• Title/Summary/Keyword: Dong District

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A Comparative Study on the Landscape Planning System of Asia (아시아의 경관계획제도 비교 및 경관교육 추진)

  • Baek, Tae-Kyung;Yamashita, Sampei
    • Journal of the Korean Association of Geographic Information Studies
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    • v.16 no.1
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    • pp.26-35
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    • 2013
  • This study is to compare and analyze the current status of landscape planning system in Korea and Japan by establishing the landscape database utilizing geographic information system(GIS). Specifically, landscape laws and their ordinances enacted in Korea and Japan and their implementation cases were compared to identify the characteristics. As of December 1, 2010, landscape administrative bodies are composed of 472 local governments in Japan while as of March 1, 2010, they are 83 local governments in Korea. The landscape laws in Korea and Japan have a similar structure overall. However, there are no supplementary provision and penal provision in the Korean landscape law whereas there is landscape district provision in the Japanese landscape law. The results of this study would be used as a base for building up the landscape planning and policy in the East Asian region.

Estimation Method of the Design Wind Load of Soundproof Wall Using GIS (GIS를 이용한 방음벽의 설계풍하중 산정방법)

  • Lee, Dong-Ho;Choi, Se-Hyu
    • Spatial Information Research
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    • v.23 no.5
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    • pp.75-85
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    • 2015
  • Recently deformed or destroyed of soundproof wall by local winds and typhoon has increased. This research proposed the estimation method of the design wind load of soundproof wall using spatial information analysis based on 1:5,000 digital map and performed comparative analysis with actual application cases. According to the result of quantitative evaluation using GIS, the surface roughness in the downtown area packed with buildings was III and the surface roughness in the suburban district with a relatively small number of buildings was II and the surface roughness in the district packed with open areas and typical farmhouses was I. This shows that the wind load of the soundproof walls reflecting the actual surface conditions was estimated. If the quantitative GIS analysis presented in this study is applied to wind-resistant design of soundproof walls, it is supposed that this will be helpful in more rational wind-resistant design by remedying the existing problem in which the wind load varies depending on designer's subjectivity.

1D Proton NMR Spectroscopic Determination of Ethanol and Ethyl Glucuronide in Human Urine

  • Kim, Siwon;Lee, Minji;Yoon, Dahye;Lee, Dong-Kye;Choi, Hye-Jin;Kim, Suhkmann
    • Bulletin of the Korean Chemical Society
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    • v.34 no.8
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    • pp.2413-2418
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    • 2013
  • Forensic and legal medicine require reliable data to indicate excessive alcohol consumption. Ethanol is oxidatively metabolized to acetate by alcohol dehydrogenase and non-oxidatively metabolized to ethyl glucuronide (EtG), ethyl sulfate (EtS), phosphatidylethanol, or fatty acid ethyl esters (FAEE). Oxidative metabolism is too rapid to provide biomarkers for the detection of ethanol ingestion. However, the non-oxidative metabolite EtG is a useful biomarker because it is stable, non-volatile, water soluble, highly sensitive, and is detected in body fluid, hair, and tissues. EtG analysis methods such as mass spectroscopy, chromatography, or enzyme-linked immunosorbent assay techniques are currently in use. We suggest that nuclear magnetic resonance (NMR) spectroscopy could be used to monitor ethanol intake. As with current conventional methods, NMR spectroscopy doesn't require complicated pretreatments or sample separation. This method has the advantages of short acquisition time, simple sample preparation, reproducibility, and accuracy. In addition, all proton-containing compounds can be detected. In this study, we performed $^1H$ NMR analyses of urine to monitor the ethanol and EtG. Urinary samples were collected over time from 5 male volunteers. We confirmed that ethanol and EtG signals could be detected with NMR spectroscopy. Ethanol signals increased immediately upon alcohol intake, but decreased sharply over time. In contrast, EtG signal increased and reached a maximum about 9 h later, after which the EtG signal decreased gradually and remained detectable after 20-25 h. Based on these results, we suggest that $^1H$ NMR spectroscopy may be used to identify ethanol non-oxidative metabolites without the need for sample pretreatment.

A Study on the Optimal Accessibility and Location of the Comprehensive Support Institution for Senior Citizens (노인중심 종합지원기관의 적정 접근성 및 입지에 관한 연구)

  • Kim, Mi-ran;Lee, Kyung Hoon
    • Journal of the Architectural Institute of Korea Planning & Design
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    • v.36 no.3
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    • pp.21-30
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    • 2020
  • This study explores institutions that provide comprehensive services to senior citizens, including welfare, healthcare, and housing support. These institutions can be defined as centers that offer continual care and carry out policies related to senior citizens. In such institutions, senior citizens have access to information about aging and senior services. First, this study reviewed prior research on senior comprehensive support institutions and their accessibility, and the data led to several findings about the needs of the senior citizens and the proper locations of senior comprehensive support institutions. And this study used surveys to gather information on senior citizens' perceptions of services at such institutions. The survey results indicated that the elderly agreed with the priorities of comprehensive support institutions, and that it would be more convenient to visit such institutions if there were more than one per Dong (administrative district of Seoul). In response to these results, the ideal radius of each administrative district in the metropolitan area of Korea was investigated. Finally, the study also discussed the adequacy of this distance in comparison to that of current institutions in Japan. Combining these results, the study concludes that comprehensive support institutions for the citizens should be created and suggests appropriate distances and locations of such institutions.

An Analysis on Micro-climate Characteristic of Apartments in Beijing, China Using ENVI-met Simulation (ENVI-met를 이용한 중국 베이징 아파트 하절기 미기후 특성 분석)

  • Wu, Jin-Dong;Lee, Jun-Hoo;Yoon, Seong-Hwan
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.35 no.8
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    • pp.169-176
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    • 2019
  • The purpose of this study was to analyze outdoor thermal comfort of apartments planning characteristic of pedestrian height in Beijing, China. Selecting 322 apartment complexes with more than 1000 households and more than 10 buildings(including 10 buildings), mainly in Chaoyang District and Tongzhou District to select 32 basic layout types and then 12 typical layout types were select in 32 basic layout types. Finally, the simulation was conducted for the 12 typical layout types using the micro-climate model ENVI-met to evaluate the wind environment, the thermal environment and the comfort. The results of this study as follows: In the parallel arrangement, it has the best outdoor thermal comfort of Slab-East-Parallel(S/E/P). Next is Slab-South-Parallel(S/S/P), Tower-South-Parallel(T/S/P) in turn. In the stagger arrangement, Mixture-South-North and South Stagger-1(M/S/NSS-1) has the best outdoor thermal comfort and Slab-South-North and South Stagger(S/S/NSS), Tower-South-North and South Stagger(T/S/NSS), Mixture-South-North and South Stagger-3(M/S/NSS-3), Mixture-South-North and South Stagger-4(M/S/NSS-4), Mixture-South-North and South Stagger-2(M/S/NSS-2) in turn. In the cluster arrangement, Mixture-Mixture-Cluster-2(M/M/C-2) has the best outdoor thermal comfort and Mixture-Mixture-Cluster-3(M/M/C-3), Mixture-Mixture-Cluster-1(M/M/C-1) in turn. Due to the low wind speed and high air temperature, it is necessary to consider the layout types that can form the wind road at first, such as Mixture-South-North and South Stagger-1(M/S/NSS-1), Slab-South-North and South Stagger(S/S/NSS) and so on.

Characteristics of Non-point Pollution Runoff in Mandae, Gaa, and Jaun Districts and Evaluation of Reduction Projects (만대·가아·자운지구 비점오염 유출특성 분석 및 저감사업 평가)

  • Woo, Soo-Min;Kum, Dong-Hyuk;Hong, Eun-Mi;Lim, Kyoung-Jae;Shin, Min-Hwan
    • Journal of The Korean Society of Agricultural Engineers
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    • v.64 no.1
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    • pp.65-77
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    • 2022
  • Due to muddy water from the highland fields upstream of Soyangho Lake, the Mandae, Gaa, and Jawoon have been redesignated as NPS management areas. This study aims to evaluate the adequacy and supplementation points of the implementation plan by analyzing the operation status of muddy water generation and reduction facilities through on-site investigations by NPS management area to achieve the effective nonpoint pollution reduction goal in the implementation of the implementation plan established in 2020. The SS load calculated based on the survey results from July to October 2019 from 2017 showed a decreasen in 2019 compared to 2017. Both and the Jawoon were analyzed to have decreased. However, the amount of precipitation also decreased by about 27%, so it was judged that the effect of the reduction project was not significant. As a result of the detailed investigation of abatement facilities, about 86% of the 793 facilities installed in the management area were evaluated as 'good'. As a result of a detailed investigation by subwatersheds, subwatersheds 105 and 106 in the Mandae were analyzed as apprehensive subwatersheds. appeared to fall. In addition, it was analyzed that the effect of reducing muddy water in the Mandae district was insufficient due to the high ratio of leased farmers, lack of efforts to reduce turbid water in leased farmland, conversion to annual crops, and neglect of bare land. In the case of Gaa district, although the abatement facilities are concentrated in the upstream, muddy water was also found to be severe.

Eco-Friendly Residential District Plan Based on Site Suitability Analysis for Solar Energy - A Case Study of Daegu - (태양광 적지분석에 기반한 친환경 주거단지 계획 - 대구광역시를 대상으로 -)

  • SON, Jeong-Min;EUM, Jeong-Hee
    • Journal of the Korean Association of Geographic Information Studies
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    • v.20 no.3
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    • pp.153-169
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    • 2017
  • The purpose of this study was to determine a suitable site using GIS for solar energy harvesting for an administrative district in Daegu, which aims at becoming a solar-powered city. From this result, the ecological housing complex was planned on a solar theme in the real site. For this analysis, various indicators and standards were selected based on previous studies and the indicators were divided into the location, exclusion, and class condition. The results showed that the suitable area was $153.95km^2$ and 17.6% for Daegu area, and the highest suitable area appeared to Dalseong-gun. Finally, using suitable site analysis results, we selected the site of Sinseo housing area in Dong-gu and we planned the ecological housing complex for solar energy. This study can be used as base data for the Daegu solar business and its establishment by considering various indicators for analysis of suitable areas in solar energy. Also, the result of the ecological housing complex plan would be helpful in promoting Daegu as a solar-powered city.

An Efficient Location Encoding Method Based on Hierarchical Administrative District (계층적 행정 구역에 기반한 효율적인 위치 정보 표현 방식)

  • Lee Sang-Yoon;Park Sang-Hyun;Kim Woo-Cheol;Lee Dong-Won
    • Journal of KIISE:Databases
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    • v.33 no.3
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    • pp.299-309
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    • 2006
  • Due to the rapid development in mobile communication technologies, the usage of mobile devices such as cell phone or PDA becomes increasingly popular. As different devices require different applications, various new services are being developed to satisfy the needs. One of the popular services under heavy demand is the Location-based Service (LBS) that exploits the spatial information of moving objects per temporal changes. In order to support LBS efficiently, it is necessary to be able to index and query well a large amount of spatio-temporal information of moving objects. Therefore, in this paper, we investigate how such location information of moving objects can be efficiently stored and indexed. In particular, we propose a novel location encoding method based on hierarchical administrative district information. Our proposal is different from conventional approaches where moving objects are often expressed as geometric points in two dimensional space, (x,y). Instead, in ours, moving objects are encoded as one dimensional points by both administrative district as well as road information. Our method is especially useful for monitoring traffic situation or tracing location of moving objects through approximate spatial queries.

A Study on Fujian Ships and Fujian Maritime Merchants ("복선(福船)"과 복건해상(福建海商)에 관한 연구(硏究))

  • Cui, Yun-Feng;Yu, Yao-Dong
    • Journal of the Korean Society of Marine Environment & Safety
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    • v.13 no.4
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    • pp.101-105
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    • 2007
  • The people who lived in Fujian district along the south-eastern coast of China long ago began to construct ships and go fishing. For this reason, they grasped sound navigation skills and gained rich navigation experience. These skills and experience laid basis for the following large-scale overseas trade. In the Tang dynasty, with the development of economy, the people who lived in Fujian district started to leave home town and engage in overseas trade. In the Song dynasty and the Yuan dynasty, with the fast development of overseas communication, more and more Fujian maritime merchants, navigating the Fujian ships which were safe, fast and could arrive at destination on time, engaged in overseas trade. The Fujian ships made it possible for the Fujian maritime merchants to shorten trade time, catch business opportunity, level up the chance of success in trade and make full use of capital. As a result of this, Fujian maritime merchants gained fast development and they reached far areas such as eastern Asia, south-eastern Asia, southern Asia, and eastern Africa. This study deals with the issues such as the reasons for the development of Fujian maritime merchants, the trade engaged in by Fujian maritime merchants, the Fujian ships which played a decisive role in the overseas trade of Fujian maritime merchants.

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Prediction of Performance Characteristics with Various Location of Waste Heat Recovery Heat Pump in a Gwang-gyo Cogeneration Plant (냉각수 활용 히트펌프 설치 위치에 따른 광교 열병합발전소의 성능 특성 예측)

  • Park, Heun-Dong;Heo, Ki-Moo;Yoon, Sung-Hoon;Moon, Yoon-Jae;Yoo, Ho-Sun;Lee, Jae-Heon
    • Plant Journal
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    • v.10 no.2
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    • pp.28-37
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    • 2014
  • Recently, it is considered that environment and energy are critical issues all over the world. In power generation sector in Korea, almost power stations are constructed and operated as cogeneration plants in conformity with this trend. KDHC(Korea District Heating Corporation) goes one step further adopting renewable energy technology like heat pump using wasted heat for energy-saving and environment improvement. This study investigates the performance characteristics by the location of waste heat recovery heat pumps of 5 Gcal/h capacity in 150 MW-class Gwang-gyo cogeneration plant using commercial software 'THERMOFLEX'. Prior to analysis, the simulations are performed with actual operation data, and then the validation of simulations is verified by checking the error within 2%. After verification, the simulations are carried out with 3 locations and the effect on electrical power output and heat output is analyzed. As a result, overall efficiency of cogeneration plant is the highest in the case of heat pump located before DH(District Heating) Heater because of the largest increase of heat output despite of decrease of electrical power output.

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