• 제목/요약/키워드: Dynamic capability

검색결과 799건 처리시간 0.025초

탐구형 소프트웨어를 활용한 기하영역의 수학화 교수학습 방법 ("Mathematising learning and teaching methods" using dynamic software in geometry)

  • 정보나;류희찬;조완영
    • 대한수학교육학회지:수학교육학연구
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    • 제12권4호
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    • pp.543-556
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    • 2002
  • The purpose of this study is to find a method to improve geometry instruction. For this purpose, I have investigated aims and problems of geometry education. I also reviewed related literature about discovery methods as well as verification. Through this review, “Mathematising teaching and learning methods” by Freudenthal is Presented as an alternative to geometry instruction. I investigated the capability of dynamic software for realization of this method. The result of this investigation is that dynamic software is a powerful tool in realizing this method. At last, I present one example of mathematic activity using dynamic software that can be used by school teachers.

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Dynamic performance using artificial intelligence techniques and educational assessment of nanocomposite structures

  • Han Zengxia;M. Nasihatgozar;X. Shen
    • Steel and Composite Structures
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    • 제53권1호
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    • pp.115-121
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    • 2024
  • The present paper deals with a comprehensive study about dynamic performance and educational economic assessment of nanocomposite structures, while it focuses on truncated conical shells. Advanced structure dynamic behavior has been analyzed by means of AI techniques, which allow one to predict and optimize their performances with good accuracy for different loading and environmental conditions. The incorporation of the AI method significantly enhances the computational efficiency and is a powerful tool in designing nanocomposites and for their structural analysis. Further, an educational assessment is provided in the context of cost and practicality related to such structures in engineering education. This study showcases the capabilities of AI-enabled methods with regard to cost reduction, improvement of structural efficiency, and enhancement of learning engagement for students through certain practical examples on state-of-the-art nanocomposite technology. The results also confirm a remarkable capability of artificial intelligence regarding the optimization of both dynamic and economic aspects, which could be highly valued for further development of nanocomposite structures.

타이어의 동특성 분석을 위한 소프트웨어 개발 (Software Development for Analysis of Dynamic Characteristics on Tires)

  • 박찬원;윤대원;박종연;장목순
    • 산업기술연구
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    • 제13권
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    • pp.71-80
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    • 1993
  • To analyze dynamic characterics for a motorcar, the creating and the hammering test methods are introduced. This paper has studied the method of computing the natural frequency of the impulse wave on a tire, the decay constant which determines the absorption capability for the impulsive force. Moreover we have examined the reliability for the decay constant calculated, in this paper theoritical results are agreed with the simulated ones.

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가변구조제어에 의한 조준경 고각 안정화 (Stabilization of elevation for gunner primary sight using variable structure control)

  • 김중완;이정규;김주상;이만형
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 26-27 Oct. 1990
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    • pp.643-647
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    • 1990
  • Gunner primary sight(GPS) stabilization system lays line of sight(LOS) to find out a target and transmits informations to the fire control system (FCS). In a moving vehicle, accuracy of LOS and FCS depends on the design of GPS and servomechanism system. The heavy vibration of vehicle on the severe off-road environment degenerates the stabilization capability of GPS. In this study, to stabilize of elevation for GPS using the variable structure control, we derived the dynamic equation of GPS system and designed the variable structure controller. Computer simulation results fulfilled the static and dynamic stability of GPS using the variable structure control.

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타이어의 동특성(動特性) 분석(分析)에 관한 연구(硏究) (A Study on Dynamic Characteristics of Tire)

  • 장목순;박종연
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 1993년도 하계학술대회 논문집 A
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    • pp.467-469
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    • 1993
  • To analyze dynamic characteristics for a motorcar, the creation and the hammering test methods are introduced. This paper has studied the method of computing the natural frequency of the impulse wave on a tire, the decay constant which determines the absorption capability for the impulsive force. Moreover we have examined the reliability for the decay constant calculated, in this paper theoritical results are agreed with the simulated ones.

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Micro-Grid 시스템의 동특성 해석에 관한 기초 연구 (A Study on the Dynamic Analysis of Micro-Grid System)

  • 손광명;이계병;전인수
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2007년도 제38회 하계학술대회
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    • pp.543-544
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    • 2007
  • Micro-grid consists of micro-sources which adopt environmentally friendly and reliable power sources with independent real and reactive power control capability for providing premium power quality. This paper presents dynamic modeling and the stable operating range of the micro-grid system varying the parameters of the micro-sources. Case study results show the parameters affecting the stability of the micro-grid and the stable operating range of the micro-sources.

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Performance Evaluation of Slotless Permanent Magnet Linear Synchronous Motor Energized by Partially Excited Primary Current

  • Jung, Sang-Yong;Chun, Jang-Sung;Jung, Hyun-Kyo
    • KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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    • 제11B권3호
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    • pp.86-92
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    • 2001
  • This paper is presented for evaluating the performance of slotless Permanent Magnet Linear Synchronous Motors (PMLSM) Which is energized by partially excited primary current. Especially the influence of end-effect due to the moving magnet is investigated in detail. Also partial excitation of primary current for better efficiency and its switching behavior are suggested Capability of PMLSM which is related to speed-force feasibility judging whether motor can meet the desired specifications in the dynamics are investigated. Furthermore control characteristics of PMLSM are considered to verify the validity of dynamic capability in running condition.

효과적 지식창출을 위한 조직능력 요건: 퀴놀론계 항생제 개발 사례를 중심으로 (Organizational Capabilities for Effective Knowledge Creation: An In-depth Case Analysis of Quinolone Antibacterial Drug Discovery Process)

  • 이춘근;김인수
    • 지식경영연구
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    • 제2권1호
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    • pp.109-132
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    • 2001
  • The purpose of this article is to develop a dynamic model of organizational capabilities and knowledge creation, and at the same time identify the organizational capability factors for effective knowledge creation, by empirically analyzing the history of new Quinolone antibacterial drug compound (LB20304a) discovery process at LG, as a case in point. Major findings of this study are as follows. First, in a science-based area such as drug development, the core of successful knowledge creation lies in creative combination of different bodies of scientific explicit knowledge. Second, the greater the difficulty of learning external knowledge, the more tacit knowledge is needed for the recipient firm to effectively exploit that knowledge. Third, in science-based sector such as pharmaceutical industry, the key for successful knowledge creation lies in the capability of recruiting and retaining star scientists. Finally, for effective knowledge creation, a firm must keep its balance among three dimensions of organizational capabilities: local, process, architectural capabilities.

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과도 안정도를 고려한 수송능력 산정 알고리즘의 개발에 관한 연구 (A Study on Development of Power Transfer Capability Calculation Algorithm Considering Transient Stability)

  • 김용하;이범;최상규;조성린;이재걸;오석현;김동근
    • 대한전기학회:학술대회논문집
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    • 대한전기학회 2003년도 하계학술대회 논문집 A
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    • pp.95-97
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    • 2003
  • The cost losing synchronous through a transient instability is extremely high in modern power systems. This paper presents a power transfer capability calculation algorithm considering transient stability. The theoretical development is straightforward: dynamic equations are converted to numerically equivalent algebraic equation and then integrated into the standard formulation for power transfer capability calculation.

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과도 안정도를 고려한 수송능력 산정 알고리즘의 개발에 관한 연구 (A Study on Development of Power Transfer Capability Calculation Algorithm Considering Transient Stability)

  • 김용하;최상규;이범;조성린;오석현;김동근
    • 대한전기학회논문지:전력기술부문A
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    • 제55권1호
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    • pp.24-28
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    • 2006
  • This paper presents a power transfer capability calculation algorithm considering transient stability, The theoretical development is straightforward: dynamic equations are converted to numerically equivalent algebraic equation and then integrated into the standard formulation for power transfer capability calculation. The proposed method is applied to IEEE-24 Reliability Test System and the results shows the effectiveness of the method.