• Journal of Educational Research in Mathematics
• /
• v.14 no.3
• /
• pp.221-237
• /
• 2004

This research analyzed mathematical discourse of the students in an RME-based differential equations course at a university in order to investigate the social transformation of the students' conceptual model of differential equations. The analysis focused on the change in the students' use of conceptual metaphor for differential equations and pedagogical factors promoting the change. The analysis shows that discrete and quantitative conceptual model was prevalent in the beginning of the semester However, continuous and qualitative conceptual model emerged through the negotiation of mathematical meaning based on the inquiry of context problems. The participation in the project class has a positive impact on the extension of the students' conceptual model of differential equations and increases the fluency of the students' problem solving in differential equations. Moreover, this paper provides a discussion to identify the pedagogical factors Involved with the transformation of the students' conceptual model. The discussion highlights the sociocultural aspect of teaching and learning of mathematics and provides implications to improve teaching of mathematics in school.

• Proceedings of the Korea Contents Association Conference
• /
• 2004.11a
• /
• pp.116-120
• /
• 2004

As the first, about symbol and metaphor of visual culture animation, I research what is the de-centered reading focused on relationship between the semiotics text and the audience. Secondly, I will study about an animation text and their relationship within it's metaphor, animation work's analysis and art directed intension(and process) on aesthetic view as a visual representation.

• Korean Journal of Childcare and Education
• /
• v.11 no.3
• /
• pp.25-44
• /
• 2015

The aim of this research is to provide more proper teaching practicum chances through getting practical implications by pre-service early childhood teachers' perception of teaching practicum through investigating pre-service early childhood teacher's perception of teaching practicum using metaphors. Participants were 121 pre-service early childhood teachers'. They were early childhood education freshmen and sophomores who did not experience teaching practicum. The opened survey expressing metaphors about teaching practicum was conducted. The results showed that participants suggested 114 metaphors and those were coded and divided. The results were categorized into 11 types including 'It is hard but also fruitful.', 'It is a new experience.', 'It is hard and difficult.', 'It is meaningful and important.', 'I am afraid and worried.', 'I learn a lot.', 'I have to go though it.', 'I have to make an effort.', 'It is pleasant.', 'I am evaluated.' and 'others'. We expect that this research will give a chance to review what the teaching practicum means to pre-service early childhood teachers and make plans for pre-service early childhood teachers to prepare the teaching practicum with proper perception.

• Communications of Mathematical Education
• /
• v.16
• /
• pp.175-180
• /
• 2003

• The Journal of the Korea Contents Association
• /
• v.14 no.9
• /
• pp.64-75
• /
• 2014

This study has attempted to explore the audience's visual attention about the subtitles types of CATV entertainment program. To achieve this, this research has measured the dwell time and average fixation data through the eye-tracking test and analysed the reason of particular visual attention by in-depth interview. According to the eye-tracking research findings, four types of subtitles(character metaphor, character metonymy, event metaphor, event metonymy) were measured the highest dwell time and average fixation time. Also, according to in-depth interview, visual attention was clearly turned up that event metonymy constructs the conflicts between characters and overstates the trip place romantically. This results means that staffs of intensify the reality and visual pleasure through event metonymic subtitles.

• Cartoon and Animation Studies
• /
• s.45
• /
• pp.435-450
• /
• 2016

Animation is an artificial image created by artist's imagination. Animation is defined as "the art of the animated image" in the sense that immobile images can be seed as a living creature. In other words, the term "diegesis" in modern arts genre is generally considered as something that indicates fictional world in which narration develops. Therefore, when we say that animation world is formed based on diegesis, it represents the fictionality of animation world. The problem occurs at this point. Even thought the animation world is recognized as a fictional world, we contradictorily believe that the event occurring in the screen world are real and accept them as a true message. This condition is called "quasi-emotion". Quasi-emotion is not fake bit not real either, and it is the third emotional state. It happens when we "make believe" that we believe a fictitious figure or a situation. However, in order to actively operate this "make-believe" state, an appropriate environment and props are required, specially metaphorical imagination and storytelling in short animated film. So that this article will draw a conclusion from the method that make-believe the fictional world and communicate the message through analysing the short animate film, form Disney.

• Review of KIISC
• /
• v.8 no.1
• /
• pp.21-31
• /
• 1998

본고에서는 최근 전산망에서 빈번하게 발생하고 있는 패스워드 도용에 대한 기술적 대책을 수립하기 전에 반드시 고찰해보아야 할 관련 기술들을 살펴보고자 한다. 또한 각 관련 기술에 대한 보안 취약성을 분석하여 대응 기술을 개발하는데 있어서도, 이에 대한 기술적 이해를 돕고자 한다.

• Proceedings of the Korean Environmental Sciences Society Conference
• /
• 2018.10a
• /
• pp.88-88
• /
• 2018

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.26 no.9A
• /
• pp.1609-1613
• /
• 2001

본 논문에서는 실시간 자기 상관 관계를 이용하여 주파수 도약 시점을 찾아내는 epoch 추정기를 소개하고 이것의 성능을 tone jamming 환경 하에서 분석해 보았다. 주파수 도약 방법을 이용하는 시스템은 주로 군 관련 시스템이므로 jamming 환경 하에서의 성능이 매우 중요하다. Jamming이 있을 경우 epoch 추정기는 실제 값보다 작은 값을 나타내는 것을 알 수 있었다. 분석 과정을 수학적으로 유도하였고, 컴퓨터 실험으로 결과를 확인하였다.

• Journal of the Korea Society of Computer and Information
• /
• v.25 no.3
• /
• pp.251-260
• /
• 2020

In this paper, we propose to understand the conceptual structure of programming elements that learners form during the prototyping theory. To do this, we reviewed previous studies on the meaning of conception and prototype theory and conducted a course of problem-solving programming for 33 university students who had no prior experience in programming, and collected transcription materials through conceptual metaphorical writing. The conclusions of this study are as follows: 1) Identifying the conceptual structure of learners as a conceptual metaphor can enhance the effectiveness of programming education. 2) Learners need to reinforce the experience of forming abstract attributes to form mature programming concepts. 3) The concept of programming differs in the structure of multi-level concepts that students, teachers, and professional programmers have in each group. 4) Programming elements should intentionally block misconception risks in the meaning of symbols. 5) Concept evaluation tools should be developed to check whether various attributes can be applied.