• The Journal of the Convergence on Culture Technology
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• v.8 no.3
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• pp.129-136
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• 2022

This study examines the moderating effect of sociodemographic factors on the relationship between motivation and outcomes of digital device use. The data from 'the 2020 Survey on the Digital Divide' conducted by National Information Society Agency was used for empirical analysis. Significant interaction effects were observed between sociodemographic characteristics and motivation. The results also show that motivation was a primary predictor of the differences in outcomes of digital device use, the third-level digital divide. These findings have implications for closing the third-level digital divide.

• Informatization Policy
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• v.27 no.3
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• pp.39-55
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• 2020

This study was designed to analyze the relationship among the motivations for the use of digital devices, attitudes toward the use of digital devices and performance resulting from the use of digital devices in middle-aged and elderly groups by using a path analysis. For an empirical analysis, the 2018 Survey on the Digital Divide by the National Information Society Agency was referenced, analyzing the data of 1,664 people, selected through listwise deletion from total 2,303 people aged 55 or over. A close examination of how measuring variables reflect potential variables (motivations for, attitudes toward and performance resulting from the use of digital devices) showed a significance of 0.001, which suggests that each individual measuring variable does reflect the potential variables. Evaluation of the pathway factors of the structural model from the motivations for the use of digital devices to the attitudes toward the use of digital devices (β=0.847) and from the attitudes toward the use of digital devices to the performance resulting from the use of digital devices (β= 0.745) revealed significant statistical effects. The results of this study suggest that the motivations for the use of digital devices does not directly enhance the digital device use performance, but that it can improve the attitudes toward the use of digital devices, which can in turn increase the performance resulting from the use of digital devices. The analysis holds significance that it has presented practical and policy implications.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2016.10a
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• pp.927-928
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• 2016

In the past, the way of sharing data in various devices was to use a physical method such as USBs. The radical development of communications technology and the users, who possess various multimedia devices, caused the need for the new way that people could share their data in various devices, and providing various digital resources by using the cloud computing service helps people solve the limit to sharing the resources in their PC. Therefore, this paper is to suggest the technology for synchronization of mobile devices, and the user-centered cloud service is applied to the technology. Having conducted the experiment, it has been discovered that applying the synchronization of mobile devices using the cloud service enabled to conduct the auto file synchronization and to minimize the bandwidth consumed during the synchronization process between two devices.

• Informatization Policy
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• v.27 no.1
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• pp.36-54
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• 2020

This study empirically analyzes the impact of digital divide between digital device usage motivation and operational skills on online political participation. The analysis was performed using the National Information Society Agency's 2018 digital divide survey data from September to December 2018 and applying the Heckman selection model to control the sample selection bias that may occur between internet users and non-users. The result shows the gap in motivation and device operational skills of individual citizens using digital devices has significant impact on online political participation. In socio-economic terms, it shows the age, education level and regional factors also have significant impact on online political participation, while gender and income levels do not. This study holds significance in that there are different patterns of digital divide between digital devices, identifying the motivation to use a digital device as an important factor for mobile device users, and the device operational skills, for personal computer users.

• Journal of Digital Contents Society
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• v.12 no.3
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• pp.383-390
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• 2011

The purpose of this study was to examine major motivations for using SNSs and the effect of them on SNS participation. In order to address the research questions, 253 undergraduate and graduate students participated. Results of the study were summarized as follows. First, Cyworld was mainly used followed by Facebook and Twitter. Most of the respondents had access to SNSs via smart devices. The average frequency of SNS use was 1-3 times a day and they used them less than 30 minutes a time. The reasons why they started to use SNSs were mainly to follow current trends, maintain friendship, and accept acquaintances recommendations. Second, the result of component analysis derived four primarily underlying dimensions related to SNS use; self-satisfaction, social interaction, recreation, and information seeking. Third, both self-satisfaction and social interaction motivation had significant correlation with SNS participation. The results of multiple regression analysis showed that self motivation was more influential on active participation than social interaction and information seeking motivation.

• 한국HCI학회:학술대회논문집
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• 2006.02b
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• pp.424-434
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• 2006

최근 다양한 디지털 컨텐츠를 온라인의 서버와 오프라인의 개인 컴퓨터 혹은 소형 정보기기에서 공유하여 사용이 가능하도록 도와주는 시스템과 서비스들이 출현하고 있다. 이와 같은 시스템은 사용자가 언제, 어느 곳에 있더라도 원하는 디지털 컨텐츠에 접근할 수 있도록 도와준다는 장점을 갖고 있으며, 또한 해당 디지털 컨텐츠의 저작권을 보호할 수 있다는 부가적인 이점을 제공한다. 그러나 이들 시스템은 도입 초기에 대부분의 개발자들이 저지르기 쉬운 기능 중심적 사고에 치우친 시스템인 경우가 많다. 이들 기능 중심적인 시스템은 사용자가 해당 시스템을 어떻게 인지할 것인지에 대한 이해가 부족한 한계를 갖고 있으며, 이는 결국 시스템의 사용 편의성에 영향을 미칠 수 있다. 본 연구에서는 디지털 컨텐츠를 온라인과 오프라인에서 공유하여 사용할 수 있는 시스템의 구조적 메타포로 공간을 선택하였다. 사용자의 시스템 환경으로서 온라인과 오프라인, 그리고 사용자가 디지털 컨텐츠를 이용하여 수행하는 과업으로서 관리/저장과 사용으로 시스템의 구조를 구분하였으며, 이상의 구분에 따라 공간의 메타포를 이용하여 시스템을 디자인하였다. 이와 같이 구분한 시스템의 공간에 따라 사용자가 시스템에 대하여 갖는 관여도와 동기를 측정하였으며, 관여도의 수준과 동기의 차원에 따라 사용 편의성을 높일 수 있는 디자인 요소로서 시스템을 구현하고 있는 색상들 사이의 대비 수준과 색상의 색조 차원을 규명하고자 한다.

• Journal of Digital Convergence
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• v.11 no.1
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• pp.153-163
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• 2013

The application demand has been rapidly increasing along the growth of smart devices. Companies actively use the application as marketing tools. In particular, fashion businesses expect the improvement of customer loyalty and brand image by using the applications as the communication channel with consumers. This paper investigated the relationship between mobile shopping motives and mobile shopping acceptance. Influence of such variables on perceived importance of various fashion application attributes was also accessed. Data from male and female respondents were analyzed for the empirical study. Results indicated that mobile shopping motives were classified into convenience, ubiquity, impulsiveness and economic motives. Fashion application attribute was classified into contents, continuous management, design/visibility, downloading and community. Mobile shopping motives had significant correlation with fashion application acceptance. Shopping motives and fashion application acceptance had significant impacts on perceived importance of various fashion application attributes.

• Informatization Policy
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• v.27 no.3
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• pp.56-81
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• 2020

The purpose of this research is to empirically examine the effects of motivation and skill for digital devices and the Internet on the use of online services in the severely disabled people. In addition to the general effect of digital divide, particularly for the case of severely disabled people, the effects of physical and mental inconvenience of individuals were taken into account and the moderating effect was confirmed by classifying the groups that need help with online activities and those that do not. The 2018 Digital Divide Survey data of the National Information Society Agency was used for the study. As a research method, path analysis and multi-group analysis using a sequence access model to Internet use were performed. As a result, it was confirmed that even in the case of the disabled, the motivational factor affects the skill for digital device operation and Internet use, and this access skill sequentially affects the use of online services. In particular, it was found that the effect of strategic and technical skill for internet use is the most important for the use of online services for the disabled rather than the motivation or a simple operational skill for digital devices. In addition, it was found that even in the disabled group, those requiring help in using the Internet was more passive in using the online service than the rest in the group. The results of this study suggest the need for stronger capacity for physical access as well as support in building strategic and technical skills that enhance responsibilities and protect from risks in using the Internet among the people with disabilities.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• 2002.11a
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• pp.31-35
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• 2002

본 논문에서는 DVB-T 표준안의 모든 동작모드를 지원하며 임펄스 잡음 제거, 안테나 diversity 수신, 향상된 채널추정방법을 적용한 유럽향 디지털 TV 수신용 채널 칩셋의 설계에 관한 내용이다. 설계된 칩은 여러 개의 구성 블럭으로 구성되어있는데 여기에는 여러 가지의 향상된 알고리즘과 설계 아키텍쳐가 사용되었다. 가정용 가전기기들이 발생시키는 일정주기의 임펄스 잡음을 제거하기 위하여 임펄스 잡음 제거 블록을 AGC뒤에 사용하였다. 동기부는 대략적 주파수동기, 미세 주파수동기, 대략적 타이밍동기, 미세 타이밍 동기 등으로 이루어져 있으며 본 설계의 주파수 보상 영역은 $\pm$280Khz, 타이밍 보상 영역은 $\pm$500ppm이다. 파일럿 신호를 이용하여 채널추정과 보상을 수행하며 기존의 선형 보간기법과 함께 4개의 파일럿 신호를 이용한 보간기법을 사용하여 이동수신환경에 대응할 수 있도록 하였다. 이와 함에 수신성능을 개선할 수 있다고 알려진 안테나 diversity 기능을 채용하여 고정 및 이동 수신시의 수신성능을 향상시켰다. 안테나 diversity를 위해서 2개 이상의 수신 칩이 사용되며 이를 위해서 본 설계에서는 MRC(Maximum Ratio Combining)알고리즘을 사용하였다 본 설계는 5층 메탈 0.18um 공정을 사용하였으며 2.7Mbit 의 메모리 소자를 포함하여 대략 300 만 게이트의 회로크기를 갖으며 100 핀 PQFP로 제작되었다. 본 논문에서는 설계된 회로의 각 블록별 기능에 대한 설명과 함께 시뮬레이션 결과와 ASIC설계결과를 기술하였다.

• Journal of the Korea Society of Computer and Information
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• v.16 no.2
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• pp.201-206
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• 2011

With the development and supply of digital displayers, there has been a heightened interest of late in digital photo frames, eclipsing the existing print frames. This digital photo frame was developed into a new LCD digital photo frame that can be used not only for data display but also as a surveillance monitoring equipment when combined with a CCD camera. The developed photo frame uses a one-way communication encryption method that replaces the existing two-way communication encryption method to ensure the security of the surveillance image data. This method uses the chaotic signal's one-way synchronization phenomenon, where synchronization is made for a certain amount of time, after which the synchronized data can be encrypted and decoded at any point. It can yield the same results as the two-way communication encryption method. Moreover, if the proposed method is applied to the close-range communication methods of ubiquitous devices, it will be able to obtain more efficient results.