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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
Attitude is half reality.
    --- me?
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 :-)

  • SpaceX Pulls the Plug On Its Red Dragon Plans
    2017-07-20T07:00:00+00:00
    SpaceX has largely confirmed the rumors that the company is no longer planning to send an uncrewed version of its Dragon spacecraft to Mars in 2020, or later. Ars Technica reports: The company had planned to use the propulsive landing capabilities on the Dragon 2 spacecraft -- originally developed for the commercial crew variant to land on Earth -- for Mars landings in 2018 or 2020. Previously, it had signed an agreement with NASA to use some of its expertise for such a mission and access its deep-space communications network. On Tuesday, however, during a House science subcommittee hearing concerning future NASA planetary science missions, Florida Representative Bill Posey asked what the agency was doing to support privately developed planetary science programs. Jim Green, who directs NASA's planetary science division, mentioned several plans about the Moon and asteroids, but he conspicuously did not mention Red Dragon. After this hearing, SpaceX spokesman John Taylor didn't return a response to questions from Ars about the future of Red Dragon. Then, during a speech Wednesday at the International Space Station Research and Development Conference, Musk confirmed that the company is no longer working to land Dragon propulsively for commercial crew. "Yeah, that was a tough decision," Musk acknowledged Wednesday with a sigh. "The reason we decided not to pursue that heavily is that it would have taken a tremendous amount of effort to qualify that for safety for crew transport," Musk explained Wednesday. "There was a time when I thought the Dragon approach to landing on Mars, where you've got a base heat shield and side mounted thrusters, would be the right way to land on Mars. But now I'm pretty confident that is not the right way." Musk added that his company has come up with a "far better" approach to landing on Mars that will be incorporated into the next iteration of the company's proposed Mars transportation hardware.

    Read more of this story at Slashdot.

  • Dadbot: How a Son Made a Chatbot of His Dying Dad
    2017-07-20T03:30:00+00:00
    theodp writes: In A Son's Race to Give His Dying Father Artificial Immortality (Warning: may be paywalled; alternate source), James Vlahos recounts his efforts to turn the story of his father's life -- as told by his 80-year-old Dad in his final months after being diagnosed with stage IV lung cancer -- into what Vlahos calls "a Dadbot -- a chatbot that emulates not a children's toy but the very real man who is my father." Given the limits of tech at the time (2016) and his own inexperience as a programmer, Vlahos recognized that the bot would never be more than a shadow of his real dad, but hoped to get the bot to communicate in his father's distinctive manner and convey at least some sense of his personality. Of the first time he demoed the bot for his parents, Vlahos writes: "Emboldened, I bring up something that has preoccupied me for months. 'This is a leading question, but answer it honestly,' I say, fumbling for words. 'Does it give you any comfort, or perhaps none -- the idea that whenever it is that you shed this mortal coil, that there is something that can help tell your stories and knows your history?' My dad looks off. When he answers, he sounds wearier than he did moments before. 'I know all of this shit,' he says, dismissing the compendium of facts stored in the Dadbot with a little wave. But he does take comfort in knowing that the Dadbot will share them with others. 'My family, particularly. And the grandkids, who won't know any of this stuff.' He's got seven of them, including my sons, Jonah and Zeke, all of whom call him Papou, the Greek term for grandfather. 'So this is great,' my dad says. 'I very much appreciate it.'"

    Read more of this story at Slashdot.

  • Researchers Have Figured Out How To Fake News Video With AI
    2017-07-20T02:05:00+00:00
    An anonymous reader quotes a report from Quartz: A team of computer scientists at the University of Washington have used artificial intelligence to render visually convincing videos of Barack Obama saying things he's said before, but in a totally new context. In a paper published this month, the researchers explained their methodology: Using a neural network trained on 17 hours of footage of the former U.S. president's weekly addresses, they were able to generate mouth shapes from arbitrary audio clips of Obama's voice. The shapes were then textured to photorealistic quality and overlaid onto Obama's face in a different "target" video. Finally, the researchers retimed the target video to move Obama's body naturally to the rhythm of the new audio track. In their paper, the researchers pointed to several practical applications of being able to generate high quality video from audio, including helping hearing-impaired people lip-read audio during a phone call or creating realistic digital characters in the film and gaming industries. But the more disturbing consequence of such a technology is its potential to proliferate video-based fake news. Though the researchers used only real audio for the study, they were able to skip and reorder Obama's sentences seamlessly and even use audio from an Obama impersonator to achieve near-perfect results. The rapid advancement of voice-synthesis software also provides easy, off-the-shelf solutions for compelling, falsified audio. You can view the demo here: "Synthesizing Obama: Learning Lib Sync from Audio"

    Read more of this story at Slashdot.

  • Game of Thrones Pirates Being Monitored By HBO, Warnings On The Way
    2017-07-20T01:25:00+00:00
    HBO is leaving no stones unturned in keeping Game of Thrones' piracy under control. The company is monitoring various popular torrent swarms and sending thousands of warnings targeted at internet subscribers whose connections are used to share the season 7 premiere of the popular TV series, reports TorrentFreak: Soon after the first episode of the new season appeared online Sunday evening, the company's anti-piracy partner IP Echelon started sending warnings targeted at torrenting pirates. The warnings in question include the IP-addresses of alleged BitTorrent users and ask the associated ISPs to alert their subscribers, in order to prevent further infringements. "We have information leading us to believe that the IP address xx.xxx.xxx.xx was used to download or share Game of Thrones without authorization," the notification begins. "HBO owns the copyright or exclusive rights to Game of Thrones, and the unauthorized download or distribution constitutes copyright infringement. Downloading unauthorized or unknown content is also a security risk for computers, devices, and networks." Under US copyright law, ISPs are not obligated to forward these emails, which are sent as a DMCA notification. However, many do as a courtesy to the affected rightsholders. The warnings are not targeted at a single swarm but cover a wide variety of torrents. TorrentFreak has already seen takedown notices for the following files, but it's likely that many more are being tracked.

    Read more of this story at Slashdot.

  • Ethereum Co-Founder Says Cryptocurrencies Are 'a Ticking Time Bomb'
    2017-07-20T00:45:00+00:00
    randomErr writes from a report via Business Insider (alternate source): Ethereum, the rival to bitcoin, has been on a tear. Its founders said the latest trend in the cryptocurrency space may not be as good for the cryptocurrency as some might think. Ethereum is up 1,700% over the last year, and that spike has occurred in tandem with the growth of the hottest new trend in fundraising: initial coin offerings. Approximately $1.2 billion has been raised by the new cryptocurrency-based capital raising method this year, according to Autonomous Next, a financial technology analytics service. It is a trend that has sparked excitement across Wall Street. But the cofounder of the company behind the cryptocurrency, Charles Hoskinson, told Bloomberg that initial coin offerings may not benefit Ethereum. "People say ICOs are great for ethereum because, look at the price, but it's a ticking time-bomb," said Hoskinson. "There's an over-tokenization of things as companies are issuing tokens when the same tasks can be achieved with existing blockchains. People are blinded by fast and easy money."

    Read more of this story at Slashdot.

  • Samsung's 'Bixby' Voice Assistant Finally Launches In US
    2017-07-20T00:05:00+00:00
    After 3 months, Samsung announced that the voice capabilities of its digital assistant are now rolling out to U.S. Galaxy S8 and S8+ owners. Now, if you happen to own a Galaxy S8 or S8+, the physical Bixby button on the lefthand side of your phone will be able to actually do something somewhat useful. The Verge reports: Bixby's voice capabilities have been available in the US as part of an opt-in beta test, and Samsung says that feedback has led to faster response times, improved comprehension of varied phrasing around the same question, better hands-free operation, and more. Over 100,000 users of the flagship devices have enrolled in the early access program and issued over 4 million voice commands. Also, Samsung says Bixby can now read aloud your latest SMS messages and emails -- if you use its stock apps on the Galaxy S8. Bixby can be activated with a push of the dedicated Bixby button located on the side of the Galaxy S8 and S8+, or by saying "hi Bixby." Like Siri and Google Assistant, Bixby can handle alarms, send texts, and so on, but its real power lies in the ability to access granular phone settings or -- in supported apps -- automatically move through several menu screens to perform commands that Google Assistant simply can't do. Samsung says that deep learning should allow Bixby to improve over time as it begins to recognize users' preferences and ways of speaking. Here's a video showing some of the voice commands Bixby can respond to.

    Read more of this story at Slashdot.

  • Hacker Steals $30 Million Worth of Ethereum From Parity Multi-Sig Wallets
    2017-07-19T23:20:00+00:00
    An anonymous reader quotes a report from Bleeping Computer: An unknown hacker has used a vulnerability in an Ethereum wallet client to steal over 153,000 Ether, worth over $30 million dollars. The hack was possible due to a flaw in the Parity Ethereum client. The vulnerability allowed the hacker to exfiltrate funds from multi-sig wallets created with Parity clients 1.5 and later. Parity 1.5 was released on January 19, 2017. The attack took place around 19:00-20:00 UTC and was immediately spotted by Parity, a company founded by Gavin Wood, Ethereum's founder. The company issued a security alert on its blog. The Ether stolen from Parity multi-sig accounts was transferred into this Ethereum wallet, currently holding 153,017.021336727 Ether. Because Parity spotted the attack in time, a group named "The White Hat Group" used the same vulnerability to drain the rest of Ether stored in other Parity wallets that have not yet been stolen by the hacker. This money now resides in this Ethereum wallet. According to messages posted on Reddit and in a Gitter chat, The White Hat Group appears to be formed of security researchers and members of the Ethereum Project that have taken it into their own hands to secure funds in vulnerable wallets. Based on a message the group posted online, they plan to return the funds they took. Their wallet currently holds 377,116.819319439311671493 Ether, which is over $76 million.

    Read more of this story at Slashdot.

  • Navy Unveils First Active Laser Weapon In Persian Gulf
    2017-07-19T22:40:00+00:00
    schwit1 shares a report from CNN: In the sometimes hostile waters of the Persian Gulf looms the U.S. Navy's first -- in fact, the world's first -- active laser weapon. The LaWS, an acronym for Laser Weapons System, is not science fiction. It is not experimental. It is deployed on board the USS Ponce amphibious transport ship, ready to be fired at targets today and every day by Capt. Christopher Wells and his crew. It costs "about a dollar a shot" to fire, said Lt. Cale Hughes, laser weapons system officer. LaWS begins with an advantage no other weapon ever invented comes even close to matching. It moves, by definition, at the speed of light. For comparison, that is 50,000 times the speed of an incoming ICBM. For the test, the USS Ponce crew launched the target -- a drone aircraft, a weapon in increasing use by Iran, North Korea, China, Russia and other adversaries. In an instant, the drone's wing lit up, heated to a temperature of thousands of degrees, lethally damaging the aircraft and sending it hurtling down to the sea. "It operates in an invisible part of the electromagnetic spectrum so you don't see the beam, it doesn't make any sound, it's completely silent and it's incredibly effective at what it does," said Hughes.

    Read more of this story at Slashdot.

  • Facebook Is Looking Into Allowing Paywall For Selected Media Stories
    2017-07-19T22:00:00+00:00
    New submitter sarbonn writes: Facebook is testing whether or not it can start charging for stories by placing a paywall that appears after ten stories have been viewed from one of its media sources. An interesting takeaway is that Facebook would like to do this by avoiding the mandatory 30 percent cut that Apple and Google get from their stores by going around their app stores. This is being targeted for around October. The news comes from Campbell Brown, who heads Facebook's new partnerships business. "We are in early talks with several news publishers about how we might better support subscription business models on Facebook. As part of the Facebook Journalism Project, we are taking the time to work closely together with our partners and understand their needs," Brown told TechCrunch in a statement via a spokesperson.

    Read more of this story at Slashdot.

  • Russia Is Investigating Fidget Spinners After Reports Claim They 'Zombify' Youth
    2017-07-19T21:20:00+00:00
    An anonymous reader quotes a report from The Verge: In a recent report, Russia-24, a state-owned news channel, suggests that fidget spinners are being used by Russian opposition parties in order to recruit young people. As reported by The New York Times, the reporters in Russia-24's initial story say, "It is a mystery why it has become so popular in Russia right now. Who is promoting this to the masses so actively?" The video segment says the toys were being distributed at a rally for opposition leader Alexei Navalny and in online ads that direct viewers to YouTube channels that promote opposition politicians. The reporters said that while the toy's popularity was declining in the West, fidget spinners are more popular than ever in Russia. "As you can see here there is only writing in English, on the other side there is not a word in Russian," says one of the show's anchors during the report, presenting a new spinner in its packaging to the camera. According to Newsweek, a second report on Russia-24 also aired on July 12th, directly saying fidget spinners were an "object for zombifying" and a form of "hypnosis." The program featured a report from psychologist Svetlana Filatova, claiming that the spinners could help dexterity in children but otherwise "dulls" people's minds. The reports spurred Russia's consumer protection agency, Rospotrebnadzor, into action, saying on Tuesday they would launch an investigation into the toy.

    Read more of this story at Slashdot.

  • Telecom Lobbyists Downplayed 'Theoretical' Security Flaws in Mobile Data Backbone
    2017-07-19T20:01:00+00:00
    An anonymous reader shares a report: According to a confidential document obtained by Motherboard, wireless communications lobby group CTIA took issue with an in-depth report by the Department of Homeland Security on mobile device security, including flaws with the SS7 network. In a white paper sent to members of Congress and the Department of Homeland Security, CTIA, a telecom lobbying group that represents Verizon, AT&T, and other wireless carriers, argued that "Congress and the Administration should reject the [DHS] Report's call for greater regulation" while downplaying "theoretical" security vulnerabilities in a mobile data network that hackers may be able to use to monitor phones across the globe, according to the confidential document obtained by Motherboard. However, experts strongly disagree about the threat these vulnerabilities pose, saying the flaws should be taken seriously before criminals exploit them. SS7, a network and protocol often used to route messages when a user is roaming outside their provider's coverage, is exploited by criminals and surveillance companies to track targets, intercept phone calls or sweep up text messages. In some cases, criminals have used SS7 attacks to obtain bank account two-factor authentication tokens, and last year, California Rep. Ted Lieu said that, for hackers, "the applications for this vulnerability are seemingly limitless."

    Read more of this story at Slashdot.

  • Why is Comcast Using Self-driving Cars To Justify Abolishing Net Neutrality?
    2017-07-19T19:20:00+00:00
    Earlier this week, Comcast filed its comments in favor of the FCC's plan to eliminate the 2015 net neutrality rules. While much of the document was devoted to arguments we've heard before -- Comcast believes the current rules are anti-competitive and hurt investment, but generally supports the principles of net neutrality -- one statement stood out. The Verge adds: Buried in the 161-page document was this quirky assertion (emphasis ours): "At the same time, the Commission also should bear in mind that a more flexible approach to prioritization may be warranted and may be beneficial to the public... And paid prioritization may have other compelling applications in telemedicine. Likewise, for autonomous vehicles that may require instantaneous data transmission, black letter prohibitions on paid prioritization may actually stifle innovation instead of encouraging it. In other words, Comcast is arguing for paid prioritization and internet fast lanes to enable self-driving cars to communicate better with other vehicles and their surrounding environment, thus making them a safer and more efficient mode of transportation. The only problem is that autonomous and connected cars don't use wireless broadband to communicate. When cars talk with each other, they do it by exchanging data wirelessly over an unlicensed spectrum called the Dedicated Short Range Communications (DSRC) band, using technology similar to Wi-Fi. The FCC has set aside spectrum in the 5.9GHz band specifically for this purpose, and it is only meant to be used for vehicle-to-everything (V2X) applications. That includes vehicle-to-vehicle (V2V), vehicle-to-infrastructure (V2I), and vehicle-to-pedestrian (V2P) -- so cars talking to other cars, to traffic signals, to the phone in your pocket... you name it. Soon enough, all cars sold in the US will be required to include V2V technology for safety purposes, if the Department of Transportationâ(TM)s new rule goes into effect.

    Read more of this story at Slashdot.

  • EU Court to Rule On 'Right to Be Forgotten' Outside Europe
    2017-07-19T18:40:00+00:00
    The European Union's top court is set to decide whether the bloc's "right to be forgotten" policy stretches beyond Europe's borders, a test of how far national laws can -- or should -- stretch when regulating cyberspace. From a report: The case stems from France, where the highest administrative court on Wednesday asked the EU's Court of Justice to weigh in on a dispute between Alphabet's Google and France's privacy regulator over how broadly to apply the right (Editor's note: the link could be paywalled; alternative source), which allows EU residents to ask search engines to remove some links from searches for their own names. At issue: Can France force Google to apply it not just to searches in Europe, but anywhere in the world? The case will set a precedent for how far EU regulators can go in enforcing the bloc's strict new privacy law. It will also help define Europe's position on clashes between governments over how to regulate everything that happens on the internet -- from political debate to online commerce. France's regulator says enforcement of some fundamental rights -- like personal privacy -- is too easily circumvented on the borderless internet, and so must be implemented everywhere. Google argues that allowing any one country to apply its rules globally risks upsetting international law and, when it comes to content, creates a global censorship race among autocrats.

    Read more of this story at Slashdot.

  • Many Firms Are 'AI Washing' Claims of Intelligent Products
    2017-07-19T18:01:00+00:00
    Software companies are seeking to exploit the current artificial intelligence craze by "AI washing" -- exaggerating the role of AI in their products, according to a new report by Gartner, the research firm. From a report: Gartner, which tracks commercial manias through a tool it calls the Hype Cycle, compares what is currently going on in AI with a prior surge in environmental over-statement -- "greenwashing, in which companies exaggerate the environmental-friendliness of their products or practices for business benefit." The bottom line: More than 1,000 vendors say their products employ AI, but many are "applying the AI label a little too indiscriminately," Gartner says in its report. Kriti Sharma, who runs the AI team at Sage, tells Axios that a lot of companies are seeking to solve problems using AI that would be better done by humans. And what is often called AI "is just automation that you are doing," she said.

    Read more of this story at Slashdot.

  • Microsoft's Wilsonville Jobs Are Going To China, Underscoring Travails of Domestic Tech Manufacturing
    2017-07-19T17:21:00+00:00
    An anonymous reader tips us a story: Just two years ago, Microsoft cast its Wilsonville factory as the harbinger of a new era in American technology manufacturing. The tech giant stamped, "Manufactured in Portland, OR, USA" on each Surface Hub it made there. It invited The New York Times and Fast Company magazine to tour the plant in 2015, then hired more than 100 people to make the enormous, $22,000 touch-screen computer. But last week Microsoft summoned its Wilsonville employees to an early-morning meeting and announced it will close the factory and lay off 124 employees -- nearly everyone at the site -- plus dozens of contract workers. Panos Panay, the vice president in charge of the Surface product group, traveled from corporate headquarters in Redmond, Washington, to tell the staff that Microsoft was moving production to the same place it makes all other Surface products. Though workers present say he didn't disclose the location, Microsoft has previously said it makes its other Surface computers in China. The company hasn't explained, in public or to its Wilsonville employees, why it gave up on domestic manufacturing so quickly and didn't respond to repeated inquiries for comment. But the only thing surprising about Microsoft's decision is that it tried to make its computers in the U.S. in the first place.

    Read more of this story at Slashdot.

 

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