• 한국수학교육학회지시리즈A:수학교육
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• 제41권2호
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• pp.139-155
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• 2002

In this paper we represented the results of surveying on the present condition of mathematics education and the contents of the mathematics text books that are usually taught in Art High Schools interest in mathematics subjects and to achieve the higher level of mathematical abilities. We would like to raise their interest in mathematics and to improve the efficiency of teaching level on the basis of the 7th Mathematics Curriculum Revision. Some suggestions are of offered by considering the level of their mathematical abilities in Art High Schools and the present contents of the mathematical subjects from following views ⑴ the aspect of studying method ⑵ the aspect of revising contents of mathematics textbooks for them ⑶ the aspect of educational policies for Art High Schools

• East Asian mathematical journal
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• 제32권2호
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• pp.175-192
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• 2016

This study aimed to understand the needs of changes in the teaching-learning environment in the university and to develop the liberal art subject of mathematics. The changes of mathematical belief in the university students were investigated to understand how the liberal art subject of mathematics affected them related to mathematics. Upon the study results, the significant changes were occurred from the utility factor on the subject of mathematics in mathematical belief, the importance factor of the answers in the teaching-learning belief, teaching activity factor of the teachers, and inborn capability factor in the belief on the self-concept. The meaningful learning environment and teaching method for the liberal art subject of mathematics are suggested further by these results.

• Kyungpook Mathematical Journal
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• 제49권4호
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• pp.789-799
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• 2009

In this study we consider ${\varphi}$-conformally flat, ${\varphi}$-conharmonically flat, ${\varphi}$-projectively at and ${\varphi}$-concircularly flat Lorentzian ${\alpha}$-Sasakian manifolds. In all cases, we get the manifold will be an ${\eta}$-Einstein manifold.

• Kyungpook Mathematical Journal
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• 제46권2호
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• pp.153-167
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• 2006

We study permuting tri-derivations in ${\Gamma}$-rings and give an example.

• 호남수학학술지
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• 제22권1호
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• pp.61-76
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• 2000

• 한국수학사학회지
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• 제17권3호
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• pp.61-72
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• 2004

본 연구는 동양 최고의 수학서로 꼽히는 구장산술에 주목하여 수학교육학적 측면에서 가치와 의의를 분석하였다. 구장산술은 실생활 문제를 통하여 수학에 접근하고 있으며 개념과 유형별로 알고리즘화하는 구조적 특성을 가진다. 이러한 분석을 바탕으로 오늘날 수학교육에 부합하는 가치를 고찰하였다. 또한, 구장산술이 가지는 역사적, 수학적 업적을 분석하여 수학학습에 미치는 긍정적인 영향과 정의적 영역에서의 의의를 찾고, 마지막으로 오늘날의 해법과는 다른 풀이를 보여주는 계산법에 주목하여, 현장에서의 활용 방안과 그 가치를 제시하였다.

• 한국수학교육학회지시리즈A:수학교육
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• 제51권3호
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• pp.197-210
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• 2012

In this study, we will develop and implement the teaching program of 'Function', on the subject of "Poster-Making utilizing the Graph Art" in the Math Camp for middle-school students. And we will examine the didactical significance through student's activities and products. The teaching program of 'Function' utilizing the Graph Art can be promoted self-directly the understanding of 'Function' concept and the ability for handling 'Function'. In the process of drawing up the graph art, in particular, this program help students to promote the ability for problem-solving and mathematical thinking, and to communicate mathematically and attain the his own level. Ultimately, this program have a positive influence upon cognitive and affective and areas with regard to mathematics.

• Journal of Mechanical Science and Technology
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• 제18권5호
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• pp.830-837
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• 2004

In this paper, the flow properties of staggered labyrinth seals are investigated. Leakage flowrates and pressure distributions are calculated for this seal. Then the dynamic stiffness and damping coefficients are calculated. The results are compared to the results of the some other papers.

• 대한수학회지
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• 제45권6호
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• pp.1535-1548
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• 2008

The analogues of Marcinkiewicz multiplier theorem and Littlewood-Paley theorem are proved for p-Faber series in weighted Smirnov spaces defined on bounded and unbounded components of a rectifiable Jordan curve.

• Kyungpook Mathematical Journal
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• 제45권1호
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• pp.95-103
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• 2005

The present paper deals with Lorentzian ${\alpha}-Sasakian$ manifolds with conformally flat and quasi conform ally flat curvature tensor. It is shown that in both cases, the manifold is locally isometric with a sphere $S^{2^{n}+1}(c)$. Further it is shown that an Lorentzian ${\alpha}-Sasakian$ manifold with R(X, Y).C = 0 is locally isometric with a sphere $S^{2^{n}+1}(c)$, where c = ${\alpha}^2$.