• The Journal of Korean Association of Computer Education
• /
• v.4 no.1
• /
• pp.27-34
• /
• 2001

Recently. The web-based distance education system becomes generalized so that learners can study without being under the control of time and space. This shows that it is more widely used through Internet in education field. But the previous developed methodology for distance-lecture system has some problems, on the Distance Education. It takes much time and cost. In this paper, the need of the Distance-lecture system to apply component-based developing methodology is suggested to overcome these problems. Also, you can save lots of time and cost because it has the reuse, the convenient availability, and the transplantation of distance-educaton system through component-based developing methodology.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.1
• /
• pp.209-219
• /
• 2011

Most of the computer-based distance learning systems are asynchronous ones that allow students to download from the server the lecture previously given by a lecturer. While these asynchronous systems has the advantage that enable students to view the lecture with no time restriction, the study may not be effective due to the lack of support for real-time interaction between students and lecturers. Based on the student-lecturer-collaboration session model, this paper presents a collaboration session-centric synchronous distance learning system that supports real-time interaction between students and teachers, awareness information during lecture, and feedback from students. Basic feature of the proposed system include audio and video conferencing, text-based chat, and shared slide with annotation support.

• Proceedings of the Korean Society of Broadcast Engineers Conference
• /
• 2001.11b
• /
• pp.57-62
• /
• 2001

현재 서비스되고 있는 디지털 위성방송(DVB) 서비스의 경우 비디오는 SD급인 MPEG-2 방식을 이용하고 있다. [1] MPEG-2 비디오를 위성을 이용한 원격 교육 서비스에 적용할 경우 해상도 및 데이터량이 보이고자 하는 교육 데이터에 배해 상대적으로 커 비효율적이다. 이를 개선하고 위성을 이용한 원격교육 서비스를 효율적으로 구현하기 위한 MPEG-4 적용 방안 및 구현 기술을 제안한다. MPEG-4 비디오 프로파일은 심플 프로파일을 적용하며 오디오는 G.273.1을 사용하고 MPEG-4 데이터 및 mp4 파일 전송은 DVB 방식의 데이터 방송 규격인 MPE와 Data Carousel을 적용한다. MPEG-4를 이용한 위성 원격교육 서비스에서의 실시간 강의 서비스에 해당하는 라이브 캐스팅 외에 mp4 파일을 이용한 파일 캐스팅 및 비실시간 강의 서비스에 해당하는 mp4 파일의 캐로셀 전송 방안에 대해서 제안 하고자 한다.

• The Journal of the Korea Contents Association
• /
• v.5 no.2
• /
• pp.1-5
• /
• 2005

It is assumed that there is difference between working students and non-working students with respect to distance learning. In this paper, we surveyed attendance in distance learning courses to verify differences in perception of faithfulness, studying time, and completion of content reading. The results are analyzed and reported. The statistical analysis indicates that working students perceive that they are less faithful to their lectures. However, the results pertaining to participation time per week and content reading showed no statistical difference between working students and non-working students.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.6
• /
• pp.1369-1380
• /
• 2011

Most existing mobile distance learning systems are asynchronous ones that allow students to download lecture video and presentation material. However, there are a few synchronous real-time mobile distance learning systems that support slide, annotation, feedback from student, and lecture video and audio at the same time. These live mobile distance learning systems have an advantage of supporting real-time interaction between students and a lecturer thereby making students understand the lecture better. But, they also have a disadvantage in the sense that they don't allow students to experience the past lecture. This problem can be solved by recording and replaying lecture session. So far, there are few mobile distance learning systems that support session recording and replay. This paper presents a synchronous mobile distance learning system that supports video and audio, slide with annotation, and real-time feedback from students, as well as session recording and replay, which is not supported by the existing mobile distance learning systems. The evaluation of the system among students shows that 61.3% of them were satisfied while 3.2% weren't.

• Journal of the Korean Society of Radiology
• /
• v.14 no.4
• /
• pp.405-413
• /
• 2020

Expectations and interests in blended learning are increasing as universities respond to the educational flow of transition to e-learning. This study analyzed the difference between the satisfaction of students in the first grade of radiology and the general characteristics of the subjects when applying blended learning. First, the satisfaction according to the class type was the highest in blended learning classes at 47.2%, followed by lecture room classes at 30.6% and remote classes at 22.2%. Second, the place where the remote lecture was watched by viewing the remote class according to the general characteristics was the highest at 94.4%. The most common medium for attending the remote class was using a PC, with 72.2%, and there was no significant difference in the remote class viewing method (p>0.05). Third, the appropriateness of the blended learning, "Remote lectures and lecture room lectures were properly conducted," had the highest score of 4.27±0.70. In addition, there was no significant difference in response to the teaching method according to gender and age (p>0.05). Fourth, the technology and system support,'Technical support and system support must be done when taking a remote lecture,' showed the highest score of 3.41±0.96. The lack of communication between professors and students,'In the remote class, communication between professors and students is insufficient' was the lowest with 2.88±1.00. In addition, there was no significant difference in the improvement of class according to gender and age (p>0.05). Through this study, it was intended to serve as a basis for the plans of blended classes and the policies of schools that introduced blended classes.

• Journal of the Korean Society of Radiology
• /
• v.15 no.3
• /
• pp.381-390
• /
• 2021

The purpose of this study was to examine the lecture satisfaction of radiological science majors in total remote classes due to coronavirus disease 2019, and influencing factors were analyzed. An online survey was conducted from September 1, 2020 to November 15, 2020, lecture satisfaction, teaching presence, academic motivation, self efficacy, behavior regulation and usage simplicity of remote classes for 458 3 and 4-year radiological science majors located in the Yeongnam area. Lecture satisfaction was significantly different according to grade, self-review time, and preferred teaching method. In addition, lecture satisfaction showed a significant positive corrleation with the teaching presence and usage simplicity of remote classes. In the multiple regression model, lecture satisfaction showed a significant explanatory power of 45.7% through usage simplicity, teaching presence, self efficacy and academic motivation. This study was attempted to provide basic data to increase the effect of remote classes at universities that are expected to expand in the post-corona.

• Journal of KIISE:Computing Practices and Letters
• /
• v.6 no.5
• /
• pp.543-554
• /
• 2000

In the conventional distance education systems, all functions for the distance education were processed by a server. Therefore, the system of high capacity was required and there were various restrictions to provide many classes in real-time simultaneously. The group-based distance education system proposed in this study reduces a load of the main server by distributing its functions to client PCs. In the group-based education system, the establishment of lecture or discussion rooms is executed by main server, but on the other hand, the functions of the conventional server are executed by a lecturer's PC or a discussion administrator's PC The test results of the system implemented in this study show that a lecturer's PC can afford to provide fifty trainees a lecture, though they depend on the specification of systems. Therefore, the proposed system in this study can afford to simultaneously provide with the various distance discussions and lectures by reducing a load concentrated to the server.

• Korea Multimedia Society
• /
• v.6 no.4
• /
• pp.15-22
• /
• 2002

• Water for future
• /
• v.55 no.12
• /
• pp.6-10
• /
• 2022