• 아동학회지
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• 제14권1호
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• pp.59-75
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• 1993

Based upon the ABC-X model and family systems theory, this study examined (1) problem-solving and behavioral strategies utilized by children in divorced families, and (2) factors related to children's post-divorce adjustment. Date were collected from 158 elementary school aged children and adolescents of divorced families in an urban area (56 male and 102 female). Results of this study indicated that there were significant age differences in problem-solving and behavioral strategies utilized by difficult family situations. Factors that are useful in predicting adjustment of divorced children are the following variables: sex, visitation frequency of noncustodial parent, quality of custodial parent-child communication, and length of divorce. Implications for knowledge as well as recommendations for future research are discussed.

• 한국멀티미디어학회논문지
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• 제18권11호
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• pp.1375-1382
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• 2015

This paper aims to introduce the numerical methods for solving the optimal control theory to model bufferbloat problem. Mathematical tools are useful to provide insight for system engineers and users to understand better about what we are facing right now while experiment in a large-scale testbed can encourage us to implement in realistic scenario. In this paper, we introduce a survey of the numerical methods for solving the optimal control problem. We propose the dynamic optimization sweeping algorithm for optimal control of the active queue management. Simulation results in network simulator ns2 demonstrate that our proposed algorithm can obtain the stability faster than the others while still maintain a short queue length (≈10 packets) and low delay experience for arriving packets (0.4 seconds).

• 산업공학
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• 제9권3호
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• pp.257-268
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• 1996

This paper illustrates the process of developing and configuring the prototype Computer Analysis System for Controlling Occupational WORKload (CAS-COWORK). The software interface between the database and expert system was attempted. The database is used for storing and retrieving series of data entered by general users and the expert system is used for identifying and solving occupational problem areas. Two theories were applied in developing the algorithm base of CAS-COWORK that were used to calculate overall workload stress level. The fuzzy set theory was introduced to capture the subject‘s workload stress perception. The Analytic Hierarchy Process (AHP) was introduced to estimate the importance of the task and workplace variables. The purpose of the system development is for future prediction and problem solving which would be highly valuable to the industrial engineer.

• Educational Technology International
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• 제7권2호
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• pp.23-44
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• 2006

As the educational paradigm has shifted from the traditional knowledge oriented instruction learning to the knowledge product oriented instructional learning, the development of student's creativity becomes one of the most important educational goals, because the ability that can produce the knowledge creatively is required in the digital information knowledge based society. The purpose of this study is to make a basic direction and strategy for the instructional design to develop an on and off line blended instructional design which will help a learning community to be a more collaborative and creative learning community. This research has investigated the concept and the characteristics of collaborative creativity and creative problem solving as the theoretical basis of the design. After that, on the basis of the theories connected with the collaborative creativity theory, the direction and the strategies for the development of collaborative creativity was designed. The design was applied into the real learning community and finally proved the effectiveness of the learning model for the development of the collaborative creativity by the quantitative evaluation.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권10호
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• pp.5260-5275
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• 2019

In the process of constructing the traditional offensive and defensive game theory model, these are some shortages for considering the dynamic change of security risk problem. By analysing the critical indicators of the incomplete information game theory model, incomplete information attack and defense game theory model and the mathematical engineering method for solving Bayes-Nash equilibrium, the risk-averse income function for information assets is summarized as the problem of maximising the return of the equilibrium point. To obtain the functional relationship between the optimal strategy combination of the offense and defense and the information asset security probability and risk probability. At the same time, the offensive and defensive examples are used to visually analyse and demonstrate the incomplete information game and the Harsanyi conversion method. First, the incomplete information game and the Harsanyi conversion problem is discussed through the attack and defense examples and using the game tree. Then the strategy expression of incomplete information static game and the engineering mathematics method of Bayes-Nash equilibrium are given. After that, it focuses on the offensive and defensive game problem of unsafe information network based on risk aversion. The problem of attack and defense is obtained by the issue of maximizing utility, and then the Bayes-Nash equilibrium of offense and defense game is carried out around the security risk of assets. Finally, the application model in network security penetration and defense is analyzed by designing a simulation example of attack and defense penetration. The analysis results show that the constructed income function model is feasible and practical.

• 한국학교수학회논문집
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• 제8권4호
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• pp.481-494
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• 2005

본 연구는 대학에서 연구와 교육을 통하여 축적된 수학교육에 대한 노하우를 상대적으로 소외된 도서지역 고등학생들에게 제공함으로써 고급지식 및 이론의 확산에 힘쓰고자 한다. 연구는 삶의 지혜를 얻기 위한 수학, 실용능력을 배양하기 위한 실용수학, 자신의 품격을 높이기 위한 교양 수학으로 나누어 진행하며 수학 공부를 해야 하는 이유, 수학문제 해결력을 증진시키는 방안, 수학 기기를 이용한 수학학습, 암호이론 및 게임이론 소개, GSP를 이용한 도형학습, 수학과 스포츠, 수학과 예술 등을 포함하여 교재를 개발하고 개발된 교재를 통하여 대학원생을 훈련하고 수업계획안에 따라 수업을 하게 하는 도서지역 고등학생을 위한 흥미롭고 효과적인 수학지도 방안을 연구한다.

• 철학연구
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• 제144권
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• pp.205-234
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• 2017

세네카는 <분노에 대하여>를 통하여 세네카 특유의 분노의 특성과 분노의 예방 치유법을 제시했다. 이진남은 세네카의 분노 개념과 치유법에 존 듀이의 문제해결기법을 결합하여 다섯 단계의 분노해결기법을 고안했다. 그리고 이 기법으로 분노를 조절하고 제어하는 임상모델을 제시한다. 하지만 이진남의 시도는 분노를 제한적으로 다루고 있으며, 예방적 단기치료라는 한계점을 노정한다. 이를 보완하기 위하여 필자는 세네카가 구분한 분노 1,2단계는 통제 가능한 분노, 분노 3단계는 통제 불가능한 분노로 구분한다. 통제 불가능한 분노를 분노 자체인 분노와 분노로 인해서 유발된 문제를 함의하는 분노로 규정한다. 그리고 통제 불가능한 분노 중 분노 자체로서의 분노는 예방적 차원으로, 분노로 인해서 유발된 문제는 치유적 차원으로 접근할 필요가 있음을 제안한다. 이를 위하여 분노해결기법의 3단계인 '이해'의 단계를 수정하고 '도약' 이라는 6단계를 추가하여 기법을 보완한다. 이를 기반으로 통제 불가능한 분노에 노출된 내담자의 실제 사례를 임상모델로 제시하며 철학상담의 효과성과 정체성을 제시할 것이다.

• Coupled systems mechanics
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• 제11권2호
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• pp.167-198
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• 2022

In this paper we deal with classical instability problems of heterogeneous Euler beam under conservative loading. It is chosen as the model problem to systematically present several possible solution methods from simplest deterministic to more complex stochastic approach, both of which that can handle more complex engineering problems. We first present classical analytic solution along with rigorous definition of the classical Euler buckling problem starting from homogeneous beam with either simplified linearized theory or the most general geometrically exact beam theory. We then present the numerical solution to this problem by using reduced model constructed by discrete approximation based upon the weak form of the instability problem featuring von Karman (virtual) strain combined with the finite element method. We explain how such numerical approach can easily be adapted to solving instability problems much more complex than classical Euler's beam and in particular for heterogeneous beam, where analytic solution is not readily available. We finally present the stochastic approach making use of the Duffing oscillator, as the corresponding reduced model for heterogeneous Euler's beam within the dynamics framework. We show that such an approach allows computing probability density function quantifying all possible solutions to this instability problem. We conclude that increased computational cost of the stochastic framework is more than compensated by its ability to take into account beam material heterogeneities described in terms of fast oscillating stochastic process, which is typical of time evolution of internal variables describing plasticity and damage.

• 정보교육학회논문지
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• 제10권2호
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• pp.229-239
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• 2006

본 연구에서는 구성주의 이론을 바탕으로 한 문제 중심 학습(PBL)을 초등학교 컴퓨터 교육에 적용하여 학습자의 수준에 따라 문제 해결 과정과 컴퓨터 활용 능력에 미치는 영향을 분석해 보았다. 본 연구의 목적 및 선행 연구에 기초하여 고안된 PBL 모형에 따라 초등학교 3학년 컴퓨터 교수-학습 내용 중 '소프트웨어의 활용' 영역을 재구성하여 3주간 실험처치 하였다. 분석 결과 PBL을 적용한 컴퓨터 교수-학습은 문제 해결 과정에 있어서 학습자의 수준에 따라 유의미한 효과가 있었으며, 학습자의 컴퓨터 활용 능력 신장에 긍정적인 영향을 미치는 것으로 나타났다. 본 연구의 결과에 대한 시사점 및 후속 연구에 대한 제언을 제시하였다.

• 대한지구과학교육학회지
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• 제5권2호
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• pp.213-223
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• 2012

This study explored practicing elementary school teacher's beliefs of scientific inquiry and scientific inquiry teaching methods. Defining teacher's beliefs as a broad construct, we tried to examine the teachers' understandings about the scientific inquiry and scientific inquiry teaching method. This study drew on interview data from 10 elementary teachers in busan and changwon area of korea. Conclusions of this study include; First, we found that elementary teacher's beliefs of inquiry were represented variously. And they considered that inquiry is the important goal of science education. They though that the goal of science education is development of Scientific inquiry skills, Scientific thinking skills, development of Creativity and problem solving ability, increasing interest about science, understanding of the basic concepts of science and apply of real-life. second, most of the teachers though that Scientific inquiry is scientists activities, they defined 'the process of creation of new knowledge', 'the process of deriving theory', 'solving process of intellectual curiosity', 'Problem-solving process'. third, they considered that teaching method of scientific inquiry is open inquiry activities. however, they thought that there are many difficulties to actually apply. Understanding teachers' beliefs has implications for both the enactment of inquiry teaching in the classroom as well as the uptake of new teaching behaviors during professional development, with enhanced outcomes for engaging students in Science.