• 한국환경복원기술학회지
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• 제24권2호
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• pp.1-17
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• 2021

As population concentration, high-rise, and high-density progresses amid rapid industrialization and urbanization in Korea, green areas in the city have decreased significantly and the natural environment has deteriorated day by day due to various development projects. In order to cope with these social changes, many studies related to park and green areas have been conducted, but in the case of Gwangju-si, only studies on green areas such as vegetation structures, street facilities, and recreation forests have been conducted on park green areas. The situation is not losing. Therefore, in this study, a survey was conducted on Gwangju citizens to understand the usage behavior and satisfaction of park green areas, and to provide basic data for future park development and reorganization. As a result, first, to induce a variety of static and dynamic activities in order to increase the park satisfaction of Gwangju citizens, it is possible to create a park that has not been formed as soon as possible, and by planning programs with various themes. Second, it is necessary to expand green space services in marginalized areas by creating water streams, flower pots, and rooftop greening around the lives of Gwangju citizens, and create park green spaces with themes using cultural and historical resources for each administrative district. Third, in order to solve the dry landscape in some urban areas, it is necessary to establish a three-dimensional landscape plan by creating a variety of green areas such as potted plants, green areas, and street trees, and by giving functions of park green areas such as expanding leisure and convenience facilities.

• 통합자연과학논문집
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• 제16권4호
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• pp.139-145
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• 2023

Due to changes in the distribution system and increased demand for renewable energy, interest in technology to increase the limit capacity of distributed energy grid connection using grid flexible resources is also increasing. Recently, the distribution system system is changing due to the increase in distributed power from renewable energy, and as a result, problems with the limited capacity of the distribution system, such as waiting for renewable energy to connect and increased overload, are occurring. According to the power generation facility status report provided by the Korea Power Exchange, of the total power generation capacity of 134,020 MW as of 2021, power generation capacity through new and renewable energy facilities is 24,855 MW, accounting for approximately 19%, and among them, power generation through solar power accounts for a total portion of the total. It was analyzed that the proportion of solar power generation facilities was high, accounting for 75%. In the future, the proportion of new and renewable energy power generation facilities is expected to increase, and accordingly, an efficient operation plan for the distribution system is needed. Advanced country-type NWAs that can integrate the operation and management of load characteristics for each line of the distribution system, power distribution, regional characteristics, and economic feasibility of distributed power in order to improve distribution network use efficiency without expanding distribution facilities due to the expansion of renewable energy. An integrated operating system is needed. In this study, in order to improve the efficiency of distribution network use without expanding distribution facilities due to the expansion of renewable energy, we developed a method that can integrate the operation and management of load characteristics for each line of the distribution system, power distribution, regional characteristics, and economic feasibility of distributed power. We want to develop an integrated operation system for NWAs similar to that of advanced countries.

• Nuclear Engineering and Technology
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• 제49권7호
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• pp.1405-1413
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• 2017

To investigate the heat loads imposed on a reactor vessel through the natural convection of core melts in severe accidents, mass transfer experiments were performed based on the heat transfer/mass transfer analogy, using two- (2-D) and three-dimensional (3-D) facilities of various heights. The modified Rayleigh numbers ranged from $10^{12}$ to $10^{15}$, with a fixed Prandtl number of 2,014. The measured Nusselt numbers showed a trend similar to those of existing studies, but the absolute values showed discrepancies owing to the high Prandtl number of this system. The measured angle-dependent Nusselt numbers were analyzed for 2-D and 3-D geometries, and a multiplier was developed that enables the extrapolation of 2-D data into 3-D data. The definition of $Ra^{\prime}_H$ was specified for 2-D geometries, so that results could be extrapolated for 3-D geometries; also, heat transfer correlations were developed.

• 한국태양광발전학회지
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• 제4권2호
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• pp.45-53
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• 2018

Natural gas demand for power generation continued to increase until 2013 due to the expansion of large-scale LNG power plants after the black-out of 2011. However, natural gas demand for power generation has decreased sharply due to the increase of nuclear power and coal power generation. But demand for power generation has increased again as energy policies have changed, such as reducing nuclear power and coal power plants, and abnormal high temperatures and cold waves have occurred. If the gas pipeline pressure can be properly maintained by predicting these fluctuations, it can contribute to enhancement of operation efficiency by minimizing the operation time of facilities required for production and supply. In this study, we have developed a regression model with daily power demand and base power generation capacity as explanatory variables considering characteristics by day of week. The model was constructed using data from January 2013 to December 2016, and it was confirmed that the error rate was 4.12% and the error rate in the 90th percentile was below 8.85%.

• 한국환경복원기술학회지
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• 제9권6호
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• pp.95-106
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• 2006

Ecopark enables sustainable use of natural resource and can be used as a place for site-based environmental education as well as for recreation. This study investigated the opinion for the development of ecopark and ecological education program of ecopark. Nine hundred and fifteen (918) students, 388 teachers, 341 adults, 200 administrators of district education offices, and 40 administrators of environmental offices participated in this survey with a response rate of 89.7%. Results of this survey indicated the followings are needed to develop ecopark : natural resources and facilities, ecological educational program and its operation, human resource and professional development, and cooperation system with educational and environmental offices. On the basis of these results, the way of improvement was discussed and proposed.

• 한국환경과학회:학술대회논문집
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• 한국환경과학회 2003년도 International Symposium on Clean Environment
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• pp.123-126
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• 2003

This study was to analyze land use tendency of the apartment complexes in Banpo in Seoul, Bundang, and Keureng in Chungju. The results of this study were followings. The patterns of Land use in the apartment complexes have been diversified and open spaces have been increased since 1990. In addition, land use relating facilities also has been increased. In the apartment complexes in large cities, park spaces also have been increased. The results of this study indicated that the tendency of apartment complexes is not just residential areas but places for quality of life.

• 한국과학예술포럼
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• 제31권
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• pp.171-180
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• 2017

본 연구는 최근 건강, 웰빙에 대한 관심이 증가함에 따라, 공공의 다수가 이용하는 공공보건시설이 국민건강 증진에 기여하는 색채환경 구축을 위한 색채이미지 특성을 분석하여 공공보건색채 계획 및 지표개발의 데이터로 활용하고자 하는 것을 목적으로 한다. 이를 위하여 기존 관련 선행연구 결과를 종합하였고, 공공보건시설을 유형별로 의료시설(종합병원), 보건시설(보건소), 준치유시설(요양시설)로 구분하였다. 총 18곳의 공공보건시설을 직접 방문하여 측색기로 환경색채를 측색하여 환경색채이미지를 분석하였고, 이에 대한 결과 및 선행연구 결과와 비교분석하여 색채이미지 특성 및 향후 보완할 점들을 도출하였다. 결과는 다음과 같다. 첫 번째, 공공보건시설의 환경색채이미지 어휘와 관련된 선행연구에서는 편안하고 밝은 긍정적인 이미지를 선호하는 것으로 나타났다. 두 번째, 공공보건시설의 환경색채를 직접 측색한 결과, 대부분 Y계열의 고명도, 저채도 색상을 사용하고 있는 것으로 나타났다. 세 번째, 공공보건시설의 환경색채이미지 어휘를 분석한 결과, '내츄럴한' 이미지가 가장 높은 빈도를 나타내었고, 그 외 '은은한', '점잖은' 등의 이미지가 나타나고 있는데, 공공보건시설의 색채이미지어휘간의 특성을 파악하기가 어려웠다. 본 연구는 색채과학과 환경디자인 분야의 융합연구로서, 디자인과 관련된 다학제적 연구 범위를 넓혔으며, 사용자 감성 중심의 환경계획에 도움이 될 것으로 사료된다.

• 휴양 및 경관연구
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• 제12권4호
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• pp.67-78
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• 2018

Hangang Artpark construction is an enterprise founded in 2018 that involved installing public artworks created by 37 different people (teams) in Hangang Park located in Yeouido and Ichon Park. An iconic public space in Seoul, Hangang Park is turning into an even better public space due to the efforts to change the park into an eco-friendly, cultural-artistic space in tandem with the change in times. The objective of the Hangang Artpark construction business is to augment the environmental and scenic value of Hangang not only to provide a space for leisurely activities but also to revive it as a cultural-artistic area. This is a study of the concept and the design and installation processes of "Thinking of each other", a project by the Hangang Artpark construction business. This art piece has been installed in the wetlands and it trails along Ichon Hangang Park, which was created during the environmental recovery project. The piece consists of sculptures molded into animal shapes that are unique to the location and ecology of the area, displayed in harmony with the park's street furniture. By showing the coexistence of animals that existed in Hangang in the past along with the current inhabitants and the natural enemies of these inhabitants, the piece displays an ecofriendly scene. Moreover, by incorporating this piece into the street facilities of the park, such as gazebos, streetlights, surveillance cameras, and perches, the piece exhibits a different kind of street view compared to the installation style of other conventional environmental artworks. The various sculptures are installed along with the street facilities throughout the trail, rather than in a specific location intended for artworks, thereby achieving harmony with the park scene. In so doing, the piece elicits in the beholder an environment-friendly way of thinking, and at the same time, gives them a sense of calm and pleasure. Further, the paper researches the methods of safely installing art pieces in public spaces and of maintaining these installations.

• 한국조경학회지
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• 제30권6호
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• pp.79-97
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• 2003

The purpose of this paper is to analyze a causal model determining social carrying capacity(SCC) in natural parks, to answer the research question: What is the mechanism for determining SCC in natural parks (NP)\ulcorner After reviewing the literature on SCC and recreation activities in Korean natural parks, we constructed a conceptual framework and formulated the hypothesis of this research. We obtained data through a questionnaire which surveyed 487 visitors at 6 of the 73 NP in Korea during 2001, based on a stratified sampling method. We analyzed the data using descriptive statistical methods, the mean difference test, Pearson's correlation analysis, and path analysis method. We found that 1) The direct effect of resources, activity space(AS), visitor's expectation(VE), encounter, crowding, damage of resources(DR), maintenance condition of resources and facility(MCRF) to SCC are 3.45, 3.62, 2.75, 2.72, 1.32, and 4.77 times more important than that of crowding, respectively, while the indirect effect of resources, AS, VE, encounter, and DR to SCC is 13.03, 11.19, 3.34, 1.3, 2.05, 1.10, 0.05 and 2.30 times more important then that of crowding, respectively, 2) Causal effects of resources, facility, AS, VE, number of visitors(NV), encounter, crowding, VM, DR, and MCRF to SCC turned out to have 0.3523, 0.3321, 0.1751, 0.1465, 0.0307, 0.0762, 0.0604, -0.0510, -0.1177 and 0.2165, respectively, and 3) The causal effect of activity base(AB) and activity atmosphere(AA) to SCC turned out to have 2.57 and 1.1 times higher than that of MCRF, respectively. The research results suggest that 1) this conceptual framework is highly useful for the development of substantive theory and methodology; 2) management issues of AA and MCRF turned out to have 0.81 times in SCC that of AB, i.e, SCC can be significantly improved from control of AA and MCRF; and 3) supply of excellent resources and convenient facilities is needed to increase social carrying capacity. It is recommended that more empirical studies be performed in the future according to the season, visitor characteristics, and AS by NP.

• 한국산학기술학회논문지
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• 제22권2호
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• pp.468-474
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• 2021

산림치유는 산림의 다양한 자연 환경요소를 활용한 친자연적인 치유방식을 통해 인체의 면역력을 높이고 사회적으로 점차 심각해지는 정신적, 육체적 사회병리 현상을 치유함으로서 숲이 지닌 치유 기능으로 시민의 건강을 증진시키는 역할을 한다. 본 연구는 국내에서 운영 중인 총 28개소의 국·공립 치유의 숲의 산림치유 시설 운영 및 프로그램의 특성을 분석함으로서 향후 국내 산림치유의 발전을 위한 계획적 시사점을 제시하는데 목적을 두고 있다. 연구의 순서는 먼저 산림치유와 프로그램의 개념을 정의하고 현재 국내에서 운영 중인 치유의 숲을 규모별로 구분하며, 규모별 치유의 숲의 시설운영과 프로그램의 특성을 분석함으로서 향후 국내 산림치유의 발전방향을 제시한다. 연구 결과를 요약하면 다음과 같다. 첫째, 국내 치유의 숲은 '09년 최초 개장된 이후 점차 소규모화 되었는데, 이는 지자체의 경쟁적인 조성에도 원인이 있으며, 50-100ha 이하의 숲에서 치유시설 및 프로그램의 다양성이 부족하였다. 둘째, 치유 숲길의 확장, 치유센터 내 시설확대 및 숲속 치유공간의 다양화를 통해 노인, 임산부, 장애우 등 특수계층 대상 프로그램이 확대되어야 하고, 치유의 숲 지도자의 양성이 우선되어야 한다. 셋째, 중·대규모 숲에서는 숙박형 프로그램을 확대하고 지자체의 사용료 보조가 필요하며, 프로그램 개발과 시설을 연계시키고 산림치유시설의 조성기준을 명확히 하기 위한 제도적 보완이 수반되어야 한다.