• 한국지구과학회:학술대회논문집
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• 2005.09a
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• pp.213-219
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• 2005

본 연구에서는 교사의 전문성 영역의 한 부분인 학생 평가 전문성을 교사 스스로 진단해 보고 진단 결과에 대해 적절한 처방을 제공받을 수 있는 교사의 학생 평가 전문성 자기진단 프로그램을 개발하고자 하였다. 이를 위해 선행 연구와 문헌 조사를 통해 교사의 학생 평가 전문성을 구성하는 요인을 규명하고 이를 범주화하여 학생 평가 전문성 진단 도구를 구안하였다. 교사의 학생평가 전문성 구성 요인은 1990년에 미국의 AFT(American Federation of Teacher), NEA(National Education Association), NCME(National Council on Measurement in Education)가 공동으로 발표한 ‘학생 평가를 위한 교사의 평가전문성 기준(Standards for teacher competence in Educational Assessment of Student)’ 7가지를 연구자가 진단 도구 개발에 적합하도록 ${\circled1}$평가 방법의 선정, ${\circled2}$평가 도구의 개발, ${\circled3}$평가 실시?채점 및 성적 부여, ${\circled4}$평가 결과의 해석?분석?활용?의사소통의 4개 영역으로 재구성하였다. 진단도구를 개발하는데 있어서는 전문성 구성 요인별로 설문 형식의 질문에 답하고 이를 종합하여 점수를 매기는 방식보다는 구체적인 상황과 사례를 제시하고 이에 대해 평가를 해보게 하는 방식을 이용하여 평가 능력을 실질적으로 진단할 수 있게 하는데 초점을 맞추었다. 개발된 프로그램은 교사가 외부로부터 평가 받는데 소극적인 점을 감안하여 교사 스스로 자기를 진단할 수 있는 도구를 제공하고자 했으며, 진단 도구를 통해 밝혀진 결과에 대해 처방이나 안내를 함께 제공하여 교사가 자신의 평가 전문성을 제고하는데 보다 적극적으로 나설 수 있도록 도울 수 있는 프로그램으로 개발하려 하였다. 또한 이 프로그램을 교사가 활용하는 과정에 대한 조사 연구를 통해 궁극적으로는 교사의 학생 평가 전문성 신장을 위해 필요한 외부 지원이 무엇인지 추출하고 이러한 지원 체계와 교사가 능동적으로 이어질 수 있는 방안을 모색해 보고자 한다.

• Archives of design research
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• v.15 no.4
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• pp.307-316
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• 2002

Metaphor thinking is a kind of intuitive thinking and plays a central role in design process. But there are not many researches on this topic because it happens in designer's mind during design problem solving. In this paper, we considered cognitive aspects of metaphorical thinking as they cropped up in the process of design concepts development. As a method of cognitive experiment we used a protocol analysis of the design review reports. At the end of this research we concluded that metaphorical thinking is engaged in restructuring of new frames and reconciliation of conflicting frames for the development of new design ideas and concepts. This role of metaphorical thinking makes the design thinking divergent and the design process creative.

• Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
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• v.18 no.2
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• pp.23-28
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• 2004

In EIT, various image reconstruction algorithms have been used in order to compute the internal resistivity distribution of the unknown object with its electric potential data at the boundary. Mathematically the EIT image reconstruction algorithm is a nonlinear ill-posed inverse problem. In this paper, a SPSA approach is proposed for the solution of the EIT image reconstruction. Results of numerical experiments of EIT solved by the SPSA approach are presented and compared to that obtained by the modified Newton-Raphson(mNR) method.

• Journal of Korean Library and Information Science Society
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• v.46 no.4
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• pp.325-354
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• 2015

Corporate information has great value, but also poses great risk. Information governance is an organization's coordinated, inter-disciplinary approach to satisfying information compliance requirements and managing information risks while optimizing information value. This study aims to suggest the directions of implementing information governance in business firms based on analyses of Sedona Conference Principles of Information Governance. After analysing and reformulating the principles into control standards, and they are investigated and interpreted in terms of practicing information governance.

• Current Industrial and Technological Trends in Aerospace
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• v.6 no.2
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• pp.80-89
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• 2008

Photogrammetry is a non-direct 3-dimensional coordinate measurement technique using 2-dimensional photographic images. For reconstruction 3-dimensional data from the 2-dimensional photos, photogrammetry uses the fundamental principle of triangulation. Digital photogrammetry solve for the camera location and coordinates simultaneously through the mapping, scaling and bundle processing in software processing. In this paper, several applications for photogrammetry measurement are introduced, such as 'photogrammetric measurement of the gravity deformation of a cassegrain type antenna', 'analysis of photogrammetry data from ISIM mockup', 'underwater photogrammetric verification of nuclear fuel assemblies', 'spacecraft optical bench measurement' and 'spacecraft ground support equipment measurement'.

• 한국전산유체공학회:학술대회논문집
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• 2010.05a
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• pp.380-388
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• 2010

A thermal-hydraulic code, named CUPID, has been developed for the analysis of transient two-phase flows in nuclear reactor components. A two-fluid three-field model was used for steam-water two-phase flows. To obtain numerical solutions, the finite volume method was applied over unstructured cell-centered meshes. In steam-water two-phase flows, a phase change, i.e., evaporation of condensation, results in a great change in the flow field because of substantial density difference between liquid and vapor phases. Thus, two-phase flows are very sensitive to the local pressure that determines the phase change. This in turn puts emphasis on the accurate evaluation of local pressure gradient. This paper presents a new numerical scheme to evaluate the pressure gradient at cell centers on unstructured meshes. The results of the new scheme for a simple test function a gravity-driven cavity, and a wall boiling two-phase flow are compared with those of the previous schemes in the cupid code.

• Journal of the Korean Society for Precision Engineering
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• v.9 no.3
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• pp.83-101
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• 1992

A systematic method of remeshing is required due to severe mesh distortion after some finite deformation in the finite element analysis of practical forging processes. In order to cope with the problem of mesh degeneracy during deformation, the proper design of meshes plays an improtant role in the analysis. In so-called "Modular Remeshing", the physical characteristics of metal flow and geometric characteristics are incorporated in "Module", which can be applied to the mesh design for a certain mode of deformation in so far as the topology of deforming region remains the same. For the purpose of more effective and systematic use of the modular remeshing scheme, an expert system has been developed in the framework of the proposed remeshing schemel. In oredr to show the effectiveness of the method, the rib-web type forging with axial relief or radial relief and spike forging are simulated. It has been thus shown that the proposed method of automatic remeshing by using modular remeshing and expert system can be futher extended and applied to various forging problems with complicated geometrical configurations.ical configurations.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.8 no.1
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• pp.1-8
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• 2009

This paper aims mainly to reinterpretate Optimal Bus Scheduling Model by applying System Dynamics Perspective. Traditionally, the study regarding Optimal Bus Scheduling Model stems on the linear relationshp. However, this paper attempted to convert linear relationship based Optimal Bus Scheduling Model to causal loop perspective based Model. In result, the paper present Casual Loop Diagram for Optimal Bus Scheduling Model. Furthermore, the paper also ran a simulation based on Stock & Flow Diagram for Optimal Bus Scheduling Model. The outcome was not much different from the linear relationship based Model due to the similarity of the equation applied on two models.

• Journal of the Society of Naval Architects of Korea
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• v.45 no.5
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• pp.477-486
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• 2008

Numerical analysis for slamming impact phenomena has been carried out when 2-dimensional wedge shaped structure with finite deadrise angles enter the free surface by using a commertial CFD code, FLUENT. Fluid is assumed incompressible and entry speed of the structure is kept constant. Geo-reconstruct scheme (or PLIC-VOF scheme) is used for the tracking of the deforming free surface. User defined function of 6 degrees of freedom motion and moving dynamic mesh option are used for the expression of the downward motion of the structure and deforming of unstructured meshes adjacent to the structure. The magnitude and the location of impact pressure and the total drag force which is the summation of pressures distributed at the bottom of the structure are analyzed. Results of the analysis show good agreement with the results of similarity solution, asymptotic solution and the solution of BEM.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.24 no.9 s.180
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• pp.2397-2405
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• 2000

The remeshing is a method to replace a distorted mesh by a new mesh without interrupting the finite element calculation. The remeshing procedure in this paper refers to the rezoning, for which a sm oothing process is developed to alleviate the distortions of mesh. In the paper, an automatic finite element rezoning system with tetrahedral elements for large deformation analysis has been developed. Our smoothing process is composed of two steps, a surface smoothing and a volume smoothing. In the surface smoothing, checking the dihedral angle and projection on surface patch reduced the change of shape and nodes penetrating die. The constrained Laplacian smoothing has been employed for the volume smoothing process. The state variables are mapped from old mesh to new mesh by using volume coordinates within a tetrahedral element. All these procedures have been linked to the NIKE3D program As illustrated in the examples the overall strategy ensures a robust and efficient rezoning scheme for finite element simulation of metal-forming processes.