서울의 Penicillinase Producing Neisseria gonorrhoeae 발생빈도(1998)

김재홍,김준호,반재용,이정우,황성주,정준규,정성태,강진문,조흔정,홍창의,정혜신,이한승,김이선,이봉길,이종호,선영우,한기덕,윤성필,이성훈,안종성,박석범,문승현,조항래,김형섭,류지호,황재영,박준홍,손상욱 한양대학교 의과대학 2001 한양의대 학술지 Vol.21 No.1

In recent years, gonorrhea has been pandemic and remains one of the most common STDs in the world, especially in developing countries. For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria gonorrhoeae(PPNG), we have been trying to study the patients who have visited the Venereal Disease Clinic of Choong-Ku Public Health Center in Seoul since 1980 by menas of the chromogenic cephalosporin method. In 1998, 93 strians of N. genorrhoeae were isolated, among which 60(64.5%) were PPNG. The prevalence of PPNG in Seoul, which had been decreased to 39% in 1996 after a peak of 74.3% in 1993, is increased to 64.5% in 1998.

크롬(Ⅵ)의 체내 흡수와 소실속도에 관한 연구

김현영,이성배,임철홍,이권섭,정용현,이종성,한정희,전윤석,황호순,이용묵 한국산업위생학회 2003 한국산업보건학회지 Vol.13 No.1

The CrO3 mostly used in plating. metal surface disposal, leather, cosmetic manufacturing, as an experiment material by repeatedly inhaling and exposure the male S.D. rats at a 0.00, 0.2., 0.50, 1.25 mg/㎡ concentration(particle size: 0.5-0.5 aerosol)6hours a day, 5day a week in 13weeks comparing with 2weeks, 8weeks of recovery group about the noxiousness of the experiment animal and the reduce scale of the CrO3 in the internal organ especially in blook and respiratory organ with the period of convalescent and clearance. The experiment results which we received are as follows. 1. In blood the RBC, HGB and HCT experiment, rats with 0.20, 0.50 mg/㎡ concentration showed that there were some decreases but not dependent. The kidneys absolute weight compared with control group was reduced intentionally(p〈0.05) and the lungs absolute weight compared with control group showed intentional increase(p〉0.05). 2. After the exposure of the experiment material, the whole blook, l\blood plasma and red blood cell in blood by (x): the period of convalescent, per (y); the decreasing of Cr concentration, was y=66.51 e -0.057x, y=67.2 e-0.101x, y=70.01 e-0.030 in 0.50 mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life (day)was estimated 12.0, 6086, 23.0 each. 3, After the exposure of the experiment material, the experiment animals lung, liver and kidneys by(x); the period of convalescent, per (y); the decreasing of Cr conentration, was y=1808 e-0.00493x, y=12.02e-0.0297x, y=67.61 e-0.0292x in 0.50mg/㎡ exposure concentration by calculating the clearance coefficient of correlation, and the half life(day)was estimated 140.6, 23.3, 23.7, each, and including lung, liver with all of the experiment internal organs, the Cr clearance decreased as the exposure concentration increased.

K 대학병원 서어비스에 대한 소비자 만족도

이태섭,박종원,이무식,윤능기,이충원,서석권 啓明大學校 醫科大學 1993 계명의대학술지 Vol.12 No.3

Authors administered a questionnaire to 300 clients visited to the K University Hospital during August in 1992 to investigate the degree and related factors of consumer's satisfaction with the hospital services. Clients consisted of 82 in-patients and 158 out-patients, 52.4 percent of them was male. Four dimensions of satisfaction were assessed which were medical management, administration, environment and attitude. In-patients reported as dissatisfied with the waiting time during receipt, investigative medical procedures and pharmacy (64.7%), lack of conveniency facilities for patients and their guardians(48.8%) and provision of conveniency facilities in the ward(42.4%), unsanitary state of out- and in-hospital(41.5%). Out-patients reported dissatisfaction with the course of medical management and the time needed(70.3%), the waiting time during receipt, investigative medical procedures and pharmacy(68.3%), lack of conveniency facilities for patients and guardians(42.4%). But both in-patients and out-patients were satisfied with medical equipments, doctor's diagnosis reliability and medical effects, technician's attitude more than 50%. Canonical correlation analysis was done to find related sociodemographic factors to the four dimensions of satisfaction. Of the four canonical functions, the first was only statistically significant in in-patients. Its eigen value was 0.56 and its canonical correlation coefficient was 0.60. Satisfaction with environment and medical management was selected as important concept in dependent variables. Standardized canonical function of environment and medical management were 0.76 and 0.35 respectively. It was related with woman with high educational attainment and increasing number of hospital visits. In out-patients, the first, second and third function were statistically significant and their eigen values were 0.18, 0.4, 0.08 respectively which were small compared to those of in-patients. Their canonical correlation coefficient were 0.40, 0.35, 0.28 respectively. Low degree of environment but high degree of medical management satisfaction was noted in the first function which was related with old age, woman and professional occupation. Low degree of satisfaction with administration(second function) was related with city resident, non-professional occupation and young age. High degree of medical management but low degree of administration satisfaction(third function) was related with surgical visitor, man and non-professional occupation. The direction of hospital managerial strategies could be planned and general characteristics of dissatisfactory clients might be suggested with these results.

탄소섬유와 석면을 보강한 시멘트 복합재료의 압축, 인장 및 휨 강도에 관한연구

이환홍,박종서,김광섭,노재성 忠南大學校 産業技術硏究所 1990 산업기술연구논문집 Vol.5 No.1

This study was carried out to examine the reducing ability of asbestos quantity added in asbestos reinforced cement composite(ARC). The using amount of asbestos is subject to restriction from 10-20 vol% to 5-10 vol%,because it is very harmful cancerogenic substance. Asbestos was replaced by pitch based isotropic carbon fiber, and then the mechanical properties, compressive, tensile and flexural strengths were tested as a function of mixing proportions. The results are as follows 1) The compressive strength of carbon fiber and asbestos reinforced cement composite(CFARC) was greater than ARC by superplasticizer, reducingW/C ratio to 20 percent. 2) The tensile strength of CFARC was showed increasing trend up to 52% compared to ARC at 5% carbon fiber volume fraction. 3) The flexural strength of CFARC was showed increasing trend up to 17% cowpared to ARC at 5% carbon fiber volume fraction.

중심 정맥 삽관법에 의한 동정맥루: 증례 및 문헌 고찰

이 근,원형섭,양기창,박철완,김상일,정호성,이종호 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1

A 36-year old woman with end stage renal failure and hypertension was transferred from a university hospital to our emergency department due to a enlarging right cervical mass associated with a palpable thrill and a bruit. Over a 2 month period, she required hemodialysis for severe azotemia at a university hospital in Seoul. 3 days after a difficult attempt at a internal jugular cannulation, she developed a progressive swelling in the right lower cervical area. An arch and primary branch arteriogram revealed a arteriovenous fistula between right innominate artery and internal jugular vein with a large intervening pseudoaneurysm. She underwent vascular surgery within 1 week of injury and subsequent postoperative angiogram showed complete resolution of the fistula. This rare condition is reported with a review of the literature.

ISDN 가입자망 접속시스템에서 NT-RABX의 제안 및 구현

이종희,이갑섭,김진호 新羅大學校 1991 論文集 Vol.31 No.1

This paper proposes a modified ISDN NT(Network Termination) architecture which has wider exchange service area and shorter average turnaround time for larger number fo subscribers per NT than that of the CCITT recommendation. We designed and implemented a test NT-PABX for the feasibility of the proposed NT architecture and it is concluded that the proposed NT architecture has the merits in the number of subscribers per trunk line and in the wider service area and smaller average turnaround time for private exchange, and we confirmed the feasibilityof the proposed architecture.

병렬처리시스템을 이용한 최적화 신경회로망 고속 Accelerator 구현

이종희,김진호,이갑섭,조우현 新羅大學校 1992 論文集 Vol.33 No.1

We proposed a high speed parallel implementation of an optimization neural network accelerator with linear increase of speedup by using multicomputer system and presented performance analysis model of the system We extracted the temporal and the spatial parallelism from the optimization neural network and constructed a parallel pipeline processing model using the parallelism from the optimization neural network and constructed a parallel pipeline processing model using the parallelism so as achieve the maximum speedup and efficiency on the CSP architecture. The results of the experiments for the TSP using the Transputer system, show that the proposed system gives linear increase of speedup proportional to the size of the optimization neural network for more than 140 neurons, and we can have more than 98% of efficiency up to 16-node system.

우수 Boxing 선수의 시지각력 특성에 관한 연구

이충섭,이종각,김창범 忠北大學校 平生體育硏究所 1998 平生體育硏究所 論文集 Vol.10 No.-

The purpose of this study is to define each concepts of each factors of the visual perceptivity in order to figure out the features of superior boxers' visual perceptivity andto find out how different the visual perceptiveity fo the each individual subject can be and how the skill level can vary through experiments. Through the above-described procedure the results as follows were obtained. As to the functional level, the dynamic visual acuity of the superior athletes group was found to be higher than that of the inferior athletes group. The eye slight of superior high school and university athletes was 1.27, that of the inferior high school athletes was 0.85, and that of inferior university athletes was 0.86. In the aspect of experimental subject, no noticeable difference was found. As to the 4 selective reactiontime, related to functionevel, the average of superior athletes group was404.16 msec and that of inferior athletes group was 438.47 msec. So it can be conclued tha the reaction time of superior athletes group was faster thanthat of inferior athletes group. As to the 4 selective movement time, related to the skill level, the average of superior athletes group was 130.98 msec and that of inferior athletes group was 144.01 msec. So, it is reasonalbe to think that the reaction time of superior athletes group was faster than that of inferior athletes group. As to the depth perception, realted to the skill level, the average of superior athletes group was 0.45 cm and that of inferior athletes group ws 0.90 cm. So it can be concluded that superior athletes group was more precise than inferior athletes group. Also, the skill level and experimental subject were found to have interaction and they showed a significant difference. As to the depth perception, the perceptability of each subject of superior athletes group and that of inferior athletes group was different and related to the skill level, the perceptability of university athletes group and that of high school athletes group were different. After statistic analysis, the visual perceptability of high school athletes group and university athletes group of superior athletes group showed a noticeable difference. But in case of inferior athletes group , therewas no difference between the visual perceptability of high school athletes group and that of university athletes group. So, it can be concluded that the effect of the visual perceptability of high school athletes group and that of university athletes group related to the functional level of each subject. As to the visual timing prediction, related to the skill level of each subject, the average of superior athletes group was 0.08 sec and that of inferior athletes group was 0.12 sec. The superior athletes group showed better grades than inferior athletes group. However, related to the experimental subject, there was not any difference found. As to the dominant eye, there was 14 Contrastrals and 7 Unilaterals among the superior high school and university athletes group. So, there are more Contrastrals than Unilaterals in teh superior high school and university athletes group.

다공질 실리콘 산화법을 이용한 SOI 소자의 제조

李鍾玄,曺贊燮,梁天淳 慶北大學校 1991 論文集 Vol.51 No.-

Porous silicon layer (PSL) was fabricated by anodic reaction of n^+ layer of n^+/n silicon structures. The dependence of HF concentration, applied bias and reaction time on the porosity of PSL were investigated. A FIPOS-SOI which has 100 win width and 3 ㎛ thickness was fabricated using n/n^+/n silicon structures. MOSFET devices were fabricated on silicon islands. The breakdown field intensities of buried insulator in SOI structures were distributed between 0.6-2.0 MV/㎝. The threshold voltage, transconductance. and hole mobility of p-MOSFET/SOI with W/L ratio 60/15 were -4.2 V. 4.02× 10 exp (-6) Ω^-1 and 145 ㎠/V·sec. respectively. Subthreshold slope and leakage current were 150 mV/decade and 0.2 nA. Silicon microstructures were achieved for the application to sensors using FIPOS technology. PSL was formed in n^+ silicon layer of n/n^+/n structures and was etched off in 5 wt% NaOH solution. The microstructures were 50 ㎛ wide, 100 - 500 ㎛ long, and 4 ㎛ thick micro pans for cantilever and bridge. SEM photographs were shown for each part.

흙의 파괴시 체적변화 효과

정진섭,권영언,김찬기,이종천 圓光大學校 1993 論文集 Vol.27 No.2

본 연구는 흙이 파괴할 때 전단에 의하여 발생 하는 채적변화에 의한 응력을 보정하는 세개의 방정식을 유도하여 문헌상에서 얻은 시험결과에 적응하여 본 결과 Bishop의 에너지를 고려한 보정방법이 가장 합리적인 것으로 생각되어 Bishop의 방법을 선택하여, 흙이 항복 및 파괴 할 때에 채적변화에 대한 응력보정의 효과를 Poorooshasb모델과 Lade모델에서 검토하였다. 그 결과 전단할 때 채적변화에 대한 응력보정은 흙의 파괴상태를 합리적으로 나타내지 못한다는 사실을 알았다. The effect of volume change at failure and equations worked out to aollow for their contribution to the stresses. Two models for the failure and yield of soil are discussed in this paper and the effects of the corrections are considered in these models. The corrections for volume change do not produce a reasonable change in the stresses. They do not make the task of modeling the soil any simpler, and so not nessecery for consideration. The best method developed so far, describing the failure of the soil is Lade`s model. It describes the failure of the soil very well without volume correction. In fact when volume corrections are applied, the model no longer describes the failure. Poorooshasb`s model, though base on much consideration does not describe the true failure of the soil.