Kommunikationsteknik / telekommunikation

Hvis du er sælger, eller godt kunne tænke dig at leve af at være sælger, så kan det altså godt betale sig at få fingrene i "En sælgers vej til succes".Denne bog giver dig alle de råd, du har brug for i dit arbejde. Uanset om du sælger huse, annoncer, IT, design, ideer eller noget helt andet, er denne bog til dig. Den vil gi dig anvisninger, eksempler og på inspirerende vis hjælpe til fremgang i dit salgsarbejde og dit forhold til andre mennesker.Uanset om du står overfor at skulle arbejde professionelt med salg, er erfaren sælger eller ønsker at forstå, hvordan du opnår succesrigt salg, vil Bettger’s erfaringer og anbefalinger være guld værd for dig. Når du har læst bogen vil du forstå ”kraften af ​​entusiasme” – ”sådan overvinder du frygt” – ”sådan skaber du troværdighed omkring dit produkt og budskab”, ”nøgleordet for at gøre en skeptisk klient til en entusiastisk køber” - ”den hurtigste måde at vinde tillid”, sådan leverer du et overbevisende salgsbudskab - til ”syv gyldne regler for at lukke et salg "Bogens forfatter deler de sælgende hemmeligheder, der førte til uovertruffen succes og berømmelse som en af ​​de højest betalte sælgere i Amerika!! Han deler instruktive anekdoter og trinvise retningslinjer for, hvordan man udvikler stil, ånd og tilstedeværelse af en vindende sælger.Efter udgivelsen er bogen blevet anerkendt i hele verden som et af de absolut vigtigste værker til at forstå og eksekvere professionelt salg. Her hjemme i Danmark er bogen nu udgivet i 11. oplag. En sælgers bibel til sælgere og forretningsfolk der vil forså kunsten at opnå succesrigt salg.

VHF Håndbog indeholder vigtigt baggrundsviden som enhver, der tager eller ønsker at tage prøven til VHF/SRC certifikat har glæde af. Bogen opfylder Søfartsstyrelsens krav til undervisningsmateriale til kurset. Kombinationen af letlæst tekst, råd fra eksperter, gode farveillustrationer og opdaterede dækningskort sikre at stoffet bliver enkelt og interessant. Bogen udkommer i serien med titler fra Royal Yachting Association (RYA)

PLC Styring gennemgår opbygning af PLCen og hvordan programmeres. PLCen er kernen i langt de fleste automatiserede fabriksanlæg og findes i mange forskellige fabrikater og udgaver fra priser på få tusind kroner. Bogen giver eksempler på anvendelse af en PLC til forskellige opgaver, og kan inspirere de mange mennesker der i kraft af deres arbejde møder den.

Påvirk politik på alle platforme er din guide til at erobre opmærksomhed i en ny medievirkelighed og slå igennem med din mærkesag. En politisk værktøjsbog, der favner over klassiske lobbydiscipliner og går i dybden med digitale påvirkningsteknikker, herunder mulighederne inden for kunstig intelligens. Påvirk politik på alle platforme er skrevet af den erfarne rådgiverduo Benjamin Rud Elberth og Peter Mose, forfattere til en række bøger om politik, kommunikation og indflydelse. Påvirk politik på alle platforme klæder dig på til at træffe de strategiske og lavpraktiske valg, der giver adgang til magtens maskinrum, hvor beslutninger forberedes og tages – med konsekvenser for lønmodtagerorganisationer, virksomheder, NGOer og brancheforeninger.Påvirk politik på alle platforme er ikke alene fyldt med tips, tricks og tjeklister, men også med konkrete eksempler på, hvordan de dygtige lobbyister arbejder.

Trådløse signaler med modulerede og pulserende radioogmikrobølger er en ny form for luftforurening, og strålernerammer os døgnet rundt fra alskens sendere. Vi deltageralle i et globalt trådløst eksperiment!Stråler kan ikke ses, høres eller mærkes af de fleste, mende er en helbredstrussel for sårbare grupper som gravide,børn og el-overfølsomme mennesker.Det kan være nødvendigt med afskærmning mod stråler.Det må være ansvarspådragende, når WHO og Sundhedsstyrelsenfrasorterer dokumentation fra biofysisk forskningom biologiske skadevirkninger og accepterer ”no risk”propaganda ud fra manipuleret kræftmobilforskning.Sundhedsstyrelsen svigter befolkningen og især sårbare grupper,når der undlades forebyggelse af skadevirkninger vedbestråling. Der skal forebygges Nu!Det trådløse marked udbygges og styres af EU direktiverog forordninger, og lige nu gælder det mobile bredbåndssenderesom WiFi og Wlan, der giver internet adgang.Vi borgere kan ikke indhente oplysninger om, hvor dissesendere sættes op i kommunen, men selvfølgelig skal vivide, hvilke bestrålinger vi udsættes for, og hvor vi bestrålesfra.Børn skal ikke bestråles med mikrobølger i hverken skoler,daginstitutioner, tog eller busser.Der findes allerede el-overfølsomme miljøflygtninge!

Dagligt fristes vi af store annoncer om trådløse produkter. Med mobile bredbånd kan der surfes på nettet med smartphones og en bærbar computer, og de unge føler sig usårlige.Døgnet rundt udsættes vi for trådløs forurening. Er trådløse markeder vigtigere end sundhed og miljø? Vi misinformeres om sikre grænseværdier, som ikke findes. Vi fodres med forskningsskabte myter, fakta frasorteres og lægelige advarsler ignoreres.Det er på høje tid med forebyggelse. Børn kan ikke beskytte sig selv imod en usynlig og ukendt fare.

In the vast blue ocean, ships of different navies operate far from each other and are generally not in visual range. However, a ship can be uniquely identified based on a number of emissions that are characteristic to each and are called signatures. These include acoustic signature from machinery and flow, heat or infrared signature from exhaust, radar cross section from hull surfaces, magnetic signature from hull material, electric signature from corrosion protection systems etc. These signatures are used by surveillance and tracking sensors for attacking ships in general and warships, in particular. Survivability at sea requires management of all platform signatures to produce a net effect of reduced vulnerability. Anti-ship missiles pose the greatest threat to ships at sea. Prior to the Second World War, studies were carried out in parallel on the use of radar and infrared seekers in missiles for detection, identification and homing. For the materials available in the 1940s, radar seekers gave better results and hence, have become the standard fit. Over the years, advances in material sciences have improved the capabilities of infrared seekers and today, missiles have several guidance/seeker options that include radar, electro- optical camera and infrared imaging. Infrared homing is preferred for terminal guidance because of its inherent immunity to jamming techniques. A stealthy naval platform remains undetected and therefore can be deployed closer to the target to fulfill its mission with lesser risk of damage and associated causalities. Signatures used for ship detection include both underwater and above water. Signatures used by underwater weapons like torpedoes and mines are acoustics, magnetics, wake homing and extremely low frequency emissions (ELFE). Anti-ship missiles use above water signatures that include laser cross section (LCS), radar cross section (RCS), air borne noise and infrared (IR).

The Core Network for 5G Advanced, Second Edition covers up to the 3GPP release 17 & 18 which includes the core network for 5G Advanced as well as a large number of new features added by 3GPP to expand the initial 5G Core specifications in rel-15/16. This new release includes A complete update to reflect developments in Releases 17 and 18, along with new chapters on Service Exposure, non-3GPP access, 3GPP access for new use cases, Edge computing, Industry and Enterprise features, Regulatory services and Network automation and AI/ML, an overview of the 5G Core Architecture, and much more.Examples of 5G network deployment options for different use cases are also included. Written by authors who are heavily involved in the development of 5G standards, and who have written several successful books on 4G and 5G Core Networks, this book provides an authoritative reference on the technologies and standards of the 3GPP 5G Core network.

"An innovative introduction to the foundations of signals, systems, and transforms, emphasising discretetime concepts, and smoothing the transition towards study of Digital Signal Processing (DSP). With realworld examples throughout, and over 325 end-of-chapter problems. Ideal for sophomore and junior students in electrical engineering"--

This book provides a guide for those looking to understand the potential of blockchain technology and its impact on various industries. The book provides an in-depth exploration of blockchain technology, its use cases, and the opportunities and challenges it presents. From digital currencies and smart contracts to supply chain management and decentralized finance, the book covers all the key aspects of blockchain technology. The authors also go beyond the technical details, providing valuable insights and practical advice on how to navigate this new era of decentralization and trustless transactions. The book is an ideal read for researchers, entrepreneurs, investors, or anyone looking to stay ahead of the curve and stay informed about the future of blockchain technology.

This book investigates data security approaches in Heterogeneous Communications Networks (HCN). First, the book discusses the urgent need for a decentralized data management architecture in HCN. The book investigates preliminaries and related research to help readers obtain a comprehensive picture of the research topic. Second, the book presents three blockchain-based approaches for data management in HCN: data provenance, data query, and data marketing. Finally, based on the insights and experiences from the presented approaches, the book discusses future research directions.

Getting to Know Mobile GIS empowers readers to creatively use Mobile GIS and drive innovation in this fast-advancing field."Mobile-first" and the "post-PC era" aren't just buzzwords; they represent today's reality. Within the GIS industry, the mobile internet and Mobile GIS have profoundly transformed how we acquire, visualize, analyze, and disseminate geospatial information. With its ubiquitous use and location-aware capabilities, the mobile platform is an essential part of enterprise GIS across industries, making Mobile GIS crucial to the business operations and future success of wide-ranging organizations.Getting to Know Mobile GIS helps GIS professionals and GIS students grasp the opportunities presented by Mobile GIS. It provides principles and detailed tutorials to teach today's cutting-edge Mobile GIS technologies. Using a no-code, low-code approach, it makes Mobile GIS easy and fun to learn. Readers can immediately become productive in creating enterprise GIS solutions, ranging from online and offline spatial data visualization, data collection, location sharing, and workforce coordination to integration with enterprise workflows.Dr. Pinde Fu leads the Configuration team at Esri Professional Services and teaches at universities, including Harvard University Extension School. Dr. Pinde Fu champions the configure-first approach, maximizing Esri's out-of-the-box Web and Mobile GIS technologies to swiftly build GIS solutions. Additionally, as a Senior Principal Software Developer, Dr. Fu employs full-stack programming to develop custom solutions as needed. Several of his projects have won special achievement awards. Fu is the author of Getting to Know Web GIS (Esri Press, 2022) and lead author of Web GIS: Principles and Applications (Esri Press, 2010).

This book presents extensive research on the quality of 360° video perceived by users with HMDs. The book aims to develop a set of standard guidelines for the systematic visual quality assessment of 360° videos. Firstly, conventional subjective test methods such as Absolute Category Rating (ACR) and Double Stimulus Impairment Scale (DSIS) are applied to evaluate video quality, alongside the Modified ACR (M-ACR) method newly proposed. Building on the reliability and general applicability of the procedure across different tests, a methodological framework for 360° video quality assessment is then presented. The author also analyzes simulator sickness to investigate the impact of different influencing factors. The insights gained on simulator sickness related to 360° video contribute to a better understanding of this particular use case of VR and can help to improve comfort among users by suggesting improvements in the technical specifications of 360° video and HMD technology and thusimproving QoE.

This open access book offers comprehensive, self-contained knowledge on Digital Twin (DT), which is a very promising technology for achieving digital intelligence in the next-generation wireless communications and computing networks. DT is a key technology to connect physical systems and digital spaces in Metaverse.The objectives of this book are to provide the basic concepts of DT, to explore the promising applications of DT integrated with emerging technologies, and to give insights into the possible future directions of DT. For easy understanding, this book also presents several use cases for DT models and applications in different scenarios.The book starts with the basic concepts, models, and network architectures of DT. Then, we present the new opportunities when DT meets edge computing, Blockchain and Artificial Intelligence, anddistributed machine learning (e.g., federated learning, multi-agent deep reinforcement learning). We also present a wide application of DT as an enabling technology for 6G networks, Aerial-Ground Networks, and Unmanned Aerial Vehicles (UAVs).The book allows an easy cross-reference owing to the broad coverage on both the principle and applications of DT. The book is written for people interested in communications and computer networks at all levels. The primary audience includes senior undergraduates, postgraduates, educators, scientists, researchers, developers, engineers, innovators and research strategists.

Comprehensive technical history of large format film (Widefilm) and American Widescreen Cinema from 1833 to 1923. Features sections on pre-cinema, early cinema , 3D, 4D, and Special Venue entertainment systems.

The field of wireless communication has undergone a remarkable transformation over the past few decades, revolutionizing the way we connect and communicate with each other and the world around us. "Principles and Practices of Wireless Communication" seeks to serve as a comprehensive guide to this dynamic and ever-evolving domain, offering an in-depth exploration of the fundamental principles and cutting-edge practices that underpin wireless technology. In an era where wireless communication has become an integral part of our daily lives, from smartphones and Wi-Fi networks to emerging technologies like 5G and the Internet of Things (IoT), understanding the core concepts and best practices is crucial for professionals, students, and enthusiasts alike.This book is designed to be a valuable resource for individuals looking to gain a solid grasp of wireless communication, whether you are an aspiring engineer, a seasoned practitioner, or an academic researcher. With a focus on clarity and accessibility, "Principles and Practices of Wireless Communication" presents a holistic approach, covering topics ranging from the basics of electromagnetic waves and wireless signal propagation to advanced topics like multiple access techniques, channel coding, and network protocols. It aims to bridge the gap between theoretical knowledge and practical application, enabling readers to navigate the complex landscape of wireless technology with confidence and insight. Whether you are seeking a foundational understanding of wireless communication or are interested in the latest developments and emerging trends, this book will serve as your essential companion in the fascinating world of wireless communication.

This book relates the history of the BBC in Aberdeen from its inception in 1923 right up to the present day. This book contains fascinating information about the origin of 'Station 2BD' in Belmont Street. There are interesting profiles of the people and personalities involved. It details the search for new premises and the establishment of the famous Beechgrove Terrace location. It also documents events during WWII, the arrival of television and the local radio years.. Now greatly expanded with more information and fully illustrated with original photographs, 'Aberdeen Calling' is a fascinating look at the BBC in the North East of Scotland.

This book highlights the basic theories and technical principles of the synthetic aperture radar (SAR), aiming to bridge theories and applications for readers. Supported by the practical experience of the author's dedicated research, this book also constructs the SAR theoretical system from multiple perspectives.The synthetic aperture radar (SAR) is a weather-independent microwave remote sensing device that involves a number of multidisciplinary fields such as signal processing and image information processing. Written by experts in remote sensing and signal processing, the book explains the signal echo modeling, imaging principles and algorithms, image quality control methods, and image applications. Readers are provided with concise descriptions of commonly used imaging algorithms for SAR in multiple regimes, modes, and applications, including the Range Doppler Algorithm (RDA) and the Frequency Scaling Algorithm (FSA). Continuous wave/pulse regime SAR technology, inverse synthetic aperture radar (ISAR) technology, digital beam forming (DBF), interferometry, and moving target detection methods are discussed in detail.The book is a must-read and comprehensive reference for researchers and engineers engaged in the R&D of the SAR and for graduate students interested in the field.

Wireless communication is the backbone of the digitized society, where everything is connected and intelligent. Access points and devices are nowadays equipped with multiple antennas to achieve higher data rates, better reliability, and support more users than in the past. This book gives a gentle introduction to multiple antenna communications with a focus on system modeling, channel capacity theory, algorithms, and practical implications. The basics of wireless localization, radar sensing, and controllable reflection through reconfigurable surfaces are also covered. The goal is to provide the reader with a solid understanding of this transformative technology that changes how wireless networks are designed and operated, today and in the future.The first three chapters cover the fundamentals of wireless channels, and the main benefits of using multiple antennas are identified: beamforming, diversity, and spatial multiplexing. The theory and signal processing algorithms for multiple-input multiple-output (MIMO) communications with antenna arrays at the transmitter and receiver are progressively developed. The next two chapters utilize these results to study point-to-point MIMO channels under line-of-sight (LOS) and non-LOS conditions, covering the shape of signal beams, impact of array geometry, polarization, and ways to achieve reliable communication over fading channels. The book then shifts focus to multi-user MIMO channels, where interference between devices is managed by spatial processing. The next chapter extends the theory to multicarrier channels and explains practical digital, analog, and hybrid hardware implementations. The last two chapters cover the role of multiple antennas in localization and sensing, and how reconfigurable surfaces can improve both communication and sensing systems.The text was developed as the textbook for a university course and builds on the reader's previous knowledge of signals and systems, linear algebra, probability theory, and digital communications. Each chapter contains numerous examples, exercises, and simulation results that can be reproduced using accompanying code. The accompanying code and material is available at https://github.com/emilbjornson/mimobook

This book provides insight into the importance of advanced innovative technologies such as the Internet of Things (IoT), artificial intelligence (AI), and Metaverse as part of information and communication technology (ICT) solutions in education. Key features of this book include the recent and emerging developments in various specializations in education and finding their solutions by incorporating IoT, AI and ICT. This book presents useful applications, interventions, and case studies that cater to their improved requirements. Topics include formal and services based on IoT; AI technology for IoT-based educational delivery; interfacing devices to IoT; smart educational services; ChatGPT; Smartbots; and more. The authors include several practical solutions and applications of IoT and ICT in education. The book applies to researchers, academics, students, educators and practitioners around the world.