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• SleepWell : un chercheur double l'autonomie des batteries en décalant l'activité Wi-Fi de plusieurs appareils reliés au même point d'accès

  SleepWell : un chercheur double l'autonomie des batteries En décalant l'activité Wi-Fi de plusieurs appareils connectés au même point d'accès Justin Manweiler chercheur à l'université Duke aux États-Unis travaille sur un concept qui pourrait être très bénéfique sur la durée de vie de nos batteries. Ces travaux se concentrent sur la connectivité Wi-Fi, notamment quand le smartphone, tablette ou laptop est amené à interagir avec plusieurs points d'accès, où quand plusieurs appareils sollicitent le même routeur. Actuellement, les périphériques activent périodiquement leur connectivité radio pour s'enquérir de la présence de données qu'ils doivent récupérer. Dan...

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• Sécurité : et si votre souris n'est pas si inoffensive ? Nouvelle approche ingénieuse de piratage, mise au point par NetraGard

  Et si votre souris n'est pas si inoffensive ? Nouvelle méthode de piratage ingénieuse, mise au point par NetraGard La firme de sécurité NetraGard vient de publier les détails d'une attaque informatique où une souris modifiée permet de compromettre un réseau informatique hautement sécurisé. Pour réussir cette attaque ingénieuse, NetraGard a donc équipé le plus inoffensif des périphériques avec un microcontrôleur avec support USB de type Teensy Board afin de simuler le clavier, en plus d'une mémoire flash. Quand cette supersouris est connectée à un ordinateur, le microcontrôleur envoie des signaux d'entrée clavier et exécute un logiciel stocké sur la mémoire Flash.

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• How do I point a new domain to start on a page that's not index.html on separate hosting?

  - by Owen Campbell-Moore

  I'm using a service (CMS/Host) called SquareSpace to host my site, and today I'm registering the domain for it. Basically, how do I make it so when somebody types www.tedxoxford.com it points at http://www.tedxoxford.com/landing (currently http://tedxoxford.squarespace.com/landing) instead of the default index? Is this possible? Squarespace is quite a restricted CMS and means that your logos etc all point to the index so I don't want people ending up on my landing/splash page every time they want the home page, only on the first time they type in the URL. A dirty hack would be to check the refferer and redirect anyone hitting the index to the landing page, but that's a lot of loading overhead I'd rather avoid...

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• A* Jump Point Search - how does pruning really work?

  - by DeadMG

  I've come across Jump Point Search, and it seems pretty sweet to me. However, I'm unsure as to how their pruning rules actually work. More specifically, in Figure 1, it states that we can immediately prune all grey neighbours as these can be reached optimally from the parent of x without ever going through node x However, this seems somewhat at odds. In the second image, node 5 could be reached by first going through node 7 and skipping x entirely through a symmetrical path- that is, 6 -> x -> 5 seems to be symmetrical to 6 -> 7 -> 5. This would be the same as how node 3 can be reached without going through x in the first image. As such, I don't understand how these two images are not entirely equivalent, and not just rotated versions of each other. Secondly, I'd like to understand how this algorithm could be generalized to a three-dimensional search volume.

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• 2D SAT How to find collision center or point or area?

  - by Felipe Cypriano

  I've just implemented collision detection using SAT and this article as reference to my implementation. The detection is working as expected but I need to know where both rectangles are colliding. I need to find the center of the intersection, the black point on the image above. I've found some articles about this but they all involve avoiding the overlap or some kind of velocity, I don't need this. I just need to put a image on top of it. Like two cars crashed so I put an image on top of the collision. Any ideas? ## Update The information I've about the rectangles are the four points that represents them, the upper right, upper left, lower right and lower left coordinates. I'm trying to find an algorithm that can give me the intersection of these points.

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• Should I provide fallbacks for HTML5/CSS3 elements in a web page at this point?

  - by Abluescarab

  I'm wondering if I should bother providing a fallback for HTML5 tags and attributes and CSS3 styling at this point in time. I know that there's probably still a lot of people out there who use older versions of browsers and HTML5/CSS3 are still fairly new. I read this article: Should I use non-standard tags in a HTML page for highlighting words? and one answer mentioned that people kind of "cheat" with older browsers by using the new tags and attributes, but styling them in CSS to ensure they show up right. This question: Relevance of HTML5: Is now the time? was asked about two years ago and I don't know how relevant it is anymore. For example, I want to use the placeholder and required attributes in a web form I'm building and it has no labels to show what each <input> is. How do I handle this, or do I bother?

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• How do I find the angle required to point to another object?

  - by Ginamin

  I am making an air combat game, where you can fly a ship in a 3D space. There is an opponent that flies around as well. When the opponent is not on screen, I want to display an arrow pointing in the direction the user should turn, as such: So, I took the camera location and the oppenent location and did this: double newDirection = atan2(activeCamera.location.y-ship_wrap.location.y, activeCamera.location.x-ship_wrap.location.x); After which, I get the position on the circumferance of a circle which surrounds my crosshairs, like such: trackingArrow.position = point((60*sin(angle)+240),60*cos(angle)+160); It all works fine, except it's the wrong angle! I assume my calculation for the new direction is incorrect. Can anyone help?

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• Sécurité : et si votre souris n'était pas si inoffensive ? Nouvelle approche ingénieuse de piratage, mise au point par NetraGard

  Et si votre souris n'était pas si inoffensive ? Nouvelle méthode de piratage ingénieuse, mise au point par NetraGard La firme de sécurité NetraGard vient de publier les détails d'une attaque informatique où une souris modifiée permet de compromettre un réseau informatique hautement sécurisé. Pour réussir cette attaque ingénieuse, NetraGard a donc équipé le plus inoffensif des périphériques avec un microcontrôleur avec support USB de type Teensy Board afin de simuler le clavier, en plus d'une mémoire flash. Quand cette supersouris est connectée à un ordinateur, le microcontrôleur envoie des signaux d'entrée clavier et exécute un logiciel stocké sur la mémoire Flash.

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• HP 530 Wireless problem. Bad communication with access point

  - by foxy

  I installed Ubuntu 11.10 on HP 530 and to make Wireless work installed STA driver from jockey (obviously proprietary) and, since it didn't work also installed their driver from HP website via ndiswrapper. After this (and a reboot) I see the WiFi indicator glowing, like it should be, and I am able to find local access points. But when I try to connect to mine personal one with WPA 2 security (with password) it hangs at authentification (I'm using wicd to manage wifi), and after a minute or so (I guess timeout of request happens) it says I have a wrong password (it is 100% correct). What might be the problem here? Yesterday I was able to connect to access point by changing type of encryption from passphrase to preshared key but didn't have internet access. Now, after reboot, I can't connect there again.

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• Android 2.2 cinq fois plus rapide que son prédécesseur ? "Froyo" est sur le point d'être dévoilé par

  Mise à jour du 14/05/10 Android 2.2 serait cinq fois plus rapide que Android 2.1 Froyo est sur le point d'être dévoilé par Google Une nouvelle sculpture vient de faire son apparition devant le siège de Google. Pour les initiés, cette curieuse tradition destinée à alimenter le « buzz » indique que la nouvelle version d'Android ne va tarder à être dévoilée officiellement. Pour l'instant, cette sculpture de Froyo (dessert à base de Yogourt glacé et nom de code d'Android 2.2) trône à coté d'un éclair et d'un Donuts, mais elle est encore recouverte d'un film plastic. En attendant qu'il soit retiré (trè...

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• Le build Milestone 2 de Windows 8 sur le point d'être achevé, une version bêta de l'OS cet été ?

  Le build Milestone 2 de Windows 8 sur le point d'être achevé, une version bêta de l'OS cet été ? Mise à jour du 21.02.2011 par Katleen La développement de Windows 8, ou Windows Next, suit son chemin. D'après plusieurs rumeurs qui évoquent des sources internes anonymes ayant confirmé l'information, Microsoft aurait terminé le deuxième build Milestone. En effet, après plusieurs versions compilées, dont 6.2.7928.0.winmain_win8m2.110214-1825, 6.2.7929.0.winmain_win8m2.110215-1802 et 6.2.7930.0.winmain_win8m2.110217-1825 ; vendredi dernier à vu poindre la mouture ?6.2.7947.0.winmain_win8m2_escrow.110218-1608″. Avec tous ces builds Milestone 2 compilés, le build M2 final est tout proc...

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• And at what point of modification to the original does source code with no license become owned by me?

  - by nathansizemore

  I've recently come across a publicly viewable project on Github that has no license associated with it. In this repo, there is a file with the logic and most of the code needed to work as a piece of a project I am working on. Not verbatim, but about 60% of it I'd like to use with various modifications. Once my code base is a little bit more stable, I plan to release what I've done under the WTFPL License. I've emailed the repo owner, and so far have not gotten a reply. I know I have the rights to fork the repo, but if I release a stripped down and modified version of the other project's file with mine, under the WTFPL, am I infringing on copyrights? Per Github's Terms of Service, by submitted a project on Github and making it viewable to the public, you are allowing other users to see and fork your project. Doesn't say anything about modifying, distributing, or using the fork. And at what point of modification to the original does it become owned by me?

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• At what point does a good programmer know he is skilled programmer? [closed]

  - by Eritrea

  Possible Duplicate: How Can I Know Whether I Am a Good Programmer? I am just guessing, there is no end to programming, there is always someone who know what you do not know, once you learn it all something evolves out of somewhere, and you have to learn that one. It is a perpetually process eventually. But, at what point can you consider yourself, you are worth much in the programming world? By the amount of your reputation on Stackechange or if you create your own software...? When can you even know?

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• Touch Mouse, la souris tactile multi-point de Microsoft issue d'un programme R&D futuriste bientôt commercialisée pour Windows 7

  Touch Mouse, la souris tactile multi-point de Microsoft Issue de son programme R&D avant-gardiste bientôt commercialisée À l'occasion du salon international CES 2011 de Las Vegas, Microsoft vient de présenter une souris baptisée Touch Mouse. Dotée d'un design assez avant-gardiste, cette souris est un périphérique tactile multipoint conçue pour Windows 7. Elle est née du projet Mouse 2.0 de Microsoft Research et de l'Applied Sciences Group. [IMG]http://ftp-developpez.com/gordon-fowler/Touch-Mouse.jpg[/IMG] « La nouvelle Touch Mouse est parfaite pour interagir de manière plus naturelle avec un PC sous Windows 7 », explique Ma...

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• Bad links point to old domain - should I disavow on new domain?

  - by user32573

  I am working with a site which we'll call www.newdomain.com, which was hit by Penguin this month despite no unusual practices. I found lots of really spammy links to their old site, www.olddomain.com, which 301s to the new domain. So I've gone through the process of identifying which links are really bad, made contact to ask for removal, and am at the stage of disavowing links. But wait! None of the bad links point to newdomain.com, and I worry that a disavow request via this domain in Webmaster Tools will damage something. Do the old band links affect the new site? If so, where do I disavow those old bad links? On Webmaster Tools for the new domain?

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• How to get local point inside a body where mouse click occurred in box2d?

  - by humbleBee

  I need to find out the point inside a body, lets say a rectangular object, where the mouse was clicked on. I'm makin a game where the force will be applied depending on where the mouse was clicked on the body. Any ideas? Will body.GetLocalPoint(b2vec2) work? I tried by passing the mouse coordinates when the click occurred when inside the body but if the body's position is (400,300) in world coordinates then for trace(body.GetLocalPoint(new b2vec2(mouseX,mouseY)).x); I get some value between 380 to 406 or something (eg. 401.6666666). I thought getLocalPoint will give something like x=-10 when clicked to the left of the centre of body or x=15 when clicked to the right. Language is As3 btw.

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• Does a program need to respond straight to the point or politely? [migrated]

  - by Fabian Bigler

  I wonder if it's better if the program responds straight to the point or politely. Consider the following example: The user clicks a button to print something based on a template. However, the template does not exist. Which feedback would you prefer: The template is not defined yet. Please make sure to set the template before you print it out. Make sure to configure the template before printing. The first statement is more polite. The user feels treated well. The second statement is more straight forward and faster understood. What is generally better?

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• Windows Server 2012 : le point complet sur les nouvelles licences avec Microsoft, qui publie un Livre Blanc récapitulatif

  Windows Server 2012 : Microsoft simplifie ses licences L'éditeur publie un Livre Blanc et fait un point complet avec Developpez.com De huit licences différentes pour la version 2008 R2, Windows Server 2012 est passé à quatre. Un travail de simplification nécessaire pour de nombreux observateurs et pour des utilisateurs qui se perdaient souvent dans les méandres de la tarification de la déclinaison de Windows pour serveurs. Sur les quatre nouvelles éditions, deux concernent les grandes entreprises et les hébergeurs (la Standard et la Datacenter). Deux autres - promises pour la fin de l'année ? seront plus spécifiquement adaptées aux PME (Essentials et Foundation).

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• A quel point l'Internet est-il étendu ? Il compterait actuellement 255 millions de sites et 1.97 milliards d'utilisateurs

  A quel point l'Internet est-il étendu ? Il compterait actuellement 255 millions de sites et 1.97 milliards d'utilisateurs La compagnie technologique Pingdom s'est penchée sur la taille de l'Internet, et sur les évènements qui l'ont atteint en 2010. A l'aide de statistiques révélées publiquement par des entreprises spécialisées, ainsi qu'en s'appuyant sur des recherches qu'elle a réalisée elle-même, Pingdom vient de publier des chiffres impressionnant sur le Web. De quoi avoir le vertige. Ainsi, 107 trilliards d'e-mails ont été échangés l'année dernière. Actuellement, la Toile compterait 255 millions de sites Internet pour 88.8 millions de domaines en ".com". 1.97 milliard d'êtres humains seraient des intern...

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• SAP : « Notre Cloud doit être très solide et fonctionner quoiqu'il arrive », le point sur les offres hébergées de l'éditeur allemand

  SAP : « Notre Cloud doit marcher quoiqu'il arrive et être très solide » Le point sur les offres hébergées de l'éditeur allemand Depuis le rachat de Business Object, SAP ne cesse de le répéter : il n'est plus seulement un éditeur de solutions ERP. Il est multi-produit. Le rachat de Sybase a confirmé cette diversification en lui permettant de proposer des solutions de mobilité et même des outils de développement en rapport avec les terminaux nomades. Pour SAP, la diversification passe aussi par le SaaS (logiciel à la demande). Aujourd'hui, le Cloud est...

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• What is the point to namespaces in branches in git?

  - by dukeofgaming

  So I mainly use Mercurial for my projects and I decided to sit down and learn all Git's shenanigans to discover if I'm in the right side (at least for me). I'm learning that git uses namespaces for branches and I would like to know (in your experience) what is the point of namespaces?. In Mercurial I could just set the convention of naming branches like so: <branch name> //for "origin" branches <username>/<branch name> //for user branches I imagine that there is more to it than just the name (aside from avoiding naming conflicts), but what do I get out of this seemingly more complicated (not necessarily bad) model?

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• how to stop enemies from moving to one point when lots of them are chasing one object [duplicate]

  - by BBgun

  This question already has an answer here: Is there a simple way to stop enemies standing in the same spot? 8 answers i am making a top down game which lots of enemies are chasing one guy. then,enemies would move to one point without any collision,they just overlay each other. so ,is there any simple way to make them feel more real? make them not overlay with each other? ================================= i have tried the solution using boundbox to check collision, but i still very puzzled about what to do with the collision. i have a bad solution.it doesn't work well. my solution in simple: foreach(around_enemy_arr in other) { vector a = normalize(self.positionvector - other.positionvector); self.move_vector = self.move_vector + a; } this can work,but when plenty of enemies come very close to each other,they would shake. i am sooooo confused. please help.

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• How to point a Wordpress registered domain to github pages?

  - by Dave Castillo

  I'm trying to use a CNAME file in my git hub project to point to my wordpress registered domain name. E.g. example.com to point to myusername.github.com. I read Github-Setting up a custom domain and it tells me to point the domain to their servers: For a TLD like example.com, you should use an A record pointing to 204.232.175.78: But in the wordpress domain manager I only get the option to specify a nameserver like this: NS1.WORDPRESS.COM NS2.WORDPRESS.COM Inputting 204.232.175.78 in the wordpress manager give me an "invalid TLD." What am I doing wrong and how can I troubleshoot this issue?

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• Using the option port on my Watchguard Firebox as a 2nd gateway exit point?

  - by Donovan

  I'm working on a network project in witch I have to design our network to provide two different exit points. The points are differentiated by the path through the corporate network. One of them travels through some monitoring hardware the other does not. We have a Watchguard Firebox in use as our gateway. Currently the network side provides the unmonitored exit point. I was wondering if i hooked the option port to our lan at a point that would force traffic through the monitored path, would it cause any problems? Access to the unmonitored gateway port would be restricted by ip. That would force all others not authorized to point to the monitored gateway port. I thought with the above design i might be able to get away with not having to buy another firebox to achieve the design I want. Thanks, D

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• What is the best way to setup a public and private wireless access point on the same home network?

  - by Dougman

  For my home network (with internet provided from a cable modem) I would like to setup a secure wireless access point that I use for all of my personal connections (home PC, iPhone, Xbox, etc) and also another public access point that friends and folks in the neighborhood may connect to (for good karma). I want to ensure that my private traffic cannot be accessed from users of the public access point. I currently have one router that is running the Tomato firmware that I use with WPA security. What is the best way to accomplish this kind of setup securely (if it is possible in a home environment)?

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