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This book describes innovative design solutions for radio-frequency identification (RFID) tags and antennas. Focusing mainly on passive ultra-high-frequency (UHF)-RFID tag antennas, it examines novel approaches based on the use of metamaterial-inspired resonators and other resonant structures as radiating elements. It also offers an exhaustive analysis of the radiation properties of several metamaterial-inspired resonators such as the split ring resonator (SRR) and related structures. Further, it discusses in detail an innovative technology for the RFID tagging of optical discs, which has demonstrated a significant improvement over the state of the art and resulted in a patent. By covering the entire research cycle of theory, design/simulation and fabrication/evaluation of RFID tags and antennas, while also reporting on cutting-edge technologies, the book provides graduate students, researchers and practitioners alike with a comprehensive and timely overview of RFID systems, and a closer look at several radiating structures.
ISAmI is the International Symposium on Ambient Intelligence, aiming to bring together researchers from various disciplines that constitute the scientific field of Ambient Intelligence to present and discuss the latest results, new ideas, projects and lessons obtained from recent experiences in building AmI systems. This volume presents the papers that have been accepted in this first edition. These papers reports on innovative results and advances achieved recently in this area.
This book presents and discusses alternatives to ordinary transmission lines for the design and implementation of advanced RF/microwave components in planar technology. This book is devoted to the analysis, study and applications of artificial transmission lines mostly implemented by means of a host line conveniently modified (e.g., with modulation of transverse dimensions, with etched patterns in the metallic layers, etc.) or with reactive loading, in order to achieve novel device functionalities, superior performance, and/or reduced size. The author begins with an introductory chapter dedicated to the fundamentals of planar transmission lines. Chapter 2 is focused on artificial transmissio...
Positioning itself at the common boundaries of several disciplines, this work provides new perspectives on modern nanoscale problems where fundamental science meets technology and computer modeling. In addition to well-known computational techniques such as finite-difference schemes and Ewald summation, the book presents a new finite-difference calculus of Flexible Local Approximation Methods (FLAME) that qualitatively improves the numerical accuracy in a variety of problems.
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Siamo a Firenze nel 1921, le squadracce fasciste imperversano in città e si organizzano i gruppi di autodifesa socialisti e comunisti. Gli scontri sono all'ordine del giorno e il giovane fascista Giovanni Berta viene prima malmenato e poi gettato da un ponte nell'Arno. Immediatamente i fascisti trasformarono questo fatto in un martirio, enfatizzando la brutalità e la ferocia delle masse operaie. A queste dovevano porre un argine l'indomita fede e il senso di sacrificio dei sostenitori del fascismo. Così Giovanni Berta fu ricordato in tutta l'Italia fascista e nelle colonie attraverso l'intestazione di strade, monumenti e perfino del nuovo stadio di calcio di Firenze. Articoli di giornali ...