• 제목/요약/키워드: Validate

검색결과 5,902건 처리시간 0.033초

1차원 기체-고체 반응기 모델의 로터리킬른 환원로 적용 (Simplified 1-Dimensional Model of Gas-Solid Reactor : Adapting to Coal Reduction Rotary Kiln)

  • 한택진;최상민
    • 한국연소학회:학술대회논문집
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    • 한국연소학회 2012년도 제45회 KOSCO SYMPOSIUM 초록집
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    • pp.75-78
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    • 2012
  • Rotary kiln furnace is one of the most widely used reactors in industrial field. In this paper, 0-dimensional heat and mass balance for direct coal flame rotary kiln was performed preferentially, then a simplified 1-dimensional model was developed based on 0-dimensional analysis data to proceed additional thermal analysis. Compared the results with the currently operating rotary kiln data to validate 1-dimensional model. Through this procedure, it can help to derive fundamental idea for design and operation of rotary kiln.

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AN UNCONDITIONALLY GRADIENT STABLE NUMERICAL METHOD FOR THE OHTA-KAWASAKI MODEL

  • Kim, Junseok;Shin, Jaemin
    • 대한수학회보
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    • 제54권1호
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    • pp.145-158
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    • 2017
  • We present a finite difference method for solving the Ohta-Kawasaki model, representing a model of mesoscopic phase separation for the block copolymer. The numerical methods for solving the Ohta-Kawasaki model need to inherit the mass conservation and energy dissipation properties. We prove these characteristic properties and solvability and unconditionally gradient stability of the scheme by using Hessian matrices of a discrete functional. We present numerical results that validate the mass conservation, and energy dissipation, and unconditional stability of the method.

A FOURTH-ORDER ACCURATE FINITE DIFFERENCE SCHEME FOR THE EXTENDED-FISHER-KOLMOGOROV EQUATION

  • Kadri, Tlili;Omrani, Khaled
    • 대한수학회보
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    • 제55권1호
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    • pp.297-310
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    • 2018
  • In this paper, a nonlinear high-order difference scheme is proposed to solve the Extended-Fisher-Kolmogorov equation. The existence, uniqueness of difference solution and priori estimates are obtained. Furthermore, the convergence of the difference scheme is proved by utilizing the energy method to be of fourth-order in space and second-order in time in the discrete $L^{\infty}-norm$. Some numerical examples are given in order to validate the theoretical results.

Adaptive Control of Multiplexed Closed Circuit Anesthesia

  • Jee, Gyu-In;Roy, Rob
    • 대한의용생체공학회:학술대회논문집
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    • 대한의용생체공학회 1992년도 춘계학술대회
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    • pp.79-81
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    • 1992
  • This paper describes the design of an adaptive closed circuit anesthesia controller based on a multiplexed mass spectrometer system. The controller deals with measurement deterioration caused by measurement delay and rise time through a tong catheter as well as long sampling times due to the multiplexed measurements. Measurement data is extrapolated between sampling periods to increase the estimation convergence rate. A multiple-step-ahead predictive control algorithm is used to calculate intermediatc control inputs between sampling intervals. Simulations are used to validate the designed controller.

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박형 자기소자를 이용한 AC-PDP 전원회로의 설계 및 제작 (Design and Implementation of AC-PDP Power Supply using Planar Magnetic Components)

  • 김명수;최병조
    • 전력전자학회:학술대회논문집
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    • 전력전자학회 2004년도 전력전자학술대회 논문집(2)
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    • pp.677-681
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    • 2004
  • This paper presents the design and implementation of a low-profile power supply developed for AC-PDP application systems. In the proposed power supply, planar magnetics and SMD devices are integrated into advanced power conversion techniques to implement a low-profile power supply applicable to most AC-PDP application systems. Engineering details on the design and fabrication of planar magnetic components are presented. The performance of the prototype power supply is also demonstrated to validate the application potentials of the proposed power supply.

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A study on manufacturing methods for flexible microelectronics

  • Sakai, T.;Van Der Horst, A.J.J.;Hovestad, A.J.;Otten, J.G.L.;Van Doremalen, H.C.M.
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1711-1714
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    • 2007
  • Various manufacturing methods are analyzed by using manufacturing metrics to validate which method would be applicable to flexible microelectronics. Among others, Roll-to-Roll method is revealed to inherently have an excessive WIP resulting in long cycle time and limited diversity as well as low equipment efficiency.

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모터 구동형 시트벨트 Retractor 개발 (Development of a Motorized Seatbelt Retractor)

  • 신윤수;김명동;박준형;김일환
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2006년 학술대회 논문집 정보 및 제어부문
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    • pp.336-338
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    • 2006
  • Motorized retractors enhance the safety of passengers by removing the slack of webbing and by holding upright driving position. Reliability of a driving mechanism that includes one-way clutch between the driving motor and webbing is directly linked to the safety of passenger. In this research, conditions for locking one-way clutch and also conditions for sustaining locking are theoretically investigated. the operation of a motorized retractor under realistic conditions is simulated in order to validate the proposed retractor design.

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Simultaneous determination of talniflumate and its metabolite in human plasma by high-performance liquid chromatography

  • Jang, Dong-Jin;Go, Hye-Ran;Kim, Chong-Kook
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.1
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    • pp.284.3-285
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    • 2003
  • Talniflumate is a potent analgesic and anti-inflammatory drug widely prescribed in rheumatoid diseases. The purpose of this work was to develop and validate a specific and robust method for the simultaneous determination of talniflumate and its metabolite, niflumic acid, in human plasma. Indomethacin was used as an internal standard (IS). (omitted)

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통계적 에너지 해석법을 이용한 KTX차량의 실내소음 해석 (Analysis of Interior Noise for KTX Train using SEA)

  • 김재철;이찬우;최성훈
    • 한국철도학회:학술대회논문집
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    • 한국철도학회 2004년도 춘계학술대회 논문집
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    • pp.783-788
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    • 2004
  • Recently, Statistical Energy Analysis(SEA) is being increasingly applied to describe vibro-acoustic behavior of complex structures, such as air plane, automobile, ship, building. In this paper, we discuss the application of SEA to predict the interior noise for KTX train. To validate the SEA model of KTX train, calculated the interior noise for motorized car is compared to measured one. Finally, the reduction measures of interior noise for KTX are also discussed.

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INSIMS : 시뮬레이션 코드 자동생성이 가능한 제조공적 전용 시뮬레이터 개발에 관한 연구 (INSIMS : An Intelligent Simulation Generator for Manufacturing Systems)

  • 이건창
    • 한국시뮬레이션학회논문지
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    • 제5권1호
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    • pp.67-79
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    • 1996
  • This paper proposes an intelligent simulation generator, called INSIMS, for manufacturing systems. The INSIMS provides an interactive dialogue interactive dialogue interface and code generation tools for modeling and code genration of manufacturing systems. The interactive dialogue interface helps non-expert simulation modeler specify manufacturing systems with ease. After completing the model construction processes, the modeling specifications are automatically converted into SLAM II codes by code generation tools. To validate the usefulness of INSIMS and to illustrate the modeling processes, an example system has been presented.

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