Electron correlation is an important phenomenon of solid-state physics, which is actively studied both by experimentalists for the rich material properties which result from it and by theoreticians which face a lot of open questions on the way to a succesful many-body description of electron systems where the Coulomb interaction plays an important role. Ferromagnetic cobalt is an interesting candidate for the study of electron correlation, since the exchange interaction splits the band structure into majority-spin and minority-spin bands, which differ considerably in the strength of the electron-electron interaction.Using a revolutionary, parallelized approach to spin-resolved photoemission with an efficiency 3 to 4 orders of magnitude higher than previously possible, the spin-dependent manifestations of the electron correlation are revealed in unprecedented detail, allowing for a characterization of the self energy. As an additional phenomenon of the electron correlation, unusual waterfall features, previously only observed in superconductors, occur in the photoemission spectra of cobalt. Further subjects include a comprehensive mapping of the fcc cobalt Fermi surface and an investigation of unoccupied quantum well states in ultrathin cobalt films on copper accessed by spin-resolved, non-linear photoemission. The principle of the imaging spin filter and the data analysis routine are discussed in-depth in a dedicated chapter.
Answer Set Programming (ASP) is a declarative problem solving approach, initially tailored to modeling problems in the area of Knowledge Representation and Reasoning (KRR). More recently, its attractive combination of a rich yet simple modeling language with high-performance solving capacities has sparked interest in many other areas even beyond KRR. This book presents a practical introduction to ASP, aiming at using ASP languages and systems for solving application problems. Starting from the essential formal foundations, it introduces ASP's solving technology, modeling language and methodology, while illustrating the overall solving process by practical examples. Table of Contents: List of Figures / List of Tables / Motivation / Introduction / Basic modeling / Grounding / Characterizations / Solving / Systems / Advanced modeling / Conclusions
This book combines the two most important typologies of capitalist diversity; Esping-Andersen's welfare regime typology and Hall and Soskice's 'Varieties of Capitalism' typology, into a unified typology of capitalist diversity. The author shows empircally that certain welfare states bundle together with certain production systems.
From Martin Dugard, #1 New York Times bestselling coauthor of Bill O'Reilly's Killing series—with more than 12 million copies sold—comes a soaring account of England's desperate fight to fend off German invasion. Great Britain, summer 1940. The Battle of France is over. The Battle of Britain is about to begin. Adolf Hitler’s powerful armies control Europe. England stands alone against this juggernaut, the whole world knowing it is only a matter of time before Nazi Germany unleashes its military might on the island nation. And in London, a new prime minister named Winston Churchill is determined to defeat the Nazi menace, no matter the costs. Luckily for Churchill, one quirky Englishman has seen the future. Air Vice-Marshall Hugh Dowding is head of the Royal Air Force Fighter Command. He has spent years preparing his nation's aerial defenses, utilizing the new technology of radar, training hundreds of hand-picked young pilots, and overseeing the design and purchase of the world's most up-to-date fighter aircraft. In time, the names "Spitfire" and "Hurricane" will become iconic, these airplanes synonymous with a David versus Goliath struggle between the RAF and German Luftwaffe. For the first time in history, the battlefield will not be on land or in water but entirely contested in the skies above. Nazi victory depends upon their overwhelming air power, and the fate of not just the British people but all of Western Civilization hinges on a small group of elite pilots stopping this onslaught—a band of brothers who will go down in history as the Few. Taking London puts the reader inside the action, bringing to life the personal sagas of Churchill, Dowding, and legendary fighter pilots like Peter Townsend, Geoffrey Wellum, Richard Hillary, and American Billy Fiske, all set against the defiant backdrop of wartime London. Told in fast-paced, you-are-there fashion, this third book in the epic Taking series is an indelible portrait of the moment the tide of WWII was turned, and the incredible heroes who made it happen.
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