원위 대퇴골의 고립성 골연골종에서 발생한 속발성 연골 육종 1례 보고

정필현,황장수,강석,김용민,오형호,채동주,김종필 동국대학교 경주대학 1996 東國論集 Vol.15 No.-

연골육종은 비교적 서서히 자라며 늦게 전이하는 악성 연골 종양으로 알려져 있다. 골 연골종에서 발생한 속발성 연골육종은 발생빈도는 드물며 타부위로의 전이가 적고 악성도가 낮은 경우가 많아 적합한 수술적 치료로서 좋은 예후를 보이는 것으로 보고되고 있다. 본 동국대학교 정형외과학 교실에서는 우측 대퇴골 원위부 골간단부에 생긴 고립성 골 연골종에서 이차적으로 발생한 연골육종을 치험한 바 문헌고찰과 함께 보고하는 바이다. A case of Secondary Chondrosarcoma Arising from Solitary Osteochondroma of the Distal Femur Department of Orthopaedic Surgery, College of Medicine, DongGuk University Phil Hyun Chung M.D., Jung Su Hwang M.D., Suk Kang M.D., Yang Mln Kim M.D., Hyung Ho Oh M.D., Dong Ju Chae M.D., Jong Pil Kim M.D. Chondrpsarcoma is a malignant cartilage-forming tumor that grows slowly and metastasis of this tumor occurs in late stage. Secondary chondrosarcomas arising from a solitary osteocartilaginous exostosis are rare and those have a better prognosis than other chondrosarcomas, and they rarely metastasize. We present our experience with a case of secondary chondrpsarcoma arising in solitary osteochondroma of distal metaphysis of right femur with clinical details.

남녀 대학생의 성역할 모델과 취업 및 결혼관

김현주,이동원,김모란 이화여자대학교 한국문화연구원 1995 韓國文化硏究院 論叢 Vol.66 No.1-3

This study examines the differences in the expectations of employment and marriage among Korean university students. We focus on the gender differences among students. The data were collected through self-reported questionnaires in 1994. The sample size is 894 cases. Because the sexual division of labor is still a prominent pattern in Korea, we expect that the ideals and preparations, in the male-oriented employment area and in the female-oriented marriage area would show differences among female and male students. We found no difference in the employment area but significant differences in the marriage area. Rather, sex role models were found having significant implications in the male-female differences. Major findings related to marriage show that the gender effects are overlapping with the sex role model effects. However, the differences in employment area which do not show the gender difference depends on the sex role model. The results show that most university students eager to and prepare well to have a job. Although most students expect to marry, and increasing proportion of female students decide not to marry. Major reasons of the negative perspective for marriage seem to be related to the perception that the present marriage system is unfavorably constructed for women. Even if many of university students show the sign on egalitarian perspectives, the pace of changes toward egalitarianism among male students lags far behind that of among women. Based on these findings we can see many students try to maximize their interests. They would like to enjoy the stability of the preexisting sexual division of labor as well as the fruit of egalitarian division of labor.

半夏瀉心湯이 CCl4 로 유도된 간중독 흰쥐에 미치는 영향

朱旺錫,朴賢俊,尹炳局,鄭成伊,朴宣東 대한본초학회 1999 大韓本草學會誌 Vol.14 No.2

The purpose of this study is to observe the effect of Banhasasimtang on serum reaction in CCI₄ treated rats. In this study the experimental rats divided five group(Normal, Control, Sample A, Sample B and Sample C group) Under the same condition Normal group was fed basal diet and water, Control group was injected carbon tetrachloride(CCI₄ 0.5㎖/㎏) and basal diet for 2 weeks, Sample A group was injected carbon tetrachloride(CCI₄0.5㎖/㎏) and fed the Bahasasimtang extract(10㎖/㎏) for 2 weeks, Sample A group was injected carbon tetrachloride(CCI₄ 0.5㎖/㎏) and fed the Banhasasimtang extract(10㎖/㎏) for 2 weeks, Sample B group was fed the Banhasasimtang extract(10㎖/㎏) for 2 weeks and injected carbon tetrachloride(CCI₄ 0.5㎖/㎏), Sample C group was fed the Banhasasimtang extract(10㎖/㎏) for 2 weeks. The change of GOT, GPT, γ-GPT, ALP, LDH activity and Bilirubin level in blood serum. The obtained results are summarized as follows : 1. In the change of GOT GPT contents, as compared with control group, sample group was significantly decreased. 2. In the change of γ-GPT contents, as compared wth control group, sample group was significantly decreased. 3. In the change of ALP contents, as compared with control group, sample group was significantly decreased. 4. In the change of LDP contents, as compared with control group, sample group was significantly decreased. 5. In the change of Bilirubin contents, as compared with control group, sample group was significantly decreased.

비접촉 IC Card기반 생체인식 사용자 인증 시스템의 구현

주동현,염동훈,박수형,이상학,김두영 동아대학교 정보기술연구소 2002 情報技術硏究所論文誌 Vol.9 No.2

This paper is research about the certification rate improvement of system that identify user who use face, iris, voice that is biometrics element using data of non contact ic card. The proposed system is User verification system based on face image that is inputed by CCD camera, iris image and voice signal password that is consisted of 4 numbers. We compare biometrics element information of the realtime user information(based on registerd code of non contact ic card) with biometrics information of user information that is already registerd database : user verification database that is constructed from the existing users. Through the result of real time experimentation, this paper shows that the identification rate of the proposed system outperforms conventional identification system.

조혈모세포이식 후 발생한 주폐포자층 폐렴에 대한 고찰

주지현,최정현,이동건,백지연,고윤호,이혜정,김세희,신호진,박윤희,박지영,김유진,신완식,김춘추 대한감염학회 2001 감염 Vol.33 No.4

Background : Pneumocytitis cainii pneumonia (PCP) can occur in immunocompromised hosts especially such as AIDS or cancer patients. Although recent research had focused on PCP in AIDS patients, few studies have described the clinical presentations of PCP in recipients of stem cell transplantation (SCT). We evaluated the clinical manifestations of PCP in SCT patients admitted at St. Mary's hospital, Seoul, Korea. Methods : The medical records of 17 PCP patients undergoing SCT between Feb. 1998 and Feb. 2000 were reviewed. The diagnosis of PCP was confirmed through the demonstration of Pneumocytitis cainii via either cytology of brochoalveolar lavage (BAL) or histological technique of lung biopsy. CMV disease and CMV infection were confirmed by BAL culture and antigenemia respectively . Results : Seventeen patients were all recipients of allogeneic SCT and 7 of 17 patients were performed non-sibling SCT. Patients presented with symptoms including brief period (4 ∼23 days) of fever (76%), dyspnea (70%), cough (64%), and signs such as rare(58.8%), Sixteen patients (94%) had been receiving immunosuppressive agent such as cyclosporine A (64%) or Fk506 (35%) without PCP prophylaxis. Eleven patients (64%) were treated with corticosteroid with mean dose of 16 mg/day prednisolone and mean duration of 4.6 months after post-SCT period. Twelve patients were co-infected with CMV. Another co-infected miCroorganisms were Pseudomonas aeruginosa, Mycobacterium tuberculosis, herpes simplex virus, parainfluenza virus, Average duration of treatment with trimethoprim-sulfamethoxazole (TMP/SMX) was 21 ±9 days. Four patients died, and three of them were related with PCP. Conclusion : PCP developed frequently in patients who were taking immunosuppressive drug due to graft versus host disease or were not taking TMP/SMX prophylaxis. High risk patients showing fever, cough, or dyspnea should be considered to take early bronchoscopic intervention for detection of PCP. When treat for PCP, it also be considered to the possibility of coinfection such as CMV. (Korean J Infect Dis 33:273∼279, 2001)

타타늄의 열처리 조건에 따른 동전위 양극분극특성 및 표면 미세구조 변화

주동현,이용렬,정영화,양홍서,박상원,이도재,송호준,박영준 大韓齒科器材學會 2002 대한치과재료학회지 Vol.29 No.2

The corrosion resistance of metallic implants is essential for successful implant osseointegration. Moreover, the implant surface should have appropriate surface roughness for the attachment of the osteoblast and collagen fibrils. When titanium is exposed to air a thermodynamically very stable oxide film is formed at once. This oxide is very thin and yet it protects the metal from corrosion instantaneously. However, the oxide would not be ideal, and it would be supposed that the state of oxide film would be various by the different conditions when it is formed. The objective of this study was to evaluate the electrochemical properties and surface microstructural changes of titanium after passivation treatment or exposure to high heat (in vacuum or in air). ASTM grade 2 commercially pure titanium (Ti) disks of 10㎜ diameter were wet ground and polished with 240 and 600 grit SiC, and then ultrasonically cleaned with distilled water and ethanol. Cleansed as-received samples (As-R group) were passivated with 30% nitric acid solution at 50℃ for 15 minutes to make the Pas group. The Std-V samples were made by treating the Ti disks in vacuum quartz tube (10^-8 Torr) at 530℃ for 40 min for stress relieving, followed by annealing at 700℃ for 90 min, and then slow cooling to room temperature. The Std-A samples undergo identical procedure as the Std-V group except that it is done in air. For 530℃-V samples, Ti disks were heated at 530℃ for 40 minutes and slow cooled to room temperature. The 1000℃-V samples were produced by heating Std-V specimens again at 1000℃ for 2 hr, followed by cooling to room temperature. 530℃-A and 1000℃-A samples were also prepared. Potentiodynamic anodic polarization measurement, SEM, AFM and XRD analysis were performed to evaluate the effects of the various treatments. The difference in the mean values of E_corr between groups showed statistically significant difference (P<0.05), but that of I_corr did not show significance (P>0.05). When Ti surface was passivated there was a shift of corrosion potential (E_corr) in the noble direction and a lower corrosion current density (I_corr) value. Std-A samples showed most noble E_corr value among the tested groups. 530℃-V samples showed more noble E-corr than other tested groups except Std-A group. 1000℃-V samples showed more noble E-corr than those of Std-V sample. In the case of Std-, 530℃- and 1000℃-groups, -A sub-groups showed better corrosion resistant characteristics than -V sub-groups in regard to E-corr and I_corr values. In the SEM observations, the surfaces of the As-R samples showed only scratch line on smooth surface. In Pas samples, thick oxide layer covered the surface under high magnification observation. 530℃-A samples were covered by oxide granules, and Std-A samples had 25~50 nm-thick acicular oxides. The 1000℃-A samples were covered by coarse oxide crystals with a granule diameter of 0.1~0.6 μm having a gross appearance of milky white color, which was identified by XRD as a rutile. On the other hand, 1000℃-V samples showed an Widmansta¨tten structrue of which the orientation of the lattice is formed along crystallographic planes of the parent crystals. On the AFM observation, 530℃-A samples showed RMS roughness of 79.38 nm which is 5 times rougher than those of the As-R samples. Std-A sample had a roughness of 330.47 nm which is about 20-times rougher than that of the As-R sample. 1000℃-A samples were covered by coarse granular oxides and the roughness were about 0.56 μm. Vacuum sub-group samples showed a more smooth surface than air sub-group samples, and the oxide film was more dense. Due to variability of the surface treatment and heat treatment conditions, the process of the oxide formation seems to be affected thereby making the corrosion properties and surface micro-morphology different. However, more various electrochemical analysis together with surface analysis, and an investigation for the effects of those on the osteoblast cell adhesion and calcium phosphate apposition are needed for the improvement of the osseointegration rates of the titanium implants.

GHA 기반의 홍채 인식 시스템에 관한 연구

주동현,염동훈,고기영,박용기,김두영 동아대학교 정보기술연구소 2001 情報通信硏究所論文誌 Vol.9 No.1

본 논문은 Biometrics분야 중 다른 생체학적 특징보다도 정확도면에서 가장 뛰어난 특징인 안구의 홍채 패턴을 이용하여 사용자를 인증 하는 시스템에 관한 연구이다. 입력된 안구 영상으로부터 전처리 과정을 거쳐 극좌표 변환을 통해 홍채 패턴을 추출한 후 웨이블릿 변환을 이용하여 특징패턴을 압축하였으며, PCA(Principal Component Analysis:주성분 해석)의 한 종류인 GHA(Generalized Hebbian Algorithm)를 사용하여 등록된 사용자의 패턴 DB에서 Basis 배열을 추출하고, 구축된 Basis 배열과 입력 영상 패턴과의 비교 Matching을 통하여 사용자를 인증하는 시스템을 제안한다.

척수 경막외 혈관 기형에 의한 재발성 척수병증

오동호,김희태,박운규,이영주,김승현,김주한,김명호,박문향 대한신경과학회 1998 대한신경과학회지 Vol.16 No.5

내러티브 중심 교과교육에 대한 교수, 교사, 학생의 인식 차이분석

주동범,강현석 이화여자대학교 교육과학연구소 2008 교육과학연구 Vol.39 No.2

Using a total of 702 people(71 professors, 299 teachers, and 332 students), the study was analyzing how do professor, teacher, and student perceive about narrative-centered subject education and the differences among groups in the perception. The main results are as follows. First, teacher group is positive about current subject education, but professor and student group are negative. Second, compared to teacher group, professor and student group are negative about current subject education and have more needs for change. And professors are positive about the applicability of narrative, but they are likely to have cautious stance about the composition and operation of curriculum. Professor and student group are more positive about specific application of narrative such as instructional syllabus, instructional materials, and the development of instructional material. Third, processor and student group are more positive than teacher group about the necessity of mutual complement of knowledge-based subject and narrative, and possibility of narrative will be selected as a new curriculum and the increment of its importance. However, teachers are more negative than students about narrative because teachers think narrative is highly possible to be limited to an instructional method simply. Discussions on main results and recommendations for further research were presented. 본 연구의 목적은 내러티브 중심 교과교육에 대해 관련 이해당사자라 할 수 있는 교수, 교사, 학생은 어떻게 인식하고 있으며 이러한 인식이 집단 간에 차이가 있는지를 실증적·경험적으로 분석하는 것이다. 내러티브 중심 교과교육에 대한 이론적 검토를 통해 제작된 질문지를 총 702명(교수 71명 , 교사 299명, 학생 332명)을 대상으로 실시하여 얻은 자료를 분석하여 나타난 주요 결과는 다음과 같다. 첫째, 현행 교과교육에 대해 교사집단은 다소 긍정적인 반면에 교수와 학생집단은 다소 부정적이다. 둘째, 교수와 학생집단이 교사집단에 비해 현행 교과교육에 대해 더 부정적이고 더 많은 변화 요구를 가지고 있다. 그리고 교수들은 내러티브 활용가능성에 대해 긍정적이나 내러티브 교육과정의 편성 및 운영에 대해서는 신중한 입장을 보이고 있다. 수업지도안, 수업 소재, 수업 자료 개발 등과 같은 구체적인 내러티브 활용에 대해 교수집단과 학생집단이 더 긍정적이다. 셋째, 교수집단이나 학생집단은 교사집단보다 주지교과와 내러티브의 상호 보완이 필요하다고 여기며, 내러티브가 새로운 교육과정으로 채택될 가능성과 그 중요성의 증가에 대해 더 긍정적이다. 반면에 교사들은 학생들에 비해 내러티브가 단지 수업 방식에 국한될 가능성이 높다고 보고 있어서 내러티브에 대해 다소 부정적이다. 주요 결과에 대한 논의 및 후속 연구를 위한 제언 등이 제시되었다.

사회적 자본이 방문판매사업의 성과에 미치는 영향

최용주, 이동현, 성재열 가톨릭대학교 사회과학연구소 2010 社會科學硏究 Vol.26 No.-