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Algebraic geometry is a central subfield of mathematics in which the study of cycles is an important theme. Alexander Grothendieck taught that algebraic cycles should be considered from a motivic point of view and in recent years this topic has spurred a lot of activity. This book is one of two volumes that provide a self-contained account of the subject as it stands. Together, the two books contain twenty-two contributions from leading figures in the field which survey the key research strands and present interesting new results. Topics discussed include: the study of algebraic cycles using Abel-Jacobi/regulator maps and normal functions; motives (Voevodsky's triangulated category of mixed motives, finite-dimensional motives); the conjectures of Bloch-Beilinson and Murre on filtrations on Chow groups and Bloch's conjecture. Researchers and students in complex algebraic geometry and arithmetic geometry will find much of interest here.

Algebraic cycles --- Motives (Mathematics) --- Theory of motives (Mathematics) --- Algebraic varieties --- Homology theory --- Cycles, Algebraic --- Geometry, Algebraic

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This book constitutes the thoroughly refereed proceedings of the 8th Workshop of the Cross-Language Evaluation Forum, CLEF 2007, held in Budapest, Hungary, September 2007. The revised and extended papers were carefully reviewed and selected for inclusion in the book. There are 115 contributions in total and an introduction. The seven distrinct evaluation tracks in CLEF 2007, are designed to test the performance of a wide range of multilingual information access systems or system components. The papers are organized in topical sections on Multilingual Textual Document Retrieval (Ad Hoc), Domain-Specific Information Retrieval (Domain-Specific), Multiple Language Question Answering (QA@CLEF), cross-language retrieval in image collections (Image CLEF), cross-language speech retrieval (CL-SR), multilingual Web retrieval (WebCLEF), cross-language geographical retrieval (GeoCLEF), and CLEF in other evaluations.

Cross-language information retrieval --- Information storage and retrieval systems. --- Automatic data storage --- Automatic information retrieval --- Automation in documentation --- Computer-based information systems --- Data processing systems --- Data storage and retrieval systems --- Discovery systems, Information --- Information discovery systems --- Information processing systems --- Information retrieval systems --- Machine data storage and retrieval --- Mechanized information storage and retrieval systems --- Computer systems --- Electronic information resources --- Data libraries --- Digital libraries --- Information organization --- Information retrieval --- CLIR (Cross-language information retrieval) --- Multilingual information retrieval --- Polyglot information retrieval --- Language and languages --- Computational linguistics --- Machine translating --- Natural language processing (Computer science). --- Computational linguistics. --- Information storage and retrieva. --- Data mining. --- Artificial intelligence. --- Natural Language Processing (NLP). --- Computational Linguistics. --- Information Storage and Retrieval. --- Information Systems Applications (incl. Internet). --- Data Mining and Knowledge Discovery. --- Artificial Intelligence. --- AI (Artificial intelligence) --- Artificial thinking --- Electronic brains --- Intellectronics --- Intelligence, Artificial --- Intelligent machines --- Machine intelligence --- Thinking, Artificial --- Bionics --- Cognitive science --- Digital computer simulation --- Electronic data processing --- Logic machines --- Machine theory --- Self-organizing systems --- Simulation methods --- Fifth generation computers --- Neural computers --- Algorithmic knowledge discovery --- Factual data analysis --- KDD (Information retrieval) --- Knowledge discovery in data --- Knowledge discovery in databases --- Mining, Data --- Database searching --- Automatic language processing --- Language data processing --- Linguistics --- Natural language processing (Linguistics) --- Applied linguistics --- Mathematical linguistics --- Multilingual computing --- NLP (Computer science) --- Artificial intelligence --- Human-computer interaction --- Semantic computing --- Data processing --- Information storage and retrieval. --- Application software. --- Application computer programs --- Application computer software --- Applications software --- Apps (Computer software) --- Computer software --- Computer and Information Systems Applications. --- Data centers

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This is a collection of lecture notes from the Summer School 'Cycles Algébriques; Aspects Transcendents, Grenoble 2001'. The topics range from introductory lectures on algebraic cycles to more advanced material. The advanced lectures are grouped under three headings: Lawson (co)homology, motives and motivic cohomology and Hodge theoretic invariants of cycles. Among the topics treated are: cycle spaces, Chow topology, morphic cohomology, Grothendieck motives, Chow-Künneth decompositions of the diagonal, motivic cohomology via higher Chow groups, the Hodge conjecture for certain fourfolds, an effective version of Nori's connectivity theorem, Beilinson's Hodge and Tate conjecture for open complete intersections. As the lectures were intended for non-specialists many examples have been included to illustrate the theory. As such this book will be ideal for graduate students or researchers seeking a modern introduction to the state-of-the-art theory in this subject.

Algebraic cycles --- Cycles, Algebraic --- Geometry, Algebraic

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Significant zoonotic diseases have appeared with increasing frequency in recent years. At a symposium held in Galveston, Texas, in March 2004, many outstanding virologists and others presented papers under the broad theme of "emergence". The intent was to elucidate the diseases themselves, the mechanisms by which they have emerged, the publication perception and response to the diseases, and the possibility of prevention or prediction. The papers in this book summarize the talks of this meeting. Among the many timely papers are those by Nobel Prize winner Peter Doherty, influenza epidemiologists Robert Webster and Jeffery Taubenberger, and important contributions by Neal Nathanson, Esteban Domingo, Barry Beaty, David Walker, James Hughes, and others of world expertise.

Virus diseases --- Interna medicine. --- Internal medicine. --- Medicine, Internal --- Medicine --- Medical virology. --- Tropical medicine. --- Virology. --- Tropical Medicine. --- Diseases, Tropical --- Hygiene, Tropical --- Public health, Tropical --- Sanitation, Tropical --- Tropical diseases --- Medical climatology --- Medical microbiology --- Virology --- Microbiology