• 아태비즈니스연구
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• 제13권3호
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• pp.293-309
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• 2022

Purpose - The purpose of this study is to explore the possibility of predicting the degree of smartphone overdependence based on mobile phone usage patterns. Design/methodology/approach - In this study, a survey conducted by Korea Internet and Security Agency(KISA) called "problematic smartphone use survey" was analyzed. The survey consists of 180 questions, and data were collected from 29,712 participants. Based on the data on the smartphone usage pattern obtained through the questionnaire, the smartphone addiction level was predicted using machine learning techniques. k-NN, gradient boosting, XGBoost, CatBoost, AdaBoost and random forest algorithms were employed. Findings - First, while various factors together influence the smartphone overdependence level, the results show that all machine learning techniques perform well to predict the smartphone overdependence level. Especially, we focus on the features which can be obtained from the smartphone log data (without psychological factors). It means that our results can be a basis for diagnostic programs to detect problematic smartphone use. Second, the results show that information on users' age, marriage and smartphone usage patterns can be used as predictors to determine whether users are addicted to smartphones. Other demographic characteristics such as sex or region did not appear to significantly affect smartphone overdependence levels. Research implications or Originality - While there are some studies that predict smartphone overdependence level using machine learning techniques, but the studies only present algorithm performance based on survey data. In this study, based on the information gain measure, questions that have more influence on the smartphone overdependence level are presented, and the performance of algorithms according to the questions is compared. Through the results of this study, it is shown that smartphone overdependence level can be predicted with less information if questions about smartphone use are given appropriately.

• 수산해양교육연구
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• 제27권2호
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• pp.576-588
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• 2015

This study analyzed the influences of elementary students' usage of smartphone, computer and TV on academic attitude. Of the subjects residing in the U city to target of 10 elementary schools from the fourth grade to sixth grade, 865 students were sampled. This research made a frequency analysis and reliability analysis of the obtained date using SPSS 21.0 program were used. Research results are as follows. First, in the smartphone, computer and TV usage status of elementary school, smartphone, computer and TV were used the high frequency with which almost every commonly used, was found to be necessary to take advantage of the time to less than one hour a day, mostly alone, it has been found that a lot of online games, videos and SNS. Second, the use of smartphone, computer and TV were showed a significant effect on all sub-variables of open, self-concept, initiative, responsibility, learning enthusiasm, future orientation, creativity, self-assessment.

• Healthcare Informatics Research
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• 제24권4호
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• pp.283-291
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• 2018

Objectives: To identify the current status of smartphone usage and to describe the needs for smartphone-based cardiac telerehabilitation of cardiac patients. Methods: In 2016, a questionnaire survey was conducted in a supervised ambulatory cardiac rehabilitation (CR) program in a university affiliated hospital with the participation of heart failure or heart transplantation patients who were smartphone users. The questionnaire included questions regarding smartphone usage, demands for smartphone-based disease education, and home health monitoring systems. Results were described and analyzed according to principal diagnosis. Results: Ninety-six patients (66% male; mean age, $5{\pm}11$ years), including 56 heart failure and 40 heart transplantation patients, completed the survey (completion rate, 95%). The median daily smartphone usage time was 120 minutes (interquartile range, 60-300), and the most frequently used smartphone function was text messaging (61.5%). Of the patients, 26% stated that they searched for health-related information using their smartphones more than 1 time per week. The major source of health-related information was Internet browsing (50.0%), and the least sought source was the hospital's website (3.1%). Patients with heart failure expressed significantly higher needs for disease education on treatment plan, home health monitoring of blood pressure, and body weight (${\chi}^2=5.79$, 6.27, 4.50, p < 0.05). Heart transplantation patients expressed a significant need for home health monitoring of body temperature (${\chi}^2=5.25$, p < 0.05). Conclusions: Heart failure and heart transplantation patients show high usage of and interest in mobile health technology. A smartphone-based cardiac telerehabilitation program should be developed based on high demand areas and modified to suit to each principal diagnosis.

• 중소기업융합학회논문지
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• 제4권4호
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• pp.13-18
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• 2014

스마트폰 개발의 발전으로 인하여 사용자의 스마트폰 사용율이 PC 사용율보다 점점 높아지고 있는 실정이다. 스마트폰 사용이 대중화되면서 스마트폰 사용자의 개인신상정보, 금융 정보와 같은 중요한 프라이버시 정보들을 보호하는 연구는 현재 미미한 상태이다. 본 논문에서는 현재까지 연구되었던 스마트폰의 다양한 취약점에 대해서 분석하고 스마트폰 보안 공격 방법에 대한 대응방법 및 스마트포 소비자 분쟁 해결 기준들을 제시한다. 특히, 스마트폰에서 발생하기 쉬운 보안 위협(네트워크, 악성코드, 훔쳐보기 공격 등)을 통해 사용자의 개인정보 유출이나 금전적 손실과 같은 직접적인 피해를 최소화하기 위한 방법들을 분석한다.

• Journal of Korean Biological Nursing Science
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• 제21권3호
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• pp.231-238
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• 2019

Purpose: In 2015, South Korea had the highest global smartphone penetration (88%). However, smartphone addiction can seriously disrupt daily life and have a major negative impact on academic achievement. Methods: A structured questionnaire was completed by 250 nursing students for this descriptive study. Results: Students who were older, more satisfied with their major, exercised, and used their smartphone for less than 30 minutes before sleeping had higher learning engagement than those who were younger, less satisfied, did not exercise and used their smartphone for more than three hours. Quality of sleep and smartphone addiction were negatively correlated as was quality of sleep and daytime sleepiness. Interestingly, sleep pattern did not impact learning engagement directly. Conclusion: Smartphone usage influences learning engagement of nursing students rather than their sleeping patterns, which suggests a need to develop self-disciplining strategies for smartphone use to enhance learning engagement.

• 한국학교보건학회지
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• 제33권1호
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• pp.48-57
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• 2020

Purpose: The purpose of this study is to identify the relationship between perceived smartphone addiction and physical and mental health among female college students. Methods: Data were collected using a questionnaire to measure perceived smartphone addiction and physical and mental health of 314 female students attending a college located in D city from April 9 to May, 31, 2019. The collected data were analyzed using descriptive statistics, 𝑥² test, t-test and stepwise multiple regression with SPSS 18. Results: The respondents were classified into two groups, the perceived smartphone addiction group (29.3%) and the perceived smartphone non-addiction group (70.7%). Perceived smartphone addiction was significantly different according to daily smartphone usage time (p<.001), smartphone usage fee (p=.005), most satisfying thing about using smartphones (p=.006) and importance of smartphones in daily life (p<.001). The perceived smartphone addiction group had more physical health problems (p=.001) and more mental health problems (p<.001). The factors affecting physical health were perceived smartphone addiction and importance of smartphones in daily life, with 62% of explanatory power (F=10.15, p<.001). As for mental health, the affecting factors were also perceived smartphone addiction and importance of smartphones in daily life, with 87% of explanatory power (F=14.52, p<.001). Conclusion: It is important to raise awareness of smartphone addiction including its negative impact on physical and mental health, reduce smartphone usage time, and build offline social relationships.

• 한국융합학회논문지
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• 제12권5호
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• pp.51-60
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• 2021

본 연구는 초등학교 고학년 학생의 스마트폰 중독과 그 영향요인을 파악하기 위한 서술적 조사 연구이다. 연구대상은 C시에 소재하는 31개 지역아동센터의 초등학교 4, 5, 6학년 294명이었다. 자료수집은 2019년 5월 13일부터 2019년 6월 10일까지 이루어졌으며, 자료분석은 SPSS Win 23.0 프로그램을 이용하여 빈도분석, 𝑥²-test, 로지스틱회귀분석을 실시하였다. 연구결과는 중독위험군이 16%, 일반군이 84.0%로 나타났다. 스마트폰 중독에 영향을 미치는 요인으로는 평일 스마트폰 사용 시간(95% CI:1.263~827.849, p=.036), 스마트폰 주요 사용 시간대(95% CI:1.028~29.574, p=.046)로 나타났다. 따라서 초등학교 고학년 학생의 스마트폰 중독을 예방하기 위해서는 스마트폰 사용 시간 및 사용 시간대를 파악하여 예방교육이나 간호중재 프로그램을 개발할 필요가 있다.

• Asia pacific journal of information systems
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• 제31권1호
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• pp.43-75
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• 2021

Clearly, the smartphone is increasingly playing a greater role in everyday life, thus providing opportunities to evaluate how well the use of the smartphone meets the requirements of undergraduate students in independent learning outside of a classroom setting. This study used the task-technology fit (TTF) model to explore the effectiveness of smartphone usage to interact with learning materials in independent learning outside of classrooms, the need for smartphone support, and the fit of devices to tasks as well as performance. First, the study used interviews, observation, and survey data to identify what are the most important constructs of smartphones that stimulate students to interact with learning materials in independent learning outside of classrooms. Based on the findings from the exploratory study and Task Technology Fit theory, we postulated the Navigation design, Ergonomic design, Content support, and Capacity as the essential dimension of the smartphone construct. Then, we proposed a research model and empirically tested hypotheses with the structural model analysis. The results reveal a significant positive impact of task and technology on TTF for smartphone usage to interact with learning materials in independent learning outside of classrooms; it also confirmed the TTF and performance have a direct effect on actual use.

• 한국산학기술학회논문지
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• 제18권1호
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• pp.325-335
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• 2017

본 연구는 어머니의 스마트폰 사용습관이 유아의 공격성과 정서지능에 어떤 영향을 미치는지 알아보고자 하였다. 이를 위해, 전북 소재, 만 3~5세 유아가 스마트폰 사용 경험이 있는 어머니 총 275부의 설문 자료를 활용하였으며, 연구결과는 다음과 같다. 첫째, 어머니의 스마트폰 사용습관과 유아의 공격성 및 정서지능의 일반적 경향을 분석한 결과, 어머니의 스마트폰 사용습관의 일반적 경향은 전반적으로 낮은 비율을 보였으며, 하위요인별로는 '내성 및 몰입'이 가장 높은 수치를 나타내었다. 유아 공격성의 일반적 경향에서는 전반적으로 낮은 비율을 보였고, 하위요인별로는 '지위획득 공격성'이 높은 수치를 나타내었다. 유아 정서지능의 일반적 경향에서는 대체로 보통수준의 비율을 나타내었으며, 하위요인별로는 '어머니와의 관계'가 가장 높은 수치를 보였다. 둘째, 어머니의 스마트폰 사용습관과 유아의 공격성 및 정서지능과의 관계를 분석한 결과, 어머니의 스마트폰 사용습관과 유아 공격성은 정적상관관계가 있었으며, 유아 정서지능과는 상관관계가 나타나지 않았다. 그러나 스마트폰 사용습관 하위요인 중 가상세계지향과 정서지능 하위요인 중 자기정서 인식 및 표현은 부적상관관계를 보였다. 셋째, 어머니의 스마트폰 사용습관이 유아의 공격성에 미치는 영향을 분석한 결과, 어머니의 스마트폰 사용습관 및 하위요인 모두에서 유아의 공격성에 부정적인 영향을 미치는 것으로 나타났다. 넷째, 어머니의 스마트폰 사용습관이 유아의 정서지능에 미치는 영향을 분석한 결과, 어머니의 스마트폰 사용습관 및 하위요인 모두에서 유아의 정서지능에 영향을 미치지 않는 것으로 나타났다.

• 대한감각통합치료학회지
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• 제18권1호
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• pp.34-43
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• 2020

목적 : 스마트폰 중독 위험군 유아의 스마트폰 사용시간에 따른 스마트폰 중독 정도와 감각처리능력의 차이를 알아보고자 하였다. 연구방법 : 연구 대상자는 스마트폰 중독 위험군 유아 124명이었고, 연구 기간은 2019년 9월부터 동년 12월까지이었다. 연구 방법은 설문조사로 일반적 특성, 유·아동 스마트폰 중독 관찰자 척도, 단축감각프로파일을 사용하였다. 분석방법은 스마트폰 사용시간에 따른 스마트폰 중독의 차이와 중독군에 따른 감각처리능력의 차이를 비교하기 위해 독립표본 t-test를 사용 하였다. 결과 : 스마트폰 사용시간에 따른 집단 간 스마트폰 중독의 차이는 스마트폰 중독합계(p=.000)와 현저성(p=.027), 충동·강박적 사용(p=.019), 금단(p=.046), 내성(p=.003), 대인 간 갈등(p=.046)에서 유의한 차이를 보였다. 집단 간 감각처리능력의 차이는 SSP 총점(p=.000) 및 하위영역 모두에서 유의한 차이를 보였다(p=.000~.042). 결론 : 본 연구는 유아의 스마트폰 사용시간에 따른 스마트폰 중독과 감각처리능력의 차이가 있는 것을 확인하였다. 이를 통해 유아의 스마트폰 사용에 대한 교육의 필요성을 제기하였다는 점에서 의의를 갖는다.