...tolerance (DT) DT is the capability of a computing environment and data to withstand a disaster (such as fire, loss of power, loss of communication components, or a natural catastrophe) and to continue operating, or to be returned to operation...
http://www.computerweekly.com/DowntimePDF/pdf/4AA0_6737ENW.pdf
...BEGINS FIRST STANDARDS FOR MEASURING POWERLOSS AT LOW POWER FACTOR AND FOR HANDLING...standards: one for the measurement of powerloss in apparatus at low power factors...the measurement of high-voltage powerloss in electrical power apparatus at...
http://standards.ieee.org/announcements/PR_P1715_New.html
...disengaged based upon exhaust gas pressure. This allows for effective sound suppression for the street, without the powerloss under high load. Dyno tests have proven power levels to be nearly identical to an exhaust using no silencer at all ...
http://firesport.com.au/used-apexi-active-silencer-turbo-boost--ad136669.htm