A team of engineers at Harvard University has been inspired by Nature to create the first robotic fly. The mechanical fly has become a platform for a series of new high-tech integrated systems. Designed to do what a fly does naturally, the tiny machine is the size of a fat housefly. Its mini wings allow it to stay in the air and perform controlled flight tasks.

    “It's extremely important for us to think about this as a whole system and not just the sum of a bunch of individual components (元件),” said Robert Wood, the Harvard engineering professor who has been working on the robotic fly project for over a decade. A few years ago, his team got the go-ahead to start piecing together the components.“The added difficulty with a project like this is that actually none of those components are off the shelf and so we have to develop them all on our own,” he said.

    They engineered a series of systems to start and drive the robotic fly. “The seemingly simple system which just moves the wings has a number of interdependencies on the individual components, each of which individually has to perform well, but then has to be matched well to everything it's connected to,” said Wood. The flight device was built into a set of power, computation, sensing and control systems. Wood says the success of the project proves that the flying robot with these tiny components can be built and manufactured.

    While this first robotic flyer is linked to a small, off-board power source, the goal is eventually to equip it with a built-in power source, so that it might someday perform data-gathering work at rescue sites, in farmers' fields or on the battlefield. “Basically it should be able to take off, land and fly around,” he said.

    Wood says the design offers a new way to study flight mechanics and control at insect-scale. Yet, the power, sensing and computation technologies on board could have much broader applications. “You can start thinking about using them to answer open scientific questions, you know, to study biology in ways that would be difficult with the animals, but using these robots instead,” he said. “So there are a lot of technologies and open interesting scientific questions that are really what drives us on a day to day basis.”

    Do you know of anyone who uses the truth to deceive (欺骗) ? When someone tells you something that is true, but leaves out important information that should be included, he can give you a false picture.

    For example , some might say, "I just won a hundred dollars on the lottery (彩票) . It was great. I took that dollar ticket back to the store and turned it in for one hundred dollars! "

    This guy's a winner, right? Maybe, maybe not. We then discover that he bought $200 worth of tickets, and only one was a winner. He's really a big loser!

    He didn't say anything that was false, but he left out important information on purpose. That's called a half-truth. Half-truths are not technically lies, but they are just as dishonest.

    Some politicians often use this trick. Let's say that during Governor Smith's last term, her state lost one million jobs and gained three million jobs. Then she seeks another term. One of her opponents says, "During Governor Smith's term, the state lost one million jobs!" That's true. However, an honest statement would have been, " During Governor Smith's term , the state had a net gain of two million jobs. "

    Advertisers will sometimes use half-truths. It's against the law to make false statements so they try to mislead you with the truth. An advertisement might say, "Nine out of ten doctors advised their patients to take Yucky Pills to cure toothache. " It fails to mention that they only asked ten doctors and nine of them work for the Yucky Company.

    This kind of deception happens too often. It's a sad fact of life: Lies are lies , and sometimes the truth can lie as well.

    It started as a special day for Wesley Autrey, a 50-year-old construction worker in New York City. It was about 12:45 P.M., and he was waiting on a subway platform (月台) to take his daughters home before he went to work. He suddenly noticed a man nearby have convulsions (抽搐) and fall down suddenly. Mr. Autrey and two women went to help the stranger. The man, Cameron Hollopeter, managed to get to his feet, but then stumbled (绊倒) at the edge of the platform and fell onto the subway tracks. Mr. Autrey looked up and saw the lights of the subway train coming near through the tunnel.

    Mr. Autrey jumped onto the track immediately. He realized that he didn't have time to get Mr. Hollopeter and himself back up on the platform before the train arrived, so he lay on top of the man and pressed down as hard as he could. Although the driver tried to stop the train before it reached them, he couldn't. Five cars passed over them before the train finally stopped. The cars had passed only inches from his head.

    New York loves a hero. Mr. Autrey became an overnight hero and was named the “Subway Superman”. New York City Mayor Michael Bloomberg gave him the Bronze Medallion, the city's highest honor. He was asked to appear on several TV talk shows. He was also rewarded with money and gifts, such as $10,000 from Donald Trump, a $5,000 gift card from the Gap clothing store, a new Jeep, and Beyonce concert tickets.

    How did Autrey react (反应) to all this? He said, “I don't feel like I did anything great; I just saw someone who needed help. I did what I felt was right”.

                                                                      Amazon Best Sellers: Best Books

    A Higher Loyalty: Truth, Lies, and Leadership-April 17, 2018by James Comey

    In his book, former FBI director James Comey shares his never-before-told experiences from some of the highest-risk situations of his career in the past two decades of American government, exploring what good, ethical（道德的）leadership looks like, and how it drives sound decisions. His journey provides an entry into the corridors of power, and a remarkable lesson in what makes an effective leader.

    Hardcover $17.99

    12 Rules for Life: An Antidote to Chaos- January 23, 2018 by Jordan B. Peterson

    What does everyone in the modern world need to know? Famous psychologist Jordan B. Peterson's answer to this most difficult of questions uniquely combines the hard-won truths of ancient tradition with the great findings of most-advanced scientific research.

    Hardcover $15.57

    How to Read a Book: The Classic Guide to Intelligent Reading Revised Edition by Mortimer J. Adler, Charles Van Doren

    With half a million copies in print, How to Read a Book is the best and most successful guide to reading comprehension for the general reader, completely rewritten and updated with new material. Originally published in 1940, this book is a rare phenomenon, a living classic that introduces and clarifies the various levels of reading and how to achieve them-from elementary reading, through systematic skimming and inspectional reading, to speed reading.

     Paperback $10.31

    Everybody, Always: Becoming Love in a World Full of Setbacks and Difficult People- April 17, 2018 by Bob Goff

    Paperback $10.19

    What happens when we stop avoiding difficult people and simply love everyone? In his wildly entertaining and inspiring follow-up to the New York Times bestselling phenomenon Love Does, Bob Goff takes readers on a life-altering journey into the secret of living without fear, care, restriction, or worry.

    A new Magic Bench designed by Disney Research lets you interact (互动) with lovely animated (动画的) character—and no special glasses or earphones are required. Instead, the complete environment-the seat, the sitter and the cartoon characters-is mirrored on a screen opposite the bench making it possible for others to watch the scene unfold.

    How does the illusion work? A camera and sensor catch images and gather depth information about physical objects the bench and the person. And then computer translates them into the 3D animations. Meanwhile sensors of touch built into the bench deliver shaking that is happening at the same time and speed to animated actions on the screen, creating the illusion that the animated figures are occupying real-world space next to the user.

    "Our goal for this project was: hear a character coming, see them enter the space, and feel them sit next to you," said Moshe Mahler, principal digital artist at Disney Research. Unlike the traditional mobile technology, one of whose limitations is that only a single user can see its illusion, the Magic Bench allows groups of people to gather in a single environment and collectively participate in an augmented—reality (扩充实境) experience, all at the same time.

    In a video show, a small cartoon donkey runs into view and kicks the bench, causing sharp sound and making the seated person jump in surprise. Another test shows two people on the bench, reacting as they feel an animated rabbit skip up beside them and jump up and down. When a user passes his hand over the rabbit, a shadow moves across its head, as though it were occupying the same physical space as the person next to it.

Ottawa museum of Nature

    The range of products and services available at the Ottawa Museum of Nature is as broad and interesting as the range of activities.

    ·Birthday Parties: Give your child — aged from 4 to 12 — an unforgettable birthday party at the museum!

    ·Facility Rentals: Planning an event in Ottawa? Let our elegant, historic, castle-like setting and our dedicated staff help you create a magical event to remember!

    ·Travelling Exhibition Rentals Looking for new programming for your institution? We have many popular travelling exhibitions — small and large — that tour across Ottawa.

    ·Photo and Film Shoots: Either of our unique buildings would make great backdrops for your project. Whether for a commercial (广告), education, media, of fashion production, we've got a location for you.

    How to get here?

    If you are on Highway 417 (the Queensway), take the Metcalfe exit, No. 119. You Can see the museum from the highway look for a "castle" on the north side.

    Walking from the downtown The museum is only 20-minute walk fro Parliament Hill. Metcalfe Street takes you directly to the main entrance of the museum. Elgin and O'Connor streets take you to the outer edges of the museum grounds.

    Membership

    We strongly advise you to apply for our membership. A lot of on-site benefits are waiting for you:

    Free admission to the museum for one year;

    Free admission to temporary blockbuster exhibitions (i. e. no special-exhibition surcharge);

    Discount on museum programs, including adult workshops and special lectures (to a maximum of 20%);

    10 points for use at the Nature Trade;

    10% discount at thc Nature Café.