How unique are your usernames? Usernames are ubiquitous on the Internet. Almost every web site uses them to identify its users and, by design, they are unique within each service. In web services that have millions or hundreds of millions of users, it might become difficult to find a username that has not already been taken. For instance, you might have experienced that a specific username you wanted was already taken. This phenomenon drives users to choose increasingly complex and unique usernames. Our experiments show that most usernames constitute extremely identifying pieces of information. Type your username (for example “zorro1982″ or “dan.perito”) to discover how unique it is. Alternatively, try typing two usernames separated by a space. Paper How unique and traceable are usernames?
Sloodle - 3D Learning Management System Domain Name Generator Greenbush Edusim La e-réputation expliquée par la pyramide de Maslow - La E-réputation par Norolanto RAZAFINIMANANA La pyramide des besoins schématise une théorie élaborée à partir des observations réalisées dans les années 1940 par le psychologue Abraham Maslow sur la motivation. Nous recherchons d'abord, selon Maslow, à satisfaire chaque besoin d'un niveau donné avant de penser aux besoins situés au niveau immédiatement supérieur de la pyramide. A l'origine, Maslow avait une vision dynamique de cette hiérarchie des besoins, cette représentation pyramidale s'est imposée dans le domaine de la psychologie du travail par commodité. Besoins physiologiques / de Survie On nomme besoins physiologiques ceux nécessaires à la survie de la personne, ils sont impérieux (boire, manger, dormir, se réchauffer, ...) et peuvent l'emporter sur la conscience s'ils ne sont pas satisfaits. Besoins de sécurité On nomme besoins de sécurité ceux qui sont liés à l'aspiration de chacun d'entre nous à être assuré du lendemain physiquement comme moralement. Besoins d'appartenance / d'amour Besoins d'estime Besoins de Survie
Best Science Visualization Videos of 2009 Some of the most impressive images in science are produced when researchers take numerical data and represent it visually through modeling and computer graphics. The Department of Energy honored 10 of this year’s best scientific visualizations with its annual SciDAC Vis Night awards, at the Scientific Discovery through Advanced Computing conference (SciDAC) in June. Researchers submitted visualizations to the contest, and program participants voted on the best of the best. (We’ve adapted the captions from the SciDAC Vis Night blurbs.) Above: The Big One This visualization illustrates some of the rupture and wave propagation phenomena of a magnitude 7.8 earthquake on the San Andreas fault in Southern California. Video: DOE SciDAC Program/Amit Chourasia, Kim Olsen, Steven Day, Luis Dalguer, Yifeng Cui, Jing Zhu, David Okaya, Phil Maechling and Thomas H. Below: Impact of a Copper Bullet on 6 Layers of Harness Satin Weave Kevlar Fabric(video not available) Pages: 1 23456789View All
The Conversation Prism by Brian Solis and JESS3 Second Life Best Practices in Education Conference 2007 Health | Internet use 'good for the brain' For middle-aged and older people at least, using the internet helps boost brain power, research suggests. A University of California Los Angeles team found searching the web stimulated centres in the brain that controlled decision-making and complex reasoning. The researchers say this might even help to counteract the age-related physiological changes that cause the brain to slow down. The study features in the American Journal of Geriatric Psychiatry. As the brain ages, a number of changes occur, including shrinkage and reductions in cell activity, which can affect performance. It has long been thought that activities which keep the brain active, such as crossword puzzles, may help minimise that impact - and the latest study suggests that surfing the web can be added to the list. Lead researcher Professor Gary Small said: "The study results are encouraging, that emerging computerised technologies may have physiological effects and potential benefits for middle-aged and older adults.
Nice titles - URL rollovers - link to ignore Nate over at webgraphics talks about a new feature he'd like to see in Safari: that titles on links should be shown in the rather pretty way that Safari currently shows dragged links: That's rather nice, that. Updates Brad Choate sent some changes to make the positioning work correctly when a title's element is in something absolutely positioned, and to handle <ins> elements.Peter Janes fixed nicetitles so that they work in XHTML.This code is released under the MIT licence.A fix to stop titles remaining on the page when you open a link in a new window, courtesy of Paul McLanahan.Minor hack by me to ensure that titles don't appear off the right border of a page.Minor hack by me to make it work on links with images in (2007-05-08) at Vigdor's prompting (and many, many other people over the last four years or so) I don't see it! Your browser requires good DOM support for this to work. How does it work? Oh, you want to know what it actually does, eh? Stuart Langridge, February 2003