GOOSE 메시지를 이용한 거리계전 IED의 성능 향상

高哲鎭,姜相熙 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

IEC 61850 is the worldwide protocol for the substation automation system. IEG 61850 transports the information which consists of a different format what the information is. If the Information needs real time transmission, GOOSE will be used. And, if the remote current information can transport from a local differential IED to a local distance IED using GOOSE, the distance IED can eliminate the reactance effect. This method improve reliability of the transmission line protection.

두개강내 정맥기형들과 동반된 안와내 해면상 혈관종 1례

조도상,송준혁,김명현,박향권,김성학,신규만,박동빈 대한신경외과학회 1998 Journal of Korean neurosurgical society Vol.27 No.6

mSQL을 이용한 데이터베이스 구현

고성현,조준익 群山大學校 情報通信技術硏究所 1999 情報通信技術硏究論文集 Vol.3 No.-

These days, Internet is a fantastic business in the world, We realized a sample Database using mSQL which is freeware in the academy. In realization, we tested a sample program in the Web browser. Also HTML is acted well in the Web browser. The Web programming which tested in this paper was very simple and easy. We tested a datagram to upload, modify, and delete in the Web browser.

성상신경절 차단 후 발생한 경부 혈종 및 혈흉 : 증례보고

고우석,임경준,유병식,임영재,조성일 朝鮮大學校 附設 醫學硏究所 2006 The Medical Journal of Chosun University Vol.31 No.3

The stellate ganglion block is one of the most frequently performed blocks in the pain clinic due to its wide range of indications and its simplicity. But it has a potential to cause severe complications because there are some major vessels and nerves around the stellate ganglion. We experienced a rare case of intrathoracic bleeding and hematoma in neck after stellate ganglion block. A 61-years old female patient admitted to ER because of breathing difficulty. She was taken stellate ganglion block in local pain clinic 6 hours before the admission to ER. The patient complained of pain in the neck and dyspnea. We confirmed severe hematoma and contrast leakage in thyroid region and hemothorax. So we applied a endotracheal intubation for the airway insurance and surgical hematoma removal and vessel ligation were done. The patient was discharged from hospital after the treatment of pharyngeal and laryngeal hematoma and hemothorax without further problem or complications after 22 days.

제주도 함덕연안의 자치어 출현과 군집구조 : 일변동

고경민,문상욱,고유봉 제주대학교 해양연구소 1996 해양자원연구소연구보고 Vol.20 No.-

The occurrence and community structure of fish larvae at the coastal area of Hamduck. Cheju Island have been studied through the hourly multi-layer sampling with a MTD net for 24 hours on August 10~11, 1989 (at just one site). The multi-layer samplings show that the number of species and individuals at the 1Om and 15m depths are more than those at the surface : the total number of species being 28, the number of species at each depths being 9, 19 and 21 at the depths of 0m, 10m and 15m, respectively. The major fish larvae are chromis notdudtotal 36,454/1000㎥ indv., 92.8%). Enneupterygius etheostomus (total 855/1000㎥ indv., 2.2%, Callionymidae sp.(total 489/1000㎥ indv.. 12%). etc At the surface and the 10m depth the number of individuals changed vividly in time and the largest number of individuals appeared at midnight. This resulted from vertical migration which was caused by the rise of fish larvae living at the 15m depth. At the surface the fish larvae descended about the sunrise and at the 10m and 15m depths they desce-nded slowly after the sunrise. The species diversity of the fish larvae at the 10m and 15m depths was higher than that at the surface and generally was higher in the nighttime than in the daytime. The variation of these values seemed to have a close relationship with the change between the species number and individuals at that time. As a result of clustering analysis at each depth, Gobiidae sp. and Callionymidae sp. occurring at about midni-ght showed close similarity(0.67) at the surface, while three groups represented 0.50 of similarity at the 10m and 15m depths.

黃連湯이 CCl4로 유도된 간중독 흰쥐에 미치는 영향

高元島,朴賢俊,尹炳局,鄭成伊,朴宣東 대한본초학회 1999 大韓本草學會誌 Vol.14 No.2

The purpose of this study is to observe the effects of Hwanglyuntang on serum reactions of CCI₄ treated rats. In this study the experimental rats were divided five groups(Normal, Control, Sample A, Sample B and Sample C). Under the same condition Normal group was fed basal diet and water, the Control group was injected with carbon tetrachloride(CCI₄, 0.5㎖/㎏) and fed a basal diet for 2 weeks, the Sample A group was injected with carbon tetrachloride(CCI₄, 0.5㎖/㎏) and fed the Hwanglyuntang extract(10㎖/㎏) for 2 weeks, the Sample B group was fed the Hwanglyuntang extract(10㎖/㎏) for 2 weeks and injected with carbon tetrachloride(CCI₄, 0.5㎖/㎏), the Sample C group was fed on the Hwanglyuntang extract(10㎖/㎏) for 2 weeks. The change in GOT, GPT, γ-GPT, ALP, LDH activity and Bilirubin level in blood serum were preasured. The obtained results are summarized as follows : It was found that GOT, GPT, γ-GPT, ALP LDH activity and Bilirubin levels in the blood serum of the sample groups, as compared with control group, sample group was significantly decreased.

신장의 원시성 신경외배엽 종양

송상용,조은윤,이정원,고재향,김미경,김대식,고영혜 대한병리학회 1998 Journal of Pathology and Translational Medicine Vol.32 No.3

어트랙터 해석을 이용한 AISI 304강 열화 신호의 카오스성 평가

고준빈,오상균,김홍배,이성구,이영호 韓國工作機械學會 2000 한국생산제조학회지 Vol.9 No.2

This study proposes the analysis and evaluation method of time series ultrasonic signal using the chaotic feature extraction for degradation extent. Features extracted from time series data using the chaotic time series signal analyze quantitatively material degradation extent. For this purpose, analysis objective, in this study, is fractal dimension, lyapunov exponent and strange attractor on hyperspace. The lyapunov exponent is a measure of the rate at which nearby trajectories in phase space diverge. Chaotic trajectories have at least one positive lyapunov exponent. The fractal dimension appears as a metric space such as the phase space trajectory of a dynamical system. In experiment, fractal(correlation) dimensions and lyapunov exponents showed values of mean 3.837∼4.211 and 0.054∼0.078 in case of degradation material. The proposed chaotic feature extraction in this study can enhances ultrasonic pattern recognition results from degradation signals.

活性炭을 利用한 亞鉛이온의 吸着에 관한 硏究

高在能,申盛義 조선대학교 생산기술연구소 1985 生産技術硏究 Vol.7 No.2

The study on the adsorption characteristics of zinc ion on activated carbon resolved itself into the following six points concerning the effect of pH, adsorption velocity, adsorption isotherm, cations, and anions. The results are as follows; 1. The adsorbed amount of zinc ion on activated carbon increased rapidly from equilibrium pH 4 to equilibrium pH 7, and zinc ion was absorbed easily in the neutral region and NH_(4)0H alkaline medium pH 7~11. 2. Adsorption isotherm of zinc ion on activated carbon was shown the Freundlich's equation. 3. Zinc ion was easily adsorbed in the form of complex anion such as ZnI_(4)^(2-) and Zn(CN)_(4)^(2-) respectively. 4. Adsorption of zinc ion on activated carbon is improved by the addition of halide ions. The order of this improvement of halide ions is F^(-)〉Cl^(-)〉Br^(-)〉I^(-). 5. The effect upon the adsorption of zinc ion on activated carbon presented itself in the order of influencing power such as S0_(4)^(2-)〉N0_(3-)〉CI^(-). 6. Zinc ion was adsorbed preferentially in the case of coexistence of Zn^(2+) and Ni^(2+).

카오스 특징 추출에 의한 스테인레스강의 재질 열화 평가

고준빈,오상균,김기길 大田産業大學校 1998 한밭대학교 논문집 Vol.15 No.1

This study proposes the analysis method of time series ultrasonic signal using the chaotic feature extraction for degradation extent evaluation The features extracted from time series data using the chaotic time series signal analyzes quantitatively degradation extent. For this purpose, analysis objective in this study is correlation dimension, lyapunov exponent, strange attractor on hyperspace. The lyapunov exponent is a measure of the rate at which nearby trajectories in phase space diverge. Chaotic trajectories have at least one positive lyapunov exponent. The correlation dimension appears as a metric space such as the phase space trajectory of a dynamical system. In this experiment, correlation(fractal) dimensions, lyapunov exponents, energy variation showed values of 2.217~2.423, 0.097~0.154, 1.601~1.476 voltage according to degardation extent. The proposed chaotic feature extraction in this study can enhance the degree of precise evaluation of the degraded materials(SA508 CL.3).