• Journal of Internet Computing and Services
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• v.9 no.2
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• pp.61-68
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• 2008

Authentication for inter-NEMO rooming is on important issue for achieving the seamless mobile networking. In this proposal, the technical challenge lies in the fact that a visited network does not initially have the authentication credentials of a roaming mobile router. This paper proposes an efficient approach for providing AAA service in NEMO environment. This approach uses localized authentication based on the roaming agreement between ISPs. A public key certificate structure is proposed, tailored to the business model of wireless internet Service Providers (ISPs). In this approach, the mutual authentication between a visited network and a roaming user can be performed locally without any control with user's home network. In conclusion, our protocol shown that communication delay can be reduced by overuse 45% overhead in communication delay than the previous AAA approach.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.14 no.6
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• pp.125-130
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• 2014

In recent years, the IT conversions have rapidly developed along the development of the information technologies and devices. The overuse of IT devices caused by this trend has weakened the physical condition of children these days, compared to the past, therefore a study for this problem is necessary. This study intends to improve the health of children, easy to lack physical activities caused by the addiction to PC and smart phones, by proposing a health care application for them using Kinect. This application will introduce some simple aerobic/anaerobic exercises that could be done in home and will help children to forget the boredom by exercising alone and to coach them by using it.

• Journal of Internet Computing and Services
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• v.16 no.3
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• pp.95-104
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• 2015

In recent years, in accordance with the rapidly increasing number of smartphone users, various social problems have started to occur. Examples of these problems are the overuse of smartphones and bad usage habits of smartphone users that can cause new social problems such as smartphone addiction and other smartphone related diseases. With the aim of preventing these social problems, this paper proposes a new smartphone addiction and disease prevention system. This system was developed by collecting and analyzing smartphone usage patterns. This proposed system analyzes the usage patterns and working hours of smartphone users in real time. If the detected smartphone usage patterns reach a dangerous level, the system will send warning messages to the user. This will enable users to recognize the unhealthy situation in advance by themselves. In addition, this solution could possibly prevent smartphone addiction and other smartphone related illness by preventing overuse and encouraging abstinence from using smartphones to the extent that it becomes harmful to the user.

• Journal of the Korea Convergence Society
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• v.13 no.3
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• pp.173-184
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• 2022

Focusing on the TikTok, this paper studies the factors that influence the use intention, flow and addiction of the elderly in short videos from three aspects of media attraction, perceived usefulness and user characteristics through quantitative research methods. In recent years, influenced by various factors, more and more seniors have begun to indulge in short form videos, which will do harm to their physical and mental health. Therefore, the researchers believe it is necessary to identify the behavioral intention of seniors and the path to addiction. According to the research results, the attractiveness of TikTok and the characteristics of seniors have a positive impact on the usefulness of media. In addition, the study confirms that media usefulness has an impact on use intention and use behavior, which may develop into immersion and addiction. This study not only supplements the classical TAM theory, but also provides a reference for helping seniors to use the Internet in a healthy way. The researchers look forward to expanding the research on the various Internet platforms used by seniors in different countries and regions.

• The Journal of the Korea Contents Association
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• v.14 no.8
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• pp.329-341
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• 2014

This study investigated the differences of internet addiction by gender and the psychological states(depression, anxiety, impulislvity and aggression) by internet addiction groups and the relationship of depression, anxiety, impulsivity and aggression with internet addiction by resilience as moderator. The 529 college students (male: 212, female: 317) of 5 universities of Jeonbuk Province participated in this study. Main results are as follows; First, the intenet addiction level of male college students was higher than female students, and the higher internet addiction was, the higher depression and impulsivity were. Second, depression. anxiety, impulsivity and resilience were correlated with internet addiction. But aggression was not correlated with it. Third, anxiety and implusivity(male college students), depression and impulsivity(female college students) were correlated with internet addiction or overuse. Fourth, resilience was proved to function as moderator in the prediction of depression on internet addiction of only female college students. The limitation and future tasks were discussed.

• Journal of The Korean Association of Information Education
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• v.6 no.2
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• pp.225-233
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• 2002

Students are getting more opportunities to use the internet at school and home with the development of information & communication technology and the spread of computers. It can be used for education; otherwise, it also has some negative side effects, such as, the circulation of unsound information, game addiction, the misuse and overuse of information. Information communication ethics education is needed to protect students from those negative side effects in cyber space. This paper presents the systematic education contents and ways to teach correct information communication ethics education form the results of questionaires to students, teachers and parents, and other related study.

• Journal of Internet of Things and Convergence
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• v.6 no.3
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• pp.45-52
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• 2020

In the paper, we propose a system that measures various agricultural parameters that affect crop yield and monitors location information. According to an analysis by international organizations, 60% of the world's population lives on agriculture. In addition, 11% of the world's soil is used for growing crops. For this reason, agriculture plays an important role in national development. If a problem occurs in agriculture due to weather or environmental problems, it can be a problem for national development. In order to solve these problems, it is important to modernize agriculture using modern IoT technology. It is possible to improve the agricultural environment by applying IoT technology in agriculture to build a smart environment. Through such a smart environment, it is possible to increase the yield of agricultural products, reduce water waste, and prevent overuse of fertilizers. In order to verify the proposed system, an experiment was performed in a soybean cultivation farm. Experimental results showed that using the proposed system, the moisture in the cultivated soil can be automatically maintained at 40%.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.20 no.5
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• pp.121-126
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• 2020

In many parts of the world, climate warming has caused tremendous environmental disasters to repeat every year. Overuse of fossil fuels, the main source of energy, has affected the global environment, destroying the global ecosystem and depleting resources. To overcome this, efforts to reduce carbon emissions through the development of renewable energy are being actively studied at home and abroad. Already, new technologies are being reported abroad to reduce carbon emissions. Zero Energy House is a model that reduces low carbon emissions and energy use due to the use of high-density materials for high-heated materials, and can live in real life by receiving the minimum required energy through renewable energy. Although the government is trying to apply this in Korea, it is difficult to become common because of the lack of economic feasibility. The purpose of this study is to study models that can zero carbon emissions, which are eco-friendly elements, secure construction economy of zero energy house by using ventilation system, heat exchanger and energy storage system for public use, and attach automation system to window opening/closing to maintain indoor temperature.

• The Journal of Korean Association of Computer Education
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• v.16 no.4
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• pp.23-31
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• 2013

The purpose of this study is to examine if educational programs to intervene with smartphone addiction developed for elementary school students are effective in reducing their smartphone overuse that has been rapidly increasing nowadays. To attain the goal, the study analyzes internet addiction intervention programs previously developed with the cognitive behavior therapy of which effectiveness has been verified in psychotherapy for those showing addiction, and based on that, it develops and applies educational programs to intervene with smartphone addiction. The conclusions the paper has drawn are as follows: First, educational programs to intervene with smartphone addiction are effective in reducing the tendencies of smartphone addiction of those students using smartphones too much for their irrational thinking or habitual behavior. Second, educational programs to intervene with smartphone addiction will facilitate behavioral changes regarding negative factors of smartphone addiction such as maladaptation in everyday life or tolerance and also help the reconstruction of elementary school students' positive cognition on smartphone use.

• Journal of the Korea Society of Computer and Information
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• v.25 no.3
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• pp.163-168
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• 2020

In this paper we propose a The purpose of this study was to examine the psychological characteristics of youth mobile phone use. Internally, we want to find out about self-regulation, interpersonal relationship, pleasure, and desire to achieve reality. For the research, the Korea Information Society Agency utilized 568 data based on self-control and user motivation among long-term tracking data of Internet and mobile phone addiction in 2018. The SPSS window 23 version was used for data analysis, and the data collected were analyses to identify the subject's demographic characteristics. In addition, the correlation of variables between groups was investigated by analyzing dummy variables, and the results of the study were as follows. First, the addiction was slightly higher in mobile phone game groups than in social network service (SNS) groups, but in the same period of use, social network service (SNS) groups showed a higher desire for interpersonal relationships. In the desire to avoid reality, mobile phone game groups showed a higher gap than social network service (SNS) However, there was no difference between groups in terms of pleasure and desire to achieve. The results of this study indicated that the content of mobile phone use differed in factors affecting mobile phone overuse, and suggestions for follow-up research were discussed.