• 한국수자원학회논문집
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• 제39권6호
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• pp.521-531
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• 2006

본 논문은 최근 발생한 집중호우와 이상강우를 고려하며 인천지역에서 사용중인 확률강우강도식에 대한 새로운 확률강우강도식을 제안하였으며, 기상청 자료를 이용하여 지속시간 10분$\sim$24시간까지의 임의시간 연최대강우량을 산정하였다. 강우지속기간별 확률강우량을 추정하기 위하여 개의 확률분포형을 적용하였으며 Chi-square 검정방법, Kolmogorov-Smirnov 검정방법, framer Von Mises 검정방법으로 적합도 검정과 함께 최근 강우에 대한 경향을 분석하고 실제 발생한 강우 중에서 최대 발생 강우량을 고려하여 적정분포인 GEV 분포를 확률 분포형으로 선정하였다. 확률강우강도식은 최소자승법을 사용하여 Talbot형, Sherman형, Japanese형, 통합형 I 및 II 형태로 산정하였고, 지역내 하수도 및 하천의 지속시간을 감안하여 확률강우강도식을 결정하였다. 또한 정확성을 고려하여 통합형 I을 선택하였고 지속시간에 따른 강우강도식의 확률강우와 관측치를 감안한 강도식을 인천지역의 강우강도식으로 제안하였다.

• 한국조경학회지
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• 제43권4호
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• pp.112-123
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• 2015

본 연구의 목적은 비오톱 유형화 방법분석, 우점 비오톱 유형분석, 도시별 인문 자연 환경적 특성분석 및 군집분석을 통해, 국내 도시 비오톱 유형 특성을 분석하고, 전국적으로 적용 가능한 국내 도시 비오톱 유형 체계를 설정해 보는데 가장 큰 의의를 두었다. 연구결과를 요약하면 다음과 같다. 먼저 비오톱 유형화 방법 분석 결과, 분류기준 및 분류위계에서 도시마다 차이를 보이고 있었다. 다음으로 우점 비오톱 유형 분석 결과, 대부분의 도시에서 가장 많은 면적을 차지하고 있는 유형은 산림인 것으로 나타났다. 도시별 특성분석 결과, 도시들마다 상이한 결과를 보이고 있었으며, 군집분석 결과, 도시들은 총 5개의 군집으로 분류되었다. 먼저 Cluster-A의 경우, 낮은 인구수 및 도시화 현황을 보이고 있었다. 또한 타 도시와는 달리 농경지의 면적비율이 가장 높게 나타났다. 더불어 Cluster-C의 경우, 매우 높은 도시화 현황 및 인구수를 가지고 있었으며, 이러한 특성을 바탕으로, '산림 비오톱 중심의 광역형 도시(Large-sized metropoilitan cities-center of forest biotope area)' 군집으로 명명하였다. 이상과 같은 본 연구의 결과는 기존 비오톱 지도의 수정 및 보완 그리고 새로운 비오톱 지도 작성 시 표준화된 비오톱 유형 체계를 바탕으로 혼란을 최소화함은 물론, 도시 특성에 맞는 유형의 세분화 및 보전이 가능하도록 하는데, 중요한 역할을 수행할 수 있을 것으로 판단된다.

• 한국전자파학회:학술대회논문집
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• 한국전자파학회 2003년도 종합학술발표회 논문집 Vol.13 No.1
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• pp.243-248
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• 2003

This paper is contents on that construct ultra high speed wireless communication cell backbone net of city using of wireless communication transceiver for millimeter wave band. A new type of 60GHz wave band wireless transceiver using NRD waveguide. This 60GHz transceiver has excellent signal's absorption characteristics of oxygen molecule than the other millimeter wave bands. We constructed service networks to cell interval within about 500m to 3Km laying stress on wireless backbone node using 60GHz transceivers, and did it so that city type wireless communication cell backbone networks of 155.52Mbps ATM(OC-3) may be possible. The possible use of wireless backbone networks technology in a rainy day and a clear day was evaluated at 1Km data link distance. We can measured bit error rate(BER). BER is $10^{-11}$ at 155.52Mbps ATM(OC-3) in a clear day and $10^{-6}$ in a heavy rain more than 35mm per time. Also, we constructed wireless cell backbone networks distance to use several 60GHz transceivers and investigated data transmission rate between main center and local center of long distance. In proposed wireless cell backbone networks, the data throughput was approximately 80Mbit/sec. Therefore, if use transceiver, it is possible that city type ultra high speed wireless communication cell backbone networks construction of 100Mbps, 155.52Mbps, 622Mbps, 1Gbps and 1.2Gbps degrees.

• Parasites, Hosts and Diseases
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• 제53권4호
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• pp.493-496
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• 2015

Toxoplasmosis, caused by Toxoplasma gondii, is a parasitic zoonosis with worldwide distribution. The present study investigated the prevalence of T. gondii in dogs in Zhanjiang city, southern China, using both serological and molecular detection. A total of 364 serum samples and 432 liver tissue samples were collected from the slaughter house between December 2012 and January 2013 and were examined for T. gondii IgG antibody by ELISA and T. gondii DNA by semi-nested PCR based on B1 gene, respectively. The overall seroprevalence of T. gondii IgG antibody was 51.9%, and T. gondii DNA was detected in 37 of 432 (8.6%) liver tissue samples. These positive DNA samples were analyzed by PCR-RFLP at 3'- and 5'-SAG2. Only 8 samples gave the PCR-RFLP data, and they were all classified as type I, which may suggest that the T. gondii isolates from dogs in Zhanjiang city may represent type I or type I variant. This study revealed the high prevalence of T. gondii infection in dogs in Zhanjiang city, southern China. Integrated measures should be taken to prevent and control toxoplasmosis in dogs in this area for public health concern.

• 문화기술의 융합
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• 제7권1호
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• pp.327-335
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• 2021

본연구는 도시 유휴공간 유형화를 통한 도시 내 정원 조성을 위한 새로운 공간 형태와 특성을 발굴하여 향후 정원 조성 시 활용가능한 가이드라인의 제시 및 그린인프라 확충의 기초자료 구축을 목표로 진행하였다. 그 결과, 도시의 유휴공간은 4개의 유형으로 분류되는 것을 알 수 있었으며, 각 유형별 조성방안에는 차별화를 두어야 한다고 판단하였다. 이러한 본 연구의 성과는 지역사회의 재개발을 통해 지역 사회 혜택 및 도시재생의 기회를 제공하고 지역주민의 건강과 웰빙을 지원할 수 있는 잠재적인 도시생태계서비스의 원천이 될 수 있으며 귀중한 도시경관자원이 될 수 있다. 또한, 도시 유휴공간은 도시생태계의 건강을 지원하고 도시 주민의 삶의 질을 향상시키는 데 사용될 수 있는 그린인프라의 역할로서 소중한 자원이 될 수 있다.

• 한국조경학회지
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• 제30권1호
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• pp.1-10
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• 2002

The purpose of this article is to examine land use change in the fringe area of a metropolitan city through multi-temporal data analysis. Change detection has been regarded as one of the most important applications for utilization of remotely sensed imageries. Conventionally, two images were used for change detection, and Arithmetic calculators were generally used on the process. Meanwhile, multi-temporal change detection for a large number of images has been carried out. In this paper, a digital land-use map and three Landsat TM data were utilized for the multi-temporal change detection Each urban area map was extracted as a base map on the process of multi-temporal change detection. Each urban area map was converted to bit image by using boolean logic. Various urban change types could be obtained by stacking the urban area maps derived from the multi-temporal data using Geographic Information System(GIS). Urban change type map was created by using the process of piling up the bit images. Then the urban change type map was compared with each land cover map for the change detection. Dalseo-gu of Daegu city and Hwawon-eup of Dalsung-gun, the fringe area of Daegu Metropolitan city, were selected for the test area of this multi-temporal change detection method. The districts are adjacent to each other. Dalseo-gu has been developed for 30 yeais and so a large area of paddy land has been changed into a built-up area. Hwawon-eup, near by Dalseo-gu, has been influenced by the urbanization of Dalseo-gu. From 1972 to 1999, 3,507.9ha of agricultural area has been changed into other land uses, while 72.7ha of forest area has been altered. This agricultural area was designated as a 'Semi-agricultural area'by the National landuse Management Law. And it was easy for the preserved area to be changed into a built-up area once it would be included as urban area. Finally, the method of treatment and management of the preserved area needs to be changed to prevent the destruction of paddy land by urban sprawl on the urban fringe.

• Journal of Electrical Engineering and Technology
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• 제13권1호
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• pp.513-520
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• 2018

Since Paris Climate Change Conference in 2015, many policies to reduce the emission of greenhouse gas have been accelerating, which are mainly related to renewable energy resources and micro-grid. Presently, the technology development and demonstration projects are mostly focused on diversifying the power resources by adding wind turbine, photo-voltaic and battery storage system in the island-type small micro-grid. It is expected that the large-scaled micro-grid projects based on the regional district and town/complex city, e.g. the block type micro-grid project in Daegu national industrial complex will proceed in the near future. In this case, the economic cost or the carbon emission can be optimized by the efficient operation of energy mix and the appropriate construction of electric and heat supplying facilities such as cogeneration, renewable energy resources, BESS, thermal storage and the existing heat and electricity supplying networks. However, when planning a large residential town or city, the concrete plan of the energy infrastructure has not been established until the construction plan stage and provided by the individual energy suppliers of water, heat, electricity and gas. So, it is difficult to build the efficient energy portfolio considering the characteristics of town or city. This paper introduces an energy mix optimization(EMO) method to determine the optimal capacity of thermal and electric resources which can be applied in the design stage of the real large-scaled residential town or city, and examines the feasibility of the proposed method by applying the real heat and electricity demand data of large-scale residential towns with thousands of households and by comparing the result of HOMER simulation developed by National Renewable Energy Laboratory(NREL).

• 한국주거학회논문집
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• 제22권5호
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• pp.71-80
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• 2011

The purpose of this study is to investigate the present status of dwelling spaces and deduct sustainable elements in transformation of them by comparing the restored drawings with the surveyed drawings focused on traditional houses that exist in the urban area of cheongju city in Korea. In alteration and extension of these traditional houses, scale of a private room became larger as it has been connected and expanded, the exterior main hall (Daecheong) became the interior living room, and the conventional kitchen was westernized and changed from K type to DK or LDK type. The toilet located at outside was installed by the attached aisle (Toetgan) inside and the existing room. The extension was completed with equipments, storage space, and rental accommodation. The conservative and sustainable elements in the various transformation of them are as follows. Firstly, it was to maintain 3 rooms such as main room (anbang)-main hall (daecheong)-detached room (gunnunbang). Secondly, it was to sustain the circulation of kitchen and arrangement of the - type worktable even though it was westernized. Thirdly, extension of storage space was completed less than 600 mm within the eaves. Although there were functionally and structurally many changes in 18 houses, 4 houses had maintained wooden floor of main hall, 5 houses long planked wooden floor of the attached aisle, and 12 houses rafter ceiling of the main hall and the attached aisle.

• 한국농공학회논문집
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• 제52권5호
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• pp.97-108
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• 2010

The objective of this study is to develop evaluation indices which can be applied to analyze rational rehabilitation-policy directions of redundant farmlands. To achieve this objective, the main tasks of this research are 1) categorizing the redundant farmlands rehabilitation types 2) developing the evaluation indices of redundant farmlands rehabilitation 3) determining the weights of each index. The redundant farmlands rehabilitation types were classified into agricultural rehabilitation type, non-agricultural rehabilitation type and hybrid type which are called by agricultural income model, rural environment improvement model and hybrid model as development project name, respectively. The 5 parts and 21 indices for evaluation of redundant farmlands rehabilitation directions were extracted by case studies and experts brainstorming. The weights of each index were determined by Analytic Hierarchy Process (AHP). The developed evaluation indices were applied to study areas located on Yanghwa district of Gongju-city and Aewol district of Jeju-city. From the results of this study, it was ascertained that the evaluation indices developed in this study would help the decision-makers in the planning process of redundant farmlands rehabilitation directions.

• 한국도서관정보학회지
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• 제38권3호
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• pp.455-475
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• 2007

최근의 도서관 변화의 가장 큰 특징으로 먼저 이용자의 변화를 들 수가 있는데 평일의 학생이용중심에서 주부, 무직자, 고령자 이용과 휴일에는 가족동반이용 등으로 이용자의 속성이 변화하고 있고 이에 따라 체재형도 서관이라고 하는 새로운 개념의 도서관이 출현하여 이용자의 속성에 대응하는 형태로 독서서비스를 제공하고 있다. 본 연구는 체재형 도서관으로의 이행시기에 있는 도심의 공공도서관을 대상으로 도서관내에서의 가족의 이용행동 조사하여 가족이용유형의 구성특징 및 공간구성과의 상관관계를 분석하고 비독서행위에 대하여 고찰을 행하였다.