• 국제학술발표논문집
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• The 3th International Conference on Construction Engineering and Project Management
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• pp.1324-1327
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• 2009

Social infrastructure is the basis of public welfare and should be recognized and managed as important assets. Bridge is one of the most important infrastructures to be managed systematically because the impact of the failure is critical. It is essential to monitor the performance of bridges in order to manage them as an asset. But current analytical methods such as predictive modeling and structural analysis are very complicated and difficult to use in practice. To apply these methods, structural and material condition data collection should be performed in each element of bridge. But it is difficult to collect these detailed data in large numbers and various kinds of bridges. Therefore, it is necessary to collect data of major measurement items and predict the life of bridges roughly with advanced information technologies. When certain measurement items reach predefined limits in the monitoring bridges, precise performance measurement will be done by detailed site measurement. This paper describes the selection of major measurement items that can represent the tendency of bridge life and introduces automated bridge data collection test-bed using wireless sensor network technology. The following will be major parts of this paper: 1) Examining the features of conventional bridge management system and data collection method 2) Mileage concept as a bridge life indicator and measuring method of the indicator 3) Test-bed of automated and real-time based bridge life indicator monitoring system using wireless sensor network

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.706-708
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• 2003

Index for difference of vegetation surface roughness (BSI: Bi-directional reflectance factor structure Index) was proposed in our laboratory (Konda et al., 2000). It is thought that BSI is useful vegetation index for vegetation monitoring. If it can be applied for global covered satellite data, detailed monitoring of global vegetation can be expected. However, in order to apply BSI to global satellite data, there are some problems to be solved. In this study, in order to make global data set of BSI, it arranged about processing of the global satellite data for making BSI data sets.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.786-789
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• 2003

The detection of sandstorms and industrial pollutants has been the emphasis of this study. Data obtained from meteorological satellites, NOAA and GMS, have been used for detailed analysis. MODIS and Landsat images are also used for the application of future KOMPSAT- 2. Verification of satellite observations has been made with air pollution data obtained by ground-level monitors. It was found that satellite measurements agree well with concentrations and variations of air pollutants measured on the ground, and that satellite technique is a very useful device for monitoring large-scale air pollution in East Asia. The quantitative analysis of satellite image data on air pollution is the goal in the future studies.

• Journal of Ecology and Environment
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• 제41권3호
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• pp.72-77
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• 2017

The world of technology is pleasantly evolving to a stage where small robotic aid may be used to ease the work of researchers, and to one day bring more accurate results than the current human abilities allow. In the research field of species monitoring in biology, unmanned aerial vehicles (UAVs) have begun to play an important role in how research is approached, analyzed, and then applied for further investigation, particularly by focusing on a single species. This paper uses data that has been collected from June to October 2015, to demonstrate how the innovative idea of using UAVs to monitor a particular species will bring a positive development in conservation research, and what it was able to achieve in this research field so far. More precisely, we examine the potential of UAVs to take center stage in future research, as well as their current accuracy. This paper describes the use of the commercially available Phantom 2 Vision+ for the detection, assessment, and monitoring of the butterfly species Libythea celtis, demonstrating how it can help the monitoring of butterflies and how it could be developed for even more adventurous and detailed research in the future.

• Smart Structures and Systems
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• 제4권3호
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• pp.305-318
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• 2008

The development of a digital signal processor based prototype is described in relation to continuing efforts for realizing a fully self-contained active sensor system utilizing impedance-based structural health monitoring. The impedance method utilizes a piezoelectric material bonded to the structure under observation to act as both an actuator and sensor. By monitoring the electrical impedance of the piezoelectric material, insights into the health of the structured can be inferred. The active sensing system detailed in this paper interrogates a structure utilizing a self-sensing actuator and a low cost impedance method. Here, all the data processing, storage, and analysis is performed at the sensor location. A wireless transmitter is used to communicate the current status of the structure. With this new low cost, field deployable impedance analyzer, reliance on traditional expensive, bulky, and power consuming impedance analyzers is no longer necessary. A complete power analysis of the prototype is performed to determine the validity of power harvesting being utilized for self-containment of the hardware. Experimental validation of the prototype on a representative structure is also performed and compared to traditional methods of damage detection.

• Spatial Information Research
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• 제14권4호
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• pp.421-431
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• 2006

시설물의 노후화에 따라 시설물의 안전한 사용을 위한 모니터링의 중요성이 증가하고 있다. 기존의 인력에 의한 수동 계측에 의존한 방법을 대체할 모니터링 방법으로 유비쿼터스 관련 기술의 도입이 요청되고 있다. 본 연구에서는 유비쿼터스 기술을 이용한 교량관리 시스템의 실용화를 위해 필요한 교량의 모니터링 정보를 실시간으로 제공하는 웹기반의 교량관리 GIS 시스템을 구성하였다. 특히, 교량 모니터링 정보와 교량관리 시스템과의 효율적인 연동을 위해 국가공간프레임인 UFID와 현재 건설교통부에서 운용예정인 GIS 기반 교량관리시스템(BMS)과의 연계방안을 연구하였다. 또한 GIS를 활용하여 교량관리를 수행함에 있어서 필수적인 구조물의 세부위치와 속성을 표현하는 데이터 표현 방식에 대하여 함께 제안하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 추계학술대회
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• pp.654-656
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• 2015

최근 비만인구가 증가하는 추세에 따라 비만을 관리하는 모니터링 시스템 개발이 중요시되고 있다. 대부분의 모니터링 시스템은 단순히 BMI 수치를 계산하여 보여주는 기능만 있거나 간단한 체중정보만을 보여주기 때문에 사용자들이 자신의 BMI를 관리 하는데 정확도가 낮은 문제점이 있었고 제공되는 정보가 부족하기 때문에 운동을 효율적으로 하지 못하는 문제점이 있었다. 본 논문에서는 사용자의 BMI 수치의 변화를 그래프로 표현하고 BMI가 비슷한 타 사용자가 사용했던 운동기구를 추천해주는 웹 기반 모니터링 시스템을 연구한다.

• Journal of Korean Society for Atmospheric Environment
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• 제18권E1호
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• pp.21-28
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• 2002

Air quality issues in Korea rapidly changed at the beginning of the 1990s from primary to secondary pollutants starting in Seoul, the capital of Korea. The present frame of national air pollution monitoring networks was established between the end of the 1980s and the beginning of the 1990s. Background monitoring was initiated in the middle of the 1990s in response to increasing public concern about the long-range transport of air pollutants. Apart from the national monitoring, both routine and intensive measurements of fine particles have been made for research purposes since the middle of the 1990s at several background sites. However, air pollution monitoring in urban areas for other purposes was relatively scarce as national monitoring has been concentrated in these areas. Although ozone pollution has become a significant issue in major metropolitan areas every summer, only a little information on ozone precursors is available. During the past few years, the number of national monitoring stations has greatly increased. The government has a plan to gradually expand monitoring items as well as stations. It is anticipated that highly detailed information on both photochemical reactants and products will be available within the next several years. More emphasis will be placed on toxic substances based on risk assessment in monitoring for both research and policy making.

• 한국정보통신학회논문지
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• 제25권11호
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• pp.1463-1470
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• 2021

기존 모니터링 시스템들은 모니터링 대상에 따라 개별 시스템을 구현하였지만, 최근에서 Prometheus, Grafana와 같은 오픈소스를 활용하여 모니터링 시스템을 구현하고 있다. Prometheus와 Grafana를 활용하면 기존 모니터링 시스템 개발 방법에 비해서는 많은 부분이 편리해졌지만, 아직도 문제점이 남아 있다. 본 논문에서는 이러한 문제점을 해결하기 위해 Prometheus와 Grafana를 지원하는 통합형 모니터링 시스템을 제안한다. 제안하는 시스템은 모니터링 대상 데이터의 수집, 저장, 시각화, 관리를 수행하는 세부 모듈로 역할을 구분하고 기존의 문제점을 해결할 수 있도록 각 모듈을 구현하였다. 제안하는 시스템은 이기종 데이터베이스에 저장된 모니터링 대상을 편리하게 관리하여 모니터링 할 수 있으며 단순한 조작을 통하여 대시보드를 생성할 수 있다.

• 한국환경복원기술학회지
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• 제21권2호
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• pp.77-85
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• 2018

The intensive habitats loss of natural organisms as a consequence of anthropogenic activities has lead to the use of alternative habitats for species conservation. We reviewed the current status of alternative habitats and suggest the improvement of alternative habitats. Most of alternative habitats regarded in this study are not following the pre-arranged consultation at environmental impact assessment. These alternative habitats are rendered useless due to the insufficient consideration of ecological characteristics of species and lack of detailed plans. A number of alternative habitats are influenced by disturbance such as environmental pollution and construction. Post-monitoring of alternative habitats are needed to estimate immigration rate of species. Post management is also needed to assess the status of population stability. Overall, low effectiveness of alternative habitats is presented in this study. According to the status survey, methods for improvement of alternative habitats are required such as detailed guidelines, establishment of post-monitoring system, improvement of habitat restoration techniques, and guidelines for management and operation of alternative habitats.