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John Lemke

Beyond The Dawn - 0 views

shared by John Lemke on 09 Aug 11 - No Cached
  • Twitter Directory and Search, Find Twitter Followers : WeFollow wefollow.com - Find Twitter celebrities, actors, TV personalities, or new Twitter friends in your area. WeFollow is a directory of Twitter users organized by interests. Find likeminded friends today! davehennmusic davehennmusic Just added myself to the http://wefollow.com twitter directory under: #chicago_il #music #indie #songwriting #chicago #musician about 2 hours ago Reply Retweet Follow Unfollow Favorite Suicide Silence | Indienation.fm indienation.fm - At the RockStar Energy Mayhem Festival it was my great pleasure to sit down with Mark Heylmun the guitarist from Suicide Silence. If you have yet to hear their music, Suicide Silence performs an ex...
  • Suicide Silence | Indienation.fm indienation.fm - At the RockStar Energy Mayhem Festival it was my great pleasure to sit down with Mark Heylmun the guitarist from Suicide Silence. If you have yet to hear their music, Suicide Silence performs an ex...
John Lemke

'Smartware' clothing could signal impending epileptic seizures - 0 views

  • They are currently working on 'smartware', fabrics that treat chronic wounds that result from diabetes and leg ulcers. Their 'senseware' technology, which is motion sensors found inside textiles, can give medical professionals the tools they need to detect the onset of epileptic seizures. The centre's 'bioware' technology is embedded materials and surfaces found in the home and on the body.
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    "They are currently working on 'smartware', fabrics that treat chronic wounds that result from diabetes and leg ulcers. Their 'senseware' technology, which is motion sensors found inside textiles, can give medical professionals the tools they need to detect the onset of epileptic seizures. The centre's 'bioware' technology is embedded materials and surfaces found in the home and on the body."
John Lemke

Toyota shows off all solid state lithium superionic conductor based prototype battery - 0 views

  • last year the company described a prototype solid state lithium superionic conductor battery in an article in the journal Nature Materials that was based on a three dimensional framework. And just this month the company announced plans to introduce several new lines of hybrid and all electric vehicles over the next three years (after also announcing that the Prius hybrid now accounts for ten percent of all sales). The sticking point has been and remains, the batteries used in such vehicles which can account for up to half their cost to consumers.
  • The new battery, first described last year, uses Li10GeP2S12 in a layered three dimensional framework where cells are sandwiched together to create a stack of seven tiers with each having a voltage of four volts for a total of twenty eight at normal temperatures. The result, they say is a battery with five times the output density of previous varieties. To demonstrate its progress in refining the battery, the prototype was demonstrated recently to a group attending a green technology seminar as a power source for an electric scooter.
John Lemke

Ask Ethan #55: Could a Manned Mission to Mars Abort? - Starts With A Bang! - Medium - 0 views

  • No humans have ever traveled farther away from Earth than the crew of Apollo 13 did, as they circled around the far side of the Moon close to lunar apogee, achieving a maximum distance of 400,171 km above the Earth’s surface on April 15, 1970. But when the first manned spaceflight to another planet occurs, that record will be shattered, and in a mere matter of days.
  • The way we currently reach other worlds with our present technology — or any remote location in the Universe — involves three distinct stages:The initial launch, which overcomes the Earth’s gravitational binding energy and starts our spacecraft off with a reasonably large (on the order of a few km/s) velocity relative to the Earth’s motion around the Sun.On-board course corrections, where very small amounts of thrust accelerate the spacecraft to its optimal trajectory.And gravity assists, where we use the gravitational properties of other planets in orbit around the Sun to change our spacecraft’s velocity, either increasing or decreasing its speed with every encounter.It’s through the combination of these three actions that we can reach any location — if we’re patient and we plan properly — with only our current rocket technology.
    • John Lemke
       
      How we can do it now, if we plan right.
  • The initial launch is a very hard part right now. It takes a tremendous amount of resources to overcome the Earth’s gravitational pull, to accelerate a significant amount of mass to the Earth’s escape velocity, and to raise it all the way up through the Earth’s atmosphere.
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  • The most optimal one for a one-way trip to Mars, for those of you wondering, that minimizes both flight time and the amount of energy needed, involves simply timing your launch right.
    • John Lemke
       
      The cheapest and the fastest. The one way ticket option.
  • When a planet orbits the Sun, there’s a lot of energy in that system, both gravitational energy and kinetic energy. When a third body interacts gravitationally as well, it can either gain some energy by stealing it from the Sun-planet system, or it can lose energy by giving it up to the Sun-planet system. The amount of energy performed by the spacecraft’s thrusters is often only 20% (or less) of the energy either gained-or-lost from the interaction!
    • John Lemke
       
      The transfer of energy involved to change speeds.
John Lemke

Germany: Mosley takes on Google in privacy fight - 0 views

  • claiming the search engine is breaking German privacy laws by providing links to websites hosting a hidden-camera video of him at a sadomasochistic sex party.
  • Mosley successfully sued a British tabloid over a 2008 story headlined "Formula One boss has sick Nazi orgy with five hookers." Mosley has acknowledged the orgy, but says the story was an "outrageous" invasion of privacy and the Nazi allegation was damaging and "completely untrue."
John Lemke

Uroburos Rootkit: Most sophisticated 3-year-old Russian Cyber Espionage Campaign - The ... - 0 views

  • The researchers claimed that the malware may have been active for as long as three years before being discovered and appears to have been created by Russian developers.
  • The two main components of Uroburos are - a driver and an encrypted virtual file system, used to disguise its nasty activities and to try to avoid detection. Its driver part is extremely complex and is designed to be very discrete and very difficult to identify.
  • The virtual file system can’t be decrypted without the presence of drivers, according to the Gdata’s analysis explained in the PDF.
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  • we assume that the group behind Uroburos is the same group that performed a cyberattack against the United States of America in 2008 with a malware called Agent.BTZ
  • The attacks carried out with Uroburos are targeting government institutions, research institutions, intelligence agencies, nation states, research institutions or companies dealing with sensitive information as well as similar high-profile targets. The oldest drivers identified by the researchers was compiled in 2011 is the evidence that the malware was created around three years ago and was undetected.
John Lemke

Hackers Using 'Shellshock' Bash Vulnerability to Launch Botnet Attacks - 0 views

  • Researchers on Thursday discovered a critical remotely exploitable vulnerability in the widely used command-line shell GNU Bourne Again Shell (Bash), dubbed "Shellshock" which affects most of the Linux distributions and servers worldwide, and may already have been exploited in the wild to take over Web servers as part of a botnet that is currently trying to infect other servers as well.
  • the vulnerability is already being used maliciously by the hackers.
  • There is as of yet no official patch that completely addresses both vulnerabilities, including the second, which allows an attacker to overwrite files on the targeted system.
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  • It's things like CGI scripts that are vulnerable, deep within a website (like CPanel's /cgi-sys/defaultwebpage.cgi)," Graham wrote in a blog post. "Getting just the root page is the thing least likely to be vulnerable. Spidering the site and testing well-known CGI scripts (like the CPanel one) would give a lot more results—at least 10x." In addition, Graham said, "this thing is clearly wormable and can easily worm past firewalls and infect lots of systems. One key question is whether Mac OS X and iPhone DHCP service is vulnerable—once the worm gets behind a firewall and runs a hostile DHCP server, that would be 'game over' for large networks."
  • 32 ORACLE PRODUCTS VULNERABLE
  • PATCH ISSUED, BUT INCOMPLETE
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    "Researchers on Thursday discovered a critical remotely exploitable vulnerability in the widely used command-line shell GNU Bourne Again Shell (Bash), dubbed "Shellshock" which affects most of the Linux distributions and servers worldwide, and may already have been exploited in the wild to take over Web servers as part of a botnet that is currently trying to infect other servers as well."
John Lemke

Cambridge team breaks superconductor world record | University of Cambridge - 0 views

  • three tonnes of force inside a golf ball-sized sample of material that is normally as brittle as fine china.
  • Superconductors are materials that carry electrical current with little or no resistance when cooled below a certain temperature. While conventional superconductors need to be cooled close to absolute zero (zero degrees on the Kelvin scale, or –273 °C) before they superconduct, high temperature superconductors do so above the boiling point of liquid nitrogen (–196 °C), which makes them relatively easy to cool and cheaper to operate.
  • Superconductors are currently used in scientific and medical applications, such as MRI scanners, and in the future could be used to protect the national grid and increase energy efficiency, due to the amount of electrical current they can carry without losing energy.
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