• 한국군사과학기술학회지
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• 제11권1호
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• pp.5-14
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• 2008

In this paper, we propose operational concepts and technology requirements for guard and surveillance robots in military field. After surveying on current trend of guard robots, we present an operational scenario and technology requirements. To begin with, we discriminate the use of fixed type guard robots(fixed robots) and mobile guard and surveillance robots(mobile robots). Fixed robots are used for substituting daily guard by human soldier. In contrast, mobile robots are used for compensating shadow area where not to be covered by fixed type robots. To be specific, mobile robots adopt communication relays to extend operational range and sensor networks to collecting information. In addition, we present technology requirements composed of wireless communication system, platform, sensor nodes, unmanned driving technology, power supply system and IFF etc. In conclusion, in order to maximize co-operational functionality, fixed robots and mobile robots should be tightly related.

• Journal of Preventive Medicine and Public Health
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• 제41권4호
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• pp.219-224
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• 2008

Due to heightened concerns regarding possible bioterrorist attacks, the Korea Center for Disease Control and Prevention introduced syndromic surveillance systems, which have been run by emergency departments in hospitals throughout Korea since 2002. These systems are designed to identify illness clusters before diagnoses are confirmed and reported to public health agencies, to mobilize a rapid response, and thereby to reduce morbidity and mortality. The Korea Center for Disease Control and Prevention performed drop-in syndromic surveillance successfully during the World Cup Football Games in 2002, the Universiad games in 2004, and the Asian Pacific Economic Cooperation meeting in 2005. In addition, sustainable syndromic surveillance system involving the collaborative efforts of 125 sentinel hospitals has been in operation nationwide since 2002. Because active data collection can bias decisions a physician makes, there is a need to generate an automatic and passive data collection system. Therefore, the Korea Center for Disease Control and Prevention plans to establish computerized automatic data collection systems in the near future. These systems will be used not only fur the early detection of bioterrorism but also for more effective public health responses to disease.

• 한국통신학회논문지
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• 제38C권2호
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• pp.172-180
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• 2013

본 논문에서는 DSRC(Dedicated Short Range Communication)를 이용한 감시 대상의 검출을 통해 동작하는 카메라 기반의 감시 시스템 환경에서 저장 공간과 운영 전력 등 소비되는 자원을 절약하면서도 더 높은 사건 보고율을 달성할 수 있는 에너지 효율적 감시 카메라 운영 방법을 제시한다. 제안하는 감시 카메라 운영 방법은 입/출(入/出) 특성을 포함한 도로 환경과 카메라의 시야각을 추상화한 모델 정보와 감시 대상에 부착된 DSRC 단말로부터 수집되는 차량의 속도 벡터 정보를 고려하여 해당 감시 대상을 완벽하게 촬영하기 위해 사용되어야 할 카메라의 개수를 계산하고, 순차적으로 작동/종료함으로써 감시 시스템에서 사용되는 자원을 절약한다. 또한, 기존 감시 시스템의 운영 방식과 제안 방식의 성능 비교를 위한 모의실험을 수행하여 감시 시스템 운영비용의 절감 효과를 보였다.

• 한국군사과학기술학회지
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• 제18권4호
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• pp.350-357
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• 2015

Many countries have been developing and operating an underwater surveillance system in order to protect their oceanic environment from infiltrating hostile marine forces which intend to lay mines, conduct reconnaissance and destroy friendly ships anchored at the harbor. One of the most efficient methods to detect unidentified submarine approaching harbor is sensing variation of magnetism of target by magnetic sensors. This measurement system has an advantage of high possibility of detection and low probability of false alarm, compared to acoustic sensors, although it has relatively decreased detection range. The contents of this paper mainly cover the analysis of possible effectiveness of magnetic sensors. First of all, environmental characteristics of surveillance area and magnetic information of simulated targets has been analyzed. Subsequently, a signal processing method of separating target from geomagnetic field and methods of estimating target location has been proposed.

• 융합신호처리학회논문지
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• 제10권2호
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• pp.112-119
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• 2009

본 논문에서는 옥외 환경에 강인한 영상 감시알고리듬을 구현하는 과정을 기술하였다. 옥외 감시시스템의 어려운 처리 과정들 중 하나는 배경화면을 효과적으로 갱신하는 것이다. 배경 영상에는 건물, 나무들, 이동하는 구름 및 기타 다른 물체들의 그림자를 포함하기 때문에. 시간과 조명광에 따라 변화한다. 이는 옥외에서의 감시시스템의 성능을 저하시킨다. 따라서 본 논문에서는 배경 영상을 효과적으로 갱신하기 위해 적응 혼합 가우시안 필터와 컬러불변성을 화소레벨에서 적용하여 옥외에서도 강인한 영상 감시알고리듬을 제안하였다. 그 결과, 다양한 그림자가 있는 옥외에서 움직이는 대상 물체를 검출할 수 있음을 확인하였다.

• Journal of Medicine and Life Science
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• 제21권3호
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• pp.72-77
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• 2024

Enterohemorrhagic Escherichia coli (EHEC) produces Shiga toxin, which causes diarrhea, hemorrhagic colitis, and hemorrhagic uremic syndrome. The Korea Center for Disease Control and Prevention (KCDC) has designated EHEC as a legal infectious disease and has conducted laboratory surveillance. This study aimed to compare the demographic, epidemiological, clinical, and laboratory characteristics of EHEC cases in Jeju Province between August 2017 and November 2023, notified by two registry routes. The data were sourced from the integrated disease health and health management system managed by the KCDC. Cases reported due to experiencing gastrointestinal symptoms, or contacts of each case were defined as the "symptomatic" group. In contrast, cases with positive findings during a health checkup or laboratory surveillance were defined as the "screening" group. The symptomatic and screening groups had 35 and eight patients, respectively. There were significant differences in the age and seasonal distribution. The selection group was 20-59 years old in the main age distribution and registered evenly throughout the four seasons. In comparison, the symptomatic group was younger or older and not registered in the winter. These findings may be used to establish a more appropriate surveillance system for diarrheal outbreaks.

• 대한안전경영과학회지
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• 제16권3호
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• pp.133-143
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• 2014

The purpose of this article is to search stakeholders' recognition related to Fire Construction Surveillance system; a client(order), fire fighting officer, supervision company, construction company, design company, other. The paper provides 4 important things. Firstly, a client(order) suggested the lowest recognition in the needs about the need of separation order, that of contract for any construction work limited registered companies, and that of standard price for engineering.. Secondly, the design company is lowest recognition in guidance and control participating in construction-design phase. Thirdly, the design company is lowest in adjustment about manpower-allocation according to allocation criteria of technical manpower. Fourthly, a client(order) and supervision company are relatively lower than other stakeholder in necessity on special education and training system for auditor in fire protection construction. Almost all related matters are related to more or less stakeholders' interest.

• 디지털융복합연구
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• 제11권9호
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• pp.195-200
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• 2013

영상 보안 시스템에서 유기물은 공공장소에서 의도적으로 버려진 물건으로서 카메라 개수가 많아지는 환경에서 지능적 시스템을 통해 자동적으로 검지되어야 한다. 이 연구에서는 이러한 유기물을 자동적으로 감지하여 그 영상 정보를 저장할 수 있는 고해상도 영상의 무선 인터페이스가 가능한 스마트 보안 디스크 시스템의 설계 방식을 다룬다. 연구에서 제안된 설계 시스템을 실제로 구현하여 고해상도 영상을 압축하지 않은 채 초당 60 프레임 전송이 가능함을 확인하였고, 이를 RAID 구성의 디스크 시스템에 저장할 수 있음을 보였다. 또한 제안된 영상 보안 소프트웨어는 PAT 성능지수에서 80%의 우수한 검지율을 보인다.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2006년도 Asia Navigation Conference
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• pp.123-128
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• 2006

This paper presents the design of a surveillance night vision system for marine ships. Both a hardware system and software modules for tracking control are developed. In order to control each control axis with compensation for ship motion, the two-degree of freedom(TDF) PID controller is designed and its parameters are tuned using a real-coded genetic algorithm(RCGA). Simulation demonstrates the effectiveness of the proposed system.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.789-790
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• 2008

In this paper, we introduce the multi-target-based auto surveillance algorithm. Multi-target-based surveillance system detects intrusion objects in the specified areas. The proposed algorithm can divide into two parts: i) background generation, ii) object extraction. In this paper, one of the optical flow equation methods for estimation of gradient method used to generate the background [2]. In addition, the objects and back- ground video images that are continually entering the differential extraction.