HAU 반작용 휠 위성 하드웨어 시뮬레이터 개발

오화석,윤영득 한국 항공대학교 항공산업기술연구소 1999 航空宇宙産業技術硏究所 硏究誌 Vol.9 No.-

본 연구에서는 토크 측정을 위해 개발된 토크 측정 저울과 구동기를 주 하드웨어로 하는 소프트웨어부와 하드웨어부로 구성된 위성 하드웨어 시뮬레이터를 설계 및 제작하였다. 본 논문에서는 위성 하드웨어 시뮬레이터의 개념 설계와 운용 방법을 소개하고, 시뮬레이터의 각 부에 대한 세부 설계 및 제작에 대해 설명하였다. 또한 자세 제어 폐루프 시험에 우선하여 정적/동적 제어 시험을 수행하였다. Hankuk Aviation University Hardware-In-The-Loop Satellite Simulator composed of Software subsystem and Hardware subsystem including torque measuring scale and an actuator has been developed. Conceptional design and operation concept of the Simulator is introduced. Detailed design and manufacturing procedure of each unit of simulator is shown. Static and dynamic performance tests prior to attitude control closed loop test in the future have been performed.

운동이 골밀도에 미치는 영향 : 문헌을 중심으로

오덕자,남태호,황영성 부산대학교 체육과학연구소 2000 體育科學硏究所 論文集 Vol.16 No.-

The results about the influence of exercise on BMD were different from each literatures; some showed the influence was restrictive, others whole. But many studies have suggested that a physical exercise can be a very important factor to cure and prevent osteoporosis because exercises have a close relationship with BMD. Like this, through the literature study, the results about the influence of exercise on BMD are as follows; 1.The proper exercise with the intake of calcium is effective in cure and prevention of osteoporosis. 2.A steady and dynamic weight bearing exercise is the proper pattern of exercise. 3.The bone loss at menopause is mainly affected by hormone but the loss can be reduced according to the degree and strength of exercise. 4.A steady training can increase BMD in a growth period and prevent osteoporosis in an old age because it prevents bone loss.

제2형 당뇨병 남성 환자에서 유리 테스토스테론과 성호르몬 결합 글로블린 농도

남기덕,김영설,박철영,오승준,김덕윤,우정택,김성운,양인명,김진우,최영길 대한당뇨병학회 2002 Diabetes and Metabolism Journal Vol.24 No.6

연구배경:인슐린저항성은 제2형 당뇨병과 심혈관질환의 주요한 위험 인자로 성호르몬과 상호 관계가 있다고 알려져 있다. 그러나 여성과는 달리 남성에서는 연령과 인슐린저항성에 따른 유리 테스토스테론과 성호르몬 결합 글로블린 농도의 변화에 대한 연구가 부족한 실정이다. 그러므로, 본 저자등은 제2형 당뇨병 남성 환자에서 정산인과 비교해서 유리 테스토스테론과 성호르몬 결합 글로블린 농도를 측정하고 연령에 따른 변화 정도를 알아보고자 하였다. 방법:대상 환자 모두에서 연령과 체질량지수, 총 콜레스테롤, 중성지방, 공복혈당과 인슐린 농도를 측정하였다. 혈중 유리 테스토스테론 농도는 방사면역측정법(radioimmunoassay)을 이용해서 측정하였고, 혈중 성호르몬 결합글로불린은 면역방사계측측정법(immunoradiometric assay)을 이용해서 측정하였다(Diagnostic System Laoratories, Wbster, TX, USA). 결과:1)제2형 당뇨병 남성 환자에서 정상 대조군 남성에 비해 성호르몬 결합글로불린은 104.1±35.0 vs 25.7±3.5 mole×10??로 의미 있게 높았으나(p<0.001), 유리 테스토스테론은 13.7±9.5 vs 13.6±6.5 ng/dL로 차이가 없었다. 2)연령과 성호르몬 결합 글로블린 사이의 상관 계수는 제2형 당뇨병 남성 환자에서 0.40로 중등고의 양의 상관 관계를 보였고(p<0.001), 정상 대조군 남성에서 0.11로 유의한 상관 관계를 보이지 않았다. 연령과 유리 테스토스테론 사이의 상관 계수는 제2형 당뇨병 남성 환자에서 0.08, 정상 대조군 남성에서-0.17로 모두에서 유의한 상관 관계를 보이지 않았다. 3)연령과 체질량지수를 보정한 후에 제2형 당뇨병 남성 환자와 정상 대조군 남성에서 혈중 인슐린 농도, 유리 테스토스테론과 성호르몬 결합 글로블린 사이에는 상관 관계가 없었다. 결론:제2형 당뇨병 남성 환자에서 정상 남성에 비해 성호르몬 결합 글로블린 농도가 증가되어 있었으며, 유리 테스토스테론은 차이가 없었다. 연령이 증가함에 따라 성호르몬 결합 글로블린이 제2형 당뇨병 남성 환자에서 정상 남성에 비해 증가 폭이 의미있게 컸으며, 유리 테스토스테론은 변화가 없었다. Background: Insulin resistance is a risk factor for cardiovascular disease and type 2 diabetes mellitus. There are many previous studies indicating that insulin lowers serum sex hormone-binding globulin levels, and there is inverse correlation between insulin resistance and serum sex hormone-binding globulin levels in women. However, in men, a limited number of studies are available to explain the effect of sex hormone on age and insulin. Therefore, the present study was undertaken to investigate the relationship among free testosterone, hormone-binding globulin and age in type 2 diabetic men and control subjects. Method: Age, body mass index, total cholesterol, triglyceride, fasting blood sugar, and insulin concentrations were examined on 89 type 2 diabetic men and 47 control subjects. The free testosterone level was measured by commercially available double-antibody system (Radioimmunoassay). The sex hormone-binding globulin level was also measured by commercially available double-antibody system(Immunoradiometric assay). Results: 1) Sex hormone-binding globulin level was significantly increased in patients with type 2 diabetes. However, there was no significantly difference in free testosterone level between the two groups. 2) Sex hormone-binding globulin was positively correlated with age (r=0.4, p <0.001) in patients with type 2 diabetes. Sex hormone-binding globulin and free testosterone were not correlated with age in control sujects. 3) Free testosterone and sex hormone-binding globulin concentrations were not significantly related to serum insulin concentration after adjusting for age and body mass index. Conclusions: We observed increased sex hormone-binding globulin concentration in diabetes man, and was a positively related to age. Further studies are needed to understand the relationships between age, insulin resistance, testosterone, and sex hormone-binding globulin concentrations(J Kor Diabetes Asso 24:699~707,2000).

유방선암의 유형에 따른 c-erbB-2, p53, bcl-2, 그리고 c-myc의 발현

강영근,조현득,오미혜,김의한,양승하 순천향의학연구소 2006 Journal of Soonchunhyang Medical Science Vol.12 No.2

Breast carcinoma is a common malignant tumor in female of the korea. Various oncogenes have been found in malignant tumor cells. There were many reports or correlation between the prognosis of patients and c-erbB-2, p53, bcl-2, and c-myc, but is controversial. We performed immunohistochemical stain for above antigenic protein for 80 cases of breast carcinoma and evaluated expression rate of each antigens, and we compared their correlation with prognosis of patients. The results were as follow; 1) The expression rates in breast carcinoma was c-erbB-2 80%, p53 56.3%, bcl-2 51.3% and c-myc 53.8%. 2) c-erbB-2 showed no significant difference according to histologic types, grade, and lymph node metastatic status of breast carcinoma. 3) p53 showed higher expression rate in metastatic cases compared to non-metastatic cases, and it showed higher expression rate according to increasing of grade without significant difference. There is no significant difference according to types. 4) The expression rate of bcl-2 in breast carcinoma be lowed according to increasing of grade. There was no significant difference according to types, side, and status of lymph node metastasis. 5) c-myc showed higher expression rate in non-metastatic cases compared to and metastatic cases, and it showed decreasing expression rate according to increasing of grade without significant difference. There is no significant difference according to types. 6) p53 and bcl-2 in breast carxinoma showed reverse corre1ation(P < 0.05), and bc1-2 and c-myc showed close correlation without statiscally significance. Above results showed that p53 may be related to poor prognosis of the patients and c-myc may be related good prognosis in breast carcinoma. There was reverse correlation between p53 and bcl-2 and bcl-2 and c-myc may be correlated closely. c-erbB-2 and bcl-2 showed no interrelation to prognosis.

Gas-Liquid Chromatography를 이용한 사과 및 배 중의 농약 다성분 잔류분석법

박주황,김택겸,오창환,김정한,이영득,김장억 한국환경농학회 2004 한국환경농학회지 Vol.23 No.3

사과 및 배 시료에서 농약 다성분의 gas chromatography를 이용한 잔류분석법 확립을 위하여 199가지의 농약를 선정 하여 retention time 및 검출기에 따라 ECD 5 그룹 및 NPD 5 그룹의 10개 그룹으로 분류하였다. 시료의 종류에 따른 분석조건을 확립하기 위한 회수율 시험은 농약들의 log P_(ow) 값과 화학적 분류에 따라 총 18개 (ECD 11개, NPD 7개)의 농약을 선정하였다. 예비실험 후 확립된 분석방법에 따라 10개 그룹의 혼합 표준용액으로 사과 및 배에 대한 회수율시험을 행하였다. 그 결과, 총 196가지의 농약의 70%에 해당하는 사과에서 136개, 배에서 133개의 농약들에서 회수율 70에서 120%의 양호한 결과를 나타내었다. 그러나 사과에서 43개, 배에서 45개의 농약들이 70% 미만의 회수율을 보였고, fenvalerate는 120% 이상의 회수율을 나타내었으며, 사과에서 17개 및 배에서 18개의 농약들은 검출이 되지 않았다. 그러나 확립된 분석법은 SOP에 의한 신속하고 수월한 수행으로 농산물 중의 잔류농약을 검출 및 모니터링하는 목적에 적합하다고 사료된다. A rapid analytical method was developed to determine multiple pesticide residues in apples and pears using gas-liquid chromatography (GLC). The samples were extracted with water-miscible solvents and purified by cleanup procedures serially comprising liquid-liquid partition and solid-phase extraction (SPE). Each analyte was separated and determined by a high-resolution GLC equipped with electron-capture detector (ECD) and nitrogen-phosphorous detector (NPD). A total of 196 pesticides, which were previously classified into 5 groups each for ECD and NPD based on their retention behaviors on the capillary column and responses to the detector, were subjected to the recovery experiment. In compliance with the analytical criteria, 70 to 120% of recovery and less than 20% relative standard deviation, the proposed method could be successfully applied to analyze 136 and 133 pesticide residues in apples and pears, respectively, which enabled not only rapid screening but quantitation of the residues. Even though less reliability was resulted from unacceptable recovery range, rest of pesticides including 43 and 45 analytes in apples and pears, could be also detected for their identity. The proposed method, failed to cover 17 and 18 pesticides for apples and pears, which mostly showed high polarity or heat-lability but, could be suitable for fast surveilance or monitoring of fruit harvests.

A Multiresidue Analysis Method of Unregistered Pesticides in Korea for Brown Rice and Orange by Gas Chromatography

Young-Hwan Jeon,Hyo-Young Kim,Jeong-In Hwang,Ji-Hwan Kim,Ji-Woon Ahn,Jung-Ah Do,Moo-Hyeog Im,Jae-Ho Oh,Ki-Sung Kwon,Joong-Keun Lee,Young-Deuk Lee,Jang-Eok Kim 한국농약과학회 2011 한국농약과학회 학술발표대회 논문집 Vol.2011 No.11

A Multiresidue Method for Determining 22 Unregistered Oragnophosphorus Pesticides in Brown Rice and Orange

Young-Hwan Jeon,Hyo-Young Kim,Jeong-In Hwang,Ji-Hwan Kim,Ji-Woon Ahn,Jung-Ah Do,Moo-Hyeog Im,Jae-Ho Oh,Ki-Sung Kwon,Joong-Keun Lee,Young-Deuk Lee,Jang-Eok Kim 한국농약과학회 2012 한국농약과학회 학술발표대회 논문집 Vol.2012 No.4

Development of an advanced external fixation device for rat femur defect

Oh, Deuk Young,Choi, Jang-Youn,Kim, Ki Joo,Park, Jung Hun,Cho, Dong-Woo,Rhie, Jong Won 한국조직공학과 재생의학회 2015 조직공학과 재생의학 Vol.12 No.3

Java 프로그래밍에서 단일 루프 구조의 병렬성 검출

황득영(Hwang Deuk Young),권오진(Kwon Oh Jin),최영근(Choi Young Keun) 한국정보처리학회 1998 정보처리학회논문지 Vol.5 No.7

The loop is a fundamental for exploiting parallelism as it has a large portion of execution time for sequential Java program on the parallel machine. This paper proposes the method of exploiting the implicit parallelism through the analysis of data dependence in the existing Java programming language having a single loop structure. The parallel code generation method through the restructuring compiler, and the method of translating Java source program into multithread statement, which is supported in the level of the Java programming language, are proposed here. The performance test of the program translated into the thread statement is conducted using the trip count of loop and the thread count as parameters. The restructuring compiler makes it possible for users to reduce overhead and exploit parallelism efficiently in the Java programming.

병렬성 검출을 위한 C + + 클래스 설계 및 종속성 분석

황득영(Hwang Deuk Young),권오진(Kwon Oh Jin),최영근(Choi Young Keun) 한국정보처리학회 1998 정보처리학회논문지 Vol.5 No.6

For the parallel execution of C program it is required for the restructuring compiler to collect summary information generated by function calls. It is not so easy to find summary information between called method and extract parallelism for using object reference parameters and returning object reference method. This paper presents an annotation mechanism which helps the parallelization of a sequential C program. GERINFO and SEQ clauses are adopted, respectively, to describe parallel and sequential relations between methods within a C class interfaces. Explicit parallel information being provided, a restructuring compiler then proceeds an efficient program parallelization. Parallel code translator converting C program into parallel code is implemented using the dependence analysis method described in this paper.