• Korean Journal of Health Education and Promotion
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• v.21 no.3
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• pp.1-17
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• 2004

The purpose of this study is to evaluate the roles of expected self-control and expected self-control results in explaining adolescents' Internet addiction. In the study model, expectations of self-control and self-control results directly determine Internet addiction and Internet use time meditates the impacts of expectations of self-control and self-control results on Internet addiction. The study subjects are 1,080 middle and high school students in Busan. Stratified cluster sampling is applied by school type and school year. The response rate is 96%(l,037cases). This study develops the scales of expected self-control and expected self-control results. The scales of Internet addiction are devised by using the concept of functional dependency such as salience, withdrawal symptoms, mood modification, tolerance, relapse, and conflict. For verifying the study model, path analysis and multiple regression models are applied for identifying path significants and evaluating confounding effects of control variables, respectively. Moreover, multi partial F-test is performed for selecting the best regression model. Expected self-control is a significant determinant of Internet addiction and Internet use time that also significantly explains Internet addiction. The total effect of expected self-control towards Internet addiction is -.95. The total effect is comprised with the direct effect (-.71) and the indirect effect(-.24). In this result, the direct effect refers a curative effect since expected self-control directly reduces the level of Internet addiction, and the indirect effect refers a preventive effect because self-control can reduce time of Internet use that is a direct determinant of Internet addiction. In the test of the confounding effects of control variables, there are no confounding effects in the models of multiple regression. It implies a robustness of the study model as regards control variables. In conclusion, improving adolescents' expected self-control can control Internet addiction level. This finding implies that a health promotion program for improving expected self-control can be a cost effective method compared to other approaches.

• 제어로봇시스템학회:학술대회논문집
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• 2000.10a
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• pp.433-433
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• 2000

In this paper, we propose a development of internet teleoperation method applying QoS model, which has the real time control capability and the time-delay predicting capability, The QoS model gives a constant bandwidth to a specified application and makes the dynamically irregular time-delay to be predictable and fined so that it can have real-time capability.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.2
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• pp.73-80
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• 2009

Although it is relatively difficult to eavesdrop the commonly used PSTN in that it is connected with direct circuit, it is difficult to ensure the secret of call on Internet because many users can connect to the Internet at the same time. However, it is needed to ensure secret of voice call in a special situation. Due to the fact that many users can connect to the internet at the same time, VoIP can always be in a defenseless state by hackers. Therefore, in this paper, we have developed the increased voice security internet telephone terminal and measured conversation quality by adopting VPN PPTP based on SIP and using tunnel method in transmitting voice data to prevent eavesdrop of internet telephone.

• Journal of Institute of Control, Robotics and Systems
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• v.7 no.10
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• pp.849-858
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• 2001

One of the important problems which should be solved in the telecontroller control is the time delay problem. In this paper, we propose a method of solving a random time delay problem using QoS(quality of service), and we show not only how to solve an unpredictable time delay problem but also how to compute a maximum time delay that could satisfy a basic assumption of many telecontroller methods. Using our proposed method, it is find that we can offer more stable time delay in telecontroller than using TCP and UDP.

• Journal of the Korean Home Economics Association
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• v.43 no.10 s.212
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• pp.103-114
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• 2005

This study analyzed the effect of parent-child communication and peer relationship on children's internet addiction. The subjects were 642 elementary school students living in Daejeon city. Cronbach's $\alpha$, t-test, ANOVA, and Duncan's test were employed in analyzing the data by using SPSS 10.0. The findings of this study were as follows First, the boys were more addicted to internet use than the girls, as were the children of less educated parents. The children of parents with professional careers were less addicted to the internet. The children who perceived their school achievements as low were more addicted to the internet. Second, the children who spent more time daily, longer time at once and more frequently per weekly internet use were more addicted. Third, internet addiction was influenced tv parent-child communication and peer relationship. Boys who had more problem communications with their parents less open communication with their mother and a lower level of peer support were more addicted to the internet. The problem of communication with their mother and conflict in their peer relationship had more influence on the internet addiction of girls.

• Journal of Korean Academy of Nursing
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• v.37 no.5
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• pp.754-761
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• 2007

Purpose: The purpose of this study was to explore factors related to internet game addiction for adolescents. Method: This study was a cross-sectional survey, and data was collected through self-report questionnaires. Data was analyzed using the SPSS program. Results: In logistic regression analysis, the risk of being addicted to internet games was 2.22 times higher in males than females. Adolescents with low and middle academic performance also had a higher risk(2.08 times and 2.54 times) to become addicted to internet games. For the location of the computer, the risk of becoming addicted to internet games were .01 times lower in the living room or brother or sisters' room than in their own room. The risk of becoming addicted to internet games was 1.18 times higher in the higher usage time of internet games. The risk of becoming addicted to internet games was .49 times lower in the more accepting and autonomic parents' rearing attitude and .02 times lower in the high self-efficacy group than the low group. Conclusion: The result of this study suggests that there are noticeable relationships between internet game addiction and gender, academic performance, location of computer, usage time of internet games, parents' rearing attitude, and self efficacy.

• Journal of the Korean Society for Precision Engineering
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• v.20 no.5
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• pp.108-115
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• 2003

This paper is concerned with the development of Internet-based robot system controlled on the remote site via the Internet. In order to draw the public attention into this exciting system, we built the simple system by which a robot is moved in response to answer for the given OX quizzes. As the primary research fer Internet-based robot control, this study focuses on the development of user-friendly interface by which a beginner achieves information for a robot on the remote site from the 3D virtual simulator and the real camera image. for the compensation of Internet time delay, position prediction simulator is implemented in the user interface.

• Journal of Digital Convergence
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• v.6 no.3
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• pp.93-107
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• 2008

The aim of this study was to draw some suggestions for Internet Policy by using empirical analyses of key factors in Internet addiction in youths. Internet addiction in youths is perceived as a current and significant issue throughout the world. For the purpose of this study, factors that have influence on the Internet addiction of the youth have been explored and analysed empirically of its hypothetical relationships by using the SEM(structural equation modelling). As a result, a few key factors that suggest a strong relationship to Internet addiction in youths have been drawn: subjects' personality, accessibility to the Internet, psychology and communication factor. Particularly accessibility to the Internet, and specifically the duration of time spent online causes the phenomenon of the Internet addiction. This study shows, however, the subjects' personality and communication factor have the most significant causal relationship to Internet addiction. In other word, the Internet addiction has been changing with the various factors including the factors drawn in this study, which are subjects' personality, accessibility to the Internet, psychology and communication factor. Therefore, Internet addiction should not be merely treated as the isolated problem of the Internet itself; rather it should be understood as various dimensions of society, economy, culture etc. Furthermore, some alternatives to deal with the Internet addiction should be found in various approaches.

• Asia pacific journal of information systems
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• v.9 no.2
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• pp.133-150
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• 1999

With the increase of using internet in business, the gathering of customer information with real time process is emphasized more and more. This paper summarized the several characteristics of internet survey as a tool of gathering information of customer, and did empirical test for the effect of the design of cyber shopping mall on the customer's buying decision using internet survey. The survey result shows that the customer's buying decision in cyber shopping mall is affected by design factors such as multimedia and consistent framework of homepage. The survey also shows that as the intention of using cyber shopping mall is high, the more preference for navigation aid, and as the internet experience is long, the less preference for the animation and too much using of graphics.

• Proceedings of the IEEK Conference
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• 2000.06a
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• pp.225-228
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• 2000

In this paper, a design of the reliable video-conference system using CTI(Computer Telephony Integration) technology is proposed. When video-conference is run on the current existing Internet, the transmission delay problem for voice data traffic can be frequently occurred. In order to transmit the real-time voice data through the Internet efficiently, some complicated algorithms such as CODEC(Code/Decode) should be applied. It can cause further excessive processing delay which can affect the overall performance. The voice traffic is usually transmitted through the reliable PSTN(Public Switched Telephone Network) in the CTI system. In this paper a new architecture, in which PSTN for voice traffic and Internet for video traffic are used at the same time instead of using Internet by itself, is proposed to relieve the problems on a video conference.