• 컴퓨터교육학회논문지
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• 제14권1호
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• pp.13-21
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• 2011

본 연구의 목적은 CL(Computatioanl Literacy) 교육에서 중요한 교육 내용인 프로그래밍 문제해결 과정을 규명하는데 있다. 프로그래밍 초보학습자들의 인지적 사고과정 분석을 통해 프로그래밍 문제해결 과정에서 나타나는 사고 특성을 조망하는 분석틀을 제시하고, 실제 CL 문제해결 과정에서의 초보학습자들의 사고과정을 규명하는 것이다. 이를 위해 사고발성법을 적용하여 프로그래밍 과정에서 나타나는 여러 상황을 분석하였다. 본 연구에서는 학생들의 사고 특성을 추출하는 분석코드와 프로그래밍 과정 코드를 이용한 코딩조직를 개발하였고, 프로그래밍 과정에서 겪는 어려움과 이를 해결하는 과정을 Nvivo를 사용하여 종합적으로 분석하였다. 특히 프로그래밍 과정에서 나타나는 사고력의 활용에 대한 분석과 시사점을 제시하였다. 본 연구는 프로그래밍 과정에서 나타나는 인지적 사고 특성과 흐름을 이해하는데 기여하며 프로그래밍에서의 사고 과정을 과학적으로 분석할 수 있는 준거를 제시한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 전기.전자공학 학술대회 논문집(II)
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• pp.1129-1132
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• 1987

This paper introduces distributed processes- a new language concept for concurrent programming. It is proposed for real-time applications controlled by computer network with distributed storage. These processes communicate and syschronize by means of procedure calls and guarded regions. The paper gives several examples of distributed processes.

• 한국정밀공학회지
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• 제13권4호
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• pp.34-42
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• 1996

Robot programming has been discussed in detail during the recent years. Numerous studies in particular presented relevance, solution concepts and implementation of off-line programming. In this paper a new user-friendly robot programming method is introduced, which permits the implicit description and programming of assembly process. On the functional level of programming, the assembly processes are described in terms of their operational functions. On the language level, the individual functions are then translated into commands for the robots.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 전기.전자공학 학술대회 논문집(II)
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• pp.1133-1136
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• 1987

In designing and implementing of a distributed system, a programming language which can describe and implement the various interactions between distributed processes in distributed systems is indispensible. High level language constructs such as concurrency. process synchronization between distributed processes and mutually exclusive access to common data could be built in a distributed programming language under the proper support of a language kernel. In this paper, we studied the language constructs a distributed programming language must have and specified the kernel supports necessary in implementing that high level language constructs.

• 대한전자공학회논문지
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• 제26권11호
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• pp.1804-1812
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• 1989

Recently, as the configuration of computer systems are changed to the system equipped with several processors, operating system to support these systems has been needed. The purpose of this paper is to implement concurrent execution of processes as synchronization mechanism by using concurrent programming language, pascal-s. In this paper, concurrnecy of processes is represented

• Structural Engineering and Mechanics
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• 제15권6호
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• pp.669-683
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• 2003

The stochastic optimal nonlinear control of coupled adjacent building structures is studied based on the stochastic dynamical programming principle and the stochastic averaging method. The coupled structures with control devices under random seismic excitation are first condensed to form a reduced-order structural model for the control analysis. The stochastic averaging method is applied to the reduced model to yield stochastic differential equations for structural modal energies as controlled diffusion processes. Then a dynamical programming equation for the energy processes is established based on the stochastic dynamical programming principle, and solved to determine the optimal nonlinear control law. The seismic response mitigation of the coupled structures is achieved through the structural energy control and the dimension of the optimal control problem is reduced. The seismic excitation spectrum is taken into account according to the stochastic dynamical programming principle. Finally, the nonlinear controlled structural response is predicted by using the stochastic averaging method and compared with the uncontrolled structural response to evaluate the control efficacy. Numerical results are given to demonstrate the response mitigation capabilities of the proposed stochastic optimal control method for coupled adjacent building structures.

• 전자공학회논문지A
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• 제32A권11호
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• pp.63-69
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• 1995

A novel programming architecture for antifuse FPGA(Field Programmable Gate Array) is described. This architecture prevents programming transistors from breakdown which occurs due to high voltage across the transistors during antifuse programming. Extra mask and processes can be avoided using this proposed architecture. To reduce the applied voltage across the terminals of programming transistors, different voltage ranges are supplied to vertical and horizontal tracks; between programming voltage Vp and Vp/2 for vertical tracks and between Vp/2 and 0V for horizontal tracks. Therefore, Maximum voltage across the programming transistors is half of the programming voltage and an designated antifuse can be programmed by applying maximum voltage for vertical track and minimum voltage for horizontal track while others are subjected to voltage difference below Vp/2.

• 한국생산제조학회지
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• 제7권2호
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• pp.29-39
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• 1998

A conversational programming system for turning processes was studied to enhance the user friendliness of a NC Lathe by adopting man-machine interface functions through Delphi programming tool under the Windows 95 environment. Functions of tool collision checking were developed through zone limitation algorithms. Final shape of workpiece was generated by means of tree structure algorithm. Shop floor programming performance was incorporated in the developed CAM module. In order to increase flexibility of the man-machine interface, graphic based programming tools have been developed. A NC turning machine equipped with an open architecture PCNC was used as a test bed of the system. Performance of the system was verified through case studies.

• 한국가스학회:학술대회논문집
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• 한국가스학회 2005년도 춘계학술대회 및 특별심포지움
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• pp.221-221
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• 2005

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.1191-1194
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• 1995

A conversational programming system for turning processes was studied to enhance the user friendlness of an NC by adopting man-machine interface functions through Visual C $^{++}$ programming tool under the Windows 95 environment. Shop floor programming performance was incorporated in the developed CAM module. In order to increase flexibility of the man-machine interface, graphic based programmin tool have been developed. An NC turning machine equipped whit an open architecture PCNC was used as a test bed of the system. Perfomance of the system was verified through case studies..