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Athanasia Nikolaou

Study finds link between the atmospheric rivers and climate - 1 views

www.nasa.gov/...earth20131108.html

PHY climate atmospheric rivers oscillations

shared by Athanasia Nikolaou on 08 Nov 13 - No Cached
  • Athanasia Nikolaou on 08 Nov 13
     
    Atmospheric rivers, short-lived wind tunnels are created in the upper troposphere and carry vast amounts of water. They 'fuel' from the tropical Pacific reservoir and cause heavy precipitation events and even floods to mid-latitude land, as soon as they encounter the Sierra mountains. The new finding is that two inter-hemispheric climatic oscillation modes allow for their creation, as soon as they are found in a certain phase combination.
  • Paul N on 13 Nov 13
     
    Could we conceivably control these like we're thinking to do with taifuns? :)) Would be geoengineering at its finest
Paul N

Hacking Team Breach Shows a Global Spying Firm Run Amok | WIRED - 1 views

www.wired.com/...ws-global-spying-firm-run-amok

shared by Paul N on 08 Jul 15 - No Cached
LeopoldS liked it
  • Paul N on 08 Jul 15
     
    Few news events can unleash more schadenfreude within the security community than watching a notorious firm of hackers-for-hire become a hack target themselves. In the case of the freshly disemboweled Italian surveillance firm Hacking Team, the company may also serve as a dark example of a global surveillance industry that often sells to any government willing to pay, with little regard for that regime's human rights record. Scroll down for the commercial. :)) Funny that when I keep complaining about privacy and monitoring, people still point and laugh.
  • Alexander Wittig on 09 Jul 15
     
    And the direct link to the whole stash: https://ht.transparencytoolkit.org/ Their admin kept a plain text file with passwords on his desktop. Maybe they should have hired someone to do an audit :) More importantly, from the files it follows that this company found and exploited yet another vulnerability in Flash. So the current round of plugin/browser updates is thanks to this hack :)
  • Paul N on 09 Jul 15
     
    The vulnerability only seemed to affect some of the more recent versions. Maybe from time to time we should downgrade flash to avoid them :))
Juxi Leitner

Robots to the Rescue!: JPL's RoboSimian and Surrogate Robots are here to Help - 3 views

www.jpl.nasa.gov/...lectures_archive.php

ai technology science robotics

shared by Juxi Leitner on 30 Jul 15 - No Cached
  • Juxi Leitner on 30 Jul 15
     
    Robots to the Rescue!: JPL's RoboSimian and Surrogate Robots are here to Help
  • Thijs Versloot on 31 Jul 15
     
    Also many other interesting videos of the Karman Lectures
Luzi Bergamin

You know you have been in Finland too long, when... - 4 views

www.hs.fi/toolong

fun humor

shared by Luzi Bergamin on 23 Jun 10 - Cached
  • Luzi Bergamin on 23 Jun 10
     
    How you know you have been to long in xy. The Finnish version. My favorite is 33. You accept that 80°C in a sauna is chilly, but 20°C outside is freaking hot. Quite a lot of them are outdated, esp. about opening hours of shops, and one is definitely missing. Your normal mealtime has shifted to 11am for lunch and 5pm for dinner. But don't worry, it's a really comfy place here, isnt' it Jose??
  • ...4 more comments...
  • Juxi Leitner on 23 Jun 10
     
    well somethings you get used to in a year (like salmiakki or koskenkorva) others don't (seriously, lunch at 11?!?!)
  • Ma Ru on 23 Jun 10
     
    But what stage are you in already, Luzi?
  • Luzi Bergamin on 24 Jun 10
     
    I would say a 50% Finn. I do have lunch at 11am, every working day, an 80 degrees sauna indeed is just a warm room. But I will never get used to salmiakki (which is just literally eating a cleaning agent!!) and you can imagine that "silence is fun" is not really MY motto...
  • LeopoldS on 24 Jun 10
     
    True?? 22. You understand why the Finnish language has no future tense. No, I don't think I ever will understand that one... Finns are quite future-oriented at two particular times of the year. On the day after Midsummer (see above), they say "Well, it's all downhill from now on" and prepare feverishly for winter, and similarly after December 21st they perk up and start thinking about Midsummer - ignoring the fact that they still have to get through January, February and March before the place becomes inhabitable again...
  • Juxi Leitner on 24 Jun 10
     
    ... Finnish language has no future tense. That's true
  • LeopoldS on 25 Jun 10
     
    everything expressed with "tomorrow I go to " or "in one year" etc? what about the distinction between to future events, one conditional on the other?
Juxi Leitner

Mission Idea Contest - 3 views

www.axelspace.com/...index.html

mission mad fun science space prizes

shared by Juxi Leitner on 05 Jul 10 - Cached
LeopoldS and Joris _ liked it
  • Juxi Leitner on 05 Jul 10
     
    so any ideas from us here?! :)
  • ...1 more comment...
  • LeopoldS on 05 Jul 10
     
    fantastic - they launched it! he mentioned this already some time ago ... I really like it.
  • LeopoldS on 05 Jul 10
     
    btw: have been discussing something similar with Roger ... a bit less ambitious but still ...
  • Juxi Leitner on 06 Jul 10
     
    presentations from the related nanosatellite event http://www.nestra.jp/NS_sympo/information_e.html (DLR, SSTL and european unis were there but no ESA...)
pacome delva

A Puzzling Collapse of Earth's Upper Atmosphere - 1 views

science.nasa.gov/...15jul_thermosphere

phy atmosphere solar_forecast

shared by pacome delva on 22 Jul 10 - Cached
LeopoldS liked it
  • NASA-funded researchers are monitoring a big event in our planet's atmosphere. High above Earth's surface where the atmosphere meets space, a rarefied layer of gas called "the thermosphere" recently collapsed and now is rebounding again.
  • pacome delva on 22 Jul 10
     
    Wow, this is a bit frigthening. Another proof that we understand very little about our atmosphere !!!
  • LeopoldS on 22 Jul 10
     
    very interesting indeed!
Juxi Leitner

UK Space Agency - UK Space Agency to launch Britain's first CubeSat - 2 views

www.ukspaceagency.bis.gov.uk/News and Events/News/19128.aspx

cubesat uk technology payload competition

shared by Juxi Leitner on 21 Jul 10 - No Cached
  • pacome delva on 21 Jul 10
     
    haha, seems super small !!!
LeopoldS

Future | Timeline | Technology | Predictions | Events | 2010 | 2012 | 2015 | 2020 | 205... - 5 views

www.futuretimeline.net/...2010-2019.htm

BIO technology phy space science fun

shared by LeopoldS on 08 Nov 10 - Cached
  • LeopoldS on 08 Nov 10
     
    nice source of inspiration ....
santecarloni

Space-time cloak could hide events : Nature News - 3 views

www.nature.com/...news.2010.611.html

phy cloak space-time

shared by santecarloni on 19 Nov 10 - No Cached
LeopoldS liked it
  • santecarloni on 19 Nov 10
     
    I think they are taking it a bit too far....
  • ...1 more comment...
  • Luzi Bergamin on 19 Nov 10
     
    I'm a little bit surprised as well about the crude story of the burglar, pure nonsense, of course! But the paper is deadly serious, Alberto and Paul are my best collaborators in metamaterials and optics, they are not this type of TV-show scientists as Leonhardt etc. But as Alberto told me: just put the name "cloak" in the title and you're in all the news. It's not science, it's kindergarden :-(.
  • LeopoldS on 20 Nov 10
     
    is my memory wrong or isn't this what you have already mentioned as theoretically possible a few years back when discussing this, Luzi?
  • Luzi Bergamin on 21 Nov 10
     
    Very well possible that I mentioned this. In fact I was one of the first who took spacetime transformations in transformation optics seriously. But first, my name is not Leonhardt and I don't work at Imperial, that's why nobody cites me and second I most probably found the idea too stupid to be published. You see the two reasons why I'm not successful in science...
Joris _

Japan probe overshoots Venus, heads toward sun - 0 views

www.washingtonpost.com/...AR2010120701077.html

MAD venus robust

shared by Joris _ on 08 Dec 10 - No Cached
sreejanag liked it
  • A Japanese probe to Venus failed to reach orbit Wednesday and was captured by the sun's gravitational pull
  • Akatsuki's engines did not fire long enough to attain the proper orbiting position
  • may be able to try again when it passes by Venus six years from now.
  • Joris _ on 08 Dec 10
     
    The usefulness of having a robust trajectory :) ... They have to wait 6 more years for another date with Venus ...
  • ...2 more comments...
  • Joris _ on 09 Dec 10
  • LeopoldS on 11 Dec 10
     
    I agree in general but just out of the stomach: is there really an optimised trajectory that would be able to avoid this kind of scenarios when main thrusters don't perform properly? Wouldn't you in any case end up in a sun-orbiting trajectory and have to come back after years??
  • Joris _ on 11 Dec 10
     
    "optimised trajectory" of course not, robust definitely! It was the subject of my paper presented at the AAS (the one in San Diego) "Designing robust interplanetary trajectories subject to one temporary engine failure". The problem here is that they do not have enough fuel for a correction maneuver that would allow to come back to Venus earlier, and break for a VOI. A robust scenario could have alloted the best amount of fuel and time to be able to recover from almost all possible unplanned events. In the paper, I introduce some confidence regions such that I get the robust control for p% chance of mission success in case m% chance of problem with the propulsion system.
  • Dario Izzo on 12 Dec 10
     
    You should run your method on this scenario and see if you could get a trajectory with a shorter come back time using the same spacecraft.... would be a big selling point for a new trajectory design approach
nikolas smyrlakis

mentored by the Advanced Concepts Team for Google Summer of Code 2010 - 4 views

socghop.appspot.com/...advancedconceptsteam

pagmo google summerofcode

shared by nikolas smyrlakis on 19 Mar 10 - Cached
LeopoldS liked it
  • nikolas smyrlakis on 19 Mar 10
     
    you propably already know,I post it for the twitter account and for your comments
  • ...4 more comments...
  • LeopoldS on 20 Mar 10
     
    once again one of these initiatives that came up from a situation and that would never have been possible with a top-down approach .... fantastic! and as Dario said: we are apparently where NASA still has to go with this :-)
  • Joris _ on 20 Mar 10
     
    Actually, NASA Ames did that already within the NASA Open Source Agreement in 2008 for a V&V software!
  • Joris _ on 20 Mar 10
  • LeopoldS on 20 Mar 10
     
    indeed ... you are right .... interesting project btw - they started in 1999, were in 2005 the first NASA project on Sourceforge and won several awards .... then this entry why they did not participate last year: "05/01/09: Skipping this years Google Summer-of-Code - many of you have asked why we are not participating in this years Summer of Code. The answer is that both John and Peter were too busy with other assignments to set this up in time. We will be back in 2010. At least we were able to compensate with a limited number of NASA internships to continue some of last years projects." .... but I could not find them in this years selected list - any clue?
  • LeopoldS on 20 Mar 10
     
    but in any case, according to the apple guru, Java is a dying technology, so their project might as well ...
  • Joris _ on 21 Mar 10
     
    They participate under the name "The Java Pathfinder Team" (http://babelfish.arc.nasa.gov/trac/jpf/wiki/events/soc2010). It is actually a very useful project for both education and industry (Airbus created a consortium on model checking soft, and there is a lot of research on it) As far as I know, TAS had some plans of using Java onboard spacecrafts, 2 years ago. Not sure the industry is really sensible about Jobs' opinions ;) particularly if there is no better alternative!
Juxi Leitner

Open Source Satellite Initiative | machine project - 3 views

machineproject.com/...satellite

education tech outreach satellites DIY

shared by Juxi Leitner on 20 May 10 - Cached
LeopoldS liked it
  • Juxi Leitner on 20 May 10
     
    All the satellite-related systems (except for the rocket to launch it) are DIY programs -- designed so that regular people may also have the chance of developing and eventually launching their own.
  • ...2 more comments...
  • Joris _ on 20 May 10
     
    The book is actually funny to read ... but this is not serious! Is it ?
  • Juxi Leitner on 20 May 10
  • Joris _ on 20 May 10
     
    I was saying that mainly because of some flaws - the piggy-pack installation, no dedicated stage, the limited control, ... It is so far very funny, but once he can fill all the gaps, it should be an excellent initiative - although careful about the debris if anyone has its own ;p
  • LeopoldS on 26 May 10
     
    his quote: "when art becomes practical, we call it technology; when technology becomes useless, we call it art" ... this is probably the later one ....
Dario Izzo

Google's 8-Point Plan to Help Managers Improve - 7 views

www.nytimes.com/...13hire.html

CMS INF

shared by Dario Izzo on 16 Mar 11 - No Cached
LeopoldS liked it
  • Dario Izzo on 16 Mar 11
     
    Well, well, Google says it. And all is a result of an algorithm..... Among the interesting fincings the algorithm says that technical competence of the boss is not needed..... against their own beliefs!!
  • ...3 more comments...
  • LeopoldS on 16 Mar 11
     
    "Although people are always looking for the next new thing in leadership," he said, "Google's data suggest that not much has changed in terms of what makes for an effective leader."
  • nikolas smyrlakis on 16 Mar 11
     
    "Managers often want to hire people who seem just like them" does the ACT look like the managers or the managers like the ACT ? hmmm
  • Ma Ru on 16 Mar 11
     
    "the topic often feels a bit like golf" What other comparison can one use in an article aimed towards managers? :D
  • LeopoldS on 17 Mar 11
     
    nobody in the ACT plays golf yet as far as I know ...
  • Ma Ru on 17 Mar 11
     
    Which is a pity as you have a golf field not that far away :-D Maybe a good idea for a nice team building event??
Luís F. Simões

Shell energy scenarios to 2050 - 6 views

www.shell.com/...shell_energy_scenarios_2050

energy future forecast politics economy climate_change

shared by Luís F. Simões on 09 Mar 11 - No Cached
  • Luís F. Simões on 09 Mar 11
     
    just in case you were feeling happy and optimistic
  • ...7 more comments...
  • Francesco Biscani on 09 Mar 11
     
    An energy scenario published by an oil company? Allow me to be sceptical...
  • Joris _ on 10 Mar 11
     
    Indeed, Shell is an energy company, not just oil, for some time now ... The two scenarii are, in their approach, dependant of economic and political situation, which is right now impossible to forecast. Reference to Kyoto is surprising, almost out-dated! But overall, I find it rather optimistic at some stages, and probably the timeline (p37-39) is unlikely with recent events.
  • Luís F. Simões on 10 Mar 11
     
    the report was published in 2008, which explains the reference to Kyoto, as the follow-up to it was much more uncertain at that point. The Blueprint scenario is indeed optimistic, but also quite unlikely I'd say. I don't see humanity suddenly becoming so wise and coordinated. Sadly, I see something closer to the Scramble scenario as much more likely to occur.
  • LeopoldS on 12 Mar 11
     
    not an oil company??? please have a look at the percentage of their revenues coming from oil and gas and then compare this with all their other energy activities together and you will see very quickly that it is only window dressing ... they are an oil and gas company ... and nothing more
  • Joris _ on 14 Mar 11
     
    not JUST oil. From a description: "Shell is a global group of energy and petrochemical companies." Of course revenues coming from oil are the biggest, the investment turnover on other energy sources is small for now. Knowing that most of their revenues is from an expendable source, to guarantee their future, they invest elsewhere. They have invested >1b$ in renewable energy, including biofuels. They had the largest wind power business among so-called "oil" companies. Oil only defines what they do "best". As a comparison, some time ago, Apple were selling only computers and now they sell phones. But I would not say Apple is just a phone company.
  • LeopoldS on 14 Mar 11
     
    window dressing only ... e.g. Net cash from operating activities (pre-tax) in 2008: 70 Billion$ net income in 2008: 26 Billion revenues in 2008: 88 Billion Their investments and revenues in renewables don't even show up in their annual financial reports since probably they are under the heading of "marketing" which is already 1.7 Billion $ ... this is what they report on their investments: Capital investment, portfolio actions and business development Capital investment in 2009 was $24 billion. This represents a 26% decrease from 2008, which included over $8 billion in acquisitions, primarily relating to Duvernay Oil Corp. Capital investment included exploration expenditure of $4.5 billion (2008: $11.0 billion). In Abu Dhabi, Shell signed an agreement with Abu Dhabi National Oil Company to extend the GASCO joint venture for a further 20 years. In Australia, Shell and its partners took the final investment decision (FID) for the Gorgon LNG project (Shell share 25%). Gorgon will supply global gas markets to at least 2050, with a capacity of 15 million tonnes (100% basis) of LNG per year and a major carbon capture and storage scheme. Shell has announced a front-end engineering and design study for a floating LNG (FLNG) project, with the potential to deploy these facilities at the Prelude offshore gas discovery in Australia (Shell share 100%). In Australia, Shell confirmed that it has accepted Woodside Petroleum Ltd.'s entitlement offer of new shares at a total cost of $0.8 billion, maintaining its 34.27% share in the company; $0.4 billion was paid in 2009 with the remainder paid in 2010. In Bolivia and Brazil, Shell sold its share in a gas pipeline and in a thermoelectric power plant and its related assets for a total of around $100 million. In Canada, the Government of Alberta and the national government jointly announced their intent to contribute $0.8 billion of funding towards the Quest carbon capture and sequestration project. Quest, which is at the f
  • Joris _ on 14 Mar 11
     
    thanks for the info :) They still have their 50% share in the wind farm in Noordzee (you can see it from ESTEC on a clear day). Look for Shell International Renewables, other subsidiaries and joint-ventures. I guess, the report is about the oil branch. http://sustainabilityreport.shell.com/2009/servicepages/downloads/files/all_shell_sr09.pdf http://www.noordzeewind.nl/
  • LeopoldS on 16 Mar 11
     
    no - its about Shell globally - all Shell .. these participations are just peanuts please read the intro of the CEO in the pdf you linked to: he does not even mention renewables! their entire sustainability strategy is about oil and gas - just making it (look) nicer and environmentally friendlier
  • Joris _ on 16 Mar 11
     
    Fair enough, for me even peanuts are worthy and I am not able to judge. Not all big-profit companies, like Shell, are evil :( Look in the pdf what is in the upstream and downstream you mentionned above. Non-shell sources for examples and more objectivity: http://www.nuon.com/company/Innovative-projects/noordzeewind.jsp http://www.e-energymarket.com/news/single-news/article/ferrari-tops-bahrain-gp-using-shell-biofuel.html thanks.
LeopoldS

interesting use of the AR Drone - 0 views

www.usenix.org/...Reed.pdf

drone INF

shared by LeopoldS on 11 Sep 11 - No Cached
  • LeopoldS on 11 Sep 11
     
    Guido have a look at this one ....
Nina Nadine Ridder

AEI - Geoengineering: A Revolutionary Approach to Climate Change - 0 views

www.aei.org/1728

Geoengineering

shared by Nina Nadine Ridder on 09 Sep 09 - No Cached
  • Nina Nadine Ridder on 09 Sep 09
     
    video of presentation and discussion about scienctific background of geoengineering in course of the series of AEI conferences
LeopoldS

IBM Virtual Events for Smart Work Launch - 0 views

www-01.ibm.com/...virtual

INF innovation

shared by LeopoldS on 21 Sep 09 - Cached
  • LeopoldS on 21 Sep 09
     
    anybody interested in joining?
nikolas smyrlakis

Future Of Web Apps - London 2009 - 0 views

events.carsonified.com/...london

2009 web apps future

shared by nikolas smyrlakis on 20 May 09 - Cached
  • nikolas smyrlakis on 20 May 09
     
    rather interesting "conf."
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