DK百科系列 坦克车百科书 坦克的诞生到无人驾驶汽车和未来的坦克，这本坦克书提供了一个真正权威的看法，超过400种不同的坦克，与坦克博物馆联合生产。 近距离观察英国、美国、俄罗斯和法国的坦克，与米哈伊尔·科什金(Mikhail Koshkin)和威廉·特里顿爵士(Sir William Tritton)等关键设计师会面，了解“百夫长”(Centurion)、“地狱猫”(Hellcat)、SV侦察机(SV Scout)和T-14“阿玛塔”(Armata)等车辆背后的复杂机制。 令人难以置信的摄影之旅带你进入各种各样的坦克，把你放在一些可怕的车辆的座位上，去参加第二次世界大战，冷战，等等。对于任何一个对军事史感兴趣的人来说，这本坦克书都是一本关于坦克及其独特历史的特色指南。 1602555876
Why does modern life revolve around objectives? From how science is funded, to improving how children are educated -- and nearly everything in-between -- our society has become obsessed with a seductive illusion:that greatness results from doggedly measuring improvement in the relentless pursuit of an ambitious goal. In Why Greatness Cannot Be Planned, Stanley and Lehman begin with a surprising scientific discovery in artificial intelligence that leads ultimately to the conclusion that the objective obsession has gone too far. They make the case that great achievement can't be bottled up into mechanical metrics;that innovation is not driven by narrowly focused heroic effort;and that we would be wiser (and the outcomes better) if instead we whole-heartedly embraced serendipitous discovery and playful creativity.Controversial at its heart, yet refreshingly provocative, this book challenges readers to consider life without a destination and discovery without a compass.
For more than two thousand years a familiarity with mathematics has been regarded as an indispensable part of the intellectual equipment of every cultured person. Today, unfortunately, the traditional place of mathematics in education is in grave danger. The teaching and learning of mathematics has degenerated into the realm of rote memorization, the outcome of which leads to satisfactory formal ability but does not lead to real understanding or to greater intellectual independence. This new edition of Richard Courant's and Herbert Robbins's classic work seeks to address this problem. Its goal is to put the meaning back into mathematics. Written for beginners and scholars, for students and teachers, for philosophers and engineers, What is Mathematics?, Second Edition is a sparkling collection of mathematical gems that offers an entertaining and accessible portrait of the mathematical world. Covering everything from natural numbers and the number system to geometrical constructions and projective geometry, fr
