• Archives of Plastic Surgery
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• 제49권1호
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• pp.121-126
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• 2022

Background Although they may not replace standard training methods that use surgical microscopes, smartphones equipped with high-resolution screens and high-definition cameras are an attractive alternative for practicing microsurgical skills. They are ubiquitous, simple to operate, and inexpensive. This study compared anastomoses of chicken femoral vessels using a smartphone camera versus a standard operative microscope. Methods Forty anastomoses of non-living chicken femoral vessels were divided into four groups. A resident and an experienced microsurgeon performed anastomoses of femoral chicken vessels with 8-0 and 10-0 sutures, using a smartphone camera and a surgical microscope. The time to complete the anastomosis and the number of anastomosis errors were compared using the Mann-Whitney U test. Results The time taken to perform an anastomosis by the experienced microsurgeon was significantly longer when using the smartphone (median: 32.5 minutes vs. 20 minutes, P<0.001). The resident completed the anastomoses with both types of equipment without a significant difference in the operative times. When using a smartphone, the operation times were not significantly different between the resident and the experienced microsurgeon (P=0.238). The resident showed non-significant differences in operation time and the number of errors when using a smartphone or an operative microscope (P=1.000 and P=0.065, respectively). Conclusions Microsurgical practice with non-living chicken femoral vessels can be performed with a smartphone, though it can take longer than with an operative microscope for experienced microsurgeons. The resident may also experience frustration and tend to make more anastomosis errors when using a smartphone versus an operative microscope.

• 한국컴퓨터정보학회논문지
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• 제23권3호
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• pp.101-106
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• 2018

The purpose of this study is to analyze the patterns of unconsciousness smartphone use by using an app and a self-administered survey on smartphone addiction comparatively and examine differences between recognition and behavior about actual smartphone use and examine how smartphone addiction influences learning. With an app installed in smartphones, this author collected and analyzed data about users' unconsciousness using patterns for a month. According to the results, there were significant differences found in users' recognition and actual time for use and also frequency of turning on the display. Also, 22% of the subjects used their smartphone over 8 hours a day, and 76% more than 5 hours. Over 95% turned on the display more than 100 times a day, and in extreme cases, they did more than 300 times. In the meantime, users not only in the smartphone addiction high risk group and the potential risk group but also in the general user group are found to use their smartphone too long and too much and frequently turn on the display. The apps that the general user group is mainly using are entertaining apps, and their school records are rather good, so excessive use does not always lead to addiction or learning disorder. Therefore, if we develop more diverse contents for learning and provide digital literacy education, smartphone use will bring more positive effects instead. In follow-up research, the app should be corrected to collect more accurate information, and as variables in personal areas, this researcher will also measure depression, anxiety, stress, self-esteem, and emotional control, and so on to see how they are associated with smartphone use.

• 한국컴퓨터정보학회논문지
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• 제22권8호
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• pp.33-39
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• 2017

In this paper, we propose a method which implements warning to drivers through real-time analysis of risky and unexpected driver and vehicle behavior using only a smartphone without using data from digital tachograph and vehicle internal sensors. We performed the evaluation of our system that demonstrates the effectiveness and usefulness of our method for risky and unexpected driver and vehicle behavior using three information such as vehicle speed, azimuth and GPS data which are acquired from a smartphone sensors. We confirmed the results and developed the smartphone application for validate and conducted simulation using actual driving data. This novel functionality of the smartphone application enhances drivers' situational awareness, increasing safety and effectiveness of driving.

• 한국IT서비스학회지
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• 제11권4호
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• pp.1-23
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• 2012

The growing interest in smartphones has increased the number of studies conducted on technology acceptance and user satisfaction. It is now over two years since the launching of smartphones, but there are not many researches on the usage behavior of today's smartphone users. Smart devices have evolved from smartphone to smart pad and smart TV, but there are still not many studies on variables such as knowledge about the parent product and the ability to use it. With this, I decided to study how the motivation and the ability of using smartphones affected the smartphone user's intention to use smartpads. This study presents the usage behavior of smartphone users and proves that the ability to use a parent product (smartphone) affects the user's intention to use an extension product (smartpad). The research results showed that the smartphone usage ability affected both variety of use and rate of use. The convenience and passing time factors affected variety of use; and the social interaction, entertainment and passing time factors affected rate of use. As for the intention to use smartpads, the smartphone usage ability and variety of use positively affected the smartphone user's intention to use smartpads. This study showed that the more the user used a smartphone to pass time and for convenience, the more effectively the user could use various functions. It proves that the variety of use of smartphone is highly related to the acceptance of smartpads. This study also proves that usage ability is an important factor in using innovative products, such as smart devices.

• 한국보육지원학회지
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• 제16권6호
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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.

• 한국지역사회생활과학회지
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• 제28권2호
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• pp.289-300
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• 2017

This study was performed to investigate the effects of academic stress and academic burnout on smartphone addiction in junior high school students. A survey was conducted using a convenient sample drawn from 306 students at six junior high schools in Seoul. Data were analyzed using the SPSS 23.0 program. The results show that 21.6% of students were at risk of smartphone addiction. The high risk of smartphone addiction group used smartphone longer during weekdays and weekends. In addition, the high level of academic stress and academic burnout groups showed higher smartphone addiction scores compared to the lower level of academic stress and academic burnout groups. Smartphone addiction was positively correlated with academic stress and academic burnout. Furthermore, the results show that academic achievement and attending class, academic stress and disengagement, and academic burnout affected smartphone addiction. Therefore, to prevent smartphone addiction in adolescents, academic stress should be reduced in adolescents as well as develop educational programs to help students release or control their academic stress.

• The Journal of Korean Physical Therapy
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• 제30권2호
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• pp.54-57
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• 2018

Purpose: Most studies have reported pain in the head-neck and upper-limbs according to smartphone usage, which is related to the proprioception sense in the head and neck, but there have been few studies. Therefore, the aim of this study was identify the adverse effects of the proprioceptive sense in the head-neck according to smartphone usage. Methods: Twenty-seven young adults (male: 9, female: 18) were enrolled in this study. The proprioceptive sense was measured through the joint reposition sense error and neural positon error in the head-neck during smartphone usage for 0, 5, and 20 minutes. The Noraxon MyoMotion system was used to record the joint position angle and neutral positon in the head-neck. One-way repeated ANOVA was used to identify the differences between the three smartphone use durations and the least-squares difference was used as a post hoc test. The data were analyzed using SPSS 18.0 software. Results: The joint reposition sense error and neural positon error in the head-neck were significantly different among the 0, 5, and 20 minutes of smartphone usage (p<0.05). In the post hoc test, the joint reposition sense error and neural positon error showed a significant difference between smartphone use for 0 minute and 5 minute, and between smartphone use for 0 minute and 20 minutes. Conclusion: This study suggests that smartphone use within 5 minutes can have adverse effects on the proprioceptive sense. Therefore, it is necessary to consider the appropriate use time and break time when using smart phones.

• 디지털융복합연구
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• 제14권3호
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• pp.483-488
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• 2016

본 연구에서는 스마트폰 사용자의 태도를 중심으로, 스마트폰 사용, 정신 건강 및 신체건강 간의 관계를 알아보고, 스마트폰 사용감소 의도와의 관계도 부수적으로 알아보고자 하였다. 이를 위해, 관련된 변인들로 구성된 질문지를 대학생들에게 실시하였다. 수집된 129명의 자료를 분석한 결과, 스마트폰 중독점수와 시각, 청각, 두통, 소화 관련 증상들, 우울 및 불안과 각각 정적 상관이 유의하였고, 스마트폰 사용감소의도는 시각, 두통, 소화 증상과 각각 정적 상관이 유의하였다. 시각, 두통, 소화 관련 증상을 느낄수록 스마트폰 사용을 줄일 의도가 있는 것으로 나타났다. 스마트폰 사용자들은 스마트폰의 이점은 최대화하되, 그 부작용은 최소화하는 적응적 사용을 위해 스마트폰 사용과 건강 간의 관계에 대한 이해를 높여야 할 것이다. 끝으로 본 연구의 시사점 및 제한점이 논의되었다.

• 한국학교보건학회지
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• 제31권3호
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• pp.135-145
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• 2018

Purpose: The study aimed to investigate the factors associated with long hours of smartphone usage and to identify the characteristics of the high-risk group among female middle school students in South Korea. Methods: The study analyzed the data of 13,648 female middle school students using their own smartphone extracted from the 13th Youth Health Behavior Online Survey (2017). The factors related to using smartphones for a long time was analyzed by binomial logistic regression. The characteristics of the high-risk group was defined by a decision tree analysis. Results: The average hours spent on smartphone usage was 269.54 minutes per day. The significant factors associated with the long hours of smartphone usage were grade, living with parents, perceived household economic status, perceived academic achievement, stress, sadness and hopelessness, the main purpose of smartphone usage, drinking, body mass index, breakfast, and satisfaction with sleep quality. The subjects showing low academic performance and having breakfast four times a week or less were more likely to use their smartphone for a long time. Conclusion: Based on the results of the research, we need to establish intervention strategies focusing on the factors influencing long-time usage of smartphone. Particularly, the subjects who show poor academic performance and skip breakfast frequently should be considered as the high-risk group for spending long hours on smartphone usage.

• 한국임상보건과학회지
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• 제7권2호
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• pp.1308-1317
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• 2019

Purpose: The purposes of this study are to investigate the actual uses of a smartphone and tendencies for smartphone addiction among dental hygiene students, examine the effects of life stress, self-esteem, communication ability and interpersonal relationship ability considered to have correlations with addiction, and is provided basic data to solve the problems. Methods: The investigator analyzed data collected from 332 students in the Dental Hygiene Department at J University in Gyeongnam Province with SPSS 18.0. Results: The students scored mean 2.34±0.40 points on the four-point scale of smartphone addiction tendencies, 1.70±0.43 on the life stress scale, 2.99±0.32 on the interpersonal relationship ability scale, 2.80±0.42 on the self-esteem scale, and 2.83±0.39 on the Communication ability scale. There were differences in their smartphone addiction tendencies according to such general characteristics as the grade(p<.05), perceptions of a smartphone(p<.001), and hours of using a smartphone(p<.001). They had differences in life stress according to the grade(p<.01). Their smartphone addiction tendencies increased according to higher percentage of a smartphone(β=.360, p<.001), longer hours of using a smartphone(β=.225, p<.001), and greater life stress(β=.297, p<.001). The higher their smartphone addiction tendencies were, the lower their self-esteem was(β=.-210, p<.001). Conclusions: The study provides data needed for dental hygiene students to recognize the problems of smartphone addiction, find improvement measures, and make effective use of a smartphone.