• Proceedings of the KIEE Conference
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• 2004.04a
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• pp.238-240
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• 2004

현재 우리나라에서 사용 중인 신호시스템은 지상신호 방식인 자동폐색장치(ABS)를 사용한다 이는 선로를 패색구간으로 배분한 후, 각각의 패색 구간에 설치된 신호기에 의해 열차의 이동을 실행한다 이러한 신호체계에 문제점이 발생할 경우, 기관사에게 주의를 환기시켜 강제적으로 열차를 정지시키는 역할을 하는 자동열차정지장치(ATS)가 1969년부터 도입, 사용 중에 있다. 본 논문에서는 ATS 시스템의 고속, 고밀도 운전 적용 가능성 및 차상신호방식 사용시의 ATS 적용 가능성에 대해 분석한다.

• Journal of Yeungnam Medical Science
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• v.3 no.1
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• pp.319-323
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• 1986

Leriche syndrome is a chronic disorder mostly in male and is a specific symptom complex due to thrombotic obliteration of the aortic bifurcation as result of a atherosclerotic change. The symptoms include 1) extreme liability to fatigu of both lower limbs; 2) symmetric atrophy of both lower limbs; 3) pallor of the legs and feets; 4) inability to maintain stable erection. There are several methods for surgical management of this disorder; 1) thromboendarterectomy with or without sympathectomy; 2) aortoiliac bypass graft; 3) aortofemoral bypass graft. Here we report a case of Leriche syndrome which was successfully managed with arotobifemoral bypass graft with Dacron and reviewed literatures on it briefly.

• The KIPS Transactions:PartB
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• v.13B no.7 s.110
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• pp.663-670
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• 2006

For virtual target to be displaying on real image realistically, it is essential to determine the location of the virtual object together with producing the occlusions area after registering two world. In this paper, we propose the new method to solve occlusions which happens during virtual target moves according to the simulated route on real image. For this purpose, we first construct three dimensional virtual world by DEM of experimental area and register CCD camera image on it by visual clues. Next, we also propose a method to solve the occlusion using snake and picking algorithm which can extract the three dimensional information of the position happening occlusion in the image and can use it when target moves that area. In the experiment, we proved the effectiveness of the proposed method in the environment which a partial occlusions happens.