• School Mathematics
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• v.5 no.1
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• pp.77-95
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• 2003

We have web-based online discussion to implement active interaction and a variety of communicative activities. I have gathered the following research questions to study about the meaning of web-based online discussion as a mathematical communication teaching method. First, what changes are there in students mathematical communication ability in web-based online discussion\ulcorner Second, how do students evaluate the web-based online discussion experience\ulcorner In this web-based online discussion, groups of middle school first grade 34 students and each group had chatting at 8 times for 10 weeks. I analyzed what they had discussed by the prints that they had sent me by e-mail. I also surveyed what they had experienced and analyzed them. In this research, the online web based discussion has given positive influence on students' competence of speaking, writing, reading and listening which are crucial to mathematical communication. Students' mathematic thinking power improved and attitudes to mathematics have become more positive.

• The Journal of Korean Institute for Practical Engineering Education
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• v.2 no.1
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• pp.77-83
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• 2010

Effectiveness of the e-learning hands-on practice in the engineering education depends on the quality of the contents of which simulation is a part and the teaching strategy of the instructor. Instructors who develop and use the simulation-included e-learning content should employ various teaching and learning activities which would make online simulation practice effective. Thus, the strategy for the effective e-learning simulated practice in engineering courses should be known and used effectively. The aim of this paper is to classify the development methods of the simulations and the teaching and learning activities of the development types classified. The comparison of the teaching and learning activities leads to suggestion on teaching and learning strategy for effective use of the online simulation in engineering education.

• The Journal of the Korea Contents Association
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• v.9 no.8
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• pp.178-189
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• 2009

This paper investigates the influence of social networks on the satisfaction and loyalty of online game users. We gather the resulting questionnaires written by all respondents and compare social networks of users in the online game world. Social networks of online game users influence a sense of community. In consequence, the community sense influences the satisfaction and loyalty of online game users, respectively. Therefore, the companies which produce an online game and provide various services to users should consider the social networks and communities of their game users. Especially they have to try to manage the users who are the opinion leaders of the online game. If the companies make good relationships with users who are the opinion leaders of the online game, they would easily improve the loyalty of ordinary users by performing word-of-moth marketing of the users' opinions concerning about the online game.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.6
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• pp.1187-1194
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• 2020

We presented a method of deep quiz cropping for automatic construction of quiz pool in online quiz systems. The method detects question boxes and sunda boxes in images captured from test papers by a deep learning-based object detector, and makes pairs of question box and sunda box by the box coupling. We applied the deep quiz cropping to images captured from test papers and achieved successful results.

• Journal of Korea Game Society
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• v.15 no.6
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• pp.65-76
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• 2015

This study attempts to investigate the parent's perception types of online game and their related factors. The data was collected through the online survey from 485 parents. As a result, the parent's perception types of online game were classified as 4 types. Each perception type shows differences in an attitude and reaction to online game and gender. Next, this study employed a multinomial logistic regression model to examine variables influencing the parent's perception types of online game. The result shows that parent's gender, controlling parental style, and problematic communication have statistically significant effects on the parent's perception types of online game. This study holds its significance in considering the game use of children in the context of parent-child relationship by exploring the parent's perception of online game and its influencing variables.

• Journal of the Korean Society for information Management
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• v.16 no.2
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• pp.81-104
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• 1999

Researchers commonly begin a project by studying past works in the area and deriving relevant information and ideas from their predecessors. In presenting their works researchers acknowledge their debts to preflecessors by carefully documenting each source to indicate what they borrowed. The obvious form of plagiarism is to cokx without crediting the sources. Students have to learn how to quote and how to make reference lists or works cited at the end of their reports which allow readers to locate and use the sources they used for their reports. Nowadays online information sources through the internet increase day by day, but there is no standard documentation style for citing these sources. In this paper up-to-date documentation styles recommened by APA(American Psychological Association) and MLA(Modern Language Association) are introduced. It was found that the graduate schools and the academic societies in Korea do not keep a certain documentation style consistently by checking the school catalogs and the policy statements on manuscript submisssion to the journals.

• Journal of The Korean Association of Information Education
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• v.8 no.1
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• pp.113-125
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• 2004

A new on-line essay test system that write the articles to manuscript paper which has two hundred squares for characters, look over and correct the manuscript paper in environment of on-line network like the real essay test is designed and implemented in this thesis. Using this system, a participant can write the articles to manuscript paper, a scorer look over and can correct the articles on manuscript paper directly. When looking over and correcting manuscript paper in this system, scorer can use a pen-mouse and a tablet. To reduce the network traffic, bitmap format of the manuscript paper is compressed to JPEG format before it is transmitted to server. The system is cost-effective and has lots of advantages in efficiency and usability. Furthermore, it is expected that the developed system can be used to improve the field of on-line subjective examinations as a counterproposal.

• Journal of The Korean Association of Information Education
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• v.8 no.1
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• pp.1-13
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• 2004

A new on-line essay test system that write the articles to manuscript paper which has two hundred squares for characters, look over and correct the manuscript paper in environment of on-line network like the real essay test is designed and implemented in this thesis. Using this system, a participant can write the articles to manuscript paper, a scorer look over and can correct the articles on manuscript paper directly. When looking over and correcting manuscript paper in this system, scorer can use a pen-mouse and a tablet. To reduce the network traffic, bitmap format of the manuscript paper is compressed to JPEG format before it is transmitted to server. The system is cost-effective and has lots of advantages in efficiency and usability. Furthermore, it is expected that the developed system can be used to improve the field of on-line subjective examinations as a counterproposal.

• The Journal of the Korea Contents Association
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• v.18 no.2
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• pp.427-437
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• 2018

This study explored the effectiveness of the online English learning program contents for elementary school students. The study used the online English learning program served by Gyeonggi province office of education. 107 students attending P elementary school in K city volunteered for the program. After studying English via the website for almost one year, they were asked to respond the questionnaires related to the contents of the online English program. Since the research investigated that the relations of students' grades, the time for the study, their diagnostic test scores, and the effectiveness of the contents, the survey responses were analyzed with Spearman correlation. As a result, older students thought that the type of problem-solving, the type of performing a task, WBI (Web Based Instruction) were not efficacious. Also, these types of online English program were chosen as ineffective from the students at the higher level. Whereas the type of private lesson, the lessons based on a story, and the type of animation were preferred to the students who spent longer time on the website. This highlights the need to consider the students' characteristics such as students' grades, the time for the study, and their English level when developing the contents of the online English learning program.

• Journal of KIISE:Computer Systems and Theory
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• v.32 no.2
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• pp.68-74
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• 2005

In deadline scheduling, jobs have deadlines by which they are completed. The scheduling algorithm determines which jobs are executed at each time. Then only the completed jobs contribute to the throughput or gain of the algorithm. The jobs have arbitrary weights and the gain of the algorithm is given as the sum of weights of the completed jobs. The goal of the scheduling algorithm is to maximize its gain. In this paper, we consider online non-preemptive scheduling, where jobs arrive online and the scheduling algorithm has no information about jobs arriving ahead. Also the jobs cannot be preempted or rejected while they are executed. For this problem, we obtain lower bounds for any online algorithms and also we propose an optimal online algorithm meeting the lower bounds.