• Title/Summary/Keyword: Info-communication

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Real-Time Tracking of Moving Objects Based on Motion Energy and Prediction (모션에너지와 예측을 이용한 실시간 이동물체 추적)

  • Park, Chul-Hong;Kwon, Young-Tak;Soh, Young-Sung
    • Journal of Advanced Navigation Technology
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    • v.2 no.2
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    • pp.107-115
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    • 1998

  • In this paper, we propose a robust moving object tracking(MOT) method based on motion energy and prediction. MOT consists of two steps: moving object extraction step(MOES) and moving object tracking step(MOTS). For MOES, we use improved motion energy method. For MOTS, we predict the next location of moving object based on distance and direction information among previous instances, so that we can reduce the search space for correspondence. We apply the method to both synthetic and real world sequences and find that the method works well even in the presence of occlusion and disocclusion.

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Info-Convergence Ceramic Nanosystems

  • Jin, Wenji;Park, Dae-Hwan
    • Journal of the Korean Ceramic Society
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    • v.56 no.5
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    • pp.421-434
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    • 2019

  • We face many fascinating and diverse challenges, the most important among which is to determine how to store a large amount of information with novel approaches. Info-convergence ceramic nanosystems, which combine ceramic materials science and information technology, may provide an attractive alternative. This review considers recent multidisciplinary advances in the development of info-convergence nanosystems based on ceramic materials and discusses various strategies under ceramic-based information systems with a special focus on materials and nanohybridization technologies. Ceramic materials have played diverse roles not only as the generic coding support, but also as the central coding substance. The review highlights the ceramic nanohybrid bio code and ceramic nanoparticle optical code for applications in tracking-and-traceability management, nano-forensics, anti-counterfeiting, and even communication, as well as the four steps of encoding, encrypting, decrypting, and decoding for the desired applications. Additionally, associated challenges, potential solutions, and perspectives for future developments in the field are discussed.

  • https://doi.org/10.4191/kcers.2019.56.5.01 인용 PDF KSCI

The Impact of Social Support on the Relationship between Stress Levels and the Sustainability of Education of Adolescent Female Single-parent: The Moderating Effect of Leisure, Culture and Info-communication Cost (여성 청소년 한부모의 스트레스 수준과 학업지속 간의 관계에서 사회적 지원이 미치는 영향: 여가 및 문화, 정보통신비 지원의 조절효과)

  • Lee, Yoon-Jung
    • Journal of Digital Convergence
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    • v.19 no.9
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    • pp.349-360
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    • 2021

  • The purpose of this study is to verify whether social support for single parents in leisure, culture, and info-communication areas has the moderating effect on the impact of stress situations on academic continuity in single parents. To this end, technical statistics and logistic analysis were conducted on 248 single parents who were pregnant or pregnant at the age of 18 or older and raised their children after childbirth. As a result, one out of every four beneficiaries were involved, increasing the possibility of academic continuation by adjusting the stress-induced tendency of single parents to stop studying due to leisure, culture, and information and communication expenses. These results show that leisure, culture, and information and communication support are effectively contributing to improving the academic sustainability of single parents who want to stop studying due to stress relief and stress. Therefore, it is necessary to strengthen leisure, culture, and social support in the information and communication sectors for the academic continuation of single parents of teenagers.

  • https://doi.org/10.14400/JDC.2021.19.9.349 인용 PDF KSCI

A Study on the Implementation of a 40kbps Narrowband Powerline Communication Modem Using the Chirp Technique (Chirp 방식을 이용한 40kbps급 협대역 전력선 통신 모뎀 구현에 관한 연구)

  • Park, Sung-Wook;Ohm, Woo-Yong
    • Journal of the Institute of Electronics Engineers of Korea TE
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    • v.42 no.4
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    • pp.53-62
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    • 2005

  • In this paper, we implement a 40kbps narrowband powerline communication modem which is able to high transfer rate than conventional powerline communication technology by using the chirp technique that is one of the spread spectrum techniques. A modem that implement in this paper used the CEBus standard and a symbol that the linear variable frequency signal of 100$\sim$380kHz is kept for 25us. Experimental results, we verified the possibility that communication technology with the Chirp technique can make transfer rate more than 40kbps at narrowband communication.

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