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Indians of North America --- Hunting and gathering societies --- Environmental archaeology --- Archaeological surveying --- Indiens d'Amérique --- Chasseurs-cueilleurs --- Archéologie de l'environnement --- Prospection archéologique --- Antiquities. --- History. --- Mathematical models. --- Antiquités --- Histoire --- Modèles mathématiques --- Manitoba --- Indiens d'Amérique --- Archéologie de l'environnement --- Prospection archéologique --- Antiquités --- Modèles mathématiques

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The third edition of this classic tutorial and reference on procedural texturing and modeling is thoroughly updated to meet the needs of today's 3D graphics professionals and students. New for this edition are chapters devoted to real-time issues, cellular texturing, geometric instancing, hardware acceleration, futuristic environments, and virtual universes. In addition, the familiar authoritative chapters on which readers have come to rely contain all-new material covering L-systems, particle systems, scene graphs, spot geometry, bump mapping, cloud modeling, and noise improvements. There are many new spectacular color images to enjoy, especially in this edition's full-color format. As in the previous editions, the authors, who are the creators of the methods they discuss, provide extensive, practical explanations of widely accepted techniques as well as insights into designing new ones. New to the third edition are chapters by two well-known contributors: Bill Mark of NVIDIA and John Hart of the University of Illinois at Urbana-Champaign on state-of-the-art topics not covered in former editions. An accompanying Web site (www.texturingandmodeling.com) contains all of the book's sample code in C code segments (all updated to the ANSI C Standard) or in RenderMan shading language, plus files of many magnificent full-color illustrations. No other book on the market contains the breadth of theoretical and practical information necessary for applying procedural methods. More than ever, Texturing & Modeling remains the chosen resource for professionals and advanced students in computer graphics and animation. *New chapters on: procedural real-time shading by Bill Mark, procedural geometric instancing and real-time solid texturing by John Hart, hardware acceleration strategies by David Ebert, cellular texturing by Steven Worley, and procedural planets and virtual universes by Ken Musgrave. *New material on Perlin Noise by Ken Perlin. *Printed in full color throughout. *Companion Web site contains revised sample code and dozens of images.

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Electronic digital computers --- Programming

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Skates have become a concern in recent years due to the preponderance of these elasmobranchs that are caught as bycatch or as a directed fishery. This has raised concern because skates have life history characteristics that may make them vulnerable to over-exploitation. It was due to this concern that prompted Drs. David Ebert and James Sulikowski to organize an international symposium on the "Biology of Skates". The aims and goals of the symposium were to bring together an international group of researchers to meet, discuss, perhaps develop collaborations, and present their most recent findings. The symposium was held over two days, on 13-14 July, 2006, in conjunction with the 22nd annual meeting of the American Elasmobranch Society in New Orleans, LA. A total of 31 authors from four countries contributed 16 papers that appear in this volume. The papers are broadly arranged into four separate categories: systematics and biogeography, diet and feeding ecology, reproductive biology, and age and growth. This is the first dedicated book on the biology of skates. We hope that readers will find this volume of interest and that it helps encourage and stimulate future research into these fascinating fishes.

Skates (Fishes) --- Chondrichthyes. --- Cartilaginous fishes --- Chondrichthyan fishes --- Chondrichthyans --- Elasmobranch fishes --- Elasmobranchi --- Elasmobranchiate fishes --- Elasmobranchii --- Elasmobranchiomorphi --- Elasmobranchs --- Plagiostomi --- Selachian fishes --- Selachians --- Selachii --- Selachimorpha --- Rajidae --- Physiology. --- Life sciences. --- Aquatic ecology. --- Wildlife. --- Fish. --- Life Sciences. --- Fish & Wildlife Biology & Management. --- Freshwater & Marine Ecology. --- Fishes --- Rajiformes

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An updated and comprehensive guide identifying all of the world's sharksSharks are some of the most misunderstood animals on the planet. We still have a lot to learn about these fascinating creatures, which are more seriously threatened with extinction and in greater need of conservation and management than any other major group of vertebrates.A Pocket Guide to Sharks of the World is the only field guide to identify, illustrate, and describe every known shark species. Its compact format makes it handy for many situations, including recognizing living species, fishery catches, or parts sold at markets. This expanded second edition presents lavish images, details on newly discovered species, and updated text throughout. The book contains useful sections on identifying shark teeth and the shark fins most commonly encountered in the fin trade, and takes a look at shark biology, ecology, and conservation. A Pocket Guide to Sharks of the World will be an essential resource and definitive reference for years to come.An updated guide to all of the world's sharksEach species is illustrated and describedHandy, compact format with concise textUseful sections on the identification of shark teeth and fins

Sharks. --- adventure trips. --- adventure vacations. --- angel shark. --- basking sharks. --- diving tours. --- diving vacations. --- ghost sharks. --- hammerhead. --- milk shark. --- mud shark. --- nature tours. --- nature travel. --- piked dogfish. --- porbeagle. --- sandbar shark. --- sandtiger. --- scuba travel. --- shortfin mako. --- smoothhound. --- spinner shark. --- spiny dogfish. --- spurdog. --- squalidae. --- thresher. --- tope shark. --- travel books.