발생과정의 담세관과 그 주위 간세포 소기관에 관한 미세구조적 관찰

이성을,신영철 대한해부학회 1994 Anatomy & Cell Biology Vol.27 No.4

기질성 정신장애환자에서 불안과 우울

신석철,왕성근,강민희,신윤오 충남대학교 의과대학 지역사회의학연구소 1990 충남의대잡지 Vol.17 No.2

Atuhors applied the self-rating anxiety scale(SAS) and the self-rating depression scale(SDS) devised by Zung to 95 psychiatric outpatients with organic mental disorder in order to investigate about anxiety and depression manifest in organic mental disorder and tried factor ananlysis using both test scores. 1. In SAS, 4 factors were extracted as paresthesia & facial flushing, fear & dizziness, palpitation & urinary frequency, and nervousness & fatigability. 2. In SDS, 4 factors were extracted as depressed affect & suicidal rumination, dissatisfaction & indecisiveness, fatigability & sleep distrubance, and emptiness & hopelessness.

내동정맥루술후의 수지운동이 동정맥루의 혈류와 개존에 미치는 영향

신현석,조원현,이성문,우성구,김현철 大韓脈管外科學會 1995 大韓脈管外科學會誌 Vol.11 No.1

디지탈 계전기법에 의한 전선로 보호의 최적화

신명철,김철환,성낙환 成均館大學校 科學技術硏究所 1990 論文集 Vol.41 No.1

To maintain the high reliability and stability in the large scale electric power system for a stabilized power supplying, it requires an accurate high speed digital distance relaying techniques. For this purpose, when it comes to faults with the power system, the digital distance relaying techniques must be investigated to extract the fundamental frequency component and to predict fault location. In this thesis, it is presented the methodology of DFT(discrete Fourier transform), which accompanied aliasing, picket -fence effect, and leakage in the process of extracting fundamental frequency component and an algorithm of extracting fundamental frequency component, using the Kalman filter theory to improve upon these disadvantages. Also, a two-state and three---state Kalman filter are considered for the symmetrical components estimatin of voltages and currents respectively. It is presented an efficient digital distance relaying techniques for the purpose of extracting fundamental frequency component. Also, to confirm the validity of Kalman filtering techniques, it is shown the experimental results obtained by using the digital simulation of power system. And, it is discussed the extracted results of fundamental frequency components by means of the Fourier transform and Kalman filtering techniques.

다중 프로세서 컴퓨터 시스템에서 상호접속망의 효율적인 운용을 위한 연구

申仁澈,朴贊政,金成鍾 단국대학교 1989 論文集 Vol.23 No.-

Interconnection Network is to provide communication among functional modules in multiprocessor system and multistage interconnection network has various conflict resolution strategy. In this paper, Generalized Cube network is considered and two situations are examined; an memory module is equally likelly to be addressed b a processor and a processor has a favorite memory. Simulation result shows the improved performance (request service time and memory bandwidth) in some condition. We propose the effective condition of operation in interconnection network.

두부손상 환자의 정신과적 합병증에 관한 장애 감정례의 일반 사항에 관한 분석

신석철,왕성근,신윤오,김덕호,김상국,강동숙 충남대학교 의과대학 지역사회의학연구소 1991 충남의대잡지 Vol.18 No.2

Authorst ried retrospective analysis to find out general characteristics of the patients undergoing disability evaluation at the department of psychiatry Chungnam National University Hospital from 1986 to 1990. The subjects, who were suffered from psychiatric complications due to head trauma by traffic accident, were 66 patients and they were classified depending on the demographic status, situations of traffic accident, evalaution periods, whether or not perform operation, and rates of evaluated disability and diagnosis. The results were summarized as follows. 1. General background of the subjects were as follows. 1) The frequency order of request were court(59 %) and insurance company(19.7%). 2) The place of accident was more common in large city, common accident vehicle were bus, truck, and cabs. 3) The season of accident were more common in Spring and Autumn. 2. Male(71.2%) was more common than in female and more common in the age group of 5-19 years old(37.9%). The most frequent job of the patients was labour, and the education level was more common in the graduates of elementary school(47.9% ). 3. The interval between accident and evaluation was most frequent in 12-23 months(47.5%), and duration of evaluation was mostly 14 to 21 days. Performed brain operation was 31.8% and non-operated patients was 50.0%. The rates of disability according to the McBride's disability evaluation were mostly belonged to the group of beow 40%(74.1%). 4. The final diagnosis after evaluation were organic personality disorder(45.5%) and dementia(31.8%).

인슐린 비의존형 당뇨병 환자에서 혈장 Endothelin-1농도의 변화

신양수,조희충,김원식,국기용,김용화,정종훈,문철웅,배학연,양성훈 朝鮮大學校 附設 醫學硏究所 1992 The Medical Journal of Chosun University Vol.17 No.2

Endothelin(ET) is a 21-residue peptide originally isolated from the cultured porcine endothelial cells. There are at least three genes for endothelin:endothelin-1(ET-1), endothelin-2(ET-2), and endothelin-3(ET-3). Endothelins are present in various human biological fluids including plasma, urine, breast milk, and saliva and have been found elevated plasma ET concentrations in patients with diabetes mellitus, Patients undergoing maintenance hemodialysis due to chronic renal failure, patients with acute myocardial infarction, and patients with subarachnoid hemorrhage. Endothelial cell damage is suspected to occur in diabetic patients and may be one important cause of angiopathy, a major complication in diabetes mellitus. The elevation of ET in diabetic patients may be a marker of, and further exacerbate, their vascular disease. We measured the levels of ET-1 in plasma of 50 patients with non-insulin dependent diabetes mellitus(NIDDM) and 25 normal subjects by radioimmunoassay. The plasma ET-1 concentration (mean±S.D.) in NIDDM was 6.461 A2.510 f㏖/ ㎖, and was significantly higher than in normal subjects (4.567±1.155f㏖/㎖) (P<0.05). The plasma ET-1 concentration (mean±S.D.) in diabetic retinopathy group( 7.15±2.454 f㏖/ml) was significantly elevated than those in otherwise uncomplicated groups (5.348±2.390 f㏖/㎖)(P<0.01). The correlation between any clinical parameters and plasma ET-1 levels in NIDDM was not significant, In conclusion, this study suggest that the elevated levels of ET-1 in diabetic patients may be play a important role in the pathogenesis of diabetic complications.

특징 기반 상표 영상 검색

신성윤,고경철,전근환,이양원 군산대학교 정보통신기술연구소 2000 情報通信技術硏究論文集 Vol.4 No.-

The multimedia informations of text, image, motion picture, and audio are important as core elements for a efficient manipulation. The trademark image is one of the widely used multimedia data in business. A great number of trademark images have been used for a variety service. Therefore, the techniques of storing, retrieval and browsing are required for the Distribution System Management and the Physical Distribution Management. This paper propose the efficient retrieval system of the trademark image using both of the color and shape information.

JPEG에서 필터를 이용한 압축률 개선에 관한 연구

申仁澈,金成鍾,鄭炳善 단국대학교 1995 論文集 Vol.29 No.-

Recently the application of the digital image processing has been increased with technical advances in digital computers. It is necessary to compress the digital image data in order to store and transmit it with real time. It is possible to redisplay the relatively exact image and decrease bandwidth of transmission path with the reduced information by compression. JPEG in ISO and CCITT defines the standard compression and restoration algorithm for grayscale and color still image. In this paper, we propose a method of decreasing higher frequency component and increasing spatial redundancy in image, and the compression ratio. In order to decrease higher frequency components of the images, various filters were used in the preprocessing. Compression ratio and processing time were compared. Results shows the enhanced compression ratio without damage of image quality by using filter in JPEG.

스포츠 비디오 하이라이트 생성

신성윤,고경철,전근환,이양원 군산대학교 정보통신기술연구소 2000 情報通信技術硏究論文集 Vol.4 No.-

Creating Video Highlights provide the important role to the multimedia contents producers and multimedia users that want to create a shorter highlight video scene. This paper propose the new method of creating highlights and the content based video indexing, This indexing, exactly speaking, is event-based video indexing. We deal with soccer, basket ball, and handball that have the events of scoring a goal. The event rule was used to detect the highlight shot about scoring a goal. In video indexing, both of the virtual informations and the captionts are analyzed to create the sports video highlights.