President Bill Clinton gives us his views on the challenges facing the United States today and why government matters—presenting his ideas on restoring economic growth, job creation, financial responsibility, resolving the mortgage crisis, and pursuing a strategy to get us "back in the future business.” He explains how we got into the current economic crisis, and offers specifi...(展开全部)

President Bill Clinton gives us his views on the challenges facing the United States today and why government matters—presenting his ideas on restoring economic growth, job creation, financial responsibility, resolving the mortgage crisis, and pursuing a strategy to get us "back in the future business.” He explains how we got into the current economic crisis, and offers specifi...(展开全部)

罗杰彭罗斯,著名广义相对论学家、宇宙学家斯蒂芬霍金的合作人。 1931年 罗杰·彭罗斯出生于英国埃塞克斯州的一个医生家庭。他的爸爸是著名的人类遗传学家莱昂内尔·彭罗斯，罗杰·彭罗斯先进入伦敦大学的附属中学，而后进入伦敦大学学院。 他在1957年 被授予剑桥大学博士学位。与他爸爸一起合作，设计出常人难以做出的几何图形。他的设计被荷兰艺术家艾斯丘（1898－1972）（因创立光学幻影而闻名）收入石版画中。 1964年 在美国奥斯丁的德克萨斯大学工作时，罗杰·彭罗斯开始提出一种观点，他在牛津大学工作时，继续发展了这一观点——即磁扭线理论的新的宇宙理论。他用复数公然反对物理学的一些主要定理。 1965年，他的以著名论文《引力坍塌和时空奇点》为代表的一系列论文，和著名数学物理学家斯蒂芬.霍金的工作一起创立了现代宇宙论的数学结构理论。 1966年 任伦敦大学Bi...(展开全部)

罗杰彭罗斯,著名广义相对论学家、宇宙学家斯蒂芬霍金的合作人。 1931年 罗杰·彭罗斯出生于英国埃塞克斯州的一个医生家庭。他的爸爸是著名的人类遗传学家莱昂内尔·彭罗斯，罗杰·彭罗斯先进入伦敦大学的附属中学，而后进入伦敦大学学院。 他在1957年 被授予剑桥大学博士学位。与他爸爸一起合作，设计出常人难以做出的几何图形。他的设计被荷兰艺术家艾斯丘（1898－1972）（因创立光学幻影而闻名）收入石版画中。 1964年 在美国奥斯丁的德克萨斯大学工作时，罗杰·彭罗斯开始提出一种观点，他在牛津大学工作时，继续发展了这一观点——即磁扭线理论的新的宇宙理论。他用复数公然反对物理学的一些主要定理。 1965年，他的以著名论文《引力坍塌和时空奇点》为代表的一系列论文，和著名数学物理学家斯蒂芬.霍金的工作一起创立了现代宇宙论的数学结构理论。 1966年 任伦敦大学Bi...(展开全部)

Twenty years after the Agile Manifesto was first presented, the legendary Robert C. Martin (“Uncle Bob”) reintroduces agile values and principles for a new generation of software developers. In this eagerly-awaited book, the best-selling author of The Clean Coder shows how to bring unprecedented levels of professionalism and discipline to agile development — and thereby write f...(展开全部)

How fast does gravity travel? When will the sun go nova? Who invented the light year? Will we ever travel to the stars? These are just some of the unusual and popular questions NASA astronomer Sten Odenwald answers in Back to the Astronomy Caf, based on his award-winning website "for the astronomically disadvantaged. " Since his acclaimed earlier book The Astronomy Caf publis...(展开全部)

Twenty years after the Agile Manifesto was first presented, the legendary Robert C. Martin (“Uncle Bob”) reintroduces agile values and principles for a new generation of software developers. In this eagerly-awaited book, the best-selling author of The Clean Coder shows how to bring unprecedented levels of professionalism and discipline to agile development — and thereby write f...(展开全部)

How fast does gravity travel? When will the sun go nova? Who invented the light year? Will we ever travel to the stars? These are just some of the unusual and popular questions NASA astronomer Sten Odenwald answers in Back to the Astronomy Caf, based on his award-winning website "for the astronomically disadvantaged. " Since his acclaimed earlier book The Astronomy Caf publis...(展开全部)