• Journal of Convergence for Information Technology
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• v.9 no.11
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• pp.202-211
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• 2019

This study was conducted to identify the correlation between smartphone addiction, sleep quality, and depression in college students. The participants were 304 college students in G area. Data were collected using self-report questionnaires and data were analyzed by frequency, percent, mean, standard deviation, t-test, One way ANOVA and Pearson correlation coefficient. The results showed that there was a significant negative correlation between smartphone addiction and sleep quality, a significant positive correlation between smart addiction and depression, and a significant negative correlation between sleep quality and depression. Therefore, the results of this study can be used as a useful basic data when looking for education and program development strategies to improve and prevent smartphone addiction, sleep quality, and depression of college students. In addition, it is required to apply a systematic educational program considering this.

• Journal of Convergence for Information Technology
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• v.9 no.10
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• pp.213-219
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• 2019

This study is a descriptive research on the relationship among smartphone addiction, lack of sleep and sleeping hours of undergraduates. The subjects include 280 students enrolled in G university and data were collected from Sep. 6 to Oct. 10, 2018. On average, each score of smartphone addiction, sleeping hours and lack of sleep was $34.79{\pm}7.6$, $6.43{\pm}1.34$ and $10.14{\pm}3.14$ respectively. Smartphone addition had a significantly positive correlation with lack of sleep(r=.277, p<0.01) and a positive correlation with its sub-areas, such as disability in daily life(r=.269, p<0.01), virtual(r=.151, p<0.01), withdrawal(r=.303, p<0.01), tolerance(r=.184, p<0.01). The education and counselling for preventing undergraduates from smartphone addiction and further studies on them are required.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.24 no.11
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• pp.1457-1462
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• 2020

There are dozens of applications on the smartphone. The service application that manages the loading, deletion, and deployment of these applications is called a smartphone launcher, and various launchers are used. Some of the existing launchers provide a function to automatically place icons by analyzing user application usage patterns. In this paper, we present a method of automatically arranging icons so that the icons are balanced on the smartphone screen. The usefulness of our method is illustrated by some exaples. In this case, it is proved that in an m × n screen layout with a height of m and a width of n, if n is an odd number, the entire screen can always be arranged in a balanced manner regardless of the n value by mathematical induction method.

• Journal of Convergence for Information Technology
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• v.12 no.4
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• pp.47-55
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• 2022

This study was conducted to identify the correlation between dental hygiene students' overdependence on smartphones, sleep deprivation, and self-control, and factors influencing self-control. 267 college students in the department of dental hygiene located in the Chungcheong area were surveyed and analyzed. Smartphone overdependence was positively correlated with sleep deprivation and smartphone overdependence was negative correlated with self-control. The sleep deprivation was negative correlated with self-control. Factors affected to self-control were problematic results and sleep deprivation. Therefore, it is necessary to develop education and programs that can increase the self-control of dental hygiene students and to prepare measures to prevent sleep problems and overdependence on smartphone.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.24 no.2
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• pp.161-166
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• 2024

The current generation of adolescents stands out as the most digitally interconnected in the annals of history, navigating an era characterized by unprecedented levels of technological connectivity. This study explored the impact of smartphone addiction on the quality of peer relationships among adolescents, with a focus on the mediating role of depression. Analyzing data from 2,288 responses of 14-year-old adolescents extracted from the 2022 cross-sectional data of the Korean Children and Youth Panel Survey 2018, research questions were tested. The findings showed that smartphone addiction among adolescents exacerbates depression, consequently leading to a deterioration in the quality of peer relationships. The results contribute to expanding scholarly understanding of the intersection between digital technology and the mental and social well-being of adolescents. Furthermore, there is a call to action for parents, teachers, counselors, policy maker, and practitioner in education institutions to establish programs that monitor and intervene in cases of excessive smartphone use among adolescents.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.5
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• pp.353-361
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• 2020

This study examined the effects of pre-service early childhood teacher's adult-attachment, mental-health and resilience on smartphone addiction tendency. The participants were 283 pre-service early childhood teachers in Seoul and Kyungkido. Collected self-report data were analyzed by correlation analysis and hierarchical regression analysis. The results were as follows. First, there were 228 people (81 percent) in the regular user group and 55 people(19 percent) in the risk user group. Second, there were significant differences in adult-attachment, mental-health and resilience according to smartphone addiction tendency. Third, anxiety(adult-attachment) and mental-health had a positive correlation, and control and affirmation(resilience) had a negative correlation with pre-service early childhood teachers' smartphone addiction tendency. Fourth, all variables influenced pre-service early childhood teachers' smartphone addiction tendency. This study provides practical suggestions for smartphone usage and preventive measures for pre-service early childhood teachers' smartphone addiction.

• Journal of Digital Convergence
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• v.16 no.3
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• pp.395-405
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• 2018

The purpose of this study is to investigate the effects of parental rearing attitudes on smartphone addiction and mediation effect of children's aggression and impulse between them. The randomly chosen 390 subjects of the 4th and 5th elementary school students (boy: 199, girl: 191) of J City participated in this research. The main scales were EMBU-Shot, Smartphone Addiction Scale and NEO-PAS. Spss 22.0 was used for its statistical analysis, that is correlation analysis and regression analysis. The main results are as follows. First, parental rearing attitude, smartphone addiction, and aggression and impulse were statistically significantly correlated. Second, it is testified that rejective parental rearing attitudes statistically significantly increasingly influenced smartphone addiction with partial mediation of aggression and impulse. Also overprotective parental rearing attitudes statistically significantly increasingly influenced smartphone addiction with full mediation of them. It suggested the importance of intervention for aggression and impulse of the children with smartphone addiction as well as parental rearing attitude changes in intervening and counseling them. This study tried to supply evidence-based and basic data for the developing preventive education and counseling programs for them. The limit and future tasks were discussed.

• Journal of Intelligence and Information Systems
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• v.19 no.3
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• pp.45-55
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• 2013

Thereby using smartphone and mobile device be more popular the more people utilize mobile device in many area such as education, news, financial. In January, 2007 Apple release i-phone it touch off rapid increasing in user of smartphone and it create new market and these broaden its utilization area. Smartphone use WiFi or 3G mobile radio communication network and it has a feature that can access to internet whenever and anywhere. Also using smartphone application people can search arrival time of public transportation in real time and application is used in mobile banking and stock trading. Computer's function is replaced by smartphone so it involves important user's information such as financial and personal pictures, videos. Present smartphone security systems are not only too simple but the unlocking methods are spreading out covertly. I-phone is secured by using combination of number and character but USA's IT magazine Engadget reveal that it is easily unlocked by using combination with some part of number pad and buttons Android operation system is using pattern system and it is known as using 9 point dot so user can utilize various variable but according to Jonathan smith professor of University of Pennsylvania Android security system is easily unlocked by tracing fingerprint which remains on the smartphone screen. So both of Android and I-phone OS are vulnerable at security threat. Compared with problem of password and pattern finger recognition has advantage in security and possibility of loss. The reason why current using finger recognition smart phone, and device are not so popular is that there are many problem: not providing reasonable price, breaching human rights. In addition, finger recognition sensor is not providing reasonable price to customers but through continuous development of the smartphone and device, it will be more miniaturized and its price will fall. So once utilization of finger recognition is actively used in smartphone and if its utilization area broaden to financial transaction. Utilization of biometrics in smart device will be debated briskly. So in this thesis we will propose fingerprint numbering system which is combined fingerprint and password to fortify existing fingerprint recognition. Consisted by 4 number of password has this kind of problem so we will replace existing 4number password and pattern system and consolidate with fingerprint recognition and password reinforce security. In original fingerprint recognition system there is only 10 numbers of cases but if numbering to fingerprint we can consist of a password as a new method. Using proposed method user enter fingerprint as invested number to the finger. So attacker will have difficulty to collect all kind of fingerprint to forge and infer user's password. After fingerprint numbering, system can use the method of recognization of entering several fingerprint at the same time or enter fingerprint in regular sequence. In this thesis we adapt entering fingerprint in regular sequence and if in this system allow duplication when entering fingerprint. In case of allowing duplication a number of possible combinations is $\sum_{I=1}^{10}\;{_{10}P_i}$ and its total cases of number is 9,864,100. So by this method user retain security the other hand attacker will have a number of difficulties to conjecture and it is needed to obtain user's fingerprint thus this system will enhance user's security. This system is method not accept only one fingerprint but accept multiple finger in regular sequence. In this thesis we introduce the method in the environment of smartphone by using multiple numbered fingerprint enter to authorize user. Present smartphone authorization using pattern and password and fingerprint are exposed to high risk so if proposed system overcome delay time when user enter their finger to recognition device and relate to other biometric method it will have more concrete security. The problem should be solved after this research is reducing fingerprint's numbering time and hardware development should be preceded. If in the future using fingerprint public certification becomes popular. The fingerprint recognition in the smartphone will become important security issue so this thesis will utilize to fortify fingerprint recognition research.

• Journal of the Korea Convergence Society
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• v.9 no.10
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• pp.355-362
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• 2018

This study aims to examine the relationship between physical education class activity of youth, smartphone dependence and school life adaptation. The data set of Korean Children and Youth Panel Survey(KCYPS) by National Youth Policy Institute was reanalyzed for this study. The subjects of this study were 2,351 second grade middle school students from 2011. The data were coded with the use of the statistics program on Windows, SPSS 23.0. To analyse the data, descriptive analysis, reliability analysis, one-way ANOVA and regression analysis were employed. The findings of this research are as follows. First, the difference between the activity hours of youth physical education classes and the reliance on smartphones is less dependent on smartphones as they participate enthusiastically in physical education classes. Second, the difference of physical education class activity time and school life adaptation among adolescents was more positive for school life adaptation as learning activity, peer relationship and teacher relationship were more active. third, the dependence of youth on smartphones has a positive effect on learning activities and school rules as the reliance on smartphones is low.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.8
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• pp.474-481
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• 2018

The purpose of this study was to examine the mediating effects of maternal family experience on the relationship between mothers' tendency to addicted to smartphones and the social competence of young children. The subjects of this study were 481 mothers who delivered infants to a kindergarten or daycare center in Jeju area After conducting the questionnaire, the results of the responses were analyzed. To analyze the collected data, structural equations were implemented using SPSS Statistic 18.0 program. The results of this study are summarized as follows. First, the correlational analysis showed that the tendency of the addiction of smartphone and the social ability of the infant showed a significant correlation with the mother's family experience. Second, in the relationship between the mother's smartphone tendency and the social competence of the infant, The research model and the competition model were set up to examine the mediating effect and the competition model was found to be more appropriate. As a result, it can be seen that mother's original family experience is partly mediated in relation to mother's tendency to add to smartphone and social competence of infant. Based on these results, the implications of this study and suggestions for subsequent research were discussed.