• Journal of Acupuncture Research
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• 제18권1호
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• pp.226-236
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• 2001

Objects : To evaluate clinical efficiency of The A-Shi point for the herniated lumbar intervertebral disc. Methods : The patients who had a diagnosis of herniated lumbar intervertebral disc by lumber CT and MRI, and were observed from the twentieth March 2000 to the tenth Novemsber 2000, were divided into two classes ; the "A" group was 15 cases practiced with Acupuncture treatment used of A-Shi point and the twelve-Meridian, the "B"group 15cases only Acupuncture treatment used of twelve-Meridian, Results : the most type of low back pain was, the Gall bladder channel of Foot-souyang 15 cases (50%) and the Gall-Bladder Meridian Muscle was 45 cases the most in the existence part of A-Shi point On the result of treatment due to clinical symptoms, the "A" group was 57.9% as excellent and "B" group 19.8%. On the measurement of Lumber flexion, the "A" group proceed more excellent result than the "B group at the whole grade. Conclusion : These results suggest that The A-shi point was effective treatment of herniated intervertebral disc.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제33권2호
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• pp.105-122
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• 2019

교과서에서는 도형 f(x, y) = 0을 x축 방향으로 a만큼, y축 방향으로 b만큼 평행이동한 도형의 방정식을 구할 때 도형 f(x, y) = 0 위의 임의의 점을 점 (x, y)로, 평행이동 된 도형 f(x-a, y-b) = 0 위의 점은 점 (x', y') 로 표현하고 있다. 도형 f(x, y) = 0 위의 임의의 점을 점 (x, y)로 표현한다면 점 (x, y)와 도형 f(x, y) = 0은 다른 대상인데 같은 문자들이 사용되어지고 있다. 본 연구에서는 이러한 교과서의 표현이 50년 넘게 고수되어, 학생들의 사고가 경직되므로, 개선이 필요하다고 보고 다음과 같이 연구한다. 첫째, 공식을 유도할 때, 도형 위의 임의의 점을 교과서와 달리 표현했을 때의 학생들의 반응은 어떠한가? 둘째, 살펴본 결과를 바탕으로 교과서 표현을 어떻게 수정할 것인가? 셋째, 수정한 표현에 대해 학생들은 어떻게 반응하는가? 그 결과 도형 위의 임의의 점을 교과서와 달리 표현하고 평행이동 된 도형 위의 점을 점 (x, y)로 두었더니, 조사한 학생들은 모두 본 연구에서 개선한 설명이 더 쉽다고 응답하였다.

• 한국수학교육학회지시리즈A:수학교육
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• 제29권1호
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• pp.41-45
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• 1990

S. Z. Wang, B. Y. Li, Z. M. Gao and K. Iseki proved some fixed point theorems on expansion mappings, which correspond some contractive mappings. In a recent paper, B. E. Rhoades generalized the results for in of mappings. In this paper, we obtain the following theorem, which generalizes the result of B. E. Rhoades. THEOREM. Let A, B, S and T be mappings from a complete metric space (X, d) into itself satisfying the following conditions: (1) ${\Phi}$(d(A$\chi$, By))$\geq$d(Sx, Ty) holds for all x and y in X, where ${\Phi}$ : R$\^$+/ \longrightarrowR$\^$+/ is non-decreasing, uppersemicontinuous and ${\Phi}$(t) < t for each t > 0, (2) A and B are surjective, (3) one of A, B, S and T is continuous, and (4) the pairs A, S and B, T are compatible. Then A, B, S and T have a unique common fixed point in X.

• 대한수학회논문집
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• 제27권1호
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• pp.117-128
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• 2012

Using the concept of a g-monotone mapping we prove some common fixed point theorems for g-non-decreasing mappings which satisfy some generalized nonlinear contractions in partially ordered complete quasi b-metric spaces. The new theorems are generalizations of very recent fixed point theorems due to L. Ciric, N. Cakic, M. Rojovic, and J. S. Ume, [Monotone generalized nonlinear contractions in partailly ordered metric spaces, Fixed Point Theory Appl. (2008), article, ID-131294] and R. P. Agarwal, M. A. El-Gebeily, and D. O'Regan [Generalized contractions in partially ordered metric spaces, Appl. Anal. 87 (2008), 1-8].

• 대한수학회논문집
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• 제38권2호
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• pp.469-485
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• 2023

Let 𝓐 be a unital Banach *-algebra and 𝓜 be a unital *-𝓐-bimodule. If W is a left separating point of 𝓜, we show that every *-derivable mapping at W is a Jordan derivation, and every *-left derivable mapping at W is a Jordan left derivation under the condition W𝓐 = 𝓐W. Moreover we give a complete description of linear mappings 𝛿 and 𝜏 from 𝓐 into 𝓜 satisfying 𝛿(A)B^* + A𝜏(B)^* = 0 for any A, B ∈ 𝓐 with AB^* = 0 or 𝛿(A)◦B^* + A◦𝜏(B)^* = 0 for any A, B ∈ 𝓐 with A◦B^* = 0, where A◦B = AB + BA is the Jordan product.

• 한국정보통신학회논문지
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• 제26권8호
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• pp.1172-1179
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• 2022

이진 에드워즈 곡선 (Binary Edwards Curves; BEdC) 기반의 공개키 암호 시스템을 위한 점 스칼라 곱셈기 설계에 대해 기술한다. BEdC 상의 점 덧셈 (Point Addition; PA)과 점 두배 (Point Doubling; PD) 연산의 효율적인 구현을 위해 유한체 연산에 투영 좌표계를 적용하였으며, 이에 의해 점 스칼라 곱셈 (Point Scalar Multiplication; PSM)에 단지 1회의 유한체 역원 연산만 포함되어 연산성능이 향상되었다. 하드웨어 설계에 최적화를 적용하여 PA와 PD의 유한체 연산을 위한 저장 공간과 연산 단계를 약 40% 감소시켰다. BEdC를 위한 점 스칼라 곱셈기를 두 가지 유형으로 설계했으며, Type-I은 257-b×257-b 이진 곱셈기 1개를 사용하고, Type-II는 32-b×32-b 이진 곱셈기 8개를 사용한다. Type-II 설계는 Type-I 구조에 비해 LUT를 65% 적게 사용하나, 240 MHz로 동작할 때 약 3.5배의 PSM 연산시간이 소요되는 것으로 평가되었다. 따라서 Type-I의 BEdC 크립토 코어는 고성능이 필요한 경우에 적합하고, Type-II 구조는 저면적이 필요한 분야에 적합하다.

• 복식문화연구
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• 제4권3호
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• pp.373-381
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• 1996

Draping design system organized by European about 13C has been developed greatly for a long while, but for the purpose of the practical use the Dress form similar to human body has been needed. In order to make three-dimensional effect as fitting Muslin ot the Dress form. the Basic lien has to be established in Muslin and Dress form each. At this time, Shoulder-blade level is indicated from various angles : measure down 10cm from the back neck point, a quarter of the back neck point to the waist lie, the half-way point between neckline and bust line, measure down 41 inches from the back neck line, measure down 3 inches from the top edge of the muslin at center back and cross mark for neck line, and so forth. This study established the Basic line through the two ways of them (B.N.P∼B.L/2, B.N.P∼W.L/4), did tight fitting to the 5 kinds of Dress forms which ar normal type in the drop value(the difference between hip circumference and bust circumference), and acquired Basic Pattern. After the experiment, fitness are throughly investigate by statistical analysis of measurements. As a result, this study finds out that fit is proper when shoulder blade level is situated on a fourth of the back neck point to the waist line and a quarter point between back neck point and waist line, and waist dart is situated on the back center line and princess line.

• 전자공학회논문지A
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• 제33A권5호
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• pp.44-54
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• 1996

Various types of B-ISDN bearer connection can take place according to access types of endpoint equipments in call and number of connectio between endpoints. In this paper, performance of application signalling protocol on three basic facilities of B-ISDN CS-2 signalling system, such as connection of point-to-point, point-to-multipoint and multiconnection call, is evaluated and compared. For performacne evaluation, experimental model of B-ISDN application signalling protocol is implemented and respective message processing time of each process is measured. By applying message processing time to local exchange system, cal processing capacity of application signalling protocol on three basic connection types is evaluated by simulation method. In this paper, local exchange system is considered to have two ATM NNI links and four ATM UNI links.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1987년도 한국자동제어학술회의논문집; 한국과학기술대학, 충남; 16-17 Oct. 1987
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• pp.249-254
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• 1987

This paper presents a new method for generating smooth free-form surface by local correction. B-spline surface is used for its convenience of local correction, and the direction of surface correction is fixed to the average-surface-normal direction. The surface to be corrected is approximated into a uniform cubic B-spline surface. Then, the smoothness (curvature arrows, iso-parametric lines) of the approximated surface is displayed with B-spline control points. When a control point near the region that needs correction is selected, a new point 1 mm higher than the original control point in the direction of the average surface normal is displayed. And the surface is corrected by giving the amount of control point movement interactively. Since the direction of correction is given by the program and the amount of correction is selected by the user, the method is called semiautomatic. sufficiently smooth surface can be obtained by this method. Examples are given to illustrate the method.

• Nonlinear Functional Analysis and Applications
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• 제26권2호
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• pp.303-322
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• 2021

The concepts of new classes of mappings are introduced in the spaces which are more general space than the usual metric spaces. The existence and uniqueness of common fixed points and fixed point results are established in the setting of complete complex valued b-metric spaces. An illustration is given by establishing the existence of solution of periodic differential equations in the framework of a complete complex valued b-metric spaces.