• 한국과학교육학회지
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• 제28권5호
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• pp.409-423
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• 2008

최근 과학교육 분야의 연구들에 의하면 학생들은 과학수업 시 다양한 어려움을 지각하며 수업 후에도 이러한 어려움이 잘 해소되지 않는다는 연구 결과가 보고되고 있다. 그러나 학생들이 느끼는 과학학습의 어려움과 그 원인을 조사하여 이를 해소시키기 위한 연구는 아직 부족한 실정이다. 따라서 학생들의 과학학습 어려움에 대한 체계적인 분석과 더불어 어려움을 해소하고 학습효과를 향상시킬 수 있는 새로운 수업모형 개발이 필요하다. 본 연구에서는 최근의 과학학습 과정에서 학생의 겪는 어려움과 기존 과학수업 모형에 관한 선행연구들을 조사하여, 이 결과를 통합적 정신모형이론 관점에서 분석하였다. 이러한 과정을 거쳐 과학학습 어려움 해소를 도울 수 있는 통합적 정신모형 이론에 기반한 4M 순환학습 수업모형을 개발하였다.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 하계종합학술대회논문집
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• pp.741-744
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• 1998

In the area of the multimedia computer, the demand for the image processing engineer is large. However, there are not many engineers capable of developing practical systems. To teach practical image processing techniques, we need an intergrated education systems which can efficiently present the image processing theory and, at the same time, provide interactive experiments for the theory presented. In this paper, we propose an integrated education systems for the image processing. It consists of the theory presentation systems and the experiment systems. The theory presentation systems uspports multimedia display functions and HTML. It is tightly integrated with the experiment systems which developed based on the integrated image processing algorithm development system called Hello-vision.

• 한국과학교육학회지
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• 제25권6호
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• pp.698-709
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• 2005

When modeling students' conceptual understanding, there are several different frameworks, among which are the alternative conception framework and the mental model framework, which converge to suggest a form of knowledge representation. However, little research has explained how they are different from each other and from memory. The purpose of this study was to develop a new mental model theory that integrates the different terminologies and their background theories, which refer to students' ideas not only in science education, but also in other research areas. For this purpose, at first, we compared different terminologies including alternative conception, p-prim, and mental models, and the underlying theories used for representing students' ideas in learning science. Through such comparison, we tried to find the relationship among them. We reviewed related literature and synthesized the results from both cognitive science (related research areas) and science education approaches, especially, Vosniadou's mental model theory. Based on reviewing previous studies, we have developed a preliminary mental model theory 'an integrated theoretical structure of mental models'. We applied the new mental model theory to interpret data on students' ideas about circular motion from our previous research. We expect our new mental model theory will help us understand how students form their own ideas in science from an integrated perspective.

• Structural Engineering and Mechanics
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• 제26권1호
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• pp.43-68
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• 2007

Using the Mindlin-Reissner plate theory, many quadrilateral plate bending elements have been developed so far to analyze thin and moderately thick plate problems via displacement based finite element method. Here new formulation has been made to analyze thin and moderately thick plate problems using force based finite element method called Integrated Force Method (IFM). The IFM is a novel matrix formulation developed in recent years for analyzing civil, mechanical and aerospace engineering structures. In this method all independent/internal forces are treated as unknown variables which are calculated by simultaneously imposing equations of equilibrium and compatibility conditions. In this paper the force based new bilinear quadrilateral plate bending element (MQP4) is proposed to analyze the thin and moderately thick plate bending problems using Integrated Force Method. The Mindlin-Reissner plate theory has been used in the formulation of this element which accounts the effect of shear deformation. Standard plate bending benchmark problems are analyzed using the proposed element MQP4 via Integrated Force Method to study its performance with respect to accuracy and convergence, and results are compared with those of displacement based 4-node quadrilateral plate bending finite elements available in the literature. The results are also compared with the exact solutions. The proposed element MQP4 is free from shear locking and works satisfactorily in both thin and moderately thick plate bending situations.

• 대한예방한의학회지
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• 제21권1호
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• pp.107-119
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• 2017

Purpose : Recently, cancer has become a chronic disease that requires supervision because of early diagnosis and the development of therapeutic technology. As a result, cancer patients are interested in improving the quality of their lives besides the treatment of cancer itself. Therefore, it is necessary to conduct a qualitative research to understand the vivid experiences of cancer patients and structure their treatment experience. Among qualitative researches, grounded theory is developed based on the data collected in the field. The grounded theory research method is easy to analyze for the process and structure of the treatment experience. Therefore, the purpose of this study is to provide basic data on the integrated medical experience of cancer patients Methods : Participants were conveniently selected, and the criteria for selection were for those who had more than 1 month of hospitalization so that they could dictate their situation and experience in a meaningful manner. Data was collected through in-depth interviews and continued until the data were saturated through theoretical sensitivity and continuous comparison methods. The collected data were analyzed through the process of open-coding, axial coding, and selection coding, which are the research methods of grounded theory. Results : Cancer patients differ in their path, purpose, and attitudes depending on their respective situations and the internal and external resources of individuals. There is also a difference in the perception of their situation among the cancer patients and their families. Cancer patients were shown to recognize and cope with problems in the integrated medical treatment process, and have been classified into 6 different types after the results. Cancer patients showed positive changes in terms of physical, emotional, and lifestyle after their integrated medical treatment. Cancer patients perceived the integrated medical treatment process as a horizontal relationship structure and with diversity. Conclusions : The experience of integrated medical treatment of cancer patients is a process of rehabilitation that heals the body and restores life within the interaction of support system, contextual situation, and internal resources of the individual. Despite this, there is a need not only for the efforts of integrated medical service providers but also institutional support in the future with regards to the current weaknesses and points for improvement. In addition, there is a need for an objective criterion to measure the outcome of integrated medicine for the standardization of integrated medical services.

• 한국정밀공학회지
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• 제15권8호
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• pp.11-16
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• 1998

Recently, the motor-integrated spindle systems have been used to simplify the machine tool structure, to improve the motion flexibility of machine tool, and to perform the high-speed machining. In this study, a static and dynamic analysis system for motor-integrated high-speed spindle systems is developed based on Timoshenko theory, finite element method and windows programming techniques. Since the system has various analysis modules related to static deformation analysis, modal analysis, frequency response analysis, unbalance response analysis and so on, it is useful in performing systematically the design and evaluation processes of motor-integrated high-speed spindle systems under windows GUI environment.

• 대한전자공학회논문지SP
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• 제41권6호
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• pp.127-135
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• 2004

멀티미디어 기술의 광범위한 보급으로 여러 분야에서 영상처리 기술 인력에 대한 수요가 증가하고 있으나, 실무능력을 가진 전문 인력의 수는 시장의 요구에 비해 매우 적다. 영상처리 분야에 실무능력을 갖춘 전문 인력을 양성하기 위해서는 이론 교육과정과 함께 학습한 이론을 실제 영상자료에 적용하고 적용된 결과를 분석해 볼 수 있는 실습과정을 체계적으로 지원할 수 있는 통합된 교육 환경이 필요하다. 본 논문에서는 효율적인 영상처리 교육이 이루어지도록 이론적인 내용과 이론에 따른 다양한 해법을 직접 체험해 볼 수 있고 학습과정에서 얻어진 새로운 아이디어를 쉽게 구현해 볼 수 있는 통합 환경인 MTES(Multimedia Technology Education System)를 제안한다. MTES는 영상처리 개발 환경인 Hello-Vision을 시뮬레이션 환경으로 사용할 수 있도록 수정하였으며, 이론교육환경과 이론과 실습이 체계적으로 이루어지도록 제어하는 제어관리자를 개발하여 효과적인 영상처리 교육 환경이 되도록 개발하였다.

• 과학교육연구지
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• 제37권2호
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• pp.278-293
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• 2013

이 연구에서는 2009 개정 교육과정에 따른 고등학교 융합형 '과학' 교과에서 사용된 선다형 평가 문항의 특성을 분석하였다. 문항의 출제 경향을 분석하기 위해 융합형 교과에 특이적인 분석틀을 구안하여 분석하였으며, 문항 반응 이론을 적용하여 문항의 특성을 양적으로 분석하였다. 문항의 출제 경향 분석 결과, 문항 출처, 융합 범위, 인지 수준 측면에서 융합형 '과학' 교과의 취지를 제대로 반영하고 있지 못하는 것으로 나타났으며, 기존 교육과정의 과학 교과와 같은 분과적 교수-학습 및 평가가 이루어지고 있음을 알 수 있었다. 문항 반응 이론을 적용한 분석 결과, 대체로 문항의 난이도는 적절하며, 변별도는 높은 수준인 것으로 나타났다. 하지만 분석틀을 구성하는 3개 범주와의 연관성은 나타나지 않았다. 이와 같은 연구 결과를 토대로 융합형 '과학' 교과의 취지를 반영한 교수-학습과 평가를 위한 개선점을 논의하였다.

• ETRI Journal
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• 제31권1호
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• pp.89-91
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• 2009

This letter considers the problem of resource sharing among a relay and multiple user nodes in cooperative transmission networks. We formulate this problem as a sellers' market competition and use a noncooperative game to jointly consider the benefits of the relay and the users. We also develop a distributed algorithm to search the Nash equilibrium, the solution of the game. The convergence of the proposed algorithm is analyzed. Simulation results demonstrate that the proposed game can stimulate cooperative diversity among the selfish user nodes and coordinate resource allocation among the user nodes effectively.

• 여성건강간호학회지
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• 제17권1호
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• pp.10-20
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• 2011

Purpose: The purpose of this study was to examine the effects of integrated menopause management program derived theoretical framework of King (1981)'s goal attainment theory model for middle aged women. Methods: This research was a nonequivalent control group non-synchronized design. The subjects of this study were 37 middle aged women in Busan and experiencing menopause; 17 for the experimental group and 20 for the control group. Experimental group was educated for 1 hour group interchange activity and five minutes individual interchange activity, once a week during 8 weeks. Measurement for comparison were taken two times, at baseline, 8wks. The effects were evaluated with menopause symptom, menopause knowledge, menopause attitude and menopause management. Results: The experimental group was significantly lower than control group on menopause symptom (F=5.936, p=.010) and higher than control group on menopause knowledge (F=12.031, p=.001) and menopause management (F=5.861, p=.010) after integrated menopause management program. However integrated menopause management program did not make significant differences on menopause attitude (F=0.105, p=.374). Conclusion: Results indicate that integrated menopause management program could be an effective intervention decreasing menopause symptom and for increasing menopause knowledge, menopause management in middle aged women.