• Journal of Contemporary Eastern Asia
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• 제16권2호
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• pp.20-43
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• 2017

While the Internet has been used to galvanise people for the collective good, many have voiced concerns over the noise and vitriol present online and polarisation. In Singapore where the government regulates traditional mainstream media such as print and broadcast, the online space has been described as a "Wild Wild West" rife with rumours, untruths and misinformation. Such developments do not only exert a potential negative effect on the deliberative nature of public discourse but also skew bias towards the online space, affecting the ability of online users to communicate with authority and power. This study seeks to examine the rationality of the cyberspace through using a new "rationality" framework to analyse political discourse online. Comprising objectivity, emotionality and partisanship, the rationality framework was applied to a content analysis of 197 blogs with political content in 2014. The analysis indicated that the online political space was not the Wild Wild West that it was touted to be with significant levels of objectivity and non-partisanship. There was a stark absence of emotional discourse, and relationships were observed between bloggers' anonymity and rationality. Cognisant of academia's and policymakers' interest on the quality and effects of online discourse, the proposed analytical framework and the study findings hold implications for both developed and developing countries.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제13권2호
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• pp.514-535
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• 2019

Information-centric networks operate under the assumption that all network components have built-in caching capabilities. Integrating the caching strategies of information centric networking (ICN) with wireless virtualization improves the gain of virtual infrastructure content caching. In this paper, we propose a framework for software-defined information centric virtualized wireless device-to-device (D2D) networks. Enabling D2D communications in virtualized ICN increases the spectral efficiency due to reuse and proximity gains while the software-defined network (SDN) as a platform also simplifies the computational overhead. In this framework, we propose a joint virtual resource and cache allocation solution for latency-sensitive applications in the next-generation cellular networks. As the formulated problem is NP-hard, we design low-complexity heuristic algorithms which are intuitive and efficient. In our proposed framework, different services can share a pool of infrastructure items. We evaluate our proposed framework and algorithm through extensive simulations. The results demonstrate significant improvements in terms of visiting latency, end user QoE, InP resource utilization and MVNO utility gain.

• 정보보호학회논문지
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• 제20권6호
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• pp.33-42
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• 2010

최근 디지털 컨버전스가 가속화되면서 급부상하고 있는 차세대 IPTV 서비스는 디바이스에 구애받지 않고 자유롭게 콘텐츠의 생성과 소비가 가능하여, 전송환경과 디바이스의 특성에 맞는 실시간 서비스와 콘텐츠의 재사용 서비스를 확장성 있게 제공함을 특정으로 한다. 본 논문에서는 이러한 차세대 IPTV 서비스를 제공함에 있어서 요구되는 보안 요구조건과 이를 해결하기 위한 보안 프레임워크를 제안한다. 제안 방법은 기본적으로 SVC (Scalable Video Coding)를 사용하는 단일 메커니즘으로써, 서비스가 제공되는 모든 구간에 대하여 높은 보안성을 보장하며, 동시에 안전한 미디어 적응변환과 동적인 보안 강도 조절이 가능하다는 장점이 있다. 본 논문에서는 현실적인 서비스 시나리오를 바탕으로 제안 방법의 타당성을 입증하였고, 보안 기술 자체만으로도 새로운 비즈니스 기회를 창출 할 수 있는 가능성을 제시하고 있다는 점에서 의의가 있다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2005년도 추계 종합학술대회 논문집
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• pp.627-632
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• 2005

무선 환경에서의 온라인 유통 과정은 기존의 오프라인이나 유선 네트워크와는 다른 요소들이 많이 포함되어 있다. 더구나 디지털 저작물인 멀티미디어 콘텐츠는 쉽고 빠르게 불법 복제되고 전파될 수 있다. 이러한 환경 하에서 디지털 콘텐츠의 저작권과 관련된 당사자들의 권리와 이익을 보호할 수 있는 체계가 필요하다. 본 논문에서는 멀티미디어 유통 프레임워크인 MPEC-21에 기반한 무선 환경에서의 콘텐츠 유통 프레임워크와 UCI(Universal Content Identifier)를 적용한 프로세스를 제안하였다. 이 모델은 디지털 저작권 관리 시스템에 적용되어 전자상거래 시장에서 온라인 유통에 있어서 거래 당사자들 사이의 상호 권리 침해 방지를 위한 방법으로 활용될 수 있다.

• Geomechanics and Engineering
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• 제19권4호
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• pp.307-314
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• 2019

Light construction waste (LCW) particles are pieces of light concrete or insulation wall with light quality and certain strength, containing rich isolated and disconnected pores. Mixing LCW particles with soil can be one of the alternative lightweight soils. It can lighten and stabilize the deep-thick soft soil in-situ. In this study, the unconfined compressive strength (UCS) and its mechanism of Construction Waste Stabilized Lightweight Soil (CWSLS) are investigated. According to the prescription design, totally 35 sets of specimens are tested for the index of dry density (DD) and unconfined compressive strength (UCS). The results show that the DD of CWSLS is mainly affected by LCW content, and it decreases obviously with the increase of LCW content, while increases slightly with the increase of cement content. The UCS of CWSLS first increases and then decreases with the increase of LCW content, existing a peak value. The UCS increases linearly with the increase of cement content, while the strength growth rate is dramatically affected by the different LCW contents. The UCS of CWSLS mainly comes from the skeleton impaction of LCW particles and the gelation of soil-cement composite slurry. According to the distribution of LCW particles and soil-cement composite slurry, CWSLS specimens are divided into three structures: "suspend-dense" structure, "framework-dense" structure and "framework-pore" structure.

• 한국과학교육학회지
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• 제16권3호
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• pp.270-277
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• 1996

The purpose of this study is to classify and state of evaluating objectives using three-dimensional assessment framework of science inquiry. The first, as an attempt to provide a theoretical base for developing an assessment framework taxonomies and classificatory schemes of educational objectives were analyzed Bloom's taxonomy, Klopfer's specification, NAEP(National Assessment of Educational Progress), and APU(Assessment of Performance Unit) framework. The second, three-dimensional assessment framework use in this study has formed a clear definition of three-dimensional matrix. These three dimensions consists of content, context and process. The third, the model of three-dimensional taxonomy of science inquiry developed in this study is presented. In addition, an example of classification and statement of evaluating objectives based on the model is presented.

• Journal of information and communication convergence engineering
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• 제9권1호
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• pp.50-54
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• 2011

Recently there are so many media contents created and used by variety routes. Therefore, it is essential to make a new platform which is used for distributing media contents include IPTV. With open IPTV service, developing the new platform became even more important. Because open IPTV makes it possible for consumers to choose contents regardless of contents of the providers. The new platform has to accept current variety service structure. MPEG-21 multimedia framework was developed to satisfy these needs. It presented the distribution framework of the contents but didn't restrict the particular solutions for protecting the rights. In this paper, we present authoring and consuming system for package contents based on MPEG-21 Multimedia Framework for distributing media resources and managing the license of multimedia contents

• 한국콘텐츠학회논문지
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• 제10권3호
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• pp.301-314
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• 2010

디지털콘텐츠산업의 성장과 콘텐츠의 첨단화, 장르 기술간 융합화에 따라 디지털콘텐츠기술의 중요성이 증대되고 있다. 디지털콘텐츠산업의 발전과 경쟁력을 위해서는 우수한 디지털콘텐츠기술 확보가 필수적이며, 국가 적으로 이를 육성할 정책도구가 필요하고, 첨단 콘텐츠 기술개발, 기술이전 및 거래, 해외수출 등 디지털콘텐츠기술의 산업적 활용 및 가치창출 효과를 극대화하기 위한 사업화가 필요한 시점이다. 이를 위하여 막대한 공공 및 기업자금이 성과 높은 콘텐츠 기술경쟁력 강화를 위한 연구개발에 투입되고 있는 바, 연구개발 수행과 효과적인 의사결정을 위해 성과물에 대한 투자효율성을 점검할 객관적이고 합리적인 기술가치 평가체계가 필요하다. 이에 본 연구는 디지털콘텐츠기술의 기술개발 성과 이전 기술 확산 및 사업화 촉진을 위하여 디지털콘텐츠 기술의 가치를 평가하고, 이를 통한 효과적인 의사결정 지원과 정책수립을 위한 디지털콘텐츠기술가치 평가 프레임워크를 개발하고 이를 사례에 적용하여 그 유용성을 검증하고자 한다.

• 정보교육학회논문지
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• 제18권2호
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• pp.307-316
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• 2014

초등학교와 중학교에서의 정보과학 교과를 위한 운영체제 교육을 위해 선행 연구 자료를 분석하여 교육내용체계(안)을 마련하였다. 그리고 교육내용체계에 대한 교육 필요성과 교육 시기를 온라인 설문조사를 통해 분석한 후 그 결과를 토대로 운영체제 교육내용을 나선형 교육과정을 기반으로 구성하였다. 즉, 운영체제 교육 영역을 운영체제의 이해, 운영체제의 실제 등 2개 영역으로 구분한 후, 그것을 다시 학년별로 체험하기, 조작하기, 관리하기, 원리알기 등 4단계로 제시하였다. 향후 운영체제 교육이 체계적으로 이루어지기 위해서는 운영체제와 관련된 교재와 교구가 개발되어야 하고, 정보과학 과목이 초등학교에 신설되어야 하며, 교육대학교에서 운영체제의 원리와 관련된 강좌를 운영되어야 할 것이다.

• 한국지능시스템학회:학술대회논문집
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• 한국퍼지및지능시스템학회 2003년도 ISIS 2003
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• pp.272-275
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• 2003

This paper presents the role and its function of Tool server. MPEG-21 means multimedia framework for delivery and consumption of multimedia which is being discussed in ISO/IEC 21000. A view of MPEC-21 aims to define multimedia framework to enable transparent use of multimedia resource across a wide range of networks and devices used by different communities. MPEG-21 will enable all-electronic creation delivery and trade of digital multimedia content and transparent usage of various content types on network device. Therefore, we can provide access to information and services from almost anywhere at anytime with various terminals and networks. In order to support multimedia delivery chain that contains content creation, production, delivery and consumption, we need many standards(elements) for identify, describe, manage and protect the content. Thus, we define Digital Item Player(DIP), Digital Item Adaptation(DIA) server and Tool server as primary objects of MPEG-21 multimedia framework. DIP provides a function which creates and consumes Digital Item(DI) as a kind of a digital object by user. A DI contains both media resources and metadata including rights information. DIA server deals with the usage environment description schema of the user characteristics, terminal and network characteristics and natural environments. DIA server adapts the original DI to the usage environment description sent from the terminal and transmits the adapted DI to the terminal. Tool server searches for a tool requested from DIP or DIA and downloads the best tool to DIP or DIA server. In this paper, we present how Tool sewer is organized and is used among 2 primary objects. The paper is structured as followings: Section 1 briefly describes why MPEG-21 is needed and what MPEG-21 wants. We see requirement that tool server must equip functionally in section 2. The proposed tool server,its structure and its functionality are presented in section 3. Section 4 explains a scenario that tool server transmits tool to DIP and shows the experimental result. The paper concludes in section 5.