• 한국수학사학회지
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• 제29권1호
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• pp.17-30
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• 2016

This study focused on the selection and application of mathematical problems to provide mathematically challenging tasks for the gifted elementary students. For the selection, a mathematical problem from <算術管見> of Joseon dynasty, '圓容三方互求', was selected, considering the participants' experiences of problem solving and the variety of approaches to the problem. For the application, teaching strategies such as individual problem solving and sharing of the solving methods were used. The problem was provided for 13 mathematically gifted elementary students. They not only solved it individually but also shared their approaches by presentations. Their solving and sharing processes were observed and their results were analyzed. Based on this, some didactical considerations were suggested.

• International Journal of Human Ecology
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• 제14권2호
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• pp.25-40
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• 2013

Addressing challenging behavior in young children with special needs is an important issue. This study analyzed the results of literature on parent-implemented behavioral interventions designed to manage the challenging behavior of children with developmental disabilities under 8 years of age. Seventeen relevant studies published in peer-reviewed English journals during the last 15 years were selected for review. The literature review showed that adequately trained parents can serve as a competent intervention agent, thereby making significant contributions to mitigating children's behavior problems. The reviewed studies also demonstrated that parents could play a variety of important roles such as informants and trainers in behavioral interventions. However, the conclusions on parent-implemented behavioral intervention may be tentative rather than conclusive due to previous research limitations including the lack of treatment integrity and social validity data. In addition, this review discussed several implications for practitioners, indicated the limitations of the reviewed studies, and presented suggestions for future research.

• 제어로봇시스템학회논문지
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• 제9권9호
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• pp.651-657
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• 2003

Linearization is one of the most successful approaches nonlinear system control. The objective of this paper is to survey the recent results in linearization theory. It is hoped to be useful in understanding various linearization problems and challenging unsolved problems.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제2권1호
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• pp.13-19
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• 1998

The What-If-Not strategy as proposed by Brown & Walter (1969) is one of the most effective strategies for problem posing. However, it has focused only on the aspect of algorithms for generating problems. The aim of this strategy and how it is used to accomplish the aim of the challenging phase are not clear. We need to clarify the aim of the What-If-Not strategy and to establish the process of the strategy for accomplishing the aim. The purpose of this article is to offer a new What-If-Not strategy by clarifying the aim of the challenging phase.

• 아동학회지
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• 제33권6호
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• pp.187-205
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• 2012

In this study, 150 previous studies of young children's challenging behavior, conducted over the past 10 years, from 2003 to 2012, were selected. These studies were in relation to young children both with and without disabilities, and they were thus used for the purposes of comparative analysis. The major findings are as follows. First, research on challenging behavior not only of young children with disabilities but also of those without disabilities has been an increasing trend from 2008. While most studies of those without disabilities were based on observations by parents or teachers using a variety of tools, studies regarding those with disabilities mainly used single-subject research methods using an operational definition. Second, the bulk of the studies of young children without disabilities were focused on interaction between various children's internal variables and a variety of parent-related variables related to the occurrence of challenging behavior. In comparison, studies of young children with disabilities were focused excessively on direct intervention after the occurrence of problems. Regarding those without disabilities, the interaction between children's temperament, internal variables, and their mothers' parenting behavior, external variables were the main areas of interest for these researchers. There is clearly a growing need for more active research aimed at the prevention of challenging behavior. Challenging behavior in early childhood has an influence not only on each child's present and future academic achievement levels and their quality of life but also on the quality of instruction in classroom available to all children.

• 아동학회지
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• 제28권5호
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• pp.73-89
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• 2007

The purpose of this study was to develop a reliable and valid instrument to assess Korean teachers' strategies for addressing challenging behaviors of preschoolers. The Teacher Strategy Questionnaire(TSQ) consisting of 34 items was developed with three theoretically driven factors(positive proactive, positive reactive, and negative reactive strategies). Participants were 238 preschool and daycare center teachers who responded to the TSQ. Validity and reliability of the TSQ were explored using Cronbach's $\alpha$, item analysis, and factor analyses. The reliability of the TSQ was relatively high, ranging from .74 to .85. No item needed to be eliminated. Among the three pre-structured factors of the TSQ, one positive proactive factor was identified as having two innate factors.

• 대한산업공학회지
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• 제34권1호
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• pp.13-22
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• 2008

This paper gives reviews on current research status in telecommunication network design. Two problems are identified as major research issues. One is the WDM network design problem, where traffic grooming, virtual topology design and routing and wavelength assignment problems are considered. The other is the OSPF weight setting problem which was proposed as a practical method to implement traffic engineering capability in IP networks. After presenting surveys on those problems, we discuss potential challenging research issues in telecommunication network design.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2005년도 추계 종합학술대회 논문집
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• pp.284-288
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• 2005

인터넷 원격교육이 보편화되어 가고 있는 현시점에서 인터넷 원격교육의 교육적 효과에 대한 검증은 매우 필요한 연구 대상이라고 할 수 있다. 면대면 교육이 아닌 인터넷원격교육의 문제점에 대한 분석은 교육적 효과에 대한 검증에서 반드시 거쳐야하는 중요성을 내포하고 있다. 본 연구는 인터넷 원격교육에 참가한 학생들을 대상으로 한 설문을 바탕으로 문제점에 대한 분석을 실시하였다. 문제점을 환경적문제, 학생자신의 문제, 교수설계문제, 운영상의문제의 4가지 카타고리로 구분하고 카타고리별 문제점들을 도출하여 설문을 통해 문제의 심각도를 분석하였다. 또한 각 문제들의 성별, 직업유무, 나이에 따른 차이 유무를 통계적 방법론을 통하여 검증하였다.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제13권4호
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• pp.309-330
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• 2009

The article aims to present findings of a study which has examined the ability of elementary school mathematics teachers and of teacher-trainees in other disciplines to solve irregular challenging problems of sequences in general rather than numerical sequences only. The findings show that mathematics teachers succeed to cope with unusual assignments when the requirements of the problems presented to them are analogous to irregular problems. However, when the problems require a change in the thinking procedure in the direction of creative thinking, there is a considerable decrease in performance. Another finding shows that, although teacher-trainees succeed less in solving the presented problems, they give incorrect solutions which do indicate creative thinking. An inevitable conclusion based on the research findings is that teacher training institutions should enhance and reinforce multi-directional. branching out and creative thinking competences.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2000년도 제13회 신호처리 합동 학술대회 논문집
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• pp.619-622
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• 2000

In this paper, we propose a method for generating graphic objects having realistic shadows inserted into video sequence for the enhanced augmented reality. Our purpose is to extend the work of [1], which is applicable to the case of a static camera, to video sequence. However, in case of video, there are a few challenging problems, including the camera calibration problem over video sequence, false shadows occurring when the video camera moves and so on. We solve these problems using the convenient calibration technique of [2] and the information from video sequence . We present the experimental results on real video sequences.