• Journal of Korea Society of Industrial Information Systems
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• v.6 no.2
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• pp.47-53
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• 2001

Real-time multimedia transmit services like internet broadcasting, web-based education, chatting, conference, circumference observation etc. by using internet are given a great deal of weight on most recently internet services. In these way, various internet services are presented and there applications are also gradually spreaded because of improvement MPEG and streaming processing techniques. But currently internet service is a development of system which has independent function of above services. And a research and development of system which have a multipurpose internet service are insufficiency. In this paper, we design and develop system(RealCam SUN A/V) for transmitting images and voices based on MPEG4 streaming. As a result of our research, it made possible to transmit images with 15 frame/sec in 160×120 frame size at 56Kbps and 30 frame/sec in 640×480 frame size at 512Kbps. And also we can apply this system as multipurpose function to circumference observation and internet broadcasting etc., by transmitting voices, images and control signal simultaneously.

• The Journal of Korean Association of Computer Education
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• v.5 no.3
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• pp.127-133
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• 2002

In this paper a web-based real-time education system, which is able to support education through multimedia, is suggested for the expansion of learner's creative ability in the school. This system is designed so that it can support three things: 1) a real time interaction between instructors and learners, 2) individual learning through such an interaction, and 3) a coercive distribution of display by instructions for preventing the deviation of learners from learning. Also, this system, which UML is applied to, makes efficient interaction possible through the module for the real-time exchange and management of messages even in the multi-user environment. Through this system, not only the simulation by learners can be made for experiments and practices, but also Questions and respondence can be supported on the procedure of experiments and the analysis of their results. This system is built on constructivism, and aimed at helping the learning progress and knowledge formation of learners.

• Journal of Engineering Education Research
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• v.3 no.1
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• pp.27-41
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• 2000

Recently there have been many Internet-based studies to provide personal users an efficient educational tool making use of multimedia data. The typical examples are remote education and virtual university where many educational trials on theory-based contents have been performed more frequently than those on experiment-based contents for engineering area. This paper describes about a base system implemented as an example of Internet-based experiment-oriented educations to establish cyber engineering laboratories for mechanics, electronics and chemistry. For the first time as a model of cyber engineering laboratories we herein Introduce in detail a server-and-client-based simulative method in which the result may be displayed on computer monitor of client PC while a simulator program is executed on the server. Secondly we introduce an interactive method in which the user of client PC may not only communicate directly with experiment server after initial connection with management server but also he can confirm the status of experiment being performed by way of video as well as experimental result.

• The Journal of Korean Academic Society of Nursing Education
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• v.5 no.2
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• pp.165-176
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• 1999

The goal of women's health education can be defined as improvement of the quality of their life during entire life cycle. In Korean society, women's well-being is very important to themselves as well as their families, communities. and country. Thus it is important to systematize information on women's health education. These systematized information can be used in preparation of coming 21st century called information era. Unfortunately there have been few studies in women's health education research in Korea especially distance education for women's health related with korean socio-cultural background, etc. Distance education has been internationally used in a variety of settings as a means of providing health education information. The objective of this study was to apply and evaluate a multimedia videoconferencing on women's health distance teaching-learning process. In this study I'd like to design multimedia digital educational material used in the distance teaching-learning process for women's health, and to practice a multimedia videoconferencing on women's health distance teaching-learning processs. The procedures of this study were summarized as follows ; 1. Analysis of subjects' characteristics and education contents and for women's health. 2. Design of a multimedia videoconferencing on women's health distance teaching-learning process. 3. Development of women's health distance teaching-1earning process. 4. Evaluation of developed digital multimedia and distance teaching-learning process related with women's health These results will be used in development of the distance-learning education program for improving Korean women's health. Findings su99est that the advanced methodologies for designing and evaluating the women's health distance teaching-learning programs be obtained through the collaboration with other field's staffs.

• Journal of the Korea Society of Computer and Information
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• v.28 no.5
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• pp.189-196
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• 2023

This study aims to show that "Computer-assisted language learning (CALL)" and "Mobile-based language learning (MALL)" actually influence education, deviating from the traditional "drill and practice" method in foreign language education and learning due to the development of information and communication technology (IT). Specifically, for first-year college students who have relatively poor English skills and do not feel enough motivation for English learning, I will produce educational video content using multimedia authoring tools and upload it to the e-learning system. Video content is configured to be accessed and utilized through various media such as computers, smartphones, tablets, laptops, etc. Ultimately, an exploration of educational value behind the utilization of IT devices in English language Teaching(ELT) and the Second Language Acquisition (SLA) theory behind effective instructional use of such technology are presented. That is to say, the effectiveness of language learning using information and communication technology (IT) is introduced. The article closes by suggesting how to use computers and mobile media for 'Flipped Learning'.

• The KIPS Transactions:PartA
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• v.10A no.5
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• pp.529-538
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• 2003

The speedy development of the world-wide web is rapidly growing the internet-based tools for the remote instruction. In interchanging and expressing the information of one another on the web, it is produced through the form of HTML(Hyoertext Text Markup Language). However, the structural disadvantage of the HTML is becoming to require a powerful XML(eXtensible Markup Language) which can store all the sphere of data, and transform them into another form. Nevertheless, because the powerful XML(eXtensible Markup Language). However necessary that XML standard should be applied appropriately. Because existing lecture data of cyber education sites cannot be shared, the users should passively use only the functions offered by cyber school. To solve the problem of this limit, in this study, the standardized data structure for XML is defined, and system model for processing between the server and the client is provided. By storing the lecture data of cyber education sites as XML on the web, stored data came to be reused without changing on any site. In the view of Users, they could used the Internet service with equipment that they want at any place and any time. To control any kinds of CK\LMS(Cyber Lecture Management System) for Administrator and Users, we offered a variety of Multimedia applications and an easy interface and built a new style of CLMS. Therefore, by strong and extracting the data related with the virtual education of the secondary school through the form of XML, for the effective interchange and sharing of the information, maximum utilization of the information can be achieved.

• Proceedings of the IEEK Conference
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• 2000.06c
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• pp.89-92
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• 2000

최근 인터넷 이용이 증가하면서 원격 교육자료, 전자상거래용 자료 등 여러 이용자가 사용하는 자료를 하나의 서버가 아니라 분산된 형태로 나누어 관리하는 것이 통신량을 줄이기 위해 점차 중요시되고 있다. 특히 멀티미디어 자료는 데이터 량이 많으므로 이용자에게 가까운 서버에 분산 관리하는 것이 더욱 필요하다. 본 논문에서는 CORBA 표준을 따르는 미들웨어를 사용하여 인터넷으로 상호 연결된 임의의 시스템에 자료를 분산 관리할 수 있는 분산형 자료 관리 시스템 DDM(Distributed Data Manager)을 구축하였다. DDM은 크게 나누어 사용자 관리, 데이터 관리, 시스템 상태 관리 기능을 제공하며 단순히 분산 자료의 위치만을 관리하는 것이 아니라, 자료를 종류별 또는 용도별로 통합된 category를 관리한다. DDM은 분산 자료의 통합관리와 시스템 상태 관리를 위해서 주 에이전트(Primary Agent, 이하 PA)와, 이용자에게 직접 서비스를 제공하는 보조 에이전트(Local Agent, 이하 LA)를 중심으로 구성된다. DDM은 모든 자료에 대한 현재 상태를 관리하는데, 자료의 등록, 수정, 삭제 등의 요구가 보조 에이전트를 통하여 실시간으로 이루어지며 자료의 통합 관리와 백업 관리는 주 에이전트가 담당한다. 한편 DDM는 자바와 JDBC를 사용하여 구축함으로써 임의의 플랫폼과 데이터베이스를 이용할 수 있게 하였다.

• The Journal of Information Technology and Database
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• v.1 no.1
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• pp.83-106
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• 1994

본 연구는 정보기술에 관련된 신문기사의 내용과 성격에 관하여 분석하였다. 동아일보와 조선일보양대 일간지를 88년 1월 부터 92년 12월 까지 5년동안 조사하였으며 총 1551건의 정보기술 관련 기사를 분석하였다. 조사결과를 보면 1988년 부터 1992년 사이에 양대 신문에 나타난 정보기술 관련기사가 점점 더 증가하는 추세를 보였으며 이는 정보화사회의 도래와 함께 정보기술이 우리사회의 여러분야로 확산되고 있음을 잘 보여주고 있다고 하겠다. 기사의 내용은 원격통신, 신제품 개발, 컴퓨터관련 교육, 하드웨어와 소프트웨어의 개발과 유통 등에 관련된 기사가 주류를 이루었으며 그외에 공장자동화, 사무자동화, 가사자동화, 컴퓨터관련 범죄, 데이타베이스, 지역정보화, 멀티미디어 등에 관한 주제가 다루어졌다. 한편, 정보기술 관련기사의 성격은 기존의 신문기사에서 부정적인 기사가 주류를 이루고 있는 것과는 달리 긍정적인 기사가 큰 비중을 차지하고 있는 것으로 드러났다. 이는 정보기술이 비교적 새로운 분야이므로 정보기술의 부정적인 측면보다 긍정적인 측면을 부각시키고 있기 때문인 것으로 판단된다. 그러나 최근의 기사에서는 컴퓨터 사용에 관련된 문제점, 컴퓨터를 이용한 범죄, 개인의 프라이버시 침해 등 부정적인 측면의 문제도 제기되고 있다. 신문기사의 내용분석에 의하면 기업의 업종에 따라 정보기술의 활용면에서도 분명한 차이를 보여주고 있는데 제조업의 경우 기업의 내부 물적활동, 생산활동, 외부 물적활동에 관한 기사들이 많았으며 서비스업종의 경우에는 고객에 대한 협상력을 증가시키는데 관련된 기사들이 많았고, 하드웨어나 소프트웨어 산업의 경우에는 고객에 대한 협상력을 증가시키는 문제와 함께 대체재의 개발에 관련된 기사도 많이 등장하였다.

• The Transactions of the Korea Information Processing Society
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• v.5 no.5
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• pp.1234-1245
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• 1998

This paper presents a multiagent system, based on the blackboard architecture and its mechanism of coordination and communication, developed for the collaboration of distributed heterogeneous software systems. The system provides the environment for the collaboration among pre-existing heterogeneous subsystems within the context of multimedia distance education application. The meta-knowledge for each agent is isolated in the global controller and the control knowledge and the problem-solving knowledge are clearly separated within the system. As a result, the coordination problem that typically found in the conventional distributed problem solving systems are greatly enhanced and the reusability of the pre-developed systems are improved.

• Journal of the Korea Computer Industry Society
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• v.3 no.3
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• pp.283-294
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• 2002

Now is the time for web-based video e-mail system because of world wide use of internet. But video data is so large, then data compression is much needed for transmission by web. In this paper, my colleagues and I implement full motion video e-mail system using MPEG-4, the international standards for audio-visual data. This video e-mail system is made of web-based active-X control, so easily accessible by web, and applies real-time audio-video compression. It's possible for everyone to send video e-mail for free to everywhere in the world if this system is used. The main application areas of this system are multimedia mailing service, web-based video advertisement, remote education, remote medical service and shopping mall construction, etc.