• International Journal of Internet, Broadcasting and Communication
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• 제15권4호
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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.

• 대한방사선기술학회지:방사선기술과학
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• 제41권4호
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• pp.345-349
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• 2018

The study analyzed questionnaires of 431 radiologists in the field of radiology for identifying the effects of smartphone addiction on self-control for college students using smartphones. The results showed that the standard of living for smartphone addiction was higher for middle-income brackets, and that for girls, it was high for gender. Male students showed high self-control among men and women, while those who are not addicted to smartphones showed high levels of self-control among non-addicted people. In addition, the results of correlation are gender and smartphone addiction (r=.221, p<.001) showed a static correlation between smartphone and self-control (r=-.371, p<.001) It has been found that there is a negative correlation. Based on the results of this study, it is expected that university students will be able to improve their program development and self-control ability to prevent smartphone addiction and will be used as basic data for prevention education.

• 융합보안논문지
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• 제15권3_1호
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• pp.63-74
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• 2015

본 연구의 목적은 군사학과 학생을 대상으로 스마트폰 사용실태를 파악하고, 자기통제력과 스트레스 대처방식이 스마트폰 중독 수준에 영향을 미치는가를 알아보았다. 결과는 대학생의 스마트폰 사용기간이 1일 기준 사용시간이 1시간 이상자가 95.3%로 스마트폰이 개인 일상생활에 중요하게 영향을 미치는 것으로 분석되었으며, 성별에 따른 스마트폰 중독 수준의 차이도 있었다. 스마트폰 중독 수준은 여학생이 남학생 보다 더 높은 것으로 나타났으며, 자기통제력과 스마트폰 중독 간의 상관관계를 분석한 결과 자기통제력이 높을수록 스마트폰 중독은 낮아지는 것으로 분석되었다. 또한 스트레스 대처방식과 스마트폰 중독 간에도 유의미한 결과로 나왔다. 결론적으로 스마트폰 사용기간과 사용시간에 대하여 자기통제력이 필요하며 스트레스 대처방식이 문제 지향적 대처방식이 요구된다는 것을 실증 하였다. 이러한 연구결과를 토대로 연구의 함의를 논의 하였으며, 추후 연구과제와 한계를 논의하였다.

• 디지털산업정보학회논문지
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• 제8권1호
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• pp.9-15
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• 2012

Multiple convenience features have been getting installed in recently released cars. However, the control of them has many uncomfortable matters yet. To resolve them, it is needed to study how to use easier the convenience features and control them remotely. Currently, wide range of convergence services are being released in various industries by using smartphone and smartphones with its state-of-the-art functions also are being released. In this paper, we design and implement smartphone-based applications for controling the vehicle's convenience features to control the vehicle convenience features with smartphone. To do this, we configure CAN (Controller Area Network) communication between the vehicle's various convenience features, and establish MCU (Micro Controller Unit) to control each feature. We also connect between the MCU and smartphones to make them available for the remote control. We can control lights, turn signals, audio, windows, air conditioner, and so on with the implemented smartphone-based control service of vehicle's convenience features using CAN remotely.

• International Journal of Contents
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• 제11권3호
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• pp.1-6
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• 2015

This study presents an examination of the effects of the sub-factors of both self-control and school adjustment on smartphone addiction among a sample of elementary school students. The study is comprised of 93 5^th-grade students from x elementary school located in Seoul, Korea. A descriptive analysis, Pearson's correlation, and multiple regression analysis were performed, and the following two study results are presented: 1) Among the sub-factors of self-control, instant gratification positively predicts smartphone addiction. 2) Among the sub-factors of school adjustment, a student's adherence to school rules negatively predicts smartphone addiction. Based on these results, the implications for preventing smartphone addiction among elementary-school students are discussed.

• 대한임베디드공학회논문지
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• 제9권5호
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• pp.277-283
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• 2014

In this paper, we propose a control system for synchronizing attitude between an Android smartphone and a mobile robot. The control system is comprised of a smartphone and a mobile robot. The smartphone transports its attitude to the mobile robot and receives the attitude of mobile robot through bluetooth communication. Further, the smartphone displays the mobile robot on the screen by using embedded camera, which can be used as a pseudo augmented reality. Comparing the received attitude data from smartphone, the mobile robot measures its attitude by an AHRS(attitude heading reference system) and controls its attitude. Experiments show that the synchronization performance of the proposed system is maintained in the error range of $1^{\circ}$.

• 성인간호학회지
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• 제27권6호
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• pp.634-643
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• 2015

Purpose: The purpose of the study was to investigate the factors affecting on smartphone addiction according to the classification of addiction-risk groups among college students, focusing on self-control. Methods: A sample of 242 college students at K University in Seoul was recruited to participate in the study. A structured questionnaire composed of items for the self-rated smartphone addiction scale and self-control scale was used to collect data. Results: The number of students in smartphone addiction-risk group was 66 (27.3%). This study had 17.5% of the explanatory power, including perceived smartphone necessity (${\beta}=.330$, p=.007), and instant self-control (${\beta}=-.281$, p=.028) in addiction-risk group. Whereas, in non-risk group, the affecting factors included gender (${\beta}=.194$, p=.004), self-awareness of addiction (${\beta}=-.290$, p<.001), and instant self-control (${\beta}=-.281$, p<.001) with 31.3% of the explanatory power. Conclusion: There is a need to develop an intervention program to prevent the addiction of smartphones and to improve self-control among college students.

• 한국전문물리치료학회지
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• 제21권3호
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• pp.28-37
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• 2014

The purpose of this study was to investigate the effects of smartphone use on muscle fatigue and tenderness in the cervical erector spinae (CES) and the upper trapezius (UT) and on the cervical range of motion among subjects with and without neck muscle pain. The subjects were 30 smartphone users in their 20 s who -were assigned to either an experimental group with neck muscle pain or a control group without neck muscle pain. Muscle fatigue and tenderness in the CES and the UT as well as the subjects' cervical range of motion were measured before and after 20-min smartphone sessions in a sitting position. In a between-group comparison of muscle fatigue, the experimental group showed a significantly greater decrease in median frequency in the CES and the right UT after smartphone use (p<.05). Regarding the assessment of muscle tenderness after smartphone use, the experimental group showed a statistically significant decrease in the pressure-pain threshold (PPT) in all muscles (p<.05), whereas the control group showed a significantly decreased PPT in the right CES and the UT (p<.05). The assessment of the cervical range of motion revealed a statistically significant reduction in the cervical flexion-extension and left lateral flexion in the experimental group (p<.05) after smartphone use. However, there was no significant change in the cervical range of motion in the control group (p>.05) after smartphone use. When compared with the control group, the experimental group demonstrated greater changes in cervical extension, lateral flexion, and rotation, except for cervical flexion (p<.05). In conclusion, when smartphone users have pre-existing neck muscle pain, the use of a smartphone further increased muscle fatigue and tenderness in the neck and reduced PPT and the cervical range of motion.

• 대한통합의학회지
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• 제9권2호
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• pp.183-192
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• 2021

Purpose : To investigate the degree of smartphone addiction among health-related college students, and to compare and analyze the effect of the degree of addiction on attention control and interpersonal support. Methods : 184 people who voluntarily participated and agreed to fill out the questionnaire were randomly sampled. The smartphone self-diagnosis scale was used to measure the degree of smartphone addiction, and the Attentional Control Questionnaire (ACQ) was used as a tool to measure the degree of attention control. In addition, the Interpersonal Support Evaluation List (ISEL) was used to measure the degree of interpersonal support. Results : In comparison of the degree of smartphone addiction according to the general characteristics of the subjects, there was no significant difference according to religion, major, and grade, but there was a significant difference in gender and daily use time of smartphones (p <.05). There was a significant difference in the degree of attention control according to the level of smartphone addiction (high risk, potential risk, general user group) (p <.05), but there was no significant difference in the degree of interpersonal support. Conclusion : The degree of smartphone addiction was relatively higher for women than for men, and users who used it for a long time per day were more addicted. It also showed that attention control was further reduced in highly addictive users.

• 디지털융복합연구
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• 제17권11호
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• pp.395-407
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• 2019

본 연구는 대학생의 스트레스, 자기효능감, 자기통제력이 스마트폰 중독에 미치는 영향에 대한 구조모형을 검증하고자 시도되었다. 연구대상은 G시와 P시에 재학중인 대학생 440명으로 자가설문지를 이용하여 자료를 수집하였다. 연구결과 첫째, 스마트폰 중독에 가장 큰 영향을 미치는 변수는 자기통제력으로 나타났고 그 다음 스트레스 순이었으며, 두 변인의 스마트폰 중독에 대한 설명력은 34% 였다. 둘째, 자기통제력에 자기효능감은 정적 영향을 미쳤고 스트레스는 부적 영향을 미쳤으며, 두 변인 모두 자기통제력을 통한 스마트폰 중독에 간접효과가 있는 것으로 나타났다. 스마트폰 4시간미만 사용집단과 4시간이상 사용집단 간의 조절효과에서 스트레스와 스마트폰 중독의 경로계수와 자기효능감과 스마트폰 중독의 경로계수에서 집단간 차이가 있어 부분조절효과가 있었다. 따라서 스마트폰 중독을 감소시키기 위해서는 스트레스를 줄이고 자기통제력과 자기효능감을 높일 수 있는 방안모색이 중요하며, 특히 개인별 상황에 맞는 다양한 프로그램 개발 및 맞춤식 교육중재방안이 필요할 것으로 사료된다.