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허지혜,김형욱,김영대,이영호,김남수,설인준,김상우 인제대학교 2006 仁濟醫學 Vol.27 No.-
Objective : We analyzed and investigated clinical manifestations, laboratory tests, and inhibitor development of hemophilia that had not been thoroughly studied. Methods : We retrospectively reviewed 96 patients with hemophilia who were registered in the Hanyang University hospital from Jan, 1984 to Dec, 2003, Results : The total patients, whose median age at onset was 46.0 months, in clude 84 cases of type A (87.5%) and 12 cases of type B (12.5%). The most common chief complaint was a traumatic hemorrhage. The family histories of hemophilia were revealed in 41 cases (42.7%). The median activated partial thromboplastin time (aPTT) was 66.7 seconds. The number of severe cases was 39 (40.6%). Inhibitors were present in 13 cases (13.5%) and seven cases (53.8%) were high responders. aPTT and factor levels showed reverse correlation (r=-0.467). aPTT is more prolonged in group without family history than the group with family history (P=0.037). Conclusion : In this study, the diagnosis of hemophilia are made at the lower age and the serological positivity of the HCV is decreased. Activated partial thromboplastin time and factor levels shows reverse correlation. Activated partial thromboplastin time is more prolonged in group without family history compared with group with family history. The frequencies of family history are lower than those of other developed countries, because of concealing the family history of hemophilia. The prevalence of the development of inhibitors increased compared with those of previous studies in Korea, but was lower than those of other countries. Further studies would be necessary to decrease the inhibitor development.
金炯郁 弘益大學校 1981 弘大論叢 Vol.13 No.-
Maintenance theory based on the reliability engineering background is an important field in operations management areas. It is currently concerned with the mathematical modeling concept to deal with the complex and realistic problems. Our main interest is on the schematic technique to solve more serious, analytical difficulties which can't be easily approached with a simple mathematical analysis; it can meet with the sirmulation technique-specially designed simulation model is useful to this purpose. Here will be presented the GPSS simulation language to analyze transportation equipment maintenance problems which can give an intuitive philosophical idea to this area. Ⅰ. 序 論 Ⅱ. 本 論 1. 問題의 提起 2. 시뮬레이션을 위한 接近 3. 變數 및 Table의 定義 4. 시뮬레이션 흐름圖表 5. 컴퓨터 프로그램 6. 結果의 分析 Ⅲ. 結 論 Maintenance theory based on the reliability engineering background is an important field in operations management areas. It is currently concerned with the mathematical modeling concept to deal with the complex and realistic problems. Our main interest is on the schematic technique to solve more serious, analytical difficulties which can't be easily approached with a simple mathematical analysis; it can meet with the sirmulation technique-specially designed simulation model is useful to this purpose. Here will be presented the GPSS simulation language to analyze transportation equipment maintenance problems which can give an intuitive philosophical idea to this area.
포오트폴리오의 成果分析에 관한 硏究 : 證券投資信託 分析을 中心으로
金建浩,金炯郁,金喆中 홍익대학교 경영연구소 1984 경영연구 Vol.8 No.-
Ⅰ. Introduction The performance evaluation of portfolio should try to access whether the right assets were chosen at the right time and how well these assets were diversified. The purpose of this paper is to explain the issues about the performance evaluation of portfolio, and to analyze the Security Investment Trust in Korea. For this purpose, first I studied the capital market theory and the theory of portfolio performance evaluation model derived from the CAPM. Second, I selected 16 stock-typed in vestment trust funds and used several models. (Fama, Sharpe, Treynor and jensen's). Ⅱ. Models and sampling. Model 1 : Fama's Excess Return=γ-_p-γ-_f. Model 2 : Sharpe's Index(RVAR)=γ-_p-γ-_f/σ_p Model 3 : Treynor's Index (RVOL)=γ-_p-γ-_f/b_p Model 4 : Jensen's Measure(α) γ-_p-γ-_f=α_i+β_p(γ-_m-γ-_f)+e_i For the empirical test, 16 stock-typed investment trust funds are selected. Time span of each date (γ-_p,γ-_m,γ-_f) is one week from Jan. 1981 to Jun. 1984. Ⅲ. Results From the regression output, Ⅰ found the following results. ①Unsystematic risk of trust funds is more than systematic risk. But fund managers have been diversified better than common investors. ② The abnormal performance results calculated for all funds during the research period indicate that the mutual funds had performance on a gross return basis. ③ Our funds have no significant relations between their performance and betas. But these results may be corrected when we take account of average dividend ratio of market and transaction costs.