• 제목/요약/키워드: Urban size

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The Endmember Analysis for Sub-Pixel Detection Using the Hyperspectral Image

  • Kim, Dae-Sung;Cho, Young-Wook;Han, Dong-Yeob;Kim, Young-Il
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.732-734
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    • 2003
  • In the middle -resolution remote sensing, the Ground Sampled Distance(GSD) sensed and sampled by the detector is generally larger than the size of objects(or materials) of interest, in which case several objects are embedded in a single pixel and cannot be detected spatially. This study is intended to solve this problem of a hyperspectral data with high spectral resolution. We examined the detection algorithm, Linear Spectral Mixing Model, and also made a test on the Hyperion data. To find class Endmembers, we applied two methods, Spectral Library and Geometric Model, and compared them with each other.

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A Study on the Architectural Planning of Urban-Rural Exchange Center for the Activation of Rural Village (농촌마을 활성화를 위한 도농교류센터 건축계획에 관한 연구)

  • Cho, Won-Seok;Kim, Heung-Gee
    • Journal of the Korean Institute of Rural Architecture
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    • v.13 no.2
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    • pp.31-38
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    • 2011
  • The domestic rural villages have faced on the many problems in future society. The major purposes of this paper are to clarify in space program for the Rural Activating through the Urban-Rural Exchange. Firstly, it has examined the rural amenities of rural resources, such as natural surroundings, culture, history, landscape, economy, community power etc. Secondary, it was checked about analysis of operation programs corresponding to the rural resources. Thirdly, These space program of Urban-Rural Exchange, which has been archived process of spacial planning, was investigated the spacial conditions corresponding to the operation programs. To make Urban-Rural Exchange Center, it was necessary to analyze physical spacial size of building gross area, by data of cross checking with the area per capita and area per household in the rural village. According to the research, Urban-Rural Exchange Center was to be included visiting center, multipurpose room and dining room, exhibiting space, conference room, experience room, welfare space and specialized room with activation of rural village. However additional conditions are required that it is based on the sustainable development, environmentally friendly architecture both operation program and space program for the value of common society, citizen and villagers.

An Empirical Analysis on the Determinants of Residential Mobility and Reclassifying Urban and Rural Areas (도시와 농촌의 재유형화와 주거이동 결정요인 분석)

  • Heewon Chang;Donghwan An
    • Journal of Korean Society of Rural Planning
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    • v.30 no.2
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    • pp.79-96
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    • 2024
  • The purpose of this study is to analyze the factors affecting residential mobility between urban and rural. After classifying urban and rural region based on discriminatory attributes of the regions, we applied a multinomial logistic model, using the sample data of 2020 Korea Population and Housing Census. The major findings are as follows. The young highly educated in cities avoided rural. The young less educated in rural engaged in 2, 3th industries as well as agricultural industry, but remained in low-paying and unstable jobs. In addition, various classes moved to rural and rising house prices in cities pushed people to rural. Therefore, it is necessary to develop diversified regional industry models and provide opportunities for high quality and stable jobs in rural by linking industrial demand, education and jobs. Also, preserving the rural environment, settlement conditions and residential environment are needed for satisfying various needs of urban residents who migrate to rural areas. While regional policies so far have focused on maintaining the population size and promoting a population influx, rural development and population policies should be established in a way that responds to diverse population classes in an era of population decline.

Comparative Analysis of Rural and Urban Residential Interior Elements Affecting Physically Disabled's Independence (재가지체장애인의 자립을 저해하는 농촌과 도시의 주거실내 환경요소에 대한 비교연구)

  • Park, Ji-Young;Jang, Mi-Seon;Lee, Yeun-Sook
    • Korean Institute of Interior Design Journal
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    • v.25 no.1
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    • pp.132-141
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    • 2016
  • For those with disabilities, the residential area is the primary place to adapt the disabilities. Since the quality of the area gives a critical impact on their quality of life, it is essential to finding the measures to create the residential environment that supports their independence. In this regard, this study aimed to compare and analyze the interior elements of the houses that hinder the independence of the physically handicapped in the rural and urban areas, and conducted a survey on a total of 80 physically challenged in Seoul and Yeongwol (40 for each area). As a result, the respondents answered that the houses where they are currently living are hindering their independence regardless of area, and there were regional differences in the level of inconvenience with the size of living room, size of utility room, location of room, lighting and heating environment, ventilation system, deteriorated wallpapers and finishing materials, threshold and floor level difference and humidity control. This study has significance by providing the realistic measures to improve the housing environment of the physically challenged living in the rural and urban areas to be customized to them to increase their quality of life.

A Study on Effects of Changes in the Optimal Population Density and Traffic Volume Impact of Urban Size (최적인구와 통행량분포가 도시규모의 변화에 미치는 영향에 관한 연구)

  • Yoo, Inhye
    • Journal of the Korean Regional Science Association
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    • v.31 no.1
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    • pp.21-42
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    • 2015
  • This paper investigates whether urban expansion and the vitalization of the local economy can be achieved through new city development. The results show that regardless of the starting point (origin) or destination point, traffic increases closer to the origin for the purpose of transportation and decreases farther from the origin. However, traffic tends to increase in districts 20 to 40 km away from the origin. Hence, building a new city in this district may be effective in terms of geography and functionality.

Nomadism in Yeohlee Teng's Works (욜리 텡(Yeohlee Teng) 디자인에 표현된 노마디즘)

  • Yim, Eunhyuk
    • Journal of Fashion Business
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    • v.20 no.1
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    • pp.35-52
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    • 2016
  • Yeohlee Teng's 'Urban Nomad' concept stresses high mobility and flexibility in 'Clothing-as-shelter' in order to satisfy the needs of urban dwellers. Yeohlee interprets clothing as a portable environment that protects and shelters urban nomads as well as creates space of clothing as intimate architecture. This study examines Nomadism in Yeohlee's designs since 1981 when she received the attention from the fashion critics, by conducting literary survey as well as case analysis. Nomadism in Yeohlee's work showed the following characterizes. First, 'modular system' deals with the organized dressing system that enables interchanging and layering of separates that function in the fifth season; second, 'organic geometry' describes the architectonic approach to clothing as wearable structure that transforms two dimensional geometry into three dimensional form; third, 'functionalism' refers to the use of technological novel materials, ergonomic clothing construction, and the strategy of using structure as decoration; and fourth, 'reductionism' is the economical approach for realizing Nomadism, which is composed of one-size-fits-all as well as unisex size system and 'zero waste' strategy to maximize use of a piece of cloth.

A Study on the planning approach through the Actual Research of Complex Buildings in the New Town of Sangju (상주시 신도심의 복합건축물 실태조사를 통한 계획방향에 관한 연구)

  • 이근택;정용호
    • Journal of the Korean housing association
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    • v.15 no.1
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    • pp.85-93
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    • 2004
  • This study does try to proceed on the assumption that complex buildings can vitalize urban life of contemporary society from contemporary complexity and cases of past failure. The scope of investigation on complex buildings in Sangju built in 1990s' and 2000s' on this thesis is that site size is 400 square meter, total area 1500 square meter, and the number of stories on the ground below 5 floor. Method of investigation on twenty one buildings which have been built on new C.B.D. between the Namwon avenue and the Joongang 1th street in Sangju is through field investigation, field photographs, recordings and drawings on these buildings. Investigative contents have been divided and analysized into physical and functional elements in urban and architectural dimension. On the basis of these results, the future planning approach of complex buildings in medium and small cities has been considered into planning principles of convenience of building use and efficiency of site size, physical plans reflected on the traffic and pedestrian movings and the face of buildings, pedestrian resting space-creation like plazas and central gardens, regional character reflected with urban context, and separation and union of approached movings interrelated among the components.

A Study on Stratification Phenomena of Still Hydrogen-Methane Gas Mixture in a Vertical Urban Gas Pipe (도시가스 수직 배관 내 정지된 수소-메탄 혼합가스의 성층화 현상 연구)

  • Tae Kyun Kim;Jung Min Cho;Jaeyong Sung
    • Journal of the Korean Society of Visualization
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    • v.22 no.1
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    • pp.68-78
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    • 2024
  • The stratification phenomena of still hydrogen (20%) and methane (80%) gas mixture in a vertical urban gas pipe have been investigated by simulating the flows based on a mixture model. The stratification is accompanied with the natural convection by the buoyancy force. The hydrogen volume fraction in the upper sections of the pipe increases with time but the increasing rate gets smaller due to the weaker buoyancy force. The pipe with a smaller diameter exhibits a higher peak of hydrogen concentration. The size of vortices is proportional to the pipe diameter. The slip velocity between hydrogen and methane oscillates with a large amplitude at the earlier stage of stratification and then the amplitude decreases sharply. The slip velocity decreases with the diameter, making the stratification become slower. The length of pipe does not affect the stratification since the pipe is sufficiently long relative to the size of vortices.

A Study of Size Distribution of Sulfate and Nitrate in Urban Air (都市大氣中 黃酸鹽과 窒酸鹽 關한 硏究)

  • 신상은;김승학;김희강
    • Journal of Korean Society for Atmospheric Environment
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    • v.2 no.1
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    • pp.33-39
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    • 1986
  • Particulate matter was collected by Andersen Air Sampler in the Seoul area during February-October, 1985, in order to investigate size distribution of sulfate and nitrate in aerosol, and conversion of sulfur dioxide to sulfate and that of nitrogen dioxide to nitrate. The size distribution of sulfate and nitrate had fine mode. The ratio of fine sulfate to total sulfate in aerosol and that of fine nitrate to total nitrate showed between 54.6% and 86%, and 55.7% and 95%, respectively, which presumably originated from gaseous reaction of sulfur dioxide and nitrogen dioxide in the atmosphere.

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A Study on the Analysis of Connectivity for Green Space Planning in Daejeon Metropolitan City (대전시 녹지계획을 위한 연결성 분석에 대한 연구)

  • Cheong, Yong-Moon;Kim, Sun-Tae;Kim, Myoung-Soo
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.5 no.6
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    • pp.14-23
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    • 2002
  • Daejeon is a large city in Korea and very high-speedly developing city. Recently urban area is expanding and large forest patch is fragmenting into small habitats because of urban sprawl. The fragmentation of large forest patch decreases the size of habitats and increases the loss of biodiversity in urban area. This study is to analysis the connectivity of green space of Daejeon metropolitan city, and suggest the optimum location of greening site and corridor in order to increase the connectivity of green space of Daejeon metropolitan city. The findings of this study are as follows; (1) The result of this study showed that ${\alpha}$ and ${\gamma}$ index are -0.24 and 0.20. A ${\alpha}$ index is very low and a ${\gamma}$ index is relatively low. (2) The dispersion was very high, for urban forest patches were isolated through fragmentation. Therefore, it needed ecological corridors in order to connect the patches. (3) A urban streams were very important in connectivity of urban green space. Urban riparian corridor must be preserved and restored. (4) A urban green space policy and planning must be prepared to increase the connectivity and assessment of alternatives must be accomplished from perspective of connectivity. The results of this study show the practical implications in perspective of green space planning and policy in Daejeon metropolitan city. The suggestions by findings of this study are to connect green space between large forest patch in urban fringe and island green space in inner city. Also, It is required that urban stream is restored to natural feature for use of corridor by wildlife.