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Marcus Maertens

Everything You Wanted to Know about Space Tourism but Were Afraid to Ask | Space Safety Magazine - 3 views

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    "chances are that if 700 passengers are flown annually, up to 10 of them might not survive the flight in the first years of the operations." most remarkable also the question who is to blame if a dead and burned space tourist corps comes crashing down from the sky into your car.
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    How sure is the information that a human body would not completely burn / ablate during atmospheric re-entry? I am not aware of any material ground tests in a plasma wind tunnel confirming that human tissue would survive re-entry from LEO.
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    Since a steak would not even be cooked by dropping it from very high altitudes (http://what-if.xkcd.com/28/) I would doubt that a space tourists body would desintegrate by atmospheric re-entry.
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    Funny link, however, some things are not clear enough: 1. Ablation rate is unknown 2. What are the entry conditions? The link suggests that the steak is just dropped (no initial velocity). 3. What about the ballistic coefficient? 4. How would the entry body orientation? It would be a quite non-steady state configuration I guess with heavy accelerations. 5. How would vacuum exposure impact on the water in the body/steak and what would be the consequence for ablation behaviour? 6. Does surface chemistry play a role (not ablation, but catalysis)? My conclusion: the example with the steak is a funny and not so bad exercise, not more.
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    This calls for some we serious simulations by the Petkow code it seems to me ...
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    I still would need some serious input data...
LeopoldS

Schumpeter: More than just a game | The Economist - 3 views

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    remember the discussion I tried to trigger in the team a few weeks ago ...
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    main quote I take from the article: "gamification is really a cover for cynically exploiting human psychology for profit"
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    I would say that it applies to management in general :-)
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    which is exactly why it will never work .... and surprisingly "managers" fail to understand this very simple fact.
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    ... "gamification is really a cover for cynically exploiting human psychology for profit" --> "Why Are Half a Million People Poking This Giant Cube?" http://www.wired.com/gamelife/2012/11/curiosity/
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    I think the "essence" of the game is its uselessness... workers need exactly the inverse, to find a meaning in what they do !
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    I love the linked article provided by Johannes! It expresses very elegantly why I still fail to understand even extremely smart and busy people in my view apparently waiting their time in playing computer games - but I recognise that there is something in games that we apparently need / gives us something we cherish .... "In fact, half a million players so far have registered to help destroy the 64 billion tiny blocks that compose that one gigantic cube, all working in tandem toward a singular goal: discovering the secret that Curiosity's creator says awaits one lucky player inside. That's right: After millions of man-hours of work, only one player will ever see the center of the cube. Curiosity is the first release from 22Cans, an independent game studio founded earlier this year by Peter Molyneux, a longtime game designer known for ambitious projects like Populous, Black & White and Fable. Players can carve important messages (or shameless self-promotion) onto the face of the cube as they whittle it to nothing. Image: Wired Molyneux is equally famous for his tendency to overpromise and under-deliver on his games. In 2008, he said that his upcoming game would be "such a significant scientific achievement that it will be on the cover of Wired." That game turned out to be Milo & Kate, a Kinect tech demo that went nowhere and was canceled. Following this, Molyneux left Microsoft to go indie and form 22Cans. Not held back by the past, the Molyneux hype train is going full speed ahead with Curiosity, which the studio grandiosely promises will be merely the first of 22 similar "experiments." Somehow, it is wildly popular. The biggest challenge facing players of Curiosity isn't how to blast through the 2,000 layers of the cube, but rather successfully connecting to 22Cans' servers. So many players are attempting to log in that the server cannot handle it. Some players go for utter efficiency, tapping rapidly to rack up combo multipliers and get more
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    why are video games so much different than collecting stamps or spotting birds or planes ? One could say they are all just hobbies
LeopoldS

Edward Snowden may be the last of the human spies | Christopher Steiner | Comment is free | guardian.co.uk - 2 views

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    reads way too pessimistic to me - or too optimistic if you are an AI guy .... Luis? Dario?
santecarloni

The Higgs, Boltzmann Brains, and Monkeys Typing Hamlet | The Crux | Discover Magazine - 7 views

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    good luck with this....
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    Nice article, actually! It summarizes in "human readable format" why and how too many cosmologists and string theorists just went bozo...
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    really ! this article should go for the ignobels ! http://arxiv.org/abs/0808.3778 I wonder which substance theorists are taking... I will avoid...! but really this is very preoccupating: "complex structures will occasionally emerge from the vacuum as quantum fluctuations, at a small but nonzero rate per unit spacetime volume. An intelligent observer, like a human, could be one such structure." Is this a new alternative to Darwinism...??? a support to creationism ?? How can a physicist can write such non-sense ?
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    and this is published in PRD !!!
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    In 1996 Sokal hoaxed sociologists with his famous nonsense text on political implications of quantum gravity. Can one play a similar game with "researchers" on Boltzmann brains, multiverses, string landscapes or similar? I doubt, this is just reality satire that can't be topped.
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    Poor Boltzmann ...
zoervleis

Moral Machine - 1 views

shared by zoervleis on 17 Aug 16 - No Cached
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    "A platform for public participation in and discussion of the human perspective on machine-made moral decisions" Machine Ethics is basically the return of philosophy through code. Here you can learn a bit about it, and help the MIT collect data on how humans make choices when faced with ethical dilemmas, and how we perceive AIs making such choices.
fichbio

Long-Term Space Flight Simulation Reveals Infradian Rhythmicity in Human Na + Balance - 3 views

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    For the first time scientists have identified monthly hormonal cycles in human males
jaihobah

The Genome Project-Write | Science - 2 views

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    These people want to construct a synthetic human genome
santecarloni

Space Station Spin-Off Could Protect Mars-Bound Astronauts From Radiation - Technology Review - 0 views

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    Superconducting technology developed for the International Space Station could protect humans on the way to the asteroids or Mars. But will it be worth the cost?
santecarloni

Physics of writing is derived at last - physicsworld.com - 0 views

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    While humans have been writing for at least 5000 years, we have surprisingly little understanding of the physics underlying how ink moves from pen to paper. Now, physicists in South Korea and the US have worked out a theory - backed by experiment - that suggests the ink's flow rate depends on a tug-of-war that is played out between the capillary properties of pen and paper.
santecarloni

Introducing the 'nano-ear' - physicsworld.com - 0 views

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    Physicists in Germany have developed the first-ever "nano-ear" capable of detecting sound on microscopic length scales with an estimated sensitivity that is six orders of magnitude below the threshold of human hearing.
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    one can see that you are in bed and bored :-)
Luke O'Connor

Software Detects Motion that the Human Eye Can't See - 4 views

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    The video technique could lead to remote diagnostic methods, like the ability to detect the heart rate of someone on a screen.
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    Are there potential applications to earth observation etc..?
LeopoldS

The future is bright for humanity - opinion - 05 March 2012 - New Scientist - 1 views

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    This is almost word for word the title Andrés gave to the first presentation of the team to DG ten years ago ...
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    There's a whole series of futuristic articles, may be worth having a look: http://www.newscientist.com/special/deep-future
santecarloni

Intel Reveals Neuromorphic Chip Design  - Technology Review - 1 views

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    Intel's goal is to build chips that work more like the human brain. Now its engineers think they know how
LeopoldS

The bonobo genome compared with the chimpanzee and human genomes : Nature : Nature Publishing Group - 1 views

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    Look at this! Seems that we are as close to the bonobos as we are to the chimpanzees If only we resolved more to their ways of getting rid of stress (sex) more than using the chimpanzees' (aggression)...
LeopoldS

TWINKIND | 3D photo figurines - 1 views

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    looks like the first "killer app" for 3D printers I am aware of ... highly useful and solving humanities most pressing problems as expected
Thijs Versloot

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.
LeopoldS

David Miranda, schedule 7 and the danger that all reporters now face | Alan Rusbridger | Comment is free | The Guardian - 0 views

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    During one of these meetings I asked directly whether the government would move to close down the Guardian's reporting through a legal route - by going to court to force the surrender of the material on which we were working. The official confirmed that, in the absence of handover or destruction, this was indeed the government's intention. Prior restraint, near impossible in the US, was now explicitly and imminently on the table in the UK. But my experience over WikiLeaks - the thumb drive and the first amendment - had already prepared me for this moment. I explained to the man from Whitehall about the nature of international collaborations and the way in which, these days, media organisations could take advantage of the most permissive legal environments. Bluntly, we did not have to do our reporting from London. Already most of the NSA stories were being reported and edited out of New York. And had it occurred to him that Greenwald lived in Brazil?

    The man was unmoved. And so one of the more bizarre moments in the Guardian's long history occurred - with two GCHQ security experts overseeing the destruction of hard drives in the Guardian's basement just to make sure there was nothing in the mangled bits of metal which could possibly be of any interest to passing Chinese agents. "We can call off the black helicopters," joked one as we swept up the remains of a MacBook Pro.

    Whitehall was satisfied, but it felt like a peculiarly pointless piece of symbolism that understood nothing about the digital age. We will continue to do patient, painstaking reporting on the Snowden documents, we just won't do it in London. The seizure of Miranda's laptop, phones, hard drives and camera will similarly have no effect on Greenwald's work.

    The state that is building such a formidable apparatus of surveillance will do its best to prevent journalists from reporting on it. Most journalists can see that. But I wonder how many have truly understood
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    Sarah Harrison is a lawyer that has been staying with Snowden in Hong Kong and Moscow. She is a UK citizen and her family is there. After the miranda case where the boyfriend of the reporter was detained at the airport, can Sarah return safely home? Will her family be pressured by the secret service? http://www.bbc.co.uk/news/world-latin-america-23759834
Tom Gheysens

Programmable glue made of DNA directs tiny gel bricks to self-assemble | KurzweilAI - 3 views

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    New method could help to reconnect injured organs or build functional human tissues from the ground up
LeopoldS

Interacting Gears Synchronize Propulsive Leg Movements in a Jumping Insect - 0 views

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    not even gears are a human invention it seems ... Gears are found rarely in animals and have never been reported to intermesh and rotate functionally like mechanical gears. We now demonstrate functional gears in the ballistic jumping movements of the flightless planthopper insect Issus. The nymphs, but not adults, have a row of cuticular gear (cog) teeth around the curved medial surfaces of their two hindleg trochantera. The gear teeth on one trochanter engaged with and sequentially moved past those on the other trochanter during the preparatory cocking and the propulsive phases of jumping. Close registration between the gears ensured that both hindlegs moved at the same angular velocities to propel the body without yaw rotation. At the final molt to adulthood, this synchronization mechanism is jettisoned.
johannessimon81

3,000 Years of Human History, Described in One Set of Mathematical Equations - 2 views

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    Reminds me of psychohistory in Asimov's Foundation trilogy
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