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        검색결과 29

        2.
        2023.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        Fish school monitoring technology is utilized for various purposes, such as boat fishing and resource surveys. With advancements in information and communication technology, this technology has expanded its application to remote areas. Its significance has grown in fishing sites, particularly for improving the efficiency and cost-effectiveness of set-net fishing. Set-net fishing gears are not limited to coastal areas, but are also installed in inland and remote sea regions. Consequently, fishermen require technology that allows them to quickly transmit information about approaching fish schools and enables them to perform long-term monitoring. The development of remote monitoring technology for set-net fish schools must consider crucial design factors such as communication range, transmission speed, power consumption of information modules, and operational expenses. In this study, we developed a low-power remote monitoring module for set-net fish school based on WCDMA. The module was specifically designed to minimize power consumption, allowing for communication over long distances and extended operation times in set-net fishing applications. Furthermore, we developed a web server software application that enables remote access to fish schools and provides real-time weather information. The performance of the developed module was evaluated through set-net fishing site application and experiments with moving ships on the sea. The experimental results demonstrated that the remote monitoring system, consisting of the developed low-power remote monitoring module for set-net fish school based on WCDMA and a fish finder, had an average power consumption of 4.6 W, a maximum communication range of 22.84 km, and a data transmission and reception rate of 98.79%. The maximum fish school information transmission and reception rate was 97.26%.
        4,000원
        4.
        2022.05 구독 인증기관·개인회원 무료
        Recently, an international issue due to the discharge of contaminated water from the Fukushima has been highlighted. Since the Fukushima nuclear power plant accident in japan, marine environmental radioactivity survey has been strengthened with increased sampling frequency and range for seawater in territorial waters. And a stationary underwater radiation monitoring system including floating equipment-based system such as oceanographic buoys, tidal stations have been deployed on-site to detect abnormal radiological events. However, stationary monitoring systems may be insufficient for the early detection of abnormal radioactivity over a wide area, since it is a passive way of waiting for radioactive materials to spread in the ocean. So, our team developed a ship-mounted seawater gammaray monitoring system that can be operated remotely and in real time. In this study, it includes a detailed description of the design, installation, monitoring method, and operation of the system.
        5.
        2022.03 구독 인증기관 무료, 개인회원 유료
        The aging society are causing complicated problems from chronic diseases such as diabetes, heart disease in aged patients. Recently Covid pandemic swept across global aging societies and put aged people with chronic disease more vulnerable to mobidity. Therefore, from view of preventive and precision medicine, remote monitoring an aged people with chronic disease is an important issue than ever. Smart health care systems as remote monitoring is so called telemetry system which enable doctors or health care providers to manage remotely to consult, diagnose and treat patients with chronic disease and infectious disease as well. The goal of telemetry system is to meet timely medical need in aged patients in distant place through communication technologies. Through technological breakthrough, particularly in real-time health care industry, Telemetry system with realtime mornitoring of heart rhythm and blood glucose level can play an important role in managing healthcare services in aged patients. This report introduces a comprehensive and inclusive review on the usefulness of realtime patiens monitoring with wearable sensors in telemedicine applications. The findings of this report are as follows: (1) The advantage of real-time monitoring and blood glucose level and biofeedback based on visual data (2) The advantage of realtime-monitoring heart rhythm coupled with blood glucose level. (3) There is an additional need to produce a digital imaging from protable diagnostic divices such as X-ray and ultrasound.
        3,000원
        10.
        2017.10 구독 인증기관·개인회원 무료
        This study was carried out to develop the technology to manage the growth management of mushroom which was cultivated by long-term knowledge based on the quantified data. In this study, it was developed hardware to monitor and control the growth environment of mushroom cultivation house and an algorithm to automatically grow mushroom. Environmental management for the growth of mushrooms was made possible by cultivation sites, computers and smart phones. In order to manage the environment of mushroom cultivation house, environmental management data of farmers cultivating the highest quality mushrooms in Korea was collected, and a growth management database was created based on the collected data. The management environment for the mushroom cultivation was controlled at ±0.5 °C for temperature, 7 % for upper limit and 3 % for lower limit for relative humidity, and ±10% level for carbon dioxide concentration based on database value. As a result of cultivating mushrooms in such an environment, it was possible to produce mushrooms at almost the same level as those cultivated in farms with the best technology. Therefore, it was considered that the environmental management of the mushroom house managed by the technology based on the long experience could be managed based on the sensor data.
        11.
        2017.09 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This study was carried out to develop the technology to manage the growth of mushrooms, which were cultivated based on long-term information obtained from quantified data. In this study, hardware that monitored and controlled the growth environment of the mushroom cultivation house was developed. An algorithm was also developed to grow mushrooms automatically. Environmental management for the growth of mushrooms was carried out using cultivation sites, computers, and smart phones. To manage the environment of the mushroom cultivation house, the environmental management data from farmers cultivating the highest quality mushrooms in Korea were collected and a growth management database was created. On the basis of the database value, the management environment for the test cultivar (hukthali) was controlled at 0.5 °C with 3–7% relative humidity and 10% carbon dioxide concentration. As a result, it was possible to produce mushrooms that were almost similar to those cultivated in farms with the best available technology.
        4,000원
        12.
        2017.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        It is necessary to monitor growth status of the crops due to continuous change of climate causing insecurity in crop cultivation. Low altitude remote sensing(LARS) system is utilized to accurately monitor the growth status of the crops. In this study, models for monitoring fresh weight(FW), one of the major growth factors of Chinese cabbage, were developed with structural indices and simple ratio calculated from bands in remotely sensed canopies by NIR, RE(imaging sensor A) and multispec-4c sensors(imaging sensor B) equipped with fixed-wing UAV depending on vegetation stages of normal planting(NP) and delayed planting(DP) Chinese cabbages. In results of imaging sensor A, the estimation models using structural indices and simple ratio were divided into NP and DP due to different attribute of reflectance in canopies with changed environment condition depending on different planting dates. The estimation models using simple ratio calculated by red edge and visible bands of NP showed better performance than other models, but RMSE was high. The models using simple ratio calculated by same bands of DP were feasible to accurately estimate FW(R2 of more than 0.946 with RMSE of less than 169.5 g). In results of imaging sensor B, the estimation models using structural indices and simple ratio on DP were divided into low to intermediate FW and intermediate to high FW. As a result, estimation models of all structural indices and simple ratio in low to intermediate FW bands were advisable to estimate FW(R2 of more than 0.860 with RMSE of less than 104.7 g). Estimation models of those calculated by red edge and visible bands in intermediate to high FW were only possible to accurately estimate FW(R2 of more than 0.532 with RMSE of less than 400.7 g).
        4,300원
        13.
        2016.12 구독 인증기관 무료, 개인회원 유료
        The study concentrates on the status of ecological environment development in Shenyang, uses the remote sensing images and social statistics in different periods as the data base, establishes a dynamic monitoring system and model of urbanization and ecological security. Through the identification and quantitative analysis of ecological security dynamic monitoring information, with the support of spatial information technology, we have formed a key technology system which combines ecological security warning with ecological security structure optimization. Moreover, the spatial database of ecological key elements in Shenyang city was constructed. The vertical pattern, horizontal pattern and ecological function of urban ecological system is organically combined, which provides the basic data for the layout and regulation of green space and water system. With these efforts, a key technology system is formed, including the warning of urban ecological security- the space regulation of economic development- the optimization of urban ecological security pattern - the regulation of urban elements' spatial layout. The research results provide scientific and accurate data base for ecological planning and regulation in Shenyang City , carry out effective ecological security monitoring and management for the development of Shenyang, protect the ecological integrity of the system as well as the healthy development of the economy in Shenyang City during the urbanization process .
        4,000원
        15.
        2013.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        비래해충인 멸강나방 성충의 발생을 실시간으로 예찰하기 위하여, 성페로몬 트랩에 원격감지장치를 설치한 트랩의 운용 효율성을 검정하였다. 원격감지트랩은 콘트랩 기반에 곤충의 유입을 광차단으로 감지하는 센서부, 신호전송부, 태양열기반의 전력공급부, 트랩 지지대, 웹페이지 기반의 자료수집부로 구성되었다. 연구과정에서 멸강나방 수컷 성충의 밤 시간대 포획의 일일주기성을 이용한 신호감지 시간대 축소, 신호발생 프로그램 조절, 1시간 간격의 전송간격, 신호전송 프로그램 변형 등을 통해 포획 나방수와 감지신호 발생 수의 격차를 줄여 최종적으로 신호 정확도를 92% 이상으로 개선하였다. 또한 실제 멸강나방 성충의 발생양상과 원격감지트랩에서의 신호 발생양상의 상관계수가 0.98이상으로 원격감지트랩에서의 신호 발생이 멸강나방 발생 양상을 정확하게 반영하는 것으로 나타났다. 2011~2012년 멸강나방은 연중 여러 번 발생되는 것이 관찰되었는데, 모두 짧은 기간 동안 발생되어 가파른 피크가 특징이었다.
        4,000원
        16.
        2012.12 KCI 등재 구독 인증기관 무료, 개인회원 유료
        PURPOSES : Efficiency Improvement of a public road construction project management work using the development of a real-time remote site monitoring system METHODS : In this study, we developed the remote site monitoring system using a web camera for road construction projects in the RCMA(Regional Construction Management Administration). We can be monitored a construction progress and a weak point of the situation in real time using this. To achieve this, we tested about 10 road construction projects ordered by RCMA. Then, we verified a applicability for the site monitoring system in future. RESULTS : Take advantage of the remote site monitoring system consists of the Construction CALS System, one of the business systems used in the part of the MLTM(Ministry of Land, Transport and Maritime Affairs) institution-agencies. Was configured to be served through the "Construction CALS System" of "Construction Management System(Contractors)" and the "Construction CALS Portal System". Through this, Benefit analysis through a pilot application of the 10 road construction sites and developing considerations and "Guide for visual information processing equipment installation-operating in construction sites"are presented. CONCLUSIONS : Through the establishment of remote site monitoring system can improve the efficiency of construction management services. In addition, Various disasters and calamities, accidents and illegal construction will be prevented in advance is expected. This is expected to further improve the quality of the facilities.
        4,000원
        17.
        2012.08 KCI 등재 구독 인증기관 무료, 개인회원 유료
        This paper describes the remote monitoring of breaking ocean waves generated by Typhoon Nabi, whose name means butterfly in Korean, using a marine X-band radar in the Yongho Man, Busan, Korea. The basic purpose of this study is to investigate the dynamic behavior and to estimate the periods of breaking waves across the surf zone from radar image sequences. In these experiments, the land-based radar system imaged the inshore zone of three miles from the coastline to a isobath of 30 meters. The wave period and the dominant wave direction for breaking ocean waves extracted directly from radar image sequences were 157.4 meters and 298 degrees, respectively. However, the result calculated quantitatively by the continuous wavelet transform (CWT) showed that the period of breaking waves was 154.3 meters. The average difference in breaking wave periods between the value extracted by using EBRL (electronic bearing and range line) of radar and the calculated value by CWT was 3.1 meters, showing that the CWT method is also accurate. These results suggest that a marine X-band radar system is a viable method of monitoring the breaking ocean waves.
        4,000원
        18.
        2012.06 구독 인증기관 무료, 개인회원 유료
        오늘날, 스마트폰의 보급으로 무선 헬스케어시스템에 대한 연구가 점차 활성화됨에 따라, 손쉽고 간편한 건강관리 시스템에 대한 수요도 증가하고 있다. 그 중에서도 사회문제로 크게 대두되는 독거노인의 고독사 방지를 위한 시스템 개발은 지속적으로 연구되고 있다. 본 논문에서는, 인체에 비침습적이며 무구속으로 생체 신호 계측이 가능한 광용적맥파법(photoplethysmography)으로 독거노인의 맥파를 계측하고 스마트 폰으로 전송하여, 원격진단이 가능한 감시시스템 개발을 목적으로 하였다. 광용적맥파법은 적색광이나 적외선광을 피부에 침투시켜 맥파를 검출하는 방법의 하나로 근래에는 손가락과 같은 인체 말단뿐만이 아니라 손목에서 맥파를 계측하는 연구가 진행되고 있다. 그러나 손목에서 맥파를 계측 시, 광량을 고정시킨 상태에서는 모세혈관의 회전이나 피부의 두께 등에 따라 정확한 맥파 검출을 하기에는 어려움이 있다. 따라서 본 연구에서는 잡음제거에 탁월하며 높은 이득을 가지는 차동 증폭기를 단일전원에서도 동작 가능하도록 개선하고, 인체의 피부 두께에 따른 오차를 줄이기 위해 광량의 침투 범위를 조절하여 다양한 피부 층에서 최적의 센싱을 할 수 있는 알고리즘을 설계하고 그 타당성을 확인하였다.
        4,000원
        19.
        2009.06 KCI 등재 구독 인증기관 무료, 개인회원 유료
        At this study, we are developing a possible control system through remote monitoring for fire protection in various chemical factory facilities. It's possible to do real time confirmation of a normal operation presence of the various equipment installed in a chemical factory through the internet network at a fire fighting head office, an area fire department and a chemical factory situation room using this remote monitoring control system. When occurring, abnormal operation is the remote monitoring control system, which can check this immediately and notify the situation room administrator. After it was tested using developed remote monitoring control system, the remote monitoring for which the internet network was used confirmed possible.
        4,000원
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