• 한국문헌정보학회지
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• 제49권1호
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• pp.297-317
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• 2015

소셜미디어는 사람들이 자신의 경험이나 의견, 정보 등을 다른 사람들과 공유 활용할 수 있도록 해주는 웹 서비스로 자리 잡고 있는 반면, 무분별한 정보의 생성 및 전달로 인해 오히려 정보 환경의 신뢰성을 저하시키고 있다는 주장 또한 제기되고 있다. 이에 본 연구에서는 소셜미디어가 사람들의 정보공유에 실제적으로 어떤 영향을 미치고 있는지를 통계적으로 분석하였다. 분석 결과, 소셜미디어는 다른 사람들과 정보를 공유하거나 이에 대한 의견이나 피드백을 입수하는 등 전반적인 정보활동에 있어서 긍정적인 효과를 가져오는 것으로 나타났다. 반면, 정보의 신뢰도 저하, 불필요한 정보의 과다한 생성 등으로 인해서 정보의 효과적 활용을 위한 도구로써의 기능에 대해서는 상대적으로 낮은 인식도를 보이고 있다. 결국, 소셜미디어는 정보의 다양화와 양적 증대라는 장점과 함께 입수 가능한 정보의 신뢰도 저하라는 문제를 동시에 지니고 있다고 볼 수 있다.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권5호
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• pp.2484-2498
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• 2017

Various types of social media make the people share their personal experience in different ways. In some social networking sites. Some users post their reviews, some users can support these reviews with comments, and some users just rate the reviews as kind of support or not. Unfortunately, there is rare explicit negative comments towards other reviews. This means if there is a link between two users, it must be positive link. Apparently, the negative link is invisible in these social network. Or in other word, the negative links are redundant to positive links. In this work, we first discuss the feature extraction from social media data and propose new method to compute the distance between each pair of comments or reviews on social media. Then we investigate whether we can predict negative links via regression analysis when only positive links are manifested from social media data. In particular, we provide a principled way to mathematically incorporate multi-facet data in a novel framework, Constructing Negative Links, CsNL to predict negative links for discovering the hidden information. Additionally, we investigate the ways of solution to general negative link predication problems with CsNL and its extension. Experiments are performed on real-world data and results show that negative links is predictable with multi-facet of social media data by the proposed framework CsNL. Essentially, high prediction accuracy suggests that negative links are redundant to positive links. Further experiments are performed to evaluate coefficients on different kernels. The results show that user generated content dominates the prediction performance of CsNL.

• International Journal of Computer Science & Network Security
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• 제22권5호
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• pp.375-380
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• 2022

Virtual and augmented reality technologies provide access to learning materials and improve the organization of a modern library's media space. This article aims to identify the significance and role of virtual and augmented reality technologies in the modern library's media space organization. Methodology. The research uses a university library case study methodology to empirically investigate virtual and augmented reality technologies. Results. Virtual and augmented reality technologies provide research and improve learning outcomes by engaging students and learners with significant interest in such technologies. Libraries offer users the opportunity to create their VR content through available software. Students can test their VR content in the libraries' labs. Libraries support access to a variety of virtual and augmented reality content. The content is accessed using "virtual reality headsets" for viewing and workstations with "authoring software and loanable 360 cameras" for creating. The library lab is a space to support students' digital creativity and research through virtual and augmented reality. There are 3D Design Labs within the libraries as a medium to large group design learning spaces with virtual reality technology. Libraries form a media space where users can create videos, podcasts, portfolios, edit media, and book tours, and students and researchers can explore different scientific knowledge. In this way, technology ensures that risks in learning are minimized as opposed to hands-on seminars and classes.

• Journal of information and communication convergence engineering
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• 제14권1호
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• pp.21-25
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• 2016

N-screen is a promising technology to improve support for multimedia multicasting, content sharing, content mobility, media scalability, and seamless mobility. In this paper, the WiMedia distributed-MAC (D-MAC) protocol is adopted for development of a seamless N-screen wireless service. Furthermore, to provide a multi-hop, one source multi-use N-screen service through point to point streaming in a seamless D-MAC protocol, a dynamic multi-frame transmission technology is proposed. In this technology, a dynamic time slot allocation scheme and a multi-hop resource reservation scheme are combined. In the proposed dynamic time slot allocation scheme, two thresholds, a hard threshold and a soft threshold, are included to satisfy the power consumption and delay requirements. A multi-frame DRP reservation scheme is proposed to minimize end-to-end delay during the multi-hop transmissions between N-screen devices. The proposed dynamic multi-frame transmission scheme enhances N-screen performance in terms of the multi-hop link establishment success rate and link establishment time compared to the conventional WiMedia D-MAC system.

• 한국멀티미디어학회논문지
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• 제15권10호
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• pp.1212-1220
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• 2012

In this paper, a collision-free resource reservation scheme for WUSB (Wireless Universal Serial Bus) networks with WiMedia D-MAC (Distributed Medium Access Control). Since distributed characteristic of the WiMedia D-MAC supporting DRP (Distributed Reservation Protocol) scheme may cause lots of conflicts, overall performances of the WUSB with WiMedia D-MAC can be deteriorated. In addition, when we consider multi-hop environment, "mobile" hidden node problem due to mobility of WUSB devices can be happened, and it is a critical problem to mobile WUSB devices transceiving real-time QoS (Quality of Service) traffic. To tackle the problem, we propose a new DRP reservation mechanism to prevent DRP conflicts for multi-hop mobility support in WUSB networks with WiMedia D-MAC and show its improved performance via simulation results.

• International Journal of Internet, Broadcasting and Communication
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• 제8권1호
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• pp.53-63
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• 2016

This paper applies WiMedia UWB network into a wireless ship area network (WSAN) so as to support high-quality multimedia services on board and reliable instrument control information as well, since the need for mixed high-quality video traffic and shipboard control data traffic is essential for a high-cost valued digital ship. Thus, in this paper, prioritized contention access (PCA) and distributed reservation protocol (DRP) based on WiMedia UWB (ECMA-368) MAC protocols are combined and proposed to such mixed traffic environment, by varying the portions of superframe according to traffic type. It is shown that the proposed WiMedia UWB MAC protocol can provide reliable mixed video and shipboard control data traffic as well.

• 산업진흥연구
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• 제2권2호
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• pp.31-44
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• 2017

본 연구는 조직구성원인 인식하는 조직 내 커뮤니케이션 유형과 학습전이 풍토 간의 영향관계를 알아보기 위한 연구로 독립변인으로 설정한 조직 내 커뮤니케이션 유형은 상사와 커뮤니케이션, 매체 질 커뮤니케이션, 동료와 커뮤니케이션, 조직 전망 커뮤니케이션의 4개 변수로 제시하였으며, 종속변인인 학습전이풍토는 상사지원, 동료지원, 전이기회, 조직보상 인식의 4개 하위변수로 구성하였다. 본 연구목적을 달성하기 위해 2015년 중소기업 핵심직무역량 교육과정에 참여한 후 3개월 이상 경과한 참가자 150명을 대상으로 통계상 무의미한 설문을 제외 한 116부를 최종 활용하였다. 한편, 수집된 자료는 SPSS 20.0의 통계패키지 프로그램을 사용하여 빈도순석, 요인분석(Factor Analysis), 신뢰도 검증, 기술통계분석, 단순 다중회귀분석을 통해 연구가설을 검증하였다. 본 연구 결과 첫째, 조직 내 커뮤니케이션 유형과 학습전이 풍토인 상사의 지원 간의 영향관계에서 조직 내 커뮤니케이션 유형의 상사와 커뮤니케이션, 매체의 질 커뮤니케이션, 동료와 커뮤니케이션, 조직전망에 대한 커뮤니케이션은 모두 상사의 지원에 정(+)의 유의한 영향관계를 나타내었다. 둘째, 조직 내 커뮤니케이션 유형은 학습전이 풍토의 동요의 지원에는 모두 영향을 미치지 않는 것으로 나타났다. 셋째, 조직 내 커뮤니케이션 유형과 학습전이 풍토의 전이기화 간의 영향관계에서는 동료와 커뮤니케이션을 제외한 상사와 커뮤니케이션, 매체의 질 커뮤니케이션, 조직전망에 대한 커뮤니케이션이 전이기회에 정(+)의 영향관계를 나타내었다. 마지막으로 조직 내 커뮤니케이션 유형과 학습전이 풍토의 조직보상 인식에 대한 영향관계에서는 상사와 커뮤니케이션과 조직전망에 대한 커뮤니케이션이 정(+)의 영향관계를 나타냈다.

• Asian Journal for Public Opinion Research
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• 제8권1호
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• pp.41-58
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• 2020

This article attempts to explain social media use within the relationship between the public and government of Indonesia in the era of digital government, as well as to consider public opinion on this matter. This research is based on the application of social media logic and the theory of dialogic communication and action. A qualitative descriptive approach was used to observe the general behavior of social media use by 34 ministries in Indonesia, including interviews with the resource persons within the ministries and focus group discussions with members of the public and observers. The research shows that the relationship between the public and government is accommodative and in line with social media logic. The public sector implemented social media as its platform, which has been further adopted by all ministries. The public sector cannot avoid social media, as it has become part of basic connectivity, even though the use of social media by the government still tends to be in the form of presenting public information. There are advantages and disadvantages of the usage of social media by the government. The advantages include allowing the government to be more open via social media so that communication between the government as the ruling organization and its public can be more fluent. Social media provides space to the public sector in the practice of digital government. Some disadvantages arise as logical consequences that usage of social media cannot be separated from the implementation of digital government. The adaptive behavior of social media by the government can be found by following social media logic as part of digital government implementation. Social media logic causes the government to follow the rules of social media. In this context, the strength and power of the country seems to be regulated by social media. Therefore, more studies on how social media is managed in the context of its usage as digital government support is needed.

• 성인간호학회지
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• 제28권4호
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• pp.470-481
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• 2016

Purpose: The purpose of this study was to explore self-management support experiences among breast cancer survivors. Methods: Individual in-depth interviews were performed for survivors who had treated breast cancer after completion of chemotherapy and radiation therapy. Data were collected from April 2014 to July 2014 and analyzed using phenomenological method by Colaizzi. Results: Five essential themes were found as follows: 1) Need for continuous help and support to maintain self-management, 2) Need for professional resources to carry out regular exercise, 3) Overcoming psychological difficulties through others rather than health care professionals, 4) Disappointment with time with and circumstances of health care consultation, 5) Dependence on means of media for health related information. Conclusion: The results might contribute to an understanding of self-management support experienced by breast cancer survivors in Korea. It is suggested that evidence-based program for self-management support should be developed and applied to nursing intervention for breast cancer survivors.

• Architectural research
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• 제24권1호
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• pp.13-20
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• 2022

This research has been conducted to find answers to the questions of how projects that support local businesses work in areas undergoing gentrification and what are the achievements and limitations of these projects, based on the case studies of Brixton Pound and Pop Brixton supporting local businesses in Brixton in the London borough of Lambeth. To this end, this study collected data through interviews with local businesses belonging to each project and analysed them based on prior research on the projects, evaluation reports, and articles in the media. It began by investigating the supporting mechanisms of projects that support local businesses in the area, and then analysed and evaluated the projects' contribution to local businesses and the impact on the local community according to these mechanisms. The two projects in the case study showed contrasts in their support mechanisms, governance, and the role of Lambeth Council, and the local businesses' evaluations of the projects' support differed depending not only on the support mechanism of each project but also on business type and perceptions of the impact of gentrification.