With the increase in computing speed and due to the high quality of the optical effects it achieves, ray tracing is becoming a popular choice for interactive and animated rendering. This book takes readers through the whole process of building a modern ray tracer from scratch in C++. All concepts and processes are explained in detail with the aid o
With the increase in computing speed and due to the high quality of the optical effects it achieves, ray tracing is becoming a popular choice for interactive and animated rendering. This book takes readers through the whole process of building a modern ray tracer from scratch in C++. All concepts and processes are explained in detail with the aid o
Get the authoritative guide to the rivers of New York, featuring 50 of the state’s best paddling trips. From the slow tidal rivers of Long Island to the swift whitewater in the Adirondack Mountains, the best way to experience nature in the Empire State is by paddle! Canoeing & Kayaking New York is a comprehensive guide to New York’s creeks and rivers. Written by expert paddler and New York native Kevin Stiegelmaier, the guidebook provides engaging and concise information, while offering carefully selected details vital to successful trips for beginners and experienced paddlers alike. For more than a decade, Canoeing & Kayaking New York has been a trusted source for paddlers. This popular guidebook presents paddling routes like the majestic Hudson River as is heads to the urban waterways of New York City, the incomparable scenery along the Marion River, the peaceful solitude offered by the Sangerfield River, and the Old Erie Canal—perfect for families with children. Inside you’ll find: Details on 50 of the best trips along New York’s premier rivers for paddling River profiles with maps and GPS coordinates Recommended runs for waterfalls, wildlife viewing, trips with children, and more At-a-glance data including river class, length, and time Canoeing & Kayaking New York is simply the best and most informative New York paddling guide. Wet your paddle and whet your taste for outdoor adventure!
From two New York Times–bestselling authors, a group of talented young people heads to the International Space Station for a new mission: saving Earth from invasion . . . Now that JJ Wren, her brother Dylan, and friends King and Song-Ye have seen Earth’s dark future—facing an invasion by the hideous alien Kylarn—they know they have to prepare the human race. At the local Challenger Center, the mysterious Commander Zota sends JJ and her friends off on another mission, this time to the International Space Station Complex, where they meet old friends, survivors from the disaster at Moonbase Magellan, as well as a mysterious girl, Mira, who claims to be from the past. Another Star Challenger with her own mentor, just like Commander Zota. Together, they have to discover and stop the continuing plans of the alien invaders. And the Kylarn have set their sights on conquering, or destroying, the space station, so that Earth has no protection at all! “The Star Challengers books inspire young readers with [a] sense of adventure, introducing them to a universe of exciting possibilities.” —Buzz Aldrin “[There’s] never a dull moment in these fast-paced books . . . Don’t miss this thought-provoking series.” —Lurlene McDaniel, author of Breathless
Winner of the Gilder Lehrman Military History Prize, Winner of the Fraunces Tavern Museum Book Award & Winner of The Society of the Cincinnati Prize. In the late summer and fall of 1777, after two years of indecisive fighting on both sides, the outcome of the American War of Independence hung in the balance. Having successfully expelled the Americans from Canada in 1776, the British were determined to end the rebellion the following year and devised what they believed a war-winning strategy, sending General John Burgoyne south to rout the Americans and take Albany. When British forces captured Fort Ticonderoga with unexpected ease in July of 1777, it looked as if it was a matter of time before they would break the rebellion in the North. Less than three and a half months later, however, a combination of the Continental Army and Militia forces, commanded by Major General Horatio Gates and inspired by the heroics of Benedict Arnold, forced Burgoyne to surrender his entire army. The American victory stunned the world and changed the course of the war. Kevin J. Weddle offers the most authoritative history of the Battle of Saratoga to date, explaining with verve and clarity why events unfolded the way they did. In the end, British plans were undone by a combination of distance, geography, logistics, and an underestimation of American leadership and fighting ability. Taking Ticonderoga had misled Burgoyne and his army into thinking victory was assured. Saratoga, which began as a British foraging expedition, turned into a rout. The outcome forced the British to rethink their strategy, inflamed public opinion in England against the war, boosted Patriot morale, and, perhaps most critical of all, led directly to the Franco-American alliance. Weddle unravels the web of contingencies and the play of personalities that ultimately led to what one American general called "the Compleat Victory.
It was supposed to be just an educational field trip to the Challenger Learning Center, but JJ Wren and her friends find themselves transported into the future, to a time when the human race is under siege from deadly alien invaders. The evil Kylarn have shifted the orbits of three asteroids, sending them tumbling toward Earth—and a direct impact will have devastating consequences. With instructions and skills they learn from the mysterious Commander Zota, JJ and her fellow Star Challengers embark on a mission to the asteroids before it's too late, hoping to divert the giant rocks before they strike Earth. But the alien invaders aren't the only enemy—the Star Challengers have to worry about human traitors, too!
He argues that these were expressions of the early, "back-to-nature" movement whose underlying biological materialism, or "Naturalism," was integral to American popular culture of the time.".
All three novels in the acclaimed YA sci-fi trilogy featuring teenage space explorers who use real science to save humanity. After a visit to the Challenger Center, a group of young people are recruited to become real space adventurers by the mysterious Commander Zota. Sent into the future to save humanity, they venture to a moon base, a space station, and an asteroid! Each mission involves learning vital new skills and saving humanity. “These teenage Star Challengers team up in their quest to find innovative solutions to help them solve problems using real out-of-this-world science.” —Dr. Sally Ride, Astronaut
Many warblers are notoriously difficult to identify in the field (and even in the hand!) and, until now, there has been no definitive guide to the species of these regions. This guide covers 145 species, covering all aspects of identification. The text includes sections on moult, voice, habitat and behaviour, distribution and measurements. All species (and many races) are illustrated within the 48 colour plates, and there is also a colour distribution map for each species, with a wealth of line drawings complementing the text. Many groups and species of warbler, such as prinias and tailorbirds, have never been described or illustrated in this detail before. Moreover, the book covers recently described series new to science and brings up to date the latest thinking on taxonomic treatment.
After years of watching, reporting on, and photographing pro baseball, Kevin T. Czerwinski and Beth Balbierz began coaching Little League in their respective home towns. In Knack Coaching Youth Baseball, this expert team combine real-life know-how about how to deal with kids with the best lessons they’ve learned from the pros, creating a reliable, usable, and winning instruction book for youth baseball coaches -- and for parents who want some ideas for giving their kids a few pointers in the backyard.
In 1991, Kevin Callan was convicted of the murder of his girlfriend's four-year-old daughter, Mandy, a sufferer from cerebral palsy. Sent down for life, Kevin read everything he could about head injuries (the alleged cause of death) and eventually succeeded in getting his conviction overturned.
On September 15, 1999, a lone gunman entered a church youth rally, shot several rounds of ammunition, and killed seven people before killing himself. This book is the official record of the tragedies and victories of that night and the days that followed - a story of how the One who is the Light turned tragedy into triumph.
In the rolling hills of a small Kentucky town, a mystery emerged in the summer of 2004. What started out as a festive reunion for former classmates would turn tragic in the morning light. When Scotty Martin's unconscious body was discovered the following day, the inquiry surrounding his demise would set off a maelstrom of implications, suspicions and small town gossip. Was it an accident? Or was it something more sinister? No one could say...or would say. Five years later, author Kevin Troxall would travel back to his hometown to investigate the case that had tormented a family and rattled a community. While on the hunt to find the truth of what happened that night, he finds himself on a journey that brings him face to face with his own past. This is the story of what he found.
In 2009, Kevin C. McCall, loving husband and proud father of three, experienced the unimaginable: His youngest son, Ryan, was murdered in a robbery attempt after leaving a college party in Tampa, Florida. In For the Love of Family, Kevin shares his personal journey through shock, horror, grief, anger, reconciliation, and healing. Over the course of more than six years, Kevin fought daily to escape the grip of depression and hate; he fought to center his life around love and faith. Encounters and events, sometimes curious yet ultimately enlightening, weave throughout his days and nights, guiding him forward. Although his story is harrowing and painful, it is also filled with love--love for his family and love for life.
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