радиотехника (страница 3)

Автор: Elie Karam

Купить

Автор: G. Keith Cambron

The telecommunications industry has advanced in rapid, significant and unpredictable ways into the 21st century. Global Networks: Design, Engineering and Operation guides the global industry and academia even further by providing an in-depth look at the current and developing trends, as well as examining the complex issues of developing, introducing, and managing cutting-edge telecommunications technologies. The author draws upon his considerable experience in the telecommunications industry to educate engineers designing equipment and systems on the hardware and software features essential to fault tolerant operation. He describes how to design networks that are fault tolerant and global in scope; how to identify best engineering and operations practices; and examines the role of technology labs in carrier networks. Software and hardware engineering practices are covered in depth. Hardware and software designs are explained with an emphasis on application and interaction of craft and operators with equipment and systems. The author proposes that equipment, systems and network designs should be integrated with the engineering and operations teams that run them. Practice, experience and a historical background are used to describe which designs and technologies fit which network services and applications. Global Networks is a complete and thorough assessment of the communications industry today, written by an author of international renown. Key features: Comprehensive treatment of the key theories and technologies associated with the design of modern communications networks, including equipment, systems and network design Coverage of equipment and software design, mobile networks, integration and the characteristics of large network outages Written in an accessible style and fully illustrated, it offers a complete and up-to-date picture of communications technologies from initial design through to application Includes a section on future challenges such as the Exabyte traffic growth and an assessment of the dual roles of IPV4 and IPV6

Купить

Автор: Jaroslav Hašek

Исполнители: Adrian Lukis

Купить

Автор: Группа авторов

With contributions from key researchers across the globe, and edited by internationally recognized leading academics, Gravel-bed Rivers: Processes and Disasters presents the definitive review of current knowledge of gravel-bed rivers. Continuing an established and successful series of scholarly reports, this book consists of the papers presented at the 8th International Gravel-bed Rivers Workshop. Focusing on all the recent progress that has been made in the field, subjects covered include flow, physical modeling, sediment transport theory, techniques and instrumentation, morphodynamics and ecological topics, with special attention given to aspects of disasters relevant to sediment supply and integrated river management. This up-to-date compendium is essential reading for geomorphologists, river engineers and ecologists, river managers, fluvial sedimentologists and advanced students in these fields.

Купить

Автор: Группа авторов

This book provides a comprehensive view of green communications considering all areas of ICT including wireless and wired networks. It analyses particular concepts and practices, addressing holistic approaches in future networks considering a system perspective. It makes full use of tables, illustrations, performance graphs, case studies and examples making it accessible for a wide audience.

Купить

Автор: David Held

The issues that increasingly dominate the 21st century cannot be solved by any single country acting alone, no matter how powerful. To manage the global economy, prevent runaway environmental destruction, reign in nuclear proliferation, or confront other global challenges, we must cooperate. But at the same time, our tools for global policymaking – chiefly state-to-state negotiations over treaties and international institutions – have broken down. The result is gridlock, which manifests across areas via a number of common mechanisms. The rise of new powers representing a more diverse array of interests makes agreement more difficult. The problems themselves have also grown harder as global policy issues penetrate ever more deeply into core domestic concerns. Existing institutions, created for a different world, also lock-in pathological decision-making procedures and render the field ever more complex. All of these processes – in part a function of previous, successful efforts at cooperation – have led global cooperation to fail us even as we need it most. Ranging over the main areas of global concern, from security to the global economy and the environment, this book examines these mechanisms of gridlock and pathways beyond them. It is written in a highly accessible way, making it relevant not only to students of politics and international relations but also to a wider general readership.

Купить

Автор: H. Ward Silver

Respond to the call of ham radio  Despite its old-school reputation, amateur radio is on the rise, and the airwaves are busier than ever. That’s no surprise: being a ham is a lot of fun, providing an independent way to keep in touch with friends, family, and new acquaintances around the world—and even beyond with its ability to connect with the International Space Station! Hams are also good in a crisis, keeping communications alive and crackling during extreme weather events and loss of communications until regular systems like cell phones and the internet are restored. Additionally, it’s enjoyable for good, old-fashioned tech geek reasons—fiddling with circuits and bouncing signals off the ionosphere just happens to give a lot of us a buzz!  If one or more of these benefits is of interest to you, then good news: the new edition of  Ham Radio For Dummies  covers them all! In his signature friendly style, longtime ham Ward Silver (Call Sign N?AX)—contributing editor with the American Radio Relay League—patches you in on everything from getting the right equipment and building your station (it doesn’t have to be expensive) to the intricacies of Morse code and Ohm’s law. In addition, he coaches you on how to prepare for the FCC-mandated licensing exam and tunes you up for ultimate glory in the ham radio hall of fame as a Radiosport competitor! With this book, you’ll learn to:  Set up and organize your station Communicate with people around the world Prep for and pass the FCC exam Tune into the latest tech, such as digital mode operating Whether you’re looking to join a public service club or want the latest tips on the cutting edge of ham technology, this is the perfect reference for newbies and experts alike—and will keep you happily hamming it up for years!

Купить

Автор: H. Ward Silver

Купить

Автор: Уильям Шекспир

Michael Sheen stars as Hamlet, with Kenneth Cranham as Claudius, Juliet Stevenson as Gertrude and Ellie Beaven as Ophelia in the best-known and most powerful tragedy of modern times.   BBC Radio has a unique heritage when it comes to Shakespeare. Since 1923, when the newly formed company broadcast its first full-length play, generations of actors and producers have honed and perfected the craft of making Shakespeare to be heard.   In the acclaimed BBC Radio Shakespeare series, each play is introduced by Richard Eyre, former Director of the Royal National Theatre.   Revitalised, original and comprehensive, this is Shakespeare for the new millennium.

Исполнители: Juliet Stevenson

Купить

Автор: Dirk P. Kroese

A comprehensive overview of Monte Carlo simulation that explores the latest topics, techniques, and real-world applications More and more of today’s numerical problems found in engineering and finance are solved through Monte Carlo methods. The heightened popularity of these methods and their continuing development makes it important for researchers to have a comprehensive understanding of the Monte Carlo approach. Handbook of Monte Carlo Methods provides the theory, algorithms, and applications that helps provide a thorough understanding of the emerging dynamics of this rapidly-growing field. The authors begin with a discussion of fundamentals such as how to generate random numbers on a computer. Subsequent chapters discuss key Monte Carlo topics and methods, including: Random variable and stochastic process generation Markov chain Monte Carlo, featuring key algorithms such as the Metropolis-Hastings method, the Gibbs sampler, and hit-and-run Discrete-event simulation Techniques for the statistical analysis of simulation data including the delta method, steady-state estimation, and kernel density estimation Variance reduction, including importance sampling, latin hypercube sampling, and conditional Monte Carlo Estimation of derivatives and sensitivity analysis Advanced topics including cross-entropy, rare events, kernel density estimation, quasi Monte Carlo, particle systems, and randomized optimization The presented theoretical concepts are illustrated with worked examples that use MATLAB®, a related Web site houses the MATLAB® code, allowing readers to work hands-on with the material and also features the author's own lecture notes on Monte Carlo methods. Detailed appendices provide background material on probability theory, stochastic processes, and mathematical statistics as well as the key optimization concepts and techniques that are relevant to Monte Carlo simulation. Handbook of Monte Carlo Methods is an excellent reference for applied statisticians and practitioners working in the fields of engineering and finance who use or would like to learn how to use Monte Carlo in their research. It is also a suitable supplement for courses on Monte Carlo methods and computational statistics at the upper-undergraduate and graduate levels.

Купить

Автор: Группа авторов

Multiphase polymeric systems include a wide range of materials such as composites, blends, alloys, gels, and interpenetrating polymer networks (IPNs). A one-stop reference on multiphase polymer systems, this book fully covers the preparation, properties, and applications of advanced multiphase systems from macro to nano scales. Edited by well-respected academics in the field of multiphase polymer systems, the book includes contributions from leading international experts. An essential resource for plastic and rubber technologists, filler specialists and researchers in fields studying thermal and electrical properties.

Купить

Автор: Joydeep Acharya

A comprehensive summary of theoretical and practical developments in LTE Heterogeneous Networks The last decade has witnessed the proliferation of mobile broadband data and the trend is likely to increase in the coming years. Current cellular networks are ill equipped to deal with this surge in demand. To satisfy user demand and maximize profits, a new paradigm to operate networks is needed. Heterogeneous networks, that deploy an overlay of small cells with limited coverage and transmit power, over a macro coverage area is the solution by providing capacity and coverage where it is needed. This book presents a comprehensive overview of small cell based heterogeneous networks within the framework of 3GPP LTE-Advanced which is the major enabler of current and future heterogeneous networks. The book first establishes the basics of LTE standards 8 -10. Wherever relevant, the underlying theory of wireless communications is explained and the signaling and protocol aspects of LTE Releases 8-10 are presented. Next the book presents a systematic study of the inter cell interference (eICIC and FeICIC) mechanisms that have been standardized in LTE releases 10 and 11 to mitigate the interference arising in heterogeneous networks. From simple blank subframe design and implementation, the book discusses more advanced transceiver signal processing and carrier aggregation (CA) based mechanisms to improve performance. Besides data, control channel enhancements such as enhanced PDCCH (ePDCCH) are also discussed. Subsequently the book discusses the possibility of base stations being allowed to coordinate to manage interference. This technique, called CoMP, has the potential of vastly improving network performance. However several practical challenges first have to be overcome before this potential can be realized. The book presents the different CoMP categories introduced in LTE release 11, the required signal processing and the changes that were introduced in Release-11 for supporting CoMP. The book then presents the state of the art developments in heterogeneous networks that are currently taking place in 3GPP with the initiation of Release 12. A whole array of new technologies have been introduced such as dynamic switching of small cells, new carrier types with reduced control signaling, dynamic reconfiguration of TDD-LTE, joint configuration of TDD and FDD via carrier aggregation and lastly advanced MIMO signal processing with three dimensional beamforming. All these technologies will work in unison leading to efficient operations of small cells. The authors thus comprehensively summarize the advances in heterogeneous networks over the last couple of years as reflected in various LTE releases and then look ahead at what to expect in the future. Fully illustrated throughout and with an accompanying website including Matlab code for simulating heterogeneous networks, LTE channel models, and References to 3GPP specifications, contributions, and updates on recent standardization activities. The authors, being involved in LTE standardization, are well placed to give an excellent view on this topic, including valuable background and design rationale. A comprehensive summary of wireless communications theory and practical developments in LTE heterogeneous networks. Authors are experts in this field and are active members in standardization proceedings, enabling up-to-date coverage of current developments Multiple case studies explain network design optimization of various heterogeneous network deployments. Accompanying website includes Matlab code for simulating heterogeneous networks, LTE channel models, and References to 3GPP specifications, contributions, and updates on recent standardization activities Essential reading for Engineers and practitioners in wireless industry.

Купить

Автор: Daniel Minoli

Купить

Автор: Дуглас Адамс

Don't panic! The Hitchhiker's saga continues with a full-cast dramatisation of Life, the Universe and Everything, the third book in Douglas Adams's famous 'trilogy in five parts''The pitch here at Lord's is blackened, lightly smoking down towards square leg – and two men have just materialised on a Chesterfield sofa…'And so the scene is set for the Tertiary Phase of The Hitchhiker's Guide to the Galaxy, the phenomenon which began life as a BBC radio series and went on to spawn a bestselling series of novels. With this full-cast radio dramatisation, the Guide returns to its original medium with its original cast.Stranded on prehistoric Earth, Arthur Dent and Ford Prefect find escape in the form of a time-travelling sofa. But as eleven homicidal, bat-wielding robots proceed to blow up Lord's Cricket Ground, it seems that Arthur is far from Home and Dry. In fact, he is not even Home and Vigorously Towelling Himself Off. Soon he is on an explosive quest to save the Universe, equipped with only a rabbit bone, a worn dressing gown, and a spaceship which looks remarkably like an Italian bistro.Simon Jones returns as Arthur, Geoffrey McGivern as Ford, Susan Sheridan as Trillian, Mark Wing-Davey as Zaphod Beeblebrox, and Stephen Moore as Marvin the Paranoid Android. William Franklyn is the Book, the late Douglas Adams himself appears in the role of Agrajag, and guest stars include Richard Griffiths, Chris Langham, Joanna Lumley and Leslie Phillips.This extended edition features 20 minutes of material not heard on BBC Radio 4.

Серия: Hitchhiker's Guide (radio plays)

Исполнители: Simon Jones

Купить

Автор: Дуглас Адамс

A dynamic remastering of the second BBC Radio 4 full-cast serial – 'Fit the Seventh' to 'Fit the Twelfth' – which spawned a phenomenal hitchhiking legend.   The second original series of 'The Hitchhiker's Guide to the Galaxy' has been remastered by Dirk Maggs (director of the Tertiary, Quandary and Quintessential Phases) to give a full, vibrant sound, now with Philip Pope's version of the familiar theme tune and specially re-recorded announcements by John Marsh.   Stranded on Prehistoric Earth since the end of the first series, Arthur Dent and Ford Prefect are once again trying to hitch their way off the planet. Zaphod finds his visit to the offices of the Guide rudely interrupted by Frogstar fighters, who further threaten to feed him to the Total Perspective Vortex. Eventually reunited, the three fetch up on the planet Brontitall and discover the indigenous species in something of a flap. Arthur meets Lintilla (several of her), Marvin gets to be a hero once again, and there is a meeting with the Man in the Shack who apparently runs the Universe…  Peter Jones, Simon Jones, Geoffrey McGivern, Mark Wing-Davey, Stephen Moore and a full supporting cast star in these BBC Radio 4 episodes. Also included is a bonus 50-minute interview with Douglas Adams – who died in 2001 – in which he discusses his career and work.

Серия: Hitchhiker's Guide (radio plays)

Исполнители: Peter Jones

Купить

Автор: Дуглас Адамс

Don't panic! The Hitchhiker's saga returns once again with a full-cast dramatisation of Mostly Harmless, the fifth book in Douglas Adams's famous 'trilogy in five parts'.'A radio event… the great original cast has been reassembled'. Gillian Reynolds, The Daily TelegraphWhile frequent flyer Arthur Dent searches the universe for his lost love, Ford Prefect discovers a disturbing blast from the past at The Hitchhiker's Guide HQ. Meanwhile, on one of many versions of Earth, a blonder, more American Trillian gets tangled up with a party of lost aliens having an identity crisis. And just when Arthur thinks he has found his true vocation on the backwater planet of Lamuella, the original Trillian turns up with more than a little spanner in the works. A stolen ship, a dramatic stampede and a new and sinister Guide lead to a race to save the Earth … again. But this time, will they succeed?Simon Jones returns as Arthur, Geoffrey McGivern as Ford, Mark Wing-Davey as Zaphod Beeblebrox, Susan Sheridan as Trillian, Sandra Dickinson as Tricia McMillan, and Stephen Moore as Marvin. William Franklyn is the Book, Rula Lenska is also the Book and Samantha Beart is Random. Guest stars include Miriam Margolyes, Griff Rhys Jones, John Challis, Roy Hudd, Saeed Jaffrey, and Jonathan Pryce.This extended edition features 40 minutes of material not heard on BBC Radio 4.

Серия: Hitchhiker's Guide (radio plays)

Исполнители: Simon Jones

Купить

Автор: David Yeomans

Structural engineering is central to the design of a building. How the building behaves when subjected to various forces – the weight of the materials used to build it, the weight of the occupants or the traffic it carries, the force of the wind etc – is fundamental to its stability. The alliance between architecture and structural engineering is therefore critical to the successful design and completion of the buildings and infrastructure that surrounds us. Yet structure is often cloaked in mathematics which many architects and surveyors find difficult to understand. How Structures Work has been written to explain the behaviour of structures in a clear way without resorting to complex mathematics. This new edition includes a new chapter on construction materials, and significant revisions to, and reordering of the existing chapters. It is aimed at all who require a good qualitative understanding of structures and their behaviour, and as such will be of benefit to students of architecture, architectural history, building surveying and civil engineering. The straightforward, non-mathematical approach ensures it will also be suitable for a wider audience including building administrators, archaeologists and the interested layman.

Купить

Автор: Павел Кушелев

И снова Павла Кушелева в поездках подстерегают опасности. Здоровенные голые мужики BDSM-кофеен Сан-Франа сменились сербским футбольным фанатьем на главной площади Мюнхена, а речь в этом выпуске пойдёт о непростой судьбе дорогущего HUAWEI Mate 30 без сервисов Google, прелестях свежего iPhone и заслугах Сергеев Семеновичей немецких городов.

Серия: О чём речь

Купить

Автор: Павел Кушелев

Павел Кушелев, журналист России 24, побывал в Берлине на выставке потребительской электроники IFA, а так же рассказывает, чем его удивил Берлин в этом году. Видео версия выпуска доступна так же на YouTube канале.

Серия: О чём речь

Купить

Автор: Группа авторов

Купить

Автор: Wilfried R?hse

Offering invaluable insights from a chemist with over 35 years experience in the industry, this practical guide incorporates numerous practical examples and case studies to explain the concepts included here. The author explains the processes involved in product design, how to set up experiments, and ultimately how to scale-up. Among the host of topics covered is a discussion of recent advances in the fundamentals and innovative technologies leading to new and improved products. Industrial Product Design of Solids and Liquids: A Practical Guide is essential reading for the pharmaceutical, cosmetics and personal care, food, fragrance, paints, plastics and agricultural industries.

Купить

Автор: Yang Sun Yang

Discover how the Internet of Things will change the information and communication technology industry in the next decade  The Intelligent Internet of Things  explores a unique type of Internet of Things (IoT) architecture, for example, the Web of Things (WoT) with its open character that breaks the barriers among various IoT vertical applications. The authors—noted experts on the topic—examine and compare key technologies from physical to platform level, especially the Narrow Band Internet of Things (NB-IoT) technology. They discuss applications with different data transmission requirements that are typical to IoT. The text also describes the requirements of WoT applications on 5G and includes detailed information on WoT technologies. The Intelligent Internet of Things  examines   three typical WoT applications: the monitoring application of south-to-north water diversion projects; smart driving applications; and network optimization applications. In addition, the text explores testing and authentication of IoT key technologies, with the required equipment, platform, and outdoor environment development. This important book: Provides information on what IoT/WoT is, when to use it, how to provide IoT services with certain technologies, and more Discusses restful architecture, main protocols (ZigBee, 6lowpan, CoAP, HTML5) Explores key technologies on different layers (sensing, gathering, application) Examines how IoT will change the information and communication technology industry Written for professionals working in IoT development, management and big data analytics,  Intelligent Internet of Things  offers an overview of IoT architecture, key technology, current applications and future development of the technology.

Купить

Автор: Yang Sun Yang

Купить

Автор: Группа авторов

Купить

Автор: Группа авторов

Interpretation Basics of Cone Beam Computed Tomography, Second Edition  is a practical identification guide for interpreting CBCT findings in dental practice. Offering multiple high-quality images for each example provided, this easy-to-use guide is designed for those new to CBCT scans as well as more experienced practitioners in need of a reference tool of normal anatomy, common anatomical variants, and incidental findings.  Extensively revised throughout, the Second Edition features a brand-new chapter on findings of the maxilla and mandible, and additional incidental findings and common anatomical variants. Every chapter in the book now includes sections covering anatomic variations, developmental anomalies, pathosis, and other considerations. All information has been carefully reviewed and updated to incorporate recent research in the field and reflect newer guidelines from various specialty organizations. This new edition:  Enables rapid reference to common CBCT findings, with multiple images for each finding Features a streamlined framework that makes relevant information easier to find and apply in dental practice Offers hundreds of new images to aid in correctly identifying findings Contains new and updated content, including expanded coverage of CBCT and implants Provides sample reports and explains how they are used in day-to-day clinical practice  Interpretation Basics of Cone Beam Computed Tomography, Second Edition  remains a must-have resource for all dental practitioner and specialists who use CBCT, dental students in radiology interpretation courses, and residents beginning to use CBCT in their specialty.

Купить

Автор: Thomas A. Lipo

The only book on the market that emphasizes machine design beyond the basic principles of AC and DC machine behavior AC electrical machine design is a key skill set for developing competitive electric motors and generators for applications in industry, aerospace, and defense. This book presents a thorough treatment of AC machine design, starting from basic electromagnetic principles and continuing through the various design aspects of an induction machine. Introduction to AC Machine Design includes one chapter each on the design of permanent magnet machines, synchronous machines, and thermal design. It also offers a basic treatment of the use of finite elements to compute the magnetic field within a machine without interfering with the initial comprehension of the core subject matter. Based on the author’s notes, as well as after years of classroom instruction, Introduction to AC Machine Design: Brings to light more advanced principles of machine design—not just the basic principles of AC and DC machine behavior Introduces electrical machine design to neophytes while also being a resource for experienced designers Fully examines AC machine design, beginning with basic electromagnetic principles Covers the many facets of the induction machine design Introduction to AC Machine Design is an important text for graduate school students studying the design of electrical machinery, and it will be of great interest to manufacturers of electrical machinery.

Купить

Автор: Anna Forster

Explores real-world wireless sensor network development, deployment, and applications Presents state-of-the-art protocols and algorithms Includes end-of-chapter summaries, exercises, and references For students, there are hardware overviews, reading links, programming examples, and tests available at [website] For Instructors, there are PowerPoint slides and solutions available at [website]

Купить

Автор: P.G. Wodehouse

A BBC Radio 4 full-cast dramatisation starring Michael Hordern as Jeeves and Richard Briers as Wooster.  Steeple Bumphleigh is the sort of picturesque place where you can't throw a brick without hitting a honeysuckled cottage or beaning an apple-cheeked villager. But for Bertie Wooster, it is a place to be avoided, containing not only the appalling Aunt Agatha but also her husband, the terrifying Lord Worplesdon.   So when a certain amount of familial arm-twisting is applied, Bertie heads for the sticks in fear and trepidation despite the support of the irreplaceable Jeeves.   Still, there are good deeds to be done, like extricating 'Stilton' Cheesewright from the clutches of Florence Craye, a girl from whom Bertie himself only escaped by the slimmest of cat's whiskers.   But even Bertie is hideously unaware of the perils which lie in wait before the (accidentally) happiest of endings.

Исполнители: Richard Briers

Купить

Автор: Группа авторов

From the editors of the highly successful LTE for UMTS: Evolution to LTE-Advanced, this new book examines the main technical enhancements brought by LTE-Advanced, thoroughly covering 3GPP Release 10 specifications and the main items in Release 11. Using illustrations, graphs and real-life scenarios, the authors systematically lead readers through this cutting-edge topic to provide an outlook on existing technologies as well as possible future developments. The book is structured to follow the main technical areas that will be enhanced by the LTE-Advanced specifications. The main topics covered include: Carrier Aggregation; Multiantenna MIMO Transmission, Heterogeneous Networks; Coordinated Multipoint Transmission (CoMP); Relay nodes; 3GPP milestones and IMT-Advanced process in ITU-R; and LTE-Advanced Performance Evaluation. Key features: Leading author and editor team bring their expertise to the next generation of LTE technology Includes tables, figures and plots illustrating the concepts or simulation results, to aid understanding of the topic, and enabling readers to be ahead of the technological advances

Купить

Автор: Fr?d?ric Launay

Купить

Автор: J?rgen Merkel

The aim of the book is to educate government agencies, operators, vendors and other regulatory institutions how LTE can be deployed to serve public safety market and offer regulatory / public safety features. It is written in such a way that it can be understood by both technical and non-technical personnel with just introductory knowledge in wireless communication. Some sections and chapters about public safety services offered by LTE network are intended to be understood by anyone with no knowledge in wireless communication.

Купить

Автор: Группа авторов

Covering the key functional areas of LTE Self-Organising Networks (SON), this book introduces the topic at an advanced level before examining the state-of-the-art concepts. The required background on LTE network scenarios, technologies and general SON concepts is first given to allow readers with basic knowledge of mobile networks to understand the detailed discussion of key SON functional areas (self-configuration, -optimisation, -healing). Later, the book provides details and references for advanced readers familiar with LTE and SON, including the latest status of 3GPP standardisation. Based on the defined next generation mobile networks (NGMN) and 3GPP SON use cases, the book elaborates to give the full picture of a SON-enabled system including its enabling technologies, architecture and operation. ”Heterogeneous networks” including different cell hierarchy levels and multiple radio access technologies as a new driver for SON are also discussed. Introduces the functional areas of LTE SON (self-optimisation, -configuration and –healing) and its standardisation, also giving NGMN and 3GPP use cases Explains the drivers, requirements, challenges, enabling technologies and architectures for a SON-enabled system Covers multi-technology (2G/3G) aspects as well as core network and end-to-end operational aspects Written by experts who have been contributing to the development and standardisation of the LTE self-organising networks concept since its inception Examines the impact of new network architectures (“Heterogeneous Networks”) to network operation, for example multiple cell layers and radio access technologies

Купить

Автор: Ralf Kreher

This extensively updated second edition of LTE Signaling, Troubleshooting and Performance Measurement describes the LTE signaling protocols and procedures for the third generation of mobile communications and beyond. It is one of the few books available that explain the LTE signaling messages, procedures and measurements down to the bit & byte level, and all trace examples are taken for a real lab and field trial traces. This book covers the crucial key performance indicators (KPI) to be measured during field trials and deployment phase of new LTE networks. It describes how statistic values can be aggregated and evaluated, and how the network can be optimized during the first stages of deployment, using dedicated examples to enhance understanding. Written by experts in the field of mobile communications, this book systematically describes the most recent LTE signaling procedures, explaining how to identify and troubleshoot abnormal network behavior and common failure causes, as well as describing the normal signaling procedures. This is a unique feature of the book, allowing readers to understand the root cause analysis of problems related to signaling procedures. This book will be especially useful for network operators and equipment manufacturers; engineers; technicians; network planners; developers; researchers; designers; testing personnel and project managers; consulting and training companies; standardization bodies.

Купить

Автор: Группа авторов

LTE network capabilities are enhanced with small cell deployment, with optimization and with new 3GPP features. LTE networks are getting high loaded which calls for more advanced optimization. Small cells have been discussed in the communications industry for many years, but their true deployment is happening now. New 3GPP features in Release 12 and 13 further push LTE network performance. This timely book addresses R&D and standardization activities on LTE small cells and network optimization, focusing on 3GPP evolution to Release 13. It covers LTE small cells from specification to products and field results; Latest 3GPP evolution to Release 13; and LTE optimization and learnings from the field.

Купить

Автор: Abdelhamid Mellouk

Resource allocation and power optimization is a new challenge in multimedia services in cellular communication systems. To provide a better end-user experience, the fourth generation (4G) standard Long Term Evolution/Long Term Evolution-Advanced (LTE/LTE-Advanced) has been developed for high-bandwidth mobile access to accommodate today’s data-heavy applications. LTE/LTE-Advanced has adopted discontinuous reception (DRX) to extend the user equipment’s battery lifetime, thereby further supporting various services and large amounts of data transmissions. By introducing the basics of mathematical analysis and performance evaluation of power-saving mechanisms in 3rd generation partnership project (3GPP) LTE and LTE-Advanced networks, the authors of this book aim to describe novel algorithms which could have better performance capabilities than previous methods. Chapter 1 gives the basic theory description of the 3GPP LTE network and 3GPP DRX power saving mechanism, empirical measurements of LTE network traffic and an overview of the basic LTE DRX model in the field of power saving techniques. Chapter 2 provides steps for deriving a 2-state analytical model up to a 4-state DRX model. The third and final chapter summarizes alternative methods for the implementation of LTE DRX. Contents 1. Basic Theory. 2. Analytical Semi-Markov Power-Saving Models. 3. Other Approaches for LTE Power Saving. About the Authors Scott A. Fowler is Associate Professor at Link?ping University, Sweden, working with the Mobile Telecommunication (MT) group. He has served on several IEEE conferences/workshops as TPC to Chair, including Special Interest Groups coordinator for IEEE Communications Software (CommSoft) Technical Committee since 2012. His research interests include Quality of Service (QoS) support over heterogeneous networks, computer networks (wired, wireless), energy management, mobile computing, pervasive/ubiquitous, performance evaluation of networks and security. Abdelhamid Mellouk is Full Professor at the University of Paris-Est Cr?teil VdM (UPEC, ex. Paris 12), Networks & Telecommunications (N&T) Department (IUT C/V) and LiSSi Laboratory in France. He is a founder of the Network Control Research activity with extensive international academic and industrial collaborations. His general area of research is in adaptive real-time control for high-speed new generation dynamic wired/wireless networking in order to maintain acceptable Quality of Service/Experience for added-value services. Naomi Yamada is a research associate at Link?ping University, Sweden.

Купить

Автор: Группа авторов

A comprehensive review to the theory, application and research of machine learning for future wireless communications In one single volume, Machine Learning for Future Wireless Communications provides a comprehensive and highly accessible treatment to the theory, applications and current research developments to the technology aspects related to machine learning for wireless communications and networks. The technology development of machine learning for wireless communications has grown explosively and is one of the biggest trends in related academic, research and industry communities. Deep neural networks-based machine learning technology is a promising tool to attack the big challenge in wireless communications and networks imposed by the increasing demands in terms of capacity, coverage, latency, efficiency flexibility, compatibility, quality of experience and silicon convergence. The author – a noted expert on the topic – covers a wide range of topics including system architecture and optimization, physical-layer and cross-layer processing, air interface and protocol design, beamforming and antenna configuration, network coding and slicing, cell acquisition and handover, scheduling and rate adaption, radio access control, smart proactive caching and adaptive resource allocations. Uniquely organized into three categories: Spectrum Intelligence, Transmission Intelligence and Network Intelligence, this important resource: Offers a comprehensive review of the theory, applications and current developments of machine learning for wireless communications and networks Covers a range of topics from architecture and optimization to adaptive resource allocations Reviews state-of-the-art machine learning based solutions for network coverage Includes an overview of the applications of machine learning algorithms in future wireless networks Explores flexible backhaul and front-haul, cross-layer optimization and coding, full-duplex radio, digital front-end (DFE) and radio-frequency (RF) processing Written for professional engineers, researchers, scientists, manufacturers, network operators, software developers and graduate students, Machine Learning for Future Wireless Communications presents in 21 chapters a comprehensive review of the topic authored by an expert in the field.

Исполнители: Марина Вьюгова

Купить

Автор: Группа авторов

A guide for scientists, pediatricians and students involved in metabolic studies in pediatric research Addresses the availability of modern analytical techniques and how to apply these techniques in metabolic studies Covers the whole range of available mass spectrometric techniques used for metabolic studies including Stable Isotope Methodology Presents the relevance of mass spectrometry and stable isotope methodology in pediatric research covering applications in Nutrition, Obesity, Metabolic Disorders, and Kidney Disorders Focuses on the interactions between nutrients and the endogenous metabolism within the body and how these factors affect the health of a growing infant

Купить

Автор: Richard W. Sears

MBCT for PTSD provides solid principles, practical tools, and numerous case examples for integrating mindfulness into PTSD treatment. Based on the authors’ experience in the first randomized controlled clinical trial, this pioneering book expands the range of potential treatment options. MBCT has been growing in popularity, and has solid research support, but this is the first text to apply it to trauma survivors This pioneering text is based on the authors’ experience in using MBCT for PTSD in the first randomized controlled clinical trial Containing numerous case examples, it expands the range of potential treatment options and lends new hope for trauma survivors to lead more fulfilling lives The authors combined have a unique set of expert skills; Dr Chard is a well-known expert on PTSD, and Dr Sears is an expert on mindfulness and MBCT

Купить

Автор: St?phane Cal?

Over recent years, the amount of mobile equipment that needs to be connected to corporate networks remotely (smartphones, laptops, etc.) has increased rapidly. Innovative development perspectives and new tendencies such as BYOD (bring your own device) are exposing business information systems more than ever to various compromising threats. The safety control of remote access has become a strategic issue for all companies. This book reviews all the threats weighing on these remote access points, as well as the existing standards and specific countermeasures to protect companies, from both the technical and organizational points of view. It also reminds us that the organization of safety is a key element in the implementation of an efficient system of countermeasures as well. The authors also discuss the novelty of BYOD, its dangers and how to face them. Contents 1. An Ordinary Day in the Life of Mr. Rowley, or the Dangers of Virtualization and Mobility. 2.Threats and Attacks. 3. Technological Countermeasures. 4. Technological Countermeasures for Remote Access. 5. What Should Have Been Done to Make Sure Mr Rowley’s Day Really Was Ordinary. About the Authors Dominique Assing is a senior security consultant and a specialist in the management and security of information systems in the banking and stock markets sectors. As a security architect and risk manager, he has made information security his field of expertise. Stephane Cal? is security manager (CISSP) for a major automobile manufacturer and has more than 15 years of experience of putting in place telecommunications and security infrastructures in an international context.

Купить

Автор: Guy Pujolle

This book presents the state of the art in the field of mobile and wireless networks, and anticipates the arrival of new standards and architectures. It focuses on wireless networks, starting with small personal area networks and progressing onto the very large cells of wireless regional area networks, via local area networks dominated by WiFi technology, and finally metropolitan networks. After a description of the existing 2G and 3G standards, with LTE being the latest release, LTE-A is addressed, which is the first 4G release, and a first indication of 5G is provided as seen through the standardizing bodies. 4G technology is described in detail along with the different LTE extensions related to the massive arrival of femtocells, the increase to a 1 Gbps capacity, and relay techniques. 5G is also discussed in order to show what can be expected in the near future. The Internet of Things is explained in a specific chapter due to its omnipresence in the literature, ad hoc and mesh networks form another important chapter as they have made a comeback after a long period of near hibernation, and the final chapter discusses a particularly recent topic: Mobile-Edge Computing (MEC) servers.

Купить

Автор: Ramon Ferr?s

This book provides a timely and comprehensive overview of the introduction of LTE technology for PPDR communications. It describes the operational scenarios and emerging multimedia and data-centric applications in demand and discusses the main techno-economic drivers that are believed to be pivotal for an efficient and cost-effective delivery of mobile broadband PPDR communications. The capabilities and features of the LTE standard for improved support of mission-critical communications (e.g., proximity services, group communications) are covered in detail. Also, different network implementation options to deliver mobile broadband PPDR communications services over dedicated or commercial LTE-based networks are discussed, including the applicability of the Mobile Virtual Network Operator (MVNO) model and other hybrid models. Radio spectrum matters are also discussed in depth, outlining spectrum needs and providing an outlook into allocated and candidate spectrum bands for PPDR communications and suitable dynamic spectrum sharing solutions in PPDR communications. Explanations are accompanied by a vast collection of references that allow the more intrigued reader to gain further insight into the addressed topics.

Купить

Автор: Frank H. P. Fitzek

Includes a preface written by Professor Leonard Kleinrock, Distinguished Professor of Computer Science, UCLA, USA This book discusses and explores the concept of mobile cloud, creating an inspiring research space for exploiting opportunistic resource sharing, and covering from theoretical research approaches to the development of commercially profitable ideas. A mobile cloud is a cooperative arrangement of dynamically connected communication nodes sharing opportunistic resources. In this book, authors provide a comprehensive and motivating overview of this rapidly emerging technology. The book explores how distributed resources can be shared by mobile users in very different ways and for various purposes. The book provides many stimulating examples of resource-sharing applications. Enabling technologies for mobile clouds are also discussed, highlighting the key role of network coding. Mobile clouds have the potential to enhance communications performance, improve utilization of resources and create flexible platforms to share resources in very novel ways. Energy efficient aspects of mobile clouds are discussed in detail, showing how being cooperative can bring mobile users significant energy saving. The book presents and discusses multiple examples of mobile clouds applications, based on both existing commercial initiatives as well as proof-of-concept test-beds. Visions and prospects are also discussed, paving the way for further development. As mobile networks and social networks become more and more reliant on each other, the concept of resource sharing takes a wider and deeper meaning, creating the foundations for a global real-time multidimensional resource pool, the underlying infrastructure for shareconomy. Above all, this is an inspiring book for anyone who is concerned about the future of wireless and mobile communications networks and their relationship with Social networks. Key Features: Provides fundamental ideas and promising concepts for exploiting opportunistic cooperation and cognition in wireless and mobile networks Gives clear definitions of mobile clouds from different perspectives Associates mobile and wireless networks with social networks, creating a vast fertile ground for novel developments in both research and practical applications Considers research directions, emerging trends and visions This book is an excellent resource for wireless/networking researchers in industry and academia, students and mobile phone programmers. Managers interested in new technology developments, service providers, network operators, and those working in the gaming industry will also find the book insightful.

Купить

Автор: Rajib Taid

Provides a thorough introduction to the development, operation, maintenance, and troubleshooting of mobile communications systems    Mobile Communications Systems Development: A Practical Approach for System Understanding, Implementation and Deployment  is a comprehensive “how to” manual for mobile communications system design, deployment, and support. Providing a detailed overview of end-to-end system development, the book encompasses operation, maintenance, and troubleshooting of currently available mobile communication technologies and systems. Readers are introduced to different network architectures, standardization, protocols, and functions including 2G, 3G, 4G, and 5G networks, and the 3GPP standard.  In-depth chapters cover the entire protocol stack from the Physical (PHY) to the Application layer, discuss theoretical and practical considerations, and describe software implementation based on the 3GPP standardized technical specifications. The book includes figures, tables, and sample computer code to help readers thoroughly comprehend the functions and underlying concepts of a mobile communications network. Each chapter includes an introduction to the topic and a chapter summary. A full list of references, and a set of exercises are also provided at the end of the book to test comprehension and strengthen understanding of the material. Written by a respected professional with more than 20 years’ experience in the field, this highly practical guide:  Provides detailed introductory information on GSM, GPRS, UMTS, and LTE mobile communications systems and networks Describes the various aspects and areas of the LTE system air interface and its protocol layers Covers troubleshooting and resolution of mobile communications systems and networks issues Discusses the software and hardware platforms used for the development of mobile communications systems network elements Includes 5G use cases, enablers, and architectures that cover the 5G NR (New Radio) and 5G Core Network  Mobile Communications Systems Development  is perfect for graduate and postdoctoral students studying mobile communications and telecom design, electronic engineering undergraduate students in their final year, research and development engineers, and network operation and maintenance personnel.

Купить

Автор: Simone Frattasi

The essential guide to state-of-the art mobile positioning and tracking techniques—fully updated for new and emerging trends in the field Mobile Positioning and Tracking, Second Edition explores state-of-the-art mobile positioning solutions applied on top of current wireless communication networks. Application areas covered include positioning, data fusion and filtering, tracking, error mitigation, both conventional and cooperative positioning technologies and systems, and more. The authors fill the gap between positioning and communication systems, showing how features of wireless communications systems can be used for positioning purposes and how the retrieved location information can be used to enhance the performance of wireless networks. Unlike other books on the subject, Mobile Positioning and Tracking: From Conventional to Cooperative Techniques, 2nd Edition covers the entire positioning and tracking value chain, starting from the measurement of positioning signals, and offering valuable insights into the theoretical fundamentals behind these methods and how they relate to application areas such as location-based services, as well as related disciplines and professional concerns, including global business considerations and the changing laws and standards governing wireless communication networks. Fully updated and revised for the latest developments in the field, this Second Edition: Features new chapters on UWB positioning and tracking, indoor positioning in WLAN, and multi-tag positioning in RFID Explores an array of positioning and tracking systems based on satellite and terrestrial systems technologies and methods Introduces advanced and novel topics such as localisation in heterogeneous and cooperative scenarios Provides a bridge between research and industry with potential implementations of the solutions presented Mobile positioning and tracking is subject to continuous innovations and improvements. This important working resource helps busy industry professionals and practitioners—including software and service developers—stay on top of emerging trends in the field. It is also a valuable reference for advanced students in related disciplines studying positioning and mobile technologies.

Купить

Автор: Группа авторов

The first in-depth treatment of the synthesis, processing, and characterization of nanomaterials using lasers, ranging from fundamentals to the latest research results, this handy reference is divided into two main sections. After introducing the concepts of lasers, nanomaterials, nanoarchitectures and laser-material interactions in the first three chapters, the book goes on to discuss the synthesis of various nanomaterials in vacuum, gas and liquids. The second half discusses various nanomaterial characterization techniques involving lasers, from Raman and photoluminescence spectroscopies to light dynamic scattering, laser spectroscopy and such unusual techniques as laser photo acoustic, fluorescence correlation spectroscopy, ultrafast dynamics and laser-induced thermal pulses. The specialist authors adopt a practical approach throughout, with an emphasis on experiments, set-up, and results. Each chapter begins with an introduction and is uniform in covering the basic approaches, experimental setups, and dependencies of the particular method on different parameters, providing sufficient theory and modeling to understand the principles behind the techniques.

Купить

Автор: Graham Duff

The original six-part BBC Radio 4 comedy sci-fi series starring Mark Gatiss and David Warner.  'Doctor Who fans may well have found a new love-object' – Guardian   'A winning blend of Doomwatch, Quatermass and British silliness that has cult written all over it' – Times   The year is 2099 and Professor Nebulous (Mark Gatiss, 'League of Gentlemen') is the director of eco-troubleshooting organisation K.E.N.T. – the Key Environmental Nonjudgemental Taskforce. But it's so under-funded it subsidises its work by running a launderette. And the twintub's malfunctioned.   In a post-apocalyptic England, cattle-clasm has wiped out the majority of the livestock, there are new months such as Octember and Janril, and climate change has formed a drizzly new season called Hamble.   Nebulous is determined to get Mother Earth back on the right track, nevertheless he must pit his wits against sentient dust, killer cacti, naked aliens and the evil Dr Klench (David Warner, 'Titanic', 'Star Trek VI') who's bent on world domination. Can K.E.N.T. save the day before the spin cycle finishes?   Nebulous also stars Graham Crowden, Paul Putner and Rosie Cavaliero.

Исполнители: Mark Gatiss

Купить

Автор: At?lio Gameiro

Taking a coherent and logical approach, this book describes the potential use of co-ordinated multipoint systems supported by radio over fiber. It covers an impressive breadth of topics, ranging from components, subsystem and system architecture, to network management and business perspectives. The authors show the importance of radio over fiber in eliminating or mitigating against the current, perceived barriers to the use of co-ordinated multipoint, and the drivers for standardisation activities in future mobile/wireless systems over the next few years. The book brings together the system concept for centralized processing, including what is required for co-existence with legacy wireless systems, the algorithms that can be used for improving wireless bandwidth utilization at physical and MAC layers and the radio over fiber network and link design necessary to support the wireless system. Other important research is also covered as the authors look at compensating for radio over fiber impairments and providing simple network management functions. A study of service provision and the business case for such a future wireless system is also fully considered. This book comes at an important time for future wireless systems with standardization of fourth generation wireless systems still ongoing. The content enables readers to make key decisions about future standardisation and their own research work. The business analysis also makes the book useful to those involved in deciding the future directions of telecoms organisations. This information will be core to their decision-making as it provides technical knowledge of the state-of-the-art but also system level assessments of what is possible in a business environment.

Купить

Автор: Fr?d?ric Launay

Купить

Автор: Джордж Оруэлл

Winston Smith works for the Ministry of Truth in London, chief city of Airstrip One. Big Brother stares out from every poster and the Thought Police uncover each act of betrayal. When Winston finds love with Julia, he discovers that life does not have to be dull and deadening and awakens to new possibilities. Despite the police helicopters that hover and circle overhead, Winston and Julia begin to question the Party. Yet Big Brother will not tolerate dissent – even in the mind. For those with original thoughts they invented Room 101… Nineteen Eighty-Four is George Orwell's terrifying vision of a totalitarian future in which everything and everyone is slave to a tyrannical regime. Christopher Eccleston, Tim Pigott-Smith and Pippa Nixon star in this new drama, part of BBC Radio 4's The Real George Orwell season – a Radio 4 journey that explores the disjuncture between the man who was Eric Blair and the writer who was George Orwell.

Исполнители: Tim Pigott-Smith

Купить

Автор: Группа авторов

Human health and well-being are tied to the vitality of the global ocean and coastal systems on which so many live and rely. We engage with these extraordinary environments to enhance both our health and our well-being. But, we need to recognize that introducing contaminants and otherwise altering these ocean systems can harm human health and well-being in significant and substantial ways. These are complex, challenging, and critically important themes. How the human relationship to the oceans evolves in coming decades may be one of the most important connections in understanding our personal and social well-being. Yet, our understanding of this relationship is far too limited. This remarkable volume brings experts from diverse disciplines and builds a workable understanding of breadth and depth of the processes – both social and environmental – that will help us to limit future costs and enhance the benefits of sustainable marine systems. In particular, the authors have developed a shared view that the global coastal environment is under threat through intensified natural resource utilization, as well as changes to global climate and other environmental systems. All these changes contribute individually, but more importantly cumulatively, to higher risks for public health and to the global burden of disease. This pioneering book will be of value to advanced undergraduate and postgraduate students taking courses in public health, environmental, economic, and policy fields. Additionally, the treatment of these complex systems is of essential value to the policy community responsible for these questions and to the broader audience for whom these issues are more directly connected to their own health and well-being. «The seas across this planet and their effects on human society and its destiny are a fascinating subject for analysis and insights derived from intellectual inquiry. This diverse and complex subject necessarily requires a blending of knowledge from different disciplines, which the authors of this volume have achieved with remarkable success.» «The following pages in this volume are written in a lucid and very readable style, and provide a wealth of knowledge and insightful analysis, which is a rare amalgam of multi-disciplinary perspectives and unique lines of intellectual inquiry. It is valuable to get a volume such as this, which appeals as much to a non-specialist reader as it does to those who are specialists in the diverse but interconnected subjects covered in this volume.» (From the «Foreword» written by, R K Pachauri, Director General, TERI and Chairman, IPCC)

Купить

Автор: Hong Meng

Explore this comprehensive overview of organic electrochromic materials and devices from a leading voice in the industry  Organic Electronics for Electrochromic Materials and Devices  delivers a complete discussion of the major and key topics related to the phenomenon of electrochromism. The text covers the history of organic electrochromism, its fundamental principles, different types of electrochromic materials, the development of device structures and multi-function devices, characterizations of device performance, modern applications of electrochromic devices, and prospects for future electrochromic devices.  The distinguished author places a strong focus on recent research results from universities and private firms from around the world and addresses the issues and challenges faced by those who apply organic electrochromic technology in the real world. With these devices quickly becoming the go-to display technology in the field of electronic information, this resource will quickly become indispensable to all who work or study in the field of optics.  Readers will also benefit from the inclusion of:  A thorough introduction to organic electrochromism, including its history and the mechanisms of electrochromic devices An exploration of polymer electrolytes for electrochromic applications, including their requirements and types A discussion of electrochromic small molecules, including the development of technology in conjugated polymer and violene-cyanine hybrids A treatment of Prussian blue and metallohexacyanates, including their backgrounds, technology development, crystal structures, synthesis, nanocomposites, and assembled electrochromic devices Perfect for materials scientists, polymer chemists, organic chemists, physical chemists, and inorganic chemists,  Organic Electronics for Electrochromic Materials and Devices  will also earn a place in the libraries of physicists and those who work in the optical industry who seek a one-stop reference that covers all aspects of organic electrochromic materials.

Купить