• Title/Summary/Keyword: Abnormal weather

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이상기상 시 사일리지용 옥수수의 기계학습을 이용한 피해량 산출 (Damage of Whole Crop Maize in Abnormal Climate Using Machine Learning)

  • 김지융;최재성;조현욱;김문주;김병완;성경일
    • 한국초지조사료학회지
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    • 제42권2호
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    • pp.127-136
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    • 2022
  • 본 연구는 기계학습을 기반으로 제작한 수량예측모델을 통해 이상기상에 따른 사일리지용 옥수수(WCM)의 피해량 산정 및 전자지도를 작성할 목적으로 수행하였다. WCM 데이터는 수입적응성 시험보고서(n = 1,219), 국립축산과학원 시험연구보고서(n = 1,294), 한국축산학회지(n = 8), 한국초지조사료학회지(n = 707) 및 학위논문(n = 4)에서 총 3,232점을 수집하였으며 기상 데이터는 기상청의 기상자료개방포털에서 수집하였다. 본 연구에서 이상기상에 따른 WCM의 피해량은 WMO 방식을 준용하여 산정하였다. 정상기상에서 DMY 예측값은 13,845~19,347 kg/ha 범위로 나타났으며 피해량은 이상기온, 이상강수량 및 이상풍속에서 각각 -305~310, -54~89 및 -610~813 kg/ha 범위로 나타났다. 최대 피해량은 이상풍속에서 813 kg/ha로 나타났다. WMO 방식을 통해 산정한 WCM의 피해량은 QGIS를 이용하여 전자지도로 제시하였다. 이상기상에 따른 WCM의 피해량 산정시 데이터가 없어 공백인 지역이 존재하여 이를 보완하기 위해 종관기상대보다 많은 지점의 데이터를 제공하고 있는 방재기상대를 이용하면 보다 세밀한 피해량을 산정할 수 있을 것이다.

사면붕괴 피해저감을 위한 지질 DB 구축사레 (A case study on the DB using geological data for mitigation of slope failure)

  • 박성욱;김춘식;김양희;강인준;이수곤;윤용선
    • 한국측량학회:학술대회논문집
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    • 한국측량학회 2007년도 춘계학술발표회 논문집
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    • pp.277-281
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    • 2007
  • Quite a while ago, Organizations which have slope DB system was running slope of management in several. Frequently, Slope failure was happened by abnormal weather and limit of valuation system at the managed slope. Analysis of other organization slope DB systems is very important that slope DB system maintains same regions on geology. In Korea, slope DB system was running at KEC(Korea Expressway Corporation), Korail(Korea Railroad), and KIGAM(Korea Institute of Geoscience and Mineral Resources). We research theirs DB constructing. For reviewed slope DB system of other country, we searched NLIC(Natural Landslide Information Center)'s DB system in U.S.A., GEO's LPM(landslide Prevention Measures) program in Hongkong, DPRI' ILC(International Consortium on Landslides) program in Japan, and AGSO(Australian Geological Survey Organization)'s NGVUC program in Australia.

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Development of a System for Transmitting a Navigator's Intention for Safe Navigation

  • Hong, Taeho
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • 제14권2호
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    • pp.130-135
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    • 2014
  • For the past three decades, ship-to-ship collision accidents have steadily increased on the coast of South Korea by about 20% annually. Marine accidents have become more likely and more devastating in areas with increasing marine traffic and rising numbers of high-speed ships. Over 30% of the marine accidents in South Korea are concentrated in spring, since Korea's coast is often covered in dense fog at this time of the year. Fog is generated when a large temperature range exists within a day, and this daily temperature range has increased due to abnormal weather conditions. This research proposed a system for transmitting a navigator's intention utilizing electronic methods. A navigator's intention was expressed on the electronic navigation chart for easier understanding of the surrounding situation, and the effectiveness of the system was verified through practical tests.

Downscaling of MODIS Land Surface Temperature to LANDSAT Scale Using Multi-layer Perceptron

  • Choe, Yu-Jeong;Yom, Jae-Hong
    • 한국측량학회지
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    • 제35권4호
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    • pp.313-318
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    • 2017
  • Land surface temperature is essential for monitoring abnormal climate phenomena such as UHI (Urban Heat Islands), and for modeling weather patterns. However, the quality of surface temperature obtained from the optical space imagery is affected by many factors such as, revisit period of the satellite, instance of capture, spatial resolution, and cloud coverage. Landsat 8 imagery, often used to obtain surface temperatures, has a high resolution of 30 meters (100 meters rearranged to 30 meters) and a revisit frequency of 16 days. On the contrary, MODIS imagery can be acquired daily with a spatial resolution of about 1 kilometer. Many past attempts have been made using both Landsat and MODIS imagery to complement each other to produce an imagery of improved temporal and spatial resolution. This paper applied machine learning methods and performed downscaling which can obtain daily based land surface temperature imagery of 30 meters.

수리특성을 고려한 수로터널 설계 (Design Consideration for Tunnel Spillway related to Hydraulic Characteristics)

  • 윤동덕;김태혁;이중우;오명렬
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2006년도 추계 학술발표회
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    • pp.161-168
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    • 2006
  • The recent unpredictable weather condition, especially abnormal heavy precipitation which is on the verge of PMF, made implement more rigorous design standard. Following these trends, the idea of additional auxiliary spillway, most of them are tunnel around existing one, is adopted to many sites. Tunnel spillway, having free water table is generally consisted of several compartments such as inlet, transition, inclined, curved and stilling parts. It may has some technical problems to be considered. Among them, the surface deterioration due to cavitation is reported many times in the part of irregularities on lining. Including this kind of problem, several technical considerations for tunnel spillway will be handled in this paper during design procedure.

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재난·안전 관리 및 표준화 동향에 관한 연구 (A Study on the Disaster Safety Management and Standardization Trends)

  • 강희조
    • 한국항행학회논문지
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    • 제13권5호
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    • pp.799-804
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    • 2009
  • 본 논문에서는 인구의 증가, 도시의 거대화, 교통의 발달 이상기후 등으로 인한 재해 재난이 급증하고 피해규모도 점차 확대되고 있는 상황에서 재난관리를 통한 국민의 행복과 안정된 삶을 확보하는데 필요한 재난 안전 관리 시스템을 방재선진국의 시스템을 분석하여 재난 안전 관리에 대한 개선방안과 시사점을 도출하고자 한다. 또한 국내외 재난관련 표준화 동향을 통하여 재난관리 활동의 효율성을 높이고자 한다.

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건설공사 비탈면 유지관리에 관한 연구 (A Study on the Standard Management spectrum for the Cut Slope)

  • 신관영;김용수;장범수;신창건
    • 한국지반공학회:학술대회논문집
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    • 한국지반공학회 2005년도 춘계 학술발표회 논문집
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    • pp.781-787
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    • 2005
  • Recently, disaster that is earthquake, sever rainstorm and the tidal wave were increased by abnormal weather. These influence which is the slope stability of the completed slope as well as under construction slope is affected by disaster. But the management standard for the construction slope is incomplete. Also, the standard connected with construction slope is not integrated with the important public paper organic enemy and it is duplicated and the standards which conflict are being scattered. In this research which it sees consequently the inside and outside of the country construction slope the maintenance civil official relation law and standard investigation it leads and the problem point and a improvement program of management criterion and to sleep the construction slope which is suitable in domestic actuality it prepares and propose.

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소아자반에 관한 동서의학적 문헌적 고찰 (The Liturature Study of Purpura (In comparison with Purpura of Adult))

  • 김윤희;한재경;김윤희
    • 혜화의학회지
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    • 제13권1호
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    • pp.183-195
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    • 2004
  • Objective: The aim of this study was to investigate the concept of purpura in the western and oriental medicine. Method: We surveyed the western and oriental medical books from to recent published books. Result and Conclusion: The cause of purpura is devided into two branchs. One is sthenia syndrome includes stomach-heat, blood-heat and abnormal weather in four seasons. The other is asthenia syndrome includes deficiency of stomache energy, spleen asthenia and deficiency of Yin. In children, the cause of purpura is improper diet, inherent defect and the above things. The treatment of oriental medicine is classified into herbal medication, acupuncture therapy and external treatment

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동해안 이상 너울 추산에 관한 고찰 (Examinations on the Wave Hindcasting of the Abnormal Swells in the East Coast)

  • 김태림;이강호
    • 한국해양공학회지
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    • 제22권6호
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    • pp.13-19
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    • 2008
  • Abnormally large swells that appeared on the coast of the East Sea in October in 2005 and 2006 were simulated using SWAN model to examine the accuracy of the model for future forecasting Seawind data calculated based on the weather chart ant bottom topography were used for input data, and the model was operated more than 20 days before the observed swells to avoid the problems from the cold start of the model. The comparisons with observed wind and wave data were unsatisfactory and neededmore improvement in terms of swell component in the wave model as well as the quality of seawind data. The satellite wind and wave data can be good candidates for future comparison of the wave model results in the East Sea.

전압제어형 센서를 이용한 스마트 콘크리트의 개발 (Development of the Smart Concrete Using the Voltage Control Type Sensor)

  • 김이성;이수곤;김화중
    • 한국콘크리트학회:학술대회논문집
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    • 한국콘크리트학회 2005년도 봄학술 발표회 논문집(II)
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    • pp.169-172
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    • 2005
  • Today, peoples have much interest about safety while an abnormal weather phenomenon is weighted increased. R.C buildings are consisting of main loaded members. Concrete are brittle materials and they are which come to brittle fracture rapidly by progress of cracks. With the exchange of such research in inside and outside of the country, the structure measurement method of having used PZT and the optical fiber (FBG) will be the actual condition which has accomplished the stock. Specially, seismic activity that gives damage to construction and members happens in on time. Therefore, the purpose of this study is the fundamental research which detects damagesof main members using the compound sensor which consisted of the radio sensors of resistance, PZT, and FM system.

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