Virtual machines are rapidly becoming an essential element in providing system security, flexibility, cross-platform compatibility, reliability, and resource efficiency. Designed to solve problems in combining and using major computer system components, virtual machine technologies are important to a number of disciplines, including operating systems, programming languages, and computer architecture. For example, at the process level, virtualizing technologies support dynamic program translation and platform-independent network computing. At the system level, they support multiple operating system environments on the same hardware platform and in servers. Historically, individual virtual machine techniques have been developed within the specific disciplines that employ them (in some cases they aren?t even referred to as ?virtual machines?), making it difficult to see their common underlying relationships in a cohesive way. In this text, Smith and Nair take a new approach by examining virtual machines as a unified discipline. Pulling together cross-cutting technologies allows virtual machine implementations to be studied and engineered in a well-structured manner. Topics include instruction set emulation, dynamic program translation and optimization, high level virtual machines (including Java and CLI), and system virtual machines for both single-user systems and servers.
This book focuses on video-based, corneal-reflection eye trackers - the most widely available and affordable type of system, and takes a look at a number of interesting and challenging applications in human factors, collaborative systems, virtual reality, marketing and advertising. The third edition has been extensively revised and extended, and includes new chapters on calibration accuracy, precision and correction; advanced eye movement analysis; binocular eye movement analysis; practical gaze analytics; design; GIS. Opening with useful background information, including an introduction to the human visual system and key issues in visual perception and eye movement, the author then surveys eye-tracking devices and provides a detailed introduction to the technical requirements necessary for installing a system and developing an application program.
Las redes de informacio n y comunicacio n, a trave s de Internet rompen barreras de tiempo y espacio para desarrollar actividades de ensen anza-aprendizaje. Las Tecnologi as de la Informacio n y Comunicacio n (TIC) son la herramienta principal que organizaciones e instituciones educativas han comenzado a utilizar para ofrecer cursos y programas de estudio virtuales a trave s de la web. En definitiva, el incremento de las necesidades formativas esta reclamando la creacio n de nuevas redes y formas de acceso a la ensen anza. En este sentido, las nuevas tecnologi as de apoyo a la educacio n digital se esta n convirtiendo en una de las estrategias empleadas para ello. Uno de los ejemplos ma s representativos de los nuevos medios de ensen anza utilizados en la web son los tutoriales, los cuales apoyan el proceso de aprendizaje del estudiante, ya que lo gui an a trave s de una serie de tareas que debe realizar por si mismo. En este libro se presenta el desarrollo de un tutorial interactivo en li nea para apoyar la ensen anza del lenguaje de consulta estructurado (Structured Query Language, SQL por sus siglas en ingle s).
This practical, tutorial-style book uses the Kali Linux distribution to teach Linux basics with a focus on how hackers would use them. Topics include Linux command line basics, filesystems, networking, BASH basics, package management, logging, and the Linux kernel and drivers. If you´re getting started along the exciting path of hacking, cybersecurity, and pentesting, Linux Basics for Hackers is an excellent first step. Using Kali Linux, an advanced penetration testing distribution of Linux, you´ll learn the basics of using the Linux operating system and acquire the tools and techniques you´ll need to take control of a Linux environment. First, you´ll learn how to install Kali on a virtual machine and get an introduction to basic Linux concepts. Next, you´ll tackle broader Linux topics like manipulating text, controlling file and directory permissions, and managing user environment variables. You´ll then focus in on foundational hacking concepts like security and anonymity and learn scripting skills with bash and Python. Practical tutorials and exercises throughout will reinforce and test your skills as you learn how to: - Cover your tracks by changing your network information and manipulating the rsyslog logging utility - Write a tool to scan for network connections, and connect and listen to wireless networks - Keep your internet activity stealthy using Tor, proxy servers, VPNs, and encrypted email - Write a bash script to scan open ports for potential targets - Use and abuse services like MySQL, Apache web server, and OpenSSH - Build your own hacking tools, such as a remote video spy camera and a password cracker Hacking is complex, and there is no single way in. Why not start at the beginning with Linux Basics for Hackers?
Work with blockchain and understand its potential application beyond cryptocurrencies in the domains of healthcare, Internet of Things, finance, decentralized organizations, and open science. Featuring case studies and practical insights generated from a start-up spun off from the author´s own lab, this book covers a unique mix of topics not found in others and offers insight into how to overcome real hurdles that arise as the market and consumers grow accustomed to blockchain based start-ups. You´ll start with a review of the historical origins of blockchain and explore the basic cryptography needed to make the blockchain work for Bitcoin. You will then learn about the technical advancements made in the surrounded ecosystem: the Ethereum virtual machine, Solidity, Colored Coins, the Hyperledger Project, Blockchain-as-a-service offered through IBM, Microsoft and more. This book looks at the consequences of machine-to-machine transactions using the blockchain socially, technologically, economically and politically. Blockchain Enabled Applications provides you with a clear perspective of the ecosystem that has developed around the blockchain and the various industries it has penetrated. What You´ll Learn Implement the code-base from Fabric and Sawtooth, two open source blockchain-efforts being developed under the Hyperledger Project Evaluate the benefits of integrating blockchain with emerging technologies, such as machine learning and artificial intelligence in the cloud Use the practical insights provided by the case studies to your own projects or start-up ideas Set up a development environment to compile and manage projects Who This Book Is For Developers who are interested in learning about the blockchain as a data-structure, the recent advancements being made and how to implement the code-base. Decision makers within large corporations (product managers, directors or CIO level executives) interested in implementing the blockchain who need more practical insights and not just theory.
Communications and personal information that are posted online are usually accessible to a vast number of people. Yet when personal data exist online, they may be searched, reproduced and mined by advertisers, merchants, service providers or even stalkers. Many users know what may happen to their information, while at the same time they act as though their data are private or intimate. They expect their privacy will not be infringed while they willingly share personal information with the world via social network sites, blogs, and in online communities. The chapters collected by Trepte and Reinecke address questions arising from this disparity that has often been referred to as the privacy paradox. Works by renowned researchers from various disciplines including psychology, communication, sociology, and information science, offer new theoretical models on the functioning of online intimacy and public accessibility, and propose novel ideas on the how and why of online privacy. The contributing authors offer intriguing solutions for some of the most pressing issues and problems in the field of online privacy. They investigate how users abandon privacy to enhance social capital and to generate different kinds of benefits. They argue that trust and authenticity characterize the uses of social network sites. They explore how privacy needs affect users´ virtual identities. Ethical issues of privacy online are discussed as well as its gratifications and users´ concerns. The contributors of this volume focus on the privacy needs and behaviors of a variety of different groups of social media users such as young adults, older users, and genders. They also examine privacy in the context of particular online services such as social network sites, mobile internet access, online journalism, blogs, and micro-blogs. In sum, this book offers researchers and students working on issues related to internet communication not only a thorough and up-to-date treatment of online privacy and the social web. It also presents a glimpse of the future by exploring emergent issues concerning new technological applications and by suggesting theory-based research agendas that can guide inquiry beyond the current forms of social technologies.
This engaging textbook highlights the essential need for a strong ethical framework in our approach to computer, information and engineering science. Through thought-provoking questions and case studies, the reader is challenged to consider the deeper implications arising from the use of today´s rapidly-evolving computing technologies and ever-changing communication ecosystems. This updated second edition features new material on information security, intellectual property rights, the Internet of Things, and 5G technologies. Topics and features: introduces a philosophical framework and tools for understanding and analyzing computer ethics in personal, public, and professional spheres; describes the impact of computer technology on issues of security, privacy, anonymity, and civil liberties; examines intellectual property rights in the context of computing, including the risks and liabilities associated with software; discusses such key social issues in computing as the digital divide, employee monitoring in the workplace, and risks to physical and mental health; reviews the history of computer crime, and the threat of digitally facilitated bullying, harassment, and discrimination; considers the ethical challenges arising from online social networks, mobile telecommunications, virtual reality, the Internet of Things, and 5G technologies; includes learning objectives, discussion questions and exercises throughout the book. This concise and accessible work addresses the critical ethical and moral issues important to all designers and users of computer technologies. The text incorporates the latest curricula requirements for undergraduate courses in computer science, and offers invaluable insights into the social impact and legal challenges posed by the latest generation of computing devices and networks.
Der Computertisch Virtual Alta von Rocada überzeugt durch die hohe Verabeitungsqualität. Das lichtgraue Design passt in fast jedes Büro und Home Office.Wer Büromöbel kaufen möchte, ist bei Rocada genau richtig. Denn dieser Hersteller ist dafür bekannt, dass seine Lösungen allen Ansprüchen gerecht werden. Das Sortiment umfasst zahlreiche Modelle für den Heimbedarf, aber auch für den Einsatz im Büro wie den Computer Tisch Virtual Alta. Beliebt ist dieser Computertisch vor allem in gewerblichen und technischen Büros.Der Computer Tisch Virtual Alta von Rocada ist genau auf die Bedürfnisse zugeschnitten, die im gewerblichen Bereich an ein Büromöbel gestellt werden. Passend zu diesem professionellen Umfeld wird der Tisch in Lichtgrau angeboten, das auch mit dem Rest jeder Büroeinrichtung perfekt harmonisiert. Sowohl die komplette EDV-Anlage als auch entsprechendes Zubehör lassen sich bequem auf dem Tisch unterbringen, sodass der Arbeitnehmer keine langen Wege in Kauf nehmen muss, beispielsweise um Papier zu holen.Anpassbar an jede SituationAls weiteren Vorteil dieses Modells bietet der Hersteller die Option an, dass die einzelnen Bodenelemente in einer unterschiedlichen Position und Höhe fixiert werden können. Jeder Arbeitnehmer kann so hiermit einen Arbeitsplatz gestalten, der perfekt auf seine individuellen Bedürfnisse und Ansprüche angepasst ist. Auch an nützliche Extras hat man gedacht: So verfügt die Tastaturlade über eine Stütze für die Handgelenke, was beim langen Arbeiten am PC für den Anwender angenehm ist. Außerdem gehört auch eine eigene Ablagefläche für die Maus zum professionellen Arbeiten zur Ausstattung.
Interaktive Geschäftsprozessmodellierung:Dokumentation von Prozesswissen in einer Virtual Reality-gestützten Unternehmungsvisualisierung Schriften zur EDV-orientierten Betriebswirtschaft. 2000. 2000. Stefan Leinenbach