• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.453-455
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• 2021

Due to the prolonged Covid-19, online learning has become an essential learning, not an option. In this reality, online learning method that depends on passive video viewing have limitations of poor academic performance and low learning achievement for students. In this work, to overcome these limitations, we apply PSC-Note to the PBL teaching method to improve learners' problem-solving and self-directed learning skills and also improve learning achievement.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.17 no.6
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• pp.1375-1382
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• 2013

A shared whiteboard provides a drawing workplace that can be shared with peoples in real time. Since it supports rich drawing mechanisms for collaboration or communication, it is used as an effective tool in group work such as virtual meeting. In this paper, we present an XMPP client application named SyncNote that supports the shared whiteboard facility. For this, we propose an extension of the open standard communication protocol XMPP to provide the shared whiteboard facility. The SyncNote application runs on the Android platform, providing effective communication through sharing the drawings and images created by a group of users.

• Journal of Korean Elementary Science Education
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• v.23 no.3
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• pp.173-181
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• 2004

The purpose of this study was to explore the effects of visual note making method on creativity and science achievement of elementary school students. This study was conducted for the 17 periods of the first semester of the 4th grade students. Seventy nine students were assigned to experimental group and control group. The experimental group was taught through visual note making methods, and the control group was taught by the traditional manner. On the basis of the test of verbal-spatial from NASSP, the subjects were classified to visual-, visual verbal-, verbal preference groups. After this methods had been applied, students of both groups took tests of creativity and science achievement. The results of this study were as follows: 1. In order to investigate the effects of visual note making on creativity and science achievement of the students, students＇ creativity and science achievement were analyzed by t-test. The experimental group showed significantly higher scores on both of creativity and science achievement than control group. 2. Visual preference group showed significantly higher score on creativity than visualㆍverbal-, and verbal preference group (p＜.01), but not significant on science achievement. In conclusion, the instruction applying the visual note making methods was more effective in nurturing student＇s creativity and science achievement than the traditional instruction.

• Journal of the Korean Institute of Intelligent Systems
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• v.19 no.2
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• pp.218-223
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• 2009

This dissertation about the wrong answer note model development which is individualized investigates a problem. The method which is used from here uses a group sincerity and adds wrong answer analysis leads and to the wrong answer person explanation note of the pattern which is similar refers a wrong answer note explanation. The result which this dissertation is principal will reach to the wrong answer where is not the explanation about right answer and the process which is incorrect and a wrong answer will seek will be able to arrange. There is a possibility of finding the solution which existing wrong answer note system is improved with the method which is proposed.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.268-273
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• 2008

This work defines user intention according to intention range, and also proposes an interactive sound installation which reflects and varies above features. User intention consists of several decomposition concepts, which are elemental intentions, partial intentions, and a universal intention. And also, each concept is defined as inclusion/affiliation relationship with other concepts. For the representation of elemental intention, we implemented an musical interface, Color note, which represents the colors and notes according to response of participants. We also propose Harmonic Defragmentation (HD), which arranges the partial intentions with harmonic rule. Finally, the universal intention is inferred to the comprehensive direction of elemental intentions. We used Karhunen-Lo$\`{e}$ve(K-L) Transform for the inference. For verifying the validity of our proposed interface, the "Color Note," and the various techniques, we installed our work and surveyed various users for the evaluation of HD and statistical techniques. Also, we commissioned another survey to find out satisfaction measurement which was used for expressing universal intention.

• 한국전기화학회:학술대회논문집
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• 2000.10a
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• pp.48-48
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• 2000

• Bulletin of the Korean Mathematical Society
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• v.43 no.1
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• pp.225-225
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• 2006

In this note a modification of Proposition 3.10 of [1] is given.

• Archives of Plastic Surgery
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• v.48 no.4
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• pp.345-346
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• 2021

• The Korean Journal of Financial Management
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• v.21 no.2
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• pp.125-151
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• 2004

This study tests the price discovery from US Treasury bond markets to Korean bond markets using the daily returns of Korean bond data (CD, 3-year T-note, 5-year T-note, 5-year corporate note) and US treasury bond markets (3-month T-bill, 5-year T-note 10-year T-bond) from July 1, 1998 to December 31, 2003. For further research, we divide full data into two sub-samples on the basis of the start-up of bond valuation system in Korean bond market July 1, 2000, employing uni-variate AR(1)-GARCH(1,1)-M model. The main results are as follows. First the volatility spillover effects from US Treasury bond markets (3-month T-bill, 5-year T-note, 10-year T-bond) to Korean Treasury and Corporate bond markets (CD, 3-year T-note, 5-year T-note, 5-year corporate note) are significantly found at 1% confidence level. Second, the price discovery function from US bond markets to Korean bond markets in the sub-data of the pre-bond valuation system exists much stronger and more persistent than those of the post-bond valuation system. In particular, the role of 10-year T-bond compared with 3-month T-bill and 5-year T-note is outstanding. We imply these findings result from the international capital market integration which is accelerated by the broad opening of Korean capital market after 1997 Korean currency crisis and the development of telecommunication skill. In addition, these results are meaningful for bond investors who are in charge of capital asset pricing valuation, risk management, and international portfolio management.

• Journal of Applied Reliability
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• v.15 no.3
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• pp.192-196
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• 2015

It is important to obtain the information of population center for establishing the balanced development policy of a nation. In this note, the population center of Korea is obtained using 2010 Census data and compared with the past population centers. The weighted average method is used for calculating the population center. The results of this note will be able to contribute in the regional population distribution policies.