• Proceedings of the KHMA Conference
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• 2013.05a
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• pp.343-343
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• 2013

• Journal of the Korea Convergence Society
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• v.9 no.1
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• pp.213-221
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• 2018

The purpose of this study was to verify the impact of maltreatment by parents on adolescents' depression, furthermore, confirm the mediating effects of social withdrawal and cell phone dependency in South Korea. The data were analyzed with frequency, correlation and structural equation modeling(SEM) by SPSS 18.0 and AMOS 20.0. Data was employed from the wave 5 in 2014 of Korean Children and Youth Panel Study (KCYPS), and analyzed data of 1,969 fourth grade elementary school students. The result showed: First, maltreatment experience from parents has a statistically significant positive effect on adolescent's depression. Second, maltreatment experience from parents has positive effects on both social withdrawal and mobile phone dependency. Third, both social withdrawal and mobile phone dependency have positive effects on adolescent's depression. Fourth, both social withdrawal and mobile phone dependency have significant mediating roles in the relationship between maltreatment experience from parents and adolescent's depression.

• The Optical Journal
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• s.103
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• pp.54-56
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• 2006

휴대폰 부품 및 정밀광학측정장비 제조전문기업으로 이름이 잘 알려진 (주)지엔오(대표 · 배순구)는 최근 2메가급의 카메라폰이 등장하고 있는 시점에 맞추어 기존에 작업자의 육안검사에 의존하던 카메라모듈의 초점검사공정을 자동화한 자동포커스 렌즈시스템 개발을 완료하면서 시장의 주목을 받고 있다. 또한 소형카메라에 장착되는 광학시스템 및 렌즈의 성능평가방법의 표준화사업에도 참여하여 초소형 카메라모듈의 제조, 생산업체로서의 위치도 확고히 하고 있다.

• Journal of the Korea Society of Computer and Information
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• v.25 no.8
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• pp.173-179
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• 2020

The purpose of this study was to examine the effects of peer attachment and parental abuse on adolescents' dependence on mobile phones and the mediating effect of self-esteem. For this study, I used the panel data of the 7th year of the 1st grade of the elementary school for the Korean Children and Youth Panel Survey provided by the Korea Youth Policy Institute. A total of 1,937 adolescents were selected to analyze causal relationship among variables, and SPSS 26.0 and AMOS 26.0 were used to verify research problem. As a result of the study, First, the better the relationship with peers, the higher the self-esteem and the less the dependence on their mobile phone. On the other hand, the more severe the abuse, the lower the self-esteem and the higher the dependence on mobile phones. Second, Self-esteem was found to have a significant effect on peer attachment and abuse on mobile phone dependence. Based on these results, I would like to provide them as basic data for helping positive development of adolescents.

• Journal of the Korea Society of Computer and Information
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• v.24 no.11
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• pp.255-262
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• 2019

The purpose of this study to the factors affecting the satisfaction of adolescent life. This study analyzed data from the panel data of the Korean Children and Youth Panel Survey (KCYS). Based on this, it aims to propose practical and policy measures for the correct use of mobile phones and fandom activities to increase the satisfaction of young people's lives. The AMOS 24.0 was used as an analytical method of this study. First, the higher the life satisfaction of adolescents, the lower the dependence on mobile phones. Second, the mobile phone dependence of adolescents has a significant effect on life satisfaction by Self-resilience. In conclusion, it is suggested that customized programs suitable for social emotional development and rapidly changing cultural activities should be developed and distributed in order to improve the life satisfaction of adolescent.

• The Optical Journal
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• s.102
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• pp.65-69
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• 2006

VGA급에서 1.3메가, 그리고 2메가급의 휴대폰용 카메라제품이 속속 등장함에 따라 작업자의 육안검사에 의존하던 카메라모듈의 초점검사공정에서 다양한 Vision 및 소프트웨어를 이용한 자동화 설비의 개발 수요가 급증하고 있다. 당사에서는 이미 약 2년 전부터 이와 같은 시장의 추세를 예측하여 별도 변환렌즈를 통한 자동포커스 조절 시스템의 구현을 통해 메가급 이상의 다양한 휴대폰용 카메라모듈의 변화에도 유연성 있게 대처할 수 있는 Autofocusing System을 자체 개발한바 있다. 따라서 본 고에서는 이 시스템 구현을 통해 실제 양산에 적용 가능한 제품을 소개하고자 한다.

• Annual Conference of KIPS
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• 2013.11a
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• pp.556-557
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• 2013

최근 스마트폰의 보급으로 인해 디지털 기기에 지나치게 의존한 나머지 기억력과 계산 능력이 크게 떨어지는 디지털 치매가 사회적 이슈로 떠오르고 있다. 휴대폰은 점점 발전하여 스마트해지지만 사용자는 그와 반대로 디지털 치매 환자가 되어가는 것이 현실이다. 본 논문에서는 계산 능력을 향상시켜 디지털 치매를 예방하기 위해 간단한 사칙연산을 이용한 기능성 게임을 제시하려 한다. 기존 브레인게임에 없던 무작위 방식으로 남녀노소 모두 시간과 장소의 구애를 받지 않고 즐길 수 있어 디지털 치매 예방에 도움이 될 것으로 기대된다.

• Journal of Digital Convergence
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• v.15 no.1
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• pp.1-9
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• 2017

The purpose of this study is to investigate the differences of the mobile phone overuse by gender and school levels. For this study, 565 middle and high school students in Gyeonggi province answered the self-report survey, 253 students were extracted as an overuse group, and the data were analyzed by one-way MANOVA. The results showed that 'daily disturbance' was a common major factor in gender and school level difference and 'school life disturbance', 'with draw' and 'tolerance' were added in school level difference. Based on the results, this study suggested users' characteristics such as gender and school level should be taken into prevention and treatment of mobile phone overuse.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.460-464
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• 2008

To improve and optimize user interfaces of the system, the accurate understanding of users' behavior is an essential prerequisite. Direct questions depend on user' s ambiguous memory and usability tests depend on the researchers' intention instead of users'. Furthermore, they do not provide with natural context of use. In this paper we described the work which examined users' behavior through log analysis in their own environment. 50 users were recruited by consumer segmentation and they were downloaded logging-software in their mobile phone. After two weeks, logged data were gathered and analyzed. The complementary methods such as a user diary and an interview were conducted. The result of the analysis showed the frequency of menu and key access, used time, data storage and several usage patterns. Also, it was found that users could be segmented into new groups by their usage patterns. The improvement of the mobile phone user interface was proposed based on the result of this study.

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 2002.12a
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• pp.410-413
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• 2002

일반적으로 휴대폰에는 리튬이온(Ll-lon) 전지(battery)를 많이 사용하고 있으며 그 전지(battery)를 충전시키기 위해 Microcontroller를 사용해서 과충전과 방전, 그리고 전지(battery) 보호와 충전에 대한 일정한 전류를 제어한다. 여기에서 충전 동작 시 필요한 일반직인 충전 전류 제어를 PWM의 방식에 의존하지 않고 인공지능 기법을 이용해 소프트웨어적으로 처리가 필요한 파라메터 값을 추정해 적용시키고자 한다. 따라서 개발한 충전시스템에 일반적인 충전 파라메터를 전압과 전류 그리고 시간으로 분류하여 Microcontroller에 그 파라메터를 적용시켜 PWM 방식으로 제어한 후에 실험에 의한 결과값을 얻는다. 그리고 이것들을 비교하여 보다 나은 충전시스템을 구현하기 위해 인공지능 기법 중에 하나인 신경망을 이용하여 전압과 전류 그리고 시간에 대한 파라메터를 처리하였다. 본 논문에서 신경망에 대한 파라메터의 학습을 일반 FC에서 구현하고 여기에서 추출된 학습 값을 Microcontroller에 적용시켜 입력값에 따라 다양한 PWM 신호를 발생시키도록 구현했다. 이후 실제적인 실험에 의한 결과값을 본 논문에서 서술하였다.