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One of the most promising technologies to resolve the bottlenecks in traffic capacity of future wireless networks is multiple-input multiple-output (MIMO) communications and space-time processing. MIMO wireless technology has progressed from the stage of fundamental research to commercially available products within a decade. With over sixty contributors from the field, this book provides an extensive overview of the state-of-the-art in MIMO communications, ranging from its roots in antenna array processing to advanced cellular communication systems. A balanced treatment of three key areas -information theory, algorithms and systems studies, and implementation issues - has been assembled by four editors with a broad range of academic and industry experience. This comprehensive reference will appeal to practitioners, researchers, and graduate students in wireless communications.
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Het doel van data mining is het vinden van regels (of hypothesen) die niet-triviale relaties, patronen of eigenschappen van een grote hoeveelheid gegevens omschrijven, teneinde de gegevens beter te begrijpen. Inductief Logisch Programmeren (ILP) is een relationele data mining techniek gebaseerd op eerste orde logica. Logica is een krachtig en natuurlijk formalisme voor het voorstellen van kennis, wat ILP toelaat om concepten te leren die niet geleerd kunnen worden met een minder krachtig formalisme. Omwille van zijn hoge expressiviteit is de ruimte van alle mogelijke hypothesen echter zeer complex, waardoor het zoeken naar een goede hypothese een complexe taak wordt. Een van de belangrijkste factoren bij de uitvoering van ILP algoritmen is de motor die door het algoritme gebruikt wordt. Deze motor is verantwoordelijk voor het evalueren van kandidaatshypothesen (of queries) op de gegevens, en voorziet primitieven voor het ILP algoritme om de evaluatie van queries te sturen. In dit werk presenteren we verschillende technieken voor het optimaliseren van motoren gebruikt door ILP algoritmen. We combineren twee bestaande onafhankelijke technieken voor query-evaluatie: de once-transformatie, dewelke redundante uitvoering binnen dezelfde query probeert te vermijden, en query packs, dewelke redundantie in de uitvoering van meerdere queries probeert te vermijden. De algemene aanpak voor query-evaluatie is om de query te compileren naar een efficiëntere versie alvorens hem uit te voeren. We bestuderen alternatieven voor deze aanpak, en stellen een performantere compilatietechniek voor, tesamen met een luie variant die enkel delen van queries compileert als deze nodig zijn. Analyse en debuggen van query uitvoering is een belangrijk deel van het ontwikkelingsproces van meer efficiënte query uitvoeringstechnieken. We stellen een spoorgebaseerde aanpak voor het debuggen en analyseren van de uitvoeringsstap van ILP algoritmen. We doen een studie van het afwegen van geheugenruimte tegenover uitvoeringstijd op verschillende niveaus van ILP uitvoering. Deze technieken bevatten predikaatstabellering en programmaspecialisatie, tesamen met meer algoritme-specifieke technieken. The goal of data mining is to find rules (or hypotheses) that describe non-trivial relations, patterns or properties of large quantities of data, thus helping in understanding the data better. Inductive Logic Programming (ILP) is a relational data mining technique based on first order logic. Logic provides a powerful yet natural formalism for representing knowledge, allowing ILP to learn concepts that cannot be learned using less powerful data mining techniques. However, because of its high expressivity, the space of all possible hypotheses is also very complex, due to which the search for good hypotheses becomes a complex task. One of the most important factors in the execution of ILP algorithms is the engine underlying the algorithm. This engine is responsible for evaluating candidate hypotheses (or queries) on the data, and provides primitives to the ILP algorithm for guiding the evaluation of queries. In this work, we present different techniques for optimizing the engines used by ILP algorithms. We combine two existing, independent, and successful optimization techniques for query evaluation: the once transformation, which aims to avoid redundant execution within a single query, and query packs, which avoid redundancy in the execution of multiple queries. The general approach to query evaluation is to compile the query to a more efficient version instead of executing the query directly. We study alternatives to this approach, and propose a more performant compilation technique, together with a lazy variant that only compiles parts of queries as they are needed. Analysis and debugging of query execution is an important part of the development of more efficient query execution techniques. We present a trace-based technique for debugging and analyzing the execution step of ILP algorithms. We present a study of trading off extra memory for execution time on different levels of ILP execution. These techniques include predicate tabling and program specialization, together with more ILP algorithm-specific techniques. De hoeveelheid gegevens die opgeslagen worden op digitale media groeit zeer snel. Het hoofddoel van het bewaren van deze gegevens is om er nieuwe informatie uit af te leiden: supermarken verzamelen gegevens over het koopgedrag van hun klanten, om zo hun marketing campagnes beter te kunnen richten; zoekmotoren bewaren informatie over vorige zoekopdrachten om gepersonaliseerde resultaten te kunnen tonen, ... Het doel van data mining is om uit deze grote hoeveelheden gegevens nieuwe informatie af te leiden. Inductief Logisch Programmeren (ILP) is een krachtige data mining techniek, gebaseerd op logisch redeneren. Omwille van de complexe informatie die ILP kan afleiden uit gegevens, is het afleiden van deze informatie zelf een zeer zware taak. Een cruciaal element bij het afleiden van nieuwe informatie, gebruik makend van ILP, is de motor van het ILP systeem. In dit werk bestuderen we technieken voor het bouwen van efficiëntere ILP motoren.
Academic collection --- 681.3*E --- 681.3*D34 <043> --- Data --- Processors, compilers, interpreters, debuggers--Dissertaties --- Theses --- 681.3*E Data
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This Symposium explores emerging trends and novel ideas and concepts in the area of VLSI. ISVLSI 2006 covers a range of topics: from VLSI circuits, systems, and design methods to system level design and system-on-chip issues, to bringing VLSI experience to new areas and technologies like nano- and molecular devices, MEMS, and quantum computing. Future design methodologies are one of the key topics at the workshop, as well as new CAD tools to support them.
Computers --- System design --- Circuits --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic brains --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Cybernetics --- Machine theory --- Calculators --- Cyberspace
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Integrated circuits --- Computers --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic brains --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Cybernetics --- Machine theory --- Calculators --- Cyberspace --- Very large scale integration --- Circuits
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Interfacing PIC Microcontrollers provides a thorough introduction to interfacing techniques for students, engineers and hobbyists looking to take their knowledge of PIC application development to the next level. Step-by-step examples in assembly language are used to illustrate a comprehensive set of interfaces, and these can be run interactively on Proteus circuit simulation software, used widely in educational institutions, to aid understanding without the need to build real hardware.Each chapter ends with suggestions for further applications, based on the examples given, and numerous
Computer interfaces --- Interactive computer systems --- Programmable controllers --- interfacing --- PIC --- processors --- Controllers, Programmable --- Electronic controllers --- Automatic control --- Computer systems --- Online data processing --- Interfaces, Computer --- Computer input-output equipment --- Interface circuits --- Programmable controllers. --- Microprocessors. --- Minicomputers
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Hop Integrity in the Internet introduces a new security defense, hop integrity, that can be used against denial-of-service attacks in the Internet. Hop integrity ensures that if a message, that is part of a denial-of-service attack, is originated by an adversarial host in the Internet and if the message header includes a wrong address for the originating host (in order to hide the true source of the attack), then the message will be classified as modified or replayed and will be discarded by the first router that receives the message in the Internet. A suite of protocols for providing hop integrity in the Internet is discussed in great detail. In particular, each protocol in this suite is specified and verified using an abstract and formal notation, called the Secure Protocol Notation. There are five protocols in this suite: - A secure address resolution protocol - A light-weight key update protocol - A protocol for computing and verifying message digests - An anti-replay protocol that uses soft sequence numbers - An anti-replay protocol that uses hard sequence numbers In addition, other benefits of hop integrity extend to secure routing, mobile IP, and IP multicast. Hop Integrity in the Internet is primarily directed towards designers, reviewers, verifiers, and implementors of secure network protocols. Graduate students who are interested in network security and secure protocols will find this book invaluable.
Computer security. --- Computers. --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic brains --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Cybernetics --- Machine theory --- Calculators --- Cyberspace --- Computer privacy --- Computer system security --- Computers --- Cyber security --- Cybersecurity --- Electronic digital computers --- Protection of computer systems --- Security of computer systems --- Data protection --- Security systems --- Hacking --- Protection --- Security measures
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A collection of papers presented at the last Scientific Computing in Electrical Engineering (SCEE) Conference, held in Capo d'Orlando, Sicily, in 2004. The series of SCEE conferences aims at addressing mathematical problems which have a relevancy to industry. This book is useful for Engineers, Physicists and Mathematicians.
Electrical engineering --- Computers. --- Data processing --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic brains --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Cybernetics --- Machine theory --- Calculators --- Cyberspace --- Computer engineering. --- Computer science. --- Electrical Engineering. --- Computational Science and Engineering. --- Computers --- Informatics --- Science --- Design and construction --- Electrical engineering. --- Computer mathematics. --- Computer mathematics --- Electronic data processing --- Mathematics --- Electric engineering --- Engineering
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Information science. --- Computers. --- Computer science --- High performance computing. --- HPC (Computer science) --- Electronic data processing --- Cyberinfrastructure --- Supercomputers --- Automatic computers --- Automatic data processors --- Computer hardware --- Computing machines (Computers) --- Electronic brains --- Electronic calculating-machines --- Electronic computers --- Hardware, Computer --- Computer systems --- Cybernetics --- Machine theory --- Calculators --- Cyberspace --- Communication --- Information literacy --- Library science
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