• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 2003년도 춘계학술대회 논문집
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• pp.1471-1474
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• 2003

The correlation between the object function and the design parameter is shown on this paper by using the characteristic function for tile mixed result of the structure analysis. tile buckling analysis and the table of orthogonal array according to the original crane's dimensional change. About the above two object functions, the effective of design change according to the change of design parameters could be estimated. Also, the crane's weight is reduced up to 20.58 percent maintaining the structural stability according to the thickness of plate.

• 한국가구학회지
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• 제12권2호
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• pp.61-71
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• 2001

In furniture design, it is very important to choose adequate materials. Transparent materials provide expectations and reveals unique effects unlike others. As transparent materials, glass and acrylic have light and fresh impression from their transparency, and are frequently used in structuring neat space. Despite its good merits, glass is not able to satisfy designers desire in making various shape and structure. It has defect in manufacturing process because it requires professional, specialized studio. Compared to glass, acrylic has its merit in processing and stability, and also is very economical. Acrylic is easily used with woodworking tool. In addition, acrylic has unique texture. This study is on the attempt to apply acrylic to the furniture as artistic element.

• Nuclear Engineering and Technology
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• 제35권5호
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• pp.442-453
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• 2003

This study investigates the safety assessment of the potential for fretting-wear damages on steam generator (SG) U-tubes caused by foreign object in operating nuclear power plants. The operating SG shell-side flow field conditions are obtained from three-dimensional SG flow calculation using the ATHOS3 code. Modal analyses are performed for the finite element modelings of U-tubes to get the natural frequency, corresponding mode shape and participation factor. The wear rate of U-tube caused by foreign object is calculated using the Archard formula and the remaining life of the tube is predicted. Also, discussed in this study is the effect of the flow velocity and vibration of the tube on the remaining life of the tube.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2008년도 추계학술대회A
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• pp.1594-1599
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• 2008

Haptic rendering is a process that provides force feedback during interactions between a user and an object. This paper presents a haptic rendering technique for a telemanipulation system of deformable objects using image processing and physically based modeling techniques. The interaction forces between an instrument driven by a haptic device and a deformable object are inferred in real time based on a continuum mechanics model of the object, which consists of a boundary element model and ${\alpha}$ priori knowledge of the object's mechanical properties. Macro- and micro-scale experimental systems, equipped with a telemanipulation system and a commercial haptic display, were developed and tested using silicone (macro-scale) and zebrafish embryos (micro-scale). The experimental results showed the effectiveness of the algorithm in different scales: two experimental systems applied the same algorithm provided haptic feedback regardless of the system scale.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2005년도 춘계학술대회 논문집
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• pp.106-111
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• 2005

LCC(Launch Control Center) in NARO Space Center perform a data monitoring and control through the interface to the external system of launch vehicle. Launch Control function needs a high reliability and processing speed. Hence, LCC's remote control system configure a real time system. An important role of the Simulation system is discovering a risk element and minimize it When developing a launch control system. Also, secure a development technique to solve the risks. Launch Vehicle simulator is composed of various component at characteristic of the Launch Vehicle. To be like this each function component the developer will be able to develop easily in order, it using the LabVIEW which is a Graphical Program and it programs, The LabVIEW GOOP(Graphical Object-orinted Programming) which supports an Object-orinted programming it uses with the Component it develops will have a strong point which reusability and a unit test, maintenance, size of program and individual developments.

• 대한수학교육학회지:학교수학
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• 제18권3호
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• pp.441-455
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• 2016

수학 학습이 구체물이나 친숙한 상황을 다양하게 제시해주는 것으로부터 시작되어야 한다는 입장은 CSA(Concrete-Semiconcrete-Abstract)라는 이름으로 잘 알려져 있다. 이에 비하여 최근 Kaminski 등의 연구는, 다양한 맥락을 가진 구체물로 수학적 개념을 학습하는 것보다 추상적인 개념을 먼저 학습하는 것이 지식의 전이 측면에서 효과적일 수 있음을 주장한다. 본고에서는 이러한 상반된 관점을 고려하여, 구체물, 반구체물, 추상적 개념의 지도순서를 다르게 적용한 수업을 분석하고 그 교육적 시사점을 확인하고자 하였다. 연구 결과 구체물로 시작하여 개념을 도입한 수업은 수학에 대한 긍정적인 태도를 가지게 한 것으로 보였으나 그 효과가 지속적이지는 않았으며, 성취도 면에서도 유의미한 차이를 보이지 않았고, 오히려 구체물이 가지는 과도한 구체성으로 인해 오류를 보이는 경우가 관찰되었다. 이러한 오류는 반구체물로 개념을 도입한 수업에서는 발견되지 않았는데, 이는 비본질적 요소가 사상된 반구체물이 추상적인 개념 학습에 효율적으로 사용될 수 있음을 시사한다.

• 정보관리학회지
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• 제22권4호통권58호
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• pp.97-109
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• 2005

본 연구에서는 정보자원의 메타데이터 작성시 메타데이터 간 의미의 일관성을 유지하기 위한 메타데이터 명명 방법론과 이를 실제 분야에 적용할 수 있는 메타데이터 명명 규칙의 실험적 모형을 제시하였다. 이를 위해 우선적으로 ISO/IEC 11179에서 제시하고 있는 메타데이터 레지스트리 메타모형과 데이터의 기본 속성 및 개념을 논의하였으며, 이러한 논의를 토대로 객체용어(object term)와 속성용어(property term) 및 표현(presentation)에 관한 명명 규칙의 실제 적용 사례를 제시하였다. 객체용어의 생성은 자료유형의 엔터티-관계(I-R) 모형에 근거한 휴리스틱 분석을 통해 이루어졌으며, 속성용어의 명명은 더블린코어의 메타데이터 셋을 기반으로, 표현은 SHOE 1.0 버전을 기반으로 하였다.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2002년도 가을 학술발표회 논문집
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• pp.70-77
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• 2002

Since our physical world cannot be modeled as rigid body, deformable object models are important. For real-time simulation of elastic object, it must be guaranteed by its exact solution and low-latency computational cost. In this paper, we describe the boundary integral equation formulation of linear elastic body and related boundary element method(BEM). The deformation of elastic body can be effectively solved with 1ow run-time computational costs, using precomputed Green Function and fast low-rank updates based on Capacitance Matrix Algorithm.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1997년도 하계학술대회 논문집 A
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• pp.198-200
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• 1997

This paper consider a simple Nondestructive Testing(NDT) having eddy currnt effect. We analyzed the two dimension modeling of alternative magnetic field. eddy current with voltage source. And, the current magnitude and phase data obtained from each different frequency five object position is used for learning the neural network. Therefore, we can recognize an object position pattern from new input current magnitude, phase data.

• 한국해양공학회지
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• 제31권3호
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• pp.233-240
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• 2017

Subsea structures are always vulnerable to accidental risks induced by fishing gear, dropped objects, etc. This paper presents the design of a subsea manifold protective structure that protects against dropped object impacts. Probable dropped object scenarios were established considering the shapes and masses of the dropped objects. A design layout for the manifold protective structure was proposed, with detailed scantlings and material specifications. A method applicable to the pipelines specified in DNV-RP-F107(DNV, 2010) was applied to calculate the annual probabilities of dropped objects hitting the subsea manifold. Nonlinear finite element analyses provided the structural consequences due to the dropped object impacts such as the maximum deflections of the protective structure and the local fracture occurrences. A user-subroutine to implement the three-dimensional fracture strain surface was used to determine whether local fractures occur. The proposed protective structure was shown to withstand the dropped object impact loads in terms of the maximum deflections, even though local fractures could induce accelerated corrosion.