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      • 한의진단명과 진단요건의 표준화 연구 II (표준화 실례) : 2차년도 연구결과 중간 보고

        양기상,최선미,최승훈,안규석,박경모,박종현,김성우,신승호,정우열,전병훈,고현,김정범,신상우,김성훈,김동희,권영규,엄현섭,장혜옥 한국한의학연구원 1996 한국한의학연구원논문집 Vol.2 No.1

        The diagnostic requirements were suggested and explained regarding the systems of differentiation of symptoms and signs in the second year study of standardization and unification of the terms and conditions used for diagnosis in oriental medicine. The systems were as follows; - differential diagnosis according to condition of body fluid, differentiation of syndromes according to the state of qi and blood, differential diagnosis according to relative excessiveness or deficiency of yin and yang(氣血陰陽津液辨證) - differentiation of diseases according to pathological changes of the viscera and their interrelation - analyzing and differentiating of febrile diseases in accordance with the theory of the six channels(傷寒辨證) The individual diagnosis pattern was arranged by the diagnostic requirements in the following order : another name(異名), notion of diagnosis pattern, index of differentiation of symptoms and signs(辨證指標), the main point of diagnosis, analysis of diagnosis pattern(證候分析), discrimination of diagnosis pattern(證候鑑別), a way of curing a diseases(治法), prescription(處方), herb in common use(常用藥物), diseases appearing the diagnosis pattern(常見疾病), documents(文獻調査). This study was carried out on the basis of the Chinese documents and references.

      • Hollow-Fiber LPME를 이용한 잔류농약 검출

        조현우,이상섭,신윤지,장미애 경기대학교 기초과학연구소 2008 기초과학논문집 Vol.21 No.-

        A method for the determination of trace amount of pesticides in aqueous samples using hollow fiber-liquid phase microextraction(HF-LPME) and capillary gas chromatograph/micro electron capture detector(GC/μ ECD) has been established. HF-LPME method has been optimized with respect to several experimental parameters including the effects of extraction solvent, extraction time and extraction temperature for the determination of pesticides from aqueous samples. The calibration curves for pesticides showed good linearity (above r²=0.98). The established method is feasible for the determination of trace amounts of pesticides in several aqueous sample. The limit of detection(LOD) and the limit of quantitation(LOQ) have been found to be 0.05~1.0 and 0.5~2.5 ng/mL, respectively. The established HF-LPME method for the analysis of pesticides from aqueous sample can be used for the determination of biological, food and environmental samples.

      • 순손실이 기업규모와 유효세율간의 관계에 미치는 영향 : 정치적 비용가설의 검증

        정문현,노현섭,김완섭 釜山大學校 商科大學 1997 釜山商大論集 Vol.68 No.-

        Effective Tax Rates(ETR) are a biased proxy of political success because they may contain a factor, losses(LOSS), attributable to firm's operating results and experience rather than to success in the political process. To estimate the indirect effect of LOSS, the path model with two structural equations is built to identify the links between firm size and effective tax rates mediated by LOSS, and the remaining direct link between firm size and effective tax rates. Variables in the structural equations are modeled by a latent-variable approach (measurement model). The path model and the measurement model are estimated by LISREL. The results of the path model indicate that a significant portion of the firm size/tax rate relation was attributable to the indirect effects of the loss. Since loss result mainly from firms' operating characteristics rather than firm's political environment, the use of total effect of firm size on tax rates in previous studies to test the association of firm size and political success may be biased and can lead to improper conclusions.

      • KCI등재후보

        마커 자동 인식 향상 방법에 관한 연구

        이현섭 한국운동역학회 2003 한국운동역학회지 Vol.13 No.1

        Lee, H-S. The study for improve a method of Marker auto-identification. Korean Joumal of Sport Biomechanics, Vol. 13, no. 1, pp. ???_???. The purpose of this study is to develop an improved marker auto-identification algorithm for reduce of data processing time through improve the efficiency of noise elimination and marker separation. The maker auto-identification algorithm was programming named KUMAS used Delphi language. For the study, various experiments were conducted for the verification of KUMAS. and compared two systems of established with the KUMAS. Four different motions - cycling, gait, rotation, and pendulum - , were selected and tested. Motions were filmed 30Hz rate per second. x^2-test used for statistical analysis. Significant level were α= .05. The test results were as follow. 1. Increased the success ratio of marker auto-identification. 2. The efficiency of marker auto-identification was remarkably improved through marker separation, noise elimination. 3. The marker auto- identification ability was improved in 2D-image plane include the 3D motion. 4. Significant different were found between KUMAS and B-SYS(established system) with non-input the artificial noise frames, input the artificial noise frames and total frames.

      • KCI등재후보

        채용시 건강진단에서 요ㆍ천추부 단순 방사선 검사의 평가

        임현술,김수군,김덕수,이현경,최대섭 대한산업의학회 2000 대한직업환경의학회지 Vol.12 No.2

        Objectives : A study was conducted for investigating the status of simple X-rays on lumbo-sacral regions at pre-employment health examination and analysing the effectiveness of simple X-rays on lumbo-sacral regions. Methods : The study data were pre-employment health examination data in a university hospital from Jan 3, 1993 through October of 1997. And, 97 newly employed workers who claimed no low back pawn at pre-employment health examination of a certain company were follow-up survey about low back pain and related factors in April, 1995 and October of 1997. The data were collected by a self-reported questionnaire and a medical examination with a rehabilitation specialist. Results : 1. Taking the simple X-rays on lumbo-sacral regions was 1,591 workers (10.5%) among 15,166 pre-employment health examination from Jan 3, 1993 through October of 1997. And yearly application rates of these X-ray tests have been significantly statistical increasing (p〈0.01). 2. The abnormal findings of simple X-rays on lumbo-sacral regions at pre-employment health examination were 40 workers. But, there was not significantly statistical difference between normal and abnormal group for the complaint rate of low back pain. 3. The number of case with symptoms of low back pain at the follow-up survey were 46, so The incidence density was 37.1 persons/ 100 person-years. And the incidence density was not significantly statistical difference between normal and abnormal group of simple X-rays on lumbo-sacral regions. 4. Through the multivariate logistic regression, significantly associated factors with low back Pain were found to be tenure(OR=0.36, 95%CI : 0.17-0.79), lifting of heavy materials (OR=5.86, 95%CI : 1.58-21.74) . Conclusion : The simple X-rays on lumbo-sacral regions at pre-employment health examination is required further research for utilizing pre-employment health examination according to above results.

      • KCI등재후보

        DLT를 이용한 3차원 공간검증시 RMSE에 대한 통계학적 분석

        이현섭,김기형 한국운동역학회 2003 한국운동역학회지 Vol.13 No.1

        Lee, H-S, and Kim, K-H. Statistical analysis for RMSE of 3D space calibration using the DLT. Korean Journal of Sport Biomechanics, Vol. 13, N. 1, pp.1-12 The purpose of this study was to design the method of 3D space calibration to reduce RMSE by statistical analysis when using the DLT algorithm and control frame. Control frame for 3D calibration was consist of 1×3×2m and 162 contorl points adhere to it. For calculate of 3D coordination used two methods about 2D coordination analysis used one-wat ANOVA and T-test. Significant level was α= .05. The compose of methods for reduce RMSE were as follow. 1. Use the control frame composed of 24-44 control points arranged equally. 2. When photographing, locate control frame to center of image plane(image frame) or use the lens of a few distortion. 3. When calculate of 3D coordination, use mean of 2D coordinate obtainable from all image frames.

      • 비모형화 동특성을 고려한 로보트 매니플레이터의 실시간 적응제어

        한성현,김휘동,이진,이현철,이희섭 경남대학교 신소재연구소 1994 論文集 Vol.4 No.-

        기존의 로봇 매니퓰레이터의 제어방법들을 간단한 고전적 제어방법들의 응용은 가능하지만, 고속운전이나 빈번한 부하변동에 의해 역학적으로 나타나는 각 관절사이의 연성(coupling), 관성파라미터의 불확실성, 모델링오차 등으로 인하여 로봇 제어기의 성능과 응용범위등은 큰 제약을 받게 된다. 본 연구에서는 제어기의 예측불허의 외란 및 파라미터의 불확실성 등에 대한 적응성의 향상을 위하여 적응 모델추종제어기법을 적용하여 로봇 매니퓰레이터 동적모델에서의 매개변수의 불확실성 및 미지의 외란, 존재, 갑자스런 부하변동에서도 좋은 제어성능이 유지 될 수 있는 견실한 로봇 관정 제어방식에 대한 연구를 중점으로 다룬다. 적응제어알고리즘은 초안정도(hyperstability)이론과 적응 모델 추종 제어의 원리를 바탕으로 유도되었고, 적응 제어기의 기온구조를 비선형성의 보상을 위한 내부루프의 MRAC구조와 고정된 게안을 갖는 외부루프와 PID제어기의 조합으로 구성되는 혼성구조의 제어기를 제언한다. In this paper, robust adaptive control approach is presented to inplement of the real time control of the industrial robot manipulator. The purpose of proposed adaptive control scheme is to achieve good tracking performance of desired trajectory tracking of joint position and veloeity under the existence of the payload variation and uncertinity of inertia parameter. The feedback gains of the controller are updated and adaptied in each sampling time to achieve the desired control performance. The proposed adaptive control algorithm is developed within the framework of adaptive model following control scheme using the Lyapunov direct method. To illustrate the performance of the proposed adaptive controller, simulation test is performed in the presence of the parameter uncertainties and payload variations.

      • ELISA 방법에 의한 홍색비유황광합성세균의 Lipopolysaccharides 사이의 혈청학적 유연관계

        이상섭,이현순 성균관대학교 기초과학연구소 1989 論文集 Vol.40 No.2

        홍색비유황광합성균의 lipopolysaccharide에 대한 혈청학적유연관계가 enzyme-linked immunosorbent assay 방법에 의해 조사되어졌다. Rhodobacter capsulatus는 Rhodopseudomonas palustris, Rhodobacter sphaeroides와 혈청학적 유연관계가 있는 것으로 나타났고, Rhodopseudomonas palustris는 Rhodopseudomonas viridis와 유연관계가 있는 것으로 나타났다. Rhodospirillum rubrum과 Rhodocyclus tenuis는 어느 종과도 혈청학적 유연관계가 없는 것으로 나타났다. The serological relationships among lipopolysaccharides from purple nonsulfur photosynthetic bacteria, 4 genera, 11 species, was investigated by enzyme-linked immunosorbent assay. Rhodobacter capsulatus showed serological relationship with Rhodopseudomonas palustris and Rhodobacter sphaeroides. Rhodopseudomonas palustris showed serological relationship with Rhodopseudomonas viridis but Rhodospirillum rubrum and Rhodocyclus tenuis didn't show serological relationship with other species.

      • 行列多項式 Liapunov 函數 構成에 依한 誘導電動機의 安定度 解析

        李鉉雨,黃有燮,李浚析,文在星 慶南大學校 附設 工業技術硏究所 1988 硏究論文集 Vol.6 No.-

        非線形 시스템을 나타내는 狀態空間의 動特性 모델로부터, 定常狀態 값들이 알려지면, 行列多項式에 依해, Scalar Type의 Liapunov 函數를 構成하고 이를 誘導電動機의 安定解析에 適用시킨다. 線形 시스템에 對한 Liapunov 函數의 構成法은 잘 알려져 있으나, 非線形 시스템의 Liapunov 函數 構成法은 아직 體系化되어 있지 못하다. 따라서, 本 論文에서는, 從來의 定常狀態 附近에서의 Taylor 展開에 依한 線形化 技法에 依存하지 않고, 非線形性을 나타내는 項을 分離하여, 行列變換시킴으로서, 線形시스템의 Liapunov 函數 構成法을 살리고, 非線形性이 强한 誘導電動機의 狀態空間모델에 適用시켰다. 그 結果, 求해진 安定領域은, 線形化에 依한 것보다는 훨씬 넓은 5次元의 超空間으로 表現되는 誘導電動機의 漸近安定領域이 되었다. In this paper, when the steady state values for multidimensional and nonlinear Dynamic Models of State Space Representations are given, Liapunov functions of scalar types using matrix quadratic polynomials are constructed by Special Matrix Transformation Techniques and are applied to Stability Analysis of Induction Motors. Futhermore, Liapunov function construction precedures for linear systems can be specified in detail. But, unfortunately, for nonlinear systems, there are no the complete construction techniques. In this paper, differently from conventional methods using Linearization obtained from Taylor series expansions about steady state operating points. Linear terms and nonlinear ones are individually seperated, and by special matrix transformation techniques, similiar construction procedurs such as in the cases of linear systems, are introduced, and are applied to Stability Analysis of Induction Motor. The hyperspaces of multidimensional stability region, obtained from these techniques, were larger than the obtained ones from conventional linearlization techniques about equilibrium points and were assured to be Asymptotic Stability Region ensuring the stable operation of Induction Motor.

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