Das Buch ist eine unkonventionelle, auf intuitives Verstandnis ausgerichtete Einfuhrung in die theoretischen Grundlagen der praktischen Aspekte der Informatik. Dabei geht es nicht ausschliesslich um die Entwicklung von Software. Beim Leser werden keine besonderen Vorkenntnisse vorausgesetzt. Es werden etwa Informationstheorie, Codierungstheorie, Zahlendarstellung und Numerik, Boolesche Algebra, Fuzzy-Logik sowie Quanten-Computer behandelt, wobei gewahrleistet bleibt, dass leicht verstandlich wird, wie auf diesem theoretischen Unterbau die praktische Realisierung eines Computers sowohl in Hardware als auch in Software erfolgen kann. Fur die funfte Auflage wurde das Buch komplett uberarbeitet und auf den neuesten Stand gebracht."

Innovations are adopted when users integrate them in meaningful ways into existing social practices. Histories of major technological innovations show that often the creative initiative of users and user communities becomes the determining factor in the evolution of particular innovations. The evolutionary routes of the telephone, the Internet, the World Wide Web, email, and the Linux operating system all took their developers by surprise. Articulation of these technologies as meaningful products and systems was made possible by innovative users and unintended resources. Iterative and interactive models have replaced the traditional linear model of innovation during the last decade. Yet, heroic innovators and entrepreneurs, unambiguous functionality of products, and a focus on the up-stream aspects of innovation still underlie much discussion on innovation, intellectual property rights, technology policy, and product development. Coherent conceptual, theoretical and practical conclusions from research on knowledge creation, theory of learning, history of technology, and the social basis of innovative change have rarely been made. This book argues that innovation is about creating meaning; that it is inherently social; and is grounded in existing social practices. To understand the social basis of innovation and technology development we have to move beyond the traditional product-centric view on innovations. Integrating concepts from several disciplinary perspectives and detailed analyses of the evolution of Internet-related innovations, including packet-switched computer networks, World Wide Web, and the Linux open source operating system, the book develops foundations for a new theoretical and practical understanding of innovation. For example, it shows that innovative development can occur in two qualitatively different ways, one based on evolving specialization and the other based on recombination of existing socially produced resources. The expanding communication and collaboration networks have increased the importance of the recombinatory mode making mobility of resources, sociotechnical translation mechanisms, and meaning creation in communities of practice increasingly important for innovation research and product development.

Novell has had a long history of providing corporate server/network/administration solutions. With Novellas recent SUSE Linux acquisitions, Novell has turned over a new leaf - their best-selling server software has been reinvented in Linux And the Novell Open Enterprise Server features the best of both worlds, including top features from NetWare Components, SUSE Linux Enterprise Server 9 Components, and Novell Services.Author Sander van Vugt provides comprehensively covers this new server product, and takes you through all of the necessary setup stages to get your server running. He then spends ample time discussing the core features like eDirectory, Novell Storage Services, iPrint, and iManager. van Vugt also examines vital administration topics like software management and security, and services like Virtual Directory, Clustering, and Apache Web Server. He even provides an overview of CLE certification, and strategies to prepare for it.

Docker does for DevOps what Rails did for web development--it gives you a new set of superpowers. Gone are works on my machine woes and lengthy setup tasks, replaced instead by a simple, consistent, Docker-based development environment that will have your team up and running in seconds. Gain hands-on, real-world experience with a tool that's rapidly becoming fundamental to software development. Go from zero all the way to production as Docker transforms the massive leap of deploying your app in the cloud into a baby step. Docker makes life as a Ruby and Rails developer easier. It helps build, ship, and run your applications, solving major problems you face every day. It allows you to run applications at scale, adding new resources as needed. Docker provides a reliable, consistent environment that's guaranteed to work the same everywhere. Docker lets you do all things DevOps without needing a PhD in infrastructure and operations. Want to spin up a cluster to run your app? No problem. Scale it up or down at will? You bet. Start by running a Ruby script without having Ruby installed on the local machine. Then Dockerize a Rails application and run it using containers, including creating your own custom Docker images tailored for running Rails apps. Describe your app declaratively using Docker Compose, specifying the software dependencies along with everything needed to run the application. Then set up continuous integration, as well as your deployment pipeline and infrastructure. Along the way, find out the best practices for using Docker in development and production environments. This book gives you a solid foundation on using Docker and fitting it into your development workflow and deployment process. What You Need: All you need is a Windows, Mac OS X or Linux machine to do development on. This book guides you through the process of installing Docker. Some basic familiarity with Linux/Unix is recommended even if you're using a Windows machine

The human-computer interactions are more and more present in our everyday life, and lead to many conceptual and methodological problems for the designers and evaluators of interactive systems. This book is about Human-Computer Interaction in Transport domain, in which the traveler becomes a user of information systems, particularly before and during the travel(s). This book will focus on traveler information and personalized systems, using a human-centered design approach.

Learn how to develop modern object-oriented applications with PHP using test-driven development (TDD) and behavior-driven development (BDD) aided by mature reusable components Key Features Create clean code based on components' reusability to create large-scale enterprise applications Make effective use of design patterns in an object-oriented software Understand the division of a PHP web application structure in layers to build customized websites and apps for various business needs Book DescriptionConsidered the next generation of the Zend framework, Laminas is a high-performance PHP framework for creating powerful web applications with an evolutive architecture. This book takes a hands-on approach to equip you with the knowledge of the Laminas framework necessary to start building web applications based on the reuse of loosely coupled components. You'll learn how to create the basic structure of a PHP web application divided into layers, understand Laminas' MVC components, and be able to take advantage of the Eclipse platform as a method for developing with Laminas. Step by step, you'll build an e-commerce application based on the technical requirements of a fictional business, and get to grips with implementing those requirements using Laminas components. By the end of this web development book, you'll be able to build a completely secured MVC application in PHP language using Laminas. What you will learn Discover how object-relational mapping is implemented with laminas-db Understand behavior-driven development concepts to sharpen your skills Create lean controllers and flexible views Build complete models and reusable components Explore the Eclipse platform for developing with Laminas Find out how easy it is to generate HTML forms with laminas-form Practice test-driven development to write precise programs Who this book is forThis book is best suited for programming beginner or developers with some experience looking to create clean-coded object-oriented web applications. Knowledge of basic PHP syntax, specifically variables, control structures, and functions, will aid you in understanding the concepts covered.

Dieses Buch bietet einen leichten Einstieg in UNIX und UNIX-Derivate wie Linux, Solaris, HP-UX oder AIX. Aus der Vielfalt der Kommandos und den fast unendlichen Variationsm glichkeiten ist das Wesentliche f r den Anwender herausgefiltert. Dabei sind die Entwicklungen unter UNIX und darauf aufbauender Software ber cksichtigt. An Beispielen aus der Praxis wird gezeigt, wie einfach man mit den Werkzeugen, die UNIX bietet, eine eigene Arbeitsumgebung schaffen kann, die funktionell ist und in der man sich wohlf hlt. Besonders beliebt ist die herausnehmbare Kurzreferenz mit h ufig benutzten Kommandos, sie erleichtert die praktische Arbeit sehr.

AusfA1/4hrlich werden fA1/4r LINUX 2.2 alle Details der Betriebssystemarchitektur, der Installation, der Linux-Basiskommandos und der typischen Unix-Entwicklungs- und Anwendungspakete erklArt.
Der Autor erlAutert auAerdem die Architektur von Linux 2.2 und zeigt die Komponenten und die Administration der Linux Desktops Looking Glass, CDE, KDE 1.1 und GNOME 1.0 auf.

Der Autor beschreibt erstmals eine vollstandige Gesamtlosung, die in der Industrie zur Einfuhrung eines DCE-Systems als Security-Middleware fur Client-Server-Systeme entwickelt wurde. Aus der Praxis heraus werden konkrete Fragestellungen, Alternativen und Design-Entscheidungen vorgestellt. Im Mittelpunkt steht die mit DCE in heterogenen Systemen umsetzbare applikatorische Sicherheit.

Das digitale Kommunikationsnetz ISDN ist bereits den Kinderschuhen entwachsen und und findet regen Zuspruch. Dies bringt auch eine Reihe von Fragen mit sich, vor allem nach Einsatzmoglichkeiten und Kompatibilitat. Der Autor gibt einen Uberblick uber die ISDN-Technik im Teilnehmerbereich, beschreibt die Komponenten und ihre Schnittstellen und gibt Hinweise zur Prufung der Kompatibilitat. Des weiteren werden die Moglichkeiten der Nutzung eines ISDN-Anschlusses am PC erlautert. Dabei werden die Besonderheiten der verschiedenen Betriebssysteme verglichen und CAPI als wichtigste ISDN-Schnittstelle am Computer dargestellt. Schliesslich werden verschiedene ISDN-Applikationen fur den Internet-Zugang, Home Office und Telearbeitsplatz vorgestellt."

Die Korn-Shell ermoeglicht eine effektive Nutzung von UNIX-Systemen. Nicht nur fur den Systemprogrammierer, auch fur jeden UNIX-Anwender sind Kenntnisse der Shell-Funktionsweise und -Programmierung unabdingbar. Der Leser wird in diesem Buch Schritt fur Schritt in den Umgang mit der Korn-Shell eingefuhrt, wobei grundlegende UNIX-Kenntnisse vorausgesetzt werden. Sachverhalte, die erfahrungsgemass gerade Einsteigern Schwierigkeiten bereiten, werden anhand von zahlreichen, nachvollziehbaren Beispielen verdeutlicht. Der Leser erlernt anhand einer komplexen Anwendung - einer Adressverwaltung - das Erstellen auch umfangreicher Shell-Prozeduren. Diese sind auf einer Diskette dem Buch beigelegt und koennen gleich am Terminal ausprobiert werden.

Die bewahrte Standardeinfuhrung in das Betriebssystem UNIX wurde in der vorliegenden Ausgabe auf die Besonderheiten der UNIX-Variante AIX von IBM zugechnitten, d.h. um weniger relevante Kapitel gekurzt und um spezielle Aspekte von AIX angereichert. Behandelt werden die Konzepte und die Terminologie von AIX UNIX. Alle Kommandos (UNIX V.4) werden in einer UEbersicht dargestellt, haufig gebrauchte Kommandos und Funktionen detailliert beschrieben und an Beispielen erlautert. Den Themen Editoren, Shells und X Window System sind jeweils eigene Kapitel gewidmet, und es wird ein erster UEberblick uber den graphischen UNIX-Desktop gegeben. Das Buch soll dem Benutzer von AIX UNIX den Einstieg erleichtern und als umfassendes, kompaktes Nachschlagewerk dienen.

Develop cloud applications based on the most popular Azure services, including hosting web applications, running containers, storing data using both relational and non-relational databases, and much more Key Features Take a modern approach to Azure Cloud development and management Get a detailed introduction to services such as web hosting, databases, and serverless platforms Get the hang of cloud services with this practical, developer-centric guide for Azure developers Book DescriptionMicrosoft Azure is currently one of the fastest growing public cloud service providers thanks to its sophisticated set of services for building fault-tolerant and scalable cloud-based applications. This second edition of Azure for Developers will take you on a journey through the various PaaS services available in Azure, including Azure App Service, Azure Functions, and Azure SQL Databases, showing you how to build a complete and reliable system with ease. Throughout the book, you'll discover ways to enhance your skills when building cloud-based solutions leveraging different SQL/NoSQL databases, serverless and messaging components, containerized solutions, and even search engines such as Azure Cognitive Search. That's not all!! The book also covers more advanced scenarios such as scalability best practices, serving static content with Azure CDN, and distributing loads with Azure Traffic Manager, Azure Application Gateway, and Azure Front Door. By the end of this Azure book, you'll be able to build modern applications on the Azure cloud using the most popular and promising technologies to make your solutions reliable, stable, and efficient. What you will learn Identify the Azure services that can help you get the results you need Implement PaaS components - Azure App Service, Azure SQL, Traffic Manager, CDN, Notification Hubs, and Azure Cognitive Search Work with serverless components Integrate applications with storage Put together messaging components (Event Hubs, Service Bus, and Azure Queue Storage) Use Application Insights to create complete monitoring solutions Secure solutions using Azure RBAC and manage identities Develop fast and scalable cloud applications Who this book is forThis book is for developers and IT professionals who want to learn Microsoft Azure by developing applications based on various cloud services. Prior knowledge of software development and the basics of software architecture and Azure services give you an advantage.

Mastering NativeScript helps readers master the NativeScript framework for faster and more robust mobile app development. Mobile devices have progressed from a mere means of communication to becoming a critical business tool in recent years. People are increasingly glued to their smartphones as technology advances at breakneck speed. The significance of mobile app development cannot be overstated. And when it comes to mobile app development, NativeScript is a hot topic. NativeScript was introduced by Telerik, and it allows you to develop truly native apps for iOS and Android under a single code base using JavaScript or TypeScript, XML, and a subset of CSS. The charm of NativeScript is that it enables us to code once for multiple platforms (iOS 7.1 and Android 4.1), simultaneously sharing code amongst them while still allowing developers to add platform-specific instructions with flawless execution. As a result, you may release an app for both platforms using a single code base. NativeScript is comprised of three parts: a JavaScript (JS) virtual machine, a runtime, and a bridge module. The JS virtual machine is used for interpretation and execution of JavaScript code. The bridge module then converts the calls to platform-specific API calls and returns the outcome to the caller. NativeScript is a very appealing paradigm, and is rising in popularity as we speak. It can be used to construct practically any program, including communication apps (news and social networking), gaming applications (Chess, Tic-Tac-Toe, Pinball), and chat apps. It can also handle maps and geolocation apps. With Mastering NativeScript, learning NativeScript becomes straightforward, which will undoubtedly help readers advance their careers. The Mastering Computer Science series is edited by Sufyan bin Uzayr, a writer and educator with over a decade of experience in the computing field.

Die Autoren nehmen die wesentlichen Neuheiten von Windows 95 unter die Lupe. Dabei wird vor allem herausgestellt, welche Veranderungen und Vorteile ein Einstieg in oder Umstieg zu Windows 95 bringt. Fachkundig und praxisorientiert erklaren die Autoren die Grundlagen von Win 95 und wecken so ein tieferes Verstandnis fur das Betriebssystem. Wichtige Begriffe im Zusammenhang mit der Betriebssystem-Strategie von Microsoft (OLE2, WOSA, COM, CAIRO) werden geklart und anhand von Win 95 veranschaulicht. Besonders hervorzuheben ist die fundierte Darstellung der Multimedia- und Netzwerkfahigkeiten von Windows 95."

Praxisbezogen mit vielen Beispielen werden neben den wichtigsten Grundlagen und Konzepten von UNIX die Beschaffung, Installation und Konfiguration von LINUX beschrieben. Schwerpunkte bilden dabei die graphische Oberflache, die Netzwerkfahigkeit und die Tools des GNU-Projekts. Ausserdem sind Entwicklungsumgebung, LINUX-Applikationen und LINUX-Kommandos enthalten.
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Dieser dritte Teil der vierteiligen Einfuhrung in die Informatik behandelt verteilte informationsverarbeitende Systeme und systemnahe Programmierung. Nach den Grundbegriffen verteilter Systeme und den zugrundeliegenden mathematischen Modellen werden elementare Beschreibungstechniken fur Systeme, z.B. Petri-Netze und die Hoare'sche Notation fur kommunizierende, sequentielle Programme, vorgestellt sowie die Programmierung parallel ablaufender Programme. Weiter werden typische Aspekte der systemnahen Programmierung wie Aufbau und Wirkungsweise von Betriebssystemen besprochen sowie die syntaktischen und semantischen Aspekte der Implementierung von Programmiersprachen. Dabei werden fur eine einfache funktionale Sprache beispielhaft ein Ubersetzer und ein Interpretierer angegeben.

F}r UNIX-Anwender stellt das X/Motif-Fenstersystem die Standard-Arbeitsumgebung auf dem Rechner zur Verf}gung. Deren optimale Einrichtung und Anpassung ist daher eine entscheidende Voraussetzung f}r ein effizientes Arbeiten. Anhand zahlreicher Beispiele vermittelt der Autor praxisbezogene Kenntnisse im Umgang mit X/Motif, ohne den Leser mit der Programmierung des Systems zu belasten. Dabei wird vorallem auf folgende Gebiete eingegangen: - individuelle Anpassung von Anwendungen an die eigenen Bed}rfnisse des Nutzers - die optimale Einrichtung einer X/Motif-Arbeitsumgebung - die Einrichtung von mehreren Arbeitspl{tzen in vernetzten Systemen. Das Buch richtet sich an alle Anwender, die die volle Leistungsf{higkeit dieses Systems nutzen m-chten, sowie an Systemadministratoren, die f}r die Netzwerkbetreuung zust{ndig sind.

Develop a deep understanding of Kubernetes and the cloud native ecosystem, and pass the CKA exam with confidence with this end-to-end study guide Key Features Get to grips with the core concepts of Kubernetes API primitives Deploy, configure, manage, and troubleshoot Kubernetes clusters Cement your credibility in the job market by becoming a Certified Kubernetes Administrator Book DescriptionKubernetes is the most popular container orchestration tool in the industry. The Kubernetes Administrator certification will help you establish your credibility and enable you to efficiently support the business growth of individual organizations with the help of this open source platform. The book begins by introducing you to Kubernetes architecture and the core concepts of Kubernetes. You'll then get to grips with the main Kubernetes API primitives, before diving into cluster installation, configuration, and management. Moving ahead, you'll explore different approaches while maintaining the Kubernetes cluster, perform upgrades for the Kubernetes cluster, as well as backup and restore etcd. As you advance, you'll deploy and manage workloads on Kubernetes and work with storage for Kubernetes stateful workloads with the help of practical scenarios. You'll also delve into managing the security of Kubernetes applications and understand how different components in Kubernetes communicate with each other and with other applications. The concluding chapters will show you how to troubleshoot cluster- and application-level logging and monitoring, cluster components, and applications in Kubernetes. By the end of this Kubernetes book, you'll be fully prepared to pass the CKA exam and gain practical knowledge that can be applied in your day-to-day work. What you will learn Understand the fundamentals of Kubernetes and its tools Get hands-on experience in installing and configuring Kubernetes clusters Manage Kubernetes clusters and deployed workloads with ease Get up and running with Kubernetes networking and storage Manage the security of applications deployed on Kubernetes Find out how to monitor, log, and troubleshoot Kubernetes clusters and apps among others Who this book is forThis book is for application developers, DevOps engineers, data engineers, and cloud architects who want to pass the CKA exam and certify their Kubernetes Administrator skills in the market. Basic knowledge of Kubernetes is recommended to get the most out of this book.

UNIX besitzt eine ungeheure Detailfulle. Es fallt schwer, einen roten Faden durch das Thema zu legen und eine Auswahl zu treffen, die einerseits umfassend und andererseits fur den Leser verdaulich ist. Das vorliegende Buch leistet diese Vorarbeit zum Verstandnis des Systems UNIX und seiner Manuale sowie zu seinem praktischen Einsatz. Hauptaugenmerk liegt dabei auf der sinnvollen Reihenfolge der Stoffvermittlung. Ausgestattet mit diesem Buch und einem Terminal soll der Leser im Alleingang die Materie UNIX bis zu einem Grad durchwandern, der ihn langsam aber sicher zum Spezialisten werden lasst. Wer dieses Buch durchgearbeitet hat, kann sich getrost als UNIX-Kenner bezeichnen, der auch schon einige "Spitzfindigkeiten drauf hat".