Bøger af Gang Liu

When in 1957 the Soviet Union launched Sputnik, the first satellite, China's dream of space travel seemed to be in the far distant future. So how has the Chinese Space Program caught up so fast? Authors Li Xuanqing and Liu Gang chart China's path to the stars in great and inspiring detail, from the earliest attempts to launch a simple rocket, and up to the Moon Exploration Project and even plans in the future for Mars. We see every step in China's rapid rise into space and follow those hardworking and creative pioneering scientists like Qian Xuesen and others as they struggle to build Dongfanghong 1, the first Chinese satellite, the mighty Long March Rockets, the Shenzhou spacecraft, and the Chang'e Moon Exploration Project. Learn about the personal lives of the astronauts, often from simple rural beginnings, as they tell their incredible stories of hard work, bravery, and triumph as they soar to the stars.And the space program has provided China and the world with many technical advancements, including the Beidou global positioning system, giving a wealth of civilian applications of the knowledge gained from the efforts to conquer space. In addition, China's astronauts are teaching young children about the possibilities of space travel, giving new generations reasons to dream of flying in the stars.With 85 historic photos, this book will inform and inspire future generations to learn from these heroic efforts to take China into space, to the Moon, Mars, and beyond!

Ever since computer is invented, more powerful software have been developed, such as amazing PC applications, multithreading programs running in servers of major web sites, etc. These powerful software push hardware especially processor design to limit. Processor cache is key to system performance. Unlike hard drive and DRAM, which have seen quick growth in capacity in recent years, processor caches remain as several MBs due to expensive cost. Software are generally hurt by small cache size because of high cache miss rate. Data prefetching is a mechanism to efficiently reduce cache miss rate thus improve system performance. This book will give a complete introduction to data prefetching for processors, detailed analysis of cache miss pattern of modern benchmarks, and describe innovative, advanced data prefetching designs.