긴장성 요실금에서의 경회음부 초음파술

원영철 대한영상의학회 1996 대한영상의학회지 Vol.34 No.6

Purpose : To evaluate the usefulness of introital ultrasonography in the assessment of female urinary incontinence. Materials and Methods : Introital ultrasonography was performed in fifteen patients with stress urinasy incontinence(mean age 50) and six patients without symptoms of incontinence(mean age 37). Using a sagittal section of the anterior pelvis in the plane of the symphysis pubis the posterior urethrovesical angle, the pubourethral distance and the pubo-yretgrak abgle were measured at rest and during stree(Valsalva's maneuverstate). The student T-test and the ANOVA test were used in statistical analysis. Results : The posterior urethrovesical angles of the controls were 125.3$^{\circ}$($\pm$ 10.9) at rest and 125.7$^{\circ}$($\pm$7.6) during stress. In the patients, the corresponding angles were 135.3$^{\circ}$($\pm$11.3) and 139.6$^{\circ}$($\pm$10.8). The posterior urethrovesical angles increased 0.3$^{\circ}$($\pm$4.7) in the controls and 5.6$^{\circ}$($\pm$4.0) in the patients(p=0.018). In the controls, thepubo-urethral distances were 21.8mm($\pm$ 5.8) at rest and 18.2mm($\pm$7.1) during stress, while in the patients the sedistances were 18.4mm($\pm$3.9) and 12.6mm($\pm$4.4). The pubo-urethra distance decreased 3.5mm($\pm$1.5) in the controlsand 5.8mm($\pm$2.3) in the patients(p=0.039). In the patients with mild incontinence(Gradel), the posterior urethrovesical angles increased 3.4$^{\circ}$($\pm$2.8) : 132.3$^{\circ}$($\pm$12.5) at rest and 135.6$^{\circ}$ ($\pm$12.8) during stress. In the patients with moderate incontinence(Grade II), the angles increased 8.1$^{\circ}$($\pm$3.8) : 136.0$^{\circ}$($\pm$6.5) at rest and 144.1$^{\circ}$($\pm$5.9) during stress. The change of the posterior urethrovesical angle was related to the grade of urinary incontinence in the patients(p<0.05). There was no statistical significancy in the pubo-urethral angle(p=0.315).Conclusion : Introital ultrasonography may be useful for assessment of stress urinary incontinence.

Optimal Accelerated Life-Time Plans that Minimize the Differences Between the Two Test-Stresses ( MAX, MIN )

원영철,공명복,최명호 한국경영과학회 1993 한국경영과학회 학술대회논문집 Vol.- No.1

스트레스함수가 균등분포인 가속수명시험

원영철 대한안전경영과학회 2000 대한안전경영과학회지 Vol.2 No.2

Facial Nerve Imaging

원영철 대한두경부종양학회 2007 대한두경부종양학회 학술대회 논문집 Vol.2007 No.2

Novel metallocene catalysts and their reactivities for COC

원영철,김영희,김태호,심창보,이분열,이시근,박영환,강상욱 한국고분자학회 2002 한국고분자학회 학술대회 연구논문 초록집 Vol.2002 No.10

庇護權의 主體에 關한 硏究

元永哲 청주대학교 대학원 1989 우암논총 Vol.5 No.-

A problem giving the secret protection to a political refugee is contradictory to humanism and diplomatic policy. But the protection of the goverment about a political refugee belongs to her discretion on public International law generally. That is, when we think about modern international society based on the coexistence of sovereign nation, the secret protection right is not individual right that a political refugee requests refugee place, but the right of the nation results from territorial fights of nation. Just only individual also become a main body of public international law within a limits scope. And as decribed above and I serched at each nation's the constitution and science, the secret protection right response development of human rights law on the dimention of international human rights security. And we can't dent the new intendency that it must be recognized as the right of individual dimension. As a general rule of public international law, the secret protection right is the right of some sovereign nations allow to a refugee and it has many difficult problems when we recognize it as individual right. But in fact, if the insecure position such as a political refugee or stateless person become soft. We think the individual secret protection as a human right should sure exist developing at the part of international human rights law. When things would come to this, we can prevent an abuse of ungiven the secret protection nation. And the secret protection for a political refugee also has varions meaning when we can provide inviolable protection and safe refugee security from political deprivation to a individual who request a secret protection. Therefore, according to the development of international human rights protection, I think the problem of main body about the secret protection rights for a political refugee, now, must go to the direction that the nation recognize allowance obligation.

스트레스함수가 감마분포인 가속수명시험

원영철 대한안전경영과학회 2002 대한안전경영과학회지 Vol.4 No.3

This paper presents accelerated life tests for Type I censoring data under probabilistic stresses. Probabilistic stress, S, is the random variable for stress influenced by test environments, test equipments, sampling devices and use conditions. The hazard rate, Θ is a random variable of environments and a function of probabilistic stress. In detail, it is assumed that the hazard rate is linear function of the stress, the general stress distribution is a gamma distribution and the life distribution for the given hazard rate, θ, is an exponential distribution. Maximum likelihood estimators of model parameters are obtained, and the mean life in use stress condition is estimated. A hypothetical example is given to show its applicability.

Pallidal Signal Intensities on T1-weighted MRI are Highly Observed in Advanced Liver Cirrhosis

원영철,김양호,박능화,이헌 한국환경보건학회 2012 한국환경보건학회지 Vol.38 No.5

Background: Manganese (Mn) has been found to increase the signal intensity of the globus pallidus (GP) on T1-weighted magnetic resonance images (MRI). We performed this study in order to determine the features of liver disease that correlate with pallidal signal intensities. Methods: We assessed blood Mn levels and pallidal signals in T1-weighted MRI in 49 patients with liver cirrhosis and 23 healthy controls. Results: Increased signal intensity in the GP was observed in 30 of 49 (61.2%) patients with liver cirrhosis, with the pallidal index (PI) in patients with Child-Pugh classes B and C differing significantly from the PI in controls. Multiple linear regression analysis showed that blood Mn concentrations and Child-Pugh scores in cirrhotics were significantly associated with increased PI after controlling for other confounders (p<0.05 each). Conclusions: Pallidal signals on T1-weighted MRI are mainly observed in advanced liver cirrhosis. The present study suggests that advanced liver cirrhosis may be a human model for manganism.

신경망을 이용한 혼류조립순서 결정

원영철,고재문 대한산업공학회 1997 산업공학 Vol.10 No.2

海洋環境保護와 地域條約

元永哲 청주대학교 대학원 1993 우암논총 Vol.10 No.-

In this paper I studied the problem of pollution which becomes serious day by day, in particular, the protection of marine environment which Is called as mankind's last resource treasure. By the way, preservation of marine environment can't gain it's outcome by means of one country's effort alone, furthermore, the goal can be gained only when the whole world as well as whole region work Jointly Therefore, in this paper, the basic ideas are as follows ; I examined in priority the regional treaties for protection of marine environment% and the problem of the regional cooperation for marine pollution prevention in the ocean zone surrounding the Korean Peninsula, in order to urge the nations concerned to be interested in it, and to provide the materials for the conclusion of treaty. To that end, in Chapter Ⅱ, Ⅰ outlined the present conditions of the general marine po1lution. And I surveyed the usefulness of the regional cooperation the for protection of marine environment. In the Chapter Ⅲ, Ⅰ examined the Paris Convention established in 1974, from the viewpoint that 70% of the marine pollution are land - based sources. Also I studied the treaty-making process and main content of the Baltic Convention established as regional treaty first and revised Baltic Convention In 1992, considering the geographical similarity with us. The treaty-making process and main content of the Mediterranean Sea Convention In 1976 were also studied Korea(ROK), China, and Japan depend upon the Yellow and East China Seas for 80∼90%, 70%, and 15% of their coastal fisheries, respectively. The risk of marine pollution In the ocean was increased due to Korea's west coast development, China's establishment of coast industrial complex, and North Korea's seabed oil exploration. In case of East Sea, the risk is also high due to Russia's industrialization of Vladivoqtok and Khabarovsk, North Korea's development of Chongjin and Hamheung, and the dumping of nuclear wastes by Russia and Japan Therefore, coordinated effort and consultation among nations concerned in this legion is urgent Therefore, In conclusion(Chapter Ⅳ), the government and non government efforts to promote the notion that Northeast Asia is one environmental community should not be spared Secondly, in order to save Korean coast from pollution, a Joint investigation group which is composed of North South Korea, Japan, China and Russia should be formed to conduct scientific investigation on the geographical condition and the present condition of the marine pollution Thirdly, we will regulate all the pollution acts on the basis of this investigation, and conclude immediately convention defining compensation for damages relation in case of happening the damages and penal regulations for violation Thirdly, new convention regulating all pollution activities, punishment of violation, and the responsibility for the compensation of damage