• 제목/요약/키워드: effective models

검색결과 3,295건 처리시간 0.035초

Protective Effect of Decursinol on Mouse Models of Sepsis: Enhancement of Interleukin-10

  • Jung, Jun-Sub;Yan, Ji-Jing;Song, Dong-Keun
    • The Korean Journal of Physiology and Pharmacology
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    • 제12권2호
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    • pp.79-81
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    • 2008
  • The effects of decursinol on various models of sepsis were investigated. Intra-peritoneal pretreatment of mice with various doses of decursinol ($1{\sim}100$ mg/kg) effectively suppressed lethality induced in three mouse models of experimental sepsis, i.e., lipopolysaccharide (LPS)/D-galactosamine (GalN), high-dose LPS (20 mg/kg), and cecal ligation and puncture (CLP). Intra-peritoneal pretreatment of mice with decursinol (50 mg/kg) markedly enhanced the LPS/GalN -induced increase of plasma interleukin-10 (IL-10) levels, without affecting plasma TNF-${\alpha}$, IL-6 and IL-12 levels. These results suggest that decursinol could be effective for prevention or treatment of sepsis.

EMTP MODELS를 이용한 전기철도 FACTS 설비의 제어 구현 연구 (A Study on control realization of FACTS equipment in Electric Railway Systems using EMTP MODELS)

  • 오민혁;이병하
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년도 제37회 하계학술대회 논문집 A
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    • pp.329-330
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    • 2006
  • The purpose of this paper is to compensate the voltage drop of the power system in the AC Electric Railway Systems. Reactive power compensation is often the most effective way to improve system voltage drop. The suitable modeling of the electric railway system should be applied to the EMTP. the dynamic characteristics of 3-Phase Induction Motor in Electric Railway Systems is considered for precise modeling. it is shown through EMTP simulation using EMTP MODELS that voltage drop can be compensated effectively by STATCOM.

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감자역병 예측모델을 위한 맞춤통보용 방제모듈 개발에 대한 고찰 (Development of customized control modules for the model forecasting the occurrence of potato late blight)

  • 심명선;임진희;김점순;유성준
    • 농업과학연구
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    • 제41권1호
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    • pp.23-27
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    • 2014
  • Potato late blight occurrence is caused by various environmental factors, and the progress can be regularly predicted so that several predictive models have been developed. The models predict the timing of the disease occurrence, but they do not include the methods of the disease control. Effective fungicide control, economic threshold, prediction models were investigated in the study to reflect on customized control modules for the model forecasting the occurrence of potato late blight.

고추역병 예측모델을 위한 맞춤통보용 방제모듈 개발에 대한 고찰 (Development of customized control modules for the model forecasting the occurrence of phytophthora blight on hot pepper)

  • 심명선;임진희;김점순;유성준
    • 농업과학연구
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    • 제41권1호
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    • pp.29-34
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    • 2014
  • Phytophthora blight occurrence is caused by various environmental factors, and the progress can be regularly predicted so that several predictive models have been developed. The models predict the timing of the disease occurrence, but they do not include the methods of the disease control. Effective fungicide control, control threshold, prediction models were investigated in the study to reflect on customized control modules for the model forecasting the occurrence of Phytophthora blight on hot pepper.

콘크리트의 유동성에 미치는 타설진동의 영향 (Effects of Internal Vibration on Flowability of Fresh Concrete)

  • 최수경
    • 콘크리트학회논문집
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    • 제12권3호
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    • pp.77-85
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    • 2000
  • Various concretes are used for construction works depending on the types of structure, building element and method of construction. An internal vibration work is one of the important processes for adequately pouring various concrete into a certain form. This study was undertaken to find out the effects of internal vibration on flowability of fresh concrete by concrete flow test under eight conditions of vibration. Presumable equation models also were created to show all vibration effects without regard to kinds of concrete. As the results of this study, the degree of vibration effects were varied according to the properties of concrete. Acceleration amplitude of vibration that applied to fresh concrete was effective value of the properties of vibration in a viewpoint of flowability. Moreover, This research presents the presumed equation models including variables created by acceleration amplitude and measuring value of vibrated concrete flow test. These models are presumable methods of vibration effects regardless of kinds of concrete.

저유량 특성을 고려한 사류 송풍기의 성능 해석 (Performance analysis of mixed-flow fans considering the low flow characteristics)

  • 오형우;김광용
    • 유체기계공업학회:학술대회논문집
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    • 유체기계공업학회 2000년도 유체기계 연구개발 발표회 논문집
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    • pp.110-115
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    • 2000
  • The mean streamline analysis using the empirical loss correlations has been developed for performance prediction of industrial mixed-flow fan impellers in the present study. New simple, but effective, models for the additional Euler input work characteristic and an internal recirculation loss due to internal flow reversal under the low flowrate conditions are proposed in this paper. Comparison of overall performance predictions with six sets of test data of mixed-flow fans is accomplished to demonstrate the accuracy of the proposed models. Predicted performance curves by the present set of loss models agree fairly well with experimental data for a variety of mixed-flow fan impellers over the entire operating conditions. The prediction method presented herein can be used efficiently in the conceptual design phase of mixed-flow fan impellers.

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Evaluating the progenitor cells of ovarian cancer: analysis of current animal models

  • King, Shelby M.;Burdette, Joanna E.
    • BMB Reports
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    • 제44권7호
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    • pp.435-445
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    • 2011
  • Serous ovarian cancer is one of the most lethal gynecological malignancies. Progress on effective diagnostics and therapeutics for this disease are hampered by ambiguity as to the cellular origins of this histotype of ovarian cancer, as well as limited suitable animal models to analyze early stages of disease. In this report, we will review current animal models with respect to the two proposed progenitor cells for serous ovarian cancer, the ovarian surface epithelium and the fallopian tube epithelium.

실내 공간 형상화를 위한 아이디어 표현 방법에 관한 연구 (A Study on Presentation Methods for Formation Ideas of Interior Spaces)

  • 이종란
    • 한국디지털건축인테리어학회논문집
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    • 제6권2호
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    • pp.17-23
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    • 2006
  • The purpose of this study was to investigate how student felt the strengths and shortness of presentation methods for formation of interior spaces. For this study, the process of the interior architecture design class was divided into three stages: the programming. the design development, and the design completion. In the design development stage, students used presentation methods: hand sketch, scale model, computer modeling, and virtual realty. The strengths of hand sketch was that quick expression. Models provided three-dimensional feelings. Computer modelling provide realistic color and texture. Virtual reality provided three-dimensional immersion and real scale. It is effective that students collect brain storm images using quick hand sketch in the beginning of design development stage. After that, they compose interior spaces in study models with small scale. Watching the models, they design details of spaces by using hand sketch and computer modelling. Using virtual reality, they can check the scale and circulation. Finally, they complete computer modelling by texture mapping and check the final design in virtual reality.

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조명 시뮬레이션을 위한 측광데이터의 생성과 적용 (A Study on the Generation and Application of Photometric Data for Lighting Simulation)

  • 홍승대
    • 한국디지털건축인테리어학회논문집
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    • 제6권2호
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    • pp.25-30
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    • 2006
  • The purpose of this study was to investigate how student felt the strengths and shortness of presentation methods for formation of interior spaces. For this study, the process of the interior architecture design class was divided into three stages: the programming. the design development, and the design completion. In the design development stage, students used presentation methods: hand sketch, scale model, computer modeling, and virtual realty. The strengths of hand sketch was that quick expression. Models provided three-dimensional feelings. Computer modelling provide realistic color and texture. Virtual reality provided three-dimensional immersion and real scale. It is effective that students collect brain storm images using quick hand sketch in the beginning of design development stage. After that, they compose interior spaces in study models with small scale. Watching the models, they design details of spaces by using hand sketch and computer modelling. Using virtual reality, they can check the scale and circulation. Finally, they complete computer modelling by texture mapping and check the final design in virtual reality.

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Partial Pole Assignment via Constant Gain Feedback in Two Classes of Frequency-domain Models

  • Wang, Guo-Sheng;Yang, Guo-Zhen;Duan, Guang-Ren
    • International Journal of Control, Automation, and Systems
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    • 제5권2호
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    • pp.111-116
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    • 2007
  • The design problem of partial pole assignment (PPA) in two classes of frequency-domain MIMO models by constant gain feedback is investigated in this paper. Its aim is to design a constant gain feedback which changes only a subset of the open-loop eigenvalues, while the rest of them are kept unchanged in the closed-loop system. A near general parametric expression for the feedback gain matrix in term of a set of design parameter vectors and the set of the closed-loop poles, and a simple parametric approach for solving the proposed problem are presented. The set of poles do not need to be previously prescribed, and can be set undetermined and treated together with the set of parametric vectors as degrees of design freedom provided by the approach. An illustrative example shows that the proposed parametric method is simple and effective.