background preloader

Challenge Browser

Challenge Browser
The Tracking and Tracing Books Prize Competition seeks innovations to track books destined for early-grade classrooms and learning centers in low-income countries and allow stakeholders, ranging from parents to Ministries of Education and donor agencies, to quickly and easily access tracking information. There are three phases to this Prize Competition. The first phase requires a written description of the proposed innovation and the expertise and experience of the Solver. There is a prize pot of a least $20,000 for this phase. By submitting, you are providing ACR GCD with a non-exclusive license to use any information contained in your submission (excluding personal identifying information), irrespective of whether your submission receives an award. Read Challenge Details » Source: InnoCentive Challenge ID: 9933724 Related:  Science and Engineeringcollaboratif

How to Make a Metamaterial that Expands Under Pressure and Contracts In Tension Compress a material and it will deform in the direction of the applied force: in other words, it becomes squashed. Similarly, a material under tension will stretch. But what of the opposite idea, that a compressed material will stretch and substance under tension will become squashed? That’s impossible, right? The secret is based on network science and in particular how networks behave when they are changed in some way. Back in the 1960s, the German mathematician Dietrich Braess noticed that opening extra roads in a city can increase travel time rather than reduce it. It turns out that this effect occurs in many networks. The explanation comes from the new discipline of network science. Now Nicolaou and Motter have worked out how to use this idea to make materials that expand when compressed. A network with negative compressibility must be designed so that it there is an internal latent strain between the building blocks that constrains the overall shape.

Why The Collaborative Consumption Revolution Might Be As Significant As The Industrial Revolution (TCTV) Everything, it seems, is becoming collaborative. From Airbnb to RentCycle to Zipcar, we are swapping our cars, our homes, even our clothes with each other. According to Lauren Anderson from Collaborative Consumption, this change might be as profound as the industrial revolution. It will result, she told me when we met at Fast Company’s Innovative Uncensored event, in a world driven by “reputational capital” in which the “We” of the our collaborative age will replace the “Me” of the industrial age. While Anderson might be right, I’m not sure it’s such a great thing for people like myself who aren’t naturally participatory. Indeed, I find the whole idea of an always-on reputational economy a little creepy – especially since this may not be a world that is able to either forgot or forgive. So is Anderson right – is this shift from the Me to the We as significant as the industrial revolution?

OI Pratique - WE-Open Innovation Un entretien avec Anders Hjalmarsson du Viktoria Swedish ICT, Götegorg, Suède,auteur de “Beyond Innovation contest: a framework of barriers to open innovation of digital services” (Au-delà des concours d’innovation: une modélisation des obstacles à l’innovation ouverte dans les services numériques). Q: Bonjour Anders, je vous remercie d’avoir accepté notre invitation. Nous aimerions discuter des principales conclusions de vos travaux sur les « obstacles à l’innovation ouverte », travaux que vous avez présentés à la Conférence Européenne sur les systèmes d’Information le 9 Juin 2014. Pour commencer, pourriez-vous nous dire quelques mots sur vous-même, vos centres d’intérêt et domaines de recherche? R: Bien sûr, merci pour l’opportunité de cet entretien. Au Viktoria Swedish ICT notre recherche porte sur l’Open Innovation appliquée aux domaines des transports publics et à l’industrie automobile. Q: Ca semble être des applications très intéressantes! Q: Quelle méthodologie avez-vous suivie?

Asteroid 2012 DA14 will pass very close to Earth in 2013 A near-Earth asteroid swept safely past Earth on February 15, 2013, and astronomers in many parts of the world were ready with cameras and video equipment. At its closest to us, asteroid 2012 DA14 was within the orbit of the moon (which averages about a quarter million miles away), and closer than some high-orbiting communications satellites. Its closest point was about 17,200 miles (27,680 kilometers) away. The asteroid was not visible to the eye as it sped harmlessly past, but earthly cameras captured it, and millions watched online in real time. The image below is from Bareket Observatory in Israel, which had a live webcast of the asteroid passage on February 15. The video below that is also from Bareket. The data stream was enormous, with more than 150K viewers overall … We continued the webcast up to about 0300am local time, much longer than the initial schedule. February 15, 2013 passage of asteroid 2012 DA14 via Bareket Observatory in Israel. Video streaming by Ustream No. NEWS.

Resources From Share NY Read more about of Shareable's coverage of the topics explored during Share NY. Welcome & Orientation Cameron Tonkinwise, Ph.D, Chair, Design Thinking and Sustainability, Parsons, the New School of Design Milicent Johnson, Community Builder, Shareable Magazine Conversation 1: Share or Die, Youth in Recession – Moderated by Malcolm Harris Conversation 2: Pioneering a New Economy – Moderated by Neal Gorenflo, Editor, Shareable Magazine Caroline Woolard, Co-founder, OurGoods and Trade School Matthew Brimer, Founding Partner, General Assembly Lauren Anderson, collaborative consumption speaker, advocate and Innovation Director with The Collaborative Lab. Conversation 3: How are they doing it? Campbell McKeller, Founder, LooseCubes Danya Cheskis-Gold, Community Manager, Skillshare Erin Barns, Co-founder, Ioby Ron Williams, CEO and Co-founder, SnapGoods Marcos Salazar, Author, the Turbulent 20s Survival Guide, and Founder of Be Social Change Roadmap for Success

Osefrance.org - Page d’accueil Loop quantum gravity More precisely, space can be viewed as an extremely fine fabric or network "woven" of finite loops. These networks of loops are called spin networks. The evolution of a spin network over time is called a spin foam. Today LQG is a vast area of research, developing in several directions, which involves about 50 research groups worldwide.[1] They all share the basic physical assumptions and the mathematical description of quantum space. Research into the physical consequences of the theory is proceeding in several directions. History[edit] The canonical version of the dynamics was put on firm ground by Thomas Thiemann, who defined an anomaly-free Hamiltonian operator, showing the existence of a mathematically consistent background-independent theory. General covariance and background independence[edit] In theoretical physics, general covariance is the invariance of the form of physical laws under arbitrary differentiable coordinate transformations. LQG is formally background independent. .

Connecting through “Collaborative Consumption” In April of 2000, on the spur of the moment, Casey Fenton bought a cheap airplane ticket to Reykjavik, Iceland, for a long weekend. At the time, Fenton was 22 years old and had no place to stay in Reykjavik. Undeterred, Fenton searched the online student database at the University of Iceland, extracted names and email addresses of 1,500 students, and sent messages like “Hey Bjorn, I am coming to Iceland. Can I stay on your couch and hang out with you for the weekend?” Within 24 hours, he received 50 invitations saying, “Hang out with me.” Fenton had his pick of where and with whom he wanted to crash. CouchSurfing co-founder Casey Fenton. After that trip, Fenton decided he wanted to keep traveling this way. CouchSurfing is just one example of “collaborative consumption,” a rapid explosion in swapping, sharing, bartering, trading, and renting, facilitated by the latest online technologies and peer-to-peer marketplaces. But collaborative consumption is more than just a cost-saving ploy.

Related: