• 한국수학교육학회지시리즈E:수학교육논문집
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• 제32권4호
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• pp.477-493
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• 2018

교과서 저자들은 여러 나라의 교과서 및 교수 학습 자료들을 참고하여 2015 개정 교육과정에서 강조하고 있는 역량들을 담아내고자 하였다. 문제해결, 추론, 의사소통 역량은 2009 개정 교육과정에서 수학적 과정 요소로 이미 강조되어 왔으며, 정보 처리 역량의 경우에는 이전 교육과정부터 계산기와 컴퓨터 사용이 교수 학습 방법 부문에 명시되어 있다(교육부, 2009). 또, 태도 및 실천은 다른 역량과 달리 정의적 영역의 특성을 갖는바, 문제 해결 과정에서 이 역량을 판단하는 것은 쉽지 않다. 그렇다면, 2015 개정 교육과정에 좀 더 관심을 기울이고 새롭게 반영해야 할 역량으로 창의 융합을 들 수 있다. 한편, 2015 개정 수학과 교육과정의 중학교 1학년에 '다양한 상황을 그래프로 나타내고, 주어진 그래프를 해석할 수 있다'는 성취기준이 도입되었다. 교과서마다 주어지는 문제 상황도 다양할 것이고 주어지는 그래프의 유형도 다를 것이다. 본 연구에서는 총 10종의 중학교 1학년 수학 교과서의 그래프 단원을 대상으로 수학 교과서에서의 창의 융합 역량 요소의 반영 현황을 살펴보고자 하였으며, 이를 위하여 선행 연구를 토대로 창의 융합 역량의 하위 요소로 생산적 사고, 독창적 사고, 여러 가지 방법으로 해결, 수학 내적 연결, 수학 외적 연결의 5가지 요소를 선정하여 적용하였다.

• KIEE International Transaction on Electrical Machinery and Energy Conversion Systems
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• 제5B권3호
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• pp.238-242
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• 2005

In this paper, a surface permanent magnet motor made of the Soft Magnetic Composites (SMC) is analysed using the 3-D finite element method. By comparing with the motor made of the silicon steel sheets, the usefulness of the SMC for the eddy current loss is clarified quantitatively.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1991년도 추계학술발표회 논문집 지반공학에서의 컴퓨터 활용 COMPUTER UTILIZATION IN GEOTECHNICAL ENGINEERING
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• pp.62-74
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• 1991

The stability of the Carsington dam at Derbyshire in middle Eng1and is analysed using the Kinematical Element Method (Program LSDKSLOP). The thin yellow clay layer and the pore pressure at the failure surface, which goes through the core and boot, are considered. The influence of the pre-existing shears of the yellow clay on the stability of the Carsington dam is studied. Comparisons with the calculated and the observed failure surface are presented.

• 대한전기학회논문지
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• 제35권12호
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• pp.567-572
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• 1986

In this paper, a new type of step motor with two degree of mechanical freedom, which is named rotary-Linear Step Motor(RLSM), is presented. Its rotor axis can perform linear and rotary motions either separately or simultaneously. This paper discribes the design of RLSM using finite element method in which the magnetic saturation effect of the iron core is taken into account. The design parameters such as torques, forces and inductances are obtained from the computed magnetic vector potentials. A new type of Rotary-Linear Step Motor was constructed. The calculated parameters agree well with measurements.

• 대한전기학회논문지:전기기기및에너지변환시스템부문B
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• 제48권4호
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• pp.187-193
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• 1999

This study investigates the hysteresis phenomena of a Synchronous Reluctance Motor (SynRM) using coupled FEM and Preisach modeling. Preisach's model, which allows accurate prediction of hysteresis, is adopted in this procedure to provide a nonlinear solution. the computer simulation and experimental result for the i$\lambda$loci show the propriety of the proposed method.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2002년도 가을 학술발표회 논문집
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• pp.39-44
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• 2002

A three node triangular element with drilling rotations incorporating Improved Layerwise Zig-zag Theory(HZZT) is developed to analyze the vibration of spinning pretwisted composite blades with embedded damping layer. Matching conditions at the interfaces between the damping material and the border material are enforced by setting the shear forces matched and different shear strains along the interfaces. The natural frequencies and modal loss factors of cantilevered pretwisted composite blade with damping core are calculated with the present triangular element enforcing the matching conditions and compared to experimental results and MSC/NASTRAN results using a layered combination of plate and solid elements.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부A
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• pp.55-57
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• 1998

A finite element analysis for a synchronous reluctance motor (SynRM) is presented with emphasis on the effect of saturation and iron losses. Preisachs model, which allows accurate prediction of iron losses, is adopted in this procedure to provide a nonlinear solution. This technique provide significant properties of proposed SynRM under the magnetic saturation and iron losses effect.

• 한국자기학회지
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• 제5권5호
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• pp.837-840
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• 1995

Finite element analysis using two dimensional magnetic permeabillity tensor that can represents phase lag between magnetic field intensity and flux density under rotational flux is examined. Considered problem is confined to two dimensional magnetostatic case. And we applied proposed method to calculate the core loss of the test model and compare the result with that of experiment.

• 수산해양교육연구
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• 제25권4호
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• pp.898-914
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• 2013

The fusion type human resources, it is a new human resources to scientific and technical information society of the future demands, and means to enjoy life with a creativity and expertise of fusion of various fields, to communicate in consideration of others. Fusion human resource education(STEAM), of "human resources to practice respect and compassion", "human resources equipped with communication skills", "human resources to pursue creativity and innovation" "human resources to understand the knowledge of the fusion to take advantage" in training I have presented to the area of core competence of the 4C 'Creativity"," Communication","Convergence', 'Caring'. In this study, the area of c ore competency for each element by elementary, middle, and high schools around the analysis of the target can be made by each school level to develop a practical program in the sense of basic research is to conduct. The findings are as follows: First, Area of Creativity, communication area, the contents fusion region, as well as care areas, to the detailed item capacity, the design of the class that contains the entire area should be performed. Second, Elementary and secondary school level analysis, design of the class containing the entire region up to capacity detail is required. High school was required study of school full of normal. Third, In general, for STEAM class environment and teaching model was developed by applying operations. Research and methods of teaching a wider variety of form was required. Later in this study is to develop programs and organize. and It intends to become the base to be able to interest and interest in science education by structured around the status of problems that can be found in the life of around themes STEAM.

• 지질공학
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• 제19권1호
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• pp.89-98
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• 2009

암반내의 핵석의 존재는 불안전한 요소로 작용하고 있으며 특히, 절개사면의 경우 노출이 되지 않더라도 핵석이 풍화정도의 차이에 따라 사면의 불연속면 증가 또는 강도 감소가 되며 사면의 낙석이나 붕괴등 사면 거동의 중요한 요소로 작용한다. 연구대상 사면은 20여년전 절개가 완료되어 일부분 사면보강을 완료하였으나 적은 강우에도 잦은 낙석이 발생하여 항구적인 안정대책이 시급한 실정이었다 탄성파탐사와 사면지질조사 견과를 비교 분석하여 핵석의 분포특성 및 규모를 파악할 수 있었다. 또한 주변 암반사면에서 DIPS 프로그램을 이용한 평시투영을 실시하여 주변 풍화토 사면에서의 핵석 분포특성 및 규모 파악에 대하여 검토하였다.