• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2022년도 추계학술대회
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• pp.574-576
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• 2022

본 논문에서는 원격 모니터링이나 시뮬레이션 시스템에서 충격 효과를 그래픽으로 표시하는 기술을 개발하였다. 산업 현장의 장비나 시설을 실시간으로 점검하며 보수의 시기를 찾아내거나 사고의 예방을 위해 원격 모니터링이나 시뮬레이션 시스템이 활용되고 있다. 이러한 시스템들은 사용자들에게 시각정보를 제공하여 상황을 보다 이해하기 쉽도록 도움을 준다. 논문에서 제안하는 내부 충격의 그래픽 표시 기법은 3차원 그래픽을 활용하여 장비나 시설을 모델링하고, 장비에서 발생하는 충격과 손상의 위치를 볼륨 렌더링을 이용하여 내부에 표시하는 방법이다. 이는 장비 내부의 충격과 손상 위치에 볼륨 렌더링으로 충격파를 표시하여 보다 정확하게 문제점을 파악할 수 있다는 장점이 있다. 그리고 보다 강렬한 시각 효과를 통해 문제 상황을 보다 빨리 확인할 수 있을 것으로 기대한다.

• 에너지공학
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• 제15권1호
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• pp.67-73
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• 2006

본 논문에서는 복합화력 발전시스템을 대상으로 온라인 성능감시시스템을 적용함에 있어 제어가능 운전 파라미터의 실시간 영향산출 기법을 고안하였다. 이 기법은 가스터빈 인입필터 차압, 압축기 효율 등과 같은 운전 파라미터에 대해 기대치와 현재치의 편차로 인해 얼마만큼 성능에 영향을 미치는가를 정량적으로 산출하여 사용자가 즉각적으로 성능향상을 위한 운전조작이 가능하도록 조치할 수 있는 성능관리지표로서 활용된다.

• 환경영향평가
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• 제11권4호
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• pp.311-319
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• 2002

Procedures to establish well-balanced development and effectiveness of environmental impact assessment need include various stakeholder's participation in writing and reviewing document of environmental impact assessment, collecting public opinion, and post monitoring. Accordingly, to encourage effective and efficient collection of resident's opinion analyze present conditions and problems and suggest institutional and politic alternative proposals of it. This study resulted in following conclusions. In institutional aspects, (1) Proposal for drafting document of environmental impact assessment (2) Composition of committee for collecting and regulating stakeholder's opinion (3) Width of civil participation scale. In politic aspects, (1) Use of local community (2) Guide of local information from local society and environmental specialist (3) Understandable document and data of environmental impact assessment (4) Strength of roles and duties of local government.

• 환경영향평가
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• 제19권3호
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• pp.335-345
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• 2010

This paper assessed environmental impacts of marine sand mining on coastal areas and Exclusive Economic Zones (EEZs) of Korea, and diagnosed problems of the related assessment statements for suggesting key assessment items (scoping) and system improvement. To mitigate conflicts and environmental impacts caused by large-scale, concentrated sand mining, we suggest it is critical to promote sustainable and eco-friendly utilization of marine resources while listening opinions from various stakeholders and analyzing alternative plans. Especially, it should be mandatory as a scoping item to provide verifiable data on the amount of sand, potential and accumulative impacts by mining, and key assessment items (e.g. erosion and sedimentation by submarine topography, benthic change, spreading of suspended solids, water pollution, grain-size change, and impact on fisheries resources). We also suggest that postassessment and monitoring should be improved to enable tracking of environmental impacts caused by sand mining through seasonal monitoring together with intermittent short-term surveys. In addition, effective measures to mitigate the impacts is also essential. As repeated sand mining at large-scale can damage marine ecosystems by long-term accumulated impacts, we suggest that assessment systems and regulatory policies should be developed and established, especially for ensuring reliability of assessment and review on selected major sandmining projects.

• 대한안전경영과학회지
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• 제2권4호
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• pp.19-32
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• 2000

Assignable causes producing temporary deviation from the underlying system can influence on process adjustment and process monitoring in dynamic feedback control system. In this paper, the impact of assignable causes on EWMA forecasts and process adjustment which is based on the EWMA forecasts are derived for optimum control methods.

• 한국해양환경ㆍ에너지학회지
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• 제16권4호
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• pp.276-289
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• 2013

해상풍력발전 단지를 개발함에 있어 전력수급과 경제성 논리에만 초점이 맞춰짐으로써 여러 가지 환경적 문제들이 발생하고 있으며, 이에 따른 지역사회의 갈등이 유발되고 있는 실정이다. 특히 최근에 국내 해역의 풍황과 해황 조건 등을 중심으로 해상풍력에 대한 입지와 개발량에 대한 연구가 이루어져 왔으나, 해양환경 및 해양생태계에 미치는 영향에 대한 연구는 매우 부족하다. 유럽의 해상풍력발전 선진국에서는 개발 사업에 뒤따르는 환경 모니터링이 활발히 진행되고 있는 데 비해, 국내에서는 해상풍력을 설치하고 운영할 때에 발생할 수 있는 환경적 영향에 관한 모니터링 자료가 전무하다. 따라서 본 연구에서는 국외 해상풍력의 모니터링 사례 및 참고문헌의 사례를 분석함으로써 공사 시와 운영 시의 환경적 영향과 국내 해역에 적합한 환경영향평가 단계에서의 가이드라인을 제시하였다. 이에 따라 궁극적으로는 해상풍력개발에 따른 환경영향을 최소화하고 환경영향평가의 행정절차에 소요되는 협의기간을 단축시키는 데에 목적이 있다.

• 전기학회논문지P
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• 제61권4호
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• pp.174-179
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• 2012

The social and economic level of damages might be highly increased in the case of wide-area black-outages, because of heavy dependence of electricity. Therefore, the development of a wide-area protection relay intelligence techniques is required to prevent massive power outages and minimize the impact strength at failure. The frequency monitoring and prediction for wide-area protection relaying intelligence has been considered as an important technology. In this paper, a network-based frequency monitoring system developed for wide-area protection relay intelligence is presented. In addition, conventional techniques for frequency estimation are compared, and a method for advanced frequency estimation and measurement to improve the precision is proposed. Finally, an integrated monitoring system called K-FNET(Korea-Frequency Monitoring Network) is implemented based on the GPS and various energy monitoring cases are studied.

• Journal of Computing Science and Engineering
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• 제2권2호
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• pp.180-199
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• 2008

Technology has had a tremendous impact on our daily lives. Recently, technology and its impact on aging has become an expanding field of inquiry. A major reason for this interest is that the use of technology can help older people who experience deteriorating health to live independently. In this paper we give a brief review of the in-home monitoring technologies for the elderly. In the pilot study, we analyze the possibility of employing the data generated by a continuous, unobtrusive nursing home monitoring system for predicting elevated(abnormal)pulse pressure(PP) in elderly(PP=systolic blood pressure-diastolic blood pressure). Our sensor data capture external information(behavioral) about the resident that is subsequently reflected in the predicted PP. By continuously predicting the possibility of elevated pulse pressure we may alert the nursing staff when some predefined threshold is exceeded. This approach may provide additional blood pressure monitoring for the elderly persons susceptible to blood pressure variations during the time between two nursing visits. We conducted a retrospective pilot study on two residents of the TigerPlace aging in place facility with age over 70, that had blood pressure measured between 100 and 300 times during a period of two years. The pilot study suggested that abnormal pulse pressure can be reasonably well estimated (an area under ROC curve of about 0.75) using apartment bed and motion sensors.

• 환경영향평가
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• 제19권6호
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• pp.617-623
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• 2010

It is the most important subject to figure out characteristics of the wastewater inflows of sewerage treatment plant(STP) when situation models are applied to operation of the biological processes and in the automatic control based on ICA(Instrument, Control and Automation). For the purposes, real-time influent monitoring method has been applied by using on-line monitoring equipments for the process optimization in conventional STP. Since, the influent of STP is consist of complex components such as, COD, BOD, TN, $NH_4$-N, $NO_3$-N, TP and $PO_4$-P. MRA2(Microbial Respiration Analyzer 2), which is capable of real-time analyzing of wastewater characteristics is used to overcome the limitations and defects of conventional online monitoring equipments in this study. Rapidity, accuracy and stability of developed MRA2 are evaluated and compared with the results from on-line monitoring equipments for seven months after installation in Full-scale STP.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2007년도 춘계학술대회 논문집
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• pp.113-114
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• 2007