• Proceedings of the Korean Information Science Society Conference
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• 2000.04b
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• pp.702-704
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• 2000

교육시스템에 관한 논문에는 개발관련문서에 있는 방대한 양의 요약.정리되며, 일반사용자를 대상으로 사용자인터페이스를 설명하는 것이 아니라 이론적 근거와 개발과정 그리고 교육적 효과와 같은 시스템 전반에 관한 기술적.교육적 내용을 담고 있다. 시스템 개발에 직접 참여하지 못한 사람들이 교육시스템을 이해하는데 있어서, 교육시스템의 목적과 전체구조를 우선적으로 명료하게 제시하는 것은 효과적이며 중요한 일이다. 그러므로 교육시스템을 설명할 때, 시스템의 목적은 물론 구성요소와 이들의 관계를 명시한 다음, 하위 구성요소의 세부적인 기능과 구조, 교육이론과의 관련 등을 명확하게 기술하는 것이 바람직하다. 본 연구에서는 교육시스템의 전체 구조를 명확하게 표현하기 위하여 교육시스템의 표준구조를 구성요소 측면에서 제시하였다. 이 표준구조는 H/W, S/W, 인적요소와 기술 그리고 상호작용이라는 5가지 요소로 구성되어 있으며, 교육시스템의 이해나 교육시스템간의 객관적 비교를 가능하게 할 뿐만 아니라 교육시스템의 분석이나 개선을 위한 준거가 될 수 있다.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.28 no.1
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• pp.85-92
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• 2015

This article presents the dynamic instability response of sigmoid functionally graded material plates on elastic foundation using the higher-order shear deformation theory. The higher-order shear deformation theory has ability to capture the quadratic variation of shear strain and consequently shear stress through the plate thickness. The governing equations are then written in the form of Mathieu-Hill equations and then Bolotin's method is employed to determine the instability regions. The boundaries of the instability regions are represented in the dynamic load and excitation frequency plane. The results of dynamic instability analysis of sigmoid functionally graded material plate are presented using the Navier's procedure to illustrate the effect of elastic foundation parameter on dynamic response. The relations between Winkler and Pasternak elastic foundation parameter are discussed by numerical results. Also, the effects of static load factor, power-law index and side-to-thickness ratio on dynamic instability analysis are investigated and discussed. In order to validate the present solutions, the reference solutions are used and discussed. The theoretical development as well as numerical solutions presented herein should serve as reference for the dynamic instability study of S-FGM plates.

• Journal of the Korean Home Economics Association
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• v.40 no.12
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• pp.1-11
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• 2002

This paper is intended as an analysis of the Chapter on Family in textbooks of a Middle school course at the aspect of Parson's Structural Functionalism Theory. In this analysis, We'd like to explore how the value of family is expressed in the Art-Home Economics textbooks. Generally, family is a subsystem in the structural system of whole society and family has two main functions to promote stability and equilibrium from the Parson's Structural Functionalism Theory point of view. Today, the concern with the Structural Functionalism Theory is dominantly reflected in textbooks, even though it has been proposed that the Structural Functionalism is not appropriate to explain family of modem society. Like that, the question now arises: the family history and interaction is ignored in the Structural Functionalism Theory. That is to say, There are limitations of Structural Functionalism Theory. The textbooks of Art-Home Economics was based on the revised curriculum has been severely changed in terms of external system of textbooks. But, we didn't know how much the view of the Structural Functionalism Theory is involved in textbooks. In this article, we analyze the view of the Structural Functionalism Theory in the Art- Home Economics textbooks using the Contents Analysis. At the same time, we find the confusion of family value revealed in textbooks.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.38 no.6
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• pp.18-25
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• 2001

KBANN (knowledge-based artificial neural network) combining the analytical learning and the inductive learning has been shown to be more effective than other machine learning models. However KBANN doesn't have the theory refinement ability because the topology of network can't be altered dynamically. Although TopGen was proposed to extend the ability of KABNN in this respect, it also had some defects. The algorithms which could solve this TopGen's defects, enabling the refinement of theory, by extending KBANN, are designed.

• Journal of KIISE:Computer Systems and Theory
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• v.28 no.5
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• pp.259-267
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• 2001

칩의 집적도에 비례하여 설계검증 및 칩 제작 후의 결함점검은 갈수록 어려워지며 이러한 테스트 문제의 원초적 해결을 위하여 다양한 테스트설계 기술이 널리 개발되고 있다. 상위 수준의 테스트설계에서는 회로의 기능에 대해서는 알 수 있으나 구조에 대해서는 알 수 없고, 하위 수준의 테스트설계에서는 회로의 구조를 알 수 있으나 기능은 알 수 없다. 따라서 테스트 설계는 기능을 기술하는 상위 수준에서부터 고려되어 하위 게이트수준에서 스캔플립플롭을 선택하여야 최적화된 성능을 얻을 수 있다. 본 논문에서는 테스트용이도를 증진시키기 위해, 상위수준의 기능정보에 대해서는 테스트점을 삽입하여 제어흐름(control flow)을 변경하고, 상위 수준의 합성 후에 하위 수준에서 스캔플립플롭을 선택하여 다시 합성하는 상위.하위 수준에서 통합된 테스트 합성 기술을 제안한다. 실험결과 통합된 테스트 합성 기술이 대부분의 벤치마크 회로에서 높은 고장검출율을 보여주고 있다.

• Journal of the Computational Structural Engineering Institute of Korea
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• v.28 no.5
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• pp.553-561
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• 2015

The exponential and power law functionally graded material(FGM) theory is reformulated considering the refined shear and normal deformation theory. This theory has ability to capture the both normal deformation effect and exponential and power law function in terms of the volume fraction of the constituents for material properties through the plate thickness. Navier's method has been used to solve the governing equations for all edges simply supported plates on Pasternak elastic foundation. Numerical solutions of vibration analysis of FGM plates are presented using this theory to illustrate the effects of power law index and 3-D theory of exponential and power law function on natural frequency. The relations between 3-D and 2-D higher-order shear deformation theory are discussed by numerical results. Further, effects of (i) power law index, (ii) side-to-thickness ratio, and (iii) elastic foundation parameter on nondimensional natural frequency are studied. To validate the present solutions, the reference solutions are discussed.

• The Journal of the Korea Contents Association
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• v.22 no.10
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• pp.74-82
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• 2022

The purpose of this paper is to provide a multi-modular account of double accusative constructions in Korean in the framework of Autolexical Grammar. The grammar views syntactic, semantic, and morphological structures of sentences as modules which are generated simultaneously and independently. Unlike syntactocentric theories, this paper analyzes semantic characteristics of double accusatives through function-argument (F/A) structure along with roles structure (RS) and information structure (IS). In F/A structure of double accusatives, the first accusative becomes an argument of a predicate, unlike the possessive, which is an argument of a relational noun. Furthermore, the first accusative of double accusatives takes the role of patient in RS, which allows it to become the subject of a passive sentence. On the other hand, the second accusative, which is originally the possessee, becomes a focal area in IS. Therefore, the purpose of double accusatives is twofold: one is to turn the possessor into an independent argument of a predicate which takes patient role, and the other is to turn the possessee into a focus. Such semantic characteristics of double accusatives can be expressed by means of multi-dimensional structures of F/A structure, RS, and IS of Autolexical Grammar, which allows an integrated account of the phenomenon.

• Journal of the Korea Convergence Society
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• v.9 no.6
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• pp.191-201
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• 2018

This study aims to analyze the causes and results of the significant changes in the architecture of Japanese architect Kenzo Tange in the 1960s. For a new era and new architecture of Japan, Tange who has been successful in leading the early modern architecture of Japan. since the 1960s, proposed a structuralist approach, deviating from the existing functionalist tendencies that he has pursued. Therefore, in this paper, we examine what structural changes tend to be made in the post-1960s from the functionalist tendencies of the previous period, and what causes the changes to structuralist tendencies. In conclusion, rather than suggesting alternatives to deny the existing concept of functionalism, Tange's theory encompassed both functionalism and structuralism and achieved the effective reorganization of functions while complementing the disadvantages of existing functionalism through functional elements and their structuring.

• 전기의세계
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• v.42 no.3
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• pp.3-11
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• 1993

본 논문에서는 공장자동화, 우주로보트, 심해 자동차 등 여러 응용분야에서 새롭게 대두되는 고자치 시스템의 접근방법들과 시스템적인 개념들을 소개하였다. 이 분야에서의 주된 관심사는 상위계층의 기호적 모델과 하위계층의 도역학적(제어이론적) 모델간의 체계적 통합에 있다고 볼 수 있다. 즉, 프랜닝, 작동, 고장진단 및 수리 등과 같은 지능적 기능들을 제공할 수 있는 여러 계층의 동역학적 및 기호적 모델들의 유기적인 포괄 및 추상화에 의해서만 현존하는 다계층 제어 및 정보구조를 확장해 나갈 수 있을 것이다. 그러므로 고자치 시스템의 디자인을 위해서는 여러 분야의 팀단위의 노력이 경주되어야만 할 것이다. 디자인상의 난제로는 인간과 로보트간의 기능적 분할 그리고 상위화 하위간의 자동화를 위한 역할 분담등을 들 수 있다.

• Journal of Aerospace System Engineering
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• v.18 no.2
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• pp.12-20
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• 2024

The application of reinforcement design to ensure the structural safety of electronics in small satellites is limited by the spatial constraints of the satellite structure during launch vibrations. Additionally, a reliable evaluation approach is needed for mounting highly integrated devices that are susceptible to fatigue failure. Although the Steinberg fatigue failure theory has been used to assess the structural integrity of electronic devices, recent studies have highlighted its theoretical limitations. In this paper, we propose a structural methodology based on the critical strain theory to design the digital control unit (DCU) of the X-band SAR payload component for the small SAR technology experimental project (S-STEP), a small satellite constellation. To validate the design, we conducted modal and random analyses using simplified modeling techniques. Based on our methodology, we ultimately demonstrated the structural safety of the electronics through analysis results, safety margin derivation, and functional tests conducted both before and after the launch test.