Peer-to-Peer (P2P) networks enable users to directly share digital content (such as audio, video, and text files) as well as real-time data (such as telephony traffic) with other users without depending on a central server. Although originally popularized by unlicensed online music services such as Napster, P2P networking has recently emerged as a viable multimillion dollar business model for the distribution of academic and clinical information, telecommunications, and social networking.

This book is a translation of an authoritative introductory text based on a lecture series delivered by the renowned differential geometer, Professor S S Chern in Beijing University in 1980. The original Chinese text, authored by Professor Chern and Professor Wei-Huan Chen, was a unique contribution to the mathematics literature, combining simplicity and economy of approach with depth of contents. The present translation is aimed at a wide audience, including (but not limited to) advanced undergraduate and graduate students in mathematics, as well as physicists interested in the diverse applications of differential geometry to physics. In addition to a thorough treatment of the fundamentals of manifold theory, exterior algebra, the exterior calculus, connections on fiber bundles, Riemannian geometry, Lie groups and moving frames, and complex manifolds (with a succinct introduction to the theory of Chern classes), and an appendix on the relationship between differential geometry and theoretical physics, this book includes a new chapter on Finsler geometry and a new appendix on the history and recent developments of differential geometry, the latter prepared specially for this edition by Professor Chern to bring the text into perspectives.

This book brings all of the elements of database design together in a single volume, saving the reader the time and expense of making multiple purchases. It consolidates both introductory and advanced topics, thereby covering the gamut of database design methodology ? from ER and UML techniques, to conceptual data modeling and table transformation, to storing XML and querying moving objects databases.

The Vellum magic is addictive—ask any Ashlar-Vellum customer why they use our products and you’ll hear about “Vellumness.” Across our product line, the uniting element is the magical feel of creative simplicity and efficient power. It anticipates your needs and quietly offers help without distraction or intrusion. Sketch in 2D and 3D—play with an idea, explore, discover. Only pencil and paper compete. Once you begin working with Vellum products, you’ll understand the cult following. Design any shape imaginable—even the organic forms essential to high-end design. Traditional CAD lacks the flexibility to create truly aesthetic, uniquely beautiful forms. Not so with Ashlar-Vellum products.

Ashampoo Burning Studio Advanced is a major update that improves almost every aspect of the program, adding many new features and capabilities in every part of the program. It also introduces a new Movie Editor for editing and combining your videos before burning them to DVD. The Movie Editor has functions for cutting, transitions, fades, subtitles, titles and more, plus a point-and-click DVD menu editor with animated themes for creating great-looking interfaces for your DVD movies. The new version also packed with improvements, new features and fine tuning that make all Burning Studio’s functions more powerful and even easier to use.

Google Earth combines satellite imagery, maps and the power of Google Search to put the world’s geographic information at your fingertips. Fly from space to your neighborhood. Type in an address and zoom right in. Search for schools, parks, restaurants, and hotels. Get driving directions. Tilt and rotate the view to see 3D terrain and buildings. Save and share your searches and favorites. Even add your own annotations.