Skip to main content

Home/ Advanced Concepts Team/ Group items tagged trees

Rss Feed Group items tagged

jcunha

Trees Crumbling in the Wind - 2 views

  •  
    Interesting to see the size of the tree doesn't influence the amount of wind it can stand against. Of particular interest to know when you can have a tree falling in your house/car here in the Netherlands
LeopoldS

Make: Online : Beyond awesome: launching a Christmas tree - 3 views

  •  
    fantastic .... thanks Jürgen
  •  
    makes me wonder what is going to happen with the ESTEC christmas tree ;)
  •  
    Perfect parabola! I love the way the tree stung the earth with the star at the top :D
koskons

Evogeneao: The Tree of Life - 3 views

  •  
    Beautiful interactive tree of life
  •  
    A bit slow, but I finally could figure out the common ancestor of the nine-banded armadillo and the common ostrich!
Luís F. Simões

This Will Change Everything: Ideas That Will Shape the Future (The Edge Annual Question... - 3 views

  • WHAT WILL CHANGE EVERYTHING? "What game-changing scientific ideas and developments do you expect to live to see?"
  • That's the question John Brockman, editor of the Web site edge.org, posed to about 160 cutting-edge minds in his 11th annual Edge Question. As in years past, they responded with bold, often thrilling, sometimes chilling, answers.
  •  
    And here's the same thing, but in dead-trees format: http://www.amazon.com/This-Will-Change-Everything-Future/dp/0061899674 Anyone else thinks that the ACT should buy us all a copy as a Christmas present? :)
  •  
    you are the ACT!!!
ESA ACT

Mexican forest tests chance for life on Mars - 0 views

  •  
    Planting real trees on Mars.
johannessimon81

Lytro light field camera: post-focus on images and perspective shift - 0 views

  •  
    I think the image of the pine tree nicely illustrates both effects.
johannessimon81

Indications for Gamma Ray Burst in our Galaxy - 1 views

  •  
    Abstract: In the last 3000 yr, one significant and rapid increase in the concentration of 14C in tree rings was observed; it corresponds to a gamma-ray energy input of 7x10^24 erg at Earth within up to one year in AD 774/5 (Miyake et al. 2012).
jcunha

IBM Watson: The inside story of how the Jeopardy-winning supercomputer was born, and wh... - 0 views

  •  
    A nice read. IBM Watson wowed the tech industry with a 2011 win against two of television show Jeopardy greatest champions. Using something that seemed like a sort of tree search for me IBM DeepQA algorithm managed to ingest sparse data (clues), process it getting one answer, understand what that answer means and come up with the question that leads to that answer. Now, IBM tells us that the same system can tackle medical diagnosis and financial risk problems.
Lionel Jacques

Artificial energy harvesting tree - 1 views

shared by Lionel Jacques on 11 Jan 12 - Cached
LeopoldS liked it
  •  
    The idea has been around for already some time (2008) but I like it despite the challenges/trade-off: visible vs IR photovoltaics, black leaves would be better... Piezo + classical PV would already be great... Optimizing the leave shape & distribution for both wind and sun energy harvesting could be interesting...
Thijs Versloot

Role of data visualization in the scientific community @britishlibrary - 1 views

  •  
    In a new exhibition titled Beautiful Science: Picturing Data, Inspiring Insight [bl.uk], the British Library pays homage to the important role data visualization plays in the scientific process. The exhibition can be visited from 20 February until 26 May 2014, and contains works ranging from John Snow's plotting of the 1854 London cholera infections on a map to colourful depictions of the Tree of Life.
tvinko

Massively collaborative mathematics : Article : Nature - 28 views

  •  
    peer-to-peer theorem-proving
  • ...14 more comments...
  •  
    Or: mathematicians catch up with open-source software developers :)
  •  
    "Similar open-source techniques could be applied in fields such as [...] computer science, where the raw materials are informational and can be freely shared online." ... or we could reach the point, unthinkable only few years ago, of being able to exchange text messages in almost real time! OMG, think of the possibilities! Seriously, does the author even browse the internet?
  •  
    I do not agree with you F., you are citing out of context! Sharing messages does not make a collaboration, nor does a forum, .... You need a set of rules and a common objective. This is clearly observable in "some team", where these rules are lacking, making team work inexistent. The additional difficulties here are that it involves people that are almost strangers to each other, and the immateriality of the project. The support they are using (web, wiki) is only secondary. What they achieved is remarkable, disregarding the subject!
  •  
    I think we will just have to agree to disagree then :) Open source developers have been organizing themselves with emails since the early '90s, and most projects (e.g., the Linux kernel) still do not use anything else today. The Linux kernel mailing list gets around 400 messages per day, and they are managing just fine to scale as the number of contributors increases. I agree that what they achieved is remarkable, but it is more for "what" they achieved than "how". What they did does not remotely qualify as "massively" collaborative: again, many open source projects are managed collaboratively by thousands of people, and many of them are in the multi-million lines of code range. My personal opinion of why in the scientific world these open models are having so many difficulties is that the scientific community today is (globally, of course there are many exceptions) a closed, mostly conservative circle of people who are scared of changes. There is also the fact that the barrier of entry in a scientific community is very high, but I think that this should merely scale down the number of people involved and not change the community "qualitatively". I do not think that many research activities are so much more difficult than, e.g., writing an O(1) scheduler for an Operating System or writing a new balancing tree algorithm for efficiently storing files on a filesystem. Then there is the whole issue of scientific publishing, which, in its current form, is nothing more than a racket. No wonder traditional journals are scared to death by these open-science movements.
  •  
    here we go ... nice controversy! but maybe too many things mixed up together - open science journals vs traditional journals, conservatism of science community wrt programmers (to me one of the reasons for this might be the average age of both groups, which is probably more than 10 years apart ...) and then using emailing wrt other collaboration tools .... .... will have to look at the paper now more carefully ... (I am surprised to see no comment from José or Marek here :-)
  •  
    My point about your initial comment is that it is simplistic to infer that emails imply collaborative work. You actually use the word "organize", what does it mean indeed. In the case of Linux, what makes the project work is the rules they set and the management style (hierachy, meritocracy, review). Mailing is just a coordination mean. In collaborations and team work, it is about rules, not only about the technology you use to potentially collaborate. Otherwise, all projects would be successful, and we would noy learn management at school! They did not write they managed the colloboration exclusively because of wikipedia and emails (or other 2.0 technology)! You are missing the part that makes it successful and remarkable as a project. On his blog the guy put a list of 12 rules for this project. None are related to emails, wikipedia, forums ... because that would be lame and your comment would make sense. Following your argumentation, the tools would be sufficient for collaboration. In the ACT, we have plenty of tools, but no team work. QED
  •  
    the question on the ACT team work is one that is coming back continuously and it always so far has boiled down to the question of how much there need and should be a team project to which everybody inthe team contributes in his / her way or how much we should leave smaller, flexible teams within the team form and progress, more following a bottom-up initiative than imposing one from top-down. At this very moment, there are at least 4 to 5 teams with their own tools and mechanisms which are active and operating within the team. - but hey, if there is a real will for one larger project of the team to which all or most members want to contribute, lets go for it .... but in my view, it should be on a convince rather than oblige basis ...
  •  
    It is, though, indicative that some of the team member do not see all the collaboration and team work happening around them. We always leave the small and agile sub-teams to form and organize themselves spontaneously, but clearly this method leaves out some people (be it for their own personal attitude or be it for pure chance) For those cases which we could think to provide the possibility to participate in an alternative, more structured, team work where we actually manage the hierachy, meritocracy and perform the project review (to use Joris words).
  •  
    I am, and was, involved in "collaboration" but I can say from experience that we are mostly a sum of individuals. In the end, it is always one or two individuals doing the job, and other waiting. Sometimes even, some people don't do what they are supposed to do, so nothing happens ... this could not be defined as team work. Don't get me wrong, this is the dynamic of the team and I am OK with it ... in the end it is less work for me :) team = 3 members or more. I am personally not looking for a 15 member team work, and it is not what I meant. Anyway, this is not exactly the subject of the paper.
  •  
    My opinion about this is that a research team, like the ACT, is a group of _people_ and not only brains. What I mean is that people have feelings, hate, anger, envy, sympathy, love, etc about the others. Unfortunately(?), this could lead to situations, where, in theory, a group of brains could work together, but not the same group of people. As far as I am concerned, this happened many times during my ACT period. And this is happening now with me in Delft, where I have the chance to be in an even more international group than the ACT. I do efficient collaborations with those people who are "close" to me not only in scientific interest, but also in some private sense. And I have people around me who have interesting topics and they might need my help and knowledge, but somehow, it just does not work. Simply lack of sympathy. You know what I mean, don't you? About the article: there is nothing new, indeed. However, why it worked: only brains and not the people worked together on a very specific problem. Plus maybe they were motivated by the idea of e-collaboration. No revolution.
  •  
    Joris, maybe I made myself not clear enough, but my point was only tangentially related to the tools. Indeed, it is the original article mention of "development of new online tools" which prompted my reply about emails. Let me try to say it more clearly: my point is that what they accomplished is nothing new methodologically (i.e., online collaboration of a loosely knit group of people), it is something that has been done countless times before. Do you think that now that it is mathematicians who are doing it makes it somehow special or different? Personally, I don't. You should come over to some mailing lists of mathematical open-source software (e.g., SAGE, Pari, ...), there's plenty of online collaborative research going on there :) I also disagree that, as you say, "in the case of Linux, what makes the project work is the rules they set and the management style (hierachy, meritocracy, review)". First of all I think the main engine of any collaboration like this is the objective, i.e., wanting to get something done. Rules emerge from self-organization later on, and they may be completely different from project to project, ranging from almost anarchy to BDFL (benevolent dictator for life) style. Given this kind of variety that can be observed in open-source projects today, I am very skeptical that any kind of management rule can be said to be universal (and I am pretty sure that the overwhelming majority of project organizers never went to any "management school"). Then there is the social aspect that Tamas mentions above. From my personal experience, communities that put technical merit above everything else tend to remain very small and generally become irrelevant. The ability to work and collaborate with others is the main asset the a participant of a community can bring. I've seen many times on the Linux kernel mailing list contributions deemed "technically superior" being disregarded and not considered for inclusion in the kernel because it was clear that
  •  
    hey, just catched up the discussion. For me what is very new is mainly the framework where this collaborative (open) work is applied. I haven't seen this kind of working openly in any other field of academic research (except for the Boinc type project which are very different, because relying on non specialists for the work to be done). This raise several problems, and mainly the one of the credit, which has not really been solved as I read in the wiki (is an article is written, who writes it, what are the names on the paper). They chose to refer to the project, and not to the individual researchers, as a temporary solution... It is not so surprising for me that this type of work has been first done in the domain of mathematics. Perhaps I have an ideal view of this community but it seems that the result obtained is more important than who obtained it... In many areas of research this is not the case, and one reason is how the research is financed. To obtain money you need to have (scientific) credit, and to have credit you need to have papers with your name on it... so this model of research does not fit in my opinion with the way research is governed. Anyway we had a discussion on the Ariadnet on how to use it, and one idea was to do this kind of collaborative research; idea that was quickly abandoned...
  •  
    I don't really see much the problem with giving credit. It is not the first time a group of researchers collectively take credit for a result under a group umbrella, e.g., see Nicolas Bourbaki: http://en.wikipedia.org/wiki/Bourbaki Again, if the research process is completely transparent and publicly accessible there's no way to fake contributions or to give undue credit, and one could cite without problems a group paper in his/her CV, research grant application, etc.
  •  
    Well my point was more that it could be a problem with how the actual system works. Let say you want a grant or a position, then the jury will count the number of papers with you as a first author, and the other papers (at least in France)... and look at the impact factor of these journals. Then you would have to set up a rule for classifying the authors (endless and pointless discussions), and give an impact factor to the group...?
  •  
    it seems that i should visit you guys at estec... :-)
  •  
    urgently!! btw: we will have the ACT christmas dinner on the 9th in the evening ... are you coming?
Thijs Versloot

The physics of flying snakes - 1 views

  •  
    The researchers have created two-dimensional computer models of the flying snakes, but they've also done real-world simulations - using 3D printed components in water tunnels. Both show that snake-shaped objects would get a special aerodynamic pop should they tilt their bodies at 35 degrees as they drop from tree branches.
Thijs Versloot

Shrew with spine of steel - 0 views

  •  
    After exploring the shrews' swampy palm forests habitat, the researchers also have a new guess about why the spine evolved: They suggest that the creatures might wedge themselves between the trunk of a palm tree and the base of its leaves, then use the strength and flexion of their muscular spine to force open this crevice, revealing insect larvae-a food source that other animals can't access. However, no hero shrew has yet been observed busting its back for a snack.
pacome delva

You Are Now Free to Move About the Insect - ScienceNOW - 1 views

  • Researchers thought that flies chose their altitude based on optic flow, a phenomenon familiar to anyone who has ridden an airplane.
  • The team's observations, published online today in Current Biology, suggest that flies base their cruising altitude on horizontal edges and landmarks—such as table surfaces or tree tops—and not on how fast the ground is moving beneath them. The edge-tracking strategy may enable flies to keep tabs on possible landing spots.
  • This may be the general principle" for all flying insects, he says.
Francesco Biscani

Rooting for swarm intelligence in plants - 2 views

  •  
    Pretty nifty... we should look into this.
  •  
    the cited paper by Baluška et al (http://dx.doi.org/10.1016/j.tree.2010.09.003) is a 2 page summary on the view that roots display swarm intelligence. Nothing really new compared to what those same authors have been writing about, but nice compilation of recent references on the subject.
  •  
    Trolled :)
pacome delva

Malagasy Spiders Spin the World's Toughest Biological Material - ScienceNOW - 0 views

  • Like an engineer accounting for a skyscraper swaying in the wind, Madagascar's Darwin's bark spider (Caerostris darwini) spins enormous, river-spanning webs that stretch and contract as the trees to which they're anchored bend this way and that. A new study finds that this spider's silk is the toughest biomaterial yet discovered.
  • The spiders' colossal orb webs can span up to 2.8 square meters and are anchored by threads as long as 25 meters.
Luís F. Simões

Stepping Away From the Trees For a Look at the Forest | Science/AAAS - 1 views

  • An ingenious new tool triggers a cascade of new insights. In this special section, Science's news reporters and editors mark the end of the current decade by stepping back from weekly reporting to take a broader look at 10 insights that have changed science since the dawn of the new millennium.
  •  
    For a direct link to the 10 articles, showing their abstracts, go here.
Francesco Biscani

Why I don't care very much about tablets anymore - 5 views

  •  
    There it goes :)
  •  
    "So a new tablet will never be exciting the way that a new, luxury gel ink pen will be exciting" Man, I immediately felt like ordering some new luxury gel ink pens!
  •  
    like also this one: "Some of the really savvy new media efforts like Flipboard are exciting, but after the initial "wow" factor wears off, these apps mainly serve to remind me that there's already too much good stuff to read out there, and that my life is slipping away from me in an infinite stream of interesting bits about smart animals, dumb criminals, outrageous celebs, shiny objects, funny memes, scientific discoveries, economic developments, etc.. I invariably end up closing the app in a fit of guilt, and picking up one of the truly fantastic dead tree or Kindle books that I'm working my way through at the moment, so that I can actually exercise my brain (as opposed to simply wearing it out)."
LeopoldS

Tree identification a snap with mobile app - Technology & Science - CBC News - 1 views

  •  
    One more nice citizen scientist example as I try to find for space since some time. Any good ideas this mit inspire you to?
  • ...1 more comment...
  •  
    IF THERE IS A MUSHROOM IDENTIFICATION APP I BUY AN IPHONE IMMEDIATELY!!!
  •  
    why don't you programme one and get rich?
  •  
    Would love to but this requires *TIME* :-( Automatic image-based mushroom recognition... perhaps could do as a FP7 study... it may save lives actually!
1 - 20 of 32 Next ›
Showing 20 items per page