• Title/Summary/Keyword: metropolitan areas

Search Result 1,504, Processing Time 0.029 seconds

Distribution of Social Wasps in Two Metropolitan Cities (Busan and Daegu) of South Korea

  • Kim, Chang-Jun;Choi, Moon Bo
    • Proceedings of the National Institute of Ecology of the Republic of Korea
    • /
    • v.2 no.2
    • /
    • pp.101-107
    • /
    • 2021
  • The objective of this study was to analyze social wasps' urban distribution tendency based on 10 species found in two metropolitan cities (Busan and Daegu) of South Korea. There 10 species included six species (Vespa mandarinia, V. ducalis, V. crabro flavofasciata, Vespula koreensis koreensis, Parapolybia indica, and Polistes snelleni) of forest dwellers that inhabited urban main forests and satellite forests, two species (V. simillima simillima and V. analis parallela) of facultative dwellers that nested at diverse sites of urban areas with greater preference for urban forest, and two species (V. velutina nigrithorax and P. rothneyi koreanus) of urban dwellers that nested at almost all sites, including urban and forest areas. These urban dwellers were found to adapt well to an urban environment based on their far higher rate of urban nesting compared to facultative dwellers. When distribution tendencies of facultative dwellers and urban dwellers in Busan and Daegu were compared, a regular distribution was mostly observed in Busan with a dense forest network. For Daegu that lacked forest connectivity, the greatest distribution of species was found in the nearby urban forest. For Daegu, a city further away from forests, urban dwellers occurred far beyond forest sites compared to Busan with a dense forest network.

Study on the Characteristics of Spatial Relationship between Heat Concentration and Heat-deepening Factors Using MODIS Based Heat Distribution Map (MODIS 기반의 열 분포도를 활용한 열 집중지역과 폭염 심화요인 간의 공간관계 특성 연구)

  • Kim, Boeun;Lee, Mihee;Lee, Dalgeun;Kim, Jinyoung
    • Korean Journal of Remote Sensing
    • /
    • v.36 no.5_4
    • /
    • pp.1153-1166
    • /
    • 2020
  • The purpose of this study was to analyze the spatial correlation between the heat distribution map of the satellite imaging base and the factors that deepen the heat wave, and to explore the heat concentration area and the space where the risk of future heat wave may increase. The global Moran's I of population, land use, and buildings, which are the causes of heat concentration and heat wave deepening, is found to be high and concentrated in specific spaces. According to the analysis results of local Moran's I, heat concentration areas appeared mainly in large cities such as metropolitan and metropolitan areas, and forests were dominant in areas with relatively low temperatures. Areas with high population growth rates were distributed in the surrounding areas of Gyeonggi-do, Daejeon, and Busan, and the use of land and buildings were concentrated in the metropolitan area and large cities. Analysis by Bivarate Local Moran's I has shown that population growth is high in heat-intensive areas, and that artificial and urban building environments and land use take place. The results of this research can lead to the ranking of heat concentration areas and explore areas with environments where heat concentration is concentrated nationwide and deepens it, so ultimately it is considered to contribute to the establishment of preemptive measures to deal with extreme heat.

A Study on the Location Error Measurement to Resolve the Problem of Weak Signal Areas for Satellite Navigation System (위성항법시스템기반의 도심지역 음영해소를 위한 위치오차 측정에 관한 연구)

  • Park, Chi-Ho
    • Journal of the Institute of Electronics Engineers of Korea TC
    • /
    • v.48 no.10
    • /
    • pp.13-19
    • /
    • 2011
  • This study is to explore the causes for weak signal areas and suggest solutions for the problem of weak signal areas through the experiments for location error of satellite navigation system depending on the characteristics of locations. For kinematic point positioning, a moving object can have different number of satellite navigation systems available depending on its location. It has to receive location data from at least four satellite navigation systems for precise point positioning. However, drastic urbanization and poor surroundings have caused greater location error and weak signal areas. To reduce location error and remove the occurrence of weak signal areas, it is necessary to verify the characteristics of metropolitan surroundings. Therefore, experiments were conducted to measure location error and discover the causes for the occurrence of weak signal areas in metropolitan area, residential area, woods, ocean area, and open ground. In addition, this study suggests a point positioning algorithm with high precision suitable for local surroundings and an algorithm to remove weak signal areas.

Study on the Film Industry Cluster through the Policy Comparison of Regional Film Industry - Focus on the Metropolitan, Busan, Jeonju Areas - (지역 영상산업 정책비교를 통한 영상산업 클러스트 연구 - 수도권, 부산, 전주를 중심으로 -)

  • Kim, Jin-Hae
    • The Journal of the Korea Contents Association
    • /
    • v.8 no.9
    • /
    • pp.115-123
    • /
    • 2008
  • The purpose of this research is how to build the film industry cluster compare with the policies of metropolitan areas and local film industry. This research select four areas including Seoul and Kyunggi areas and Busan, Jeonju. And through the compare with the film industry infra & policies which results in as follows. This research suggest that film industry cluster devided into the two types. The one is the Film Industry Cluster Type and the other is Film Connected Tourism Business Cluster Type. Film Industry Cluster Type is devided into international competitive cities and domestic film industry cities. We suggest that Seoul, Kyunggi and Busan areas are designated to international competitive cities and Jeonju and Daejeon areas are designated to domestical cities. And the kwangwon, Chungcheng, Cheju Areas designated to Film Connected Tourism Business Cluster for location and open set business to improve the local development.

Deposition of Atmospheric Pollutants in Forest Ecosystems and Changes in Soil Chemical Properties (대기오염물질(大氣汚染物質)의 산림생태계내(山林生態系內) 유입(流入)과 토양(土壤)의 화학적(化學的) 특성(特性) 변화(變化))

  • Kim, Dong Yeob;Ryu, Jung Hwan;Chae, Ji Seok;Cha, Soon Hyung
    • Journal of Korean Society of Forest Science
    • /
    • v.85 no.1
    • /
    • pp.84-95
    • /
    • 1996
  • Environmental pollution has recently been progressed in the metropolitan and industrial areas of Korea and concerns have been evolved against the chronic effects of the pollution on natural ecosystem. This study was carried out to investigate the environmental pollution impacts on ion input into forest ecosystems and soil environmental changes. Study plots were established at Seoul, Ulsan, Yeochon, and Seosan for pollution sites and at Pyungchang for a non-pollution site. Atmospheric deposition was measured with rain, throughfall, and stem flow samples collected in the forest areas. Soil chemical properties were investigated to compare the pollution impacts on the sites. Precipitation acidity in the metropolitan and industrial areas ranged from pH 4.5 to 5.5, showing the levels lower than pH 5.8 of mountain area. Ion concentrations in the precipitation had increased significantly while passing the crown layer in the metropolitan and industrial areas, showing the increase by 4 times at the maximum. Total ion input in the metropolitan and industrial areas was greater than that in mountain area by approximately 2-3 times. Soil acidification caused by acidic ion input seemed to be greatest at Seoul, showing pH 1 decrease compared to that of Pyungchang. Soil canon contents were relatively high in the metropolitan and industrial areas. Although the canon leaching loss was not apparent, soil acidification process seemed to be continued by acidic ion input. Environmental pollution in the metropolitan and industrial areas exerted changes in ion input into the forest ecosystems and soil conditions. The chronic effects of environmental pollution should be monitored and investigated further to explain the processes of ecosystem change and the impacts on plant growth.

  • PDF

Major Issues of University Restructuring Policy and Discussion for New Alternatives (대학구조개혁정책의 쟁점과 대응 과제에 관한 연구 - 학령인구 감소에 대한 새로운 대학구조개혁 패러다임 탐색 -)

  • Ban, Sang-Jin
    • Journal of Engineering Education Research
    • /
    • v.18 no.2
    • /
    • pp.14-26
    • /
    • 2015
  • The purpose of this study was to analyze the number of university entrants influenced by the population decline of school age, to discuss the major issues of university restructuring policy initiated by government, and to suggest the mid- to long-term policy agenda on university restructuring. According to the analysis of university enrollment changes, university enrollment quota will decrease to 29% of year 2013. And the ratio of private university enrollment and the entrants of universities in the metropolitan areas will increase. Under these circumstances, it is highly concerned that high school graduates will be more concentrated to private universities located in the metropolitan areas. The government policy on university restructuring have several problems on the direction, the pursuing strategies, and the negative impacts of it. This study suggested the new paradigm for the university development and also the alternative strategies such as the balanced development in universities, financial support system, school-to-work policy, university collaboration system, and an enactment of university development.

Urban Environment change detection through landscape indices derived from Landsat TM data

  • Iisaka, Joji
    • Proceedings of the KSRS Conference
    • /
    • 2002.10a
    • /
    • pp.696-701
    • /
    • 2002
  • This paper describes some results of change detection in Tokyo metropolitan area, Japan , using the Landsat TM data, and methods to quantify the ground cover classes. The changes are analyzed using the measures of not only conventional spectral classes but also a set of landscape indices to describe spatial properties of ground cove types using fractal dimension of objects, entropy in the specific windows defining the neighbors of focusing locations. In order eliminate the seasonal radiometric effects on TM data, an automated class labeling method is also attempted. Urban areas are also delineated automatically by defining the boundaries of the urban area. These procedures for urban change detection were implemented by the unified image computing methods proposed by the author, they can be automated in coherent and systematic ways, and it is anticipated to automate the whole procedures. The results of this analysis suggest that Tokyo metropolitan area was extended to the suburban areas along the new transportation networks and the high density area of Tokyo were also very much extended during the period between 1985 and 1995.

  • PDF

Comparisons of Young Renter Households' Housing Situation by Locations Reflected in the 2012 Korea Housing Survey (2012년 주거실태조사에 나타난 청년 임차가구의 지역별 주거 실태 비교)

  • Lee, Hyun-Jeong
    • Journal of the Korean housing association
    • /
    • v.26 no.1
    • /
    • pp.81-90
    • /
    • 2015
  • The purpose of this study was to investigate housing characteristics of young renter households by locations using licensed microdata of the 2012 Korea Housing Survey. There were 1,020,216 renter households (weighted count) headed by persons between 20 and 34 years of age, and their housing characteristics were compared statistically across their residential locations (Capital Region, metropolitan cities, other areas). Major findings are as follows: (1) Capital Region young renters had the worst housing quality to have the greatest proportion of households living in units failed to meet national minimum housing standards, and/or in basement or semi-basement units; (2) Capital Region young renters had the greatest proportion of households that had housing cost burdens; and (3) 37.3% of young renter households in metropolitan areas and 33.5% in Capital Region were found to receive family support in order to afford current rental costs.

Planning Features of Recent House Showrooms in the Seoul Metropolitan Areas (최근 수도권 모델하우스에 나타난 공간구성 경향에 관한 연구)

  • Sung, Ki-Won;Lee, Hyun-Jeong
    • Proceedings of the Korean Institute of Interior Design Conference
    • /
    • 2004.11a
    • /
    • pp.72-75
    • /
    • 2004
  • The focus of this study was on spatial and interior characterization of recently developed and marketed apartments. The house showrooms in the Seoul Metropolitan Areas that have recently been open were selected and analyzed. The floor plans and relevant materials via website for each showroom provided by major housing development companies were examined, and site visits were made. The finding of this study indicated that high-tech systems were applied to heighten security and safety. It was revealed that various exterior design features were adopted and emphasized, so they affected spatial composition and utilization. Another finding was the use of environmentally friendly materials and features as indoor air quality became an emerging concern. Additionally, it was noticed that features in relation to open housing and interior finishes became more customized to meet different needs of consumers. Therefore, the characteristics of recent house showrooms were summarized into high-tech, environmental friendliness, and customization.

  • PDF

The Prediction and Operation of Residental Water Demand in Large Distribution System (광역상수도 시스템의 용수 수요량 예측 및 운용)

  • Han, Tae-Hwan;Nahm, Eui-Suck
    • Proceedings of the KIEE Conference
    • /
    • 1999.07b
    • /
    • pp.646-648
    • /
    • 1999
  • Kalman Filter model of demand for residental water and consumption pattern were tested for their ability to explain the hourly residental demand for water in metropolitan distribution system. The hourly residental demand for water is calculated from the daily residental demand and consumption pattern. The consumption pattern which has 24 time rates is characterized by data granulization in accordance with season kind, weather and holiday. The proposed approach is applied to water distribution system of metropolitan areas in Korea and its effectiveness is checked.

  • PDF