Optical and Digital Techniques for Information Security
Optical and Digital Techniques for Information Security

Author: Bahram Javidi

Publisher: Springer Science & Business Media

Published: 2006-11-22

Total Pages: 356

ISBN-13: 0387250964

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There are wide-ranging implications in information security beyond national defense. Securing our information has implications for virtually all aspects of our lives, including protecting the privacy of our ?nancial transactions and medical records, facilitating all operations of government, maintaining the integrity of national borders, securing important facilities, ensuring the safety of our food and commercial products, protecting the safety of our aviation system—even safeguarding the integrity of our very identity against theft. Information security is a vital element in all of these activities, particularly as information collection and distribution become ever more connected through electronic information delivery systems and commerce. This book encompasses results of research investigation and technologies that can be used to secure, protect, verify, and authenticate objects and inf- mation from theft, counterfeiting, and manipulation by unauthorized persons and agencies. The book has drawn on the diverse expertise in optical sciences and engineering, digital image processing, imaging systems, information p- cessing, mathematical algorithms, quantum optics, computer-based infor- tion systems, sensors, detectors, and biometrics to report novel technologies that can be applied to information-security issues. The book is unique because it has diverse contributions from the ?eld of optics, which is a new emerging technology for security, and digital techniques that are very accessible and can be interfaced with optics to produce highly e?ective security systems.

Digital Techniques for Wideband Receivers
Digital Techniques for Wideband Receivers

Author: James B. Tsui

Publisher: SciTech Publishing

Published: 2004-06-30

Total Pages: 608

ISBN-13: 189112126X

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This book is a current, comprehensive design guide for your digital processing work with today's complex receiver systems. This book brings you up-to-date with the latest information on wideband electronic warfare receivers, the ADC testing procedure, frequency channelization and decoding schemes, and the operation of monobit receivers.

Digital Communication over Fading Channels
Digital Communication over Fading Channels

Author: Marvin K. Simon

Publisher: John Wiley & Sons

Published: 2005-02-11

Total Pages: 936

ISBN-13: 0471715239

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The four short years since Digital Communication over Fading Channels became an instant classic have seen a virtual explosion of significant new work on the subject, both by the authors and by numerous researchers around the world. Foremost among these is a great deal of progress in the area of transmit diversity and space-time coding and the associated multiple input-multiple output (MIMO) channel. This new edition gathers these and other results, previously scattered throughout numerous publications, into a single convenient and informative volume. Like its predecessor, this Second Edition discusses in detail coherent and noncoherent communication systems as well as a large variety of fading channel models typical of communication links found in the real world. Coverage includes single- and multichannel reception and, in the case of the latter, a large variety of diversity types. The moment generating function (MGF)-based approach for performance analysis, introduced by the authors in the first edition and referred to in literally hundreds of publications, still represents the backbone of the book's presentation. Important features of this new edition include: * An all-new, comprehensive chapter on transmit diversity, space-time coding, and the MIMO channel, focusing on performance evaluation * Coverage of new and improved diversity schemes * Performance analyses of previously known schemes in new and different fading scenarios * A new chapter on the outage probability of cellular mobile radio systems * A new chapter on the capacity of fading channels * And much more Digital Communication over Fading Channels, Second Edition is an indispensable resource for graduate students, researchers investigating these systems, and practicing engineers responsible for evaluating their performance.

Digital Techniques for Heritage Presentation and Preservation
Digital Techniques for Heritage Presentation and Preservation

Author: Jayanta Mukhopadhyay

Publisher: Springer Nature

Published: 2021-03-17

Total Pages: 272

ISBN-13: 3030579077

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This book describes various new computer based approaches which can be exploited for the (digital) reconstruction, recognition, restoration, presentation and classification of digital heritage. They are based on applications of virtual reality, augmented reality and artificial intelligence, to be used for storing and retrieving of historical artifacts, digital reconstruction, or virtual viewing. The book is divided into three sections: “Classification of Heritage Data” presents chapters covering various domains and aspects including text categorization, image retrieval and classification, and object spotting in historical documents. Next, in “Detection and Recognition of Digital Heritage Artifacts”, techniques like neural networks or deep learning are used for the restoration of degraded heritage documents, Tamil Palm Leaf Characters recognition, the reconstruction of heritage images, and the selection of suitable images for 3D reconstruction and classification of Indian land mark heritage images. Lastly, “Applications of Modern Tools in Digital Heritage” highlights some example applications for dance transcription, architectural geometry of early temples by digital reconstruction, and computer vision based techniques for collecting and integrating knowledge on flora. This book is mainly written for researchers and graduate students in digital preservation and heritage, or computer scientists looking for applications of virtual reality, computer vision, and artificial intelligence techniques.

DIgital Fabrications
DIgital Fabrications

Author: Lisa Iwamoto

Publisher: Princeton Architectural Press

Published: 2013-07-02

Total Pages: 146

ISBN-13: 1616891785

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Digital Fabrications, the second volume in our new Architecture Briefs series, celebrates the design ingenuity made possible by digital fabrication techniques. Author Lisa Iwamoto explores the methods architects use to calibrate digital designs with physical forms. The book is organized according to five types of digital fabrication techniques: tessellating, sectioning, folding, contouring, and forming. Projects are shown both in their finished forms and in working drawings, templates, and prototypes, allowing the reader to watch the process of each fantastic construction unfold. Digital Fabrications presents projects designed and built by emerging practices that pioneer techniques and experiment with fabrication processes on a small scale with a do-it-yourself attitude. Featured architects include AEDS/Ammar Eloueini, Atelier Manferdini, Brennan Buck, MOS, Office dA, Florencia Pita/MOD, Mafoomby, URBAN A+O, SYSTEMarchitects, Andrew Kudless/Matsys, IwamotoScott, Atelier Hitoshi Abe, Chris Bosse, Tom Wiscombe/EMERGENT, Thom Faulders Architecture, Jeremy Ficca, SPAN, GNUFORM, Heather Roberge, PATTERNS, Ruy Klein, and servo.

Digital Design Techniques and Exercises
Digital Design Techniques and Exercises

Author: Vaibbhav Taraate

Publisher: Springer Nature

Published: 2021-12-09

Total Pages: 204

ISBN-13: 9811659559

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This book describes digital design techniques with exercises. The concepts and exercises discussed are useful to design digital logic from a set of given specifications. Looking at current trends of miniaturization, the contents provide practical information on the issues in digital design and various design optimization and performance improvement techniques at logic level. The book explains how to design using digital logic elements and how to improve design performance. The book also covers data and control path design strategies, architecture design strategies, multiple clock domain design and exercises , low-power design strategies and solutions at the architecture and logic-design level. The book covers 60 exercises with solutions and will be useful to engineers during the architecture and logic design phase. The contents of this book prove useful to hardware engineers, logic design engineers, students, professionals and hobbyists looking to learn and use the digital design techniques during various phases of design.

Digital Logic Techniques
Digital Logic Techniques

Author: John Stonham

Publisher: Routledge

Published: 2017-11-22

Total Pages: 218

ISBN-13: 1351454994

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The third edition of Digital Logic Techniques provides a clear and comprehensive treatment of the representation of data, operations on data, combinational logic design, sequential logic, computer architecture, and practical digital circuits. A wealth of exercises and worked examples in each chapter give students valuable experience in applying the concepts and techniques discussed.Beginning with an objective comparison between analogue and digital representation of data, the author presents the Boolean algebra framework for digital electronics, develops combinational logic design from first principles, and presents cellular logic as an alternative structure more relevant than canonical forms to VLSI implementation. He then addresses sequential logic design and develops a strategy for designing finite state machines, giving students a solid foundation for more advanced studies in automata theory.The second half of the book focuses on the digital system as an entity. Here the author examines the implementation of logic systems in programmable hardware, outlines the specification of a system, explores arithmetic processors, and elucidates fault diagnosis. The final chapter examines the electrical properties of logic components, compares the different logic families, and highlights the problems that can arise in constructing practical hardware systems.

Synchronization Techniques for Digital Receivers
Synchronization Techniques for Digital Receivers

Author: Umberto Mengali

Publisher: Springer Science & Business Media

Published: 2013-11-11

Total Pages: 532

ISBN-13: 1489918078

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Synchronization is a critical function in digital communications; its failures may have catastrophic effects on the transmission system performance. Furthermore, synchronization circuits comprehend such a large part of the receiver hardware that their implementation has a substantial impact on the overall costs. For these reasons design engineers are particularly concerned with the development of new and more efficient synchronization structures. Unfortunately, the advent of digital VLSI technology has radically affected modem design rules, to a point that most analog techniques employed so far have become totally obsolete. Although digital synchronization methods are well established by now in the literature, they only appear in the form of technical papers, often concentrating on specific performance or implementation issues. As a consequence they are hardly useful to give a unified view of an otherwise seemingly heterogeneous field. It is widely recognized that a fundamental understanding of digital synchronization can only be reached by providing the designer with a solid theoretical framework, or else he will not know where to adjust his methods when he attempts to apply them to new situations. The task of the present book is just to develop such a framework.

Digital Technology
Digital Technology

Author: Virendra Kumar

Publisher: New Age International

Published: 1995

Total Pages: 108

ISBN-13: 9788122407884

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This Book Digital Technology: Principles And Practice Has Been Designed To Provide Comprehensive And In-Depth Coverage Of All Important Aspects Of Digital Principles. It Is Primarily Intended For Students Who Wish To Pursue A Career In Digital Technology Systems And Applications.The Book Begins With A Discussion Of Various Number Systems And Their Application In Arithmetic Operations. Following Logic Gates, The Application Of Boolean Algebra And Karnaugh Map Techniques In Solving Digital Problems And Designing Digital Systems Is Taken Up Next.As Multivibrators Form A Very Basic Device In Digital Systems, Bitsables, Astables And Monostables (Retriggerable And Non-Retriggerable) Considerable Attention Has Been Paid To Their Operation Characteristics And Applications.The Chapter On Arithmetic Logic Circuits Deals With All Aspects Of Arithmetic Operations Including Their Design And Operation. An Arithmetic Logic Unit Has Also Been Considered.As Counters Are Invariably Required In Almost All Digital Systems, Considerable Attention Has Been Paid To The Design And Operation Of Several Types Of Counters, Including Ring And Johnson Counters. Since Registers Play An Equally Important Role They Have Also Been Discussed.Semiconductor Memories Are The Cornerstone Of Logic Systems And Have Been Discussed In Depth. Analog To Digital Converters And Digital To Analog Converters Being Of Equal Importance Particularly In Music Systems Are Also Discussed.Among The Many Combinational Devices, Too Numerous To Mention, Those That Have Received Special Attention Are Multiplexers, Encoders Decorders Demultiplexers And Display Devices. Interfacing Problems Which Are Encountered When Logic Devices Of Different Families Are Used In The Same Logic Systems Have Been Discussed In Detail.