• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2010.10a
• /
• pp.216-223
• /
• 2010

원자력발전소의 방화지역에서 화재가 발생할 경우 케이블의 화재리스크는 온도, 열속, 화염 등 열적 특성에 의해 평가된다. 원전의 안전정지 기능에 사용되는 각종 케이블은 설계관리 및 성능분석을 위해 화재실증실험으로 열적 특성을 실측하여야 하지만 다양한 화재시나리오에 대한 실험 조건 확보와 실험 비용 등 제약이 따른다. 이에 따라 화재모델 FDS (Fire Dynamics Simulator)의 최신버전에 포함된 THIEF (Thermally-Induced Electrical Failure) 모델을 이용하여 국내 원전의 안전정지 케이블에 대한 화재모델링 분석을 수행하였다. 이 연구에서는 케이블이 설치된 형태에 따라 일정 열속에 대한 자켓 온도와 경계조건에 대한 온도분포를 분석하였다. 본 연구 결과 THIEF 모델은 원전 방화지역의 화재에서 안전정지 케이블의 내부온도를 예측할 수 있는 화재모델로 사용가능한 것으로 확인되었다.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.13 no.1 s.28
• /
• pp.61-67
• /
• 2007

This paper describes the implementation procedures and results of Fishery Safety and Security System to secure an aquaculture area from a thief. The system designed with various functional modules to implement selectively available system providing low cost to high cost and simple function to high function according to user's requirement in a practical fishing fields. In the abalone farm field located in Jin island, Jeonranam province and having condensed aquaculture facilities with 50 cages (10 row by 5 column) within 0.5 miles from coast, practical field tests are carried out. As results from that tests, it is found that the system can guard not only the whole area of cultivating farm field but also each cages with detail.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.13 no.4
• /
• pp.55-63
• /
• 2007

The Group Digital Surveillance System for Fishery Safety and Security (GDSS-F2S) is to provide the target tracking information and the target identification information in order to secure an huge aquaculture farm-field from a thief. The two information, however, is not enough to indict the thief due to the lack of lawful evidences for the crime actions. To overcome this problem, we consider the target image information as one of solutions after discussion with the effective countermeasure tools for the crime actions with scenario-based analysis according to the geological feature of aquaculture farm-field. To capture the real-time image for the trespassing targets in the aquaculture farm-field area, we developed the image capture system which is consists of ultra sensitive CCD(Charge-Coupled Device) camera with 0.0001 Lux and supplementary devices. As results from the field tests for GDSS-F2S with image capture system, the high definite images of the vehicle number plate and shape, person's actions and features are obtainable not only day time but also very dark night without moon light. Thus it is cleary known that the improved GDSS-F2S with image capture system can provide much enough lawful evidences for the crime actions of targets.

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
• /
• 2010.04a
• /
• pp.31-36
• /
• 2010

원전 방화지역에서 화재가 발생할 경우 케이블 고장으로 인한 기기의 오동작 및 안전정지 기능에 미치는 영향 평가가 필요하다. 본 논문에서 FDS의 THIEF 모델을 이용하여 환기조건 및 열발생율 변화에 따른 원전 안전정지 케이블의 열적 특성을 분석하였다.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2008.11a
• /
• pp.920-923
• /
• 2008

We developed the Loss Preventing System using RFID in this paper. This system notifying and knowing that inform loss things from thief to individual precious things. Also, we design and implement to be response from loss thing, and we confirmed stability and proper by real field testing.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• v.29 no.1
• /
• pp.279-283
• /
• 2005

Fisheries Surveillance System (FSS) is to protect fishing farms a thief. To implement the FSS a speacial test system which can be operate at any natural environments in the practical farm fields is needed. This paper describes some up coming results for the implementation of Radar Car as the special test system which consists of small van-type car, commercial Radar system, Radar Scan Converter(RSC) and, computer system. This Radar Car is designed to test the influences of sea clutter according to the height of Radar Scanner and to verify some effects of side-lobe suppression by special materials attached at each side of the Radar scanner. The post digital signal processing of digital radar signal comes from Radar Scan Converter(RSC) is also discussed, then designed and developed a new RSC in this study.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
• /
• 2004.11a
• /
• pp.97-101
• /
• 2004

In this paper, we study the fishery detection system for protection of an aquamlture farm. The FDS(fishery detection system) will be recognize a robbing vessel with real time and variance the position of aquaculture farm. We try to develop the F-AIS(Fishery Automatic Identification System) which am be detect approaching object to aquaculture farm and distinguish our fishing boot from thief vessel. The F-AIS with low price and wideband responsibility am be adopt to the FDS, i. e. the identification for a small-sized fishing boots.

• Journal of the Korean Society of Marine Environment & Safety
• /
• v.10 no.2 s.21
• /
• pp.49-53
• /
• 2004

In this paper, we study a FDS(fishery detection system) for protection of an aquaculture farm. The FDS will identify a robbing vessel with real time and detect variance of the position of aquaculture farm. We also propose a F-AIS(Fishery- Automatic Identification System), which can detect the object approaching to aquaculture farm and distinguish fishing boats from thief vessel The F-AIS with low price and wideband responsibility will be adopted to the FDS.

• Proceedings of KOSOMES biannual meeting
• /
• 2005.11a
• /
• pp.71-74
• /
• 2005

This paper describes Fishery Safety and Security System using F-AIS based on the concepts of RFID(Radio Frequency Identification). This system is to track, protect and arrest the thief who invaded in an fishing ground. The system composed with various functional modules to implement selectively available system providing low cost to high cost and simple function to high function according to user's requirement in a practical fishing fields. Sea trial tests are carried out at Mokpo, Busan and Incheon and, it is found that the system can guard the wide area of cultivating farm field.

• Journal of the Korean Institute of Rural Architecture
• /
• v.14 no.3
• /
• pp.121-128
• /
• 2012

In recent years, the number of returnfarmer is increasing in Korea, interlinked with baby boomer's retirement. One of the returnfarmer's serious problems is the decision making for his returnfarm place. This study intends to get information about a ideal returnfarm place by interpreting Jung-Hwan Lee's written in the Choseon Dynasty, and to use it for returnfarmer's decision making as a lesson in the present age. In the results, this study could finds 8 evaluation criteria in his book except his 4 requirements for a ideal place to live : Ji-ri(地理, geographic), Saeng-ri(生理, physiology), In-sim(人心, popular mind), and San-su(山水, landscape), which are (1) distance from seoul, (2)multi-habitation, (3)convenient transportation, (4)a natural disaster, (5)thief(public order), (6)refuge from a war & escaping from a troubled society, (7)feeling from a place, and (8)Jang-gi(poison coming from earth).