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Safety assessment of new air traffic management systems is a main issue for civil aviation authorities. Standard techniques such as testing and simulation have serious limitations in new systems that are significantly more autonomous than the older ones. This paper presents an innovative approach, based on formal verification, for establishing the correctness of conflict detection systems. Fundamental is the concept of trajectory, which is a continuous path in the x-y plane constrained by physical laws and operational requirements. From the Model of trajectories, the authors extract, and formally prove, high level properties that can serve as a framework to analyze conflict scenarios. They use the AILS alerting algorithm as a case study.
This book constitutes the refereed proceedings of the 21st International Conference on Theorem Proving in Higher Order Logics, TPHOLs 2008, held in Montreal, Canada, in August 2008. The 17 revised full papers presented together with 1 proof pearl (concise and elegant presentations of interesting examples), 5 tool presentations, and 2 invited papers were carefully reviewed and selected from 40 submissions. The papers cover all aspects of theorem proving in higher order logics as well as related topics in theorem proving and verification such as formal semantics of specification, modeling, and programming languages, specification and verification of hardware and software, formalisation of mathematical theories, advances in theorem prover technology, as well as industrial application of theorem provers.
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This volume is the proceedings of the 13th International Conference on Theo rem Proving in Higher Order Logics (TPHOLs 2000) held 14-18 August 2000 in Portland, Oregon, USA. Each of the 55 papers submitted in the full rese arch category was refereed by at least three reviewers who were selected by the program committee. Because of the limited space available in the program and proceedings, only 29 papers were accepted for presentation and publication in this volume. In keeping with tradition, TPHOLs 2000 also offered a venue for the presen tation of work in progress, where researchers invite discussion by means of a brief preliminary talk and then discuss their work at a poster session. A su...
Would Mr. Darcy have preferred Mary Poppins to Lizzie Bennet? Is the New Testament science-fiction? Could the Three Musketeers have beaten the Lord of the Rings in a fair fight? Does Jemima Puddleduck work better as a French trash novel? And what would Pooh have said to Dante? You'll find answers to all the above questions, and many more, in this book.
The book provides an introduction to the basics of fungi, discussing various types ranging from edible mushrooms to Neurospora – a model system for genetics and epigenetics. After addressing the classification and biodiversity of fungi, and fungi in different ecological niches, it describes the latest applications of fungi, their role in sustainable environments and in alleviating stress in plants, as well as their role in causing plant and animal diseases. Further chapters explore the advances in fungal interactions research and their implications for various systems, and discuss plant-pathogen interactions. The book also features a section on bioprospecting, and is an extremely interesting and informative read for anybody involved in the field of mycology, microbiology and biotechnology teaching and research.
Ideal for drug discovery scientists and medicinal chemists with an interest in antiviral drug discovery and development, this book provides a complete overview of the latest progress in the field, recent advances and the challenges that remain in developing these highly pathogenic agents.
In New York Times bestselling author Cindy Gerard's sizzling new novel, a ruthless international conspiracy is no match for the irresistible alpha heroes of Black Ops, Inc. A RACE FOR SURVIVAL... Bold, blonde Defense Intelligence officer B. J. Chase isn't exactly thrilled when she's summoned from personal leave to investigate an alarming national security breach -- until the suspicious death of a government official blows her covert mission sky-high. TURNS INTO A PULSE-POUNDING ADVENTURE... Gorgeous Black Ops bad boy Raphael Mendoza always feared his family's dark history would haunt him. But he never expected it might hold the key to dismantling a rogue weapons system. Now with cool B. J. Chase posing as his hot babe fiancée, he returns to his uncle in Colombia to convince him he can be trusted with the family's dirtiest business secrets. ...AND IGNITES A PASSIONATE FIRE. Carrying out a deception among ruthless killers brings Rafe and B.J. too close to ignore the smoldering heat between them. Now, they must work together as the closest of partners as the countdown to international catastrophe closes in....
This new eBook edition of the Green Guide Spain is a wide-ranging guide to the best of the country. Visit dynamic cities packed with world-class museums, superb dining and fantastic shopping, or enjoy Spain's stunning beaches and mountains. The guide takes the guesswork out of trip organization. Detailed maps, driving itineraries and Michelin’s famed star-rating system ensure a variety of attractions and activities from a winery visit to cycling along Madrid's riverbanks. This guide covers it all to suit every budget and expectation. This new eBook edition of the Green Guide Spain is a wide-ranging guide to the best of the country. Visit dynamic cities packed with world-class museums, supe...
A chilling novel about the nightmare of a corrupt and brutal dictatorship. The star of Roberto Bolano's hair-raising novel Distant Star is Alberto Ruiz-Tagle, an air force pilot who exploits the 1973 coup to launch his own version of the New Chilean Poetry, a multimedia enterprise involving sky-writing, poetry, torture, and photo exhibitions. For our unnamed narrator, who first encounters this "star" in a college poetry workshop, Ruiz-Tagle becomes the silent hand behind every evil act in the darkness of Pinochet's regime. The narrator, unable to stop himself, tries to track Ruiz-Tagle down, and sees signs of his activity over and over again. A corrosive, mocking humor sparkles within Bolano's darkest visions of Chile under Pinochet. In Bolano's world there's a big graveyard and there's a big graveyard laugh. (He once described his novel By Night in Chile as "a tale of terror, a situation comedy, and a combination pastoral-gothic novel.") Many Chilean authors have written about the "bloody events of the early Pinochet years, the abductions and murders," Richard Eder commented in the The New York Times: "None has done it in so dark and glittering a fashion as Roberto Bolano."