• Journal of the Institute of Electronics Engineers of Korea SD
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• v.46 no.1
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• pp.76-84
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• 2009

This paper proposes a SOC platform which is eligible for education and application SOC design. The platform, fully synthesizable and reconfigurable, includes the OpenRISC embedded processor, some basic peripherals such as GPIO, UART, debug interlace, VGA controller and WISHBONE interconnect. The platform uses a set of development environment such as compiler, assembler, debugger and RTOS that is built for HW/SW system debugging and software development. Designed SOC, IPs and Testbenches are described in the Verilog HDL and verified using commercial logic simulator, GNU SW development tool kits and the FPGA. Finally, a multimedia SOC derived from the SOC platform is implemented to ASIC using the Magnachip cell library based on 0.18um 1-poly 6-metal technology.

• Journal of the Institute of Electronics and Information Engineers
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• v.49 no.9
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• pp.18-26
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• 2012

As the performance of the next-generation broadband wireless networks is dramatically enhanced, various services (i.e., education, video conferencing, online games, etc.) have been provided to users through a smart mobile platform. Since those services are usually provided by using the centralized architecture, it is difficult for a lot of users to provide the scalable communication service with regard to traffic management. To solve these problems, we have proposed an architecture of P2P-based group communication management scheme using smart mobile device. More specifically, we design the group management protocol and algorithm for the group member management and the traffic management. By using these methods, the mobile multimedia streaming service can be provided with scalability. In order to verify the performance of the proposed scheme, we have mathematically analyzed the performance in terms of the average transmission delay and bandwidth utilization.

• Journal of Korean Library and Information Science Society
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• v.38 no.1
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• pp.67-87
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• 2007

This study aims to suggest the ways to apply Information Commons to local university libraries, which face various changes in users and information environment, for using the libraries' space more effectively and for providing users with more satisfying services. Information Commons, which is a concept having been gradually spreading mainly in the U.S. from the early 1990's, is a service place where users can work out anything related to their studies or various lecture-related jobs because they are provided with various information and electronic resources in that one spot. Researches show that physical and human resources should be prepared before executing Information Commons to minimize the problems and to maximize the effectiveness from applying it. Physical resources are such as PC rooms, multimedia rooms, education rooms, one person or group study rooms, and cafe or lounge. Human resources are the librarians who can do reference services including giving the lectures on using library information resources and who can solve the operating problems related to IT.

• Research in Community and Public Health Nursing
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• v.14 no.2
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• pp.223-231
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• 2003

The purpose of this study was to analyze the knowledge, attitude and experience of middle school boys toward Sexual Behavior. Data were collected by questionnaires from 246 middle school students in Korea, from June 4 to 30, 2000. The reliabilities of instruments were adequate(Cronbach's alpha= .56-.70). Data were analyzed by frequency, percentage, and ANOVA test using SAS V8 program. The results are as follows; 1. The mean score of knowledge of sexual behavior was $12.89{\pm}2.48$ and showed significant differences by the grade(f=5.0l. p=.0074). 2. The mean score of attitude of sexual behavior was $3.69{\pm}0.37$ and showed significant differences by the grade(f=3.06, p=.0386). 3. The correlation between knowledge and attitude is significant(r=.2290, p=0003). 4. The subjects experienced sexual behaviors such as. pornography(80%), night pollution (37.9%), masturbation(32.2%), Kiss(19.1%), Pet(8.7%), Coitus(3.2%). 5. The subjects being received sexual education were 94.7%, these former sexual educations is unsatisfied(40.7%). 6. The subjects who need sexual educations was 55.1%. The needs of sexual educations was high in the connection on with the other sex(51.9%), coitus(12.3%), sexual impulse (7.5%), sex organs(7.1%), sexual physiology (5.2%), masturbation(4.7%). In conclusion, subjects necessary to give sexual educations are suitable to the subjects's needs, grades and teaching methods such as multimedia program.

• The Journal of the Korean dental association
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• v.48 no.9
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• pp.647-652
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• 2010

FDI World Dental Federation is organization representing more than one million dentists worldwide with its more than 100 years of long history. Now FDI headquarter is located in Geneve, Switzerland and serves for developing health policy and continuing education programs, speaking as a unified voice for dentistry in international advocacy and supporting member association in oral health promotion activities worldwide. Korean Dental Association has been a member of FDI since 1959 and participated actively in the FDI's worldwide activities. Past Dr. Heung-Ryul Yoon was a president of FDI from 2003 for 2 years and we also have an experience in 1997 of hosting FDI Annual World Dental Congress successively in Seoul. The image of a country reflects the country's culture as well as affects to its economical and social development and it decides the national brand toward the world. Currently, Korean people realized that and put their efforts for promoting diverse aspects of Korea to the world such as multimedia culture called Han-Ryu, electric industry, automotive industry, sports represented by soccer. We have advanced technique and skill in various fields and now it's time to show ourself better to the world. It's same to the dentistry. It's true that Korean dentistry is top-class in the world and the dental industry is prosperous and also has best technique in the world. I think and strongly hope that the 2013 FDI Seoul Annual World Dental Congress would be best opportunity for Korean dentistry and dental industry to promote ourselves and make a big step to the world. Not only for the dentistry, it will also be very good chance to all the Korean people to improve Korean national brand. I believe that we can accomplish if we, all dental societies, stand together and join our effort to use this good chance the best. I know we can make it.

• The Journal of the Korea Contents Association
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• v.10 no.9
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• pp.1-8
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• 2010

In this paper, we propose a large scale entertainment system based on gesture recognition for learning Chinese character contents. The system is consisted of parts that forecast user's posture in two infrared images and part that recognize gestures from continuous poses. And we can divide and acquire in front side pose and side pose about one pose in each IR camera. This entertainment system is immersive in nature and convenient for its gestures based controlling system. Also, it can maximize information transmission because induce immersion and interest using two large size displays and various multimedia elements. The learning Chinese character contents can master Chinese character naturally because give interest to user and supply game and education at the same time. Therefore, it can expect synergy effect that can learn playing to user combining with large entertainment system based on gesture recognition.

• Journal of Internet Computing and Services
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• v.3 no.4
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• pp.11-18
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• 2002

The IP multicasting service system based on IGMP(Internet Group Management Protocol) is the receiver initiated multicasting system that all receivers must join to and leave from the server of multicasting service. The IGMP is less effective and reliable to apply the education system that all computers of students ore synchronized a teacher's computer. A proposed middle-ware in this paper provides the reliable data transferring and the server initiated multicasting system that client as student's PC is controled by a multicasting server as teacher's PC, This middle-ware is consisted with two major component, The one is the group manager that handle the status informations of members in each group. Another is the reliable sender/receiver that has The transmission protocol based on NAK message and flow control. As the results of the test that 22khz digital voice data and 1024$\times$768 24bit color image data were tested for 30 PCs connected with 100baseT, the voice data was completely without error transferred and the image data was successfully transferred with 0.004% retransmit rate under 2 frames/sec load.

• Journal of KIISE:Software and Applications
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• v.37 no.2
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• pp.129-136
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• 2010

In this paper, we present an Example-based Dialogue System for English conversation tutoring. It aims to provide intelligent one-to-one English conversation tutoring instead of old fashioned language education with static multimedia materials. This system can understand poor expressions of students and it enables green hands to engage in a dialogue in spite of their poor linguistic ability, which gives students interesting motivation to learn a foreign language. And this system also has educational functionalities to improve the linguistic ability. To achieve these goals, we have developed a statistical natural language understanding module for understanding poor expressions and an example-based dialogue manager with high domain scalability and several effective tutoring methods.

• Journal of Advanced Navigation Technology
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• v.8 no.1
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• pp.10-18
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• 2004

As a technique for high-quality multimedia service in down-link, the transmit diversity schemes using a orthogonal space-time block codes were proposed. But if the number of transmit antenna is three or more, it was impossible to obtain full diversity gain because of the decline of spectral efficiency. Accordingly, the quasi-orthogonal space-time block code that not required a additional bandwidth was proposed. But using a space-time block codes, the transmit diversity schemes were verified over quasi-static and frequency non-selective channels. Therefore, in this paper, we analyze the performance of OFDM systems, which a frequency selective channel equalized a frequency non-selective channel, adapting the quasi-orthogonal space-time block code, and compare they to the conventional orthogonal space-time block coded OFDM systems.

• Journal of KIISE:Computing Practices and Letters
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• v.16 no.4
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• pp.502-506
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• 2010

An augmented book is an application that augments such multimedia elements as virtual 3D objects generated by computer graphics, movie clips, or sound clips to a real book using AR technologies. It is intended to bring additional education and entertainment effects to users. For augmented books, this paper proposes an adaptive keyframe-based page tracking method to estimate the camera's 6 DOF pose in real-time after recognizing a page and performing wide-baseline keypoint matching. For a page tracking, proposed method in this paper chooses a proper keyframe and performs a tracking in two step of coarse-to-fine stage. As a result, the proposed method in this paper guarantees a robust tracking to view-point and illumination variations and real-time.