Georgia Tech develops inkjet-based circuits at fraction of time and cost

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Recent advances in chemically bonding metal particles allowed the researchers to use silver nanoparticle ink to print the circuits and avoid thermal bonding, or sintering, a time-consuming and potentially damaging technique due to the heat. Printing the circuits on resin-coated paper, PET film and glossy photo paper worked best. Researchers also made a list of materials to avoid, such as canvas cloths and magnet sheets.

via Georgia Tech develops inkjet-based circuits at fraction of time and cost.

From: Ink-Jet Printing Custom-Designed Micro Circuits

Initial reports of the technique, which the team demonstrated at a meeting of the Association for Computing Machinery in Zurich Sept. 10, described the result as a “paper computer,” though the best researchers could do was print a WiFi antenna, circuits for an LED and a 3D-printed flashlight. They also produced circuits containing microprocessors and memory-chip connectors that could potentially become components of an actual device, but the printing, ink and materials are still far too basic to allow that, according to Matt Johnson of conductive-ink manufacturer Bare Conductive, who was quoted in a New Scientist story about the demonstration.

Canonical shouldn’t abuse trademark law to silence critics of its privacy decisions

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To keep the balance between the integrity of our trademarks and the ability to to use and promote Ubuntu, we’ve tried to define a reasonable Intellectual Property Policy. You can read the full policy at http://www.canonical.com/intellectual-property-policy. As you can see from our policy, to use the Ubuntu trademarks and and Ubuntu word in a domain name would require approval from Canonical.

via Canonical shouldn’t abuse trademark law to silence critics of its privacy decisions | micah.f.lee.

Update:  From Canonical Blog.

In the case of fixubuntu.com, we were concerned that the use of the trademark implied a connection with and endorsement from the Ubuntu project which didn’t exist. The site owner has already agreed to remove the Ubuntu logo and clarified that there is no connection; from our perspective the situation has been resolved, and we have no issue with the site or the criticism it includes.  In fact, far from an trying to silence critics, our trademark policy actually calls out parody and criticism and other uses as being allowed when the marks are used appropriately.  (Please make the parodies funny – we need a good laugh as much as anyone!)

From Mark Shuttleworth:

This was a bit silly on our part, sorry. Our trademark guidelines specifically allow satire and critique (‘sucks sites’) and we should at most have asked him to state that his use of the logo was subject to those guidelines.

See What’s Inside the PlayStation 4 With These Exclusive Photos

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What we see is a hardware architecture that’s both simple and powerful. With longtime game designer Mark Cerny leading the way, lending his software-minded expertise to Ootori and the rest of the hardware engineering team, Sony abandoned the overly complex Cell microprocessor that drove the PlayStation 3, building the PS4 around an “x86″ chip similar to the processors that have driven most of our personal computers for the last three decades. The idea was to make it that much easier for developers to build games for the new console, to create the things that will ultimately capture our attention.

via See What’s Inside the PlayStation 4 With These Exclusive Photos | Game|Life | Wired.com.

High-gain patch antennas boost Wi-Fi capacity for Georgia Tech

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Patch antennas focus the radio beam within a specific area. (A couple of vendors, Ruckus Wireless and Xirrus, have developed their own built-in “smart” antennas that adjust and focus Wi-Fi signals on clients.) Depending on the beamwidth, the effect can be that of a floodlight or a spotlight, says Jeff Lime, Ventev’s vice president. Ventev’s newest TerraWave High-Density products focus the radio beam within narrower ranges than some competing products, and offer higher gain (in effect putting more oomph into the signal to drive it further), he says.

via High-gain patch antennas boost Wi-Fi capacity for Georgia Tech – Network World.

At Georgia Tech, each antenna focused the Wi-Fi signal from a specific overhead access point to cover a section of seats below it. Fewer users associate with each access point. The result is a kind of virtuous circle. “It gives more capacity per user, so more bandwidth, so a better user experience,” says Lime.

Sensor Fusion: High Speed Robots

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In this research we develop a janken (rock-paper-scissors) robot with 100% winning rate as one example of human-machine cooperation systems. Human being plays one of rock, paper and scissors at the timing of one, two, three. According to the timing, the robot hand plays one of three kinds so as to beat the human being.

Recognition of human hand can be performed at 1ms with a high-speed vision, and the position and the shape of the human hand are recognized. The wrist joint angle of the robot hand is controlled based on the position of the human hand. The vision recognizes one of rock, paper and scissors based on the shape of the human hand. After that, the robot hand plays one of rock, paper and scissors so as to beat the human being in 1ms.

via Sensor Fusion: High Speed Robots.

Hackers Take Limo Service Firm for a Ride

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It’s understandable why the company would decline to comment: Inside the plain text archive apparently stolen from the firm are more than 850,000 credit card numbers, expiry dates and associated names and addresses. More than one-quarter (241,000) of all compromised card numbers were high- or no-limit American Express accounts, card numbers that have very high resale value in the cybercrime underground.

via Hackers Take Limo Service Firm for a Ride — Krebs on Security.

Patent war goes nuclear: Microsoft, Apple-owned “Rockstar” sues Google

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This afternoon, that stockpile was finally used for what pretty much everyone suspected it would be used for—launching an all-out patent attack on Google and Android. The smartphone patent wars have been underway for a few years now, and the eight lawsuits filed in federal court today by Rockstar Consortium mean that the conflict just hit DEFCON 1.

Google probably knew this was coming. When it lost out in the Nortel auction, the company’s top lawyer, David Drummond, complained that the Microsoft-Apple patent alliance was part of a “hostile, organized campaign against Android.” Google’s failure to get patents in the Nortel auction was seen as one of the driving factors in its $12.5 billion purchase of Motorola in 2011.

via Patent war goes nuclear: Microsoft, Apple-owned “Rockstar” sues Google | Ars Technica.

Ultrasonics for Local Area Communication

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I intend to examine the prospects of ultrasonics for wireless, local area communication. In other words, I will try to decide whether or not it might be feasable to create a system for objects in the same room to communicate with one another by sharing information through ultrasonic sound. To do this, I will work through issues such as the spectrum, transducers, beam width, transmission distance, bandwidth, and noise.

This work builds on the work done by Vadim Gerasimov, in the Things That Talk project, that transmits data by sound in the audible range. His site is a good starting point to visit before working through this information.

via Ultrasonics for Local Area Communication.

Android tops 81 percent of smartphone market share in Q3

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Now that we know what smartphone market share looked like in the third quarter when broken down by manufacturer, it’s time to compare performance by platform. As you’d imagine, the world is still Android’s oyster. Strategy Analytics estimates that the OS has crossed the symbolic 80 percent mark, reaching 81.3 percent of smartphone shipments by the end of September. Not that Google was the only company doing well — Nokia’s strong US sales helped Windows Phone grow to 4.1 percent of the market, or nearly double what it had a year ago. Whether or not these trends continue is another matter. Although Android likely isn’t in danger given the launches of phones like the Galaxy Note 3, there are also new iPhones and Lumias on the scene; there may be one or two surprise upsets when the fourth quarter is over.

via Android tops 81 percent of smartphone market share in Q3.

How a grad student trying to build the first botnet brought the Internet to its knees

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On November 3, 1988, 25 years ago this Sunday, people woke up to find the Internet had changed forever. The night before, someone had released a malevolent computer program on the fledgling computer network. By morning, thousands of computers had become clogged with numerous copies of a computer “worm,” a program that spread from computer to computer much like a biological infection.

via How a grad student trying to build the first botnet brought the Internet to its knees.

Robert Morris’ father worked for the NSA at the time.

From: Robert Morris (cryptographer)

There is a description of Morris in Clifford Stoll‘s book The Cuckoo’s Egg. Many readers of Stoll’s book remember Morris for giving Stoll a challenging mathematical puzzle (originally due to John H. Conway) in the course of their discussions on computer security: What is the next number in the sequence 1 11 21 1211 111221? (known as the look-and-say sequence). Stoll chose not to include the answer to this puzzle in The Cuckoo’s Egg, to the frustration of many readers.[8]