• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2015.10a
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• pp.211-215
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• 2015

It comes into the spotlight as the new Blue Ocean in which the connected car industry in which the car and mobile communication technology is convergence. All sorts of infortainments services connecting with the portable electronic device(Smart phone, tablet PC, and MP3 player) and car are rapidly grown. The Connected car emphasizes the vehicle connectivity with the concept that the car has communication with the around on a real time basis and it provides the safety and expedience to the operator and using the thing of Internet (IoT) in the car and supports the application, presently, the entertainment service including the real-time Navigation, parking assistant function, not only the remote vehicle control and management service but also Email, multimedia streaming service, SNS and with the platform. Intelligent vehicle network is studied as the kind according to MANET(Mobile Ad Hoc Network) for the safety operation of the cars of the road and improving the efficiency of the driving. The intelligent vehicle network is comprised for the driving information offering changing rapidly of the communication(V2V: Vehicle to Vehicle) between the car and the car, communication(V2I : Vehicle to Infrastructure) between the infrastructure and the car, and V2X (Vehicle to Nomadic).

• Proceedings of the Korea Water Resources Association Conference
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• 2015.05a
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• pp.384-384
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• 2015

우리나라에 처음으로 건설된 경인운하는 한강과 서해를 잇는 길이 18km로 건설되었다. 이로 인해 한강과 서해에서 해수와 담수가 유입되고 유출되면서 매우 복잡한 수체 거동특성을 나타내고 있다. 특히 서해에서의 유입은 조위로 인해 유입량이 매일 변화하며 해수와 담수 간 비중차이로 인해 수심에 따른 거동특성도 상이하다. 따라서 본 연구에서는 수체거동특성을 조사하여 유수소통을 통한 수질관리에 활용하고자 한다. 수체의 거동을 조사하는 방법으로는 순간적인 유속을 조사하는 방법과 장기간 거동을 조사하는 방법이 있는데 본 조사에서는 부이를 이용하여 장기간 수체의 거동을 조사하였으며, 이 결과를 활용하여 EFDC모델을 적용한 모의를 실시하였다. 수체 거동조사는 2013년과 2014년에 걸쳐 주요지점에서 수심별로 수행하였다. 2014년 2월 18일에 아라마루 지점에서 수심 1m와 3m 지점에서 조사를 실시하였다. 이 기간 중 한강의 유입량은 최소 $5.2m^3/sec$, 최대 $14.2m^3/sec$을 나타냈고, 서해 유입량은 갑문의 유입과 배수문의 유출입량을 더하여 최대 $274.6m^3/sec$를 나타냈으며, 서해 유출량은 $136.9m^3/sec$으로 나타났다. 수심 1 m에서는 해수의 유입과 유출량에 의해 뚜렷한 유속의 변화를 확인할 수 있으며, 유출시 최대 유속은 38.5 cm/sec이고, 유입시 최대 유속은 49.3 cm/sec로 나타났다. 수심 3 m에서는 해수의 유입과 유출량에 의해 뚜렷한 유속의 변화를 확인할 수 있으며, 유출시 최대 유속은 34.4 cm/sec이고, 유입 시 최대 유속은 40.0cm/sec로 나타났다. 다양한 상황에 대한 운하수체의 유속 특성을 산정하기 위하여 수리모델을 적용하여 모의를 실시하였으며 한강에서 유입된 수체가 서해에 도달하는 시간을 산정해 보았다. 모의 조건은 2014년 5월 12일부터 22일까지의 유량조건을 경계조건으로 하였으며, particle tracking의 시작지점은 경인아라뱃길 김포터미널 지점 표층 1m를 대상으로 하였다. 모의 결과 김포터미널의 수체가 인천갑문에 도달 하는데 약 6.3일이 소요되는 것으로 산정되었다. 이는 유출입량 변화에 따라 달라지므로 향후 보다 다양한 조건에서 모의를 실시하여 수질관리에 활용할 수 있는 다양한 자료를 제공할 수 있을 것으로 판단되었다.

• Journal of The Korean Association of Information Education
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• v.11 no.2
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• pp.243-249
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• 2007

Most homepages of schools are available to publicize activities of education, to load educational materials efficiently. But we can't use current homepages of schools in making characteristic information or sharing educational resources. In this study, this I-CUBE system with RSS was designed and embodied for sharing characteristic educational activities and works in schools. Currently, I-CUBE is being under experimental test for sharing education activities and making community in elementry schools,.

• Proceedings of the Korea Information Processing Society Conference
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• 2018.10a
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• pp.253-256
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• 2018

최근 4차 산업혁명은 기존에 한정적이던 사물들의 역할을 끝없이 확장시키는 특징을 가진다. 인터넷을 기반으로 인간, 사물, 환경 등 모든 것은 연결이 가능한 Internet of Things(IoT) 시대가 다가오고 있다. 사람과 사물, 사물과 사물 간의 정보를 상호 소통하여 안전기능과 사용자의 편의성을 향상시키고 있으며, ICT의 융복합의 발전에 따라 자동차도 기존과 다르게 IoT 환경에 포함된다. 커넥티드 카는 차량, 인프라, 모바일 디바이스, 주변 환경 간의 통신을 통해 실시간으로 다양한 정보를 자동차를 중심으로 수집할 수 있게 되었으며 이를 기반으로 커넥티드 카 산업이 발전하고 있다. 그러나 이러한 발전 과정 속에서 커넥티드 카의 보안성의 문제는 반드시 해결되어야 한다. 보안성이 확보되지 않는다면, 자동차에서 발생하는 운전자에 대한 악의적인 공격을 통해 일반적인 보안 침해사고 수준을 넘어 사고를 유발시킬 경우 인명과 재산상의 큰 피해를 발생시킬 수 있다. 본 논문에서는 커넥티드 카의 통신구조를 알아보고 취약점 분석과 이에 대한 대응 방안을 제안하여 안전한 커넥티드 카의 활용 방안을 연구한다.

• Proceedings of the Korean Information Science Society Conference
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• 2010.06c
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• pp.197-200
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• 2010

웹 기술이 발달함에 따라 공공기관 웹사이트는 단순한 행정기관의 홍보에서 벗어나 국민과 정부 간의 의사소통의 증거인 동시에 업무의 기록으로서 역할을 담당하고 있다. 따라서 공공기관의 웹사이트들은 공공기록물로 인식하고 보호해야 한다. 하지만 공공기관의 웹기록물 중 하나인 심층 웹기록물은 실시간으로 상이한 페이지를 동적으로 구성하기 때문에 기존의 보존방법과는 다른 수집 보존 활용 기술이 요구된다. 국가기록원은 이러한 특징을 가지고 있는 심층 웹기록물을 장기보존하기 위해서 심층 웹기록물 장기보존 포맷인 KoDeWeb을 연구하고 개발하였다. KoDeWeb은 전자기록물이기 때문에 전자기록물로서 진본성 및 무결성을 보장해야 한다. 본 연구에서는 KoDeWeb의 전자기록물로서의 진본성 및 무결성을 증명하기 위해 국제 전자기록물 표준인 OAIS 참조모델에 KoDeWeb을 맵핑시켰다. 나아가 OAIS표준을 따르고 있는 전자기록물 장기보존 시스템에 KoDeWeb을 사용함으로써, 정부 및 공공기관의 심층 웹기록물 생성 및 수집을 체계화하고, 또한 민간이 운영하는 웹의 심층 웹기록물 장기보존에 활용할 수 있다.

• Journal of Digital Contents Society
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• v.13 no.1
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• pp.1-11
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• 2012

The BBS of Web Site is a space of informational communication to share information. At the moment, countless information is shared through various kinds of BBS. The shared information through the Web BBS can be gains to someone and losses to the other. Thus, for a long time, there have been many researches about technologies, which monitor information uploaded to Web BBS in real-time and inform the results to subjects. For BBS monitoring, existing methods have utilized direct approaches to DB or open API. Also, e-mail addresses have been utilized to inform results to subjects. However, there are two main problems for these methods. The one is a problem on closed BBS, which cannot be accessed, and the other is impossibility of supporting real-time alarm to e-mail. Especially, the real-time support for services, such as monitoring, is extremely important, since the main purpose of monitoring is based on the counter action for the result. The mobile Web has a merit to be accessed in anywhere, so that it is quite suitable for services requiring real-time support. However, the real-time support of mobile device has not been utilized enough, because each mobile phone has different standards of contents so that the contents should be pre-created. This paper suggests a technology that overcomes pitfalls of mobile Web while it is out of standard, and shows how the effect can be maximized through services such as monitoring, which requires the real-time support.

• Journal of Digital Convergence
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• v.19 no.4
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• pp.329-338
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• 2021

The purpose of this study was to investigate the influences of parent-adolescent communication, positive psychological capital on the psychological well-being of adolescents. The data were collected from 234 middle school students living in G city. Data were analyzed using Pearson correlation analyses and hierarchical regression analyses. Results of the study are summarized as follows. Fisrt, parent-adolescent communication and positive psychological capital showed positive correlations with the adolescents' psychological well-being. Second, parent-adolescent communication and positive psychological capital effect on psychological well-being. Third, in terms of individual factors, resilience had the greatest effect on psychological well-being, followed by hope, open communication with a mother, open communication with a father, optimism, in that order. The result for the effects of parent-adolescent open communication and positive psychological capital on adolescent's psychological well-being highlights the important roles played by the parent-adolescent communication of environment variable, positive psychological capital of psychological variable in improving and adolescent's psychological well-being. This study contributes to the literature by proving fundamental insights into an adolescent's psychological well-being and happy life.

• Journal of Digital Contents Society
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• v.15 no.2
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• pp.271-281
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• 2014

This study aimed to investigate the types that readers enjoying cartoons appreciated cartoons under the premise that cartoons enjoyed over the internet would expand their sensitivity through media such as monitors and mice. The sensitivity of readers enjoying digital cartoons can be stimulated through communication with carton writers or other readers as the interaction of the real-time response to the network. The choice and control are possible with a vertical scroll bar. Accordingly, readers can be absorbed in a work and focus on its story much more. As a result of extracting emotional stimulation factors to verify these assumptions, factors were able to classify the sensitivity that readers enjoying cartoons obtained from digital cartoons into two types, communication and story-focus type, based on the phases that emotional stimuli were strengthened. This study will be significant as a study to identify the relationship between media-technological factors and readers enjoying cartoons in relation to digital cartoons.

• Journal of Practical Engineering Education
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• v.15 no.1
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• pp.13-22
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• 2023

The purpose of this paper is to explore the impact of online problem-based learning (PBL) on learners' 4C competencies and learning experience. The results of the study showed that, first, online PBL had a statistically significant effect on learners' problem-solving skills, communication skills, and pre-service teacher efficacy. Second, learners were very satisfied with the online PBL experience and perceived it to be very beneficial to their learning and to themselves as preservice teachers. Third, learners perceived that the real-time video conferencing system and instant messenger were very helpful for successful online PBL. Fourth, regarding the important factors for successful online PBL, the participants in this study perceived that communication and sincerity are very important, and the role of the leader is also important, but personal intimacy among team members is relatively less important. Fifth, learners perceive that instructor feedback is very important for successful online PBL. Finally, the implications of this study are discussed along with suggestions for future research.

• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.23 no.1
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• pp.13-25
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• 2024

In traffic management, gaps in understanding traffic conditions continue to exist. While the self-belonging problem indicator develops relative to speed, belonging, and self-based relative inclination, it does not apply elimination criteria that may indicate situations that contrast with attribute-specific problems. In this study, we develop integrated indicators that specify communication situations and safety levels for modeling. We review indicators of changes in traffic conditions and raise safety issues, reviewing the indicators so that ITS data can be applied, analyzing the relationships between indicators through factor analysis. We develop combined, integrated indicators that can show changes and stability in traffic situations and that can be applied in traffic information centers to contribute to the development of a traffic environment that can monitor related traffic conditions.