• Human Ecology Research
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• 제59권3호
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• pp.387-400
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• 2021

This study examined the structural relationship between children's academic stress, grit, executive function difficulty, and media device addiction. Data on 1,132 children and their mothers from the 11^th (2018)Panel Study on Korean Children were used for the study. Data were collected by Academic Stress Scale, Grit Scale-Children, Child-Adolescent Self-reported Executive Function Difficulty Screening Questionnaire, and K-Internet Addiction Scale. Data were analyzed using SPSS 25.0 and AMOS 23.0 program with Pearson correlation, structural equation model and bootstrapping. The main results were as follows. 1) Children's academic stress had a negative influence on their grit. 2) Children's grit had a negative influence on their executive function difficulty and media device addiction. 3) Children's executive function difficulty had a positive influence on their media device addiction. 4) The relationship between children's academic stress and media device addiction was mediated by their grit and executive function difficulty. This study is significant in the sense that it found protective factors and risk factors for children's addiction to media devices. We suggest that children's grit be improved, and their academic stress and executive function difficulty be reduced to prevent and mediate children's media device addiction.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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• pp.1213-1215
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• 2007

The OTFT technologies have been mature almost up to the level of commercialization. In this paper we report the OTFT's applications to the backplane for active matrix electrophoretic, active matrix OLED and to integrated circuits. In addition we also introduce the recently developed technologies for reduction of OTFT's operating voltage.

• 대한기계학회:학술대회논문집
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• 대한기계학회 2001년도 춘계학술대회논문집C
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• pp.445-450
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• 2001

DVD(Digital Versatile Disk) is the data storage media devised to make high storage density and high data input/output possible. Therefore higher rotational speed and better accuracy in optical pick-up are required compared with the existing optical storage device. These operational functional requirements are concerned with abilities of optical storage device. Especially, High rotational speed is deeply concerned with the noise and vibration of optical storage device, is important problem in development of optical storage device so much. This paper propose a new concept ROM media of optical storage device named as Cylindrical ROM media, and evaluate this by means of Axiomatic approach and empirical data.

• 대한임베디드공학회논문지
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• 제7권1호
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• pp.9-15
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• 2012

Recently, as the development of 3D contents service, production of 4D media that user can feel physical effects by the scene of movie has been increased. This 4D media uses the SMMD (Single Media Multiple Devices) method to give users enhanced effects with multiple devices playing rather than the SMSD (Single Media Single Device) method with single device playing in a smart TV environment. To give more sensible effects to users, from the beginning of making one media, we produced 4D media that consists of 3D contents and the SEM (Sensory Effect Metadata) to define effects of the scene. 4D media is transmitted to a HS (Home Server) to represent 3D contents in 3DTV and multiple devices with synchronized way. In this paper, we suggested the concept and overall 4D media broadcasting service system architecture, aggregator time acquisition, media time scheduling, real-sense device scheduling, evaluation results, user interfaces and implemented devices.

• 한국정보통신설비학회:학술대회논문집
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• 한국정보통신설비학회 2007년도 학술대회
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• pp.173-175
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• 2007

So far, almost all IP media services are targeted to the specific devices, for example, IPTV services are mainly for TV, and social community services are mainly for PC etc.. This paper describes newly developed media service platform in which the high quality video services can be provided not only to the TV or PC but also to the PMP(Portable Media Player) and even to the mobile phone. The major technical issues of the service platform are synchronization of contents among the different devices and high quality TV grade video display in PMP device. We confirmed successful operation of multi-device converged services in the developed media platform. We also have a trial service plan in Gwangju city at the end of this year.

• 대한간호학회지
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• 제52권4호
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• pp.421-434
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• 2022

Purpose: This study aimed to examine the effect of parental self-esteem on late school-aged children's media device addiction by mediating marital conflict and children's self-esteem. Methods: This study used data from the 11th (2018) Panel Study on Korean Children. The participants consisted of 1,082 family triads (fathers, mothers, and children). Data were collected using the Rosenberg Self-Esteem Scale, Marital Conflict Scale, and K-Internet Addiction Scale. The data were analyzed using structural equation modeling with SPSS/WIN 27.0 and Mplus 8.7. Results: The final model showed a good fit for the data. Children's media device addiction was directly related to mothers' self-esteem, mothers' marital conflict, and children's self-esteem. Fathers' self-esteem had a significant indirect effect on children's media device addiction by mediating both fathers' and mothers' marital conflict. In addition, mothers' self-esteem had a significant indirect effect on children's media device addiction by mediating mothers' marital conflict. Conclusion: The findings indicates that self-esteem and marital conflict for both fathers and mothers have a significant effect on children's media device addiction. It suggests that more attention might be given to fathers and mothers in developing interventions to prevent children's media device addiction.

• 한국보육지원학회지
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• 제18권5호
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• pp.79-99
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• 2022

Objective: This study was conducted to examine the significant factors affecting media device addiction using the data mining technique for large-scale data from the Panel Study on Korean Children Survey (PSKC). The PSKC data of this study were gathered from the elementary school students in their 10th survey (1,286 3rd grade students). Methods: The SPSS 21.0 program was used for data mining decision tree analysis, and the results are as follows. Results: First, the most important predictor of media device addiction was planning-organization which was among the sub-factors of executive function. Second, as a result of the decision tree analysis, the children with the highest probability of addiction to media devices were ones that had difficulties in planning and organizing, had mothers with a permissive parenting attitude felt difficulties in controlling behavior, and were alone at home for more than two hours a day without any adult supervision. Conclusion/Implications: The results of this study can help guide the direction of future research related to children's addiction to media devices by exploring and analyzing factors that significantly affect children's addiction to media devices.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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• pp.1789-1791
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• 2007

We fabricated OTFT-OLED display panel by using Ag-paste for source and drains electrode of OTFTs. The OTFTs were fabricated by solution processes such as spin-coating for PVP gate dielectric and screen printing for S/D electrodes with Ag-paste, except pentacene active layer which was deposited by evaporation. The mobility was 0.024 cm2/V.sec , off state current ${\sim}10-11A$, threshold voltage 7.6 V and on/off current ratio ${\sim}105$. The panel consisted of 16 x 16 pixels and each pixel consisted of 2 OTFTs, 1 Capacitor and 1 OLED. The pixels successfully worked in terms of current magnitude supplied to OLED and the control ability of driving and switching OTFTs.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2009년도 9th International Meeting on Information Display
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• pp.428-430
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• 2009

We fabricated flexible OTFT-backplanes with combining printing technique and conventional photolithography process for the electrophoretic display(EPD). The active area size of backplane was 6" in diagonal direction and consisted of $192{\times}150$ pixels, containing 1 OTFT employed bottom contact structure and 1 capacitance in each pixel.

• 방송공학회논문지
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• 제17권1호
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• pp.37-48
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• 2012

최근 홈 네트워크 시장에서는 가전 업체를 중심으로 DLNA(Digital Living Network Alliance) 기술 기반 홈 미디어 네트워크 서비스가 활발히 제공되기 시작하고 있다. 현재 DLNA 미디어 기기와 함께 일반적으로 제공되는 DLNA 네트워킹 소프트웨어는 서버 기능, 렌더러 기능 및 디바이스 제어 기능 모두를 포함한 통합 소프트웨어의 성격이 강하다. 그러나 홈 미디어 네트워크 환경에서는 하나의 기기가 여러 기능을 동시에 내장할 필요가 없고 자주 사용하는 기능이 정해져 있는 경우가 많다. 스마트TV의 재생 기능, NAS(Network Attached Storage)의 미디어 저장 기능과 같이 각각의 기기가 특정 역할을 수행하는 홈 미디어 네트워크 환경에서 DLNA 통합 소프트웨어 활용은 오히려 네트워킹 및 프로세싱 측면에서 낭비를 유발한다. 본 논문에서는 현재의 통합 기능 DLNA 네트워킹 소프트웨어를 분석하고, DLNA 디바이스 클래스를 근거로 홈 미디어 기기의 자원을 효율적으로 이용하는 기기 별 DLNA 소프트웨어 모델을 제시한다. 또한 제시한 DLNA 소프트웨어 모델 중 스마트TV 및 스마트폰 용 DLNA 소프트웨어를 구현해 일반적인 DLNA 네트워킹 소프트웨어와의 자원 효율성을 비교한다.