1 Decoherence-free subspaces, subspace of a system's Hilbert space where the system is decoupled from the environment.  Dynamic Frequency Selection, part of the IEEE 802.11h wireless standard.
The American Psychological Association (APA) is a scientific and professional organization that represents psychologists in the United States.
The Administrative Procedure Act (APA) applies to all executive branch agencies, including so-. called independent regulatory agencies.1 The APA prescribes procedures for agency actions such. as rulemaking, as well as standards for judicial review of agency actions.2 Rulemaking is the.