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LeopoldS

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.
santecarloni

Engineers enlist weather model to optimize offshore wind plan | Stanford School of Engi... - 0 views

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    Using a sophisticated weather model, environmental engineers at Stanford have defined optimal placement of a grid of four wind farms off the U.S. East Coast. The model successfully balances production at times of peak demand and significantly reduces costly spikes and zero-power events.
ESA ACT

Johnson Electro Mechanical Systems - 0 views

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    he JTEC is an all solid-state engine that operates on the Ericsson cycle. Equivalent to Carnot, the Ericsson cycle offers the maximum theoretical efficiency available from an engine operating between two temperatures.
Francesco Biscani

What Larry Page really needs to do to return Google to its startup roots - 0 views

  • I worked at Google from 2005-2010, and saw the company go through many changes, and a huge increase in staff.  Most importantly, I saw the company go from a place where engineers were seen as violent disruptors and innovators, to a place where doing things “The Google Way” was king, and where thinking outside the box was discouraged and even chastised.
  • Let engineers do what they do best, and forget the rest.
  • This is probably the most important single point.  Engineers at Google spend way too much time fussing about with everything other than engineering and product design.
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  • Meetings.  Seriously, people are drenched in “status update” and “team” meetings.
  • Weekly Snippets, perf, etc. I was continually amazed by the amount of “extra cruft work” that goes on.  I know it sounds important, but engineers should be coding & designing.
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    An opinion piece by an ex-Googler, talking, among other things, about how corporate culture is creeping into Google. I've highlighted some snippets which I've found eerily familiar :)
johannessimon81

High efficiency solid state heat engine - 0 views

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    We discussed this today during coffee. The inventor claims that he claims that a pressure differential can push hydrogen through a proton conductive membrane (thereby stripping off the electrons) which flow through an electric circuit and provide electric power. The type of membrane is fairly similar to that found in a hydrogen fuel cell. If the pressure differential is cause by selective heating this is in essence a heat engine that directly produces electricity. The inventor claims that this could be a high efficiency alternative to thermoelectric devices and could even outperform PV and Sterling engines with an efficiency close to that of fuel cells (e.g., ~60% @ dT=600K). I could not find any scientific publications as the inventor is not affiliated to any University - he has however an impressive number of patents from a very wide field (e.g., the "Super Soaker" squirt gun) and has worked on several NASA and US military projects. His current research seams to be funded by the latter as well. Here are some more links that I found: http://www.theatlantic.com/magazine/archive/2010/11/shooting-for-the-sun/308268/ http://www.johnsonems.com/?q=node/13 http://scholar.google.nl/scholar?q=%22lonnie+g+johnson%22+&btnG=&hl=nl&as_sdt=0%2C5
Juxi Leitner

Rocket company tests world's most powerful ion engine - space - 05 October 2009 - New S... - 2 views

  • On Wednesday, it ran its VX-200 engine at 201 kilowatts in a vacuum chamber in Houston, passing the 200-kilowatt mark for the first time.
ESA ACT

Grand Challenges for Engineering - 0 views

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    The goal: To determine the Grand Challenges for Engineering during the next 100 years and, perhaps, beyond.
Annalisa Riccardi

Rapyuta: The RoboEarth Cloud Engine - 0 views

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    RoboEarth Cloud Engine now complements the RoboEarth knowledge database with computational capabilities and allows web services dedicated to robots
H H

The Search Engine You're Probably Not Using - 4 views

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    The search engine that gives you google results without NSA knowing.
Joris _

Is It Time To Revamp Systems Engineering? | AVIATION WEEK - 1 views

  • They both believe the systems engineering processes that have served the aerospace and defense community since pre-Apollo days are no longer adequate for the large and complex systems ­industry is now developing.
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    1) it has to actively work and produce a result that's what you intended 2) the design must be robust. 3) it should be efficient 4) it should minimize unintended consequences. "But we have to establish a formal, mathematically precise mechanism to measure complexity and adaptability . . . [where] adaptability means the system elements have sufficient margin, and can serve multiple purposes." "We need to break the paradigm of long cycles from design to product" some interesting questions....
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    indeed ... already hotly debated in CDF ... any suggestions in addition to what we already contributed to this (e.g. system level optimisation)
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    what is the outcome of the CDF study ? I think actually that optimisation is not at all the key point. As it is stressed in this news, it is robustness (points 2 and 4). This is something we should think about ...
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    SYSTEM OF SYSTEMS, SYSTEM OF SYSTEMS!!! :-D
Joris _

NASA could buy plasma engine for station reboost services - 1 views

  • enough to generate 1lb of thrust (0.00445kN) and fulfil the critical role of giving the Space Station a periodic altitude boost.
  • the most powerful electric engine in operation toda
  • , NASA is contracting Ad Astra Rocket for a lunar tug concept study, to take cargo from the Earth to the Moon and back, and deliver equipment in preparation for a human landing
Francesco Biscani

Ion engine could one day power 39-day trips to Mars - space - 22 July 2009 - New Scientist - 0 views

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    As I mentioned it into my thesis, this engine bridges the gap between chemical and low-thrust propulsion systems. To be more specific: Isp should vary between 1000 and 30000s, and the thrust amplitude should reach up to 1200 N. It is interesting to see that the concept is actually moving forward ...
ESA ACT

Fertigungsverfahren Thixomoulding: Vorbild Treibsand - Auto - SPIEGEL ONLINE - Nachrichten - 0 views

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    A method, formerly unknown to me. Maybe the mechanical engineers find it interesting.
evo ata

Future Human Evolution - 1 views

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    Scientific and speculative articles about the future of human evolution regarding to artificial intelligence, genetic engineering, transhumanism, nanotechnology, space colonization, time travel, life extension and human enhancement
Thijs Versloot

Hypersonic Successor to Legendary SR-71 Blackbird Spy Plane Unveiled - 1 views

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    he new SR-72 will use a turbine-based combined cycle (TBCC) that will employ the turbine engine at lower speeds, and use a scramjet at higher speeds. A scramjet engine is designed to operate at hypersonic velocities by compressing the air through a carefully designed inlet, but needs to be traveling supersonic before it is practical to begin with. So far research projects from NASA, the Air Force and other Pentagon entities have not been able to solve the problem of transitioning from the subsonic flight regime, through hypersonic flight with a single aircraft. Same problem as Reaction Engines is trying to solve, so I am not sure whether they actually cracked it. In any case, nice pictures. Not sure why the exhaust color is purple in color. Its not running on Argon I believe.
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    Weird article. Intermediate thruster stage (Ramjet) is missing. Scramjet has supersonic combustion and a normal turbine delivers subsonic flows. Even with afterburner - the Scramjet inlet would decelerate the flow down to subsonic velocity with "normal" subsonic combustion. The only thing I can imagine is that the Scramjet stage is bi-functional and covers both, subsonic and supersonic combustion. But the article doesn't say anything about it.
Daniel Hennes

Google Just Open Sourced the Artificial Intelligence Engine at the Heart of Its Online ... - 2 views

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    TensorFlow is an open source software library for numerical computation using data flow graphs. Nodes in the graph represent mathematical operations, while the graph edges represent the multidimensional data arrays (tensors) communicated between them. The flexible architecture allows you to deploy computation to one or more CPUs or GPUs in a desktop, server, or mobile device with a single API. TensorFlow was originally developed by researchers and engineers working on the Google Brain Team within Google's Machine Intelligence research organization for the purposes of conducting machine learning and deep neural networks research, but the system is general enough to be applicable in a wide variety of other domains as well.
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    And the interface even looks a bit less retarded than theano
Dario Izzo

Engineering a plastic-eating enzyme - 7 views

Nice news! Gives hope for our future ....

science BIO

johannessimon81

Fission reactor + stirling engine tested by NASA - 1 views

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    NASA has tested a prototype of a new design for a small uranium reactor as a power source for deep space exploration. In principle this should pose a smaller radiation danger during launch and more energy per mass compared to RTGs.
Marcus Maertens

US Petition for building a Death Star 2016 - 3 views

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    By focusing our defense resources into a space-superiority platform and weapon system such as a Death Star, the government can spur job creation in the fields of construction, engineering, space exploration, and more, and strengthen our national defense.
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    I want to sign, it is totally a meaningful idea .... ! Just remember not to put the nuclear energy source at the end of a tunnel which has an opening on the surface :)
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    Bad news from this frontier: https://petitions.whitehouse.gov/response/isnt-petition-response-youre-looking As the Americans are not going for it, it might be a good opportunity for Europeans to make a real difference in space.
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    Merkel seems anyway a bit short of ideas ...
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