• Journal of Digital Convergence
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• v.13 no.2
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• pp.299-308
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• 2015

This study investigated the differences of the ego-resilience and disagreement in parents' rearing attitude according to the levels of the smartphone addiction of adolescents. To conduct this study, 317 adolescents participated in the survey. The major findings of the study was as follows: First, the smartphone addiction rate was 21.1%, which the high risk group rate was 5.3% and potential risk group rate was 15.8%. Second, ego-resilience was indicated to be lower in the high risk user group than the potential risk user group and the general user group, and disagreement in parents' rearing attitude was indicated to be higher in the high risk user group than the general user group, thereby having indicated to have statistically significant difference. The results of this study, it could be known that ego-resilience and agreement of parents' rearing attitude was significant factors to prevent smartphone addiction of adolescents.

• Journal of the Korea Convergence Society
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• v.13 no.5
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• pp.279-286
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• 2022

The purpose of this study is to examine the mediating effect of physical activity in the relationship between generalized anxiety disorder and overdependence on smartphones in adolescents. To find a way for solving the problems caused by the over-use of smartphones during adolescence, we tried to find the importance of a health promotion program through physical activities. For the purpose of the study, the 2020 Youth Health Behavior Survey data conducted by the Ministry of Education, the Ministry of Health and Welfare, and the Korea Centers for Disease Control and Prevention were used as analysis data for this study. As a result of the study, firstly, generalized anxiety disorder has a negative (-) relationship with physical activity, and physical activity also has a negative (-) relationship with overdependence on smartphones. Secondly, as a result of analyzing the mediating effect of physical activity in the relationship between generalized anxiety disorder and smartphone overdependence experience, the physical activity was found to be a significant factor. Thirdly, it was confirmed that the physical activity has a partial mediating effect in the relationship between generalized anxiety disorder and smartphone overdependence experience. Increasing physical activity through team sports rather than individual sports may help reduce smartphone use.

• IEMEK Journal of Embedded Systems and Applications
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• v.12 no.4
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• pp.259-266
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• 2017

GPS was developed for military purposes. As a result, it is used as a military important means such as guided weapons and strategy / tactics. However, GPS depends on the communication infrastructure and is affected by interference signals. In this paper, we propose a secure micro - web page - based smart map that can enhance security without relying on communication infrastructure on the battlefield. The proposed system consists of general smartphone, security QR, central server and smart map. Only use the network when downloading the security key and SmartMap before the task starts. During operation, the smartphone transmits and receives data using a secure QR. The security QR inserts the security code to prevent forgery and falsification and confirms whether the data is authentic by checking whether the smart phone is forged or not. As a result of implementation, we solved communication security problem of existing technology by using location based service without relying on communication infrastructure.

• Journal of the Korea Society of Computer and Information
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• v.21 no.8
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• pp.95-103
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• 2016

Food habit forming the basis for a lifetime of food and nutrient intake is established in early childhood and has an effect to the child's growth, sociality, and obesity. A variety of nutrition screening tools exists for assessing the health and nutrition status of children such as the Growth Curve, for determining if growth is appropriate. Body mass index(BMI) as a more reliable index of overweight to prevent childhood obesity, and Nutrition Quotient(NQ) and eating behaviors questionnaire for young children and parents to estimate their nutrient intake adequate or not. Such tools are mainly used by health practitioners, such as doctor and dietitian to provide nutrition intervention services to children at risk, especially and are not easy to use for general parents, who need assessment at any time and at any place. We propose Growth Assistance System for infants and children, which is possible to assess their physical condition, nutritional status, and eating behavior integrated. To be convenient and portable, it is implemented over the smartphone as an application. The system offers the growth charts, the BMI curves, NQ and eating behavior questionnaire to take a monitoring and the functionalities operate well. We hereby expect this system support the normal growth and development of infants and young children. And also support for the health practitioner (dietitians and nutritionists) to take a role in providing nutrition counseling and education to children needing nutrition services.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.6
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• pp.309-316
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• 2020

The aim of this study was to identify the relationship between smartphone usage time and oral health among Korean adolescents using data from the 13th (2017) Korea Youth Health Behavior Survey, which included 62,276 subjects. The daily smartphone usage time was categorized as not used, less than 2 hours, more than 2 hours, less than 4 hours, and more than 4 hours. Our results reveal that 60.1% of participants and 61.7% of smartphone users experienced oral disease symptoms annually, 27.4% of total adolescents used smartphone more than 4 hours daily during weekdays, and 53.8% more than 4 hours daily on weekends. The results from multivariate logistic regression analysis adjusting general characteristics show that the adjusted odds ratio (aOR) for risk of oral disease experience was 1.78 (95% confidence interval, CI 1.67-1.91) times higher in the group that used smartphones more than 4 hours a day on weekdays and 1.81 (95% CI 1.70-1.93) times higher in the group that used smartphones more than 4 hours a day on weekends compared to the group that did not use smartphones. The results indicate that smartphone overuse among Korean adolescents has a harmful effect on oral health. Education programs for reducing excessive use of smartphones among adolescents will help promote oral health.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.3
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• pp.219-228
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• 2018

This study examines the influence of smartphone use in old age on satisfaction with relationships with spouse, children and social acquaintances among Korean older adults. Data on older adults aged 60 and over, who live in Seoul, was collected through a questionnaire survey and 674 cases were analyzed. The effects of smartphone use on satisfaction with these three types of inter-personal relationships was tested using a multiple regression analysis, controlling for sex, age, marital status, education, employment status, income and health. The results showed that the smartphone use of older adults did not affect spouse relationship satisfaction, but positively affected both children relationship satisfaction and satisfaction with social acquaintance relationship in old age. This suggests that the positive effects of smartphone use on inter-personal relationships in old age work only to improve relationships with children and social acquaintances, but not to enhance the relationship with one's spouse. This study implies that practical efforts to enhance the smartphone use and the level of informatization among older adults are needed to improve the inter-personal relationships and quality of life in old age.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.264-277
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• 2018

Focusing on the potential impact of information and communication technology (ICT) on older adults' quality of life, this study empirically examined the influence of smartphone use in old age on life satisfaction, depression, social activity and social support of Korean older adults. In order to examine the effects of smartphone use, this study analyzed data from 630 questionnaire surveys from older adults aged 65 and over living in Seoul. The effects of smartphone use were tested using hierarchical multiple regression analysis, controlling for socio-demographic variables such as age, sex, spouse, education and income. Results showed that the effects of smartphone use on life satisfaction, depression and social activity of older adults were statistically significant. However, the effects of smartphone use on social support of older adults was not statistically significant. This study suggests that ICT such as smartphones in old age plays generally positive roles in enhancing psychological, mental and social aspects of quality of life. This implies that further practical efforts to expand the distribution and use of ICT in old age are required to improve quality of life and successful aging of older adults.

• Journal of Korea Entertainment Industry Association
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• v.13 no.2
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• pp.1-12
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• 2019

Based on the capabilities of smartphone cameras which have developed rapidly in recent decades, coupled with and the global market penetration rate, it will study the possibility of various international exchanges through smartphone filmmaking. This aims to achieve a civilian-oriented cultural exchange, instead of simply providing capital-oriented exchanges and film production education. The Smartphone Film Workshop was held as an auxiliary event of the Korea-Vietnam Film Festival, which ran from November 17 to 22, 2017. The three-day workshop, which took place within the festival period, drew attention for its international collaboration project between Korean film directors and Vietnamese film students. The researcher conducted practical-based research while participating as a mentor at this workshop. A step-by-step approach to the entire process of production and post-production was administered, including workshop team composition, scenario, and pre-production in Korea such as shooting equipment, schedule, completion of local works, and screening. Through an analysis of exchange cases at international workshops, we will use trial and error as ways to improve and consider the results of cultural exchanges and the effects of future expectations. Taking this empirical case study into account, we anticipate more active international exchanges through the smartphone workshops.

• Journal of the Korea Society of Computer and Information
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• v.23 no.7
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• pp.91-97
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• 2018

This study has an ultimate purpose to find some change direction of education in the Korean language education field, that is, in and out of the Korean language classroom keeping up with social changes. Especially, this study will investigate progressive educational ways in terms of not only developing software, but also grafting hardware relating to mobile technologies. For this, this study will classify the cases of teaching and learning happened in and out of Korean language classrooms and to introduce practical ways of education to apply mobile technologies according to the each case. As a concrete method, this paper proposed a change plan of classroom change that incorporates 'Miracast' and 'smart phone' and a change plan out of the classroom using mesh. This study can be meaningful in that the teaching and learning are linked more organically through the smart phone and the education is called 'IoT world' so that both teachers and learners can easily access education.

• The Journal of the Korea Contents Association
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• v.10 no.6
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• pp.205-212
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• 2010

Interest in the augmented reality is growing and increase of Smartphone is changing people's life style. The purpose of this study is to explore application method of image restoration based on augmented reality to museum education. Museum is the proper place that audience, including students could learn culture and history of past time. This study suggests that using smartphone application which is used by image restoration with augmented reality is efficient to museum audience's understanding and interest. A game design for domestic museums is planned. Smartphone application which is used by image restoration with augmented reality also could be utilized for exploring historic sites or enjoying local festivals.