Adamkiewicz 동맥의 폐색에 의한 척수경색 1례

이광훈,이종걸,이태연,신동익,이성현,이상수,한설희,차상훈 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

대장게실염 -18 예-

김광연,차귀현,이영희,유경수 대한대장항문학회 1986 Annals of Coloproctolgy Vol.2 No.1

수은과 N-nitrosodimethylamine 同時投與가 흰쥐胎仔에 미치는 遺傳毒性學的 硏究

裵光洙,車喆煥 고려대학교 의과대학 1991 고려대 의대 잡지 Vol.28 No.1

Co-reaction effectiveness of dimethylnitrosoamine and mercury was examined in mouse fetus to study their genotoxic effects. Mercury in the form of HgCl_2 or CH_3HgCl were given simultaneously with N-nitrosdimethylamine to mice of the 16th day of pregnancy. First part of the study examined the micronclei in polychromatic erythrocytes of fetal liver at 20hr following treatment. ln the second part of the study, Brdu(100mg /kg) was given at 24hr after treatment and DNA labelling index was determined in various fetal tissues. The results are as follows: 1. Compared to the fetal mouse liver treated only with dimethylnitrosamine,micronuclei in polychromatic erythrocytes increased about 18% when 2.50mg /kg HgCl_2 was given. when 3.20mg/kg CH_3HgCl was added, 30% increase in micronuclei was observed. 2. In the fetal tissue of lung, liver, kidney and brain, DNA labelling index by Brdu was clearly observed with simultaneous treatment with HgCl_2 or CH_3HgCl and N-dimethylnitrosamine, confirming that thsee tissues were target organs of these chemicals. InterestingIy, decrease in DNA labelling indices occurred in kidney and brain cells when mercuric compounds were added.

지역정보화의 실태와 지역주민의 정보접근 : 부산지역을 중심으로 Citizens' Availability of Databases

설광석,차성수,강상현 高麗大學校 社會學硏究會 1996 사회와문화 Vol.10 No.1

정보통신기술의 발달과 함께 그러한 기술의 보급, 이용의 정도를 나타내는 정보화는 국가간, 지역간, 조직간, 개인간의 차이를 수반하고 이다. 그 결과 국가적 수준에서 정보화의 진전에도 불구하고 각 단위 내에서 '정보수혜의 차별성'이 존재하고 있으며, 이러한 차별성은 정보화의 장애요인이 되고 있다. 특히 한국사회에서 지역간의 정보수혜의 차별성은 심각하며, 이를 반영하듯 지방자치시대의 개막과 함께 지역정보화가 급격히 추진되고 있다. 이 논문은 지역정보화가 매우 중요한 정책임에도 불구하고 그 동안 하드웨어 중심주의·공급자중심주의·중앙중심주의의 논리에 사로잡혀 왔으며, 그 결과 지역정보화 정책이 지역주민의 정보복지 별로 기여하지 못하고 있다는 것을 밝히고자 하였다. 이를 위해 국내의 지역정보화정책에 대한 문헌연구, 부산지역 통신서비스의 DB분석, 지역정보이용자에 대한 설문조사라는 세 가지 방식을 병행하였다. 이 논문은 지역정보화의 방향성을 재정립해야 한다고 결론짓고 있는데 특히 정보에 대한 권리는 생존권적 권리로 승인할 것과 '정보복지'의 틀 속에서 지역 정보화가 기술적 하부구조의 구축을 넘어설 것을 요구하고 있다.

유동전동기의 센서리스 속도제어

서영수,차광훈 명지대학교 대학원 1997 대학원논문집 Vol.1 No.-

Speed sensors are required for the vector control of induction motor. However, this sensor reduce the sturdiness the system and make many problems in operation. A sensorless controller of induction motor has several advantage: availability in a harsh environment. Therefore, a drive system without speed sensor is required. In this paper, to overcome these problems caused by the speed sensor speed estimator is using. The flux information is driving from the currents and voltage. And the speed information is driving from the currents and the estimated stator flux.

이동물체의 실시간 Segmentation을 위한 개선된 Novelty 필터의 구현

황수용,류충상,차광훈 서울産業大學校 1995 논문집 Vol.41 No.1

This paper describes a hardware implementation for real-time extraction of moving objects from the natural background. The motion of moving objects can be detected by the temporal difference image. On the basis of that information, some computer simulations and experiments were carried out. From the experimental results, it can be found that by the subtraction of successive three image and some logical operations, the moving object can effectively be extracted in real-time from the natural environment. The system is supposed to be variously applicated in the military and industrial field for the automatic control.

실시간 광 BJTC 시스템 구현을 위한 신호 흐름 제어

황수용,차광훈,김호연 서울산업대학교 산업대학원 1993 大學院論文集 Vol.2 No.-

One of the most ridiculous issue of the moving target tracking system is real-time processing of the input scene so as to extract the target features and estirmate the target states but there are no way to solve this problem sensationally in a digital algorithm. Recently an optical approach for this problem is presented; named BJTC tracker. In this paper, we propose a hardware that can the control the JTC signal for the BJTC system and show the timing chart of the hardware system to prove the design method. We use the FPGAs, low-accesstime RAM, and high performance ADC and DAC. And we use NTSC type CCDs and monitors.

크롬酸鹽 製造動勞者의 尿中 크롬量에 關한 調査硏究

韓光洙,金光鍾,車喆煥 고려대학교 의과대학 1986 고려대 의대 잡지 Vol.23 No.1

This study is aimed at investigating the correlation between the chromium concentration in urine of workers and the conditions of exposure to chromium at the factory. The study was conducted in was parts; longitudinal study and cross sectional study. The subjects of longitudinal study were 14 male workers who had been exposed to chromium without any change of their working place for five years from 1977 to 1982. During that time chromium concentrations in their urines were monitored every year. A cross sectional investigation was conducted to 71 male workers in the same factory for two months from May 1982. The investigation on concentration of chromium in the air was conducted during ten months from September 1981 to July 1982. Results of the investigation were as follows; 1. Raw-material-handling section showed highest in geometric mean concentration of chromium in the air with 0. 035mg/㎥ which was followed by sodium-chromate-manufacturing section with 0.010mg/㎥ and sodium-dichromate-producing section with 0.006mg/㎥. 2. Chromium concentration in urines from 71 workers was shown as geometric mean of 0.054mg/l in raw-material-handling workers, 0.046mg/l in sodium-chromate-manufacturing workers and 0.035mg/l in sodium-dichromate-producing workers. 3. The concentration of chromium in urine increased with duration of exposure to chromium in the factory with the moderate positive correlation coefficient (r=0.57, p<0.01). 4. According to the follow-up investigation for five years, concentration of chromium in urine from 14 chromium handling workers showed a significant increase as the period of chromium exposure increases. But it was variable in individual base. 5. The fact reveales that there is a significant correlation among the amount of chromium in urine, chromium concentration in air and duration of exposure. The regression equation was as follows; LogCr-u (ug/l) =S. S34~o&r-A(mg/㎥)+O. 118D(year) +0.905 (p<0.001) 6. Amount of chromium in urine did not revealed any significant difference amongst .age groups, symptom complaints or chest X-ray finding.

영남 방언과 호남 방언의 운율 비교 : 대화체 월의 운율을 중심으로

김차균,고광모,김주원,정원수 충남대학교 문리과대학 어문연구회 2000 語文硏究 Vol.34 No.-

In this article, we compared the prosody of Yeongnam and Honam dialect, which is tone dialect and semi-tone dialect respectively. The data is that of Changweon dialect of Gyeongnam Province and Damyang dialect of Jeonnam Province chiefly. In some case the data of Yecheon dialect of Gyeongbuk Province was also dealt. For analysis of colloquial sentences, we employed three-way analysis: First, 1062 Changweon and Damyang colloquial sentences were dealt in auditory method. Secondly, 20 sentences of two dialects and 30 words of Changweon dialect were dealt with experimental method. Thirdly, for comparison of toponymy, the tone of the station names was investigated. In this article, we analyzed sentential tone of two dialects. For that, distribution of tone pattern and reduction or weakening of tone pattern in a sentence was investigated. The descripton about tone reduction was firstly done in this study.

능력검정에 의한 우량 종봉 선발에 관한 연구

손영익,차용호,최광수 慶北大學校農業科學技術硏究所 2001 慶北大農學誌 Vol.19 No.-

The study was conducted to establish the method of performance test of honeybee queens under Korean environment. Colony performances of apis mellifera were tested based on wintering ability, colony population and honey yield in Sangju, Korea from November, 1999 ∼2000 season were averaged 22.6±2.6kg and 20.1±2.6kg, respectively, showing the decrease of 2.5 ±0.7kg. During 2000∼2001 winter season, the colony weight before wintering was 22.6±2.3kg and was decreased by 2.3± 0.6kg. The number of combs well covered with bees was 13.1± 4.6 as measured on the 22nd of May. 2000 and 16.0± 3.8 on the 21st of May. 2001, respectively. The rate of supering colonies were 50% and 98.5% in 2000 and 2001, respectively. The amount of honey production was 12.7± 8.6kg per colony in 2000, 14.2± 7.6kg per colony with unselected queens and 23.5± 4.9kg per colony with seleceted-tested queens in 2001, which were harvested two times during main nectar flow season of black locust, Robinia peseudoacasia.