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Christos Ampatzis

ScienceDirect - Current Biology : The missing climate change policy - 2 views

www.sciencedirect.com/science

climate change

shared by Christos Ampatzis on 09 Mar 10 - No Cached
Nicholas Lan liked it
  • Christos Ampatzis on 09 Mar 10
     
    "Affluent western individuals are increasingly fretting about the carbon dioxide emissions from their lifestyle and energy use but one key issue, having fewer children, is little considered. " If sb has access to the article... Having fewer children as a solution to climate change makes me curious...
LeopoldS

pompeii, italy ruins - Google Maps - 2 views

maps.google.com/maps

gadget INF

shared by LeopoldS on 08 Dec 09 - Cached
  • LeopoldS on 08 Dec 09
     
    fantastic walk through Pompei!
Joris _

Earth's atmosphere came from outer space, find scientists - 3 views

www.physorg.com/news179676765.html

climate research space

shared by Joris _ on 11 Dec 09 - Cached
  • From that we now know that the volcanic gases could not have contributed in any significant way to the Earth's atmosphere
  • LeopoldS on 11 Dec 09
     
    tried to find the original science paper but could not .... the only one I found was this one: http://sciencenow.sciencemag.org/cgi/content/full/2009/1210/2
  • ...1 more comment...
  • Nina Nadine Ridder on 11 Dec 09
  • nikolas smyrlakis on 14 Dec 09
     
    "Plan 9 from outer space" quote confirmed : atmospheric conditions in outer space stall communications! Wonder how many more facts of the movie will prove right in the end...
  • pacome delva on 14 Dec 09
     
    very interesting study. Although it is not so much a surprise, they cite many papers on planetary formation that predicted this, and the only paper on degassing they cite is from our rather unpopular french ex-minister of research c. allegre, who refuses the fact that humans have an impact on climate...
pacome delva

Philosophers' Imprint - 5 views

quod.lib.umich.edu/...text-idx

philosophy phy math

shared by pacome delva on 18 Jan 10 - Cached
Nicholas Lan liked it
  • pacome delva on 18 Jan 10
     
    An interesting (free) journal on philosophy, with even some article with mathematics and physics !
  • Luzi Bergamin on 18 Jan 10
     
    Reading the titles somehow reminds me of the most important webpage of the ACT: the Advanced Concepts Generator :-)
  • pacome delva on 18 Jan 10
     
    have you seen the 2 articles on canonical GR ...!
Joris _

Hawking: Aliens are out there, likely to be Bad News * The Register - 3 views

www.theregister.co.uk/...hawking_aliens_warning

aliens

shared by Joris _ on 26 Apr 10 - Cached
  • Luzi Bergamin on 26 Apr 10
     
    I think it's time to quote "Calvin & Hobbes" (yes, I'm still the guy who knows a C&H for any situation in life) "Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us." One should sue this idiot for racism against extraterrestrials!!
Isabelle DB

Global Warning - a project of the National Security Journalism Initiative - 0 views

global-warning.org/main

Arctic Climate Change Global Warming and Security Environment Energy Youth Students Water Military

shared by Isabelle DB on 12 Jan 11 - No Cached
  • Isabelle DB on 12 Jan 11
     
    "WASHINGTON, D.C. - In a three-month investigation, a team of Northwestern University student reporters has found that the US nation's security establishment is not adequately prepared for many of the environmental changes that are coming faster than predicted and that threaten to reshape demands made on the military and intelligence community. This is despite the fact that the Defense Department has called climate change a potential "accelerant of instability." The Medill School of Journalism graduate student team began publication on January 10 of its findings on the national security implications of climate change with a series of print, video and interactive stories."
Isabelle DB

Laser light and the nematode C. elegans - 2 views

colbert.physics.harvard.edu/videos.php

bio phy

shared by Isabelle DB on 10 Mar 11 - No Cached
  • Isabelle DB on 10 Mar 11
     
    Controlling Locomotion and Behavior in Real-Time
Luís F. Simões

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

launch.is/...dangerous-project-weve-ev.html

bitcoin p2p money disruptive

shared by Luís F. Simões on 16 May 11 - No Cached
LeopoldS liked it
  • 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.
  • ...1 more annotation...
  • * 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.
  • Ma Ru on 17 May 11
     
    Sounds good!
  • ...9 more comments...
  • pacome delva on 18 May 11
     
    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
  • Nicholas Lan on 18 May 11
     
    interesting stuff anyone read cryptonomicon by neal stephenson? similar theme.
  • Luís F. Simões on 18 May 11
     
    :) 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...
  • tvinko on 18 May 11
     
    One of my colleagues has made a nice, short write-up about BitCoin: http://www.pds.ewi.tudelft.nl/~victor/bitcoin.html
  • LeopoldS on 18 May 11
     
    very nice analysis indeed - thanks Tamas for sharing it!
  • pacome delva on 20 May 11
     
    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.
  • nikolas smyrlakis on 20 May 11
     
    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
  • LeopoldS on 21 May 11
     
    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 ...
  • pacome delva on 23 May 11
     
    @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).
  • nikolas smyrlakis on 23 May 11
     
    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 ?
  • pacome delva on 23 May 11
     
    well, from 1936 to 1993 the central bank of france was owned by the state and was supposed to serve the general interest...
Lionel Jacques

» Kamikaze Satellite Could Be Earth's Last Defense Against Asteroid - 5 views

www.wired.com/...divert-asteroid-apophis

space

shared by Lionel Jacques on 24 Aug 11 - No Cached
  • Lionel Jacques on 24 Aug 11
     
    Does ESA really want to sent 2 S/C to this rock ?
  • ...1 more comment...
  • Luís F. Simões on 24 Aug 11
  • Joris _ on 26 Aug 11
     
    Isn't there a bit of confusion there - Don Quijote will actually not fly, is it? Isn't it just an old buzz that has been misquoted...
  • LeopoldS on 27 Aug 11
     
    indeed the article is a bit too upbeat - DQ is a concept and brain child of Andrés! and chances are indeed good that ESA will do something on NEO missions, if it will be don quijote, nobody knows of course ... but in my view it's a nice concept ...
santecarloni

[1108.4767] Capturing Near Earth Objects - 3 views

arxiv.org/1108.4767

asteroids space science

shared by santecarloni on 30 Aug 11 - No Cached
  • santecarloni on 30 Aug 11
     
    I sit really possible/desirable?
  • Joris _ on 30 Aug 11
     
    It is possible, and NEOs may offer interesting ressources, but there is nothing in that paper. Why do they use the Sun-Earth system and not the Earth-Moon? The condition C>C1 is very weak and would have been much better had it been applied to the Earth-Moon system.
Francesco Biscani

iTWire - London Stock Exchange gets the facts and dumps Windows for Linux - 1 views

www.itwire.com/...1141

inf

shared by Francesco Biscani on 12 Oct 09 - Cached
  • Microsoft’s marketing arm excitedly churned out a case study in 2005 when the London Stock Exchange (LSE) rolled out a C# stock exchange ticker system on Windows Server 2003 and SQL Server 2000. Four years later the LSE has scrapped the whole system in favour of a Linux-based solution instead.
  • Francesco Biscani on 12 Oct 09
     
    Microsoft "Gets the facts".
pacome delva

Physics - Nanospheres on a silver plate - 0 views

physics.aps.org/64

phy nan nanoparticle

shared by pacome delva on 05 Aug 09 - Cached
  • As a result of its high symmetry and conjugated bond structure, the electronic properties of C60 are very unusual, and there is a massive research effort toward integrating it into molecular scale electronic devices [4].
  • In this context, it is important to understand how the molecule forms bonds with a metal substrate, such as silver, which is commonly used as an electrode material.
  • The general trend in all of these cases shows that even molecules with relatively weak individual (atom-to-atom) surface bonds can induce substantial substrate reconstructions in order to create favorable adsorption sites [8]. Such “nanopatterning” of substrates is essential to the stability of ordered structures of these molecules and can critically influence their electronic structure, which is an important aspect in the design of molecular electronic devices.
Joris _

Backup plan to get NASA to moon cheaper - 0 views

www.sfgate.com/...article.cgi

MAD nasa moon

shared by Joris _ on 06 Jul 09 - Cached
  • I would like us to be in the lunar business
  • Joris _ on 06 Jul 09
     
    They want so much to reduce the price of the program that they forgot that the ultimate goal is Mars ... cos' this would not be a technology demonstration anymore ... am I wrong ?
Tobias Seidl

Plagiarism: Consider the Context -- Roig 325 (5942): 813 -- Science - 0 views

www.sciencemag.org/...813-c

Plagiarism

shared by Tobias Seidl on 14 Aug 09 - Cached
  • Practices such as patchwriting and authors' recycling of their previously published text should not just be regarded as questionable—they should be unequivocally classified as inappropriate scholarship
Joris _

Report: Planets will collide in 5 billion years - 0 views

www.sfgate.com/...article.cgi

astrodynamic space planets

shared by Joris _ on 11 Jun 09 - No Cached
  • Mercury, Mars, Venus and Earth to smash into each other, either one at a time or all at once
  • by the end of that same 5 billion years the sun will have burned up its hydrogen and in a cooler state will inflate itself
  • the great "gas giants" of the outer solar system - Jupiter, Saturn, Uranus and Neptune - are extremely stable in their orbits, so they could remain where they are for a much longer time
  • Joris _ on 11 Jun 09
     
    Interesting, but obviously something is wrong. How the big giants can remain still if the inner planets and the sun vanish at the same time !
ESA ACT

Materials Today : The top ten advances in materials science - 0 views

www.sciencedirect.com/science

NAN technology materials

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    What are the defining discoveries, moments of inspiration, or shifts in understanding that have shaped the dynamic field of materials science we know today. Here's what we think are the most significant.
ESA ACT

Towards Physarum Robots: Computing and Manipulating on Water Surface - 0 views

www.sciencedirect.com/science

paper bio robotics

shared by ESA ACT on 24 Apr 09 - Cached
  • ESA ACT on 24 Apr 09
     
    Behavioural analysis of computation capabilities of amoeba.
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