Department of Mathematics
 Search | Help | Login | pdf version | printable version

Math @ Duke





.......................

.......................


Yunliang Yu, IT Senior Manager

Yunliang Yu

Open source is an investment in the future.

FDS Motto: we serve and empower the faculty.

Contact Info:
Office Location:  029D Physics
Office Phone:  (919) 660-2803
Email Address:   send me a message
Web Page:   http://www.math.duke.edu/~yu

Office Hours:

12:01AM - 12:02AM every other day except today.
Not by appt :-)
Specialties:

Mathematics
Recent Publications

  1. Y. Yu, test 123 (March, 2010). [PNG, PDF]

Famous Sayings:
Your dream will come true, if you eat your soup.
    --- Angela Yu
Don't be a turkey; read a book.
    --- Christina Yu
Security = avoid "unexpected inputs for unintended results".
    --- moi
To learn and practice what is learned from time to time is pleasure, is it not? To have friends from afar is happiness, is it not? To be unperturbed when not appreciated by others is a gentleman, is it not?
    --- Kungfu Zi
Better to light a candle than to curse the darkness.
    --- Chinese Proverb

mathprograms.org, academicjobsonline.org, mathjobs.org, ShortURLs, sharedworkingplace.org, chinesecalligraphyandwoodcarving.

/. headline news :-)

  • Silicon Valley Is Filling Up With Ex-Obama Staffers
    2015-07-06T12:13:00+00:00
    HughPickens.com writes: Edward-Isaac Dovere reports in Politico that the fastest-growing chapter of the Obama alumni association is in Silicon Valley. For the people who helped get Obama elected and worked for him once he did, there's something about San Francisco and its environs that just feels right: the emphasis on youth and trying things that might fail, chasing that feeling of working for the underdog, and even using that word "disrupting" to describe what they do. "A lot of people who moved out here were present at the creation of the Obama '08 campaign," says Tommy Vietor. "There's a piece of them that wants to replicate that." Vietor left the White House two years ago, and he and his business partner, former Obama speechwriter Jon Favreau, founded a communications strategy firm with a focus on speechwriting for tech and other start-ups. "If you're writing for a CEO out here, they're more likely to be your peer than your grandfather," says Vietor. "They're young, they're cool, they get it." Other former Obama staffers who have come to Silicon Valley include former campaign manager and White House adviser David Plouffe at Uber, Kyle O'Connor at Nest, Semonti Stephens at Twitter; Mike Masserman, at Lyft; Brandon Lepow at Facebook; Nicole Isaac, at LinkedIn; Liz Jarvis-Shean at Civis; Jim Green and Vivek Kundra at Salesforce, Alex McPhillips at Google; Gillian Bergeron, at NextDoor; Natalie Foster at the Institute for the Future; Catherine Bracy at Code for America; Hallie Montoya Tansey at Target Labs. Nick Papas, John Baldo, Courtney O'Donnell and Clark Stevens at AirBnB, and Jessica Santillo at Uber. There are so many former Obama staffers in the Bay Area that a recent visit by former White House senior adviser David Axelrod served as a reunion of sorts, with more than a dozen campaign and White House veterans gathering over lunch to discuss life after the administration. Obama himself rarely misses an opportunity to come to San Francisco. He says he loves the energy there, loves the people and according to Dovere, the city's ultra-liberal leanings mean he was greeted as a rock star even during the dark days before last year's midterms. Obama's even become friendly with Elon Musk. "There should be a welcome booth at the SFO airport," says Jon Carson, the former Organizing for Action executive director now at SolarCity.

    Read more of this story at Slashdot.

  • Researchers Study "Harbingers of Failure," Consumers Who Habitually Pick Losers
    2015-07-06T11:32:00+00:00
    AmiMoJo writes: Is your favorite TV show always getting cancelled? Did you love Crystal Pepsi? Were you an early adopter of the Zune? If you answered yes to these questions, researchers say you might be a "Harbinger of Failure." In a study published in the Journal of Marketing Research, researchers identified a group of consumers whose preferences can predict products that will fail. “Certain customers systematically purchase new products that prove unsuccessful,” wrote the study authors. “Their early adoption of a new product is a strong signal that a product will fail.”

    Read more of this story at Slashdot.

  • Chinese Zoo Animals Monitored For Earthquake Prediction
    2015-07-06T09:02:00+00:00
    An anonymous reader writes: Seismologists in Nanjing have set up seven observation centers at zoos and animal parks in the region to see if animals can predict when an earthquake may strike. At least three kinds of animals in the earthquake stations should corroborate each other when bizarre behavior occurs, said Zhao Bing, head of Nanjing earthquake monitoring. Discovery reports: "According to one English-language Chinese news outlet, 'At Banqiao ecological park the behavior of around 200 pigs, 2,000 chickens, and fish in a 15-hectare pond are closely monitored to detect signals of an earthquake. Breeders here create daily reports regarding animal behavior for Nanjing's seismological departments.' The news report noted that the park relies 'mainly on employees closely watching the animals' for seismological significance."

    Read more of this story at Slashdot.

  • Brazilian Evangelicals Set Up a "Sin Free" Version of Facebook
    2015-07-06T06:03:00+00:00
    An anonymous reader writes: With $16,000 and the help of the Mayor of Ferraz de Vasconcelos, the town he lives in, Atilla Barros and three other Evangelical Christians created Facegloria, a "sin-free" version of Facebook. Swearing is banned, along with about 600 other words, as well as any violent or erotic content, and depictions of homosexual activity. 100,000 users have signed up the first month. "In two years we hope to get to 10 million users in Brazil. In a month we have had 100,000 and in two we are expecting a big increase thanks to a mobile phone app," Barros says. Acir dos Santos, the mayor, adds: "Our network is global. We have bought the Faceglory domain in English and in all possible languages. We want to take on Facebook and Twitter here and everywhere."

    Read more of this story at Slashdot.

  • Linux 4.2-rc1 Is One of the Largest Kernel Releases of Recent Times
    2015-07-06T03:00:00+00:00
    An anonymous reader writes: Linus Torvalds ended the Linux 4.2 kernel merge window today by releasing Linux 4.2-rc1. He quickly wrote, "I thought this release would be one of the biggest ones ever, but it turns out that it will depend on how you count." By most metrics, Linux 4.2 is shaping up to be a very large release. Linux 4.2 is bringing plenty of new features including the new 'AMDGPU' kernel graphics driver, Intel Broxton support, NCQ TRIM improvements, F2FS file-system encryption, new ARM CPU/board support, Renesas R8/300 arch support, and many other additions.

    Read more of this story at Slashdot.

  • Ask Slashdot: If You Could Assemble a "FrankenOS" What Parts Would You Use?
    2015-07-06T00:01:00+00:00
    rnws writes: While commenting about log-structured file systems in relation to flash SSDs, I referenced Digital's Spiralog [pdf], released for OpenVMS in 1996. This got me thinking about how VMS to this day has some of, if not the best storage clustering (still) in use today. Many operating systems have come and gone over the years, particularly from the minicomputer era, and each usually had something unique it did really well. If you could stitch together your ideal OS, then which "body parts" would you use from today and reanimate from the past? I'd probably start with VMS's storage system, MPE's print handling, OS/2's Workplace Shell, AS/400's hardware abstraction and GNU's Bash shell. What would you choose?

    Read more of this story at Slashdot.

  • Greece Rejects EU Terms
    2015-07-05T22:43:00+00:00
    New submitter Thammuz writes: With almost all ballots counted, Greeks voted overwhelmingly "No" on Sunday in a bailout referendum, defying warnings from the EU that rejecting new austerity terms would set their country on a path out of the euro. Figures published by the interior ministry showed nearly 62% of those whose ballots had been counted voting "No", against 38% voting "Yes". "Today we celebrate the victory of democracy, but tomorrow all together we continue and complete a national effort for exiting this crisis," Greek Prime Minister Alexis Tsipras said in a televised address.

    Read more of this story at Slashdot.

  • Dartmouth Contests Showcase Computer-Generated Creativity
    2015-07-05T21:20:00+00:00
    An anonymous reader writes: A series of contests at Dartmouth College will pit humans versus machines. Both will produce literature, poetry and music which will then be judged by humans who will try and determine which selections were computer made. "Historically, often when we have advances in artificial intelligence, people will always say, 'Well, a computer couldn't paint a sunset,' or 'a computer couldn't write a beautiful love sonnet,' but could they? That's the question," said Dan Rockmore, director of the Neukom Institute for Computational Science at Dartmouth.

    Read more of this story at Slashdot.

  • Wired Looks Back At 'Mondo 2000'
    2015-07-05T19:59:00+00:00
    destinyland writes: On a day when America looks back on those who came before, Wired is remembering a pioneering technology magazine named Mondo 2000 — and sharing video of its editors' legendary appearance on a mid-90s PBS series, "The Internet Cafe". When its host questioned them about cyberpunk, they turned the interview into an ironic media stunt by providing a live, sneering cyberpunk model named Malice (wearing a fake neural implant on his head), as the words "real cyberpunk" jokingly flashed on the bottom of the screen. "At a time when few people outside academia had access to the internet, Mondo 2000 was many a wannabe hacker's introduction to the online world," Wired remembers fondly, even acknowledging that they'd "borrowed" their own magazine's design motif from Mondo 2000, in those early years before ISPs started popularizing consumer internet access.

    Read more of this story at Slashdot.

  • Checking Mammoth DNA Against Elephants Hints At How They Got Hairy
    2015-07-05T18:43:00+00:00
    An anonymous reader writes: A new study on mammoth DNA comparing the hairy animals to their cousins, the Asian and African elephants, has isolated what genes separate it from its warm-weather cousins. The study found that genes controlling skin and hair development, fat metabolism, insulin signaling, and skull shape, differed from today's contemporary elephant species. "They have this weird hump on their back, which is thought to be something like a camel hump — sort of a fat deposit that stored water and energy for the cold, dark winters," says Vincent Lynch, an evolutionary biologist at the University of Chicago.

    Read more of this story at Slashdot.

  • Seahorse Tails Could Inspire New Generation of Robots
    2015-07-05T17:26:00+00:00
    An anonymous reader writes: Researchers at Clemson University have studied the makeup of seahorse tails and rendered its mechanics using 3D-printing in an effort to provide flexibility to stiff robots. Unlike most creatures, seahorse's tail is made of square prisms. Michael Porter, assistant professor in mechanical engineering at Clemson University said, "Almost all animal tails have circular or oval cross-sections—but not the seahorse's. We wondered why. We found that the squared-shaped tails are better when both grasping and armor functions are needed."

    Read more of this story at Slashdot.

  • Army Exoskeleton Prototype Helps Soldiers Learn To Shoot
    2015-07-05T16:10:00+00:00
    An anonymous reader writes: Infantrymen live by their shooting skills, but becoming an expert marksman can take a long time. U.S. Army researchers are working on a way to improve these skills with the help of the MAXFAS, an arm exoskeleton that uses arm braces to correct involuntary arm shakes. Designed At the U.S. Army Research Laboratory by Dan Baechle, the MAXFAS has been shown to improve aim even after users have taken it off. "Soldiers need to be able to aim and shoot accurately and quickly in the chaos of the battlefield," Baechle said. "Training with MAXFAS could improve Soldiers' accuracy, and reduce current time and ammunition requirements in basic training."

    Read more of this story at Slashdot.

  • Glitch Halts New Horizons Operations As It Nears Pluto
    2015-07-05T14:55:00+00:00
    An anonymous reader writes: NASA says their New Horizons probe suffered a temporary communication breakdown on Saturday, 10 days before it's supposed to fly past Pluto. The mission team is working to restore normal communications. "Full recovery is expected to take from one to several days," NASA wrote in a status report on Saturday. "New Horizons will be temporarily unable to collect science data during that time."

    Read more of this story at Slashdot.

  • Russian Progress Cargo Ship Docks With Space Station
    2015-07-05T13:40:00+00:00
    An anonymous reader writes: An unmanned Russian cargo ship has successfully docked with the International Space Station. The successful launch, rendezvous and docking came after two resupply failures. A Progress launched in April spun out of control and a week ago, a SpaceX Falcon 9 rocket disintegrated, destroying a supply ship loaded with supplies and equipment. "Crew reports, 'feels like Christmas in July,'" the International Space Station tweeted.

    Read more of this story at Slashdot.

  • How Apple Music Can Disrupt Users' iTunes Libraries
    2015-07-05T12:27:00+00:00
    An anonymous reader writes: Early adopters of Apple Music are warning others they could get more than they bargained for if they intend to download tracks for offline listening. Since Apple Music is primarily a streaming service, this functionality necessitates turning on iCloud Music for syncing purposes. The way Apple syncs files is to scan your library for known music files, and if it finds one, the service gives your account access to Apple's canonical copy. Unfortunately, this wipes out any custom edits you made to the file's metadata. For those who have put a lot of time into customizing their library, this can do a lot of damage to their organizational system. Apple's efforts to simplify and streamline the process have once again left advanced users with a difficult decision to make.

    Read more of this story at Slashdot.

 

dept@math.duke.edu
ph: 919.660.2800
fax: 919.660.2821

Mathematics Department
Duke University, Box 90320
Durham, NC 27708-0320