Pusan.

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Urban Housewives' Life Style (도시주부의 라이프 스타일)

  • 임정빈;임혜경
    • Journal of Families and Better Life
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    • v.6 no.1
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    • pp.223-249
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    • 1988
  • The aim of this study is to classify the life styles of urban housewives, to see their correlation with demographic and socioeconomic variables, and finally to provide some useful for their ideal home management. This study has been based on a questionnaire on the demographic characteristics of housewives, and their life styles. The selected samples were 650 and 514 of them were analyzed. The data wee analyzed by factor analysis, cluster analysis, ANOVA, Duncan test and X2-test. As a result of factor and cluster analyses of 64 items th life styles of urban housewives were classified into 5 types; 'conservative stagnant type', 'sound and thrifty type', 'passive stagnant type', realistic and stable type', modern and evolutional type', The life styles of the respondents showed significant differences by the variables of age , family life cycles, the number of family members, the number of children, family type, education, occupation, income, the type of housing, and religion.

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A Study on Public Pension Payments of Urban Households - Single Earner Households and Dual Earners Households - (도시가구의 연금에 관한 연구 -홀벌이가구와 맞벌이가구의 공적연금을 중심으로 -)

  • Kim Soon-Mi
    • Journal of the Korean Home Economics Association
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    • v.42 no.11
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    • pp.205-222
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    • 2004
  • The purposes of this study were to examine urban household's monthly expenses for public pension and to analyze the contributing factors. Data for this study were from the 2002 Urban Household Survey and consisted of a sample of 21,093 urban households. Statistics used for the analysis were frequencies, means, ANOVA and multiple regression analysis. The major findings were as follows ; First, the average urban household monthly payment for the public pension was 104,036 won, consisting of 102,757 won for single earner households and 106,014 won for dual earner households. Second, the highest expenses for monthly public pension was urban households, followed by male household head(HH), HH's age from 41-50 years, HH's educational level was college, HH's job was public servant, family didn't live in Seoul, family w3s an extended family and family owned the house. Third, the significant factors affecting the urban household's monthly public pension were HH's gender, age, educational level, type of job, region, type of family, number of children, type of earner, monthly total income, increase of asset in a month and house ownership.

The Image and Visual Preference for Urban Setting : Focused on Outdoor Spaces of Urban Office Buildings (도시환경의 이미지 및 시각적 선호도에 관한 연구 -도시 업무용 건물의 외부공간을 중심으로-)

  • 이선화;김유일;서주환
    • Journal of the Korean Institute of Landscape Architecture
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    • v.26 no.3
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    • pp.134-142
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    • 1998
  • THe purpose of this study is to suggest the major determinants of visual preference in the outdoor spaces of urban office buildings. For this, the spatial image was analyzed by the factor analysis algorithm. The level of visual preferences was measured by a slide simulation test, and these data were analyzed by the multiple regressioni. The result of this study can be summarized as follows; Factors covering the spatial image were found to be 'mystery','changeability','coherence' and 'legibility'. T.V. was obtained as 58.4%. Outdoor spaces of urban office buildings were classified into four groups by the multi dimensional scaling method. As for the analysis of imageability in each spatial type, the factor scores of measuring high values were different for all types. Type II, IV obtained higher rank of visual preference and type III, I obtained lower. For all types, the factors of visual preference were found to be 'mystery','changeability','coherence' and 'legibility'. The visual preference determinants of urban setting focused on outdoor spaces of urban office buildings may be the major factors which must be considered in planning and designing as the functional basis for the quantitative analysis.

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A Study on the 'Theater of the World' and the 'Roman Forum' in Analogical Aspect (유추적 관점에서 본 '포로 로마노'와 알도로시의 '세계극장'에 대한 고찰)

  • Park, Sang-Seo;Lee, Dae-Jun
    • Journal of architectural history
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    • v.17 no.2
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    • pp.67-81
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    • 2008
  • Aldo Rossi explained Roman Forum as a significant urban artifact, because Roman Forum analogically showed not only an image of Roman Empire but also a figure of primitive design for its region. Thus the comparison and analysis between characteristics of Aldo Rossi's architectural works which are based on the theory of 'Analogical city' and the forums, the urban artifacts, was proceeded in this study. Consequently, it was discovered that Aldo Rossi had used his analogical thinking from the forum for his architectural languages such as gable roofs, square windows with depth, columns and so on. His analogical use of organizing spaces, such as courtyard type and pillar corridor type, has also shown that their types came from forum spaces. His analogical aspects of the forum: a space where urban images are analogically formed; were expressed in the 'Theater of Science' with the urban architecture form as the actor and the Theatre as the stage for analogical urban performances. Nevertheless, the expression of primitive design which divides the Roman Forum from other forums was actualized in 'the Theater of the World'. He not only analogically used types from Roman Forum in architectural design but also used boat in Water space, which decided the lifestyle and culture of Venice even before the civilization, to express the primitive design of Venice. Consequently, Aldo Rossi, by aiming the severance from the tradition, provided the possibility of explaining the newest modem type within the historical meaning by forming type which finds its continuance in history through 'the Theater of the World' and through analogical thinking along with the level of modern culture, to our urban architectural atmosphere that has lost its historical meanings.

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Analysis of the Effects of Advection and Urban Fraction on Urban Heat Island Intensity using Unified Model for Seoul Metropolitan Area, Korea (통합모델을 활용한 이류와 도시비율이 서울 수도권 지역의 도시열섬강도에 미치는 영향 분석)

  • Hong, Seon-Ok;Kim, Do-Hyoung;Byon, Jae-Young;Park, HyangSuk;Ha, Jong-Chul
    • Atmosphere
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    • v.29 no.4
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    • pp.381-390
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    • 2019
  • This study investigates the impacts of urban land-use fraction and temperature advection on the urban heat island intensity over the Seoul metropolitan area using the UM (Unified Model) with the MORUSES (Met Office Reading Urban Surface Exchange Scheme) during the heat wave over the region from 2 to 8, August 2016. Two simulations are performed with two different land-use type, the urban (urban simulation) and the urban surfaces replaced with grass (rural simulation), in order to calculate the urban heat island intensity defined as the 1.5-m temperature difference between the urban and the rural simulations. The land-use type for the urban simulation is obtained from Korea Ministry of Environment (2007) land-use data after it is converted into the types used in the UM. It is found that the urban heat island intensity over high urban-fraction regions in the metropolitan area is as large as 1℃ in daytime and 3.2℃ in nighttime, i.e., the effects of urban heat island is much larger for night than day. It is also found that the magnitude of urban heat island intensity increases linearly with urban land-use fraction. Spatially, the estimated the urban heat island intensities are systematically larger in the downwind regions of the metropolitan area than in the upwind area due to the effects of temperature advection. Results of this study indicate that urban surface fraction in the city area and temperature advection play a key role in determining the spatial distribution and magnitude of urban heat island intensity.

Urban Housewives' Expenditure Behavior Type (도시주부의 지출행동 유형)

  • Cho, Young-Hee
    • Korean Journal of Human Ecology
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    • v.3 no.1
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    • pp.33-42
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    • 1994
  • The main objective of this study was to find urban housewives' expenditure behavior type. For this objective 4 dimensions of income expenditure behavior were classified with factor analysis and correlation coefficient and then cluster analysis was implemented. Subjects were housewives living in Seoul. As a result, three income expenditure behavior type were defined. They were type of high interested in income expenditure, time oriented type, and money oriented type.

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A Study on Sustainable Development of Urban Area in Green Belt -Focused on City Development of Sustainable Compact City Method (개발제한구역 내 도시의 지속가능한 개발을 위한 연구 -지속가능한 컴팩트시티형 도시개발을 중심으로)

  • Chung, Jae-Yong;Oh, Min-Jun
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.12
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    • pp.5917-5930
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    • 2011
  • This study suggests Compact City type urban development strategies and planning elements with the purpose of sustainable development. The suggestions are based on analysis of the development projects promoted in the cities within Green-Belt. Following are the findings of this study: First, in the late 20th century, Compact-City has been suggested as standard of sustainable urban development in the developed countries, and this promoted urban development plans were presented in detail. Second, The development plans are suggested plan elements by urban environment, space, community, and management. It was classified as an applicable element in Green belt and Compact City type. Finally, after comparing several city development projects (Gwacheon, Uiwang, Hanam), differences and Limitations between the Compact-City type urban development. Considering analysis of this study, urban development projects in Green Belt should be prepared to sustainable Compact city type urban development.

Adaptation Types of Urban Tissue in Ipjeong-dong Area, Seoul (서울 입정동 일대 도시조직의 적응 유형)

  • Woo, Don-Son;Cho, Yun-O
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.34 no.7
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    • pp.99-106
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    • 2018
  • The purpose of this study is to examine adaptation types of urban tissue in Ipjeong-dong area, Seoul. Ipjeong-dong area has urban tissue those were made during Joseon dynasty and this is remaining even in the present time. This area was originally urban hanok residential districts till late 1950s. However, it has changed into machinery manufacture business area after demolition of Cheonggyechon shantytown. After several workshops and stores moved in this area, manufacturer and merchants required for more spaces due to lack of room for machinery. To place more workshops in the block, lot alteration were happened and accessibility to workshops inside the block were required. Adaptive road network which is main form of adaptative urban tissue were made to adapt in this kind of poor urban condition. To research about adaptive urban tissue making, distribution were explored and comparison tasks between various cadastral map of 1940, 1964, 1970s and 2017 were conducted. From these tasks, certain types of adaptive urban tissues and characteristics of these elements were found. First of all, forms of adaptive road depend on the surrounded environment. Connecting internal building corridor with original road system is categorized as Type A. Altering a portion of the buildings to make adaptive roads is categorized as Type B. Second, there were two types of formation of adaptive road. Type 1 is for adaptive road which is independent gesture from original road network. Type 2 is for adaptive road which is altering the form of original road network by lengthening or connecting two different dead-end roads.

A Comparative Study on Spatial Characteristics of Parcel by Type of Building Construction (건축행위 유형별 필지의 공간적 특성 비교연구)

  • Kim, Kijung;Kim, Dongjun;Lee, Seungil
    • Journal of Korea Planning Association
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    • v.54 no.6
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    • pp.27-42
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    • 2019
  • The purpose of this study is to identify the spatial characteristics of the parcels in which building construction occurred. In recent, urban development patterns in Korea have been shifting from the past. Small-scale development at parcel level is becoming more important in accordance with individual location needs in the low-growth era unlike public lead large-scale urban development in the rapid growth period. Therefore, it is necessary to study the spatial characteristics of the parcels where small-scale development takes place for future urban development management. This study used the chi square independence test, t-test and ANOVA (analysis of variance) to identify the spatial characteristics. The results of the study show that there is a spatial characteristics difference not only between building construction and non-building construction parcels, but also by type of building construction. The parcel where the building construction occurred have a higher proportion in detached house, major commercial districts, district unit planning areas, and commercial areas. In addition, it is caused by parcels, which are large scale and economically valuable, and are influenced by traffic factors such as urban centers and subway accessibility. As a result of each type of building construction, the parcels where the building use change occurred have spatial characteristic difference compared to other building construction, while the spatial characteristics are similar between the new construction/extension and new construction/extension with change of use. Based on this results, it will be possible to identify areas with high demand for small-scale development in the future and to utilize them for planning management of urban development. Furthermore, it will be possible to manage development demand by type of building construction, and to prepare differentiated plans considering the appropriateness of development plan, availability of infrastructure, and harmony with surrounding environment.