정부규제개혁을 위한 본질적 개혁대안에 관한 연구

김용우 한국정책과학학회 1999 한국정책과학학회보 Vol.3 No.1

內分泌效果를 隨伴한 惡性 Brenner氏 腫瘍의 1症例

金容佑,洪性善,洪淳博,金湘辰,최인준 中央醫學社 1968 中央醫學 Vol.14 No.2

Malignant Brenner tumor, admittedly of rare occurrence, has been sporadically reported since Dockerty's first report in 1944. Following Meyer's classification in 1932, Brenner tumor had been generally considered to be benign, and hormonally inactive, which has been supported by many authors. But through the sporadic reports and case analysis in the literatures, some of Brenner tumor were associated with uterine bleeding, active proliferative and hyperplastic endometrium or endometrial carcinoma, which hay been under discussion probably on the estrogenic activity that was first suggested by Te. Linde in 1930. A case of malignant Brenner tumor associated with interesting evidence of hormonal effect in a postmenopausal woman, 63 year old, gravida 10, para 8, Korean woman, is reported, because of its rarity in its malignancy and controversial aspect of hormonal activity. The patient complained of a gradually growing abdominal mass for 21 months and irregular uterine bleeding for 2 years since transient 3 months cessation of probable menstrual history at her age of 60 years. Total abdominal hysterectomy, bilateral salpingo-oophorectomy and partial omentectomy were performed under the diagnosis of a suspicious malignant ovarian tumor. On operation, a huge right ovarian tumor was found, which was 40 X 40 X 30cm. in size, 5,400gm. in weight and contained about 3, 500cc. of yellow milky thick fluid. Tile tumor was adherent to the lower part of greater omentum and parietal peritoneum. The uterus and left adnexa were not adherent to the surrounding tissues or organs. Grossly, the tumor was unilocular, mostly cystic and partly solid. The outer surface of the tumor was relatively smooth but nodulated. The inner surface of the tumor showed trabeculations and necrosis, forming multiple, large friable polypoid or papillary protruding masses, which were firm and gray white on their cut sections. The cystic wall was variable in thickness from 0. 5 to 3.5cm., very firm, and yellow-tinged gray white on cut sections. The uterus measured 9X6X5cm. and the thickness of myometrium was 2.0cm. and the endometrium appeared to be thicker than usual. Histologically, the tumor was composed of typical epithelial cell nests of Brenner tumor surrounded by proliferative neoplastic stromal tissue, particularly in the sections of cystic wall, but polypoid tumor masses were mostly composed of benign appearing transitional type of epithelium forming papillary structures. On several areas, the tumor cells showed malignant nature with mitotic figures. These tumor cells were also found in the serosal lining of the uterus and left ovarian surface, and in the omentum. Several special stainings were done, such as van Gieson, Trichrome, Aniline blue, P. A. S., Reticulum and Fat stains. Lipid droplets were abundantly found particularly around the -Brenner's epithelial nests and also occasionally in the papillary transitional formed tumor cells. The uterus showed mild hypertrophy of myometrium, adenomyosis, active hyperplasia of. endometrium, functioning endocervical glands and chronic cervicitis. The epithelium of endosalpinges was same as that under the effect of estrogenic activity. With these histological findings and uterine bleeding in a postmenopausal woman in accordance with abundant lipid droplets in the tumor, possible hormonal activity of this malignant Brenner tumor, not solely due to active stromal response by the tumor but the tumor itself, may not completely be excluded.

중국 만주지역 S파 상대주시 토모그래피

김용우,김효지,임정아,장성준,Kim, Yong-Woo,Kim, Hyo-Ji,Lim, Jung-A,Chang, Sung-Joon 한국지구물리물리탐사학회 2018 지구물리와 물리탐사 Vol.21 No.1

중국 만주지역은 백두산이라는 거대한 화산이 존재하는 지질학적, 지구물리학적으로 중요한 곳이다. 백두산은 전 세계에서 규모가 가장 큰 화산 중 하나이며, 최근 분화 조짐이 보이면서 사람들의 관심이 집중되어 있다. 본 연구는 중국 만주지역의 하부 깊이 약 100 ~ 600 km 사이의 속도구조를 파악하기 위해 S파 상대주시 토모그래피를 수행하였다. 연구에는 IRIS (Incorporated Research Institutions for Seismology)에서 제공하는 Necess Array (North East China Extended SeiSmic Array)에 기록된 2009 ~ 2011년 기간 동안 진앙거리 $30^{\circ}$ 이상 $90^{\circ}$ 미만의 지진 자료를 사용하였다. 획득한 자료들에 다중채널 상호상관법(multi-channel cross-correlation method)을 적용함으로써 상대주시를 계산하였다. 그 결과 중국 만주 지역에 분포하는 화산지대와 토모그래피 이미지에서 나타나는 저속도 이상체의 위치가 동일함을 관측하였다. 백두산 하부 100 ~ 600 km 사이에 저속도 이상이 발견되었으며 이 저속도 이상체는 백두산의 마그마 공급과 연관이 있을 것으로 판단된다. 서쪽에 다통 화산지대 동쪽 하부 300 km 부근까지, 북쪽에 우달리안치 화산지대의 경우 하부 200 km 부근 까지 저속도 이상이 발견되었다. 이 저속도 이상체는 백두산의 형성과 생성원인이 다르며, 다통 화산지대 동쪽 저속도 이상의 경우 깊은 맨틀에서의 상승류에 의해 생성되었을 가능성이 있으며, 우달리안치 화산의 경우 연약권에 상승류에 의해 생성된 것으로 판단된다. The Northeast China is an important site geologically and geophysically because of a huge volcano called Mt. Baekdu, which is one of the largest volcanoes in the world. Signs of eruption have been recently observed and people are keen to its behavior. We carried out relative travel time tomography to investigate the velocity structure between 100 ~ 600 km depth beneath Northeast China. We used teleseismic data during 2009 ~ 2011 recorded in NecessArray provided by IRIS (Incorporated Research Institute for Seismology). The relative observations were obtained by using the multi-channel cross-correlation method. Based on the tomographic results, we observed that the locations beneath which low-velocity zones are observed coincide with the locations of several volcanic regions in Northeast China. A low-velocity anomaly is revealed beneath Mt. Baekdu down to 600 km depth, which is thought to the main origin of the magma supply for Mt. Baekdu. Another low velocity anomaly is observed beneath east of the Datong volcano down to around 300 km depth, which is inferred to be related to an upwelling from deep mantle. We observed a low velocity anomaly beneath the Wudalianchi volcano down to around 200 km depth, which may imply that this volcano has been formed by an upwelling from the asthenosphere.

八脈交會穴에 關한 文獻적 考察

金容右,林鐘國 동국대학교 한의학연구소 1993 東國韓醫學硏究所論文集 Vol.2 No.2

Mindlin 판의 강성 과잉 현상과 고유치에 관한 연구

김용우,박춘수,민옥기 대한기계학회 1991 대한기계학회논문집 Vol.15 No.2

In this thesis, Mindlin plate element with nine nodes and three degrees-of-freedom at each node is formulated and is employed in eigen-analysis of a rectangular plates in order to alleviate locking phenomenon of eigenvalues. Eigenvalues and their modes may be locked if conventional $C_{0}$-isoparametric element is used. In order to reduce stiffness locking phenomenon, two methods (1, the general reduced and selective integration, 2, the new element that use of modified shape function) are studied. Additionally in order to reduce the error due to mass matrix, two mass matrixes (1, Gauss-Legendre mass matrix, 2, Gauss-Lobatto mass matrix) are considered. The results of eigen-analysis for two models (the square plate with all edges simply-supported and all edges built-in), computed by two methods for stiffness matrix and by two mass matrixes are compared with theoretical solutions and conventional numerical solutions. These comparisons show that the performance of the two methods with Gauss-Lobatto mass matrix is better than that of the conventional plate element. But, by considering the spurious rigid body motions, the element which employs modified shape function with full integration and Gauss-Lobatto mass matrix can elevate the accuracy and convergence of numerical solutions.

MATHEMATICAL ANALYSIS USING TWO MODELING TECHNIQUES FOR DYNAMIC RESPONSES OF A STRUCTURE SUBJECTED TO A GROUND ACCELERATION TIME HISTORY

김용우,정명조 한국원자력학회 2011 Nuclear Engineering and Technology Vol.43 No.4

Two types of numerical modeling techniques were considered for the dynamic response of a structure subjected to a ground acceleration. One technique is based on the equation of motion relative to ground motion, and the other is based on the equation of absolute motion of the structure and the ground. The analytic background of the former is well established while the latter has not yet been extensively verified. The latter is called a large mass method, which allocates an appropriate large mass to the ground so that it causes the ground to move according to a given acceleration time history. In this paper,through the use of a single degree-of-freedom spring-mass system, the equations of motion of the two techniques were analyzed and useful theorems are provided on the large mass method. Using simple examples, the numerical results of the two modeling techniques were compared with analytic solutions. It is shown that the theorems provide a clear insight on the large mass method.

[특집] 생명운동과 탈근대 협동운동

김용우 모심과살림연구소 2012 모심과 살림 Vol.- No.0

A-44 : 폐스크랩 고무의 탈황을 통한 재생고무 특성에 관한 연구

김용우,황인준,구현숙,김경호,박상희 한국폐기물자원순환학회(구 한국폐기물학회) 2013 한국폐기물자원순환학회 추계학술발표논문집 Vol.2013 No.-

현재 자동차 부품이나 일반 산업용 고무제품의 생산공정에서 발생하는 폐고무 및 EPDM의 발생이 많은 량을 차지하고 있다. 이를 처리하기 위하여 일부는 소각을 통해 폐기 처리됨에 따라 정부시책에 반하는 문제가 발생하며 소각시 발생되는 Gas 유해 성분 등도 문제시 되고 있으며, EPDM을 이용한 제품의 생산, 폐기 단계에 따른 환경부하를 근본적으로 해결하고 비용을 최소화하기 위한 재활용 기술이 이슈화 되고 있다. 국내 재생기술로는 기계적 분쇄공정을 거쳐 분말화하여 레진과 섞어 성형하여 생산하는 방진 관련 제품으로 사용되어지거나 소각연료로 사용됨에 따라 고비용 저부가가치 생산방법이나 처리방법을 사용하고 있는 것이 현실이다. 본 연구에서는 고부가가치의 재생고무생산을 위해 다단식 전단열분해 방식을 통한 내후성이 우수한 자동차용 부품 및 호스 등 내외장재 생산공정을 제안하고 해리기술에 필요한 공정기술을 확립하여 수요처에서 요구하는 재생고무특성을 실현하였다. 첫 번째 시제품은 EDPM Scrap 고무 종류별(Solid/Sponge Type)로 동일 조건의 첨가제로 레시피를 구성하여 생산한 결과 Sponge Type의 경우는 Solid Type 대비 경도가 낮으나 신장률에서 우수함을 나타내었다. 두번째 시제품의 경우, 고상 및 고점도용 첨가제를 개발하여 변량 적용하여 평가한 결과로 첨가제 비율 2, 4, 6%의 변수를 두었을 때 첨가제 비율이 높아짐에 따라 경도는 높아지지만 신장률이 하락하는 경향을 나타내었다. 이를 통하여 수요처에서 요구하는 재생고무 물성에 대응하여 고무의 종류 및 첨가제를 활용한 제품설계에 대한 기준을 마련하였다.

Finite element formulation and analysis of Timoshenko beam excited by transversely fl uctuating supports due to a real seismic wave

김용우,차승찬 한국원자력학회 2018 Nuclear Engineering and Technology Vol.50 No.6

Using the concept of quasi-static decomposition and using three-noded isoparametric locking-freeelement, this article presents a formulation of the finite element method for Timoshenko beam subjectedto spatially different time-dependent motions at supports. To verify the validity of the formulation,three fixed-hinged beams excited by the real seismic motions are examined; one is a slender beam,another is a stocky one, and the other is an intermediate one. The numerical results of time histories ofmotions of the three beams are compared with corresponding analytical solutions. The internal loadssuch as bending moment and shearing force at a specific time are also compared with analytic solutions. These comparisons show good agreements. The comparisons between static components of the internalloads and the corresponding total internal loads show that the static components predominate in thestocky beam, whereas the dynamic components predominate in the slender one. Thus, the total internalloads of the stocky beam, which is governed by static components, can be predicted simply by staticanalysis. Careful numerical experiments indicate that the fundamental frequency of a beam can be usedas a parameter identifying such a stocky beam.

New Evaluation and Test of Sidewall's Rotational Stiffness of Radial Tire

김용우,김용성 대한기계학회 2006 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.20 No.6