• Journal of the Korea Society of Computer and Information
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• v.23 no.7
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• pp.39-47
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• 2018

This paper confirms the risk of using smartphone through the analysis of collected usage pattern and proposes the smartphone intervention system in risk situations. In order to check the risk of smartphone usage, we made information collecting application and collected smartphone usage pattern from 11 experiment participants for two months. By analyzing smartphone usage pattern, we confirmed that about 12% of smartphone usage is being used in driving, walking, and on the street. In addition, we analyzed the response rate of smartphone notification in risk situations and confirmed that user responds the smartphone notifications in real-time even in risk situations. Therefore, it is required to present a system that intervenes the use of smartphone in order to protect smartphone users in risk situations. In this paper, we classify risk situations of using smartphone. Also, the proposed smartphone intervention system is designed to periodically detect risk situations. In risk situations, smartphone function can be restricted according to user setting of smartphone. And smartphone can be used normally when safe situation is restored.

• International Journal of Internet, Broadcasting and Communication
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• v.15 no.4
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• pp.61-73
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• 2023

As smartphone use is increasing within the middle-aged population, society should pay closer attention to the mental health problems associated with smartphone addiction. This study examines the possibility that depression, anxiety, and ADHD can be interpreted not only as negative aspects, but also as positive aspects, in an addiction-related individual. We used habitual and addictive smartphone behavior as the dependent variables; anxiety, ADHD, depression, and habitual smartphone use as the independent variables; and self-control as a moderating variable. Depression and ADHD in smartphone users were found to be associated with higher levels of addictive smartphone use. Anxiety was having negative effect on addictive smartphone use. However, habitual smartphone use didn't significantly affect addictive smartphone use. Further analysis indicated that depression, anxiety, and ADHD have mediating effects on habitual smartphone use. This study confirmed that psychological factors in adults, as well as habitual/addictive smartphone use and self-control, significantly influence smartphone overdependence.

• The Journal of Korean Physical Therapy
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• v.34 no.6
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• pp.283-291
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• 2022

Purpose: The purpose of this study was to compare and analyze the method of measuring the angle of the trunk rotation using a smartphone with 3D smartphone holder compared to a scoliometer, which is a measuring tool used as a method for diagnosing scoliosis in scoliosis patients. Methods: Angle of trunk rotation was measured in 21 subjects diagnosed with scoliosis. scoliometer measurement method, a smartphone measurement method with a 3D smartphone holder, a smartphone blind measurement method with a 3D smartphone holder, a smartphone measurement method without a smartphone holder, a smartphone blind measurement method without a smartphone holder, and a total of five measurement methods were repeated three times for comparison and analysis. Results: The smartphone measurement method with a 3D smartphone holder has excellent intra-rater reliability of angle of trunk rotation (Rater A; ICC3, 2≥0.993, Rater B; ICC3, 2≥0.992). The smartphone blind measurement method with a 3D smartphone holder has excellent inter-rater reliability of angle of trunk rotation (ICC2, 2≥0.968). The scoliometer measurement method had the highest validity (r=0.976) with the smartphone measurement method with a 3D smartphone holder, and the blind measurement method without a smartphone holder had the lowest validity (r=0.886). Conclusion: These findings, the angle of trunk rotation measured by the smartphone measurement method with a 3D smartphone holder in scoliosis patients showed high reliability and validity compared to the scoliometer measurement method.

• The Korean Journal of Community Living Science
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• v.27 no.3
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• pp.371-385
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• 2016

This study was carried out to provide basic data for the promotion of the educational and social relations of adult learners and the effective way to use the smartphone. To accomplish this, we studied the influence of the degree of smartphone usage on the educational and social relations of college students in the area of Kyung-In and the mediator effect of smartphone addiction. According to this study, the research results were as follows: Firstly, the degree of smartphone usage did not directly affect family relationships, but highly affected smartphone addiction; smartphone addiction had both a negative effect on family relationships and a negative mediator effect between the degree of smartphone usage and family relationships. Secondly, smartphone addiction negatively affected the relationships with the opposite sex, whereas the degree of smartphone usage did not; however, there was a negative mediator effect between the time of using the smartphone and relations between the sexes. Thirdly, smartphone addiction negatively affected relationship with friends, whereas the degree of smartphone usage did not; there was no mediator effect between the time of using the smartphone and relationship with friends. Fourthly, smartphone addiction negatively affected the relationship with professors, whereas the degree of smartphone usage did not; there was no mediator effect between the time of using the smartphone and relationship with professors. The implications of these results are discussed.

• Journal of the Ergonomics Society of Korea
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• v.31 no.5
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• pp.695-704
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• 2012

Objective: The purpose of this study was to investigate major factors influencing adoption of smartphone to promote its use by older adults. Background: Despite increasing proportion of elderly people and elderly market, the proportion of elderly smartphone user is still relatively small compared to whole smartphone users. Thus, we need to find out major factors influencing adoption of smartphone to increase proportion of elderly smartphone users. Method: Seven major factors were extracted from 36 survey questions using factor analysis. Regression analysis was also applied to determine specific factors affecting intention of use based on user versus non-user of smartphone, age, gender, and educational background. Results: As results of factor analysis and regression analysis, major factors influencing adoption of smartphone for elderly users were significantly different according to gender, age, educational background based on smartphone users or non-users. Conclusion: The result of this study identified major factors influencing adoption of smartphone for the elderly and provided basic information related to adoption of smartphone according to elderly people's characteristics. Consequently, we can expect to reduce the information gap and to improve quality of life for the elderly. Application: The development and marketing strategy could be applied differently based on the factors influencing adoption of smartphone. It is also possible to develop a prediction model for smartphone adoption according to elderly users' characteristics.

• Korean Journal of Childcare and Education
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• v.16 no.6
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• pp.53-70
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• 2020

Objective: The purpose of this study is to analyze the mediating effects of mother's smartphone addiction on the relationship between mothers' parenting stress and young children's smartphone addiction. Methods: This study conducted a survey targeting a total of 327 mothers with young children between the ages of 3-5 years that were attending kindergartens and daycare centers in Gyeonggi-do, Gangwon-do, and the Busan region. After exploring the relationship between mothers' parenting stress, mothers' smartphone addiction, and young children's smartphone addiction based on the collected data, this study comparatively analyzed the complete mediation and partial mediation models by using the structural equation. Results: The mothers' smartphone addiction played a partial mediating role in the relationship between mothers' parenting stress and young children's smartphone addiction. In other words, the mothers' parenting stress and mothers' smartphone addiction were important variables for young children's smartphone addiction. Conclusion/Implications: This study aims to provide basiv data for the prevention of problems caused by young children's smartphone addiction, by exploring the paths of mothers' parenting stress and mothers' smartphone addiction which have effects on young children's smartphone addiction.

• International Journal of Contents
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• v.14 no.4
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• pp.1-9
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• 2018

This study evaluates the effectiveness of smartphone detox program for smartphone addiction among university students. To reduce the rate of smartphone addiction and its negative effects on physical, mental and social wellness, a six-session program was applied to sixteen participants who voluntarily completed the entire program and responded to pre-post survey. Smartphone Addiction Proneness Scale (SAPS) was used for smartphone addiction assessment with Mental Health Scale, Positive Psychological Capital Scale for mental wellness and Self-Management Scale for physical and social wellness. Results received after the program indicated that, smartphone addiction and mental health scores decreased significantly while the average scores of self-management and positive psychological capital increased respectively. Furthermore, the rate of high-risk group decreased, and the participants, affirmed in their self-evaluation report that excessive use of smartphone negatively affects their body, mind and interpersonal relationship. Thus, smartphone detox program is effective in reducing smartphone addiction and improving the students' wellness.

• Journal of Biosystems Engineering
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• v.42 no.4
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• pp.330-338
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• 2017

Purpose: The smartphone is actively being used in many research fields, primarily in medical and diagnostic applications. However, there are cases in which smartphone-based systems have been developed for agriculture, environment, and food applications. The purpose of this review is to summarize the research cases using smartphone cameras in agriculture, environment, and food. Methods: This review introduces seventeen research cases which used smartphone cameras in agriculture, food, water, and soil applications. These were classified as systems involving "smartphone-camera-alone" and "smartphone camera with optical accessories". Results: Detecting food-borne pathogens, analyzing the quality of foods, monitoring water quality and safety, gathering information regarding plant growth or damage, identifying weeds, and measuring soil loss after rain were presented for the smartphone-camera-alone system. Measuring food and water quality and safety, phenotyping seeds, and soil classifications were presented for the smartphone camera with optical accessories. Conclusions: Smartphone cameras were applied in various areas for several purposes. The use of smartphone cameras has advantages regarding high-resolution imaging, manual or auto exposure and focus control, ease of use, portability, image storage, and most importantly, programmability. The studies discussed were achieved by sensitivity improvements of CCDs (charge-coupled devices) and CMOS (complementary metal-oxide-semiconductor) on smartphone cameras and improved computing power of the smartphone, respectively. A smartphone camera-based system can be used with ease, low cost, in near-real-time, and on-site. This review article presents the applications and potential of the smartphone and the smartphone camera used for various purposes in agriculture, environment, and food.

• The Journal of Korean Society for School & Community Health Education
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• v.16 no.1
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• pp.65-81
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• 2015

Objectives: This descriptive study was aimed to investigate the related factors of smartphone addiction among preschool children. Methods: The subject of study was 186 smartphone using mothers with children between 3 to 6 years old in Busan. Data were collected with self-administered questionnaires from July to November, 2013 at nurseries, preschools, and cultural center. Data were analyzed using descriptive statistics, t test, ANOVA, and stepwise multiple regression. Results: 79.6% of children have ever used smartphone and mean smartphone addiction of them were 26.77 based on 60 points. The related factors of smartphone addiction among children were the children's smartphone usage time per day (less than 0.5 hours vs 0.5-0.9 hours (p=0.004), less than 0.5 hours vs more than 1.0 hours (p<0.001), mother's smartphone addiction (p<0.001), and perceived mother's permission level compared to other children's mothers (p=0.004), which 3 factors explained 39% of variance of smartphone addiction of children. Conclusions: Considering the related factors of smartphone addiction among preschool children, mothers should recognize the importance of the their use smartphone and attitude toward smartphone use of children, and take measure to limit children's excessive use of smartphone.

• Korean Journal of Childcare and Education
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• v.17 no.6
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• pp.149-168
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• 2021

Objective: The purpose of this study was to analyze the structural relationship between fathers' involvement in parenting, mother's parenting stress and smartphone addiction, and children's smartphone addiction. Methods: The subjects of this study were 327 children aged between 3 and 5 who were attending nurseries and kindergartens in Gyeonggido, Gangwondo, and Busan, South Korea, and their mothers, fathers, and teachers. The data collected from the subjects were analyzed based on correlation analysis and structural equation modeling. Results: First, the fathers' involvement in parenting had a direct effect on their children's smartphone addiction, and no direct effect on the mother's parenting stress and smartphone addiction. Second, the mother's parenting stress had a direct effect on the mother's smartphone addiction and direct and indirect effects on their children's smartphone addiction. Third, the mother's smartphone addiction had a direct effect on their children's smartphone addiction. Conclusion/Implications: The findings in this study suggest the fathers' involvement in parenting and the mother's parenting stress and smartphone addiction have effects on their children's smartphone addiction. Based on these results, the study proposed ways to prevent children's addiction to smartphones and provided suggestions for further research.