• Journal of Information Technology Services
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• v.2 no.2
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• pp.87-95
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• 2003

With the increasing proliferation of World Wide Web, electronic mail systems have become very widely used communication tools. Researches on e-mail classification have been very important in that e-mail classification system is a major engine for e-mail response management systems which mine unstructured e-mail messages and automatically categorize them. in this research we develop e-mail classifiers for e-mail Response Management Systems (ERMS) using naive bayesian learning and centroid-based classification. We analyze which method performs better under which conditions, comparing classification accuracies which may depend on the structure, the size of training data set and number of classes, using the different data set of an on-line shopping mall and a credit card company. The developed e-mail classifiers have been successfully implemented in practice. The experimental results show that naive bayesian learning performs better, while centroid-based classification is more robust in terms of classification accuracy.

• Journal of the Korea Society of Computer and Information
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• v.14 no.2
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• pp.201-209
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• 2009

According to previous researches about online evaluation in many e-Learning contents, it took too much time and effort to generate test questions for formative or achievement tests using a database as an item pool. Furthermore, it is hard to measure accomplishment of learners for each unit through overall tests provided by existing e-learning contents. In this paper, to efficiently cope with problems described above, the item pool based on Item Form was transformed into Interaction Date Model in Run-Time Environment of SCORM2004. And the contents for the math concepts and principles that students would learn from regular classroom were developed in accordance with SCORM. In addition, Confidence Factor Function was used to take an objective view in measuring the accomplishment of learners through the items automatically generated by LMS(Learning Management System).

• The Journal of Korean Association of Computer Education
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• v.17 no.1
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• pp.1-12
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• 2014

Since students' behaviors during e-learning are automatically stored in LMS(Learning Management System), the LMS log data convey the valuable information of students' engagement. The purpose of this study is to develop a prediction model of e-learning course dropout by utilizing LMS log data. Log data of 578 college students who registered e-learning courses in a traditional university were used for the logistic regression analysis. The results showed that attendance and study time were significant to predict dropout, and the model classified between dropouts and completers of e-learning courses with 96% accuracy. Furthermore, the feasibility of early detection of dropouts by utilizing the model were discussed.

• The Journal of Korea Robotics Society
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• v.10 no.2
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• pp.90-95
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• 2015

The main goal of e-learning systems is just-in-time knowledge acquisition. Rule-based e-learning systems, however, suffer from the mesa effect and the cold start problem, which both result in low user acceptance. E-learning systems suffer a further drawback in rendering the implementation of a natural interface in humanoids difficult. To address these concerns, even exceptional questions of the learner must be answerable. This paper aims to propose a method that can understand the learner's verbal cues and then intelligently explore additional domains of knowledge based on crowd data sources such as Wikipedia and social media, ultimately allowing for better answers in real-time. A prototype system was implemented using the NAO platform.

• 대한공업교육학회지
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• v.37 no.1
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• pp.183-204
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• 2012

This study was to analysis perception about Teaching & Learning Support System of the school of Rural Areas in Korea. In order to accomplish the study purpose, the study conducted a research through Web Survey method and examined their recognition. Major findings of this study were as follows: First, Student was satisfied with TLSS of the school of Rural Areas in Korea. Students would like to 'using e-learning with Electronic board and Tablet PC' among program contents. But the system' utilization was low. However, 90% of the students wanted that teacher usually using the FASTEL. Second, Teacher satisfaction was lower compared to the students is relatively. Teachers prefer 'various after school program' to 'using e-learning with Electronic board and Tablet PC'. However, learning effective of using FASTEL system was a 73.8% of teachers are effective is aware and had. Third, 35% Students recognized that are using the pastel system, frequently, On the other hand, the teachers are 60% and to recognize that there was. The reason doesn't the system to good use is slow wireless. Still, e-learning classroom infrastructure for satisfaction was high. Fourth, Teachers recognized students and the pastel system interaction than other e-learning system high. FASTEL System used in the most uncomfortable things on e-learning classroom Wireless Internet phenomena and lost content lacking, in order, I was told. Therefore, there is an urgent need to improve to include Wireless Internet speed improvements and various content added support, easy-to-use instructional tools Add support order selected.

• 한국정보교육학회:학술대회논문집
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• 2006.08a
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• pp.231-243
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• 2006

웹 커뮤니티 기반 온 오프라인 연계 자기주도 학습모형은 일반적으로 전통적인 면대면 교육방식이 갖고 있던 시간과 공간상의 제약 및 상호작용성의 한계를 극복하려던 e-Learning의 노력에서 한 걸음 더 나아가, e-Learning 교육 방식에 전통적인 면대면 교육방식이 갖고 있는 교육적 장점을 결합, 적절히 활용함으로써 학습효과를 극대화하기 위한 학습전략-소위 Blended Learning이다. 이에 이 논문에서는 교실이라는 제한된 범위를 넘어 다른 지역, 다른 학습자끼리 공동 관심사항에 대해 각기 자료를 검색하고, 취합하여 결과물을 공유하는 시스템을 적용하였다. 이 연구는 많은 사람들과의 연계를 통해 지기주도적 상호작용을 활성화한다는 점 이외에도 전문가 집단의 도움을 쉽게 받을 수 있으며 서로 다른 환경과 문화에 대해 통찰할 수 있는 기회를 제공해 준다는 점에서 의의가 있다.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.495-506
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• 2011

Portfolio has recently come to gain more attention from school as an alternative evaluation tool and a self-reflective learning tool for learning. After literature reviews about the case studies on the use of portfolio in higher education including both universities in Korea and abroad, this study attempted, first, to analyze the current e-portfolio system running in Kyung Hee University for the undergraduate students starting from the spring semester, 2010, and then, suggested the ways the system can be more actively utilized among the students, and simultaneously, acquiring more interest and participation from both the faculty members and the school administrators. The data collected from the survey and reflective journals of the students suggested 1) more user-friendly, easy-to-edit version of the system, 2) more diverse modes and functions of the system which, therefore, are able to adjust well to the specific and unique features of subjects or majors of the students, and 3) collaborative learning environments among the students and between the students and the faculty members from which students can share, participate, interact with each other, getting useful feedback from those co-learners and faculty members. Eventually the study aimed to enhance the recognition of the participants about the importance of portfolio as a learning tool for self-reflective learning and authentic evaluation of the students.

• The Journal of the Korea Contents Association
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• v.14 no.6
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• pp.529-538
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• 2014

This study was conducted as an need analysis through close and open semi-structured surveys, in order to identify the adaptive elements of the adaptive e-learning system. The study was conducted on students majoring computer education in teacher's college. In terms of the process of the need analysis, Rossett Model was applied. For the research method, responses on the open questionnaire were analyzed. In terms of the analysis method, coding was used to extract the theme of the content, and through the constant comparison method, categorizing took place. As the element that offers adaption in the adaptive learning system, it escapes from the existing learning style, and recognized the importance of providing adaptability for different elements such as the learner's level, learning objectives, and learning contents. Especially, An instructional model was identified as an important element that helps reach rationality as well as efficiently conduct the learning objectives.

• Journal of The Korean Association of Information Education
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• v.13 no.2
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• pp.159-168
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• 2009

This study is a project case research on PVR-based e-book systems for the cultural property learning effectively. In this study, we designed and implemented the systems and contents using a photographic virtual reality technique. This system could provide the students an effectiveness of virtual experience such as a student is at place that has the cultural property. Moreover we developed the educational contents in image DB. We also converted these contents into e-book typed contents that the students easily searched and used the system in class. This systems were applied the students in elementary school. As the result of applying, we found that the PVR-based e-book systems were more effective than plain web-based systems. This study will give advanced education environment to students as well as teachers in future.

• Journal of the Korea Society of Computer and Information
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• v.12 no.5
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• pp.303-311
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• 2007

The instruction based on mass production system has contributed to the materialistic abundance, but it caused the innate target of education, development of 'holistic human beings' to be lost. Accordingly, the mentoring has been highlighted as an alternative instructional method because it can support learners in the aspect of cognitive and affective domain. On the other hand, as an effort of overcoming time and place constraints of face-to-face mentoring, e-mentoring is being required. This research aims to propose the e-mentoring system design plan for guiding learning after school, which may support face-to-face mentoring. Based on literature reviews, the direction of design was set and the necessary functions were drawn. e-Mentoring system design plan proposed in this article may be helpful to practitioners who are interested in the enhancement of effectiveness and efficiency of mentoring programs. Also it is required that more practical study should be performed for developing the system and testing its effectiveness.