黄凯芹
发表于8分钟前回复 :A witty, exhilarating and mind-expanding exploration of the word of our times - data - with mathematician Dr Hannah Fry. Following in the footsteps of BBC Four's previous gleefully nerdy, award-winning maths films The Joy of Stats, Tails you Win - The Science of Chance and The Joy of Logic, this new high-tech romp reveals exactly what data is and how it is captured, stored, shared and made sense of. Fry also tells the story of the engineers of the data age, people most of us have never heard of despite the fact they brought about a technological and philosophical revolution.For Hannah Fry, the joy of data is all about spotting patterns. She's Lecturer in the Mathematics of Cities at UCL as well as being the presenter of the BBC series Trainspotting Live and City in the Sky, and she sees data as the essential bridge between two universes - the tangible, noisy, messy world that we see and experience, and the clean, ordered, elegant world of maths, where everything can be captured beautifully with equations.Along the way the film reveals the connection between Scrabble scores and online movie streaming, explains why a herd of Wiltshire dairy cows are wearing pedometers, and uncovers the remarkable network map of Wikipedia. What's the mystery link between 'marmalade' and 'One Direction'?The Joy of Data also hails the giant contribution of Claude Shannon, the American mathematician and electrical engineer who, in an attempt to solve the problem of noisy telephone lines, devised a way to digitise all information. It was Shannon, father of the 'bit', who singlehandedly launched the 'information age'. Meanwhile, the green lawns of Britain's National Physical Laboratory host a race between its young apprentices in order to demonstrate how and why data moves quickly and successfully around modern data networks. It's all thanks to the brilliant technique first invented there in the 1960s by Welshman Donald Davies - packet switching - without which there would be no internet as we know it.But what of the future, big data and artificial intelligence? Should we be worried by the pace of change, and what our own data could and should be used for? Ultimately, Fry concludes, data has empowered all of us. We must have machines at our side if we're to find patterns in the modern-day data deluge. But, Fry believes, regardless of AI and machine learning, it will always take us to find the meaning in them.
尚富霞
发表于4分钟前回复 :通过伊利诺伊州一户有机农场主的视角,展现了一批历经大工业化农业运作模式的农场主对于更加环保更加健康的农作方式的探索和坚持。America is facing a food crisis driven by profitability and a lack of consumer education. While the window to transforming our heartland continues to shrink, passionate individuals have emerged who provide hope that the health of our nation might still remain within our grasp. Sustainable weaves together expert analysis of America's food and farming system with a powerful narrative of one extraordinary farmer who is determined to create a sustainable future for his community. Amidst the cornfields of Illinois lives the hero of the film - Marty Travis, a seventh-generation farmer who watched his land and community fall victim to the pressures of big agribusiness. Determined to create a proud legacy for his son, Marty transforms his profitless wasteland and pioneers the sustainable food movement in Chicago. The film unearths the future of agriculture - a marriage of age-old tradition and groundbreaking science. Industry pioneers from around the nation reveal the secrets behind human ...