• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
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• pp.397-400
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• 2007

For mapping the distribution of heavy metals in the mining area, field spectroscopy and hyperspectral remote sensing were used in this study. Although heavy metals are spectrally featureless from the visible to the short wave infrared range, possible variations in spectral signal due to heavy metals bound onto minerals can be explained with the metal binding reaction onto the mineral surface. Variations in the spectral absorption shapes of lattice OH and oxygen on the mineral surface due to the combination of heavy metals were surveyed over the range from 420 to 2400 nm. Spectral parameters such as peak ratio and peak area were derived and statistically linked to metal concentration levels in the streambed samples collected from the dry stream channels. The spatial relationships between spectral parameters and concentrations of heavy metals were yielded as well. Based on the observation at a ground level for the relationship between spectral signal and metal concentration levels, the spectral parameters were classified in a hyperspectral image and the spatial distribution patterns of classified pixels were compared with the product of analysis at the ground level. The degree of similarity between ground dataset and image dataset was statistically validated. These techniques are expected to support assessment of dispersion of heavy metal contamination and decision on optimal sampling point.

• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2002년도 춘계학술대회 논문집
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• pp.257-262
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• 2002

Numerical model introduced in this study combines wave refraction-diffraction, breaking, bottom friction, lateral mixing, and critical shear stress and three sub-models for simulating waves, currents, and bottom change were briefly discussed. Simulations of beach processes and harbor sedimentation were also described at the coast neighboring Bangpo Harbor, Anmyundo, Chungnam, where the area has suffered from accumulation of drifting sand in a small fishing harbor with a wide tidal range. We also made model test for the case of a narrow tidal range at Nakdong river's estuary area to understand the effect of water level variation on the littoral drift. Simulations are conducted in terms of incident wave direction and tidal level. Characteristics of wave transformation, nearshore current, sediment transport, and bottom change are shown and analyzed. We found from the simulation that the tidal level impact to the sediment transport is very important and we should apply the numerical model with different water level to analyze sediment transport mechanism correctly. Although the model study gave reasonable description of beach processes and harbor sedimentation mechanism, it is necessary to collect lots of field observation data, including waves, tides and bottom materials, etc. for better prediction.

• 한국보육지원학회지
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• 제11권5호
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• pp.91-111
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• 2015

본 연구에서는 유아가 오감을 이용한 벼 관찰활동을 통해 유아의 과학과정기술이 어떻게 변화하는지 살펴보고자 실시되었다. 연구참여자는 경기도 오산시에 소재한 Y어린이집에 재원중인 만3세 유아 10명이었다. 유아의 과학과정기술의 변화를 살펴보기 위하여 Spradley(1980)의 참여관찰 분석과정을 최정열(2000)이 수정 보완한 분석과정을 사용하였다. 분석자료에는 유아 인터뷰 자료, 유아관찰일지, 교사 관찰기록 등이 사용되었다. 연구결과 오감을 이용한 벼 관찰활동은 유아의 과학과정기술에 긍정적인 효과가 있는 것으로 나타났다. 유아는 초기에 비해 후기로 갈수록 벼에 대해 예측하기, 관찰하기, 분류하기, 비교하기, 측정하기 능력이 향상되었다. 본 연구결과는 유아의 과학적 사고 신장을 위한 교수방법의 기초자료로 활용될 수 있을 것이다.

• 한국산림과학회지
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• 제94권5호통권162호
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• pp.307-312
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• 2005

This study aimed to develop an agroforestry technology through the participation of local people. The study was conducted in the Makiling Forest Reserve (MFR) of the University of the Philippines Los Banos (UPLB). Diagnosis and Design (D&D) methodology was employed to plan and implement effective research and development projects. Diagnostic interview and direct field observation were conducted to identify the significance of the land-use system and to understand how the system works. As a result of the diagnostic interview and direct field observation in San Vicente, old coconut-based land-use system is shifting to mahogany-based agroforestry system. One of the reasons is due to the very complicated socio-economic and silvicultural factors including lower price of coconut farm products, industry development, lack of labor force, and pest and diseases. Change in land use brought about by the shifting to mahogany-based farming system is slow. Also, mahogany trees are observed to be not well-maintained. However, mahogany based land use system gives farmers' a bigger income as well as environmental benefit. Farmer's cooperation and local forestry policy for CDM were proposed to encourage people's self-restoration effort.

• 대한원격탐사학회지
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• 제36권5_4호
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• pp.1139-1151
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• 2020

국립재난안전연구원에서는 인공위성, 드론, 조사차량 등 다양한 지구관측 플랫폼 기반의 재난 피해 분석·모니터링과 재난 활용 기술을 개발하고 있다. 본 특별호에서는 연구원에서 수행하고 있는 재난현장 조사와 위성기반 재난관리 기술, GIS를 활용한 재난정보 분석과 관련된 최근 연구성과를 자세히 기술하였다. 이러한 지구관측 기술개발 연구성과를 토대로 기존 공간정보 서비스 기술과 재난현장에서 수집되는 각종 정보들을 서로 연계하여 통합적인 국가 재난 조사·분석·모니터링 기술 고도화를 위해 지속적으로 노력을 해나갈 것이다.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
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• 한국우주과학회 2008년도 한국우주과학회보 제17권2호
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• pp.31.1-31.1
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• 2008

While some observations in the geomagnetic tail region supported electrons could be accelerated by reconnection processes, we still need more observation data to confirm electron acceleration in this region. Because most acceleration processes accompany strong pitch angle diffusion, if the electrons were accelerated in this region, strong energetic electron precipitation should be observed near earth on aurora oval. Even though there are several low altitude satellites observing electron precipitation, intense and small scale precipitation events have not been identified successfully. In this presentation, we will show an observation of strong energetic electron precipitation that might be analyzed by relativistic electron acceleration in the confined region. This event was observed by low altitude Korean STSAT-1, where intense several hundred keV electron precipitation was seen simultaneously with 10 keV electrons during storm time. In addition, we observed large magnetic field fluctuations and an ionospheric plasma depletion with FUV aurora emissions. Our observation implies relativistic electrons can be generated in the small area where Fermi acceleration might work.

• 한국지구과학회지
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• 제26권1호
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• pp.41-57
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• 2005

본 연구의 목적은 학생들로 하여금 실제 야외지질조사를 효과적으로 수행하기 위한 교육 자료를 개발하는 것이다. 이를 위하여 시대를 달리하는 다양한 암석과 지질구조를 가지고 있고 지리적으로 접근하기 편리한 음성분지의 남동부 두타산 일대를 대상으로 선정하였다. 음성분지의 야외지질 실습코스에는 13개의 관찰지점이 있으며 실제 현장에서 각 관찰 지점별로 학생들이 활동할 수 있도록 야외학습자료를 제시하였다. 이를 위해 일반 지형도나 수치 지형도를 이용하여 스스로 노선지질도를 작성하도록 하였으며 큰 구조나 서로 다른 암상과의 관계를 광역적으로 알 수 있도록 항공사진을 첨가하였다. 또한 각 관찰 지점마다 노두 및 편광 현미경 사진을 제시하여 야외학습에서 경험할 수 있는 환경으로 설계하여 실제로 야외에서 겪게 되는 갈등 요인을 최소화 할 수 있도록 하였다. 이렇게 구현된 야외지질조사자료는 충북대학교 사범대학 지구과학 수강자를 대상으로 학생들의 태도를 조사하였으며, 그 결과 정의적 측면에서 학생들이 야외학습을 수행하는데 도움이 된다는 긍정적인 변화를 보였으며, 특히 지구과학에 관한 구체적인 개념 형성에 많은 도움이 되는 것으로 분석되었다.

• 아동학회지
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• 제32권1호
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• pp.103-123
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• 2011

The purpose of this study was to investigate infants' individual attempts at interaction with their teachers in the two-year-old class curriculum of a child care center. To achieve this aim, this study analyzed both the types of interactions that infants attempted with their teachers, as well as the underlying message contained in infants' attempts at of interacting. This study used the complete participation observation methodology following an ethnographic approach, a research method which can help us see the whole picture by tracing the main causes and connections. The participants in this study were 13 infants and their teachers in 2 two-year-old classes (Hope and Love) of the Vision Child Care Center located in G city. The researcher, who was also a Hope-class teacher, ad as an observer, and the Love-class teacher acted as an assistant observer. Participant observation was made everyday except the days when field trips and group activities wewe planned, from october 2009 to January 2010. A variety of methods were used to collect materials, such as participant observation, in-depth interviews and collection of documents.

• 한국위성정보통신학회논문지
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• 제8권3호
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• pp.32-40
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• 2013

Boltwood 구름센서는 구름으로부터 복사되는 적외선을 감지하여 구름의 유무와 많고 적음을 판별할 수 있는 기상센서의 한 종류이다. 이 구름센서는 한국천문연구원이 진행하고 있는 국가현안과제의 일환인 우주물체 전자광학 감시체계 시스템(OWL, Optical Wide-field patroL)에 사용될 계획이다. 실제 시스템 적용에 앞서, Boltwood 구름센서를 충북대학교 천문대에 설치, 약 2주간 구름센서의 구름감지 성능 시험을 위한 관측을 진행하였다. 구름센서의 성능과 비교할 대상으로 충북대학교 천문대에 현재 설치, 운영 중인 구름량 측정을 위한 CCD 관측시스템을 이용하였다. 성능 테스트 결과, 하늘과 지상의 온도차이와 측광 자료의 별 개수간 명확한 상관관계가 도출되지 못했다. 그 원인으로는 시험 환경상의 문제와 Boltwood 구름센서의 내부 알고리즘 및 하드웨어에 대한 정보공개가 제한 때문인 것으로 판단된다. 이 논문에서는 Boltwood 구름센서와 CCD 관측시스템의 구름지수를 비교, 분석한 과정과 그 상세 결과를 제시하고자 한다.

• 천문학논총
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• 제12권1호
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• pp.35-45
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• 1997

SOFT($\underline{So}lar\;\underline{F}lare\;\underline{T}elescope$) installed at BOAO(Bohyunsan Optical Astronomy Observatory) is purposed for observing solar active regions using four refractors on single mount with a $400"\times300"$ field of view: Two refractors with a diameter of 15cm(f15) are observe the white light and $H\alpha$, and the other two refractors with a diameter of 20cm(f8) are observe the magnetic field distribution and Doppler shifts at the solar chromosphere. Three Lyot filters, one of the most important observational instruments, are installed on the optical rails for VMG, LMG, and $H\alpha$ that possible to very narrow pass band observation under high precision stability of temperature. From the combination of KD*P and quarter wave plate in the Lyot filter possible observe the magnetic fields strength and doppler shifts by using the characteristics of polarization components. In this paper, we introduce the basic characteristics, optical system, and monitor system of the SOFT.