• 사물인터넷융복합논문지
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• 제7권1호
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• pp.79-89
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• 2021

본 연구는 디지털 트랜스포메이션 시대에 사물인터넷(IoT) 기기와 서비스에 대한 정보 격차를 규명하고자 하였다. 이를 위하여 사물인터넷 기기와 서비스에 대한 미래 이슈를 전망하는 인식의 차이를 분석하고, 사물인터넷 기기와 서비스에 대한 인지도와 사용경험에 따른 디지털 기술의 필요성과 삶의 도움에 대한 차이를 분석하였다. 또한 교육수준과 교육수요를 분석하였다. 광주광역시와 전라남도에 거주자를 대상으로 2021년 2월 15일부터 3월 7일까지 설문조사를 실시하였고, 232명이 응답하였다. SPSS 21.0을 활용하여 분석하였고, 모든 통계값은 평균값으로 제시하였다. 연구 결과는 다음과 같다. 첫째, 지능정보사회 인지도에 따른 지능정보사회 미래이슈, 인공지능기기 및 서비스로 제공 받는 삶의 도움, 지능정보기술 필요성 차이를 제시하였다. 둘째, 인공지능기기의 인지도 및 사용 경험에 따른 인공지능으로 부터 제공 받는 삶의 도움 차이를 제시하였다. 셋째, 인공지능서비스의 인지도 및 사용 경험에 따른 인공지능으로 부터 제공 받는 삶의 도움 차이를 제시하였다. 넷째, 인공지능기술 인지도 및 사용 경험에 따른 필요성 차이를 제시하였다. 다섯째, 지능정보사회의 교육수준과 교육수요를 조사하여 제시하였다. 이러한 연구를 결과를 통하여 디지털 트랜스포메이션 시대에 정보 격차 해소를 위한 제언을 제시하였다.

• 한국정보통신학회논문지
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• 제26권11호
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• pp.1592-1598
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• 2022

본 논문에서는 최근 증가하는 무인주문기기의 인터페이스 및 기기 환경에 대한 직관력과 사용성 부족으로 인해 이러한 서비스의 소외된 디지털 소외계층을 위한 개선체계를 제안한다. 키오스크 서비스의 문제점은 디자인 원칙 중 직관력이 부족하고 일반적인 입석 기준에 맞는 환경에서 휠체어 승객 등이 사용할 수 없다는 점이다. 이를 해결하기 위해 모바일 기기로 QR코드를 촬영하여 키오스크와 같은 환경을 이용할 수 있는 서비스를 제안한다. 실험 결과 기존의 키오스크 모델 이용에서는 20대는 어려움을 겪지 못했으나 고령층의 경우에는 키오스크의 이용이 어려워 도움을 요청하는 결과가 나왔다. 개선된 키오스크의 모델은 20대는 어려움이 없이 진행 하였고, 고령층의 경우에서도 어려움 없이 진행 하는 결과가 나왔다.

• 한국정보기술응용학회:학술대회논문집
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• 한국정보기술응용학회 2005년도 6th 2005 International Conference on Computers, Communications and System
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• pp.183-186
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• 2005

WUSB is a new technology which combines the speed and the security of wired USB with the easy use of wireless technology. In this paper, GUI for WUSB is designed and implemented to show the connectivity and contents of the WUSB devices. Also, the proposed GUI shows the log window while content transfers occur between the host and device. The proposed GUI can be used for various wireless technologies which provide wireless function with existing USB hosts and devices.

• Journal of Mechanical Science and Technology
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• 제14권5호
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• pp.518-529
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• 2000

A detailed and thorough parametric study of digital image correlation method is presented. A theoretical background and development of the method were introduced and the effects of various parameters on the determination of displacement outputs from the raw original and deformed image information were examined. Use of the normalized correlation coefficient, the use of 20 to 40 pixels for a searching window side, 6 variables searching, bi-cubic spline sub pixel interpolations and the use of coarse-fine search are some of the key choices among the results of parametric studies. The displacement outputs can be further processed with two dimensional curve fitting for the data noise reduction as well as displacement gradient calculation.

• 한국통신학회논문지
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• 제41권2호
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• pp.198-205
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• 2016

In the contemporary world, the breakthrough of the ultra-modern technologies has been blessed with the camera. This device has become omnipresent either integrated on with other devices such as smartphones, notebooks, laptops, handheld devices and so on. In addition, digital signage, display and monitors have also become very widespread around us everywhere. These types of scenarios have made imaginable to imagine about the consuming of the unused resources. The dual use of displayed contents can make it possible to use it as an advertisement as well as a transmitter for camera based communication. In this study, a digital watermarking algorithm based communication method has been analyzed. We have introduced Binary Pattern (BP) based a new message extracting algorithm to extract message in an efficient way from the watermarked image compared to other algorithms. Besides, the previous works using camera and display have been illustrated using comparative analysis. This paper has demonstrated an advantageous overview using the experimental results which reveals that the proposed methodology significantly reduces the complexity while augmenting the advantages of the proposed scheme. Moreover, the simulation results have shown the advantages of the proposed scheme over the other schemes.

• ETRI Journal
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• 제24권4호
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• pp.259-269
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• 2002

Polymers are emerging as new alternative materials for optical communication devices. We developed two types of polymer-based devices for optical communications. One type is for ultra high-speed signal processing that uses nonlinear optical (NLO) polymers in such devices as electro-optic (EO) Mach-Z${\ddot{e}} $ hnder (MZ) modulators and EO 2${\times}$2 switches. The other is for WDM optical communications that use low-loss optical polymers in such devices as 1${\times}$2, 2${\times}$2, 4-arrayed 2${\times}$2 digital optical switches (DOSs) and 16${\times}$16 arrayed waveguide grating (AWG) routers. For these devices, we synthesized a polyetherimide-disperse red 1 (PEI-DR1) side chain NLO polymer and a low-loss optical polymer known as fluorinated polyaryleneethers (FPAE). This paper presents the details of our development of these polymeric photonic devices considering all aspects from materials to packaging.

• 디지털융복합연구
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• 제19권10호
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• pp.133-141
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• 2021

최근 인터넷과 디지털 기기를 능동적으로 활용하는 고령층이 점차 증가하고 있다. 본 연구는 정보기술 활용에 있어서 취약계층으로 여겨지는 고령소비자의 기술 활용의지와 디지털 소외감 그리고 정보기술 활용을 돕는 조력자 경험이 삶의 만족도에 미치는 영향력을 규명하는 것을 목적으로 한다. 이를 위해 인터넷 활용이 가능한 60대 이상의 고령소비자 총 311명을 연구대상으로 선정하여 온라인 설문조사를 통해 자료를 수집 및 분석하였다. 연구결과, 고령소비자는 정보기술을 주체적으로 활용하려는 의지가 강하고 디지털 소외감을 낮게 지각하며 기술 활용 시 조력자의 도움을 많이 받는 것으로 나타났다. 회귀분석 결과, 디지털 소외감을 낮게 지각할수록, 기술사용에 있어서 조력자의 도움을 많이 경험할수록 고령소비자의 삶의 만족도가 유의하게 증가하였다. 본 연구는 첨단정보기술 환경에서 고령소비자의 삶의 만족도 증진에의 영향요인을 밝히고 정책적, 실무적 시사점을 제안한다는 점에서 가치가 있다.

• 대한청각학회지
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• 제18권3호
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• pp.105-111
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• 2014

Assistive listening devices (ALDs) refer to various types of amplification equipment designed to improve the communication of individuals with hard of hearing to enhance the accessibility to speech signal when individual hearing instruments are not sufficient. There are many types of ALDs to overcome a triangle of speech to noise ratio (SNR) problems, noise, distance, and reverberation. ALDs vary in their internal electronic mechanisms ranging from simple hard-wire microphone-amplifier units to more sophisticated broadcasting systems. They usually use microphones to capture an audio source and broadcast it wirelessly over a frequency modulation (FM), infra-red, induction loop, or other transmission techniques. The seven types of ALDs are introduced including hardwire devices, FM sound system, infra-red sound system, induction loop system, telephone listening devices, television, and alert/alarm system. Further development of digital wireless technology in hearing instruments will make possible direct communication with ALDs without any accessories in the near future. There are two technology solutions for digital wireless hearing instruments improving SNR and convenience. One is near-field magnetic induction combined with Bluetooth radio frequency (RF) transmission or proprietary RF transmission and the other is proprietary RF transmission alone. Recently launched digital wireless hearing aid applying this new technology can communicate from the hearing instrument to personal computer, phones, Wi-Fi, alert systems, and ALDs via iPhone, iPad, and iPod. However, it comes with its own iOS application offering a range of features but there is no option for Android users as of this moment.

• 디지털산업정보학회논문지
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• 제12권4호
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• pp.51-58
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• 2016

In the area of hotel and tourism sector, various research are analyzed using big data. Big data is being generated by any digital devices around us all the times. All the digital process and social media exchange produces the big data. In this paper, we analyzed the de-identification method of big data to use the personal information of hotel guests. Through the analysis of these big data, hotel can provide differentiated and diverse services to hotel guests and can improve the service and support the marketing of hotels. If the hotel wants to use the information of the guest, the private data should be de-identified. There are several de-identification methods of personal information such as pseudonymisation, aggregation, data reduction, data suppression and data masking. Using the comparison of these methods, the pseudonymisation is discriminated to the suitable methods for the analysis of information for the hotel guest. Also, among the pseudonymisation methods, the t-closeness was analyzed to the secure and efficient method for the de-identification of personal information in hotel.

• 디지털산업정보학회논문지
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• 제10권4호
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• pp.1-9
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• 2014

Recently, with the enlargement of cloud computing, virtual desktop infrastructure(VDI) can be an alternative of the existing personal computer based information environment. For the case of partially introduced VDI coexisting with personal computer environment, we suggest a virtual folder based approach to control the overall digital contents within an organization with a case of implementation. Although a centralizing device was used for storage and sharing of organization's digital contents, it was not easy to accomplish centralizing digital contents completely. It is tried to prevent users from utilizing their own storage in their personal computers or virtual machines and to use virtual folder which transfer and store digital contents to and in EDMS. The virtual folder system of this paper looks like a real folder in a personal computer, but it is another virtual device for outer storage devices including EDMS. It can be an alternative and reference of digital contents control for future applications of cloud computing.