• Journal of Educational Research in Mathematics
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• v.18 no.3
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• pp.309-333
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• 2008

In this research, we reconstructed the textbook on the concept of rate and ratio, which is based on the review on the previous researches and the analysis on the elementary textbook of the 7th mathematics curriculum. We conducted the teaching experiment using the reconstructed textbook, which is to identify the students' conception of rate and ratio and the appropriateness and limit of the reconstructed textbook. As the results of this study, we identify that the changed sequence of instruction (that is, ratio ${\rightarrow}$ percent and value of rate ${\rightarrow}$ rate) was very proper to help students understand the concept of rate and ratio. The relative comparison and absolute comparison and the additive thinking and multiplicative thinking included in the reconstructed textbook were identified very helpful to students' understanding. Meanwhile some contexts given in the reconstructed textbook were identified to cause the students' cognitive confusions.

• Journal of the Korean School Mathematics Society
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• v.14 no.4
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• pp.443-458
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• 2011

There has been a lively discussion on improving Korean students' academic achievement and the imbalance in their recognition of the value of mathematics. In this context, there is a need for a program that enables the majority students who regards mathematics as a subject for the entrance examination to recognize the practicality and historicity of mathematics. Educational books on mathematics in everyday life or the history of mathematics are also expected to serve as an effective tool. In addition, Web 2.0 Map is another means of representing mathematics in everyday life and the history of mathematics in connection with the practical context. The active storytelling process in which mathematics in the practical context in mathematical educational books is represented in Web 2.0 Map is expected to help to understand in depth the practicality and historicity of mathematics. Nevertheless, mathematical educational books and Web 2.0 Map may lead to a considerable variety of outcomes and speeds if carrying out tasks depending on the student's competence and may have practical difficulties in being operated in class. These concerns, however, can be resolved through the creative activity programs adopted in conformance with the 2009 revised curriculum. Therefore, this study intends to develop a program for creating mathematical story maps through mathematical educational books and the Mashup of Web 2.0 Map in accordance with the process of developing activity programs. This study also intends to determine its effectiveness in enabling students to recognize the practical and historical values of mathematics.

• Journal of the Korean School Mathematics Society
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• v.14 no.3
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• pp.355-375
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• 2011

This paper was designed for the purpose of helping the functional comprehension on the concept of a circumcenter and an incenter of triangle and offering the help for teaching-learning process on their definitions. We analysed the characteristic of the definition on a circumcenter and an incenter of triangle and studied the context, mean and purpose on the definition. The definition focusing on the construction is the definition stressed on the consistency of the concept through the fact that it is possible to draw figure of the concept. And this definition is the thing that consider the extend of the concept from triangle to polygon. Meanwhile this definition can be confused because the concept is not connected with the terminology. The definition focusing on the meaning is easy to memorize the concept because the concept is connected with the terminology but is difficult to search for the concept truth. And this definition is the thing that has the grounds on the occurrence but is taught in a made-knowledge. The definition focusing on both the construction and meaning is the definition that the starting point is vague in the logical proof process. We hope that the results are used to improve the understanding the concept of a circumcenter and an incenter of triangle in the field of mathematical education.

• The Journal of the Korea Contents Association
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• v.12 no.8
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• pp.157-166
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• 2012

At the recent 19th General Election, Korean papers waged a surrogate war for the parties they share ideology with. All the conventional practices remained the same - the horse race-like presentations, furthering of confrontations, disregarding policy issues, allocating larger space for commentaries and negative issues, and etc. On top of these, papers began to focus on generational conflicts and individuals at the center of widespread attention and controversies, as a new trend. Photo images are largely used in the commentaries and articles dealing with confrontational or controversial situations. Of course, while the visual images seem to reinforce the emotional appeal of the messages papers try to get across, the potential problems need be noticed that could rise when irrelevant images are used.

• Journal of the HCI Society of Korea
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• v.12 no.4
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• pp.17-25
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• 2017

From the vehicle-human interaction perspective, this study investigated the effect of experiential marketing paradigm which considers user experience as main value. We conducted an experiment to compare traditional marketing and experience marketing messages with the smart cruise control and the smart trunk in the context of driving and non-driving context. As a result of the analysis, experience marketing message had higher overall satisfaction than traditional message exposure. Usefulness, usability, and emotion were partially influenced by experience marketing message. The contribution of this study is that the experiential marketing paradigm was applied to automobile UX and practically demonstrated the value of experience design of smart automobile system.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.14 no.2
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• pp.919-926
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• 2013

The relation of City and type caused by Neo-Rationalism often posed a subject in the modern urban architectural design and is treated by essential concept and methodology. The purpose of this study was that Neo-Rationalism architecture recognized and treated by metaphysical form and singular image examined on the urban viewpoint. In other words, interpretation concept of city and architecture considered through typological architectural theory and work analysis of Neo-Rationalism architect. Accordingly, the urban contextual characteristics of Neo-Rationalism architecture were aimed to analyze by examining the acceptance mode.

• The Journal of the Korea Contents Association
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• v.9 no.10
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• pp.436-443
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• 2009

Last year, 2008 Beijing Olympic Games have finished successfully. Over the last century the Olympic Games have received much attention from the world widely in the various point of views. In opposition to the Olympic Games, Delphic Games have attracted little attention. Moreover, There are no comprehensive monograph and research about Delphic Games in ancient and modem era. On that account, this paper will focused on the historical context of Delphic Games, review contents of it, and discuss visions to introducing and announcing the Delphic Games to the academic world.

• The Journal of the Korea Contents Association
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• v.6 no.10
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• pp.17-24
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• 2006

One of the main problems of today's ubiquitous computing systems is that they do not meet their quality requirements. Prior studies had investigated quality factors that were important to users regardless of use contexts. However, mobile computing services such as mobile data services (MDS) are fundamentally different from traditional information systems (IS) because it has been used in various life contexts. We conducted a qualitative study to identify important quality factors on various contexts in MDS. The results show that important quality factors in mobile computing services are differentiated from important quality factors in information systems.

• The Journal of the Korea Contents Association
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• v.20 no.9
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• pp.158-168
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• 2020

This paper analyzed the process of text generation of the fan-made works in Korean idol. The subjects of the study adopted the fan-made works of 'BTS' and 'EXO'. This is applied the concepts of 'Apparatus-Operator' and 'Technical form' in Vilém Flusser. Idol contents build a database of fan-made works and create the storyworld through separation and integration of fan's interpretations. By decontextualizing and recontextualizing the idol contents, fans reinforce and extend the original texts.

• Journal of the Korean earth science society
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• v.30 no.3
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• pp.366-380
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• 2009

The purpose of this study was to investigate the differences of reflective inquiry according to students' characteristics and interaction modes of small group in three contexts of the classroom and to obtain educational implications about using small group and teacher's intervention for an effective reflective inquiry. We transcribed and analyzed the students' conversation in inquiry activities of small group with frameworks of linguistic behavior and three contexts of the classroom. The result of the study indicated that individual and group reflective inquiry could be affected by the relationship with peers more than their own characteristics.