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Médias et technologies de communication au Maghreb et en Méditerranée : Mondialisation, redéploiements et « arts de faire »

Authors: ---
ISBN: 9782821850378 DOI: 10.4000/books.irmc.214 Language: French
Publisher: Institut de recherche sur le Maghreb contemporain
Subject: Social Sciences
Added to DOAB on : 2019-12-06 13:15:38
License: OpenEdition Licence for Books

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Smartphones from an Applied Research Perspective

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ISBN: 9789535135890 9789535135906 Year: Pages: 222 DOI: 10.5772/65172 Language: English
Publisher: IntechOpen
Subject: Media and communication
Added to DOAB on : 2019-10-03 07:51:50

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Smartphones from an Applied Research Perspective highlights latest advancements of research undertaken in multidisciplinary fields where the smartphone plays a central role. Smartphone is synonymous to innovation in today's society. Very few visionaries predicted its social, cultural, technological and economic impacts, although the usage of smartphone is almost pervasive and transcendental. This book is meant for researchers and postgraduate students looking forward for hot topics for their final year projects, doctoral or even postdoctoral studies. Practitioners too will find food for thought and will surely be amazed by the broadness of the topics presented.

Broadband Communications Networks - Recent Advances and Lessons from Practice

Authors: ---
ISBN: 9781789237429 9781789237436 Year: Pages: 432 DOI: 10.5772/intechopen.69590 Language: English
Publisher: IntechOpen
Subject: Media and communication
Added to DOAB on : 2019-10-03 07:51:52

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Nowadays, the Internet plays a vital role in our lives. It is currently one of the most effective media that is shifting to reach into all areas in today's society. While we move into the next decade, the future of many emerging technologies (IoT, cloud solutions, automation and AI, big data, 5G and mobile technologies, smart cities, etc.) is highly dependent on Internet connectivity and broadband communications. The demand for mobile and faster Internet connectivity is on the rise as the voice, video, and data continue to converge to speed up business operations and to improve every aspect of human life. As a result, the broadband communication networks that connect everything on the Internet are now considered a complete ecosystem routing all Internet traffic and delivering Internet data faster and more flexibly than ever before. This book gives an insight into the latest research and practical aspects of the broadband communication networks in support of many emerging paradigms/applications of global Internet from the traditional architecture to the incorporation of smart applications. This book includes a preface and introduction by the editors, followed by 20 chapters written by leading international researchers, arranged in three parts. This book is recommended for researchers and professionals in the field and may be used as a reference book on broadband communication networks as well as on practical uses of wired/wireless broadband communications. It is also a concise guide for students and readers interested in studying Internet connectivity, mobile/optical broadband networks and concepts/applications of telecommunications engineering.

Cognitive Radio in 4G/5G Wireless Communication Systems

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ISBN: 9781789847062 9781789847079 Year: Pages: 148 DOI: 10.5772/intechopen.74815 Language: English
Publisher: IntechOpen
Subject: Media and communication
Added to DOAB on : 2019-10-03 07:51:52

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The limitation of the radio spectrum and the rapid growth of communication applications make optimal usage of radio resources essential. Cognitive radio (CR) is an attractive research area for 4G/5G wireless communication systems, which enables unlicensed users to access the spectrum. Delivering higher spectral efficiency, supporting the higher number of users, and achieving higher coverage and throughput are the main advantages of CR-based networks compared to conventional ones. The main goal of this book is to provide highlights of current research topics in the field of CR-based systems. The book consists of six chapters in three sections focusing on primary and secondary users, spectrum sensing, spectrum sharing, CR-based IoT, emulation attack, and interference alignment.

Multiplexing

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ISBN: 9781789845686 9781789845693 9781838818685 Year: Pages: 120 DOI: 10.5772/intechopen.78513 Language: English
Publisher: IntechOpen
Subject: Media and communication
Added to DOAB on : 2019-10-03 07:51:53

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Mobile communication has been a critical part of everyday life for the last 30 years. As the demand for wireless communications and higher data rates on these links continues its rapid growth, engineers, scientists, and researchers are required to advance the hardware and software needed to deliver systems for 5G, Massive multiple-input, multiple-output (MIMO), and optical backhaul networks. Now, more than ever before, the fundamental concept of multiplexing is at play. This book is a unique reference for understanding the concept of multiplexing. It provides comprehensive coverage of the practical applications of multiplexing to help the reader better understand its use in these systems. It is a great resource, especially for engineers working on digital signal processing, radio frequency (RF), antenna design, beamforming, and network designs. The book contains chapters on the following topics: • History of multiplexing and how it applies to current technologies; • Different types and applications of multiplexing; • Multiplexing techniques in wireless networks; • Multiple-Input, Multiple-Output Orthogonal Frequency-Division Multiplexing (MIMO-OFD); • Direct-Sequence Optical-Code Division Multiple-Access (DS-OCDMA); • Optically multiplexed systems

Grands projets et innovations technologiques au Canada

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ISBN: 9791036503955 DOI: 10.4000/books.pum.12112 Language: French
Publisher: Presses de l’Université de Montréal
Subject: Science (General)
Added to DOAB on : 2019-12-06 13:15:43
License: OpenEdition Licence for Books

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L'innovation technologique a une histoire. Elle ne surgit pas tout armée du cerveau d'un inventeur de génie, non plus qu'elle ne naît spontanément d'un besoin pressant du marché. Loin des explications simplistes par l'offre et la demande, il faut plutôt chercher à comprendre l'innovation par l'organisation qui tente de la susciter. Dans ce contexte, l'innovation technologique apparaît paradoxalement comme une affaire de gestionnaires — surtout quand elle requiert la mise en œuvre de grands projets, qui impliquent des ressources si considérables que seules des sociétés d'État ou des grandes entreprises peuvent les engager. Philippe Faucher, Kevin Fitzgibbons et Olga Bosak dressent ici un bilan des plus ambitieuses tentatives d'innovation technologique au Canada dans la seconde moitié du XXe siècle. Avec leurs collaborateurs, ils racontent l'histoire des centrales hydro-électriques de Manicouagan et de La Grande, des réacteurs nucléaires CANDU, du chasseur Arrow, du moteur d'avion PT6 et du jet d'affaires Challenger, des équipements de télécommunication mis au point par Northern Telecom et du satellite de communication Hermès. Ils exposent les conflits internes et les arbitrages, les tâtonnements et les initiatives risquées, bref la dynamique institutionnelle des sociétés qui ont pris en charge ces grands projets. Ce livre permet ainsi d'expliquer leurs résultats variables, qui vont de l'abandon pur et simple à des succès éclatants sur la scène internationale, et il montre la diversité des arrangements organisationnels qui permettent de gérer au mieux le risque technologique.

Trends in Research on Microstrip Antennas

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ISBN: 9789535136019 9789535136026 Year: Pages: 158 DOI: 10.5772/65580 Language: English
Publisher: IntechOpen
Subject: Media and communication
Added to DOAB on : 2019-10-03 07:51:50

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The progress in modern tiny multifunctional wireless devices has dramatically increased the demand for microstrip antennas in recent years. Furthermore, in the last few years, such microstrip antennas found numerous applications in both the military and the commercial sectors. Therefore, microstrip patch antenna has become a major focus to the researchers in the field of antenna engineering. In this book, some recent advances in microstrip antennas are presented. This book contains mainly three sections. In the first section, some new approaches to modern analytical techniques rather than the conventional cavity model, transmission line model, or spectral domain analysis have been discussed. In the second section of the book, a light has been showered on some new techniques for bandwidth enhancement of microstrip radiators. In the last section of the book, the recent trends in microstrip antenna research have been showcased. Some newfangled application-oriented approach to this field is vividly discussed. The book&rsquo;s main objective is to facilitate the microstrip antenna researchers for exploring the subject in more vibrant manner and also to revolutionize wireless communications. A sufficient number of topics have been covered, some for the first time in a research handbook. I hope that the book will surely be beneficial for scientists, practicing engineers, and researchers working in the field of microstrip antennas.

The Future of Television - Convergence of Content and Technology

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ISBN: 9781789857535 9781789857542 Year: Pages: 90 DOI: 10.5772/intechopen.75322 Language: English
Publisher: IntechOpen
Subject: Media and communication
Added to DOAB on : 2019-10-03 07:51:52

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This book presents a collection of chapters that focus on the convergence of television today, approached using an interdisciplinary perspective. Clearly, the importance of technological advances describes only one aspect of this evolutionary process. In this book, convergence is also examined from other equally important perspectives, which include a historical case study on convergence and culture-viewer evolution and the changes that interactivity has introduced as opposed to static content. Because this publication focuses on all aspects that transform the medium, users, content, broadcasting, and interactive technology, it becomes evident that convergence is a highly interdisciplinary subject that must always be addressed from various perspectives.

RF Systems, Circuits and Components

Authors: ---
ISBN: 9781789857634 9781789857641 Year: Pages: 128 DOI: 10.5772/intechopen.72548 Language: English
Publisher: IntechOpen
Subject: Media and communication
Added to DOAB on : 2019-10-03 07:51:53

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Radio frequency (RF) refers to frequencies between the upper limit of audio frequencies (> 20 KHz) and the lower limit of infrared frequencies (< 300 GHz). The increased popularity and easy operation of RF devices for different end users and corporate applications such as RFID, Bluetooth, Zigbee and Wi-Fi devices and sensors have raised the demand for small power and less off-chip components that tend to achieve integrated circuits with added security and convenience. Concurrent technologies allow the scientists to reinvent low-power, high-performance and reliable RF systems, circuits and components for many home and commercial applications. The features of RF systems, circuits and components are still being researched and integrated in existing systems to create marketable and potential new RF products for more exciting applications.

Vivre à nu: La surveillance au Canada

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ISBN: 9781927356838 9781927356845 9781927356852 Year: Pages: 287 DOI: 10.15215/aupress/9781927356838.01 Language: French
Publisher: Athabasca University Press
Subject: Social and Public Welfare --- Sociology
Added to DOAB on : 2014-08-04 17:04:53
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Nombre de Canadiens savent que les organismes du gouvernement s’adonnent à de la surveillance de masse en utilisant les données téléphoniques et électroniques. Néanmoins, peu d’entre eux sont réellement conscients de l’influence réelle que cette surveillance a sur presque tous les aspects de leur vie quotidienne. Aujourd’hui, nous ne pouvons faire une promenade au centre-ville, assister à un cours, payer au moyen d’une carte de crédit, monter à bord d’un avion ou faire un appel sans que des données soient capturées et traitées. Où cette information s’en va-t-elle? Qui l’utilise? Qui en sort gagnant et qui en sort perdant? Est-ce que le prix à payer pour utiliser les médias sociaux et d’autres moyens de communication électronique est de desserrer notre emprise sur nos renseignements personnels? Au contraire, devrions-nous nous méfier des systèmes qui nous rendent plus que jamais visibles et, par conséquent, vulnérables aux yeux des autres?Vivre à nu est l’œuvre d’une équipe de recherche multidisciplinaire et explique comment la surveillance s’accroît – pratiquement sans que personne y porte attention – dans toutes les sphères de notre vie. En analysant les principaux moyens employés par le secteur public et le secteur privé pour recueillir, faire le suivi, analyser et échanger des renseignements au sujet des citoyens ordinaires, les auteurs de l’ouvrage ont dégagé neuf grandes tendances dans le traitement des données personnelles. D’ailleurs, collectivement, ces neuf grandes tendances soulèvent des questions pressantes au sujet de la vie privée et de la justice sociale. Cet ouvrage vise non seulement à informer, mais également à changer le cours des choses. Il cible intentionnellement un grand public : les décideurs, les journalistes, les groupes de défense des libertés civiles, les enseignants et, par-dessus tout, les lecteurs du grand public.http://surveillanceincanada.org/

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