• 제목/요약/키워드: Convergence-type

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ADHD 아동의 유형별 시각 기능의 문제 발생률에 대한 융복합적 접근 (Convergence Approach to the Incidence of Visual Function Problems by the Type of ADHD in Children)

  • 조형철;노효련
    • 한국융합학회논문지
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    • 제12권2호
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    • pp.113-120
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    • 2021
  • 본 연구는 시각적인 장애를 호소하는 ADHD로 진단받은 아동의 유형별 시각 기능의 특징을 확인하고자 하였다. 연구 대상자는 ADHD로 진단받은 아동 49명으로 시각기능이 정상범위에서 벗어난 경우이다. Korean-ADHD Rating Scale을 이용하여 ADHD 유형을 알아보았고 시각기능 검사를 통해 시각 기능의 문제를 알아보았다. 시각의 문제를 가지고 있는 ADHD 아동들은 부주의 유형(69.4%)이 가장 많았으며 시력은 좋지만 시각 기능 문제가 드러난 경우도 50% 정도 되었다. 주의력결핍 유형에서 근시 관련 시각장애, 과잉활동형 유형에서 난시 관련된 시각장애가 높게 나타났다. 버전스 기능 장애에서는 폭주부족이 가장 많았으며 유형별 차이는 나타나지 않았다. ADHD 아동의 유형별 시각장애의 특성은 차이가 나타나므로 시각 기능 장애의 검사와 선별을 통해 아동의 문제행동에 접근하는 것이 필요하다.

APPROXIMATION BY GENUINE LUPAŞ-BETA-STANCU OPERATORS

  • KUMAR, ALOK;VANDANA, VANDANA
    • Journal of applied mathematics & informatics
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    • 제36권1_2호
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    • pp.15-28
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    • 2018
  • In this paper, we introduce a Stancu type generalization of genuine LupaŞ-Beta operators of integral type. We establish some moment estimates and the direct results in terms of classical modulus of continuity, Voronovskaja-type asymptotic theorem, weighted approximation, rate of convergence and pointwise estimates using the Lipschitz type maximal function. Lastly, we propose a king type modification of these operators to obtain better estimates.

A COMPARATIVE STUDY BETWEEN CONVERGENCE RESULTS FOR NEWTON'S METHOD

  • Argyros, Ioannis K.;Hilout, Said
    • 한국수학교육학회지시리즈B:순수및응용수학
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    • 제15권4호
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    • pp.365-375
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    • 2008
  • We present a new theorem for the semilocal convergence of Newton's method to a locally unique solution of an equation in a Banach space setting. Under a gamma-type condition we show that we can extend the applicability of Newton's method given in [12]. We also provide a comparative study between results using the classical Newton-Kantorovich conditions ([6], [7], [10]), and the ones using the gamma-type conditions ([12], [13]). Numerical examples are also provided.

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Effect of annealing temperature on the electrical characteristics of P-doped ZnO thin films

  • Kim, Jun-Kwan;Lim, Jung-Wook;Kim, Hyun-Tak;Kim, Sang-Hun;Yun, Sun-Jin
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1622-1624
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    • 2007
  • In order to realize effective p-type doping in ZnO thin films, ZnO films were deposited on P-doped Silayers by RF-magnetron sputter deposition technique and annealed at various temperatures. The result indicated that ZnO film annealed at $700^{\circ}C$ showed p-type conduction with a high carrier concentration in the order of $10^{19}\;cm^{-3}$.

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Density by Moduli and Korovkin Type Approximation Theorem of Boyanov and Veselinov

  • Bhardwaj, Vinod K.;Dhawan, Shweta
    • Kyungpook Mathematical Journal
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    • 제58권4호
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    • pp.733-746
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    • 2018
  • The concept of f-statistical convergence which is, in fact, a generalization of statistical convergence, has been introduced recently by Aizpuru et al. (Quaest. Math. 37: 525-530, 2014). The main object of this paper is to prove an f-statistical analog of the classical Korovkin type approximation theorem of Boyanov and Veselinov. It is shown that the f-statistical analog is intermediate between the classical theorem and its statistical analog. As an application, we estimate the rate of f-statistical convergence of the sequence of positive linear operators defined from $C^*[0,{\infty})$ into itself.

HÖLDER CONVERGENCE OF THE WEAK SOLUTION TO AN EVOLUTION EQUATION OF p-GINZBURG-LANDAU TYPE

  • Lei, Yutian
    • 대한수학회지
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    • 제44권3호
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    • pp.585-603
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    • 2007
  • The author studies the local $H\ddot{o}lder$ convergence of the solution to an evolution equation of p-Ginzburg-Landau type, to the heat flow of the p-harmonic map, when the parameter tends to zero. The convergence is derived by establishing a uniform gradient estimation for the solution of the regularized equation.

체육교육에 대한 대학생들의 융합적 인식 연구 (The Study on the Convergence Perception of College Students for the Physical Education.)

  • 유영설
    • 한국융합학회논문지
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    • 제9권7호
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    • pp.125-133
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    • 2018
  • 본 연구는 체육교육에 대한 대학생들의 융합적 인식을 탐색하여 체육교육에 대한 반성적 자료를 얻는데 목적이 있다. 이를 위해 인간의 주관적 인식을 탐색할 수 있는 방법인 Q방법론을 활용하였다. 연구대상은 대학생 30명으로 하였다. 연구결과 4개의 유형이 탐색되었다. 첫째, '전문성 강조형'으로 정의한 유형 1은 체육수업에서 보다 전문적인 종목별 운동기능과 기본 체육이론의 중요성을 강조하였다. 둘째, '교수방법 강조형'으로 정의한 유형 2는 학생들의 적극적인 참여를 유도하기 위해 효율적인 교수방법의 중요성을 강조하였다. 셋째, '필수과목 요구형'으로 정의한 유형 3은 체육교육의 필수과목요구와 체육수업시수의 증대 등을 강조하였다. 넷째, '생활체육 강조형'으로 정의한 유형 4는 체육교육은 원활한 사회생활을 위한 체력증대 및 사회성 함양 그리고 생활체육과 연계성을 강조하였다. 본 연구결과는 체육교육에 대한 반성적 자료를 제공함으로서 효과적인 체육교육계획을 수립하는데 기여할 것이다.

ON THE CONVERGENCE OF INEXACT TWO-STEP NEWTON-TYPE METHODS USING RECURRENT FUNCTIONS

  • Argyros, Ioannis K.;Hilou, Said
    • East Asian mathematical journal
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    • 제27권3호
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    • pp.319-337
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    • 2011
  • We approximate a locally unique solution of a nonlinear equation in a Banach space setting using an inexact two-step Newton-type method. It turn out that under our new idea of recurrent functions, our semilocal analysis provides tighter error bounds than before, and in many interesting cases, weaker sufficient convergence conditions. Applications including the solution of nonlinear Chandrasekhar-type integral equations appearing in radiative transfer and two point boundary value problems are also provided in this study.

인명 구조용 로봇의 패들형 말단 장치 설계 및 구현 (Design and Implementation of Paddle Type End of Arm Tool for Rescue Robot)

  • 김현중;이익호;안진웅
    • 로봇학회논문지
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    • 제13권4호
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    • pp.205-212
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    • 2018
  • This paper deals with the paddle type end of arm tool for rescue robot instead of rescue worker in dangerous environments such as fire, earthquake, national disaster and defense. It is equipped at the dual arm manipulator of the rescue robot to safely lift up an injured person. It consists of the paddle for lifting person, sensors for detecting insertion of person onto the paddle, sensor for measuring the tilting angle of the paddle, and mechanical compliance part for preventing incidental injuries. The electronics is comprised of the DAQ module to acquire the sensors data, the control module to treat the sensors data and to manage the errors, and the communication module to transmit the sensors data. After optimally designing the mechanical and electronical parts, we successfully made the paddle type end of arm tool and evaluated its performance by using specially designed jigs. The developed paddle type end of arm tool is going to be applied to the rescue robot for performance verification through field testing.

Noble Development of Array Type Gripper for Robot Arm

  • Lee, Jaeman;Lee, Wangheon
    • 한국산업융합학회 논문집
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    • 제25권2_1호
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    • pp.185-193
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    • 2022
  • For grippers of industrial robots, parallel grippers and multi-function finger grippers are used. The former has the advantage of low cost but has the disadvantage of low precision, and the latter has the advantage of excellent precision but has the disadvantage of being expensive. In this paper, we developed a grip that can detects the various shapes of the object to be gripped on the gripper surface by using mesured pressure information frome Veloset Sheet sensor so that the gripper can be gripped without deforming the surface of the gripper. Also we did not only developed the array type gripper and 4 array type grippers (ATG), but also confirmed the usefulness of array type gripper developed in this study according to the 4 predefined evaluation criteria