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The Risk Management Framework (RMF) is a United States federal government guideline, standard, and process for managing risk to help secure information systems (computers and networks). The RMF was developed by the National Institute of Standards and Technology (NIST), and provides a structured process that integrates information security ...
NIST Special Publication 800-53 is an information security standard that provides a catalog of privacy and security controls for information systems.Originally intended for U.S. federal agencies except those related to national security, since the 5th revision it is a standard for general usage.
Starting with Revision 3 of 800-53, Program Management controls were identified. These controls are independent of the system controls, but are necessary for an effective security program. Starting with Revision 4 of 800-53, eight families of privacy controls were identified to align the security controls with the privacy expectations of ...
A representative pressure–volume diagram for a refrigeration cycle. Vapour-compression refrigeration or vapor-compression refrigeration system (VCRS), [1] in which the refrigerant undergoes phase changes, is one of the many refrigeration cycles and is the most widely used method for air conditioning of buildings and automobiles.
NIST Special Publication 800-37 Rev. 1 was published in February 2010 under the title "Guide for Applying the Risk Management Framework to Federal Information Systems: A Security Life Cycle Approach". This version described six steps in the RMF lifecycle. Rev. 1 was withdrawn on December 20, 2019 and superseded by SP 800-37 Rev. 2. [1]
1994 - Large Tonnage Single Screw Compressor Chiller; 1994 - Entire Line of Centrifugal Compressor Chillers Using HFC Refrigerants; 1995 - Custom Modular Commercial Air Handler; 2002 - First Commercial Water Source Heat Pump Using R-410A; 2003 - Largest and Quietest Air-cooled Screw Compressor Chiller
An air handler, or air handling unit (often abbreviated to AHU), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning system. [1] An air handler is usually a large metal box containing a blower , furnace or A/C elements, filter racks or chambers, sound attenuators , and dampers . [ 2 ]
HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. [1] Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken (e.g. start the ...
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