일본 위성방송의 시청에 따른 문화적 영향

양기석 東亞大學校 大學院 1994 大學院論文集 Vol.19 No.-

This paper attempts to evaluate the cultural imperialism thesis that exposure to Japanese DBS TV among Korean viewers is instrumental in introducing "low-taste" Japanese popular culture in Korea. The main argument of the thesis is that the broadcast spillover undermines Korean cultural sovreignty by introducing "pornographic, violent, and low-taste materials" to Korean homes without any prior screening, that it has become a vehicle of advertising messages for Japanese products and services, and that it diffuses Japanese value systems and life styles among Koreans, especially teenagers. To assess these questions the investigator conducted a content analysis of TV programs of NHK's two DBS channels (7 and 11). This part deals with the question : what kinds of materials are made available to Korean viewers ? The investigator then conducted a sample survey of DBS viewers : what kinds of programs do they mostly pay arrention to. It has been found that NHK's programming quality is relatively "high-culture," that the most favored contents are international news(Chan 7), sports(Channel 7) and movies(Channel 11), that the primary motive for watching Japanese TV is to learn Japanese, acquire more international news, and enjoy sports and movie programs. Thus, the cultural imperialism argument seems to be weak in speculating about the impact of Japanese DBS on Korean culture. The author suggests that these new media, in fact, function as a "window" for more international news, as a "stadium" for worldwide sports games, and as a "theater" for a wide variety of movies. The lack of corresponding programming materials in Korea now is what drives these viewers to turn to Japanese DBS. The author concludes that, despite some possible negative implications (i.e., participation by advertisng-based, non-scrambled, commerical TV in the future), the NHK DBS serves as a supplementary programming source for the Korean audience.

ZnO 압전박막을 이용한 FET형 압력센서의 특성

양규석,권대혁,남기홍,손병기 경북대학교 센서기술연구소 1994 센서技術學術大會論文集 Vol.5 No.1

A new FET type pressure sensor has been investigated to overcome the problems of the conventional silicon piezoresistive and capacitive pressure sensor. The PSFET( pressure sensitive field effect transistor) is a new FET type pressure sensor which the operation theory is combined with the field effect of MOSFET and the piezoelectric effect of piezoelectric thin films. This sensor can overcome the fabrication problems of conventional silicon pressure sensors and realize productivity, standardization, miniaturization, integration because the whole fab. process is compatible to the planar technology. A ZnO thin film as a piezoelectric material, 5000Å thick, was deposited on a FET gate by RF magnetron sputtering and the optimum deposition condition was 300℃ substrate temperature, 5mtorr working pressure, Ar ambient and 140watt RF power, respectively. And the device was annealed at 400℃, O_(2) ambient for 1 hour to obtain a better C-axis poling structure. The fabricated PSFET device showed piezoelectric voltage(40mV/kgf/cd) and sensitivity (21μA/kgf/cm^(2)) according to an applied pressure(1kgf/cm^(2)~4kgf/cm^(2)).

관절염 환자의 실태와 관련요인에 대한 분석적 연구

정승기,남철현,신두만,양숙희,김기열,이미경,문기내 대한보건협회 2002 대한보건연구 Vol.28 No.3

This study was conducted to examine the condition of patients with arthritis and its related factors. Data were collected from 100 people who suffered from arthritis in Seoul. Busan, Daegu, Daejun, Junjoo, and pohang from April 2, 2000 to July 31, 2000. The results of this study are summarized as follows : 1. 6L0% of the subjects were female. The incidence rate of arthritis was higher in the higher age group, lower educated group, and thinner group. In case of male, the incidence rate was higher in the groups of single, residents in big cities, and technicians. In case of female, it was higher in the groups of the married, residents in towns or villages, and housewives. 2. According to the parts of arthritis, knee joint covered 67.4% and backspine joint covered 9.0%. The incidence rate of arthritis was higher in the groups of forties, housewives, single, irreligious people, residents in towns and villages, primary school graduates, thin people, and walk exercisers. 3. The arthritis patients felt pain most when they stood up (31.5%). According to the time when they felt pain most, the time when they were active during daytime was 31.5% and nighttime was 29.8%. When they got up in the morning was 22.4%, while 10.9% felt pain all cay long. 4. they had arthralgia knees and cramp in crook of the knees (21.8%). Their knees ticked when they moved (21.1%). The had to rest hands on anyplace when they stood up (18.7%) and they could not completely unfold their knees. 5. The medical institutions which diagnosed them showed significant difference in the variables of sex, age, marital status, religion, place in residence, education level, economic status, obesity level, exercise, parts of arthritis, and posture of feeling pain. from above results, it can be concluded that it is necessary to develop appropriate medical treatment on the basis of the respondents' socio-democraphic characteristics, pain parts, period of having a pain, satisfaction level with treatment and its related factors. Therefore, related professionals and organizations must develop education program for prevention of arthritis in order to educate them.

엔지오텐신이 Norepinephrine의 신혈관 반응에 미치는 영향

이석호,김종규,양훈모,민영기,임한혁 순천향의학연구소 1999 Journal of Soonchunhyang Medical Science Vol.5 No.2

To determine the effect of angiotensin Ⅱ(ANG Ⅱ)-induced hypertension on the renal hemodynamic response of norepinephrine(NE), mongrel dog instrumented for checking of renal blood flow(RBF) was followed as the step increases every 2 minutes in the rate of norepinephrine infusion into the renal artery during 5 conditions (C : control, C+PD : control+pressure decompression of aorta, ACEI : angiotensin converting enzyme inhibitor, ACEI+ANG Ⅱ : angiotensin converting enzyme inhibitor+ANG Ⅱ, ACEI+ANG Ⅱ+PD : angiotensin converting enzyme inhibitor+ANG Ⅱ+pressure decompression of aorta) Without relation of increase (C, C+PD) or decrease (ACEI+ANG Ⅱ, ACEI+ANG Ⅱ+PD) of the plasma ANG Ⅱ level when NE is infused into vessel, there were no differences in RBF response to NE infusion between C and C+PD and between ACEI+ANG Ⅱ and ACEI+ANG Ⅱ+PD, which implies that renal arterial pressure(RAP) does not play an important role in controling the renal hemodynamic response to NE. When renin angiotensin system was blocked by captopril without adding to ANG Ⅱ supply (ACEI), RBF can be severe decreased to approximately 90% at much lower rates of NE infusion than occurred when the sufficient concentration of ANG Ⅱ were present in the plasma. As the increased sensitivity of NE did not occur at lower renal arterial pressure, when ANGⅡ was present in the plasma in sufficient concentrations, it seems that protective effect on renal function is possible by ANGⅡ during renal sympathetic stimulation.

출혈성 소화성 궤양의 장기 재발률

심기남,정훈용,양석균,홍원선,박의련,박무인,김해련,민영일 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.2

Background/Aims: Bleeding from a peptic ulcer is one of the common and serious complications associated with the rate of reported mortality, which ranges from 5% to 10%. Endoscopic therapy is effective in controlling active bleeding and reducing the emer-gency surgery, the immediate mortality rate and the incidence of early rebleeding. But few recent studies have documented the long-term recurrent bleeding rate after discharge in patients with bleeding peptic ulcers. The aim of this study was to determine the long-term recurrent bleeding rate and factors predisposing to recurrent bleeding. Methods: Eighty-eight patients with bleeding peptic ulcers discharged after medical treatment between Dec. 1990 and Jul. 1992 were included in this study and retrospectively followed up with medical records and telephone interviews. The end point of follow-up was recur-rent hemorrhage, surgery for treatment of ulcer complication, or death. Results: By July 1997, retrospective follow-up was available in 76 patients. Recurrent bleeding occurred in 23 patients (30.3%) with bleeding peptic ulcers and the median follow-up period was 69 months (range, 1 ∼79 months). The estimated cumulative recurrent bleeding rate after 1, 2, 3, 4, 5 and 6 years was 11.8%, 14.5%, 19.9%, 24.2%, 27.2% and 34.2%, respectively. There was no difference between the recurrent bleeding group and the non-recurrent bleed-ing group according to age, sex, prior NSAIDs use, previous history of bleeding or pepticulcer, site of ulcer, stigmata of recent hemorrhage at initial examination, method of treatment and amount of transfusion. Conclusion: Recurrent bleeding occurred in one-third of patients with bleeding peptic ulcers after 6 years of follow-up and one-third of recurrent bleeders rebled within 1 year. The factors predisposing to recurrent bleeding in the long-term follow-up could not be found. Therefore, further studies designed to identify factors predisposing to recurrent bleeding are needed and the evaluation of Helicobacter pylori status in bleeding pepic ulcer is needed because Helicobacter pylori is an important factor of peptic ulcer recurrence.

Kainic acid 를 사용한 소뇌피질 단소엽의 손상이 고전적 순막조건화에 미치는 효과

문양호,김기석 한국심리학회 1989 한국심리학회지 생물 및 생리 Vol.1 No.1

본 연구는 소뇌피질 단소엽의 손상이 고전적 순막조건화에 미치는 영향을 검증하기 위한 것이다. 소뇌피질 단소엽이 순막조건화에 필수적인 신경 구조물인가를 확인하고, 또한 순막조건화와 관련된 필수적인 기억흔적이 형성되는 신경가소성이 일어나는 부위인가를 규명하고자 하였다. 이를 위하여 토끼를 대상으로 순막조건화를 실시한 후 소뇌피질 단소엽을 파괴하였으며, 이어서 이전에 확립된 조건반응의 파지 및 재학습 여부, 그리고 전이효과를 검사하였다. 소뇌피질 단소엽의 손상은 신경섬유의 역행성 변성으로 인한 문제를 해결하고자 세포체만을 선택적으로 손상시키는 Kainic acid을 미세주입하였다. 실험결과, 소뇌피질 단소엽이 완전히 손상된 집단은 손상전에 확립된 순막 조건반응의 파지 및 재학습이 불가능하였으나 무조건반응은 영향받지 않았다. 한편, 단소엽이 아닌 다른 소엽에 동일한 양의 Kainic acid에 의한 손상을 받은 통제집단은 이전에 확립된 조건반응이 존속되었다. 이와같은 본 연구의 결과는 소뇌피질 단소엽이 순막조건화에 결정적인 신경구조물임을 밝힌 이전의 연구결과들과 일치하며, 조건화 동안에 기억흔적과 관련된 신경가소성이 소뇌피질 단소엽에서 일어난다는 가설을 지지한다. The present experiment purports to examine effects of the cerebellar cortical simple lobule(HVI) on the classical conditioning of rabbit's nictitating membrane responses(NMR). The study examined whether the lobule HVI is an essential structure for NMR conditioning and whether it is the localized site where the critical memory trace related to classical NMR conditioning is formed. Many of the previous studies which explored the function of the lobule HVI in the MNR neural circuit have employed aspiration lesion techniques. But the aspiration may also damage inferior olive, pontine nuclus and deep cerebellar nucleus by retrograde degenerations of neural fibers as well as the simple lobule. In this study, kainic acid was micro-injected into the lobule HVI in order to overcome such porblems because the kainic acid destroys selectively the cell bodies and leave the fibers intact. Subjects were 16 rabbits. All animals were trained using standard procedures for NMR conditioning. The conditioning involves a tone(1㎑, 85㏈ SPL, 350㎳) as the conditioned stimulus(CS) with a coterminating periorbital electric shock(3㎃, 100㎳) delivered at the right eye as the unconditioned stimulus(US). Following the conditioning, the simple lobule of the right side cerebellum was lesioned. After recovery, animals received 5 days training on the right side to test for retention and reacquisition of conditioned responses. Then, animals received an additional session in which training was switched to the left side. Results show that complete lesions of the lobule HVI abolished previously established conditioning and prevented subsequent reacqusition, while unconditioned responses to US were intact. Lesions of the other cerebellar lobules did not impair the conditioning. The results suggested that the simple lobule is an essential part for classical NMR conditioning and that neural plasticity related to memory trace during the conditioning occurs in the simple lobule rather than in the dentate-interpositus nucleus.

enalapril의 혈압하강효과에 대한 renomedullary depressor system의 역할

민영기,양훈모,김종규,이석호 순천향의학연구소;Soonchunhyang Medical Research Institute 2000 Journal of Soonchunhyang Medical Science Vol.6 No.1

It has long been recognised that renin-angiotensin system(RAS) takes part in blood pressure control. It was previously known that the physiological effects of the renomedullary depressor mechanism are in virtually all aspects the very opposite of those of RAS. Muirhead proposed that there was a negative-feedback interaction between two systems, RAS and renomedullary antihypertensive depressor system, and they balance each other. If true, as the suppression of angiotensin Ⅱ(ANG Ⅱ)by angiotensin converting enzyme(ACE) inhibitor activates the renomedullary antihypertensive function, we can assume the blood pressure lowering effects of ACE inhibitor due to an increased secretion of medullary depressor substance. After rats with intact and chemically destroyed renal medulla received either saline or the ACE inhibitor, mean arterial pressure(MAP) was clearly decreased after ACE inhibitor administration in controls with intact medulla, but MAP in rats with chemically destroyed renal medullar was not changed. According to these results, we can come to a conclusion that renomedullary depressor substance plays an important role to normal blood pressure control.

요관압 상승시 신혈류량 조절에 prostaglandin이 미치는 효과

민영기,양훈모,김종규,이석호 순천향의학연구소 2001 Journal of Soonchunhyang Medical Science Vol.7 No.1

Higher ureteral pressure than in normal condition causes increase in renal blood flow (RBF) and partial impairment of the autoregulation of RBF. Higher ureteral pressure increased renal prostaglandin production, it is not clear whether or not it is also responsible for partial impairment of the autoregulation of RBF. Therefore, we investigated the role which prostaglandin play in the autoregulation of RBF, studying the interaction between ureteral pressure and RBF autoregulation may reveal the role of prostaglandin in tubuloglomerular feedback. For the purpose of this experiment, six anesthetized mongrel dogs were prepared for the measurements of RBF, mean systemic and renal arterial pressure (RAP) and the manipulation of ureteral pressure to 0 cmH20, 20 cmH20 and 40 cmH20. The autoregulation curves were determined during both control and elevation of the ureteral pressure, before and after the pretreatment with indomethacin, a cyclooxygenase inhibitor. The desired ureteral pressure was achieved by vertically elevating the water-filled reservoir connected to the ureteral catheter to 20 cm and 40 cm above the kidney level. In response to the elevation of the ureteral pressure, RBF increased from 167±11 ml/min to 185±8 ml/min, 204±11 ml/min respectively and the renal arterial pressure and the systemic arterial pressure didn't change significantly. During 0 mmHg of ureteral presure threshold pressure of RBF autoregulation was 59±3 mmHg. On the other hand, during 20 cmH20, 40 cmH20 of ureteral pressure, the autoregulation curves shifted upward and rightward from control, threshold pressure is elevated by 74±3 mmHg. The pretreatment of the dogs with indomethacin failed to affect the lower limit of RBF autoregulation during both control (63±5 mmHg) and the elevated ureteral pressure (77±5 mmHg). Since RBF failed to increase in response to the elevated ureteral pressure, RBF autoregulation curves obtained during the elevated ureteral pressure shifted only rightward from indomethacin control. The results indicate that the increased intrarenal level of prostaglandin by increased ureteral pressure or prostaglandin-induced vasodilation does not appear to bear any relation to the reduction in the autoregulatore capacity during elevated ureteral pressure. It seems that the partial impairment of the autoregulation during acute ureteral obstruction is due to the consumption of tubuloglomerular feedback mechanism at 0 mmHg of ureteral pressure and that prostaglandin is neither mediator nor effector of tubuloglomerular feedback mechanism.

본딩 웨이퍼 검사를 위한 모델링 연구

임영환,양시은,장동영,안효석,홍석기 한국공작기계학회 2008 한국공작기계학회 춘계학술대회논문집 Vol.2008 No.-

본 논문에서는 레이저 빔 투과를 이용한 본딩 웨이퍼 검사 방법을 제안하고 검사 장치를 설계 구현하였다. 1064nm파장에서의 정상웨이퍼를 일정한 비율로 투과하였다. 본딩 불량으로 인한 웨이퍼의 기공은 두께에 따라 투과율이 현저하게 변화하여 기공 부분을 검출하였다. 이러한 기공은 두께의 변화가 있으며 광량의 변화하는 부분이 에어갭으로 인식 카메라로 쉽게 구분이 가능하였다.

소의 심장 cytochrome c oxidase의 전자전달 특성

李相稷,呂基淑,李在亮,郭天錫,尙瑛錫 嶺南大學校附設 基礎科學硏究所 1988 基礎科學硏究 Vol.8 No.-

Cytochrome c oxidase (complex Ⅳ) was isolated from bovine heart mitochondrion. The spectra of isolated cytochrome c oxidase which was considered to be oxidized showed absorption bands at 598nm and 421nm in the oxidized form and at 604nm and 443nm in the reduced form. The activity of cytochrome c oxidase measured by the redox system of ferrocytochrome c-oxygen was not affected by NH₄OH and ethylenediamine. It was, however, found that 2-mercaptoethanol and potassium cyanide inhibited its reactivity respectively.