• 대한교통학회:학술대회논문집
• /
• 대한교통학회 2007년도 제55회 학술발표회논문집
• /
• pp.449-456
• /
• 2007

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2007년도 Proceedings of ISRS 2007
• /
• pp.333-336
• /
• 2007

SELENE, a Japanese lunar mission, has been launched this year. There are large volumes of images that were already archived and will be archived by missions such as SELENE. Automatic image analysis systems, which extract useful information from large amounts of data, are now required. The authors propose Lunar Surface GIS, which archives lunar surface information collected by lunar orbiting spacecraft and conducts geological analysis automatically. This system includes automatic crater detection, automatic age determination, and lava thickness estimation methods. In this paper, methods for automatically determining the age and estimating the lava thickness of lunar mare are described. The lunar surface age was determined by analyzing data of detected crater size and number using a crater chronology method. Lava thickness was estimated by the extent of the overlying material around the crater as well as the composition of underlying terrain units. In this result, the age map at Mare Crisium suggests the mare had been formed 3.0-3.7 b.y. ago. The lava thickness result suggests the thickest part of the mare is distributed around the center of the mare. The Lunar Surface GIS can produce a geological map, age map, and mare lava thickness map, for example.

• 대한교통학회지
• /
• 제33권4호
• /
• pp.417-429
• /
• 2015

본 연구에서는 고속도로에서 수집되는 차량검지기 자료를 대상으로 자료의 품질에 영향을 미치는 요인을 분석하여, 신뢰성 있는 교통자료의 관리 및 활용을 위한 교통자료 품질 통합평가지표를 개발하였다. 이를 위하여 국내외 자료품질평가에 대한 현황 조사 및 분석을 수행하여 시사점을 도출하였다. 품질관리지표는 기존의 고속도로 검지자료 품질평가에 사용되고 있는 평가지표인 완전성과 유효성뿐만 아니라, 이를 수정 보완한 지표들을 제시하였으며, 교통자료의 특성을 반영한 시공간 일관성 지표와 결측심각성 지표를 신규지표로 제시하였다. 또한, 개별 품질 평가지표들을 통합적으로 관리할 수 있는 통합 평가지표를 개발하고 평가 프레임워크를 제시하였다. 통합 품질평가지표는 쌍대비교를 통한 설문조사 방법으로 가중치를 산출하는 AHP기법과 자료의 변동성을 고려하여 가중치를 산출하는 엔트로피방법을 통합하는 혼합가중치 산출 방안을 적용하여 도출하였다. 본 연구의 결과물은 교통자료의 효율적 관리를 가능하게 하고, 교통자료의 품질을 높일 수 있는 품질관리체계의 중요 구성요소로 활용될 것으로 기대된다.

• Wind and Structures
• /
• 제19권3호
• /
• pp.271-294
• /
• 2014

The impact of artefacts in archived wind observations on the design wind speed obtained by extreme value analysis is demonstrated using case studies. A signpost protocol for detecting candidate artefacts is described and its performance assessed by comparing results against previously validated data. The protocol targets artefacts by exploiting the serial correlation between observations. Additional "sieve" algorithms are proposed to identify types of correctable artefact from their "signature" in the data. In extreme value analysis, artefacts displace valid observations only when they are larger, hence always increase the design wind speed. Care must be taken not identify large valid values as artefacts, since their removal will tend to underestimate the design wind speed.

• Ocean and Polar Research
• /
• 제36권4호
• /
• pp.515-524
• /
• 2014

The Korea Institute of Ocean Science and Technology has acquired detailed biological, chemicophysical, and geological data in the northeastern Pacific through a manganese nodule program since 1983. Plenty of manganese nodules were collected to estimate the amount of resources by free-fall grab and box corer. The collected manganese nodules have been archived systematically in the rock and mineral storage section of the Library of Marine Samples (LIMS) since 2012. The LIMS provides essencial information on the stored samples including sample name, nodule type, sampling location, depth, and equipment. Although a high quality database of the information system is under construction, the samples have tagged information for manganese nodules like chemical composition, morphology, weight, size, abundance, and photograph. In this study, we attempted to provide information on the well-organized and easily accessible archived manganese nodule samples for future studies and to introduce the usefulness of the LIMS.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
• /
• 한국우주과학회 2004년도 한국우주과학회보 제13권1호
• /
• pp.36-36
• /
• 2004

Ionospheric data from DGS-256 ionosonde operated by Radio Research Laboratory in Anyang archived during 1991-2002 was extracted and analyzed firstly in Korea. Daily, monthly and annual variations of the 12-year F2 layer critical frequency(foF2) are derived to investigate the statistical ionospheric characteristics during one complete solar cycle. Positive correlation between the mean values of 24-hourly monthly median foF2 and the monthly smoothed sunspot number(SSN) for the same period is found. (omitted)

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 1998년도 Proceedings of International Symposium on Remote Sensing
• /
• pp.134-137
• /
• 1998

NOAA satellite data and GMS data have been received at the Institute of Industrial Science, University of Tokyo since early 80's and 1994, respectively. So far, all data are archived and users can look their quick look images through the Internet and get the data by request. The following processed data set will be available soon with the corporation with the Science University of Tokyo: Radiometrically corrected by 65 code and geometrically corrected NOAA data with the corporation with Iwate University and NDVI, SST and cloud classified images as their products. 1 km AVHRR Land Project Data Set of Asia and their 14 regional subsets. Geometrically corrected GMS images and surface temperature maps, sea surface temperature maps and cloud classification maps.

• 대한원격탐사학회:학술대회논문집
• /
• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
• /
• pp.612-615
• /
• 2005

Korea Aerospace Research Institute(KARl) has been receiving Terra and Aqua MODIS data at ground station of Daejeon since July 2002. MODIS data can cover whole East Asia including the Korean Peninsula, Japan and The East China each almost scene and is monitoring ocean, atmosphere and land. By this time, over two thousand scenes have been archived including Terra and Aqua in the storage system and they occupied about over 10TB of disk space. In this study, Web-Downloading system of MODIS data developed on WWW is including following main functions: spectral subset (250m, 500m, 1000m chnnels) Level 1B data of HDF format, result display, ftp download and statistic viewer etc. Users using this system can directly download MODIS data on WWW with a few input parameters. This system is available via the Internet URL after October 2005 on the following, 'http://webmodis.kari.re.kr/'

• 국제학술발표논문집
• /
• The 1th International Conference on Construction Engineering and Project Management
• /
• pp.725-730
• /
• 2005

The problem of managing digital design data including drawings, specifications and other technical data in building design and construction units is a real challenge, especially when there is a need to structure the design information across building design companies. The main difficulty in this information management is the shortage of unified rules (or standards) on how the digital design data should be gathered, archived, and preserved in the most efficient way for building design and construction units. The most important issue, which addressed in this work, is the standardized reference of all design data definitions.

• 한국ITS학회 논문지
• /
• 제6권1호
• /
• pp.13-26
• /
• 2007

최근 국내 외에서는 고속도로 및 여러 도시에 ITS를 도입하여 차량검지기 자료를 수집, 활용하고 있다. 국내에서는 이들 자료를 주로 반복/비반복 정체관리, 돌발상황관리, 경로안내 서비스 등 실시간 정보에 국한되어 이용되고 있으나, 국외에서는 이들 분야 외에 교통정책 평가, 교통사업 평가, 교통안전 증진 등의 다양한 목적에도 활용하고 있다. 본 연구는 차량검지기 자료와 관련된 국내외 연구를 조사, 분석하고 이를 통해 시사점을 도출하여 향후 국내 차량검지기 자료 관련 연구의 발전방향을 제시하였다. 연구범위는 고속도로 등의 연속류 구간과 고속국도 우회도로의 단속류 구간에 설치된 루프검지기와 영상검지기 같은 차량검지기 자료를 대상으로 한다. 다만 자료가공 부문의 자료융합에 대한 연구는 루프검지기의 지점검지자료와 GPS Probe, AW(Automatic Vehicle Identification)의 구간검지자료를 융합하는 것이 대부분이므로 이 연구에 한하여 구간검지자료를 대상으로 한 것도 포함한다. 이를 위해 본 연구는 차량검지기 자료와 관련된 최근 국내외 학술대회 발표논문, 학술지 논문, 연구보고서를 1) 자료수집, 2) 자료가공, 3) 자료저장, 4) 자료품질 부문으로 구분하고 각 연구에 대한 연구대상 차량검지기, 연구목적, 연구방법론등을 분석하였다. 또한 각 부문별 국내외 연구동향 비교와 시사점을 제시함으로써 향후 국내 차량검지기 자료 관련 연구의 발전방향을 제시하였다.