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Software

Ask Slashdot: What Makes You Uninstall Apps? 243

jones_supa writes "One of the most important measuring sticks for the success of any software is how long a user keeps it installed after first trying it. Intel has an article about some of the most common reasons users abandon software. Quoting: 'Apps that don’t offer anything helpful or unique tend to be the ones that are uninstalled the most frequently. People cycle through apps incredibly quickly to find the one that best fits their needs. ... A lot of apps have a naturally limited lifecycle; i.e., apps that are centered around a movie release or an app that tracks a pregnancy, or an app that celebrates a holiday. In addition, apps with limited functionality, for example, “lite” games that only go so far, are uninstalled once the user has mastered all the levels.' Some of the common factors they list include: lengthy forms, asking for ratings, collecting unnecessary data, user unfriendliness, unnecessary notifications and, of course, bugs. Additionally, if people have paid even a small price for the app, they are more committed to keep it installed. So, what makes you uninstall a piece of software?"
Robotics

Self-Assembling Multi-Copter Demonstrates Networked Flight Control 48

cylonlover writes "Researchers at ETH Zurich have demonstrated an amazing capability for small robots to self-assemble and take to the air as a multi-rotor helicopter. Maximilian Kriegleder and Raymond Oung worked with Professor Raffaello D'Andrea at his research lab to develop the small hexagonal pods that assemble into flying rafts. The true accomplishment of this research is that there is not one robot in control – each unit in itself decides what actions to take to keep the group in the air in what's known as Distributed Flight Array."

Comment Re:0 is heavier than 1? (Score 2) 243

With the same reasoning one could argue that batteries increase in mass when charged as they take up energy - a probably much larger quantity of mass as the energies involved are so much greater.

But when you charge batteries the temperature of the appliance will climb few points. If we take account of the molecules of air displaced out of the appliance by the raising in the temperature an expansion of the air inside, the total weight of the appliance will decrease.

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