scholarly journals Influence of Synchronization Signal Inaccuracy on DVB-T2 Local Content Insertion

2018 ◽  
pp. 19-24
Author(s):  
O. V. Kuharskaya ◽  
E. Z. Savin
Keyword(s):  
Information Flow ◽  
Single Frequency ◽  
Digital Content ◽  
Digital Information ◽  
Network Delay ◽  
Statistical Parameters ◽  
Local Content ◽  
Independent Information ◽  
Synchronization Signal ◽  
Information Stream

The article is aimed at specifying criteria of synchronization signal inaccuracy when DVB-T2 system local content re-placement cannot be carried out. Some settings of digital information stream are set as the initial data. The first part of the article specifies network delay calculation method. The second part of the article considers the signal cycle instability impact on estimation of local content device delay during its insertion in global information flow. Network delay saw-toothlike dependence on time is revealed, statistical parameters of synchronization signal instability are specified.  The third part of the article deals with analysis of method of substitution of two independent information flows by regionali-zation device. A model of T2 superframes comprising baseband frames (BB frames) which belong to different physical layer pipes (PLP) is described. The conditions under which the local information insertion becomes impossible are de-fined. Besides, the article considers other reasons of failure during single frequency networks (SFN) processing of local content insertion dealing with synchronization error at different stages of information flow digital content generation and delivery to DVB-T2.

Nomadic life archiving across platforms: Hyperlinked storage and compartmentalized sharing

2021 ◽  
Vol 23 (4) ◽  
pp. 796-815
Author(s):  
Yang Wang ◽  
Sun Sun Lim
Keyword(s):  
Everyday Life ◽  
Collective Memory ◽  
Life Experiences ◽  
Information Storage ◽  
Digital Data ◽  
Digital Content ◽  
Digital Information ◽  
Host Countries ◽  
Multi Media ◽  
Nomadic Life

People are today located in media ecosystems in which a variety of ICT devices and platforms coexist and complement each other to fulfil users’ heterogeneous requirements. These multi-media affordances promote a highly hyperlinked and nomadic habit of digital data management which blurs the long-standing boundaries between information storage, sharing and exchange. Specifically, during the pervasive sharing and browsing of fragmentary digital information (e.g. photos, videos, online diaries, news articles) across various platforms, life experiences and knowledge involved are meanwhile classified and stored for future retrieval and collective memory construction. For international migrants who straddle different geographical and cultural contexts, management of various digital materials is particularly complicated as they have to be familiar with and appropriately navigate technological infrastructures of both home and host countries. Drawing on ethnographic observations of 40 Chinese migrant mothers in Singapore, this article delves into their quotidian routines of acquiring, storing, sharing and exchanging digital information across a range of ICT devices and platforms, as well as cultural and emotional implications of these mediated behaviours for their everyday life experiences. A multi-layer and multi-sited repertoire of ‘life archiving’ was identified among these migrant mothers in which they leave footprints of everyday life through a tactical combination of interactive sharing, pervasive tagging and backup storage of diverse digital content.

scholarly journals Strong Copyright + DRM + Weak Net Neutrality = Digital Dystopia?

2006 ◽  
Vol 25 (3) ◽  
pp. 116 ◽  
Author(s):  
Charles W. Bailey Jr.
Keyword(s):  
Digital Rights Management ◽  
Internet Traffic ◽  
Digital Content ◽  
Net Neutrality ◽  
Digital Information ◽  
Digital Rights ◽  
Copyright Laws ◽  
Rights Management ◽  
Critical Issues ◽  
Potential Impact

Three critical issues—a dramatic expansion of the scope, duration, and punitive nature of copyright laws; the ability of Digital Rights Management (DRM) systems to lock-down digital content in an unprecedented fashion; and the erosion of Net neutrality, which ensures that all Internet traffic is treated equally—are examined in detail and their potential impact on libraries is assessed. How legislatures, the courts, and the commercial marketplace treat these issues will strongly influence the future of digital information for good or ill.

Chaotic Map for Securing Digital Content

2016 ◽  
Vol 3 (1) ◽  
pp. 20-35 ◽  
Author(s):  
Dhiraj Pandey ◽  
U. S. Rawat
Keyword(s):  
Secret Sharing ◽  
Chaotic Map ◽  
Logistic Map ◽  
Visual Cryptography ◽  
Visual Quality ◽  
Digital Content ◽  
Digital Information ◽  
Pixel Expansion ◽  
Empirical Results ◽  
Logistic Chaotic Map

Progressive Visual Cryptography (PVC) is quite suitable for sharing sensitive digital data.Previous research on PVC, such as Fang et al. (2006) and W.P.Fang et al.(2008) were all carrying pixel-expansion problem and also gives a poor visual quality on the recovered stacked image. Recently, Hou&Quan (2011) have developed a progressive scheme for secret sharing. It is observed that shares generated by the scheme are free from pixel expansion problem, but shares are not fully secure. In this paper, a new progressive sharing algorithm based on logistic chaotic map has been proposed to overcome the said limitation of Hou (2011) scheme. The irregular outputs of the logistic map are used to encode a secret digital information carrying image. The performance of the algorithm in the scheme of Hou (2011) is critically analyzed and compared with new suggested scheme. Empirical results are presented to showcase the performance of the authors' proposed scheme in terms of its effectiveness (imperceptibility and security) and feasibility.

scholarly journals A Novel Selected Subcarrier Method for Digital Video Broadcasting

2019 ◽  
Vol 9 (1) ◽  
pp. 4916-4921
Keyword(s):  
Digital Video ◽  
Single Frequency ◽  
Digital Video Broadcasting ◽  
Single Frequency Network ◽  
Video Broadcasting ◽  
Local Content ◽  
Novel Technique ◽  
Types Of Information ◽  
Global And Local

In Digital Video broadcasting there are two types of information namely global and local content. Broadcasting both information using multifrequency network requires large spectrum. To overcome that single frequency network is incorporated.Inorder to transmit both the information in a single frequency network, a novel technique, namely selected subcarrier method of Digital Video Broadcasting is proposed. This technique is well suited in a scenario where the transmission of two different information is targeted over the entire globe at the same time. This methodology proficiently handles the concept of Orthogonality principles among the OFDM subcarrier. In this technique certain dedicated subcarrier is used for transmission of Local content in the network.Also, wavelet-based OFDM has been proposed, which outperforms the existing Fourier based OFDM

DRM Protection Technologies

2013 ◽  
pp. 87-98
Author(s):  
Gary Hackbarth
Keyword(s):  
Digital Rights Management ◽  
Digital Content ◽  
Sensitive Information ◽  
Digital Information ◽  
General State ◽  
Future Directions ◽  
Research And Practice ◽  
Digital Rights ◽  
Security Research ◽  
Rights Management

Digital Rights Management (DRM) is concerned with the ownership of digital information and access to that information. Organizations and individuals increasingly seek to prevent unauthorized or inadvertent release of owned, proprietary, or sensitive information. A variety of technologies are available to prevent the piracy and verify the true owners of digital content, unfortunately specifics of these technologies are often proprietary. Content can be protected by a variety of encryption techniques for the storage and transmission of digital information yet; these same techniques can limit access and usability of digital content. This chapter discusses the general state of digital security and technologies in use followed by a discussion of future directions for digital security research and practice.

scholarly journals Systematic Improvement of User Engagement with Academic Titles Using Computational Linguistics

10.28945/4338 ◽  
2019 ◽  
Keyword(s):  
Computational Linguistics ◽  
Empirical Support ◽  
Computer Applications ◽  
Digital Content ◽  
Systematic Evaluation ◽  
Future Research ◽  
User Engagement ◽  
Digital Information ◽  
Science Field ◽  
Starting Point

Aim/Purpose: This paper describes a novel approach to systematically improve information interactions based solely on its wording. Background: Providing users with information in a form and format that maximizes its effectiveness is a research ‎question of critical importance. Given the growing competition for ‎users’ attention and interest, it is agreed that digital content must engage. However, there are no clear methods or ‎frameworks for evaluation, optimization and creation of such engaging content. Methodology: Following an interdisciplinary literature review, we recognized three key attributes of words that drive user engagement: (1) Novelty (2) Familiarity (3) Emotionality. Based on these attributes, we developed a model to systematically improve a ‎given content using computational linguistics, natural language processing (NLP) and text analysis (word frequency, sentiment analysis and lexical substitution). We conducted a pilot study (n=216) in which the model was used to ‎formalize evaluation and optimization of academic titles. A between-group design (A/B testing) was used to compare responses to the ‎original and modified (treatment) titles. Data was collected for selection and evaluation (User Engagement Scale). Contribution: The pilot results suggest that user engagement‎ with digital information is ‎fostered by, and perhaps dependent upon, the wording being used. They also provide empirical support that engaging content can be systematically evaluated and produced. Findings: The preliminary results show that the modified (treatment) titles had significantly higher scores for information use and user engagement (selection and evaluation). Recommendations for Practitioners: We ‎propose that computational linguistics is a useful approach for optimizing information interactions. The ‎empirically based insights can inform the development of digital content strategies, ‎thereby improving the ‎success of information interactions. ‎ Recommendations for Researchers: By understanding and operationalizing ‎content strategy and engagement, we can ‎begin to ‎focus efforts on designing interfaces which ‎engage users with features ‎‎‎appropriate to the task and context of their interactions. This study will benefit the ‎information science field by ‎enabling researchers ‎and practitioners ‎alike to ‎understand the dynamic relationship ‎between users, computer applications and ‎tasks, ‎how to ‎assess whether ‎engagement is taking place and how to design ‎interfaces that ‎engage ‎users.‎ Impact on Society: This research can be used as an important starting point for ‎understanding ‎the phenomenon of digital ‎information interactions and the factors that promote ‎and facilitates them. It can also aid in the ‎‎development of a broad framework for systematic evaluation, ‎optimization, and creation of effective digital ‎content. ‎ Future Research: Moving forward, the validity, reliability and generalizability of ‎our model should be tested in various ‎contexts. In future research, we propose to include additional linguistic factors and ‎develop more ‎sophisticated interaction measures. ‎

scholarly journals Arquivamento da Web no contexto das Humanidades Digitais: da produção a preservação da informação digital | Web archiving in the context of digital humanities: from production to preservation of digital information

2019 ◽  
Vol 15 (1) ◽  
Author(s):  
Moisés Rockembach
Keyword(s):  
Sense Of Community ◽  
Digital Humanities ◽  
Digital Content ◽  
Digital Information ◽  
Web Content ◽  
Web Archiving ◽  
Research And Practice ◽  
Online Access ◽  
Short Lifecycle

RESUMO Este trabalho procurou trazer as relações existentes entre as humanidades digitais, como campo emergente de estudos inter e transdisciplinares, e a área de estudo do arquivamento da web, que consiste em políticas, metodologias e tecnologias que envolvem a seleção, captura, armazenamento, preservação e disponibilização de conteúdos da web para acesso e uso retrospectivo. Sabendo-se que os conteúdos web possuem um ciclo de vida relativamente curto devido à rápida obsolescência tecnológica e dificuldades no armazenamento a longo prazo. e que diversos esforços são necessários para a preservação digital, observou-se que o senso de comunidade, como uma das características das humanidades digitais, pode ser um fator importante para um melhor desenvolvimento de arquivos da web, nacionais e em diversos outros países, já que se verifica que a grande parte dos países do hemisfério sul não possui arquivos da web e, portanto, correm o risco de perderem seus conteúdos web e sua memória digital.Palavras-chave: Arquivamento da Web; Humanidades Digitais; Preservação Digital; Comunidades de Pesquisa e Práticas.ABSTRACT This work aims to bring the existing relationships between Digital Humanities, as an emerging field of inter and transdisciplinary studies, and the field of web archiving, which consists of policies, methodologies and technologies that involve the selection, capture, storage,  preservation and availability of web content for access and retrospective use. Web content has a relatively short lifecycle, since content producers generally do not care about keeping online access for the long term and that several efforts are required for success fully preserving digital content. Given this, it has been observed that the sense of community, one of the characteristics of Digital Humanities, can be an important factor for a better development of archives – both nationally and for other countries in the Southern Hemisphere, since most of these countries do not have web archives and, therefore, risk losing their web content and digital memory.Keywords: Web Archiving; Digital Humanities; Digital Preservation: Research and Practice Communities.

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