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This book covers several essential aspects of pervasive ambient backscatter communication, one of the most cutting-edge technologies for Internet-of-Things. It begins with introductory Part I, which presents visions, basic concepts, principles, and paradigms of ambient backscatter. Also, a taxonomy of state-of-the-art ambient backscatter systems is provided from the perspective of the OSI model. Part II and III study how ambient backscatter systems work on the communication and networking levels. Specifically, Part II discusses in detail how to make use of ambient WiFi signals to provide high-throughput backscatter communications with WiFi 1 (chapter 5), WiFi 2-3 (chapter 4), WiFi 4 (chapter 3), WiFi 5-6 (chapter 6) standards. Further, Part III includes several of the most advanced ambient backscatter network solutions, which are made possible by the first multi-hop backscatter (chapter 7), first backscatter mesh (chapter 8), and multiprotocol backscatter (chapter 9). On top of reliable communication and networks, we propose two novel applications that are thought impossible before, lightweight spatial sound recording over the air (chapter 10) and self-powered wireless wearables for healthcare (chapter 11). To conclude the monograph, we point out critical challenges for realizing the vision of pervasive backscatter IoTs and potential directions of ambient backscatter applications. The book provides an in-depth understanding of ambient backscatter technologies. In particular, we mainly take ubiquitous WiF signals as the communication sources and adopt a top-down approach to introduce three crucial subjects: WiFi backscatter communication, ambient backscatter network, and self-powered application systems. For each subject, we carefully divide it into several relatively independent topics, which come with the latest advances in pervasive backscatter and include extensive discussions of closely related state-of-the-art methodologies.

Computer networks. --- Cloud Computing. --- Internet of things. --- Computer Communication Networks. --- Internet of Things. --- IoT (Computer networks) --- Things, Internet of --- Computer networks --- Embedded Internet devices --- Machine-to-machine communications --- Electronic data processing --- Web services --- Communication systems, Computer --- Computer communication systems --- Data networks, Computer --- ECNs (Electronic communication networks) --- Electronic communication networks --- Networks, Computer --- Teleprocessing networks --- Data transmission systems --- Digital communications --- Electronic systems --- Information networks --- Telecommunication --- Cyberinfrastructure --- Network computers --- Distributed processing

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L'ironie est de retour. Nous assistons aujourd'hui à une production abondante d'œuvres littéraires et artistiques qui sont caractérisées par une "légèreté méditative". Cette ironie est souvent qualifiée d'ironie postmoderne du fait de ses liens avec l'ensemble des symptômes culturels de la société postmoderne. L'ironie postmoderne s'est affirmée dans la création littéraire hexagonale avec l'ascension d'une nouvelle génération d'écrivains des Editions de Minuit dont les plus représentatifs sont Jean Echenoz, Eric Chevillard et Jean-Philippe Toussaint. S'y ajoute Milan Kundera, auteur appartenant à une autre génération et à une autre culture. Chez ces écrivains, l'ironie est non seulement utilisée comme un moyen de mise à distance de l'écriture, elle exprime aussi une vision du monde que l'on pourrait appeler le "désenchantement rieur". Nous creusons dans notre étude le rapport de l'ironie avec la question de l'existence. L'ironie est d'abord une conscience clivée. Cet état de conscience se concrétise dans un mode de discours qui s'offre à la fois comme l'extériorisation de la conscience clivée et un moyen de se procurer une vue d'ensemble. Les questions que nous voulons approfondir dans la présente étude sont les suivantes : où nous situons-nous dans ce long processus de séparation ? que devient le sujet, son action et sa manière d'être dans le monde ? quel est le mode de discours dérivé de la conscience de ce sujet contemporain ? Nous essayons d'y répondre, à partir de nos réflexions sur le phénomène de l'ironie dans la représentation littéraire contemporaine. Irony is back. Today, we are witnessing a burst of literary and artistic productions which are characterized by "thoughtful lightness". The irony is often described as postmodern irony because of his bonds with the entire cultural symptom of the postmodern society. With the rise of writers of a new generation of Editions de Minuit among whom Jean Echenoz, Eric Chevillard and Jean-Philippe Toussaint are predecessors, the postmodern irony has asserted itself in French literary creation to which added Milan Kundera who is a writer of another generation and of another culture. Irony of these writers is not only used as a way to distance from the writing, but also a vision of the world that we would call it the "cheerful disenchantment". We explore the relationship of irony and question of existence in our research. First of all, irony is a cleaved conscience. Such conscience state has come true in a mode of speech as exteriorization of the cleaved conscience and a way of obtaining an overview. In this research, we would like to go into detail the following questions: where shall we be situated is the long process of separation? What have the subject, his action and his way of being become? Which is the mode of speech that is derived of the conscience of this contemporary subject? We try to answer these questions with our reflections brought to the irony phenomenon in the contemporary literary representation.

Ironie --- Satire --- In literature. --- In literature. --- Kundera, Milan, --- Echenoz, Jean, --- Toussaint, Jean-Philippe, --- Chevillard, Éric, --- Thèmes, motifs. --- Themes, motifs. --- Themes, motifs. --- Themes, motifs.