기계구조용 탄소강의 표면개질을 위한 펄스 YAG 레이저의 적용

배춘익,옥철호 慶南專門大學 2000 論文集 Vol.28 No.1

액상 에피탁시법으로 成長시킨 GaAs의 Photoluminescence

裵仁鎬,李哲旭,金仁洙 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-

Eptaxial layers of undoped GaAs were grown by liquid phase epitaxity(LPE) method on semi-insulating GaAs(100) substrates. GaAs epitaxial layers were characterized by photoluminescence(PL). In the as-grown LPE samples, the emission peaks observed at 1.511, 1.492 and 1.478eV. A PL peak at 5.11eV attributed to the excitons bound to neutral acceptors, and the peaks at 1.492 and 1.478eV were related to carbon and germanium, respectively. The crystal quality of the samples with gallium baking were superior to without baking. Increasing the excitation intensity, the exciton peak varies sensivity, but the peaks due to impurities no significant change. As the anneal temperature is increased, the crystal quality of samples are reduced.

레이저 표면경화면과 마찰면의 프랙탈 차원 적용에 관한 연구

배춘익,옥철호 慶南專門大學 2001 論文集 Vol.29 No.1

Azathioprine에 반응을 보인 류마티양 관절염에 의한 경막염(Pachymeningitis)1예

배광봉,이정호,이정찬,곽상혁,강정현,김철희,김현수,김종숙,조덕연,김삼용 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.1

Rheumatoid arthritis frequently involves the cervical spine and may lead to neurologic impairement. However, direct involvement of CNS structures by inflammatory cells has been reported infrequently. The prevalence of this complication of rheumatoid arthritis is unknown. Inflammatory CNS involvement in rheumatoid arthritis reportedly occurs in the setting of longstanding, active, erosive articular disease and is accompanied by extracranial and extraspinal nodules and vasculitis. This is diagnosed by radiologic finding of CNS nodules or meningeal thickening and by biopsy or autopsy. Treatment with corticosteroid, cytotoxic agent or surgical decompression is helpful. But the majority of patients die within several months of onset of neurologic symptom. Recently, we experienced a case of pachymeningitis caused by rheumatoid arthritis, which resolved repeatedly with azathioprine treatment.

연속파형 Nd:YAG 레이저에 의한 인코넬 600의 용접 공정변수의 연구

배신철,유영태,송성욱,신호준,나기대 朝鮮大學校 機械技術硏究所 2004 機械技術硏究 Vol.7 No.1

The laser welding process is one of the most advanced manufacturing technologies owing to its high speed and deep penetration. Welding characteristics of Inconel 600 Alloy using a continuous wave Nd:YAG laser are experimentally investigated. The major process parameters studied in the present laser welding experiment were position of focus, laser power, travel speed. The gap and offset maintained as small as possible. Optical microscope were used to investigate the microstructures of the welded zone. The follow conclusions can be drawn the laser power and travel speed have a pronounced effect the fusion zone size and shape.

태권도 참여정도와 목표지향 및 인지된 자유감의 관계

김진배,장호중,유희철,박순문 한국학교체육학회 2003 한국학교 체육학회지 Vol.13 No.2

본 연구의 목적은 태권도 참여정도와 목표지향 및 인지된 자유감의 관계를 규명하는데 있어 연구대상은 2003년 현재 서울?경기 지역에 거주하며 태권도 수련을 하는 20세이상의 성인 남 228명, 여 272명, 총 500명을 대상으로 하여 목표지향을 측정하기 위해 Duda(1989)와 Nicholls(1989)에 의해서 개발된 TEOSQ를 성창훈이(1995)이 번안 작성한 설문지를 사용하였고 인지된 자유감(perceived freedom)을 측정하기 위해서는 여가진단 도구(Leisure Diagnostic Battery; LDB, Witt & Ellis, 1987) 원형중(1989)이 한국의 실정에 맞게 번안 검증하여 재개발한 여가진단 도구중에서 인지핀 자유감 척도를 사용하였다. 자료분석을 위해 사용된 통계분석은 프로그램인 WNDOWS용 SPSS/PC+ 10.0버전 을 이용하여 빈도분석(Frequency), 신뢰도분석(Reliability analysis), 일원인량분석(one-way ANOVA), 중다회귀블석 (multiple regression analysis)을 실시한 결과 첫째, 인구통제학적 특성에 따른 목표지향, 인지된 자유감의 차이는 부분적으로 나타났다. 둘째, 태권도 수련정도와 목표지향 및 인지된 자유감은 부분적으로 영향을 미치는 것으로 나타났다. 셋째. 태권도 수련자의 목표지향은 인지된 자유감에 영향을 미치는 것으로 나타났다. A study on the relation among the level of practice of Taekwondo, goal orientation and perceived freedom The purpose of this study is to look into the relation among the level of practice of Taekwondo, goal orientation and freedom. The, survey was conducted against 500 subjects, which consists of 272 female adults and 228 male adults above 20 who are practicing Taekwondo in the Seoul and Gyeonggi areas as of 2003. For evaluating the goal orientation, we used two research tools: 1) for evaluating the goal orientation, the questionnaire that Seong Chang-hun(1995) adapted the TEOSQ(Task and Ego Orientation in Sort Questionnaire) which was developed by Duda(1989) and Nicholls(1989), 2) for evaluating the perceived freedom, the perceived freedom scale which is one of the tools that Won Hyeong-jung(1989) adapted, verified and re-deveoped the LDB(Leisure Diagnostic Battery; Witt & Ellis, 1987) in consideration of domestic conditions. For analysis, we performed frequency analysis, reliability analysis, one-way ANOVA, and multiple regression analysis against the data with SPSS/PC+ Version 10.0 for WINDOWS which one of popular statistical analysis programs. Based on the above research procedure, we could conclude as follows: First, difference between the goal orientation and the perceived freedom of Taekwondo practicians was partially shown on the basis of demographic characteristics. Second, the level of practice of Taekwondo partly influenced their goal orientation and perceived freedom. Third, their goal orientation influenced their recognized freedom.

상완골 근위부 분쇄 골절에서의 상완골 두 치환술

서중배,원중희,김용민,최의성,이호승,홍윤철 대한견.주관절학회 2000 大韓肩.주關節學會誌 Vol.3 No.2

인터넷 통신에서 자바 바이트코드를 이용한 애플릿 보안

윤찬호,석경휴,나기창,배철수,나상동 조선대학교 전자정보통신연구소 2002 電子情報通信硏究所論文誌 Vol.5 No.1

Java applets are downloaded from web server through internet and executed in Java Virtual Machine of clients' browser. Before execution of java applets, JVM checks bytecode program with bytecode verifier and performs runtime tests with interpreter. However, these tests will not protect against undesirable runtime behavior of java applets, such as denial of service attack, email forging attack, URL spoofing attack, or annoying sound attack. In order to protect malicious applets, a technique used in this paper is java bytecode modification. This technique is used to restrict applet behavior or insert code appropriate to profiling or other monitoring efforts. Java byte modification is divided into two general forms, class-level modification involving subclassing non-final classes and method-level modification used when control over objects from final classes or interface. This paper showed that malicious applets are controlled by java bytecode modification using proxy server. This implementation does not require any changes in the web sever, JVM or web browser.

일부농촌 지역노인들의 유병상태와 일상생활 능력

신철호,이태용,이동배 충남대학교 의과대학 지역사회의학연구소 1992 충남의대잡지 Vol.19 No.1

This study was conducted to investigate the prevalence rate, activity of daily living of rural elderly. The study group was composed of 820 old people aged 65 or more, living in Chungnam provincial area. The results obtained were as follows: 1. The prevalence rate rise rapidly with increasing age and that of male was 65.9%, and female was 70.8%. The prevalence rate of chronic diaseses were the highest in muscular disease and arthropathy as 51.5%, 16.8% in cerebrovascular disease and 12.6% in respiratory disease. 2. The ability score of daily living of male as 76.3% was similar that of female as 74.7%. The ability score of daily living went down with increasing age and statistically significant(P<0.01). The ability score of daily living of those who were not ill were higher than that of those who were ill. The ADL of those who have been a spouse was higher than that of those who were single. The number of family member and alcohol drinking influenced to the score of ADL, but level of education and smoking didn't influenced to that. The diseases that influenced to the score of ADL were cerebrovascular disease, cancer, and diabetes mellitus. The factors that influenced to the ADL were age, the presence of chronic disease, alcohol drinking, and the number of family members. 3. The score of cognitive function of male as 89.3% was higher than that of female as 86.1%. The score of cognitive function was the highest in 65-69 years of age. The presence of ill didn't influence the score of cognitive function. The score of cognitive function of those who have been a spouse was higher than that of those who were single. The number of family member, alcohol drinking, level of education, and smoking didn't influence the score of cognitive function. The score of cognitive function were high in renal disease, hepatic disease, and cancer, but that were low in cerebrovascular disease, muscular disease and arthropathy, and respiratory disease. The factors that influenced to the cognitive function were age, marital status.

3성분계 콘크리트의 압축강도와 등가재령 관계에 관한 실험적 연구

나철성,윤종기,장종호,길배수,남재현,김무한 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.1(구조계)

Activation energy has different value according to cement, admixture and water-cement ratio. Also the relation of age-temperature is as non-linear as activation energy value is large. Therefore to make accurate explanation for the effect of temperature on concrete strength development properties, it is necessary for activation energy value to explain in the maturity function. This study compares and estimates equivalent age used activation energy value that obtained by this experiment and Freiesleben activation energy value with compressive strength of concrete. As the result of this study, activation energy value obtained by this study has more accurate explanation temperature's influence about concrete strength development than Freiesleben activation energy value.