• Journal of Educational Research in Mathematics
• /
• v.21 no.1
• /
• pp.33-55
• /
• 2011

This study explores the characteristics of calculus students' and instructors' discourses on the derivative using a communicational approach to cognition. The data were collected from surveys, classroom observations, and interviews. The results show that the instructors did not explicitly address some aspects of the derivative such as the relationship between the derivative function (f'(x)) and the derivative at a point (f'(a)), and f'(x) as a function, and that students incorrectly described or used these aspects for problem solving. It is also found that both implicitness in the instructors' discourse, and students' incorrect descriptions were closely related to their use of the word, "derivative" without specifying it as "the derivative function" or "the derivative at a point." Comparison between instructors' and students' discourses suggests that explicit discussion about the derivative including exact use of terms will help students see the relationship that f'(a) is a number, a point-specific value of f'(x) that is a function, and overcome their mixed and incorrect notion "the derivative" such as the tangent line at a point.

• The Journal of the Korea Contents Association
• /
• v.11 no.1
• /
• pp.302-316
• /
• 2011

Despite steady economic growth of e-learning industry, manpower is lacking in e-learning industry. In this study, We developed a new e-learning business model including open market portal system to solve this problem. The existing e-learning business models required complicated procedure for creating contents. Therefore it took long time and great expense. But in this study we developed the business model with open market portal system, it can support to make easily for e-learning contents. We analysed usefulness our program and other popular programs with thirty lecturers. As a result of survey, usefulness of our system is presented. The study suggests differently the student-centered business model and the lecturer-centered business model than existing e-learning business model had the manufacturing company-centered business model and the services-centered business model. We anticipate the new business model invigorate the e-learning industry.

• Journal of Korean Society of Steel Construction
• /
• v.19 no.1
• /
• pp.1-13
• /
• 2007

As girders and towers in cable-stayed bridges are subject to bending moments as well as axial forces, the conventional load rating equation, which considers only the single force effect, cannot be used to evaluate the rating factors of cable-stayed bridges. The load rating equation for components in cable-stayed bridges is not currently established yet. In this paper, we propose load rating equations for girders and towers in cable-stayed bridges using the interaction equations for beam-column members. Moving load analyses were performed for the cases of a maximum axial compressive force, maximum positive moment and maximum negative moment for each component in cable-stayed bridges and detailed procedures to apply proposed equations were presented. The Dolsan Grand Bridge was used to verify the validity of proposed equations. The conventional load rating equation overestimates rating factors of girders and towers in the Dolsan Grand Bridge, whereas proposed equations properly reflect the axial-flexural interaction behaviour of girders and towers in cable-stayed bridges.

• Journal of Practical Engineering Education
• /
• v.13 no.2
• /
• pp.393-403
• /
• 2021

The purpose of this study is to propose a method of designing a systematic panel survey at the institutional level to lay the foundation for data-based decision-making using vocational training teachers and instructors as the population. In this study, the target population and sampling frame, which are the main elements necessary for planning a panel survey, are proposed. Also based on expert advice and empirical data analysis, the sampling unit and sampling method taking into account the outer and inner variables are presented, comprehensively considering the representativeness of data, the efficiency and sustainability of data collection. As a result of the study, with the unit of the panel as a vocational training institution, a two-stage stratified proportional sampling plan is proposed so that the institution selected as the panel and the vocational training teachers and instructors belonging to the institution can participate in the survey. Based on this, implications for the panel survey sample design are presented.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
• /
• v.7 no.1
• /
• pp.207-214
• /
• 2012

Interest in the education for the technology entrepreneurship has increased significantly in the past decade but it is not enough for the educator. That is the reason that one educator has field experience without the theoretical background and the others have theory without the practical experience. Government ask to university to enhance the entrepreneurship training in the undergraduate and graduate level. Our study focus on the what is important for the entrepreneurship educators. Among the evolution of entrepreneurship education, this paper suggest three factors for the educators, the development of teacher and coach who has embedded entrepreneurship algorithm, teachers who has many practice and know-how, and last one is balancing and harmony teamwork of coaches and teachers.

• 한국정보교육학회:학술대회논문집
• /
• 2010.08a
• /
• pp.169-177
• /
• 2010

This study is to make a comparison with actual condition on the computer specialty and aptitude for elementary school of city and farm with questionnairing and to hit with improvement plan. They have several difference from supplying teachers, bankrolling educational expenses but several points of sameness on requiring professional ability, operating study and training, limiting the receiving. Accordingly, if leading the quality improvement of the computer specialty and aptitude by forming stable employing mood, operating various programs, bankrolling educational expenses, extending study and training opportunity in elementary school, students will get opportunities to develope their ability and aptitude.

• 한국만화애니메이션학회:학술대회논문집
• /
• 2011.05a
• /
• pp.66-77
• /
• 2011

1895년 영화가 탄생하면서부터 영화가 예술로서 인정받기까지 오랜 시간이 걸렸듯이 영화가 그 교육적 가치를 인정받기까지도 상당히 오랜 시간이 걸렸다. 즉, 영화가 소비 지향적이라는 비판에서부터 영화는 집에서만 봐도 충분하다는 식의 편견까지 이러한 오해를 불식시키기까지 짧지 않은 시간이 흘렀다. 영화 자체가 교육적 대상으로 인정받기 시작한 것은 1964년 영국영화연구소에서 나온 "영화교육(Film Teaching)"에서 영화교육의 필요성이 논의된 이후에 자연스럽게 그 가치를 인정받기 시작했다. 한편 2004년부터 예술강사 지원사업에 의해 영화교육의 대중화가 본격적으로 이루어졌고, 한 해 뒤인 2005년 만화애니메이션교육이 대중화시대를 열었다. 이렇듯 만화애니메이션교육과 영화교육은 그 교육적 접근은 오래되지 않았지만, 교육과 관련해서 전문적인 동시에 대중적인 측면도 함께 지니고 있다. 다시 말해서, 대학교육에서 이론적이고 실제적인 교육이 이루어지고 있지만, 대중적인 영향력을 통해서 초 중등학교에서 많은 관심을 가지고 있는 교육영역이다. 이렇게 다양한 층위에서 진행되고 있는 만화애니메이션교육과 영화교육을 문화예술교육이라는 범주에서 살펴볼 것이다. 이는 전문예술인 양성을 위한 전문교육인 아닌 초 중등학교에서 이루어지고 있는 문화예술교육이라는 관점에서 바라볼 것이다. 특히 한국문화예술진흥원의 예술강사 지원사업을 중심으로 현재 진행되고 있는 만화애니메이션교육과 영화교육을 점검할 것이다. 그리고 영화교육에서 진행되고 있는 교직과정을 살펴봄으로써 만화애니메이션교육도 이러한 제도적 뒷받침의 필요성을 밝힐 것이다.

• Journal of the Korea Academia-Industrial cooperation Society
• /
• v.19 no.2
• /
• pp.219-227
• /
• 2018

The consortium for the HRD ability magnified program is part of the joint training program for SMEs in the strategic field and supports the infrastructure, training, personnel, and general operation expenses required for the joint training. The purpose of this study was to analyze the factors affecting the satisfaction of the education and training program, as perceived by the participants of the Consortium for the HRD Ability Magnified Program. The results of this study are as follows. Gender, trainer satisfaction, educational facilities and service satisfaction have a statistically significant effect on training program satisfaction. The impact on education and training satisfaction of gender, instructor satisfaction, educational (facilities) and service satisfaction was high and in that order. It was found that the male participants have a more positive effect on satisfaction of education and training than the female participants. Age, job group, and job title did not have a statistically significant effect on training program satisfaction. Based on the results of this study, the following suggestions are made. The capacity of the trainers should be strengthened. It is important to provide facilities that enable trainees to participate effectively in education and training and increase the transfer of education and training to the field. It is necessary to design and implement a curriculum that takes into consideration the female trainees' characteristics and situations. More effort is needed to improve the appropriateness of the education and training contents, education and training time, job relevance, and job contribution.

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.32 no.2A
• /
• pp.85-95
• /
• 2012

This paper presents an investigation on the ultimate behavior of steel cable-stayed bridges using nonlinear finite element analysis method. Cable-stayed bridges exhibit various geometric nonlinearities as well as material nonlinearities, so rational nonlinear finite element analysis should be performed for investigation of the ultimate behavior. In this study, ultimate behavior of steel cable-stayed bridges was studied using rational ultimate analysis method. Nonlinear equivalent truss element and nonlinear frame element were used for modeling the cable, girder and mast. Moreover, refined plastic hinge method was adopted for considering the material nonlinearity of steel members. In this study, the 2-step analysis method was used. Before live load analysis, initial shape analysis was performed in order to consider the dead load condition. For investigation of the ultimate behavior of steel cable-stayed bridges, analysis models which span length is 920.0 m were used. Radiating type and fan type were considered as the cable-arrangement types. With various quantitative evidences such as load-displacement curves, deformed shapes, locations of the yield point or region, bending moment distribution and so on, the ultimate behavior of steel cable-stayed bridges was investigated and described in this paper.

• Journal of vocational education research
• /
• v.37 no.6
• /
• pp.85-104
• /
• 2018

The purpose of this study was to identify the meditating effect of self leadership on the relationship between protean career attitude and subjective career success of lifelong learning educators. Based upon the results, several theoretical and practical suggestions were made to enhance self leadership, protean career attitude and subjective career success of lifelong learning educators. A survey questionnaire for this study was composed of four parts, such as the measurement tool of Protean Career Attitude(Briscoe, Hall & Demuth, 2006), Self Leadership Scale(Houghton & Neck, 2002), Subjective Career Success(Career satisfaction Scale: Greenhaus, Parasuraman & Wormley, 1990; Job Satisfaction Scale: Mobley, Jarret, Marsh & Lim, 1994; Employability Inventory: Johnson, 2001) and demographics. The subjects in this study were lifelong learning educators in Incheon. The survey questionnaires from 450 respondents were gathered, and the data from 426 respondents were used for analysis. The results of this study were as follows: First, protean career attitude of the lifelong learning educators had direct effect on subjective career success positively. Second, protean career attitude of the lifelong learning educators had indirect effect on the subjective career success with the partial mediating effect of self-leadership. Finally, based upon the above results, some implications and limitations of this study were discussed.