A directory of the best genealogy and history sites on the web.

Lists sites of archives, libraries, institutions, genealogical and historical societies, and family associations around the world.

Do information and communication technologies networks really lead to a weakening of the nation-state? This volume revisits the 'retreat of the state' thesis and tests its validity in the 21st century. It will intrigue the reader with expert-level analysis, providing historical context and conceptualizing trends and social dynamics.

Cloud Computing: Concepts, Technology, Security & Architecture Cloud computing has become an integral and foundational part of information technology. The majority of digital business activity and technology innovation occurs with the involvement of contemporary cloud environments that provide highly sophisticated automated technology infrastructure and a vast range of technology resources. To successfully build upon, interact with, or create a cloud environment requires an understanding of its common inner mechanics, architectural layers, models, and security controls. It also requires an understanding of the business and economic factors that justify the adoption and real-world use of clouds and cloud-based products and services. In Cloud Computing: Concepts, Technology, Security & Architecture, Thomas Erl, one of the world's top-selling IT authors, teams up with cloud computing expert Eric Barceló Monroy and researchers to break down proven and mature cloud computing technologies and practices into a series of well-defined concepts, technology mechanisms, and technology architectures. Comprehensive coverage of containerization and cybersecurity topics is also included. All chapters are carefully authored from an industry-centric and vendor-neutral point of view. In doing so, the book establishes concrete, academic coverage with a focus on structure, clarity, and well-defined building blocks for mainstream cloud computing and containerization platforms and solutions. With nearly 370 figures, 40 architectural models, and 50 mechanisms, this indispensable guide provides a comprehensive education of contemporary cloud computing, containerization, and cybersecurity that will never leave your side.

Master the concepts and techniques that will help you gain the LX0-103 and LX0-104 certifications on your first attempt Key FeaturesGet a clear understanding of how to achieve the Linux+ certificationExplore system architecture, shell scripts, data management, and Linux securityWork through practice and mock tests to pass both LX0-103 and LX0-104 examsBook Description Linux+ certification demonstrates technical competency and provides a broad awareness of Linux operating systems. Professionals who have achieved the Linux+ certification exhibit all-important knowledge of installation, operation, administration, and troubleshooting services. The CompTIA Linux+ Certification Guide is an overview of the certification that gives you insights into the system architecture. You’ll understand how to install and uninstall Linux distributions, followed by working with various package managers. Once you’ve grasped all this, you’ll move on to manipulating files and processes at command-line interface (CLI) and creating, monitoring, killing, restarting, and modifying processes. As you progress, you’ll be equipped to work with display managers and learn how to create, modify, and remove user accounts and groups, as well as understand how to automate tasks. The last set of chapters helps you configure dates and set up local and remote system logging. In addition to this, you’ll explore different internet protocols, along with discovering network configuration, security administration, Shell scripting, and SQL management. By the end of this book, you’ll not only have got to grips with all the modules using practice questions and mock exams, but you’ll also be well prepared to pass the LX0-103 and LX0-104 certification exams. What you will learnUnderstand the Linux system architecture Install, upgrade, and manage Linux system packagesConfigure devices and maintain the Linux filesystemManage the Shell environment, write scripts, and manage dataSet user interfaces and desktops in the Linux operating systemAutomate system admin tasks and manage essential system servicesManage SQL server on Linux and log locally and remotely with rsyslogdAdminister network and local securityWho this book is for The CompTIA Linux+ Certification Guide is for you if you want to gain the CompTIA Linux+ certificate. This guide is also for system administrators and rookie Linux professionals interested in enhancing their Linux and Shell scripting skills. No prior knowledge of Linux is needed, although some understanding of Shell scripting would be helpful.

This volume contains 16 carefully refereed articles by participants in the Special Semester and the AMS Special Session on Real Algebraic Geometry and Ordered Structures held at Louisiana State University and Southern University (Baton Rouge). The 23 contributors to this volume were among the 75 mathematicians from 15 countries who participated in the special semester. Topics include the topology of real algebraic curves (Hilbert's 16th problem), moduli of real algebraic curves, effective sums of squares of real forms (Hilbert's 17th problem), efficient real quantifier elimination, subanalytic sets and stratifications, semialgebraic singularity theory, radial vector fields, exponential functions and valuations on nonarchimedean ordered fields, valued field extensions, partially ordered and lattice-ordered rings, rings of continuous functions, spectra of rings, and abstract spaces of (higher-level) orderings and real places. This volume provides a good overview of the state of the art in this area in the 1990s. It includes both expository and original research papers by top workers in this thriving field. The authors and editors strived to make the volume useful to a wide audience (including students and researchers) interested in real algebraic geometry and ordered structures-two subjects that are obviously related, but seldom brought together.