• 제목/요약/키워드: moon observation

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Role of the Observation Planning in Three-dimensional Environment for Autonomous Reconstruction

  • Moon, Jung-Hyun;You, Bum-Jae;Kim, Hag-Bae;Oh, Sang-Rok
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2005년도 ICCAS
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    • pp.37-42
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    • 2005

  • This paper presents an autonomous system for reconstruction of three-dimensional indoor environments using a mobile robot. The system is composed of a mobile robot, a three-dimensional scanning system, and a notebook computer for registration, observation planning and real-time three-dimensional data transferring. Three-dimensional scanning system obtains three-dimensional environmental data and performs filtering of dynamic objects. Then, it registers multiple three-dimensional scans into one coordinate system and performs observation planning which finds the next scanning position by using the layered hexahedral-map and topological-map. Then, the mobile robot moves to the next scanning position, and repeats all procedures until there is no scanning tree in topological-map. In concurrence with data scanning, three-dimensional data can be transferred through wireless-LAN in real-time. This system is experimented successfully by using a mobile robot named KARA.

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일 대학 간호대학생의 병실에서의 상호작용 (A Research on the Interactions in Practice of the Nurses’ College Students in the Nursing College)

  • 김진향;문선영;이정은;임미림
    • 한국간호교육학회지
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    • 제7권2호
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    • pp.207-216
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    • 2001

  • To understand the types of interactions between the nurses' college students and patients, this research used Spradley's Cultural Description Method to carry out his eleven- stage research conduct process : participatory observation, cultural description recording, descriptive observation, category analysis, focus observation, classification analysis, selective observation, components analysis, cultural themes, cultural discovery, and cultural description writing. The research participants were 7 nurses' college students practising at the hospital affiliated to E university, and data were collected from May 2000 through primary and secondary in-depth interviews and observations. The cultural characteristics of the subjects extracted from these results were as follows : 1. The students learned through contacts with patients. 2. The students experienced "Sharing" through interactions with patients. 3. The students showed evasive behaviors in difficult situations. 4. The students paltered when faced with difficult situations. 5. The students did not surrender to the refusals of patients. 6. The students identified their studentship. 7. The students regarded human interaction as 'contact'.

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빅데이터를 활용한 양파 관측의 사회적 후생효과 분석 (Analysis of Social Welfare Effects of Onion Observation Using Big Data)

  • 주재창;문지혜
    • 한국유기농업학회지
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    • 제29권3호
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    • pp.317-332
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    • 2021

  • This study estimated the predictive onion yield through Stepwise regression of big data and weather variables by onion growing season. The economic feasibility of onion observations using big data was analyzed using estimated predictive data. The social welfare effect was estimated through the model of Harberger's triangle using onion yield prediction with big data and it without big data. Predicted yield using big data showed a deviation of -9.0% to 4.2%. As a result of estimating the social welfare effect, the average annual value was 23.3 billion won. The average annual value of social welfare effects if big data was not used was measured at 22.4 billion won. Therefore, it was estimated that the difference between the social welfare effect when the prediction using big data was used and when it was not was about 950 million won. When these results are applied to items other than onion items, the effect will be greater. It is judged that it can be used as basic data to prove the justification of the agricultural observation project. However, since the simple Harberger's triangle theory has the limitation of oversimplifying reality, it is necessary to evaluate the economic value through various methods such as measuring the effect of agricultural observation under a more realistic rational expectation hypothesis in future studies.

  • https://doi.org/10.11625/KJOA.2021.29.3.317 인용 PDF KSCI

군산·영광 해상 6개 지점 동시 관측을 통한 풍력자원 평가 및 바람지도 검증 (Wind resource evaluation and verification of wind map with simultaneous observation at six offshore locations in Gunsan and Yeonggwang)

  • 정문선;전인성;김지영
    • 풍력에너지저널
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    • 제14권3호
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    • pp.5-13
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    • 2023

  • Floating LiDAR systems (FLSs) are used in many countries because they are easier to install than stationary weather towers, have low maintenance costs, and can be installed in deep sea areas. However, FLSs are rarely used in Korea due to a lack of clear evaluation criteria to verify the reliability and uncertainty of their measurements. This study is the first to verify the reliability of FLSs in Korea with one-year simultaneous observation of six lidar systems - two fixed and four floating systems - in sea areas of Gunsan and Yeonggwang. The reliability of FLSs measurement data was verified by comparison between fixed and floating systems. Moreover, differences between existing wind resource maps and the data observed from the six points were analyzed and wind resource maps were calibrated. The results show a return rate of more than 95 % of the observed data and strong correlations between fixed and floating systems (average R2 of 0.977). Additionally, errors in wind speed predictions to produce a wind resource map could be significantly reduced from 5.7 % to 0.6 % after calibrations with the observation data.

  • https://doi.org/10.33519/kwea.2023.14.3.001 인용 PDF HTML