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Webinar: Solving system level design riddle - 1 views

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    In the space industry, concurrent design is frequently implemented as requirements are frequently not set but developed along the design process. In many cases this is due to the interconnection between (sub)systems. In the industry however, this is hardly done, but it is becoming more relevant as lead times and innovation speed needs to increase. There is a webinar tomorrow 10 december from Agile on this topic regarding the semiconductor industry
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    missed it ... did anybody attend?
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Operation Socialist: How GCHQ Spies Hacked Belgium's Largest Telco - 4 views

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    interesting story with many juicy details on how they proceed ... (similarly interesting nickname for the "operation" chosen by our british friends) "The spies used the IP addresses they had associated with the engineers as search terms to sift through their surveillance troves, and were quickly able to find what they needed to confirm the employees' identities and target them individually with malware. The confirmation came in the form of Google, Yahoo, and LinkedIn "cookies," tiny unique files that are automatically placed on computers to identify and sometimes track people browsing the Internet, often for advertising purposes. GCHQ maintains a huge repository named MUTANT BROTH that stores billions of these intercepted cookies, which it uses to correlate with IP addresses to determine the identity of a person. GCHQ refers to cookies internally as "target detection identifiers." Top-secret GCHQ documents name three male Belgacom engineers who were identified as targets to attack. The Intercept has confirmed the identities of the men, and contacted each of them prior to the publication of this story; all three declined comment and requested that their identities not be disclosed. GCHQ monitored the browsing habits of the engineers, and geared up to enter the most important and sensitive phase of the secret operation. The agency planned to perform a so-called "Quantum Insert" attack, which involves redirecting people targeted for surveillance to a malicious website that infects their computers with malware at a lightning pace. In this case, the documents indicate that GCHQ set up a malicious page that looked like LinkedIn to trick the Belgacom engineers. (The NSA also uses Quantum Inserts to target people, as The Intercept has previously reported.) A GCHQ document reviewing operations conducted between January and March 2011 noted that the hack on Belgacom was successful, and stated that the agency had obtained access to the company's
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    I knew I wasn't using TOR often enough...
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    Cool! It seems that after all it is best to restrict employees' internet access only to work-critical areas... @Paul TOR works on network level, so it would not help here much as cookies (application level) were exploited.
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Nasa validates 'impossible' space drive (Wired UK) - 3 views

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    NASA validates the EmDrive (http://emdrive.com/) technology for converting electrical energy into thrust. (from the website: "Thrust is produced by the amplification of the radiation pressure of an electromagnetic wave propagated through a resonant waveguide assembly.")
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    I would be very very skeptic on this results and am actually ready to take bets that they are victims of something else than "new physics" ... some measurement error e.g.
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    Assuming that this system is feasible, and taking the results of Chinese team (Thrust of 720 mN http://www.wired.co.uk/news/archive/2013-02/06/emdrive-and-cold-fusion), I wonder whether this would allow for some actual trajectory maneuvers (and to which degree). If so, can we simulate some possible trajectories, e.g. compare the current solutions to this one ? For example, Shawyer (original author) claims that this system would be capable of stabilizing ISS without need for refueling. Other article on the same topic: http://www.theverge.com/2014/8/1/5959637/nasa-cannae-drive-tests-have-promising-results
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    To be exact, the chinese reported 720mN and the americans found ~50microN. The first one I simply do not believe and the second one seems more credible, yet it has to be said that measuring such low thrust levels on a thrust-stand is very difficult and prone to measurement errors. @Krzys, the thrust level of 720mN is within the same range of other electric propulsion systems which are considered - and even used in some cases - for station keeping, also for the ISS actually (for which there are also ideas to use a high power system delivering several Newtons of thrust). Then on the idea, I do not rule out that an interaction between the EM waves and 'vacuum' could be possible, however if this would be true then this surely would be detectable in any particle accelerator as it would produce background events/noise. The energy densities involved and the conversion to thrust via some form of interaction with the vacuum surely could not provide thrusts in the range reported by the chinese, nor the americans. The laws of momentum conservation would still need to apply. Finally, 'quantum vacuum virtual plasma'.. really?
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    I have to join the skeptics on this one ...
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Quantum biology: Algae evolved to switch quantum coherence on and off -- ScienceDaily - 3 views

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    Scientists have discovered how algae that survive in very low levels of light are able to switch on and off a weird quantum phenomenon that occurs during photosynthesis. The function in the algae of this quantum effect, known as coherence, remains a mystery, but it is thought it could help them harvest energy from the sun much more efficiently. Working out its role in a living organism could lead to advances such as better organic solar cells.
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    very very nice! we tried already a few years back to find an angle to see how we could study quantum phenomena occuring in plants and photosynthsis is one of the great examples since somehow plants manage to make the phenomena work for them at elevated temperatures, a feat in itself ... any good idea most welcome!!!
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    Anna maybe? Joe?
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JupyterLab is Ready for Users - Jupyter Blog - 5 views

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    Next level Jupyter notebook!
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Dmitry Medvedev reveals aliens are among us - 6 views

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    I Knew!!! I Knew!!! They are all around. I always though Marek was one :) "I believe in Father Frost. But not too deeply. But anyway, you know, I'm not one of those people who are able to tell the kids that Father Frost does not exist"
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    His rival putin on the other hand... He got into an ultra-light aircraft to guide birds during their migration - from the video it seems that only very few birds think he is credible (as a guide). --> http://www.telegraph.co.uk/news/worldnews/vladimir-putin/9524900/Flying-Vladimir-Putin-leads-birds-on-first-ever-migration-in-latest-publicity-stunt.html
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    Yup. My structural perfection is matched only by my hostility.
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Google Says the FBI Is Secretly Spying on Some of Its Customers | Threat Level | Wired.com - 3 views

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    not a surprise though still bad to read ....
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    On a side note, it's hilarious to read an article on something repeatedly referred to as being secret...
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    quite self-explanatory described though: "The terrorists apparently would win if Google told you the exact number of times the Federal Bureau of Investigation invoked a secret process to extract data about the media giant's customers. That's why it is unlawful for any record-keeper to disclose it has received a so-called National Security Letter. But under a deal brokered with the President Barack Obama administration, Google on Tuesday published a "range" of times it received National Security Letters demanding it divulge account information to the authorities without warrants. It was the first time a company has ever released data chronicling the volume of National Security Letter requests. National Security Letters allow the government to get detailed information on Americans' finances and communications without oversight from a judge. The FBI has issued hundreds of thousands of NSLs and has even been reprimanded for abusing them. The NSLs are written demands from the FBI that compel internet service providers, credit companies, financial institutions and businesses like Google to hand over confidential records about their customers, such as subscriber information, phone numbers and e-mail addresses, websites visited and more as long as the FBI says the information is "relevant" to an investigation." and ""You'll notice that we're reporting numerical ranges rather than exact numbers. This is to address concerns raised by the FBI, Justice Department and other agencies that releasing exact numbers might reveal information about investigations. We plan to update these figures annually," Richard Salgado, a Google legal director, wrote in a blog post. Salgado was not available for comment. What makes the government's position questionable is that it is required by Congress to disclose the number of times the bureau issues National Security Letters. In 2011, the year with the latest available figures, the FBI issued 16,511 National Sec
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New Techniques from Google and Ray Kurzweil Are Taking Artificial Intelligence to Anoth... - 1 views

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    Winter is coming... and deep learning, too!
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    "Sergey Brin has said he wants to build a benign version of HAL in 2001: A Space Odyssey" ... didn't they try to do that in that movie called "2001: A Space Odyssey" ?

A 3D bioprinting - 5 views

started by fichbio on 17 Feb 16 no follow-up yet
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Measurement of Impulsive Thrust from a Closed Radio-Frequency Cavity in Vacuum (AIAA) - 2 views

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    An intermediate level discussion of those results by Scott Manley (Physicist, Kerbal Space Program YouTuber): https://www.youtube.com/watch?v=JGcvxg7jJTs
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The thermodynamics of learning - 3 views

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    It is typically considered that brain's process of learning is highly energy efficient. While investigating how efficiently the brain can learn new information, physicists have found that, at the neuronal level, learning efficiency is ultimately limited by the laws of thermodynamics.
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The NSA Is Building the Country's Biggest Spy Center (Watch What You Say) | Threat Leve... - 0 views

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    scaring ...
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Darpa shredder challenge - 2 views

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    $50k prize to put documents back together
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    Final level will be something that has been burned to ashes which were then flushed down the toilet...
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New DARPA challenge wants unique algorithms for space applications - 4 views

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    "On March 28, the Defense Advanced Research Projects Agency will kick of another one of its highly successful challenges this time looking for teams or individuals to develop unique algorithms to control small satellites on-board the International Space Station. " Will the ACT participate?
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    That would be wrong on so many levels...
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    Could not find out what the prize money is? Also does not seem clear to me how three cubes can catch an object "flying" in the opposite direction... But the approach is nice to see
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ScienceShot: Unraveling the Mystery of Self-Planting Seeds - ScienceNOW - 0 views

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    ...I told you we had to hurry up with our Ariadna! btw, they studied the coiling at the cellular level (but I am scared to read the paper to see if there is something left for us..)
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An optical lattice clock with accuracy and stability at the 10-18 level : Nature : Natu... - 0 views

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    Progress in atomic, optical and quantum science1, 2 has led to rapid improvements in atomic clocks. At the same time, atomic clock research has helped to advance the frontiers of science, affecting both fundamental and applied research. The ability to control quantum states of individual atoms and photons is central to quantum information science and precision measurement, and optical clocks based on single ions have achieved the lowest systematic uncertainty of any frequency standard3, 4, 5. Although many-atom lattice clocks have shown advantages in measurement precision over trapped-ion clocks6, 7, their accuracy has remained 16 times worse8, 9, 10. Here we demonstrate a many-atom system that achieves an accuracy of 6.4 × 10−18, which is not only better than a single-ion-based clock, but also reduces the required measurement time by two orders of magnitude. By systematically evaluating all known sources of uncertainty, including in situ monitoring of the blackbody radiation environment, we improve the accuracy of optical lattice clocks by a factor of 22. This single clock has simultaneously achieved the best known performance in the key characteristics necessary for consideration as a primary standard-stability and accuracy. More stable and accurate atomic clocks will benefit a wide range of fields, such as the realization and distribution of SI units11, the search for time variation of fundamental constants12, clock-based geodesy13 and other precision tests of the fundamental laws of nature. This work also connects to the development of quantum sensors and many-body quantum state engineering14 (such as spin squeezing) to advance measurement precision beyond the standard quantum limit.
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Cognitive computing - 2 views

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    Has this not been underway for quite some time now? Not sure if this 'new era' is coming any day soon. Thoughts?
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    If they want to give the computers "senses" they should also go ahead and give them a body slightly taller than humans ...and guns. So once they reach a critical level of consciousness they can really go to town... http://0-media-cdn.foolz.us/ffuuka/board/tg/image/1385/54/1385549501025.jpg
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    Neural networks!!! However, indeed, "senses" will not make any sense towards human-like computing without bodies that physically interact with the world. That's where most of these things are going wrong. Perception and cognition are for action. Without action coming from the machine side all these ideas simply fail.
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New polymers could provide breakthrough in li-ion batteries - 0 views

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    DeSimone and his team have been working with PFPE for years, and during their research, the crew found that another polymer electrolyte, polyethylen glycol or PEG, and PFPE could combine to dissolve salt, and potentially function as an electrolyte. When his team attached the PFPE to dimethyl carbonate, an electrolyte traditionally used in batteries, the resulting PFPE-DMC was a polymer that could move a battery's ions with insane levels of efficiency while remaining stable.
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Voyager I has officially entered interstellar space - 2 views

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    NASA JPL presentation on how and when Voyager exited the Heliosphere about a year ago - fascinating!
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    NASA doing a great job here - very good presentation at a perfect abstraction level. I recommend watching the whole record.
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