• 컴퓨터교육학회논문지
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• 제8권6호
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• pp.75-83
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• 2005

본 논문에서는 외국어 학습 영역인 영어 듣기와 말하기 평가를 웹과 VoiceXML 기반 교육 평가 시스템을 이용하여 장소와 시간적 제한을 받지 않고 평가하는 방법을 연구하였다. VoiceXML 기반교육 평가 시스템은 사용자 등록 모듈, 평가 모듈, 평가 결과 모듈로 구성된다. 사용자 등록 모듈은 사용자 이름과 아이디, 비밀번호를 사용자 데이터베이스에 등록하여, 학습자가 평가를 하기 위해 전화를 했을 때 vxml 시나리오에 의해 제공되어지는 음성을 듣고 로그인을 하여 사용자를 확인할 수 있도록 하였다. VoiceXML 기반 전화 평가 시스템에서 출제자는 문제 출제와 평가, 평가 결과를 얻기 위한 시간, 노력을 경감할 수 있으며, 학습자는 언제 어디서나 유무선 전화기를 이용하여 VoiceXML 마크업 언어로 제공되는 시나리오에 의해 대화형 음성으로 제공되는 평가 문항을 듣고 직접 음성으로 평가함으로써 외국어 학습에 대한 효과를 올릴 수 있다.

• Journal of international Conference on Electrical Machines and Systems
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• 제1권3호
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• pp.321-329
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• 2012

Providing variable load for testing a motor in high speed conditions is usually a difficult task. The eddy current brake can be used in application of load testing of motors. This paper deals with construction of a novel claw pole eddy current brake which is employed as a load for a DC counter rotating motor (CRM). These kinds of motors have two inner and outer shafts that rotate in opposite directions simultaneously, which are particularly suitable for under water propulsion systems. The prototype 45KW eddy current brake consists of two parts. One of them is installed on the inner shaft of the 60KW DC CRM and the other one is installed on its outer shaft. The simulation and experimental results with prototype brakes are also analyzed by using MATLAB/Simulink and the operational characteristic of the brake is demonstrated as a function of the motor speed and current of the magnetic poles.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제5권
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• pp.513-522
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• 1997

• 한국IT서비스학회지
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• 제21권2호
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• pp.127-143
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• 2022

In this study, a usability evaluation tool was developed for "ICANDUINO", a VR-based mobile application for maker education, and usability evaluation was conducted with a heuristic survey method for experts. The usability evaluation tool was derived through literature review and validated by two experts. It consisted of seven domains (effectiveness, efficiency, satisfaction, learnability, memorability, error, and cognitive load) and twenty-five sub-items. As a result of the usability evaluation conducted for six experts, it received the highest score in the domain of efficiency and the lowest score in the domain of error. The improvements of ICANDUINO were derived by analyzing the qualitative opinions of experts in each of the four stages (training, coding, tinkering, and testing) of making. the results of this study can be used as a guideline when evaluating the usability of a mobile app for education.

• 공학교육연구
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• 제4권1호
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• pp.57-78
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• 2001

이 연구는 지식 정보화 시대에 인적자원을 효과적으로 개발 선도하도록 국가기술자격제도에 있어서 검정방법을 개선하는데 목적이 있다. 이 연구의 목적을 달성하기 위해 국가기술자격 검정방법의 변천내용과 방향의 적합성에 대해서 살펴보았으며, 주요국의 검정방법과 국내 외 컴퓨터화된 검정방법의 적용실태를 분석하였다. 아울러 현재 국가기술자격 기능장, 기사, 산업기사, 기능사 검정방법의 문제점과 검정인프라의 문제점을 알아보았다. 이를 바탕으로 검정방법의 개선 방안과 이를 위한 검정 인프라 구축 방안을 제시하였다. 연구방법으로 관련자료의 수집 및 분석, 4차에 걸친 전문가 협의회 개최, 국가기술자격 검정방법 실태 및 요구분석을 위하여 기능장, 기사, 산업기사, 기능사 자격취득자를 대상으로 2,500명을 대상으로 설문 조사를 실시하여 의견을 수렴하였다. 이상의 연구를 통해 기능장, 기사 산업기사 기능사 검정방법의 개선 방안, 제도적인 면과 운영적인 측면에서의 검정 인프라 구축 방안에 대해서 살펴보았다.

• 공학교육연구
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• 제21권4호
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• pp.20-27
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• 2018

In this paper, we conducted an analysis of existing materials of material mechanics, surveying educational demands, and selecting art fields for mechanical engineering in collaboration with experts in the fields of aesthetics and renaissance in order to develop educational materials conversed with humanities and arts. In addition, as a core education tool for convergence education, it was developed with an education kits that can be disassembled, assembled and carried by students. As a results of research, education materials were introduced various arts, linked to the engineering thinking. And measurement experiments of material characteristics were carried in a general classroom using developed education kits. From a paper results, the artistic sensitivity of the students will be enhanced and the students' creative problem solving ability will be improved as the ultimate goal of convergence education.

• 수산해양교육연구
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• 제18권3호
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• pp.272-282
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• 2006

The purpose of this study was a compare analysis on the counseling of testing and interview for problem of adolescent. The subjects were 20 adolescents who had randomly assigned to an experimental group(10) and a control group(10). To obtain the data, relation of counseling, awareness of self, motivation of self, identity of career questionaries were used. To analyze data, ANCOVA, MANOVA were executed. The results were follows. First, the counseling of testing affected significantly on improvement of experimental group's awareness of self, motivation of self. Second, the counseling of testing affected significantly on improvement of experimental group's identity of career.

• 한국정보교육학회:학술대회논문집
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• 한국정보교육학회 2011년도 동계학술대회
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• pp.203-209
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• 2011

본 연구는 선행 연구 분석을 통해 찾아낸 정보 영재의 특성 중 하나인 알고리즘 능력을 측정하여 정보 영재를 판별할 수 있는 도구를 교육용 프로그래밍 언어인 스크래치를 활용하여 개발하였다. 판별 도구는 크게 단일 스프라이트, 다중 스프라이트로 나누고 각각 블록추가, 블록 순서 변경, 변수 값 수정, 블록 종류 변경으로 세분화하여 문항을 개발하였다. 본 연구에서 개발한 정보 영재 판별 도구는 프로그래밍 언어를 배우지 않은 학생들도 쉽게 조작할 수 있는 교육용 프로그래밍 언어 중 하나인 스크래치를 활용해 제작되었다, 그러므로 프로그래밍을 배우지 않은 일반 학생들을 대상으로 판별 도구를 이용해 알고리즘 능력을 측정하고 분석한다면 많은 학생들의 정보 영재성을 판별하는데 기여할 것으로 기대한다.

• East Asian mathematical journal
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• 제34권2호
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• pp.103-125
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• 2018

This study was conducted as a part of the project to evaluate the quality of mathematics instruction in the national curriculum system. The purpose of this study is to measure the consistency between teaching goals of mathematics curriculum, contents presentation of textbooks, and testing including adequacy of each element in mathematics instruction for 8th grade. To do this, we used MIQP (instructional quality profile for Mathematics) developed basing on the instructional quality profile (IQP) in the previous research of the project. First, the quality of textbooks' content presentation for 8th grade was found that the desirable levels in number and operation area and geometric area was relatively less compared to other areas, but it was generally good. Second, it was found that the quality of mathematics testing for 8th grade was good in terms of consistency with the curriculum's teaching goals, consistency with the content presentation of textbooks, and adequacy of testing. However, regional differences in the quality of testing showed that there were some deficiencies in regions outside the metropolitan.

• Journal of the Korean Physical Society
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• 제73권11호
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• pp.1644-1649
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• 2018

Aiming at infrared thermal images with different buried depth defects, we study a variety of image segmentation algorithms based on the threshold to develop global search ability and the ability to find the defect area accurately. Firstly, the iterative thresholding method, the maximum entropy method, the minimum error method, the Ostu method and the minimum skewness method are applied to image segmentation of the same infrared thermal image. The study shows that the maximum entropy method and the minimum error method have strong global search capability and can simultaneously extract defects at different depths. However none of these five methods can accurately calculate the defect area at different depths. In order to solve this problem, we put forward a strategy of "divide and conquer". The infrared thermal image is divided into several local thermal maps, with each map containing only one defect, and the defect area is calculated after local image processing of the different buried defects one by one. The results show that, under the "divide and conquer" strategy, the iterative threshold method and the Ostu method have the advantage of high precision and can accurately extract the area of different defects at different depths, with an error of less than 5%.