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Juxi Leitner

JAXA | Launch Day of the H-IIA Launch Vehicle No. 17 (H-IIA F17) - 2 views

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    Interesting launch, not just the first Japanese Venus [0] mission, also an interplanetary university mission [1] and also a solar sail mission [2]. Looks very interesting ... [0] http://www.jaxa.jp/countdown/f17/index_e.html [1] http://www.unisec.jp/unitec-1/en/about_unitec-1.html [2] http://www.jaxa.jp/projects/sat/ikaros/index_e.html
Juxi Leitner

Overview of Advanced Concepts for Space Access Part 1 - 1 views

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    did just find it and flew over it, will read it when i am back, but might be of interest for the new RF maybe
Luís F. Simões

The Fallout of a Helium-3 Crisis : Discovery News - 3 views

  • So short in fact, that last year when the looming crisis, which reporters had been covering for years, became official, the price of helium-3 went from $150 per liter to $5,000 per liter.
  • The science, medical and security uses for helium-3 are so diverse that the crisis banded together a hodge-podge of universities, hospitals and government departments to try and find workable alternatives and engineer ways to recycle the gas they do have.
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    So, which shall it be? Are we going to increase the production of hydrogen bombs, or can we finally go back to the Moon (http://en.wikipedia.org/wiki/Helium-3#Extraterrestrial_supplies) ?
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    None of these. Either you recycle, or you take it from natural sources on Earth. Although most people don't know - there is plenty of natural He3 on Earth. It's just nonsens to use it for energy production (in fusion reactors) since the energy belance for getting the He3 from these source on Earth is just negative. Or you try to substitute He3.
Luís F. Simões

Bitcoin P2P Currency: The Most Dangerous Project We've Ever Seen - 10 views

  • After month of research and discovery, we’ve learned the following:1. Bitcoin is a technologically sound project.2. Bitcoin is unstoppable without end-user prosecution.3. Bitcoin is the most dangerous open-source project ever created.4. Bitcoin may be the most dangerous technological project since the internet itself.5. Bitcoin is a political statement by technotarians (technological libertarians).*6. Bitcoins will change the world unless governments ban them with harsh penalties.
  • The benefits of a currency like this:a) Your coins can’t be frozen (like a Paypal account can be)b) Your coins can’t be trackedc) Your coins can’t be taxedd) Transaction costs are extremely low (sorry credit card companies)
  • An individual with the name -- or perhaps handle -- of Satoshi Nakamoto first wrote about bitcoins in a paper called Bitcoin: A Peer-to-Peer Electronic Cash System.
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  • * We made this term up to describe the “good people” of the internet who believe in the fundamental rights of individuals to be free, have free speech, fight hypocrisy and stand behind logic, technology and science over religion, political structure and tradition. These are the people who build and support things like Wikileaks, Anonymous, Linux and Wikipedia. They think that people can, and should, govern themselves. They are against external forms of control such as DRM, laws that are bought and sold by lobbyists, and religions like Scientology. They include splinter groups that enforce these ideals in the form of hacktivism, such as the takedown of the Sony Playstation Network after Sony tried to prosecute a hacker for unlocking its console.
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    Sounds good!
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    wow it's frigthening! it's the dream of every anarchist, every drug, arm, human dealer! the world made as a global fiscal paradise... the idea is clever however it will not replace real money because 1 - no one will build a fortune on bitcoin if a technological breakthrough can ruin them 2 - government never allowed parallel money to flourish on their territory, so it will be almost impossible to change bitcoin against euros or dollars
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    interesting stuff anyone read cryptonomicon by neal stephenson? similar theme.
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    :) yes. One of the comments on reddit was precisely drawing the parallels with Neal Stephenson's Snowcrash / Diamond Age / Cryptonomicon. Interesting stuff indeed. It has a lot of potential for misuse, but also opens up new possibilities. We've discussed recently how emerging technologies will drive social change. Whether it's the likes of NSA / CIA who will benefit the most from the Twitters, Facebooks and so on, by gaining greater power for control, or whether individuals are being empowered to at least an identical degree. We saw last year VISA / PayPal censoring WikiLeaks... Well, here's a way for any individual to support such an organization, in a fully anonymous and uncontrollable way...
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    One of my colleagues has made a nice, short write-up about BitCoin: http://www.pds.ewi.tudelft.nl/~victor/bitcoin.html
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    very nice analysis indeed - thanks Tamas for sharing it!
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    mmm I'm not an expert but it seemed to me that, even if these criticisms are true, there is one fundamental difference between the money you exchange on internet via your bank, and bitcoins. The first one is virtual money and the second one aims at being real, physical, money, even if digital, in the same way as banknotes, coins, or gold.
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    An algorithm wanna-be central bank issuing untraceable tax free money between internet users? not more likely than the end of the world supposed to take place tomorrow, in my opinion. Algorithms don't usually assault women though !:P
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    well, most money is anyway just virtual and only based on expectations and trust ... (see e.g. http://en.wikipedia.org/wiki/Money_supply) and thus if people trust that this "money" has some value in the sense that they can get something of value to them in exchange, then not much more is needed it seems to me ...
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    @Leopold: ok let's use the rigth words then. Bitcoin aim at being a currency ("physical objects generally accepted as a medium of exchange" from wikipedia), different than the "demand deposit". In the article proposed by Tamas he compares what cannot be compared (currencies, demand deposits and their mean of exchange). The interesting question is wether one can create a digital currency which is too difficult to counterfeit. As far as I know, there is no existing digital currency except this bitcoins (and maybe the currencies from games as second life and others, but which are of limited use in real world).
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    well of course money is trust, and even more loans and credit and even more stock and bond markets. It all represents trust and expectations. However since the first banks 500 years ago and the first loans etc. etc., and as well the fact that bonds and currencies bring down whole countries (Greece lately), and are mainly controlled by large financial centres and (central) banks, banks have always been on the winning side no matter what and that isn't going to change easily. So if you are talking about these new currencies it would be a new era, not just a new currency. So should Greece convert its debt to bitcoins ;P ?
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    well, from 1936 to 1993 the central bank of france was owned by the state and was supposed to serve the general interest...
LeopoldS

Human Brain Project - Goals - 3 views

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    can we contribute in any way to this - or alternatively benefit from this research already now?
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    Watch out!! I read quite a lot about the contribution by EPFL (apparently coordinator) and their boss, Henry Markram. From what I read, this is not really science, but mainly a PR campaign. The main motor in this project is attracting a lot of money and the main aim to do so is promising a lot of stuff that nobody will be able to deliver. Accordingly, Markram is a very controversial person in the business...
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    Oups, sorry! Of course I meant, "the main MEAN to do so...", but the aim justifies the means. Well, that's exactly Markram's motto, I guess.
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    interesting info indeed ... I though still think that the overall goal of this project, even if too ambitious for the time being is interesting, no?
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    It's not about interesting or not, it's about serious science or not. Also the goal of a fortune-teller is interesting, isn't it? Any description of a good science project is too ambitious, that's normal and not necessarily PR. But personally I think there is a certain limit where a science project becomes a bad SciFi thriller. This one here is a dime novel, I think. But the too ambitious is not the only point I became very doubtful. I have seen quite a number of scientists and engineers from different fields; what I read about the character and attitude of this guy just hints towards the worst case scenario. It's presumptive evidence, I know...
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    that bad! wow ....
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    You know me, I'm the bullshitter... You remember Kurzweil and his Singularity-nonsense. In a way this was very similar. Though I think Kurzweil and Markram are very different characters (The Singularity essentially is a religion, I can't see anything like that in Markram's claims) they seem to share an important point: they are both complete nerds that apparently never spent a single thought on the limits of science (in its English meaning) in general nor of their particular research field in specific. One may find this excusable, I don't. But even then, they make claims that the nerdest nerd must know that they are completely unrealistic and thus I just have to assume that they claim their nonsense on purpose. The reason in Markram's case clearly seems to be money. But all this does not mean that these nerds cannot produce valuable results.
LeopoldS

Scavenging Free Green Power From Radio Waves | eWEEK Europe UK - 1 views

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    Duncan and Xurxo have a look at this - just discussed today :-)
LeopoldS

Gemasolar Concentrated Solar Power achieves key milestone - 24 hours of uninterrupted s... - 1 views

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    was always a bit sceptic about the molten salt technology but practise seems to show that it works just fine ...
LeopoldS

Shake, rattle and … power up? - MIT News Office - 0 views

  • Instead of taking a cantilever-based approach, the team went a slightly different route, engineering a microchip with a small bridge-like structure that’s anchored to the chip at both ends. The researchers deposited a single layer of PZT to the bridge, placing a small weight in the middle of it. The team then put the device through a series of vibration tests, and found it was able to respond not just at one specific frequency, but also at a wide range of other low frequencies. The researchers calculated that the device was able to generate 45 microwatts of power with just a single layer of PZT — an improvement of two orders of magnitude compared to current designs.
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    should we have another look at this type of technology?
Eduardo Martin Moraud

Forecasting Brain Science and its impact on technology - 3 views

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    For those sceptics about the use of neuroscience: A 20min talk (by a computer scientist!) about brain science and its use to build intelligent technology
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    so what does he sell? 22' without saying anything? Just "intelligence is prediction" - great but what are you gonna do mate?
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    I do not think his intention is to sell anything... Just to make people (from a non neuroscience background) aware that brain science will have an impact on technology. Also: I am a firm believer in that "prediction"defines intelligence, as he states, and that making machines that behave in such a way is the way to go :) (the talk is from 2003 btw :p)
LeopoldS

Focus Fusion Society: Developing an environmentally safe, clean, low cost, unlimited e... - 0 views

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    is this just another cold fusion crap or something we could have a closer look at .... still not clear to me ... anybody?
Joris _

DailyTech - NASA Releases iPhone App - 2 views

  • The U.S. space agency has worked more diligently the past few years to better interact with the public.
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    what about ESA?
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    have already sent it as a suggestion to our com department ... btw: installed the app and its really well done!!
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    God no, why give more taxpayers' money to the shittiest, greediest and most closed company out there??
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    why "more" ... do they get any taxpayers money? answer to your question: because its the most efficient (and coolest) platform to convey your message to a larger audience with relatively little effort ... btw: just ordered a time capsule for home :-)
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    I said "more" because we already gave them money in the form of Sophia and Atlas :) If we want to be consistent in promoting "open" efforts (open innovation, open source, open governance, etc.) we should avoid Apple like the plague. They are far far worse than Microsoft in terms of closedness, secrecy, shady market practices and vendor lock-in. Just google a bit and you will find lots of example of their behaviour.
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    cant' really argue about the Apple practices, although I ve read some things. I think the NASA app is more like a news feed and nothing more. But that online crowdsourcing game we had in mind, now that would be cool in a mobile version - new mobiles also have accelerometers nowadays
Francesco Biscani

DIRECT - Wikipedia, the free encyclopedia - 0 views

  • DIRECT is a proposed alternative Shuttle-Derived Launch Vehicle architecture supporting NASA's Vision for Space Exploration, which would replace the space agency's planned Ares I and Ares V rockets with a family of launch vehicles named "Jupiter."
  • DIRECT is advocated by a group of space enthusiasts that asserts it represents a broader team of dozens of NASA and space industry engineers who actively work on the proposal on an anonymous, volunteer basis in their spare time.
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    Just read about this, it looks like an interesting example of bottom-up innovation and self-organization.
LeopoldS

University Industry Series: Nestle and IBM - National Coun... - 0 views

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    just registered to this webseminar on open innovaiton .... could be fun ...
LeopoldS

NASA - Climate Simulation Computer Becomes More Powerful - 0 views

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    just to make Nina and Friederike envious ...
nikolas smyrlakis

How Twitter Will Change the Way We Live - TIME - 0 views

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    If you're looking for interesting articles or sites devoted to Kobe Bryant, you search Google. If you're looking for interesting comments from your extended social network about the three-pointer Kobe just made 30 seconds ago, you go to Twitter.
Nicolas Weiss

Why your brain just can't remember that word - life - 08 June 2009 - New Scientist - 0 views

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    they had seen the symbol b
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    this is for me..
LeopoldS

CREAX Analytics - 0 views

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    nice tool - just saw the demonstration - a bit expensive though in my view ....
Tobias Seidl

Hygromorphs: from pine cones to biomimetic bilayers - Interface - 0 views

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    This is about biological and technical hygromorphs, i.e. structures that change shape according to humidity. Next to pine cones, there is also a cool study on wheat awns which drill themselves into the soil just by daily variance of air humidity. Biomimetics would be passively controlled acutators or humidity driven valves in space station to open/close dehumidification devices.
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    Interesting, but only an abstract... do you have the full paper ?
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    Not yet. There is also some other nice mechanism of wheat awns and how they use changes in humidity to anchor in soil. Would maybe fit with the above mentioned work of oisin.
ESA ACT

Carrier Multiplication in InAs Nanocrystal Quantum Dots with an Onset Defined by the En... - 0 views

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    Carrier multiplication (CM) is a process in which absorption of a single photon produces not just one but multiple electron-hole pairs. This effect is a potential enabler of next-generation, high-efficiency photovoltaic and photocatalytic systems.
ESA ACT

Digital holographic microscopy reveals prey-induced changes in swimming behavior of pre... - 0 views

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    The study doesn't seem relevant to us - but the name of the method is just marvellous!
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