• 조명전기설비학회논문지
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• 제27권10호
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• pp.86-92
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• 2013

In studies on an alternative insulating gas of $SF_6$ gas, the section of the alternative gas and an insulation technique to improve its low dielectric strength have been reported, but very few attempts have been made at the dependence of a gas pressure and a gap as well as the medium effect in the alternative gas. The purpose of this paper is to analyze the dependence of the gas pressure and the gap at surface flashover voltage in dry air. The dependence is analyzed based on the medium effect. The medium effect by the gas pressure and the gap can be explained by surface roughness of a solid dielectric and an electrode as well as an electric field which decreases due to the correlation between the collision ionization coefficient and the gap, respectively. In addition, an insulation technique which can fabricate a compact eco-friendly gas insulated switchgear is proposed by the results of this paper.

• 한국해양공학회지
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• 제11권3호
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• pp.100-106
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• 1997

Despite various devices have been developed and applied to stabilize the yaw motion, the superiority of twin skeg over other equi-functioned appendages has been recognized so far. In many cases, these skegs were installed with insufficient study and analysis for design, and this leads to the worse performance of their resistance and course keeping than required. Experimental studies on the effect of various kinds of anti-yawing skegs to the course keeping stability and on the additional resistance caused by them were carried out in the circulating water channel(CWC) at Chosun University(CU). Course keeping stability tests for four different size of skegs, resistance tests for three different shapes of skeg(including deformed skegs) were performed systematically. And the effect of angle of skegs on resistance was studied at the final stage.

• 한국IT서비스학회지
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• 제21권3호
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• pp.73-87
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• 2022

As the COVID-19 pandemic continues to prolong, non face-to-face, online classes has become the new normal in education. To examine the effect of course types and course delivery modes on student course satisfaction, the study analyzed survey data collected from 2,743 students enrolled in a 4-year university located in a metropolitan area. Basic Frequency analysis as well as keyword network analysis were used to analyze student survey data. The main results and implications of the study are as follows. First, the survey results indicated that students preferred asynchronous classes over synchronous online classes. This tendency was consistent regardless of student grades and majors as well as the course type. However, students majoring in more practice-oriented disciplines tend to prefer synchronous online classes and blended classes, and this tendency gets stronger with courses in major. Second, the keyword network analysis results further indicated that interactivity may play an important role in both synchronous and asynchronous online course satisfaction.

• Journal of Multimedia Information System
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• 제2권1호
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• pp.187-192
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• 2015

The aim of this study was to develop and analyze a short course educating App Inventor and Arduino that showed the importance of software for youth. The course consists of a total of 10 missions for a 4 hour course divided into 2 parts, each 2 hours respectively. We conducted a basic course of Arduino for hardware and software, Processing for server programming, and App Inventor for programming for smartphones. The final mission was to send a signal to a server with a smartphone and to control light connected to a relay which passes Arduino connected with a server and serial communication. Participants completed 95% of missions, and we found the course had an educational effect for improving creativity and realization of software importance.

• Educational Technology International
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• 제19권2호
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• pp.229-254
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• 2018

Universities in Korea have driven universities' new attempts to adopt more learner-centered and active learning in English. Problem-based Learning (PBL) is one of the well-known constructive teaching and learning methodologies in higher education. Our research goal was to design and develop the optimal PBL practices for a college physics course taught in English to promote learning and course satisfaction. For four semesters, we have tried and adjusted PBL components, and looked at the trend of the exam scores and group work achievement in each semester. We found that the number of problems and the duration of problem solving are the critical factors that influence the effect of PBL in a college physics course taught in English by going through iterative implementation. The iterative process of applying, designing, and constructing PBL to physics classes was meaningful not only in that we have found the optimal PBL model for learning a college physics course, but also in that we have been reflecting on the continuous interaction with learners during the course.

• 한국초등과학교육학회지:초등과학교육
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• 제25권4호
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• pp.374-382
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• 2006

This study investigated the effect of the 'Chemistry in everyday life' course for 234 pre-service elementary teachers on their beliefs regarding science teaching efficacy and the nature of science. This study also examined the effect of this particular course by their field (natural science, humanities & social science, and fine arts). The results show that after the semester the pre-service teachers' science teaching efficacy beliefs were enhanced. In particular, their personal science teaching efficacy beliefs were improved across all fields. However, their beliefs regarding the nature of science remained largely unchanged. This study discussed the implications surrounding science courses for pre-service teachers.

• 인터넷정보학회논문지
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• 제9권6호
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• pp.109-115
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• 2008

이러닝은 학습자의 학습효과를 높이려는 많은 방법들이 연구 및 적응되고 있다. 대부분의 이러닝 학습은 학습자에게 학습과정을 제시하는 학습 내비게이션을 적용하고 있다. 그러나 일반적으로 교수자가 미리 설계한 학습 진행 및 과정을 제시하고 있으며, 학습자는 정해진 학습과정을 학습하고 있었다. 본 연구에서는 학습 진행 및 과정을 학습자의 학습결과에 따라 유동적으로 변화하여 제시하는 학습 내비게이션을 제시하였다. 이를 위해 학습과정을 결정하는 요인으로 학습단원, 콘텐츠 그리고 난이도로 나뉘었으며, 각 프로세스 로직은 CSP를 통해 분석하였다.

• 패션비즈니스
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• 제21권5호
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• pp.122-135
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• 2017

The purpose of this study is to investigate the effect of career decision self-efficacy and course maturity on followership types of undergraduate students majoring in beauty and provide basic data for development of guidelines that can facilitate career decisions. Subjects are 310 students majoring at beauty colleges and universities. Results of this study were as follows. First, career decision self-efficacy was influenced by two underlying factors such as, followership of thinking Style and fatterns of behavior. Second, the effect of followership types on career maturity was significant. Both the higher followership of thinking Style and fatterns of behavior, the career maturity was more affercted. Based on this study, students majoring in cosmetology were divided into type of followership and analyzed according to organic relevance of career decision self-efficacy and course maturity. Based on this, professors or mentors may understand characteristics of college students in cosmetology in explaining characteristics of their profession related to their major. It will be beneficial to provide an opportunity for beauty students to make a reasonable course maturity and career decision self-efficacy with followership types.

• 대한공업교육학회지
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• 제41권2호
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• pp.151-171
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• 2016

본 연구의 목적은 학부생 대상 학제간 융합 전공수업이 수강생의 대인관계, 자원 정보 기술의 활용, 의사소통 역량 향상의 효과를 검증하는 것이다. 이를 위해 학제간 융합수업 수강생 43명을 실험집단으로, 융합수업과 관련이 없는 교과목 수강생 44명을 통제집단으로 나누었다. 각 역량 및 하위영역의 역량 향상 정도를 알아보기 위해 집단 내변화량 차이 대응표본 t-검정, 사후검사 집단 간 차이 독립표본 t-검정을 시행하였다. 연구결과, 학제간 융합수업은 대인관계 역량 향상에는 통계적으로 유의미한 차이를 보였으나, 자원 정보 기술의 활용 역량과 의사소통 역량은 통계적으로 유의미한 차이를 보이지 않았다. 이러한 결과는 학제간 융합수업 설계 시, 기존의 자원 정보 기술의 활용과 의사소통 역량 향상 활동에 대한 수정이 필요함을 시사한다. 본 연구는 대학생 핵심역량 진단평가 도구를 활용하여 융합수업의 효과를 검증한 것으로서 핵심역량 기반 융합수업의 경험적 연구 사례로서 의의가 있다.

• 융합정보논문지
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• 제11권1호
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• pp.167-174
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• 2021

본 연구의 목적은 컴퓨팅 사고력 수업이 대학생의 학습몰입과 협력적 자기효능감에 미치는 영향을 살펴보고 이를 통해 교양교육으로써 컴퓨팅 사고력 수업 효과를 탐색하는 데 있다. 본 연구를 위해 충남의 4년제 대학 1학년 학생 177명을 대상으로 학습몰입과 협력적 자기효능감 설문을 시행하였다. 수집된 자료는 Stata IC 14를 사용하여 ��2 test와 t-test 분석을 시행하였다. 본 연구를 통해 도출된 결과는 다음과 같다. 첫째, 컴퓨팅 사고력 수업을 수강한 학생의 학습몰입은 수강하지 않은 학생과 비교해 유의(t=3.837 p<.001)하게 높게 나타났다. 둘째, 컴퓨팅 사고력 수업을 수강한 학생의 협력적 자기효능감은 수강하지 않은 학생과 비교해 유의(t=2.277 p<.01)하게 높게 나타났다. 따라서 컴퓨팅 사고력 수업은 학습몰입과 협력적 자기효능감에 긍정적인 영향을 미치는 것으로 나타났다. 이와 같은 연구 결과를 바탕으로 컴퓨팅 사고력 수업의 중요성과 효과, 논의와 시사점을 제시하였다.