• 한국정보과학회논문지:소프트웨어및응용
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• 제32권5호
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• pp.438-448
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• 2005

본 논문에서는 학습자들의 학습 특성 및 학습 능력에 따라 학습내용을 동적으로 구성하여 제공하는 적응형 교수 시스템을 제안한다. 본 논문에서 제안한 시스템은 학습 단계와 평가 단계를 연계함으로써 평가 단계에서 추정된 학습자의 능력에 따라 차기 학습 단계에서 수준별 학습내용을 동적으로 구성하여 학습자에게 제공함으로서 개인화된 교수${\cdot}$학습을 지원하고 있다. 이를 위해 먼저 학습자들의 학습 능력을 정확하게 평가할 수 있도록 문항반응이론에 의한 컴퓨터 적응적 평가를 이용하여 평가 단계를 구현하였으며, 또한 추정된 각 학습자의 능력 수준에 맞는 학습내용을 제공하기 위해 퍼지 개념을 이용하여 퍼지 수준 집합을 구성한 후 제공함으로써 학습자에 따른 수준별 학습이 가능하도록 학습 단계를 구현하였다.

• 한국실내디자인학회논문집
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• 제10호
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• pp.58-68
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• 1997

The core of character and concept in an exhibition space of contemporary museum is that the place for relics and materials changes into the place for spectators, the static exhibition place changes into the dynamic exhibition place, and the place for learning naturally during amusement. In other words, it could convey the conceptual exhibition object which is not the material object called a relic, it could be a place where is to investigate, participate, experience and enjoy with easily method to general public, and ordinary people are supposed to experience with integrative the world of intellectual, cultural and artistic which is inconcionsly rising a dimensiov. In order to response positively the change of these exhibition concept itself, exhibition system will be established through the analysis of realistic exhibition objects with the visulatization of theme or thought of an exhibitiov. In process of conveying image, the effective and concrete exhibition method and technique should be measured in order to realize the communication between spectators and exhibition objects. The purpose of this study is to find the methodology which is enable to establish the exhibition theme and presentation system through the selection and analysis of exhibition objects in major cases of a musem of ecience and engneering, to find the process model till the methodology applies to the space scheme, and to find finally the designed indicators which is applicable to the progress of exhibition desigv.

• Nuclear Engineering and Technology
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• 제33권4호
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• pp.409-422
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• 2001

The dynamic character of a system of the governing differential equations for the one- dimensional two-fluid model, where the momentum flux parameters are employed to consider the velocity and void fraction distribution in a flow channel, is investigated. In response to a perturbation in the form of a＇traveling wave, a linear stability analysis is peformed for the governing differential equations. The expression for the growth factor as a function of wave number and various flow parameters is analytically derived. It provides the necessary and sufficient conditions for the stability of the one-dimensional two-fluid model in terms of momentum flux parameters. It is demonstrated that the one-dimensional two-fluid model employing the physical momentum flux parameters for the whole range of dispersed flow regime, which are determined from the simplified velocity and void fraction profiles constructed from the available experimental data and $C_{o}$ correlation, is stable to the linear perturbations in all wave-lengths. As the basic form of the governing differential equations for the conventional one-dimensional two-fluid model is mathematically ill posed, it is suggested that the velocity and void distributions should be properly accounted for in the one-dimensional two-fluid model by use of momentum flux parameters.s.