Collagen으로 유발된 생쥐의 관절염에 대한 당귀사역가오수유생강탕(當歸四逆加吳茱萸生薑湯)의 효과

김민균 ( Min Kyun Kim ),오민석 ( Min Seok Oh ) 한방재활의학과학회 2011 한방재활의학과학회지 Vol.21 No.2

Objectives: This study was carried out to know the effects of Danggwisayeokgaohsuyusaenggang-tang(hereinafter referred to DST) on arthritis induced by collagen on DBA/1 OlaHsd mice. Methods: For this purpose, DST was orally administered to mouse with arthritis induced by collagen Ⅱ. Cytotoxicity, high performance liquid chromatograph(HPLC) analysis, arthritis index, value of immunocyte in draining lymph node and paw joint, cytokine were measured in vivo. Results: 1. The cytotoxicity against human fibroblast cells(hFCs) was not measured in any concentration. 2. In HPLC analysis, There are high peak patterns at 8 minute(min), 12 min, 35 min, 45 min. 3. The arthritis index was decreased significantly. 4. The degree of arthritis induced damage of joint of DST group is slight compared with control group in histopathologic observation(Hematoxylin and eosin stain(H&E), Masson`s trichrome(M-T) staining). 5. In total cell counts of draining lymph node(DLN) and paw joint, the cells in DLN decreased significantly on DST 200 mg/kg and the cells in paw joint decreased significantly on 200 mg/kg and 50 mg/kg. 6. In DLN, CD4+/CD25+, CD3+/CD69+, major histocompatibility complex(MHC) class-II/CD11c+ cells decreased significantly on DST 200 mg/kg and 50 mg/kg, CD3+/CD8+ cells decreased significantly on DST 200 mg/kg, CD4+, CD3+/CD44+ cells decreased. 7. In paw joints, CD4+, CD11b+/Gr-1+ cells decreased significantly on DST 200 mg/kg and 50 mg/kg. 8. In joints, levels of IL-1β, IL-6, TNF-α, cyclo-oxygenase-2(COX-2), NOS-II were decreased on DST 200 mg/kg and DST 50 mg/kg. 9. In analysing of cytokine in CD3/CD28 activated spleen, IL-17 was decreased significantly, IL-4 was increased significantly and INF-γ was decreased on DST 200 mg/kg. 10. In analysing of cytokine in collagen activated spleen, IL-17 were decreased significantly, IL-4 was increased significantly. Conclusions :This results demonstrated that DST suppressed the inflammatory progression of collagen-induced arthritis(CIA) mice and supported further studies are required to survey continuously in looking for the effective substance and mechanism in the future.

안면골 골절의 발생 양상에 관한 7년간의 추적조사연구

오민석,김수관,김학균,문성용,Oh, Min-Seok,Kim, Su-Gwan,Kim, Hak-Kyun,Moon, Seong-Yong 대한악안면성형재건외과학회 2007 Maxillofacial Plastic Reconstructive Surgery Vol.29 No.1

This report constitutes a 7-year study of facial fractures based on a series of 616 patients who were treated for facial fractures as in-patients at Chosun University Dental Hospital between 1998 and April 2005. The following results were obtained : 1. The ratio of men to women was 5 : 1. 2. The major etiological factors were falls (36.2%), traffic accidents (23.4%), punches (18.1%), sports (8.3%), and accidents related to work (2.8%). 3. They were most frequent in the second (28.8%), first (26.6%), and third (12.3) decades, in that order. 4. The sites of frequent mandible fracture are the symphysis (32%), left mandibular angle (25.3%), and right mandibular angle (10.9%). 5. The most frequent maxillary fractures were zygomatic fractures (46.4%), Le Fort I fractures (28.8%), and Le Fort II (12.0%) fractures.

K/Ka 대역에서의 LTCC를 이용한 송수신 겸용 L형태 광대역 원형 편파 안테나

오민석,천영민,김성남,이종문,표철식,최재익,천창율,Oh Min-Seok,Cheon Yung-Min,Kim Sung-Nam,Lee Jong-Moon,Pyo Cheol-Sig,Choi Jae-Ick,Cheon Changyul 한국전자파학회 2004 한국전자파학회논문지 Vol.15 No.9

본 논문에서는 LTCC(Low Temperature Co-fired Ceramic) 공정을 이용한 K/Ka 대역(20~21 GHz/30~31 GHz) 위성통신 송수신 겸용 L형태의 광대역 원형편파 안테나를 제안하였다. 이 안테나는 상대 유전율이 5.2인 LTCC 공정을 이용하여 제작되었으며 적층형 구조로서 다른 RF 회로와 집적화가 가능하다. 또한 LTCC을 이용하였으므로 가벼우면서 다른 RF 회로와의 집적화를 통해 손실을 줄일 수 있고, 전체적으로 시스템 크기를 줄일 수 있다. 본 논문에서 사용한 안테나는 모노폴 안테나의 구부러진 L형태의 간단한 구조로서 LTCC 공정상에서의 구현을 쉽게 하고 손실을 최소화할 수 있도록 하였다. The TX/RX broadband L-type circular polarization antenna using LTCC(Low Temperature Co-fired Ceramic) for satellite communication at K, Ka band(20~21 GHz/30~31 GHz) has been presented. This antenna has been analyzed in compensation for LTCC with relative permittivity 5.2 and could have been integrated with RF component. Also antennas on LTCC enable :o reduce loss of RF system due to integrate with RF circuits and to light weight, and thus, generally one can reduce size of the RF system. As the geometry of this antenna presented is made simple by L type of monopole antenna, it is easily manufactured by LTCC progress and enables to reduce loss.

효율적인 휴리스틱 계산 처리를 위한 가중치 기반의 선수행 A^* 알고리즘

오민석,박성준,Oh, Min-Seok,Park, Sung-Jun 한국게임학회 2013 한국게임학회 논문지 Vol.13 No.6

경로 탐색은 인공지능의 매우 중요한 요소 중의 하나이며, 여러 분야에서 두루 쓰이는 과정이다. 경로 탐색은 매우 많은 연산이 필요하기 때문에 성능에 매우 중대한 영향을 미친다. 이를 해결하기 위해서 연산량을 줄이는 방식의 연구가 많이 진행되었고, 대표적으로 A* 알고리즘이 있으나 불필요한 연산이 있어 효율성이 떨어진다. 본 논문에서는 A* 알고리즘 중 연산 비용이 높은 노드 탐색 수 등 연산량을 줄이기 위해서 가중치 기반의 선수행 A* 알고리즘을 새롭게 제안한다. 제안한 알고리즘의 효율성을 측정하기 위해 시뮬레이션을 구현하였으며, 실험 결과 가중치를 이용하는 방법이 일반적인 방법보다 약 1~2배 높은 효율을 보였다. Path finder is one of the very important algorithm of artificial intelligence and is a process generally used in many game fields. Path finder requires many calculation, so it exerts enormous influences on performances. To solve this, many researches on the ways to reduce the amount of calculate operations have been made, and the typical example is A* algorithm but it has unnecessary computing process, reducing efficiency. In this paper, to reduce the amount of calculate operations such as node search with costly arithmetic operations, we proposes the weight based pre-processing A* algorithm. The simulation was materialized to measure the efficiency of the weight based pre-process A* algorithm, and the results of the experiments showed that the weight based method was approximately 1~2 times more efficient than the general methods.

RF 마그네트론 스퍼터링 법으로 사파이어 기판 위에 성장시킨 ZnO: Ga 박막의 RTA 처리에 따른 photoluminescence 특성변화

조정,나종범,오민석,윤기현,정형진,최원국,Cho, Jung,Na, Jong-Bum,Oh, Min-Seok,Yoon, Ki-Hyun,Jung, Hyung-Jin,Choi, Won-Guk 한국진공학회 2001 Applied Science and Convergence Technology Vol.10 No.3

RF마그네트론 스퍼터링법으로 사파이어 기판 위에 Ga을 1 wt% 첨가한 ZnO 박막(GZO)을 기판온도 $550^{\circ}C$에서 성장시켜 다결정 박막을 제조하였다. 이러한 박막은 불충분한 전기적 특성이나 PL(Photoluminescence) 특성을 보이고 있다. 이러한 전하농도, 이동도 그리고 PL특성 등과 같은 전기적 광학적 특성을 향상시키고자 질소분위기하에서 RTA(Rapid Thermal Annealing) 법으로 $800^{\circ}C$와 $900^{\circ}C$에서 각각 3분씩 후열처리 하였다. RTA법으로 후열처리한 GZO박막의 비저항은 $2.6\times10^{-4}\Omega$/cm 였으며 전자농도와 이동도는 각각 $3.9\times10^{20}/\textrm{cm}^3$과 60 $\textrm{cm}^2$/V.s 였다. 이러한 물리적 성질들의 향상은 열처리시 원자 크기가 비슷한 도핑된 Ga 원자들이 일부 휘발되는 Zn 빈자리로 치환하면서 침입자리 보다는 치환자리로의 전이에 기인한 것으로 생각된다. $Ga_2O_3$(1 wt%)-doped ZnO(GZO) thin films were grown on ${\alpha}-Al_2O_3$ (0001) by rf magnetron sputtering at $510^{\circ}C$, whose crystal structure was polycrystalline. As-grown GZO thin film shows poor electrical properties and photoluminescence (PL) spectra. To improve these properties, GZO thin films were annealed at 800-$900^{\circ}C$ in $N_2$atmosphere for 3 min. After the rapid thermal annealing(RTA), deep defect-level emission disappears and near-band emission is greatly enhanced. Annealed GZO thin films show very low resisitivity of $2.6\times10^{-4}\Omega$/cm with $3.9\times10^{20}/\textrm{cm}^3$ carrier concentration and exceptionally high mobility of 60 $\textrm{cm}^2$/V.s. These improved physical properties are explained in terms of translation of doped-Ga atoms from interstitial to substitutional site.

일부 "수식언"의 품사에 대하여 -"맨", "한", "약(約)", "총(總)"을 대상으로 -

오민석 ( Min Seok Oh ) 한국외국어대학교 언어연구소 2008 언어와 언어학 Vol.0 No.41

This paper aims to re-classify some determiners as adverb. So far it is said that there are determiner and adverb as modifier in Korean grammatical category, and the core difference between determiner and adverb is what category is modified, nominals by determiner and verbals and any other components except nominals in sentence by adverb. But there are some pairs which is assorted as different category but have similar syntactic function like ``maen, kasang``, ``han, yak(約), daechoong``, ``chong(總), modoo``. As examining free displacement in senence, postposition combinablity, characteristics known as idiosyncrasy of determiner or adverb is not for grammatical category, but for individual word. Consequently it is needed to redefine some determiners as adverb at least.

열차운행효율화를 위한 운전관계 사규에 대한 연구

오민석(Min-Seok Oh),김호순(Ho-Soon Kim),정도원(Do-Won Jeong) 한국철도학회 2010 한국철도학회 학술발표대회논문집 Vol.2010 No.7

Railway is facing a new era by the remarkable technology-intensive development of railways in the rolling stock and track, trains and infrastructure facilities. But the relevant provisions of the regulations for the various driving speed limit accept most of the past rules and it is desperately needed to realize the efficiency of the train operation. In addition, because the rules that drive too many treats of redundancy(the same information is duplicated in the other company policy provisions), they can cause confusion among employees, and also because of the contents of the detailed provisions dealing with almost same regulations, they can cause probable failure and big accident. In this study, the relevant provisions of the current rules are analyzed and overcome problems to improve efficiency and duplicated contents of relevant provisions to drive trains are merged. Also by reorganization of complex speed limits, we can understand easily when even the unusual situation and make a simple decision to prevent accidents. As a result, we can establish the system by doing subsequent actions quickly and accurately.

내적 식민지, 판타지, 그리고 성의 정치학: 컬리턴의 『에이프릴 레인트리를 찾아서』

오민석 ( Min Seok Oh ) 영미문학연구회 2008 영미문학연구 Vol.14 No.-

This paper aims to read Beatrice Culleton`s In Search of April Raintree in terms of internal colony, fantasy, and sexual politics. This work is the first modern novel published by a Canadian aboriginal writer. To approach aboriginal writings focusing only on their common distinctive features such as affinity with nature, oral tradition, ritual, anti-materialism, etc. can be an effective way to introduce them but may alienate and separate them in a museum of literary history. The aboriginal life, culture, and literature have been involved in the contemporary capitalist society, in itself a part of it, and existing as the living present. Therefore the aboriginal literature should be treated as the present not as the past and as a kind of contemporary minority literature. Internal colony in this paper means the phenomena and the space in which the colonizer who monopolizes the capital and the power keeps on exploiting and repressing the colonized continuously in a nation, in a territory, and in a society by eternalizing its colonization. In Culleton`s novel, the internal colony is entangled with various fantasies of the colonizer and the colonized. These fantasies form the identities of both the colonizer and the colonizer, distorting their identities at the same time. April and Cheryl is the typical characters who show the case of the colonized in this internal colony. Internal colony is basically a political concept but cannot be understood in isolation from gender and sexual politics. Culleton`s novel shows this especially with its long and detailed scene of sexual rape and the concept of "native girl syndrome" which is the colonizer`s, etc. In conclusion, Culleton`s novel is the typical text which shows the contradictions of internal colony and for reference its discursive transparency matches well its content which is obliged to be discussed in an other paper.

OQPSK 전송방식의 에러보정 회로 설계

오민석(Oh Min Seok),남민호(Nam Min Ho),이재흠(Lee Jae Heum),조경록(Cho Kyung Rok) 한국통신학회 2018 한국통신학회 학술대회논문집 Vol.2018 No.1

딥러닝 기술을 활용한 PRESENT 평문 복구 공격

김동훈 ( Donghoon Kim ),권동근 ( Donggeun Kwon ),김성겸 ( Seonggyeom Kim ),홍득조 ( Deukjo Hong ),성재철 ( Jaechul Sung ),홍석희 ( Seokhie Hong ) 한국정보처리학회 2020 한국정보처리학회 학술대회논문집 Vol.27 No.2

최근, 딥러닝 기술을 활용하여 암호 알고리즘 식별, 평문 복구, 이론적 암호분석을 향상시키는 방법 등이 제안되고 있다. 이 중, 2019년에 Xiao 등이 암호학적 특성을 고려되지 않고 2-라운드 DES의 평문복구 공격에 딥러닝을 적용하는 방법을 제안하였다. 본 논문에서는 이러한 기법을 향상하여 암호문과 평문의 선형 연관성을 고려한 평문 복구 공격을 딥러닝을 통해 수행하는 방법을 제안한다. 이를 활용하여, PRESENT의 평문 복구 공격을 5-라운드까지 가능함을 보인다.