• International Journal of Computer Science & Network Security
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• v.21 no.3
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• pp.229-234
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• 2021

The explosive growth of video-based services is considered as the dominant contributor to Internet traffic. Hence it is very important for video service providers to meet the quality expectations of end-users. In the past, the Quality of Service (QoS) was the key performance of networks but it considers only the network performances (e.g., bandwidth, delay, packet loss rate) which fail to give an indication of the satisfaction of users. Therefore, Quality of Experience (QoE) may allow content servers to be smarter and more efficient. This work is motivated by the inherent relationship between the QoE and the QoS. We present a no-reference (NR) prediction model based on Deep Neural Network (DNN) to predict video QoE. The DNN-based model shows a high correlation between the objective QoE measurement and QoE prediction. The performance of the proposed model was also evaluated and compared with other types of neural network architectures, and three known machine learning methodologies, the performance comparison shows that the proposed model appears as a promising way to solve the problems.

• School Mathematics
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• v.17 no.2
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• pp.203-222
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• 2015

This study analyzed the classroom discourse between teacher and students based on the Mehan(1979a)'s theory to examine the characteristics of the classroom discourse between teacher and students in high school statistics class. The results of this study on the structure of class showed that the statistics class in this study adopted knowledge transmission-oriented teacher-led class in which the framework of introductiondevelopment- arrangement, which is Mehan's basic 3 stages, is clearly represented. The results of examining I-R-E sequence showed that $I_T-R_T$ structure, in which the teacher asks questions and the teacher talks about the answer, frequently appeared. And the statistics class in this study was monological class in which students hardly participated. Through these results of this study, it was found that teacher should form the statistical context, in which students can participate in discourse, and build discourse learning community and induce argumentational discourse through metaprocess elicitation.

• Journal of Agricultural Extension & Community Development
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• v.12 no.1
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• pp.119-127
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• 2005

이 연구의 목적은 2003년부터 농촌진흥청에서 이루어져 왔던 이러닝시스템에 대한 실태와 참여농가의 만족도를 파악하고 향후 이러닝시스템의 발전방향을 모색하는 데 있다. 농촌진흥청은 2003년부터 웹과 비디오화상시스템에 기반을 둔 이러닝시스템(e-learning system)을 이용하여 농가에 대한 지도와 교육사업을 전개하여 왔다. 2003년에는 이러닝을 통한 교육과정에 251명의 농민이 등록하였으며, 이 중 최종적으로 126명이 오이, 고추, 토마토에 대한 생산과 경영관리 교육과정을 수료하였다. 2004년에는 503명의 농민이 이러닝 교육과정에 등록하였으며, 이중 313명의 농가가 버섯, 딸기, 수박에 대한 생산과 경영관리 교육과정을 수료하였다. 이러닝 교육과정에 참여하는 농민의 76%가 이러닝시스템을 통한 교육에 만족하는 것으로 나타났다. 이러닝을 위한 시스템 형태에 따른 선호도는 비디오화상시스템만을 이용한 경우는 23%. 웹만을 이용한 경우는 13%, 이 두 시스템을 통합하여 운영한 경우에는 59%로서 통합시스템운영이 더 효과적인 것으로 나타났다. 현재 진흥정이 구축한 통합시스템은 동시에 1000명 이상의 농민을 대상으로 교육을 실시할 수 있다. 지도사업의 예산과 인원이 과거에 비해 줄어들고 있는 상황에서 이러닝시스템은 향후 농민들을 대상으로 한 지도와 교육에 효과적인 대안이 될 수 있다.

• The Journal of the Korea institute of electronic communication sciences
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• v.10 no.3
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• pp.327-332
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• 2015

Educational robot was introduced as an effective educational tool is to foster scientific creativity and learn the basic principles of science are applied to change the configuration of the educational after-school learning kits for science education. SMEs as a tool to foster scientific creativity center and a variety of educational robot technology and the wide range of games for students and robotic technology development, existing e-Learning by downloading mp3 music or learning content for the robot, such as the provision of specialized content Although the technology is still being developed to take advantage of the professional community formation is insufficient side. Currently, one-point linkage drag Smart Touch control dynamic motor development does not need this motor development is possible for users to easily.

• The Journal of Korean Society for School & Community Health Education
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• v.12 no.3
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• pp.17-28
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• 2011

Backgroud & Objectives: The purpose of the study was to develop an innovative blended learning method on life style and health promotion and evaluate the educational effects for university students. Methods: The blended learning was developed to combine face-to-face lecture(off-line lecture) and on-line lecture that applied the subject of life style and health promotion. This course is a coordinated effort towards providing 5 topics of lifestyle such as smoking, alcohol, exercise, diet, and stress management. This has been verified by an expert in the field of nursing, education, e-learning technician and students. Participants were different part of university students (n=28) with major enrolled in a general culture course for 2 credits which composed of 8 sessions of each 2-hour in the first semester of 2010. The study was a one group posttest design. A self-report about health knowledge, attitude, and health behavior was organized by content analysis after the sessions. Results: Positive feedbacks from students were reflected in the outcome. Student regarded good lifestyle as being the most important. Student concerned those on-line lectures are not only available at most time and site, but also good for individualization, visual understanding and interest. Face-to-face lecture provided student a chance to integrate with knowledge and experience and had desire to improve good lifestyle and health promotion. Conclusions: The blended learning method on good lifestyle and health could make a best use of improvement for knowledge, attitude and behavior concerning. It is needed to identify the long term effects of a blended learning for further study.

• Proceedings of the KSR Conference
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• 2005.05a
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• pp.936-941
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• 2005

KORAIL Human Resources Development Center' educational system is changed according to new start KORAIL. So, New master plan for will perform new vision POWER KORAIL 2010 is presented. 'C' Learning, 'W' Learning and 'E' Learning form the basis of these new methods and their principles have been applied ever since. These three independent yet interconnected learning axis were formed in order to achieve balance and harmony, realized in an integrated educational community. This model of education has become the foundation of our educational ideal at KORAIL's HRD Center. Innovative thinking and diligent scrutiny of educational applications and methods at the KORAIL HRD Center will bring about winning 'the war for talent'.

• Journal of The Korean Association For Science Education
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• v.36 no.3
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• pp.371-387
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• 2016

Learning at the elbow of scientist is a well-known educational approach to improve students' understanding of science and scientific practice. This study, in the perspective of legitimate peripheral participation in a community of practice, explores how students' scientific practice and perception could be shifted through R&E program with the development of participation. Data from participant observation for 18 months and in-depth interviews were analyzed based on constant comparative method to extract common characteristics of students' participation and major shifts in their scientific practices and perceptions. Students' development of participation was categorized into three stages: legitimate, peripheral, and full participation. In the stage of peripheral participation, students perceived themselves as mere students and showed passive engagement. They just followed the directions of researchers and didn't know what they should be doing. But through continuous participation, students showed enhanced engagement like voluntary article reading, role assignments, and establishing norms in a community of practice with the reference of scientists'. In this stage of transitional participation, students also showed a deepened perception on everyday life of scientist and the community of scientist. And finally in the stage of full participation, students showed responsibility and ownership on research and continuous efforts to refine their research. They recognized themselves as beginning scientists. With these findings, this paper highlighted the dynamic processes of students' development of scientific practices and identity through R&E participation. It also suggests implications for research programs for education, especially for students who have already articulated a science-related career but still have only foggy notions about science.

• Journal of the Korea society of information convergence
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• v.5 no.2
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• pp.59-65
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• 2012

This study analyzed the websites of domestic college's Teaching and Learning Center of Quality. The title of "Teaching and Learning Center of Quality" was given to 9 colleges selected for 3 years since 2010 by Korean Council for College Education. The websites mostly consist of introduction, teaching support, learning support, e-learning support, service, media support, resources, community, and so on. This study also analyzes the similarities and differences of the websites by the degree of the webpage menu activation. This study suggests the direction of the websites functions which college's Teaching and Learning Center should have.

• Journal of Agricultural Extension & Community Development
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• v.21 no.4
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• pp.1029-1060
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• 2014

The purpose of this study are to figure out whether there are the meaningful differences between learner's learning achievements and contents preference in accordance with the delivery strategies (instructor-focused model, learner-focused model) of learning materials suggested by Bloom in web-based instruction, and to suggest the various options on the contents delivery strategies to improve the learner's learning achievements of each learning domains. Learning domains were divided by the cognitive domain, the affective domain, and the psychomotor domain. The result of research with 182 learners showed that learner-focused model in the cognitive domain caused higher learning achievements and preference than instructor-focused model. And instructor-focused model in the psychomotor domain compared with learner-focused model caused higher learning achievements and preference. However, there were less meaningful differences in the affective domain. In other words, learner-focused model is appropriate to the feature of the cognitive domain while instructor-focused model is appropriate to the feature of the psychomotor domain. The results suggest that delivery strategies should be chosen by domains of learning contents in order to improve learner's learning achievements in web-based instruction. Learner-focused delivery strategies in the cognitive domain and instructor-focused delivery strategies in the psychomotor domain need to be considered positively. Delivery strategies should be studied and developed in order to lead higher learning achievements and preference.

• Information Systems Review
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• v.15 no.3
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• pp.1-37
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• 2013

This study is conducted to explore the possibility of service convergence to promote mobile learning. This study has attempted to identify how mobile learning service is provided, which services among them are considered most popular, and which services are highly demanded by users. This study has also investigated the potential opportunities for service convergence of mobile service and e-learning. This research is then extended to examine the possibility of active convergence of common services in mobile services and e-learning. Important variables have been identified from related web pages of portal sites using social network analysis (SNA) and association rules. Due to the differences in number and type of variables on different web pages, SNA was used to deal with the difficulties of identifying the degree of complex connection. Association analysis has been used to identify association rules among variables. The study has revealed that most frequent services among common services of mobile services and e-learning were Games and SNS followed by Payment, Advertising, Mail, Event, Animation, Cloud, e-Book, Augmented Reality and Jobs. This study has also found that Search, News, GPS in mobile services were turned out to be very highly demanded while Simulation, Culture, Public Education were highly demanded in e-learning. In addition, It has been found that variables involving with high service convergence based on common variables of mobile and e-learning services were Games and SNS, Games and Sports, SNS and Advertising, Games and Event, SNS and e-Book, Games and Community in mobile services while Games, Animation, Counseling, e-Book, being preceding services Simulation, Speaking, Public Education, Attendance Management were turned out be highly convergent in e-learning services. Finally, this study has attempted to predict possibility of active service convergence focusing on Games, SNS, e-Book which were highly demanded common services in mobile and e-learning services. It is expected that this study can be used to suggest a strategic direction to promote mobile learning by converging mobile services and e-learning.