• 한국항행학회논문지
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• 제14권3호
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• pp.297-302
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• 2010

항로표지는 선박이 안전하게 운항할 수 있도록 도와주는 항행보조시설이다. 보통 항로표지는 시각표지, 음향표지, 특수신호표지 그리고 전파표지로 구분된다. 이 중 GNSS와 같은 위성항법의 발달과 AIS시스템의 개발로 항로상의 안전성 확보와 관련하여 전파표지에 대한 기대가 높아지고 있다. 반면 현재의 항로표지시스템은 이와 같은 변화에 대응하지 못 하고 종래의 시각적, 음향적인 보조 기능만을 담당하고 있는 측면이 있고, 종합적인 관련시스템도 부재한 현실이다. 본 논문에서는 AIS와 연계한 항로표지의 관리시스템을 구축하였다. 시스템의 구성은 항로표지와 선박의 데이터를 취득하는 AIS시스템과 전자해도상에 표시하기 위한 AIS Viewer의 운용프로그램으로 나누어 구축하였다.

• Radiation Oncology Journal
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• 제32권2호
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• pp.84-94
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• 2014

Purpose: To quantify the cardiac dose reduction during breathing adapted radiotherapy using Real-time Position Management (RPM) system in the treatment of left-sided breast cancer. Materials and Methods: Twenty-two patients with left-sided breast cancer underwent CT scans during breathing maneuvers including free breathing (FB), deep inspiration breath-hold (DIBH), and end inspiration breath-hold (EIBH). The RPM system was used to monitor respiratory motion, and the in-house self respiration monitoring (SRM) system was used for visual feedback. For each scan, treatment plans were generated and dosimetric parameters from DIBH and EIBH plans were compared to those of FB plans. Results: All patients completed CT scans with different breathing maneuvers. When compared with FB plans, DIBH plans demonstrated significant reductions in irradiated heart volume and the heart $V_{25}$, with the relative reduction of 71% and 70%, respectively (p < 0.001). EIBH plans also resulted in significantly smaller irradiated heart volume and lower heart $V_{25}$ than FB plans, with the relative reduction of 39% and 37%, respectively (p = 0.002). Despite of significant expansion of lung volume using inspiration breath-hold, there were no significant differences in left lung $V_{25}$ among the three plans. Conclusion: In comparison with FB, both DIBH and EIBH plans demonstrated a significant reduction of radiation dose to the heart. In the training course, SRM system was useful and effective in terms of positional reproducibility and patient compliance.

• 대한교통학회지
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• 제29권3호
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• pp.41-48
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• 2011

차량의 각종 안전장치 및 운전자 모니터링 장치에서 운전자의 상태를 파악하려 할 때는 운전자, 자동차, 도로 환경의 측정 변수들이 통합적으로 수집되고 해석되어야 한다. 본 논문에서는 운전 상황을 통합적이고 종합적으로 분석하기 위하여 일정한 시간 주기로 운전자, 차량, 도로 주변 환경과 같은 다양한 영역으로부터 데이터를 동기화하여 수집하는 실시간 차량 모니터링 시스템을 제안한다. 제안한 시스템은 소프트 동기화 메커니즘으로 다중 정보를 동기화하여 수집한다. 이는 하나의 마스터 시간과 차량 상태와 운전자 상태 등의 다양한 영역의 데이터들의 키 값들을 동일한 시간 주기로 하나의 파일에 저장하고, 각각 다양한 영역의 데이터들은 저장할 때 마스터 시간과 함께 저장함으로써 후에 특정 시간에 운전 상황을 쉽게 찾아 볼 수 있게 한다. 본 논문에서는 구현된 시스템으로 9명의 피험자의 인지 부하 실험에서 데이터를 수집하는 예를 보인다.

• 대한의용생체공학회:의공학회지
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• 제44권2호
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• pp.125-138
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• 2023

The development of AI systems for radiation therapy is important to improve the accuracy, effectiveness, and safety of cancer treatment. The current system has the disadvantage of monitoring patients using CCTV, which can cause errors and mistakes in the treatment process, which can lead to misalignment of radiation. Developed the PMRP system, an AI automation system that uses depth cameras to measure patient's fine movements, segment patient's body into parts, align Z values of depth cameras with Z values, and transmit measured feedback to positioning devices in real time, monitoring errors and treatments. The need for such a system began because the CCTV visual monitoring system could not detect fine movements, Z-direction movements, and body part movements, hindering improvement of radiation therapy performance and increasing the risk of side effects in normal tissues. This study could provide the development of a field of radiotherapy that lags in many parts of the world, along with the economic and social importance of developing an independent platform for radiotherapy devices. This study verified its effectiveness and efficiency with data through phantom experiments, and future studies aim to help improve treatment performance by improving the posture correction mechanism and correcting left and right up and down movements in real time.

• 산업공학
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• 제12권3호
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• pp.374-381
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• 1999

In this paper, we propose an architecture of the DNC system for Shop Floor Control/Point of Production(SFC/POP). The DNC system to be presented this paper retrieves line-up sheets which include the drawing information, making a index database for line-up sheets, NC programs and tool adjustment data. And it is interface with a raw material, jig and tool information. Also, the DNC system transmits operation information to real workers rapidly, and supports realtime monitoring by collecting the state information of machines directly. In the analysis and design phases, this paper models realtime events using the state transition diagrams. In the implementation phase, we use the ORACLE DBMS(Database Management System) as the DBMS and Developer 2000 and Microsoft Visual C++ 5.0 as the programming tools.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 1998년도 춘계학술대회 논문집
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• pp.310-315
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• 1998

This study includes noise automatic inspection system for washing machine auto-transmission one of modern home necessary. We effort to find and certificate sound noisesource by sound power and sound intensity, and apply to frequency analysis in vibration related sound noise. Still more we have been studying to data acquisition and programming for MS VisualBasic version 5.0. System component is below. 1) Pentium PC for data acquisition. 2) DSO for noise acquisition. 3) S/W for comparison and decision. 4) I/F Board for data communication. Wave form data through the DSO are converting to ASCII code data. The ASCII code through binary converting S/W are to be decision fitness or the badness comparison S/W. Finally, we will making noise monitoring system and automatic inspection system.

• 한국응용곤충학회지
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• 제60권4호
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• pp.357-361
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• 2021

침입우려 고위험 해충 9종(Aceria diospyri, Bactrocera dorsalis, Bactrocera minax, Bactrocera tsuneonis, Cydia pomonella, Lobesia botrana, Proeulia sp., Solenopsis invicta, Stephanitis takeyai)에 대한 예찰조사를 2020년 4월부터 10월까지 전국 7개 권역, 78지역, 222지점에서 실시하였다. 조사기간 동안, 총 12,045개의 트랩운용/달관조사를 실시하였으며, 9종 모두 발견되지 않았다. 침입우려 고위험 해충 9종에 대한 예찰조사는 2018년부터 시작되었으며, 3년동안의 조사연구를 통해 7개 대학이 참여하는 전국단위의 외래해충 감시체계가 구축되었고 예찰조사 거점 지역들을 확보하였다.

• 로봇학회논문지
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• 제4권3호
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• pp.177-184
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• 2009

This paper presents an active assisted-living system in wireless sensor and actor network (WSAN) in which the mobile robot roles an actor. In order to provide assisted-living service to the elderly people, position recognition of the sensor node attached on the user and localization of the mobile robot should be performed at the same time. For the purpose, we use received signal strength indication (RSSI) to find the position of the person and ubiquitous sensor nodes including ultrasonic sensor which performs both transmission of sensor information and localization like global positioning system. Active services are moving to the elderly people by detecting activity sensor and visual tracking and voice chatting with remote monitoring system.

• Nuclear Engineering and Technology
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• 제46권6호
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• pp.875-882
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• 2014

In terms of safety and the efficient management of spent fuel storage, detecting failed fuel is one of the most important tasks in a CANada Deuterium Uranium (CANDU) reactor operation. It has been successfully demonstrated that in a CANDU reactor, on-power failed fuel detection and location systems, along with alarm area gamma monitors, can detect and locate defective and suspect fuel bundles before discharging them from the reactor to the spent fuel storage bay. In the reception bay, however, only visual inspection has been used to identify suspect bundles. Gaseous fission product and delayed neutron monitoring systems cannot precisely distinguish failed fuel elements from each fuel bundle. This study reports the use of a sipping system in a CANDU reactor for the integrity assessment of spent fuel bundles. The integrity assessment of spent fuel bundles using this sipping system has shown promise as a nondestructive test for detecting a defective fuel bundle in a CANDU reactor.

• Corrosion Science and Technology
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• 제11권6호
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• pp.242-246
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• 2012

This measurement represents the effectiveness of sacrificial anode cathodic protection (SACP) system in a coastal bridge structure. To verify the cathodic protection (CP) effect, the monitoring sensor (DMS-100) that could measure potential, corrosion rate, current, concrete resistivity, and temperature was embedded. The measurement conducted for three years after CP system was installed. Specifically, due to the fact that fresh water and sea water was repeated in the bridge structure, this bridge structure presented special CP behavior. Measurement factors were CP potential, CP current, concrete resistivity, and depolarization potential. In addition, visual inspection was also carried out. As a result of current and depolarization measurement, CP system was well activated in most piers.