• 한국수학교육학회지시리즈D:수학교육연구
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• 제8권3호
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• pp.183-202
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• 2004

The former study results demonstrate that differences between people of creativity and non-creativity lie in differences of the self-efficacies rather than those of cognitive aspects and a man of higher self-efficacy has a tendency to set up a higher goal of achievement and higher self-efficacy influences his or her achievement results as well (Zimmerman & Bandura 1994). Using the method of mathematical creative responses of open-ended approach (Lee, Hwang & Seo 2003), difference of mathematical self-efficacies has been surveyed in the study. Results of the survey showed that some students of a high mathematical self-efficacy even had bad marks in the originality or creativity but, in some cases, some students of a low mathematical self-efficacy rather had good marks in the fluency. Therefore, the response results mathematical creativity ability may be a special ability and not just a combination of self-efficacy ability. The fluency of the mathematical creative ability may be a combination of mathematical motivation ability that have been surveyed in the study suggest that not only cognitive components but also social and emotional components should be included in a development process of new creative method for teaching and learning mathematics.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제17권2호
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• pp.77-93
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• 2014

본 연구의 목적은 영재의 사고양식 및 수학적 능력의 특성을 밝혀 영재의 특성을 고려한 프로그램 개발에 이바지하고자 하는 데 있다. 이를 위해 초등학교 수학영재교육 대상자와 일반학생을 대상으로 사고양식과 수학적 능력의 구성 요소를 분석하고, 두 변인간의 상호관련성을 탐색하였다. 연구 결과에 따르면 수학영재교육대상자가 일반학생에 비해 입법형, 사법형, 위계형, 전체형, 부분형 내부지향형, 자유형의 사고양식이 높을 뿐만 아니라 계산력, 추론 능력, 가역성, 일반화, 공간, 기억력의 수학적 능력 또한 수학영재교육대상자가 일반학생보다 높은 것으로 나타났다. 그리고 회기분석 결과, 사고양식과 수학적 능력 간에는 어느 정도 상관관계가 있음을 알 수 있었다.

• 한국보육지원학회지
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• 제19권4호
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• pp.29-52
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• 2023

Objective: This research aims to examine the effect of a young children's engineering-focused STEAM program based on the project approach - a program that constructs components aligned with children's interests in their play through an engineering design process - on their scientific inquiry ability, mathematical problem-solving ability, and creativity. Methods: In this research, 42 five-year-old children from a public kindergarten in S district, I city, were randomly divided into experimental and comparative groups, each with 21 children. The engineering-focused STEAM program was conducted from April 18 to June 10, 2022, with the experimental group exploring the 'car' theme and the comparison group focusing on a different theme. The study employed an independent sample t-test and analysis of covariance(ANCOVA), using the pretest as a covariate to control variables. Results: The children-selected 'cars' themed engineering-focused STEAM program was effective in enhancing their scientific inquiry ability, mathematical problem-solving ability and creativity. Conclusion/Implications: The engineering-focused STEAM program, which emerges from young children's interesting daily play, had positive effects on enhancing their scientific inquiry ability, mathematical problem-solving ability, and creativity. This research can serve as fundamental data for developing education programs focused on engineering within the STEAM framework, guided by children's emergent play.

• International Journal of Computer Science & Network Security
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• 제21권1호
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• pp.49-54
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• 2021

Relative to the outer surface of the mastic coating, the reliability of the available waterproofing resource is determined by the ability to stabilize the structural characteristics in difficult climatic conditions. Organic components of mastic as a result of solar radiation, elevated temperatures and their alternating change, atmospheric oxidants, especially in industrial areas, have a tendency to self-polymerization and loss of low molecular weight components. This is the gradual loss of deformability and the transition to brittleness with its tendency to crack as the reasons for the gradual transition from normal to emergency operating condition.The presented mechanism of functioning of the coating surface indicates the expediency of increasing its components, able to stabilize the structure and prevent changes in deformability.Durability, hydrophobicity, water displacement, water absorption are accepted as estimating indicators. The main dependences of the influence of the lost additional components of mastic on the operational properties of the formed coating characterize the ability to provide successful resistance to environmental influences and longer stability. As a result, mastic acquires additional service life.

• 한국수학교육학회지시리즈C:초등수학교육
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• 제16권3호
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• pp.303-313
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• 2013

공간능력은 수학의 직관적 관점과 수학적 이해 및 수학적 성취도와도 밀접한 관련이 있다는 점에서 매우 중요한 능력으로 평가될 수 있다. 본 연구에서는 초등학교 4, 5, 6학년 학생 1228명을 대상으로 공간시각화능력을 조사하였다. 이를 통하여 다음과 같은 연구결과를 얻을 수 있었다. 첫째, 공간시각화 능력과 수학성취도, 공간시각화 능력과 공간시각화 검사시간 사이에 상관관계가 있다. 둘째, 공간능력은 남녀 사이에 차이가 있었으며, 남학생이 여학생보다 더 높게 나타났다. 셋째, 공간능력은 학년수준에서 4학년보다는 5학년이 높았으며, 5학년보다는 6학년이 더 높게 나타났다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제21권2호
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• pp.271-282
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• 2007

Producing tools for actively meeting social needs in a radical changing society due to the development of modern technology has been shifted from physical ability to intelligent ability. The prominence of educating creativity is perceived as a good preparation in order to deal with them. Considered that assessment which is systematic activity to collect, analyze, diagnose, and judge information of a series of instruction practices is means to impart evidence and feedback of teaching learning practices, education and assessment is placed on reciprocal relationship. Nevertheless, there has been some tendency of neglect of assessment, comparing education for upbringing creativity. In this paper model of pencil and paper problem is discussed focusing on the sub-components of creativity and problem solving as one of the variety of means to extend mathematical creativity.

• 한국수학교육학회지시리즈D:수학교육연구
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• 제6권1호
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• pp.53-63
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• 2002

This study investigates the impact of Calculator-Based Ranger (CBR) activities in the performance of middle school students' graphing abilities of physical phenomena. Two issues about CBR activities on graphing abilities were addressed in this study; (1) the effect of CBR activities on graphing abilities, and (2) the influence of instructional styles on students' graphing abilities. Following the use of CBR activities, students' graphing abilities were significantly more developed in three components-interpreting, modeling, and transforming. Significant differences were found in students' achievement depending on instructional styles related to differentiation, which is closely connected to transforming distance-time graphs to velocity-time graphs. The findings of this study indicate that CBR activities may enhance students in constructing appropriate webs of related concepts and ability to qualitatively interpret graphs. Using collaborative CBR activities to introduce and explore graphing of physical phenomena is, therefore, recommended for inclusion in the secondary mathematics curriculum.

• 한국수학사학회지
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• 제18권2호
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• pp.75-94
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• 2005

이 연구는 창의적 생산력 계발을 위한 교육 프로그램에서 수학영재 학생들이 생산한 창의적 산출물을 평가할 수 있는 준거를 개발하고자 하였다 수학사를 통해 수학자들이 이룩한 산출물을 토대로 창의적 산출물 생산 모델을 제안하였는데, 이 모델은 수학적 지식, 수학적 사고, 수학적 탐구 기술의 세 가지 요소와 창의적 산출물 전체에 대한 평가요소로 구성되어 있으며, 학생들의 산출물은 모델의 각 요소에 초점을 둔 것에 대응시킬 수 있었다. 수학에서의 창의적 산출물에 대한 평가 준거는 창의적 산출물 생산 모델의 요소에 근거하여 개발하였으며, 이 준거에 의한 평가는 타당성과 신뢰성을 가진 것으로 판단되었다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 하계학술대회 논문집 A
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• pp.265-267
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• 1995

A voltage source PWM converter with battery charging and AC/DC power conversion ability is proposed in this paper. The proposed voltage source PWM converter is independently controlled by active and reactive components and implemented by DSP controller. In UPS application the mathematical model of the voltage source PWM converter has been derived. Finally, the performance of the voltage source converter is shown and discussed through experimental results.

• 한국정밀공학회지
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• 제23권9호
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• pp.142-148
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• 2006

Hydraulic excavators have been popular devices in construction fields because of their multi-workings and economic efficiency. The mathematical models of excavators have many nonlinearities because of opening characteristics and dead zone of main control valve(MCV), oil temperature variation, etc. The objective of this paper is to develop a simulator for hydraulic excavator using AMESim. Components and their circuits are expressed graphically. Also, parameters and nonlinear characteristics are considered in a text style. From the simulation results, fixed spring stiffness of MCV can not obtain the satisfactory accuracy of spool displacement under whole P-Q diagrams. Closed loop type MCV containing a proportional gain, is proposed in this paper that can reduce displacement error. The ability of closed loop MCV is verified through comparing with normal type MCV using AMESim simulator. The excavator simulator can be used to forecast the attachment behaviors when components, mechanical attachments and hydraulic circuits change, or other control algorithms are applied. The simulator could be a kind of development platform for new excavators.