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수동운전방식에서의 PSD 출입문 신호반응 시간 개선 방안 연구
이무호(Lee moo ho),김찬겸(Kim chan cum),이석종(Lee suk jong),이수영(Lee soo young) 한국철도학회 2008 한국철도학회 학술발표대회논문집 Vol.- No.-
Platform Screen Door(PSD) has been installed and operated at seoul subway line 1~4 in the manual train operation mode(ATS/ATC) by SeoulMetro since 2005. SeoulMetro uses the wireless (RF) communication system and the train door detection system for the link between the train and PSD doors opening/closing motion in the manual train operation mode. For the convenience and safety of passengers, the train doors and the PSD doors opening/closing shall be synchronized as much as possible. In ATO(Automatic Train Operation) mode which provides the interface between train control system and PSD system, ATO signaling system makes the train doors and PSD doors open/close command signals systematically, so PSD doors can be opened/closed almost simultaneously with the train doors. But, in the manual train control(ATS/ATC) mode, PSD system needs to detect the train doors open/close operation and make PSD open/close command signals to actuate PSD doors. These PSD open/close commanding process cause time delay of PSD doors opening/closing motion in response to the train doors opening/closing motion. Sometimes the response delay time can be over 1 second, which is not proper to operate PSD, and need to be reduced This paper presents the reduction method of the PSD response delay time to improve the convenience and safety of passengers.
바이패스용 3-Way 밸브를 장착한 온수 난방시스템의 압력 및 유량 특성 평가
허전(Jurn Hur),이석종(Suk-Jong Lee),성재용(Jae-Yong Sung),이명호(Myeong Ho Lee),윤재동(Jai Dong Yoon) 대한설비공학회 2007 설비공학 논문집 Vol.19 No.3
A 3-way valve has been applied to a distributor in a hot-water heating system and the performance of the system was evaluated in view of the variations of pressure drop and flow rate. The 3-way valve has been designed to bypass overplus hot-water when a control valve is closed. Note that the flow goes through heating pipeline in normal operation. In the present study, the measured pressure drops in each part of the flow paths show that the contribution to the total pressure drop is in the order of the supply header with control valves, piping system of each room and return header of the distributor, even though the amount of it is different according to the flow paths. As a result of performance test by sequential closing of the control valves, the variations of pressure drop and flow rate in the distributor with 3-way valves is much lower than those with previous 2-way valves, which prevent noises induced by pressure fluctuations.
Fuzzy Linearity of the Seminormed Fuzzy Integrals of Interval-valued Functions
김미혜(Mi-Hye Kim),김미숙(Mi-Suk Kim),이석종(Seok Jong Lee) 한국지능시스템학회 2004 한국지능시스템학회논문지 Vol.14 No.3
일반적으로 Lebesgue 적분에서 성립하지만 퍼지적분에서 성립되지 않는 성질이 몇 가지 있다. 그 중 하나가 선형성이다. 본 논문에서는 선형성 표현식에서 덧셈을 supremum 으로 곱셈을 infimum으로 대신한 퍼지선형성의 정의를 소개하고 구간값을 갖는 함수의 준노름 퍼지적분이 퍼지가법성을 갖는 퍼지 측도와 연속인 준 노름이 saturated 조건을 만족할 때, [Max] 조건을 만족하는 가측함수에 대해 퍼지선형성이 성립함을 보였다. In general, the fuzzy integral lacks some important properties that Lebesgue integral possesses. One of them is linearity. In this paper, we introduce fuzzy linearity in which we use the supremum and the infimum instead of additon and scalar multiplication in the expression of linearity and show that the fuzzy linearity of the seminormed fuzzy integrals of interval-valued functions when the fuzzy measure g is fuzzy additive, the continuous t-seminorm is saturated and measurable functions satisfy the condition[Max].
Capillary Aneurysm 4예 -흑색종과의 임상적 감별진단-
지성근 ( Seong Geun Chi ),정홍대 ( Hong Dae Jung ),이석종 ( Seok Jong Lee ),김병수 ( Byung Soo Kim ),이원주 ( Weon Ju Lee ),김도원 ( Do Won Kim ),윤길숙 ( Ghil Suk Yoon ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.12
Capillary aneurysm is classically described as a suddenly growing dark papule, and is also known as thrombosed capillary or vein. It is clinically significant that the clinical features of capillary aneurysm are closely similar to those of malignant melanoma or dysplastic nevus. The histopathological finding of capillary aneurysm reveals dilated thin-walled venule(s) just beneath the hyperplastic epidermis, lined by a single layer of endothelium and a thrombus in the lumen. This abstract focuses on four patients who presented with a dark black-colored dome-shaped nodule and clinical impression included malignant melanoma, dysplastic nevus, angiokeratoma and lymphangioma circum-scriptum. We herein report four cases histologically diagnosed as capillary aneurysm, which should be considered for differential diagnosis. (Korean J Dermatol 2007;45(12):1265∼1269)
유아혈관종의 임상병리조직학적 고찰: GLUT-1염색의 진단적 유용성
지성근 ( Seong Geun Chi ),정홍대 ( Hong Dae Jung ),이석종 ( Seok Jong Lee ),김병수 ( Byung Soo Kim ),이원주 ( Weon Ju Lee ),김도원 ( Do Won Kim ),정호윤 ( Ho Yun Chung ),윤길숙 ( Ghil Suk Yoon ) 대한피부과학회 2009 大韓皮膚科學會誌 Vol.47 No.4
Background: Hemangioma of infancy (HOI) is one of the most common tumors in childhood. Their clinical features can on occasion look like those of other vascular tumors and malformations, so the correct differentiation of HOI may not always be easy. Objective: The purpose of this study was to review the clinicopathological features of HOIs and to particularlyexamine the usefulness of glucose transporter protein isoform-1 (GLUT-1) immunohistochemical stain (IHS) as a specific marker of HOI. Methods: This study was conducted at the Vascular Anomaly Clinic of Kyungpook National University Hospital during 11 years (1998~2008). Sixty-two cases were selected in addition to selecting other tumors and malformation as a control group. We then reviewed their clinical features and the results of H&E and GLUT-1 IHS for making the differential diagnosis.Results: The male to female ratio was 1: 2.88. The head and neck were the most commonly involved sites. The complications included ulceration and/or bleeding (12.9%), scarring (9.7%), infection (4.8%), ocular complications (4.8%) like visual axis occlusion, and pain (1.6%). Three phases of proliferating, involuting and involuted of a HOI comprised 11.3%, 37.1% and 51.6% of the lesions, respectively, from the clinical view point and 11.3%, 48.4% and 40.3% of the lesions, respectively, from the pathological point of view. GLUT-1 was positively expressed on almost all of the HOIs (47/57, 82.5%), except for 10 HOIs of the involuted phase and the other controls. Conclusion: The clinicopathological findings of this study were similar with those of the previous reports. The expression of GLUT-1 by a HOI can be helpful to make the correct diagnosis from other vascular tumors and malformations. (Korean J Dermatol 2009;47(4):386~394)