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Juxi Leitner

RLV and Space Transport News » Suborbital RLV flights essential to researcher - 0 views

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    "Flights into space are limited," said University of Central Florida Associate Professor Joshua Colwell. "This is an excellent opportunity to gather additional data that can only be obtained from these kinds of flights and which is essential for our research to move forward." --> the same was mentioned a few times during the NEOMeX workshop...
pacome delva

Ants Take a Cue From Facebook - ScienceNOW - 2 views

  • This pattern of interactions matches how humans share information on social networking sites like Facebook, says the study's lead author, biologist Noa Pinter-Wollman. Most Facebook users are connected to a relatively small number of friends. A handful of users, however, have thousands of friends and act as information hubs.
  • computer simulations of the ants' social networks showed that information flows fastest when a small number of individuals act as information hubs. Fast-flowing information allows ant colonies to respond faster to threats such as predators and weather hazards, Pinter-Wollman says.
  • These well-connected ants might have an advantage in responding to threats, but they are also more vulnerable to infectious diseases, which can spread quickly through the colony.
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    for Tobi! nice analogy between the threat and the fast responding in human network
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    Yet another example of "because scientifically accurate title would sound sooo boring".
santecarloni

Vision of beauty - physicsworld.com - 6 views

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    "As sensors in digital cameras fast approach the 127 megapixels of the human eye, clinical trials are under way to implant this technology directly into the retina".
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    Wow
LeopoldS

Greg's Cable Map - 1 views

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    this is the infrastructure that satellites have to compete with ....
  • ...3 more comments...
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    the largest cable into the Netherlands comes in apparently at Katwijk - we should have super fast internet!!! :-)
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    You mean: "then why don't we have super fast internet?" :-) If you zoom the map in, it's actually way past Noordwijk. My quess is this could be attached somewhere near the naval radio station area? This remembered me the good old times of bike trips in the dunes, eh...
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    well, the description says clearly Katwijk; am quite sure that the maps are less accurate than the description ...
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    I guess you are right... Is ACT already planning a find-and-cut expedition?
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    now that we have the boat and thanks to Camilla it is still floating after the deluge ....
LeopoldS

Projects - Open Hardware Repository - 4 views

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    who would be willing to go through this list and see if there is anything we could use in space (or are maybe already using ...) Dejan? Lionel?
Marion Nachon

NASA research offers new prospect of water on Mars - 4 views

NASA scientists are seeing new evidence that suggests traces of water on Mars are under a thin varnish of iron oxide, or rust, similar to conditions found on desert rocks in California's Mojave Des...

started by Marion Nachon on 02 Jul 11 no follow-up yet
LeopoldS liked it
Luís F. Simões

Google AI Challenge: Ants - 2 views

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    "Ants is a multi-player strategy game set on a plot of dirt with water for obstacles and food that randomly drops. Each player has one or more hills where ants will spawn. The objective is for players to seek and destroy the most enemy ant hills while defending their own hills. Players must also gather food to spawn more ants, however, if all of a player's hills are destroyed they can't spawn any more ants."
Thijs Versloot

Possible gamma ray burst detected in Andromeda - 0 views

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    Short GRBS are formed when neutron stars (in a binary system) slam into one another. On the other hand, long GRBs are a result of massive stars going supernova. Stars end their lives in violent explosions, typically leaving behind remnants like neutron stars.
Nicholas Lan

Google and Facebook Investigating Launching Satellites - 1 views

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    unfortunately the original article is subscription only "Among the evidence the article cites for this conclusion is Google's recent hiring of Brian Holtz and Dave Bettinger. Both came from companies (O3b and VT iDirect respectively) that specialize in communication satellites. Google has also invested in O3b and a current Google employee sits on company's board. A Boeing representative told The Information that Facebook and Google are "beginning to show a broader interest in satellite technology." While both companies are looking to space to broaden their reach, the ad-supported Google has the potential resources (cash) and gumption to actually follow through in the immediate future."
Thijs Versloot

Quantum positioning system for submarines - 0 views

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    Positioning via accumulated accelerometer data used to stabilize cold trapped atoms. Current systems are not very reliable for submarines, which cannot use GPS underwater. To create the supersensitive quantum accelerometers, Stansfield's team was inspired by the Nobel-prizewinning discovery that lasers can trap and cool a cloud of atoms placed in a vacuum to a fraction of a degree above absolute zero. Once chilled, the atoms achieve a quantum state that is easily perturbed by an outside force - and another laser beam can then be used to track them. This looks out for any changes caused by a perturbation, which are then used to calculate the size of the outside force.
Nicholas Lan

Hands-on with the Muse brain sensing headband -- the most important wearable of 2014 (exclusive) - 4 views

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    interestingly it looks like a subject could wear it all day while doing normal stuff http://www.choosemuse.com/ "I got my hands on an early version of Interaxon's brainwave reading headband, the Muse, and I think this could be the most important wearable of the year. And that's saying a lot, considering I've seen 2014′s entire lineup for health tech at the Consumer Electronic Show as well as a few undisclosed athletic devices slated for later this year."
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    ..."alerts the users with sights and sounds when they are producing brain waves associated with calm and focus." ALERT! ALERT! ALERT! YOU ARE CALM AND FOCUSSED! :-D
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    indeed the app that comes with it sounds really lame but it comes with an sdk
jcunha

Why Quantum "Clippers" Will Distribute Entanglement Across The Oceans - 0 views

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    Quantum internet will enable perfectly secure communications, but the technology and means to build the required quantum memories and routers are still many years distant. The proposal here is to store qubits and send them in containers over the oceans. Researchers claim that it is possible to send information at bandwidths measured in teraahertz outperforming the predictions of a quantum router internet. It can be thought in space systems as well. Then the problem is still for how long are we able to store a qubit, without dephasing... PS: As a curiosity, you can find a very interesting book about containers and how in some way they changed our world: Mark Levinson's book 'The Box' http://press.princeton.edu/titles/9383.html Maybe they will do it again
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.
LeopoldS

Schneier on Security: NSA Targets the Privacy-Conscious for Surveillance - 0 views

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    ever wanted to feel an important extremist to be of interest to big brother - just google for tor :-) it was never easier to be come an "extremist" what are the consequences of this? new opportunities for secure space-based communication services?
Thijs Versloot

The challenges of Big Data analysis @NSR_Family - 2 views

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    Big Data bring new opportunities to modern society and challenges to data scientists. On the one hand, Big Data hold great promises for discovering subtle population patterns and heterogeneities that are not possible with small-scale data. On the other hand, the massive sample size and high dimensionality of Big Data introduce unique computational and statistical challenges, including scalability and storage bottleneck, noise accumulation, spurious correlation, incidental endogeneity and measurement errors. These challenges are distinguished and require new computational and statistical paradigm. This paper gives overviews on the salient features of Big Data and how these features impact on paradigm change on statistical and computational methods as well as computing architectures.
Thijs Versloot

Meet the electric life forms that live on pure energy - 3 views

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    Unlike any other living thing on Earth, electric bacteria use energy in its purest form - naked electricity in the shape of electrons harvested from rocks and metals. We already knew about two types, Shewanella and Geobacter. Now, biologists are showing that they can entice many more out of rocks and marine mud by tempting them with a bit of electrical juice. Experiments growing bacteria on battery electrodes demonstrate that these novel, mind-boggling forms of life are essentially eating and excreting electricity.
Isabelle Dicaire

Testing of a femtosecond pulse laser in outer space : Scientific Reports : Nature Publishing Group - 2 views

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    Good news for fundamental physics and Earth system science, femtosecond lasers are now about to achieve space qualification thanks to fibre optics!  Applications include high resolution spectroscopy, absolute laser ranging, mapping of the geo-potential and testing of the theory of general relativity to name a few!
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    nice paper by the Koreans, did not know that they had already such a laser in orbit for a year. How much would this type be upscalable for our needs? in case we have not, we should reference it
jcunha

Pathological Science - 0 views

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    More in the ethic realm, I once was in a talk by Ivan Schuller (http://ischuller.ucsd.edu/) where he revisited the concept of Langmuir's Pathological Science (http://yclept.ucdavis.edu/course/280/Langmuir.pdf), defined as the act in which "people are tricked into false results ... by subjective effects, wishful thinking or threshold interactions" providing a list of aspects common to fraudulent science. Unfortunately there is no video of this very interesting talk, but the slides are available here: http://ethics.ucsd.edu/seminars/seminars/2006/summaries/Pathological_Science.pdf
Tom Gheysens

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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