• Title/Summary/Keyword: the urban environment

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A Study on the Effectiveness of Wind Corridor Construction forImproving Urban Thermal Environment: A Case study of Changwon, South Korea (도시 열환경 개선을 위한 취약지역 선정 및 바람길 조성 방안: 창원시를 대상으로)

  • Kim, Jong-Sung;Kang, Jung-Eun
    • Journal of Environmental Impact Assessment
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    • v.30 no.4
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    • pp.187-202
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    • 2021
  • This study examined the effectiveness of wind corridor construction by analyzing the thermal environment, cold air generation, ventilation, and geographical characteristics to improve urban thermal environment and establish the basis for specialized strategy in Changwon-si, Gyeongsangnam-do. Using spatial analysis and remote sensing techniques, surface temperature, land cover and land use, wind field, and slope were measured and through this, a wind corridor analysis model was constructed. As a result of the analysis as of 2020, Changwon-si generally has land cover characteristics that are advantageous for the generation of cold air, but the temperature in most urban areas is the highest, and the temperature in areas such as north Changwon area, Jinbukmyeon, Ung-dong, and Ungcheon-dong are relatively high. There was a typical trend of high average wind speed in mountain regions and low average wind speed in urban areas. Accordingly, the north Changwon area, the former Changwon downtown area, the Hogye-ri and Pyeongseong-ri areas, and the Changpo Bay area are derived as vulnerable areas to thermal environment, and various measures to reduce temperature and improve air quality that the inflow of cold air into the area considering the characteristics of each area and securing wind ventilation between the surrounding mountains, reservoirs, and park areas were proposed.

Wind Mapping of Singapore Using WindSim (WindSim을 이용한 싱가폴 바람지도 작성)

  • Kim, Hyun-Goo;Lee, Jia-Hua
    • Journal of Environmental Science International
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    • v.20 no.7
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    • pp.839-843
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    • 2011
  • We have established a wind map of Singapore, a city-state characterized its land cover by urban buildings to confirm a possibility of wind farm development. As a simple but useful approximation of urban canopy, a zero-plane displacement concept was employed. The territory is divided into 15 sectors having similar urban building layouts, and zero-plane displacement, equivalent roughness height at each sector was calculated to setup a terrain boundary condition. Annual mean wind speed and mean wind power density map were drawn by a CFD micrositing model, WindSim where Changi International Airport wind data was used as an in-situ measurement. Unfortunately, predicted wind power density does not exceed 80 $W/m^2$ at 50 m above ground level which would not sufficient for wind power generation. However, the established Singapore wind map is expected to be applied for wind environment assessment and urban planning purpose.

Vitalization of Ecological, Scenic, Participative aspects of Urban Agriculture - Focusing on Population Characteristics and Individual Recognitions - (생태, 경관, 참여 측면의 도시농업 활성화 방안 모색 - 인구집단 특성과 개인의 주관적 인식 분석을 중심으로 -)

  • Chang, Insu;Suh, Tongju;Kim, Hong sok(Brian)
    • Journal of the Korean Regional Science Association
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    • v.34 no.4
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    • pp.35-48
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    • 2018
  • The purpose of this study is to empirically investigate the experiences and subjective opinions of urban agriculture in order to explore ways to vitalize urban agriculture. More specifically, we divides environmental value into three categories of ecology, landscape, and participation, and defines a function of urban agriculture to improve environmental values related to the three categories mentioned above. The main results of the empirical analysis using the survey data are summarized as follows. First, the probability of gathering information about urban agriculture is higher in metropolitan cities than small cities, and the larger the residence size, the higher the probability of actual urban agriculture participation. Second, the positive response rate was high for the three categories of urban agriculture, while the negative response rate was high for the surrounding environment. The implications derived from the analysis are as follows. First, the opposite results of experiences of urban agriculture suggests that local governments should further promote urban agriculture-based investment policies. In addition, these policies need to be preceded by analysis of the characteristics of population groups in the region Also, it is necessary to improve the environment through urban agriculture.

A Study on the Healing environment of Urban Alternative School's space - Focused on Sungmisan School's space - (도시형 대안학교 공간의 치유환경에 관한 연구 - 성미산 학교 공간을 중심으로 -)

  • Jin, Dal-Rae;Kim, Kwang-Ho
    • Journal of The Korea Institute of Healthcare Architecture
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    • v.15 no.4
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    • pp.3-11
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    • 2009
  • As de-schooling students (students who leave schools) have been produced and increased in middle and high schools every year since 1990s, urban alternative schools have founded with Seoul as the center. The objects of such urban alternative schools are de-schooling teenagers, and their educational goal is to make the students to discover their own values and grow as members of the community by accomplishing their healing and growth. Most of students in alternative schools have excessive self-centered feeling than ordinary people, and since they don't have exchanges with others, they have to receive holistic healing along with education. Here, 'healing' is a method of approaching to health through environmental, psychological, social and cultural supports unlike 'treatment' used for medical means. Therefore, holistic healing for alternative schools' students has to accomplish self-knowledge, self-control, and self-healing without repulsion through spaces of healing environments instead of heavy-handed exchanges. This study has integrated a theory of Max $L{\ddot{u}}scher$ who suggested a psychological healing theory in terms of internal character and a theory of Rudolf Steiner who suggested it in terms of practical and holistic sense and analyzed Sungmisan School, one of urban alternative schools in Seoul through the integrated theory. The analysis of the integrated theory are intended to emphasize the importance of healing environments and suggest methods in creating healing environments for urban alternative schools in the future.

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Analysis of Impact on Commuting Behavior in Urban and Rural Areas using Travel Diary Survey Data (가구통행실태조사 데이터를 이용한 도시지역과 농촌지역의 통근시간에 미치는 영향 비교 분석)

  • Jeon, Jeongbae;Park, Meejeong;Kim, Sangmin;Kim, Solhee;Kwon, Sung Moon
    • Journal of Korean Society of Rural Planning
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    • v.25 no.3
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    • pp.77-87
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    • 2019
  • This study is to identify the factors affecting commuting time and modes in urban and rural areas using household traffic survey data. The findings indicated that commuting time using passenger car in rural areas was 1.6 times longer than those in urban areas. When citizen use public transportation, however, there was not much difference in commuting time in urban and rural areas. Among the various factors affecting commuting time in rural areas (13 factors have statistical significance), the most influential factors were that public transportation, managers and office workers, functional and device managers, and passenger car. In urban areas, the highly influential factors were public transportation and walking among the 16 affecting factors which have statistical significance. The commuting time in rural areas increased according to the occupation types, but the commuting time of full-time workers decreased. This phenomenom means that occupation groups with the full-time system prefer residential areas in the densely populated town.

Schematic Sustainability Assessment Model in Residential Area Using Residential Performance Management System (RPMS) (거주성능관리시스템(RPMS)을 이용한 주거지 지속가능성 평가모형 연구)

  • Lee, Hee-Won;Lee, Sang-Hyun;Kim, Young-Suk
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.12 no.4
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    • pp.1954-1961
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    • 2011
  • The concept of sustainability in residential area is closely related to the notion of amenity, livability, health and interchangeably used with the terms of urban growth management, urban regeneration, new urbanism, urban village movement, compact development, smart growth and the quality of residential environment. Residential Performance Management System (RPMS This system is developed granted by 'Korea Institute of Construction & Transportation Technology Evaluation and Planning' (KICTEP) during 2005-2008.)is a kind of decision making supportive program developed for the evaluation and assessment of various urban performances. It can be utilized for various purposes by many of urban related expert like planner, manager, etc. This study investigate the schematic model for the applying the indicators of quality of residential environment developed by SDI (Seoul Development Institute) using RPMS.

Impacts of Awareness of Urban Regeneration Project on place attachment : Focused on Urban Regeneration project of Jungang-dong in Cheongju (도시재생사업 인지도가 장소애착에 미치는 영향 - 청주시 중앙동 도시재생사업 대상지를 중심으로 -)

  • Oh, Hoo;Jang, In Soo;Hwang, Hee Yun
    • Journal of the Korean association of regional geographers
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    • v.22 no.3
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    • pp.643-654
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    • 2016
  • The ultimate goal of urban regeneration is the economic development and activation of region. In order to continue to management the urban regeneration projects and to achieve a goal, we should look at the recognition of people visiting the place. This recognition is represented as a place attachment. Place attachment is the realizing means for local activation by inducing a lot of attention and a visit to place. Accordingly, this study was selected the Jungang-dong in Cheongju as a case study and measured awareness of the physical environment and activity programs. Based on the survey, this study analyzed the impacts of awareness of urban regeneration project on place attachment by carrying out multiple regression analysis. According to the analytical results, Visitors formed an place attachment called 'I want to stay here longer' and 'I will miss here if this place has changed'. However, visitors are unable to form an place attachment called 'Here is a distinctive place'. Finally, this study suggests the direction of urban regeneration projects to reflect the physical environment and activities programs at the same time and form the rich psychology of visitors.

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A Study on Determinants of Elderly Residental Satisfaction on the Planned Elements of the Participatory Residential Environment Improving Projects - Focused on the Project of Yonnam-dong - (주민참여형 주거지 재생사업에 대한 고령거주자의 사업 만족도 결정요소 연구 - 연남동 사업지구를 대상으로 -)

  • Kim, Ah-Leum;Koo, Ja-Hoo
    • Journal of the Korean housing association
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    • v.25 no.5
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    • pp.125-132
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    • 2014
  • The purpose of this study is to estimate the determinants of Elderly Residental Satisfaction on the residential environment improving projects and suggest the political implications. The survey include questionnaires about the satisfaction level on the project physical and non-physical maintenance factors. The results were statistically analyzed by Correlation Analysis and Regression Analysis. As the result of the study, firstly, it shows that 'traffic and improve pedestrian environment' and 'improved parking environment' factors that are important to the satisfaction of the elderly residents of a high impact on the business component a physical maintenance. Secondly, it shows that 'home improvement and management support' and 'economic foundation' factors that are important to the satisfaction of the elderly residents of a high impact on the business component a non-physical maintenance. The results of analysis on the determinants of Elderly Residental Satisfaction on the residential environment improving projects of Yonnam project may be important foundation for future strategies for improvement.

Effect of land use and urbanization on groundwater recharge in metropolitan area: time series analysis of groundwater level data

  • Chae, Gi-Tak;Yun, Seong-Taek;Kim, Dong-Seung;Choi, Hyeon-Su
    • Proceedings of the Korean Society of Soil and Groundwater Environment Conference
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    • 2004.09a
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    • pp.113-114
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    • 2004
  • In order to classify the groundwater recharge characteristics in an urban area, a time series analysis of groundwater level data was performed. For this study, the daily groundwater level data from 35 monitoring wells were collected for 3 years (Fig. 1). The use of the cross-correlation function (CCF), one of the time series analysis, showed both the close relationship between rainfall and groundwater level change and the lag time (delay time) of groundwater level fluctuation after a rainfall event. Based on the result of CCF, monitored wells were classified into two major groups. Group I wells (n=10) showed a fast response of groundwater level change to rainfall event, with a delay time of maximum correlation between rainfall and groundwater level near 1 to 7 days. On the other hand, the delay time of 17-68 days was observed from Group II wells (n=25) (Fig. 1). The fast response in Group I wells is possibly caused by the change of hydraulic pressure of bedrock aquifer due to the rainfall recharge, rather than the direct response to rainfall recharge.

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