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In mathematics, in the realm of group theory, a group is said to be critical if it is not in the variety generated by all its proper subquotients, which includes all its subgroups and all its quotients. [1] Any finite monolithic A-group is critical. This result is due to Kovacs and Newman. [2] But not every monolithic group is critical. [3]
Failure mode effects and criticality analysis (FMECA) is an extension of failure mode and effects analysis (FMEA). FMEA is a bottom-up , inductive analytical method which may be performed at either the functional or piece-part level.
Criticality (status), a milestone in the commissioning of a nuclear power plant; Criticality accident, an uncontrolled nuclear chain reaction; Nuclear criticality safety, the prevention of nuclear and radiation accidents resulting from an inadvertent, self-sustaining nuclear chain reaction; Prompt critical, an assembly for each nuclear fission ...
Critical design uses design fiction and speculative design proposals to challenge assumptions and conceptions about the role objects play in everyday life. Critical design plays a similar role to product design , but does not emphasize an object's commercial purpose or physical utility.
The Joback method, often named Joback–Reid method, predicts eleven important and commonly used pure component thermodynamic properties from molecular structure only. It is named after Kevin G. Joback in 1984 [1] and developed it further with Robert C. Reid. [2] The Joback method is an extension of the Lydersen method [3] and uses very similar groups, formulas, and parameters for the three ...
In operations research and engineering, a criticality matrix is a representation (often graphical) of failure modes along with their probabilities and severities. Severity may be classified in four categories, with Level I as most severe or "catastrophic"; Level II for "critical"; Level III for "marginal"; and Level IV for "minor". [1]
The Solomon four-group design is a research method developed by Richard Solomon in 1949. [1] It is sometimes used in social science , psychology and medicine. It can be used if there are concerns that the treatment might be sensitized by the pre-test . [ 2 ]
Mission critical systems are made to avoid inability to complete the overall system, project objectives or one of the goals for which the system was designed. Examples of mission-critical systems are a navigational system for a spacecraft, software controlling a baggage handling system of an airport, etc. [ 2 ] [ 1 ] [ 3 ]