christopher bellavita's Profile

Member since Apr 28, 2009, follows 1 people, 1 public groups, 32 public bookmarks (32 total).

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  • PEX Products - FAQ on 2009-06-11

    • How are PEX systems tested for leaks?


      PEX plumbing and radiant heating systems can be pressure tested using water to check for leaks. Follow manufacturer's instructions.

    • s PEX freeze-break resistant?


      PEX piping is freeze damage resistant and can expand and contract as water freezes and thaws within the tubing. No tubing material is freeze-break proof, however, and PEX should be installed using the same locally-prescribed insulation requirements to prevent freezing of any plumbing system.

  • Cognitive Edge on 2009-05-20

    • A complex system is one in which the co-evolutionary process between agents and system (people and government being one manifestation of that) is such that any future state is inherently uncertain, cannot be modelled and defining outcome based targets produced perverted behaviour.


  • [Page 861c] Stephen Wolfram: A New Kind of Science | Online on 2009-05-19
    • And indeed Immanuel Kant wrote in 1790 that "it is absurd to hope that another Newton will arise in the future who will make comprehensible to us the production of a blade of grass according to natural laws".
  • [Page 5] Stephen Wolfram: A New Kind of Science | Online on 2009-05-19
    • he Principle of Computational Equivalence: that whenever one sees behavior that is not obviously simple--in essentially any system--it can be thought of as corresponding to a computation of equivalent sophistication.
  • [Page 5] Stephen Wolfram: A New Kind of Science | Online on 2009-05-19
  • Jobless Rate May Be High, but Millions Are Being Hired - NYTimes.com on 2009-05-06
  • Orientation-0901/0902: Critical Analysis of National Strategy for Homeland Security on 2009-05-05
    • definition of
      preventing and disrupting terrorist attacks, significance of
      natural disasters, and protection of critical
      infrastructure.
    • The need to
      protect the nation’s critical infrastructure is a clear
      similarity in all three documents. 
  • Orientation-0901/0902: Strategic Homeland Security Themes on 2009-05-05
    • I really think winning the battle of ideals and attempting to stop the spread of radical fundamentalism beliefs in the Islamic world will be key to a long-term winning strat
  • Orientation-0901/0902: Homeland-Security Strategies on 2009-05-05
    • In 2007, the Bush administration cited four objectives
    • Border Security
  • Orientation-0901/0902: Homeland Security Strategy Response on 2009-05-05
    • The topic of
      discussion was on improvised nuclear devices and specifically how
      such a device would impact NY City if detonated in lower
      Manhattan. Several models were presented to generate discussion
      about response strategies by first responders. The speakers
      presented claims that indicated that this scenario is not
      something we should take lightly.  The FDNY is
      starting to lead efforts in NY City to develop a comprehensive
      response strategy for this type of event.
    • The other side of the argument that was
      presented on the various talk shows and cable news network’s
      suggested that the report was an attempt at sensationalism.

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