강판전단벽 거동의 실험적 기초 연구

황성래,곽재혁,김원기,박홍근,전상우 대한건축학회 2003 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.23 No.2(구조계)

Generally, shear wall system appears to resist the lateral loads, because high-rise buildings require satisfaction of building drift limit due to lateral loads. However shear wall system used mostly concrete, in this paper steel plate shear wall use to resist the lateral loads instead of reinforced concrete wall system. But, there is lack of research and understanding of steel plate shear wall system so that no real building of such system exists in Korea. This paper demonstrates stability and serviceability of steel plate shear wall by preliminary experimental test.

고립성 폐 결절로 나타난 경화성 혈관종의 폐엽 절제술에 의한 치험 1예 : A case report

황은구,이송암,황재준,김상윤,권혁중,김요한 건국대학교 의과학연구소 2004 건국의과학학술지 Vol.13 No.-

Patient was sixty-eight years old female. She was transferred to our department to resect the solitary pulmonary nodule on right lower lobe. Intraoperative frozen-section revealed bronchioloalveolar carcinoma. So, we performed right lower lobectomy and mediastinal lymph node dissection. Permanent pathologic diagnosis of this patient was sclerosing hemangioma. We report experience of treatment of sclerosing hemagioma presenting solitary pulmonary nodule by lobectomy with the review of literatures.

헬리컬관외 침전 및 적하 열전달 특성에 관한 연구

황승기,윤상국,김동혁,이승갑 韓國海洋大學校 附設 海洋科學技術硏究所 2001 硏究論文集 Vol.10 No.2

An experimental study is carried out to investigate the cahracteristics of heat transfer of outside helical tubes. The main heat exchanger consists of twelve curved columns with each 300mm diameter and the total length of 1.2m copper tube having an outer diameter of 19.05mm with 1.5mm thickness. Water flows down the outside of helical tube, where flow patterns are the vertical film falling flow, immerged flow, and mixed-flow which is the combination of film falling flow and immerged flow. Refrigerant 11 flows the inside of the tub countercurrently. The experimental range of inside flow rate is 1.7∼3.2ℓ/min. The results are presented as Nusselt number with corresponding Reynolds number for variety of outside and inside flow rates. The heat transfer rates of the mixed flow are 8 to 56% higher than those of film falling flow or immerged flow only. Interpretation of the results is given on the basis of physical reasoning and the correlation equations.

모티리움 엠정(말레인산돔페리돈 12.72 mg)에 대한 한미 돔페리돈정의 생물학적 동등성

곽손혁,우종수,황성주 충남대학교 약학대학 의약품개발연구소 2002 藥學論文集 Vol.17 No.-

Bioequivalence of two domperidone maleate tablets, test drug (Hanmi Domperidone^ⓡ tablet: Hanmi Pharmaceutical Co.) and reference drug (Motilium-M^ⓡ tablet: Jassen Korea Pharm. Co.), was evaluated according to the guidelines of Korea Food and Drug Administration (KFDA). Twenty four healthy male volunteers were divided randomly into two groups and administered the drug orally at the dose of 20㎎ as domperidone in a 2×2 crossover study. There was a week washout period between administrations. Blood samples were taken at predetermined time intervals for 48hr and the plasma concentration of domperidone was determined by a HPLC method. AUC_0-48hr (area under the plasma concentration-time curve from time zero to 48hr), C_max (maximum plasma drug concentration) and T_max, (time to reach C_max) were estimated from the plasma drug concentration-time data. Analysis of variance (ANOVA) revealed no difference in AUC_0-48hr, C_max and T_max between two products. The apparent differences of these parameters between two products were less than 20% (i.e., 1.047, -0.416 and 9.347% for AUC_0-10hr, C_max and T_max, respectively). The powers (1-β) for AUC_0-48hr, C_max and T_max were over 0.99. Minimal detectable differences (Δ) at α=0.05, 1-β=0.8 were less than 20% (i.e. 11.15, 10.21 and 18.13% for AUC_0-10hr, C_max and T_max respectively). The 95% Confidence intervals (δ) for these parameters were also within ±20% (i.e. -5.49≤δ≤7.58, -6.39≤δ≤5.57 and -1.28≤δ≤19.95 for AUC_0-10hr, C_max and T_max, respectively). These results satisfied the criteria of KFDA guidelines for bioequivalence, indicating the two tablets of domperidone maleate were bioequivalent.

티로파 정(염산티로프라미드 100 mg) 에 대한 안티모딕정의 생물학적 동등성

곽손혁,구선회,린팜두안,강종성,황성주 충남대학교 약학대학 의약품개발연구소 2000 藥學論文集 Vol.16 No.-

Bioequivalence of two tiropramide tablets, test drug (Antimodic® tablet: Chong Kun Dang Pharm. Co.) and reference drug (Tiropa® tablet: Dae Woong Pharm. Co.), was evaluated according to the guidelines of Korea Food and Drug Administration (KFDA). Twenty healthy male volunteers were divided randomly into two groups and administered the drug orally at the dose of 100 mg as tiropramide hydrochloride in a 2×2 crossover study. There was a week washout period between administrations. Blood samples were taken at predetermined time intervals for 10 hr and the plasma concentration of tiropramide HCl was determined by a GC/MS method. AUC_0-10hr (area under the plasma concentration-time curve from time zero to 10 hr), C_max (maximum plasma drug concentration) and T_max (time to reach C_max) were estimated from the plasma drug concentration-time data. Analysis of variance (ANOVA) revealed no difference in AUC_(0-10hr), C_max and T_max between two products. The apparent differences of these parameters between two products were less than 20% (i.e., 0.043, 6.430 and 8.929% for AUC_(0-10hr), C_max and T_max, respectively). The powers (1-β) for AUC_(0-10hr) and C_max were over 0.9. Minimal detectable differences (Δ) at α=0.05, 1-β=0.8 were less than 20% (i.e. 15.71 and 12.53% for AUC_(0-10hr) and C_max, respectively). The 90% confidence intervals (δ) for these parameters were also within ±20% (i.e. -9.15≤δ≤9.24 and -0.90≤δ≤13.77 for AUC_(0-10hr) and C_max, respectively). These results satisfied the criteria of KFDA guidelines for bioequivalence, indicating the two tablets of tiropramide were bioequivalent.

도로 정보 자동 인식 알고리즘 개발

정성혁,황창섭,이재기 충북대학교 건설기술연구소 2002 建設技術論文集 Vol.21 No.2

Recently, many studies extracting the geography information using digital aerial image have been implemented. But it is very difficult to recognize objects automatically from the aerial image using edge detection method, and so that work for recognition has practiced manually or semi-automatically. Therefore, in this study, we have removed impedimental elements for recognition using the image which overlapped the significant information bands of brightness-sliced aerial images, then have developed the algorithm which can automatically recognize and extract road information. And we will try to apply that method when we develop a system. For this, first of all, we have developed the "template conformal-transformation moving operator" for automatically recognizing crosswalk area from crosswalk band image and the "window normal search algorithm" which is able to track road area based on long-side length of crosswalk. So, we have proposed the method that can extract directly the road information from the aerial image.

일반 교육-특수교육 완전 통합을 위한 기초 연구 : 탐구조사 An Exploratory Study

권상혁,황윤한 국립특수교육원 1995 특수교육연구 Vol.2 No.-

Total integration is the most ethical and humanistic way of teaching exceptional children. The purpose of this study were 1) to examine the problems in special education, 2) to investigate the reasons for being unable to integrate exceptional children with their non-handicapped peers, and 3) to obtain suggestions to accentuate total integration recommended by special education teachers. Thirty-seven elementary school special education teachers participated in this study. Problems in special education practice pointed by special education teachers vary from the lack of perceptions of educational leaders, teachers, students, and students to the education of quality special education teachers. Reasons for being unable to integrate exceptional children with their non-handicapped peers were also related to the problems in current special education culture. Special education teachers suggested various ways to accentuate total integration.

프레팔시드정(시사프리드 5 mg)에 대한 시사컨시드정의 생물학적 동등성

곽손혁,구선회,황성주 충남대학교 약학대학 의약품개발연구소 2000 藥學論文集 Vol.16 No.-

Bioequivalence of two cisapride tablets, test drug (Cisaconsid® tablet: Hankook Nelson Pharm Co.) and reference drug (Prepulsid® tablet. Yansen Pharm. Co.), was evaluated according to the guidelines of Korea Food and Drug Administration (KFDA). Eighteen healthy male volunteers were divided randomly into two groups and administered the drug orally at the dose of 10 mg as cisapride in a 2×2 crossover study. There was a week washout period between administrations. Blood samples were taken at predetermined time intervals for 36 hr and the plasma concentration of cisapride was determined by a HPLC method. AUC_(0-36hr) (area under the plasma concentration-time curve from time zero to 36 hr), C_max (maximum plasma drug concentration) and T_max (time to reach C_max) were estimated from the plasma drug concentration-time data. Analysis of variance (ANOVA) revealed no difference in AUC_(0-36hr), C_max and T_max between two products. The apparent differences of these parameters between two products were less than 20% (i.e., 2.23, 7.99 and 3.81% for AUC_(0-36hr), C_max and T_max., respectively). The powers (1-β) for AUC_(0-36hr), C_max and T_max were over 0.9. Minimal detectable differences (Δ) at α=0.10, 1-β=0.8 were less than 20% (i.e. 16.34, 13.81 and 17.99% for AUC_(0-36hr), C_max and T_max, respectively). The 90% confidence intervals (δ) for these parameters were also within ±20% (i.e. -13.21≤δ≤8.75, -17.27≤δ≤1.28 and -l5.93≤δ≤8.24% for AUC_(0-36hr), C_max and T_max, respectively). These results satisfied the criteria of KFDA guidelines for bioequivalence, indicating the two tablets of cisapride were bioequivalent.

진단검사의학과 검사건수에 영향을 미치는 요인 분석

정상혁,황기범,이혜진 이화여자대학교 의과대학 2004 EMJ (Ewha medical journal) Vol.27 No.1

Objective : The purpose of this study is investigating variables affecting the numbers of clinical laboratory tests. Method : Data about the number of clinical laboratory tests, hospital characteristics, and the number of patients between January 1999 and December 1999 was collected. Data resources were Statistical Yearbook, Standardization Audit by Korean Hospital Association and Internal Data Set of each hospital. Hospital characteristics were hospital ownership, tertiary care hospital, duration since opening, licensed hospital beds, the rates of medical inpatient and outpatient. Multiple regression analysis was applied to find factors affecting the number of clinical laboratory tests. Models for WBC, RBC, Hb, Hct, PLT, LDC, PT, PTT, AST, ALT, and GLU were statistically adequate. Results : As the results, hospital ownership, duration since opening, licensed hospital beds, the rate of medical outpatient were statistically significant. Private hospitals showed higher numbers than public hospitals, hospitals within 5 years since opening showed higher numbers than others. The licensed hospital beds was positively correlated with the numbers of the tests, whereas the rates of medical outpatient was negatively correlated. Conclusion : In conclusion, hospital characteristics affect the numbers of clinical laboratory tests. It could be a clue why the costs of medical services were different among medical facilities. 연구목적: 진단검사의학은 환자의 진료에 필수적인 요소로서 정확한 진단, 치료방향의 결정, 치료효과의 판정, 질병경과의 판단 및 예후 추정의 근거가 된다. 국내 의료기관에서는 혈액학적 검사, 미생물검사, 면역혈청검사, 면역혈액검사, 생화학검사, 기생충검사, 응급검사, 최근 효소법으로 대체되고 있는 방사성동의원소검사, 병리조직검사, 기타 특수검사 등 많은 검사를 시행하고 있다. 의료기관의 검사검수는 질병의 종류, 중증도 등에 따라 다를것으로 예상되나 검사건수에 영향을 미치는 요인을 설명하는 연구는 많지 않다. 병원의 특성은 병원의 지리적, 조직적 특성을 말하는 것으로 병원의 특성에 따라 환자의 종류 및 구성이 다르며 의료기관 종류, 진료시설, 장비수준, 관리운영상의 차이, 조직구성 등에 따라 진료비도 많은 영향을 받는다. 또한 의학기술 발달과 자동화로 인해 장비의 보유 및 사용에 의료기관이 특성이 반영될 수 있다. 이 연구에서는 의료기관의 특성이 진단의학과 검사건수의 변화에 어떠한 영향을 미치는지 알아보고자 하였다. 구체적으로 병원급 이상 의료기관의 진단검사의학과에서 발생하는 검사건수에 영향을 미치는 요인들과 그방향서을 분석하고자 하였다. 방법 : 199년 1월 1일부터 1999년 12월 31일까지의 진단검사의학과 검사건수, 각 병원별 특성, 환자 진료실적을 각 병원의 통계연보, 각 병원 표준화 심사자료, 각 병원 내부자료를 이용하여 수집하여 분석하였다. 병원조직의 특성 변수로는 설립구분, 종합전문요양기관 유무, 개설연도, 허가병상수를 선정하였고, 환자구성의 특성 변수로는 내과계 입원환자비율, 내과계 외래환자비율을 선정하였다. 검사건수는 대상 의료기관 전체에서 공토으로 시행하는 진단검사의학과의 16갖 검사항목에 대하여 분석하였다. 연구대상 의료기관의 병원특성 및 환자특성과 검사건수의 분포를 살펴보았으며 병원조직의 특성과 환자구성의 특성 변수에 대하여 t-검정 및 상관분석을 시행하여 검사건수와 관련성을 보이는 변수를 분석하였다. 검사건수에 영향을 미치는 요인들에 대하여 중회귀분석을 시행하여 16개 검사항목 중 WBC, RBC, Hb, Hct, PLT, LDC, PT, PTT, AST, ALT, GLU에 대하여 통계학적으로 타당한 모형을 구성하였다. 결과 : 1) WBC의 검사건수의 변화는 44.1%를 설명할 수 있었으며 민간병원에서, 허가병상수가 많을수록 통계학적으로 유의하게 검사건수가 증가하였고 내과계 외래환자비율이 높을수록 통계학적으로 유의하게 검사건수가 감소하였다. 2) RBC의 검사건수의 변화는 37.7%를 설명할 수 있었으며 민간병원에서 허가병상수가 많을수록 통계학적으로 유의하게 검사건수가 증가하였다. 3) Hb의 검사건수의 변화는 43%를 설명할 수 있었으며 민간병원에서 허가병상수가 많을수록 통계학적으로 유의하게 검사건수가 증가하였고 내과계 외래환자비율이 높을수록 통계학적으로 유의하게 검사건수가 감소하였다. 4) Hct의 검사건수의 변화는 39.8%를 설명할 수 있었으며 민간병원에서 허가병상수가 많을수록 통계학적으로 유의하게 검사건수가 증가하였고 내과계 외래환자비율이 높을수록 통계학적으로 유의하게 감소하였다. 5) PLT의 검사건수의 변화는 73.7%를 설명할 수 있었으며 민간병원에서 허가병상수가 많을수록 통계학적으로 유의하게 검사건수가 증가하였고 내과계 외래환자 비율이 높을수록 통계학적으로 유의하게 감소하였다. 6) PT의 검사건수의 변화는 52.0%를 설명할 수 있었으며 개설연도가 5년 이하인 병원에서, 하거병상수가 많을수록 통계학적으로 유의하게 검사건수가 증가하였고 내과계 외래환자비율이 높을수록 통계학적으로 유의하게 감소하였다. 7) PTT의 검사건수의 변화는 37.5%를 설명할 수 있었으며 허가병상수가 증가할수록 검사건수는 통계학적으로 유의하게 증가하였다. 8) AST의 검사건수의 변화는 39.1%를 설명할 수 있었으며 허가병상수가 증가할수록 검사건수는 통계학적으로 유의하게 증가하였고 내과계 외래환자비율이 높을수록 통계학적으로 유의하게 감소하였다. 9) ALT의 검사건수의 변화는 41.0%를 설명할 수 있었으며 허가병상수가 증가할수록 검사건수는 통계학적으로 유의하게 증가하였고 내과계 외래환자비율이 높을수록 통계학적으로 유의하게 감소하였다. 10) GLU의 검사건수의 변화는 25.8%를 설명할 수 있었으며 민간병원에서 통계학적으로 유의하게 검사건수가 높았고 내과계 외래환자비율이 높을수록 통계학적으로 유의하게 감소하였다. 결론 : 이상의 결과를 종합하면 검사종류에 따라 차이가 있으나 설립구분, 개설연도, 허가병상수, 내과계 외래환자비율에 따라서 검사건수에 통계학적으로 유의한 영향을 미친다고 볼 수 있다. 공공병원에 비하여 민간병원에서, 설립한 지 5년이 지난 병원에 비해 5년 이내인 병원에서 검사건수가 많고 허가병상수가 많을수록 검사건수가 증가하며 내과계 외래환자비율이 높을수록 검사건수는 감소한다. 이 연구결과에서 의료기관의 특성이 진단으학과 검사건수에 영향을 미치는것을 알 수 있었다. 검사비용은 진료비에서 큰 비중을 차지하고 있으므로 검사비용의 발생에 영향을 미치는 요인을 밝히는 것은 진료비 관리 방안 개발에 중요할 것으로 판단된다. 향후에는 보다 다양한 의료기관에 대해서 풍부한 자료를 바탕으로 진단검사 의학과 검사건수에 영향을 미치는 여러 요인들에 대한 분석이 이루어져 의료 서비스와 진료비 관리방안 개발에 기여할 수 있기를 바란다.

Coating을 시행한 뇌동맥류 파열환자의 예후

박종혁,석종식,목진호,박관,김영백,민병국,황성남,최덕영 대한신경외과학회 1995 Journal of Korean neurosurgical society Vol.24 No.6

In rare occasions in which aneurysmal neck clipping is nearly impossible, coating is employed. During the period from 1985 to 1992, 312 patients with aneurysm underwent surgery ; aneurysmal neck clipping were performed in 284 cases while coating only in 28. The reasons that coating was required were ; wide and broad neck in 13, perforators arising from the neck in 4, neck tearing during dissection in 3, very friable neck in 2, severe adhesion with surrounding structures in 3, and small aneurysm without enough room for clipping in 3. In twenty-three cases, cotton wisp and bioglue were used as coating materials. In another five cases, the aneurysmal wall was reinforced using Surgicel or Gelfoam. Patients were followed for 24 months on average of all the patients. Four had last contact Six died(4 due to rebleeding and 2 due to pneumonia). Fourteen were good and 4 were moderately disabled. There were no rebleeding incidences during first three months' follow-up after coating. We thus concluded that coating an aneurysm offers some protection from rebleeding, particularly when the rebleeding risk period is over.