Mechanical Engineering as a Profession 1、 Introduction Scientists study the world as it is, engineers create the world that never has been What is engineering Engineering is the art of applying scientific and mathematical principles, experience, judgment, and common sense to create things that benefit people In other words, engineering is the process of producing a technical product or system to meet a specific need What engineers do Engineers: Turning Ideas into Reality

Air Safety: End of the Golden Age? First-World aviation has become so safe that a passenger who takes a domestic jet flight every day would on average go 36,000 years before succumbing to a fatal crash. But certain aerial dangers that were practically absent from the First World in the 1990s might be poised for a resurgence (Among these hazards are terrorism, mid-air collisions, and ground collisions. We explore recent data about the mortality risk of air travel, and discuss the prospects for the years ahead Arnold barnett

Countries identified as First-World are listed in the text. Some approximations attend the calculations, and the denominators are rounded off to the nearest half million. The mortality-risk difference between domestic and international flights in the first-world is not statistically significant: If major fatal crashes arise under a Poisson process at rate ) per million flights, then the observed

From The Economist print edition Why the dollar still rules the world-and why the world should be grateful THE dollar is looking vulnerable. It is propped up not by the strength of America's exports, but by vast imports of capital. America, a country already rich in capital, has to borrow from abroad almost

The world economy needs both TO GET a sense of the challenges facing the global economy, fast-forward four years to September 2007 and consider the following three scenarios: he world's top finance ministers arrive in Washington for an emergency summit after the

From The Economist print edition Panos Is economic inequality around the world getting better or worse? CRITICS of capitalism are convinced that the gap between rich and poor is widening across the world. For them, the claim amounts almost to an article of faith: worsening inequality is a sure sign of the moral bankruptcy of \the system\. Whether rising inequality should in fact be seen

The From The Economist print edition One of the world's main currencies is heading for a fall Get article background THE world has a new international currency: frequent-flyer miles. Launched exactly 21 years ago, they are a lot like money. Collectors check their mileage statements as

From The Economist print edition Why the world cannot count on a repeat of the 1980s PARALLELS abound between Ronald Reagan and George Bush. Like the Gipper, Dubya is a sun- belt conservative with fondness for his ranch. In all, Mr Reagan spent about one year of his eight-year presidency at his California retreat. Mr Bush has turned his patch of Texan scrub near Crawford into the hottest destination for world leaders

1、中国意念词(Chinesenesses)八卦 trigram阴、阳yin,yang道 Daocf.logo)江湖(世界) the jianghu World(the traits'worlde.g. . You cant' control everything in traits'world.人在江湖,身不由己道 Daoism(Taoism)

《国际政治经济学》文献资料（International Political Economy and National Security）World Economic Expansion and National Security in Pre-World War I Europe