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Linux 3.8 Released

diegocg writes “Linux kernel 3.8 has been released. This release includes support in Ext4 for embedding very small files in the inode, which greatly improves the performance for these files and saves some disk space. There is also a new Btrfs feature that allows for quick disk replacement, a new filesystem F2FS optimized for SSDs; support for filesystem mount, UTS, IPC, PID, and network namespaces for unprivileged users; accounting of kernel memory in the memory resource controller; journal checksums in XFS; an improved NUMA policy redesign; and, of course, the removal of support for 386 processors. Many small features and new drivers and fixes are also available. Here’s the full list of changes.” Read more of this story at Slashdot.

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Linux 3.8 Released

Ultrasound Waves Used To Increase Data Storage Capacity of Magnetic Media

Lucas123 writes “Electrical engineers at Oregon State University (OSU) said yesterday that they have found a technique to use high-frequency sound waves to improve magnetic data storage.The data write-technology breakthrough could allow greater amounts of data to be stored on both hard disk drives and NAND flash-based solid-state drives (SSDs), they said. Typically, when magnetic recording material is temporarily heated, even for an instant, it can become momentarily less stiff and more data can be stored at a particular spot. But, the technique has proven difficult to effectively increase capacity because heating tends to spread beyond where it is wanted and the technology involves complex integration of optics, electronics and magnetics, the researchers said. With the new technique, known as acoustic-assisted magnetic recording, ultrasound is directed at a highly specific location on the material while data is being stored, creating elasticity that allows “a tiny portion of the material to bend or stretch.” After the ultrasound is turned off, the material immediately returns to its original shape, but the data stored during the process remains in a dense form.” Read more of this story at Slashdot.

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Ultrasound Waves Used To Increase Data Storage Capacity of Magnetic Media

Unscrambling an Android Telephone With FROST

Noryungi writes “Researchers at the University of Erlangen demonstrate how to recover an Android phone confidential content, with the help of a freezer and FROST, a specially-crafted Android ROM. Quite an interesting set of pictures, starting with wrapping your Android phone in a freezer bag.” Read more of this story at Slashdot.

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Unscrambling an Android Telephone With FROST

Listen To Baby Ants Talking

pigrabbitbear writes “Complex, socially-tiered societies require complex communication. So perhaps it’s unsurprising that eusocial animals like ants are also incredibly communicative — more so than we previously understood, according to a new study in Current Biology. Many ants begin communicating acoustically from a very young age, in fact, in such a way that scientists suggest may be very important to their survival. As explained in an article by Carrie Arnold at ScienceNow, scientists believed until only recently that ants communicated only through pheromones, leaving, for example, scent trails behind them for other ants to follow — hence the phenomenon of single-file marching ants. (They can also, newer research suggests, use magnetic and vibrational landmarks to guide themselves around.)” Read more of this story at Slashdot.

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Listen To Baby Ants Talking

Ask Slashdot: Open-Source Forensic Surveillance Analysis Software?

McBooCZech writes “I am trying to set up a surveillance system. It is not intended to build a real-time on-line surveillance system to watch a wall of monitors on a 24/7 basis. The main scope is to record video (24/7) from the fixed cameras around our facility and when needed, get back to pre-recorded video and check it for particular event(s). Of course, it is possible to use a human to fast forward through video using a DVR-type FF function for short video sequences. Unfortunately, for long sequences (one week), it is not acceptable solution. I was searching online the whole weekend for the open source software for analysis of pre-recorded video in order to retrieve events and data from recorded video but had no luck. So I ask you, Slashdotters: Can you provide some suggestions for forensic software to analyze/find specific events in pre-recorded video? Some examples of events: ‘human entering restricted zone,’ ‘movement in the restricted zone,’ ‘light in the restricted zone.'” Read more of this story at Slashdot.

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Ask Slashdot: Open-Source Forensic Surveillance Analysis Software?

Glasses That Hack Around Colorblindness

MatthewVD writes “In 2006, researcher Mark Changizi came up with a novel theory for why humans evolved with color vision: to detect social cues and emotions in others. He built glasses called 02Amps to enhance perception of blood pooling. Some hospitals have tried using the glasses to see bruising that’s not visible unaided, or help nurses find veins. But it turns out now that the glasses might be able to fix some forms of colorblindness, too.” Read more of this story at Slashdot.

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Glasses That Hack Around Colorblindness