Pic. Illusion. Hubble. Fractal Triangles Pattern Cellular Automata Rule. View image 238314783tabor.jpg - Zwixy.com Image Hosting. Why won't my USB hard drive stay mounted without constant disk access? My USB2 hard drive will only stay mounted if I keep accessing it.
If I don't, within 5 hours or fewer, I can't access files on the drive or even do a directory listing. I can then unmount the HD, power cycle it, and it will mount again as if nothing had happened. If I keep accessing the disk, say by continuously playing an MP3 mix on it, the disk acts completely normal: uptime now (with MP3s playing) is something like 20 hours without the shadow of a problem. The PC connected to the HD is a Linux box (Great Quality computer from Fry's; only previous hardware problem was crib death of the internal, non-USB hard disk).
Software is Knoppix 4.0 plus infrequent upgrades. I used to have an Iomega 250GB USB hard disk (ext3 file system) on one of the USB 2.0 ports on the PC. FWIW, I can mount my iRiver on USB and copy files back and forth with no problem, but I never keep it mounted long enough to have noticed whether the same thing happens. Please work that AskMeFi magic for me, people. List of important publications in economics. 5 Top Operating Systems For Your Business. LTS:metacognition. Prof Stephen Heppell. Is Time Disappearing From the Universe? -A Galaxy Classic. Remember a little thing called the space-time continuum?
Well what if the time part of the equation was literally running out? New evidence is suggesting that time is slowly disappearing from our universe, and will one day vanish completely. This radical new theory may explain a cosmological mystery that has baffled scientists for years. Scientists previously have measured the light from distant exploding stars to show that the universe is expanding at an accelerating rate. They assumed that these supernovae are spreading apart faster as the universe ages. However, to this day no one actually knows what dark energy is, or where it comes from. The team's proposal, which will be published in the journal Physical Review D, dismisses dark energy as fiction. “We do not say that the expansion of the universe itself is an illusion," he explains.
Currently, astronomers are able to discern the expansion speed of the universe using the so-called "red shift" technique. Posted by Rebecca Sato. 21 Lesser-Known Open-Source Applications for Windows. Unless you’ve been hiding under a rock in Madagascar for the last few years, you undoubtedly already know about the All-Star open-source applications for Windows.
I’m talking about applications such as Firefox, Thunderbird, GIMP, OpenOffice, and VLC. However, there are hundreds of lesser-known but highly-useful open-source applications available for Windows. A few of my favourites are below. These applications range from moderately popular to downright obscure, but all of them are open-source and FREE. All of them are worth the install time if you have never tried them.
Here they are, in random order: 1. ZScreen is an open-source screen capture program that quietly resides in your system tray until needed. If you frequently take screen shots, ZScreen is light years faster than pressing Print Scrn and pasting into MS Paint. 2. PDFCreator allows you to create PDFs from any program that can print. Chua circuit. Figure 1: The Chua Circuit.
The Chua Circuit is the simplest electronic circuit exhibiting chaos, and many well-known bifurcation phenomena, as verified from numerous laboratory experiments, computer simulations, and rigorous mathematical analysis. Historical Background The Chua Circuit was invented in the fall of 1983 (Chua, 1992) in response to two unfulfilled quests among many researchers on chaos concerning two wanting aspects of the Lorenz Equations (Lorenz, 1963).
The first quest was to devise a laboratory system which can be realistically modeled by the Lorenz Equations in order to demonstrate chaos is a robust physical phenomenon, and not merely an artifact of computer round-off errors. The second quest was to prove that the Lorenz attractor, which was obtained by computer simulation, is indeed chaotic in a rigorous mathematical sense. Picture Album: Nebulae. Proceedings of the National Academy of Sciences.