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Rails 4 in Action: Revised Edition of Rails 3 in Action
by Rebecca Skinner Yehuda Katz Ryan Bigg Stephen KlabnikSummaryRails 4 in Action is a comprehensive introduction to Rails that guides you hands-on through all you'll need to become a competent and confident Rails developer. In it, you'll master Rails 4 by developing a ticket-tracking application that includes RESTful routing, authentication and authorization, file uploads, email, and more.Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.About the BookRails is a full-stack, open source web framework powered by Ruby. Now in version 4, Rails is mature and powerful, and to use it effectively you need more than a few Google searches. You'll find no substitute for the guru's-eye-view of design, testing, deployment, and other real-world concerns that this book provides.Rails 4 in Action is a hands-on guide to the subject. In this fully revised new edition, you'll master Rails 4 by developing a ticket-tracking application that includes RESTful routing, authentication and authorization, file uploads, email, and more. Learn to design your own APIs and successfully deploy a production-quality application. You'll see test-driven development and behavior-driven development in action throughout the book, just like in a top Rails shop.What's InsideCreating your own APIsUsing RSpec and CapybaraEmphasis on test-first developmentFully updated for Rails 4About the ReaderFor readers of this book, a background in Ruby is helpful but not required. No Rails experience is assumed.About the AuthorsRyan Bigg, Yehuda Katz, Steve Klabnik, and Rebecca Skinner are contributors to Rails and active members of the Rails community.Table of ContentsRuby on Rails, the frameworkTesting saves your baconDeveloping a real Rails applicationOh, CRUD!Nested resourcesAuthenticationBasic access controlFine-grained access controlFile uploadingTracking stateTaggingSending emailDeploymentDesigning an APIRack-based applications
Rails 4 Application Development HOTSHOT
by Saurabh BhatiaAttractive practical projects to polish your application building skills, through a straightforward, highly focused and interesting approach towards application development. If you are a developer who is already familiar with the basics of the Rails framework and have previously worked with Rails 3.2 or earlier, then this is the ideal book for you. It is assumed that you have some prior experience with the development of applications. This book will help you to upgrade your existing knowledge and also ensure its applicability. You will be expected to setup Rails, MySQL / PostgreSQL, Mongodb and required dependencies themselves.
Rails: Build Your Own Ruby on Rails Website
by Glenn Goodrich Patrick LenzRails: Novice to Ninja is an easy-to-follow, practical and fun guide to Ruby on Rails for beginners. It covers all you need to get up and running, from installing Ruby, Rails and SQLite to building and deploying a fully-featured web application. The third edition of this book has been fully updated to cover Rails 5, the latest version of the framework. Unlike other Rails books, this book doesn't assume that you are an experienced web developer, or that you've used Ruby before. An entire chapter is devoted to learning Ruby in a fun way, using the interactive Ruby console, so you can follow along at home. You'll be an accomplished Ruby programmer in no time! You'll then start using Rails to build a practical, working project: a Reddit-like social news application. As you'll build the app, you'll gain valuable experience of using Rails features such as user authentication, session cookies, and automated testing. The book finishes with chapters on debugging, benchmarking and deployment to a live web server.
Rails: Lightning-Fast Web Development
by Bruce A. Tate Curt Hibbs Lance CarlsonIn just a matter of days, you can develop powerful web applications with Rails that once took weeks or months to produce with other web frameworks. If that sounds too good to be true, it isn't. Find out for yourself with Rails: Up and Running, the concise and popular book that not only explains how Rails works, but guides you through a complete test drive. Perfect for beginning web developers, this thoroughly revised edition teaches you the basics of installing and using Rails 2.1 and the Ruby scripting language. While Rails is praised for its simplicity, there are still a few tricky steps to master along the way. Rails: Up and Running offers lots of examples and covers just about everything you need to build functional Rails applications right away. Learn how to: Create simple database-backed applications, and build dynamic user-centric web pages using Ajax and REST Exploit the Rails service frameworks to send emails and implement web services Map data to an imperfect table, traverse complex relationships, and build custom finders Use techniques to solve common database performance problems See how fast you can go on Rails, and how reliable it's become with the stability and power of version 2.1. With Rails: Up and Running, you'll discover why Rails is a remarkable new way to build database-driven web applications.
Railo 3 Beginner’s Guide
by Gert Franz Mark DrewPart of Packt's Beginner's Guide series, this book uses practical examples and screenshots to steadily guide the reader through setting up and using Railo. If you want to develop your own dynamic web applications using CFML, then this book is for you. No prior experience with Railo or CFML is required, although you will be expected to have some web application development experience and knowledge of HTML.
Rail Transport—Systems Approach
by Aleksander SładkowskiThis book shows how the systems approach is employed by scientists in various countries to solve specific problems concerning railway transport. In particular, the book describes the experiences of scientists from Romania, Germany, the Czech Republic, the UK, Russia, Ukraine, Lithuania and Poland. For many of these countries there is a problem with the historical differences between the railways. In particular, there are railways with different rail gauges, with different signaling and communication systems, with different energy supplies and, finally, with different political systems, which are reflected in the different approaches to the management of railway economies. The book’s content is divided into two main parts, the first of which provides a systematic analysis of individual means of providing and maintaining rail transport. In turn, the second part addresses infrastructure and management development, with particular attention to security issues. Though primarily written for professionals involved in various problems concerning railway transport, the book will also benefit manufacturers, railway technical staff, managers, and students with transport specialties, as well as a wide range of readers interested in learning more about the current state of transport in different countries.
Rage
by Matthew CostelloAn action-packed adventure based on the award-winning videogame from id Software, the creators of DOOM® and QUAKE®, Rage follows one man's fight to save the future of humanity in a ravaged, post-apocalyptic world. The asteroid Apophis has annihilated Earth, and only a small percentage of humanity's best and brightest have been saved. Buried deep below the ground in life-sustaining Arks, these chosen few are tasked with one vital mission--to restore civilization to a devastated planet hundreds of years after the impact.When Lieutenant Nick Raine emerges from his Ark, he finds a future indistinguishable from nightmare. Humankind has not been entirely destroyed on the surface world, and a primitive new society has emerged in which life is nasty, brutish, and short. Mutants and bandits prey upon the weak, and a mysterious military group known as the Authority preys upon everyone. Worst of all, a would-be tyrant seeks to impose his will upon the shattered planet. Armed with nothing more than his combat training and survival instincts, Raine must rise to meet the challenges of the wasteland.From the Trade Paperback edition.
RADIUS
by Jonathan HassellThe subject of security never strays far from the minds of IT workers, for good reason. If there is a network with even just one connection to another network, it needs to be secured. RADIUS, or Remote Authentication Dial-In User Service, is a widely deployed protocol that enables companies to authenticate, authorize and account for remote users who want access to a system or service from a central network server. Originally developed for dial-up remote access, RADIUS is now used by virtual private network (VPN) servers, wireless access points, authenticating Ethernet switches, Digital Subscriber Line (DSL) access, and other network access types. Extensible, easy to implement, supported, and actively developed, RADIUS is currently the de facto standard for remote authentication. RADIUS provides a complete, detailed guide to the underpinnings of the RADIUS protocol, with particular emphasis on the utility of user accounting. Author Jonathan Hassell draws from his extensive experience in Internet service provider operations to bring practical suggestions and advice for implementing RADIUS. He also provides instructions for using an open-source variation called FreeRADIUS. "RADIUS is an extensible protocol that enjoys the support of a wide range of vendors," says Jonathan Hassell. "Coupled with the amazing efforts of the open source development community to extend RADIUS's capabilities to other applications-Web, calling card security, physical device security, such as RSA's SecureID-RADIUS is possibly the best protocol with which to ensure only the people that need access to a resource indeed gain that access." This unique book covers RADIUS completely, from the history and theory of the architecture around which it was designed, to how the protocol and its ancillaries function on a day-to-day basis, to implementing RADIUS-based security in a variety of corporate and service provider environments. If you are an ISP owner or administrator, corporate IT professional responsible for maintaining mobile user connectivity, or a web presence provider responsible for providing multiple communications resources, you'll want this book to help you master this widely implemented but little understood protocol.
Radio's Greatest of All Time
by Rush LimbaughA collection of Rush Limbaugh’s greatest on-air moments, with special commentary and personal stories from his beloved widow, Kathryn Limbaugh, and brother, David Limbaugh. <p><p>For more than thirty years, millions of listeners tuned in to hear Rush Limbaugh’s voice. At its peak, The Rush Limbaugh Show aired on more than 650 radio stations nationwide, and his inimitable commentary and distinctive sense of humor garnered a devoted audience that celebrated with him when he received the Presidential Medal of Freedom in 2020. <p><p>Rush’s passing the following year sent shock waves through the conservative and broadcasting communities. In this timeless collection of his best work, his triumphant legacy as the greatest voice for conservatism is cemented in history. When Rush’s dear friend Vince Flynn first suggested the idea of this book, Rush considered the task daunting. “How can I possibly select the best of the best,” he joked, “from all the years of pure genius?” Over time, Rush came to love this project immensely, and recalled incredible details from his childhood and early career. <p><p>Featuring commentary from loved ones, family, friends, and prominent figures such as President Donald Trump, Supreme Court Justice Clarence Thomas, Governor Ron DeSantis, and more, Radio’s Greatest of All Time is the ultimate gift for any devoted listener and leaves no doubt about his profound impact on this country. <p> <b>New York Times Bestseller</b>
Radiomics and Radiogenomics in Neuro-oncology: First International Workshop, RNO-AI 2019, Held in Conjunction with MICCAI 2019, Shenzhen, China, October 13, Proceedings (Lecture Notes in Computer Science #11991)
by Hassan Mohy-ud-Din Saima RathoreThis book constitutes the proceedings of the First International Workshop on Radiomics and Radiogenomics in Neuro-oncology, RNO-AI 2019, which was held in conjunction with MICCAI in Shenzhen, China, in October 2019. The 10 full papers presented in this volume were carefully reviewed and selected from 15 submissions. They deal with the development of tools that can automate the analysis and synthesis of neuro-oncologic imaging.
Radiolocation in Ubiquitous Wireless Communication
by Danko AntolovicThe subject of the book is application of multi-antenna radiolocation to the environment of fast, ubiquitous wireless communication among portable devices. It is a systematic presentation of the author's research and development in the field, within the 802.11b standard, while explaining the general principles and exploring applications to other standards and situations. The purpose is to fill a gap in the current technical literature and present the issues involved in locating mobile wireless network agents, in a single volume, accessible to system designers and other practitioners in the wireless field.
Radio Wave Propagation and Channel Modeling for Earth-Space Systems
by Athanasios G. Kanatas Athanasios D. PanagopoulosThe accurate design of earth–space systems requires a comprehensive understanding of the various propagation media and phenomena that differ depending on frequencies and types of applications. The choice of the relevant channel models is crucial in the design process and constitutes a key step in performance evaluation and testing of earth–space systems. The subject of this book is built around the two characteristic cases of satellite systems: fixed satellites and mobile satellite systems. <P><P>Radio Wave Propagation and Channel Modeling for Earth–Space Systems discusses the state of the art in channel modeling and characterization of next-generation fixed multiple-antennas and mobile satellite systems, as well as propagation phenomena and fade mitigation techniques. The frequencies of interest range from 100 MHz to 100 GHz (from VHF to W band), whereas the use of optical free-space communications is envisaged.Examining recent research advances in space-time tropospheric propagation fields and optical satellite communication channel models, the book covers land mobile multiple antennas satellite- issues and relative propagation campaigns and stratospheric channel models for various applications and frequencies. It also presents research and well-accepted satellite community results for land mobile satellite and tropospheric attenuation time-series single link and field synthesizers.The book examines aeronautical communications channel characteristics and modeling, relative radio wave propagation campaigns, and stratospheric channel model for various applications and frequencies. Propagation effects on satellite navigation systems and the corresponding models are also covered.
RADIO--Robots in Assisted Living: Unobtrusive, Efficient, Reliable and Modular Solutions for Independent Ageing
by Vangelis Karkaletsis Stasinos Konstantopoulos Nikolaos S. Voros Roberta Annicchiarico Maria Dagioglou Christos P. AntonopoulosThis book describes a unique approach to bring robotic technology into elders’ daily lives. Low cost components and low cost robotic assistants are effectively combined to offer high quality services to elders and people in need. The book presents in a comprehensive way how technology can be used for developing a new healthcare paradigm where high quality services are offered at home, thus reducing the ever-increasing hospitalization cost of the elders and the people with chronic diseases.
Radio, Public Life and Citizen Deliberation in South Africa (Routledge Contemporary South Africa)
by Sarah ChiumbuThis book critically analyses the important role of radio in public life in post-apartheid South Africa. As the most widespread and popular form of communication in the country, radio occupies an essential space in the deliberation and the construction of public opinion in South Africa. From just a few state-controlled stations during the apartheid era, there are now more than 100 radio stations, reaching vast swathes of the population and providing an important space for citizens to air their views and take part in significant socio-economic and political issues of the country. The various contributors to this book demonstrate that whilst print and television media often serve elite interests and audiences, the low cost and flexibility of radio has helped it to create a ‘common’ space for national dialogue and deliberation. The book also investigates the ways in which digital technologies have enhanced the consumption of radio and produced a sense of imagined community for citizens, including those in marginalised communities and rural areas. This book will be of interest to researchers with an interest in media, politics and culture in South Africa specifically, as well as those with an interest in broadcast media more generally.
Radio Propaganda and the Broadcasting of Hatred
by Keith SomervilleAn exposition and analysis of the development of propaganda, focusing on how the development of radio transformed the delivery and impact of propaganda and led to the use of radio to incite hatred and violence.
Radio Navigation Systems for Airports and Airways (Springer Aerospace Technology)
by Oleg Nicolaevich SkrypnikThis book highlights the design principles of ground based radio-navigation systems used in solving navigation tasks in the airfield and on air routes. Mathematical correlations are illustrated that describe its operation, peculiarities of disposition, main technical characteristics, generalized structural diagrams as well as the inter-operation with onboard equipment. Examples of building, construction, functional diagrams, and characteristics of Russian made radio-navigation systems are discussed. This book is written for students of electronics and aviation disciplines. It can also be useful for aviation specialists as well as for those interested in air radio-navigation.
Radio Monitoring
by Alexander Ashikhmin Vladimir Kozmin Sergey M. Smolskiy Anatoly RembovskyRadio Monitoring: Problems, Methods, and Equipment offers a unified approach to fundamental aspects of Automated Radio Monitoring (ARM). The authors discuss the development, modeling, design, and manufacture of ARM systems. Data from established and recent research are presented and recommendations are made on methods and approaches for solving common problems in ARM. The authors also provide classification and detailed descriptions of modern high-efficient hardware-software ARM equipment, including the equipment for detection, radio direction-finding, parameters measurement and their analysis, and the identification and localization of the electromagnetic field sources. Examples of ARM equipment structure, applications, and software are provided to manage a variety of complicated interference environment in the industrial centers, inside of the buildings, and in the open terrain. This book provides a reference for professionals and researchers interested in deploying ARM technology as a tool for solving problems from radio frequency spectrum usage control.
Radio Link Quality Estimation in Low-Power Wireless Networks
by Marco Antonio Zuniga Carlo Alberto Boano Claro Noda Luca Mottola Habib Youssef Hossein Fotouhi Daniele Puccinelli Anis Koubâa Kay Römer Mário Alves Nouha Baccour Thiemo VoigtThis book provides a comprehensive survey on related work for radio link quality estimation, which covers the characteristics of low-power links, the fundamental concepts of link quality estimation in wireless sensor networks, a taxonomy of existing link quality estimators and their performance analysis. It then shows how link quality estimation can be used for designing protocols and mechanisms such as routing and hand-off. The final part is dedicated to radio interference estimation, generation and mitigation.
Radio Interfaces in the Internet of Things Systems: Performance studies
by Kamil StaniecThe book gives a broad overview of the Internet of Things (IoT) concept from various angles. The book provides rationale for: the concept development; its regulatory and technical background associated aspects such as the ambient and edge intelligence; fog computing; capillary networks and machine-type communications; etc. Each of these items is then extended in further respective chapters that deal with technicalities behind them. Chapters: 2-5, 8, 10-11 are addressed to those who seek expository IoT-related information on aspects such as the pathloss calculation, narrowband radio interfaces, radiation masks, spectrum matters, medium access control, and a transmission frame construction. That section ends with an exhaustive description of the six most popular IoT systems: LoRa, Weightless, SigFox, NB-IoT, LTE-M(TC) and EC-GSM IoT. Specialists and network designers may find chapters 6 and 7 interesting where a novel methodology is proposed for testing narrowband IoT systems performance for immunity to electromagnetic interference (EMI) and multipath propagation, both emulated in artificial conditions of the anechoic and the reverberation chamber.
Radio Frequency Multiple Access Techniques Made Easy (SpringerBriefs in Electrical and Computer Engineering)
by Saleh FaruqueThis book provides a comprehensive overview of multiple access techniques used in the cellular industry. The usage of multiple access techniques in telecommunications enables many users to share the same spectrum in the frequency domain, time domain, code domain or phase domain. Licenses are given, by the FCC, to operate wireless communication systems over given bands of frequencies, with the smaller bands, (channels), reused to provide services to other users. Thus, bandwidth efficiency is vital, as the speed and size of digital data networks continue to expand. This brief also uses numerous illustrations to bring students up-to-date in the practical applications of multiple access techniques, which can then be put to work in the industry. Primarily, electrical engineering students who study telecommunications, as well as engineers and designers working in wireless communications, would find this book useful.
Radio Frequency Integrated Circuit Design for Cognitive Radio Systems
by Amr FahimThis book fills an information gap on cognitive radios, since the discussion focuses on the implementation issues that are unique to cognitive radios and how to solve them at both the architecture and circuit levels. This is the first book to describe in detail cognitive radio systems, as well as the circuit implementation and architectures required to implement such systems. Throughout the book, requirements and constraints imposed by cognitive radio systems are emphasized when discussing the circuit implementation details. This is a valuable reference for anybody with background in analog and radio frequency (RF) integrated circuit design, needing to learn more about integrated circuits requirements and implementation for cognitive radio systems.
Radio Frequency Identification
by Michael Hutter Jörn-Marc SchmidtThis book constitutes the proceedings of the 9th Workshop on RFID Security and Privacy, RFIDsec 2013, held in Graz, Austria, in July 2013. The 11 papers presented in this volume were carefully reviewed and selected from 23 submissions. RFIDsec deals with topics of importance to improving the security and privacy of RFID, NFC, contactless technologies, and the Internet of Things. RFIDsec bridges the gap between cryptographic researchers and RFID developers.
Radio-Frequency Human Exposure Assessment
by Joe WiartNowadays approximately 6 billion people use a mobile phone and they now take a central position within our daily lives. The 1990s saw a tremendous increase in the use of wireless systems and the democratization of this means of communication. To allow the communication of millions of phones, computers and, more recently, tablets to be connected, millions of access points and base station antennas have been extensively deployed. Small cells and the Internet of Things with the billions of connected objects will reinforce this trend. This growing use of wireless communications has been accompanied by a perception of risk to the public from exposure to radio frequency (RF) electromagnetic field (EMF). To address this concern, biomedical research has been conducted. It has also been important to develop and improve dosimetry methods and protocols that could be used to evaluate EMF exposure and check compliance with health limits. To achieve this, much effort has was made in the 1990s and 2000s. Experimental and numerical methods, including statistical methods, have been developed. This book provides an overview and description of the basic and advanced methods that have been developed for human RF exposure assessment. It covers experimental, numerical, deterministic and stochastic methods.
Radio Frequency Channel Coding Made Easy
by Saleh FaruqueThis book introduces Radio Frequency Channel Coding to a broad audience. The author blends theory and practice to bring readers up-to-date in key concepts, underlying principles and practical applications of wireless communications. The presentation is designed to be easily accessible, minimizing mathematics and maximizing visuals.
Radio Frequency Cell Site Engineering Made Easy (SpringerBriefs in Electrical and Computer Engineering)
by Saleh FaruqueThis book introduces Radio Frequency Cell Site Engineering to a broad audience. The author blends theory and practice to bring readers up-to-date in key concepts, underlying principles and practical applications of wireless communications. The presentation is designed to be easily accessible, minimizing mathematics and maximizing visuals.