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This practical new book offers the distributed-computing fundamental knowledge for individuals to connect with one another in a more secure and efficient way than with traditional blockchains. These new forms of secure, scalable blockchains promise to replace centralized institutions to connect individuals without the risks of user manipulations or data extortions. The techniques taught herein consist of enhancing blockchain security and making blockchain scalable by relying on the observation that no blockchain can exist without solving the consensus problem. First, the state-of-the-art of consensus protocols are analyzed, hence motivating the need for a new family of consensus protocols offering strong (deterministic) guarantees. Second, a didactic series of classic blockchain vulnerabilities is presented to illustrate the importance of novel designs better suited for the adversarial environment of open networks. These cutting-edge solutions are illustrated through the Redbelly blockchain design, which solves a different problem from the classic Byzantine consensus problem of 1982 and which delivers-in the modern blockchain context-high performance at large scale. Topics and features: Covers the combination of security and distributed computing to devise the new generation of blockchains Shows how blockchain has shed new light on decades of research in distributed systems Provides instruction on the security needed by the industry to use blockchains in production Explains didactically the necessary ingredients to make blockchain efficient at large scale Helps fill the gap of knowledge in the highly demanded blockchain sector This unique volume contains the building blocks to design secure and scalable blockchains. As such, it is dedicated to developers, application designers, and computer scientists and requires only a minimal undergraduate level in mathematics and computer science. Vincent Gramoli is an Australian Research Council Future Fellow at the University of Sydney and the Chief Technology Officer of Redbelly Network. He teaches the Blockchain Scalability course on Coursera.

Computer science --- toegepaste informatica --- computers --- computerkunde --- Blockchains (Databases)

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Automation serves as an essential component in business to achieve company goals with qualitatively and quantitatively better results. The use of automation is also in the field of desktop publishing (DTP) indispensable to achieve cost savings in the company and to improve the final results through standardization and error reduction, as well as to relieve employees with regard to laborious and monotonous tasks. This essential aims to summarize the many possibilities of automation in the field of DTP, focusing on repetitive artwork processes in prepress. The content Introduction to the topics of desktop publishing and automation Software-supported automation methods in desktop publishing with focus on Adobe applications Impulses for dealing with the structural change from manual to automated processes in the company The target groups Media designers, software developers, IT system administrators, IT decision-makers The author Ennis Gündoğan studied Business Information Systems and is an IHK-certified Media Designer for Digital and Print. In his job, he currently combines know-how from both fields of activity to realize software projects in the context of DTP automation.

Journalism --- Mass communications --- Computer science --- Computer. Automation --- sociale media --- computers --- landbouw --- media --- computerkunde --- Desktop publishing.

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This survey of computability theory offers the techniques and tools that computer scientists (as well as mathematicians and philosophers studying the mathematical foundations of computing) need to mathematically analyze computational processes and investigate the theoretical limitations of computing. Beginning with an introduction to the mathematisation of "mechanical process" using URM programs, this textbook explains basic theory such as primitive recursive functions and predicates and sequence-coding, partial recursive functions and predicates, and loop programs. Features: Extensive and mathematically complete coverage of the limitations of logic, including Gödel's incompleteness theorems (first and second), Rosser's version of the first incompleteness theorem, and Tarski's non expressibility of "truth" Inability of computability to detect formal theorems effectively, using Church's proof of the unsolvability of Hilbert's Entscheidungsproblem Arithmetisation-free proof of the pillars of computability: Kleene's s-m-n, universal function and normal form theorems - using "Church's thesis" and a simulation of the URM ("register machine") by a simultaneous recursion. These three pivotal results lead to the deeper results of the theory Extensive coverage of the advanced topic of computation with "oracles" including an exposition of the search computability theory of Moschovakis, the first recursion theorem, Turing reducibility and Turing degrees and an application of the Sacks priority method of "preserving agreements", and the arithmetical hierarchy including Post's theorem Cobham's mathematical characterisation of the concept deterministic polynomial time computable function is fully proved A complete proof of Blum's speed-up theorem.

Engineering sciences. Technology --- Computer science --- Computer. Automation --- toegepaste informatica --- complexiteit --- computers --- filosofie --- ingenieurswetenschappen --- computerkunde --- Computable functions.

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Design and develop a complex trading system from idea to operation. Old approaches were based on manually searching for strategy ideas. This book shows you how to create a system that will generate, optimize, and launch profitable strategies into a fully automatic mode. Imagine a system that only requires access to the Internet and electricity from a trader. This book describes the architecture and features of such a system and provides recommendations for further development. Most books cover only the implementation stage and overlook the design and maintenance of these systems. Here, you’ll walk through the entire process of creating a complex, scalable and easily supported system. For example, you’ll design an application based on microservice architecture and learn about development environments. You’ll also examine the advantages of horizontal scaling in the context of creating trading systems. Along the way, you’ll set up Kubernetes, connect the monitoring system. and understand the intricacies of continuous integration and continuous delivery. Testing and identifying only dozens of strategies is a thing of the past. Algorithmic Trading Systems and Strategies: A New Approach shows you how to analyze thousands in the same amount of time. .

Computer science --- computers --- computerkunde --- Investments --- Application software --- Data processing. --- Development --- Computer programs.

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The thesis gives the first experimental demonstration of a new quantum bit ("qubit") that fuses two promising physical implementations for the storage and manipulation of quantum information - the electromagnetic modes of superconducting circuits, and the spins of electrons trapped in semiconductor quantum dots - and has the potential to inherit beneficial aspects of both. This new qubit consists of the spin of an individual superconducting quasiparticle trapped in a Josephson junction made from a semiconductor nanowire. Due to spin-orbit coupling in the nanowire, the supercurrent flowing through the nanowire depends on the quasiparticle spin state. This thesis shows how to harness this spin-dependent supercurrent to achieve both spin detection and coherent spin manipulation. This thesis also represents a significant advancement to our understanding and control of Andreev levels and thus of superconductivity. Andreev levels, microscopic fermionic modes that exist in all Josephson junctions, are the microscopic origin of the famous Josephson effect, and are also the parent states of Majorana modes in the nanowire junctions investigated in this thesis. The results in this thesis are therefore crucial for the development of Majorana-based topological information processing.

Solid state physics --- Electronics --- Computer science --- Computer. Automation --- vaste stof --- materie (fysica) --- quantumcomputers --- computers --- computerkunde --- halfgeleiders --- Nanowires. --- Quantum electrodynamics.