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Rob Jongschaap

Rob Jongschaap's Public Library

01 Mar 13

Summaries of Spacetime, Relativity, and Quantum Theories for beginning and advanced visitors, with Links to the Best Websites on Space,Time, Einstein's Relativity, Quantum Gravity, Quantum Physics, Dark Matter and Energy, plus a discussion of the possibility that we live in an essentially atemporal universe.

  • Check out the ASUS Eee Pad Transformer Prime, the very first quadcore tablet running on the new NVIDIA Tegra 3 platform

  • NVIDIA's truly unique twist in the Tegra 3 is the addition of a fifth CPU core that runs transparently to the OS. In NVIDIA's new architecture, the fifth core is identical to the four main cores--they're all ARM Cortex A9 CPUs. However, the added core is built to consume less power in standby mode and run at a lower clock speeds. The four main cores remain off while the device is in active standby mode (say sitting in your pocket or briefcase,) or while playing back music.


  • Times have changed and more recent interest in nuclear-powered aircraft is exemplified by the Airborne Metro concept developed under the 2008 Out Of The Box study conducted for the Advisory Council for Aeronautics Research in Europe (ACARE). The concept envisages very large "Air Cruisers" (below) - ultimately nuclear-powered - that would stay aloft semi-permanently.

    blog post photo
    Cruiser concept: ACARE

  • Bhupendra Khandelwal, a propulsion researcher at Cranfield University's School of Engineering in the UK, has taken a closer look at this concept, developing an air transport model (below) that combines nuclear-powered cruisers with chemical-powered short-range aircraft.

    blog post photo

    Graphics: Bhupendra Khandelwal, Cranfield University


  • Bhupendra Khandelwal, a propulsion researcher at Cranfield University's School of Engineering in the UK, has taken a closer look at this concept, developing an air transport model (below) that combines nuclear-powered cruisers with chemical-powered short-range aircraft.

    blog post photo

    Graphics: Bhupendra Khandelwal, Cranfield University

  • The concept
     This vast concept envisages an era when climate changing emissions, ground congestion and noise pollution will no longer be acceptable at their presently forecast levels. It seeks to sustain the apparently unlimited demands of people for travel without the huge penalties that these are beginning to impose.
     The concept depends upon the feasibility of very large flight vehicles, perhaps carrying over 3000 passengers and for these eventually to be nuclear powered. These large "Air Cruisers" would stay aloft on a semi-permanent basis receiving their loads of passengers, freight and supplies in mid-air.
     The concept does not require every airport or airline to be compatible with the cruiser concept but most of the large hubs would need to be capable of working in this way.
     Starting from the top level of the concept we could have the Airborne Metro system populated entirely by these long-range cruisers. They would travel on predictable, efficient looping paths that take each individual cruiser near to several major population hubs. Their flight paths would also be arranged to intersect with those of other cruisers so that links could be made to anywhere on the global cruiser network by changing from one cruiser to another.
    • The main benefits foreseen for the concept are:

       
         
      • Overall carbon fuel economy and in climate impact.
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      • Reduction in airport congestion.
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      • Reduction in noise at airports.
  • Policy issues
     The most important political issue with the concept would be the safety and security of the cruiser. No doubt there will be strong voices expressing opposition to the concept but challenges of similar magnitude have been overcome before. But optimism about the future should not overlook the real challenges of making a nuclear cruiser a practical, safe and secure prospect.
     The cruiser is not intended to land frequently. Its enormous size would allow landing only on a relatively few service bases and landing would need to be a considered step. This would prompt designers to allow for a range of in-flight incidents to be dealt with during normal flight or to provide sufficient margins for failed systems not to be replaced immediately.

     
     

  • Devices

         
     
       
             
     
     
     

    MeeGo's common core supports development for a variety of devices.

     
     
            
     
     
      
     
     
      
     
     
      
     
     
      
     
     
     

  • Intel reportedly plans to temporarily discontinue development of its MeeGo OS due to a lack of enthusiasm for the platform from handset and tablet PC vendors. Instead, Intel will focus on hardware products, with its handset platforms to be paired with either Android or Windows Phone in 2012, according to industry sources.

    In response, Intel said it does not comment on industry speculation or rumor. The company did say it remains committed to MeeGo and will continue to work with the community to develop and help meet the needs of customers and end users with open source.

  • Intel’s Meego OS could be dropped from the ranks due to a lack of enthusiasm from smartphone and tablet manufacturers. Industry sources say Intel will instead focus on hardware and turn to Android or Windows Phone 7 as a platform for mobile devices that debut in 2012.

     

    We asked Intel about the report, from Taiwanese publication Digitimes, and got this response:

     

    Intel does not comment on industry speculation or rumor. We remain committed to MeeGo and open source, and will continue to work with the community to help develop and meet the needs of customers and end users.

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