Definitions for "IEPA"
(Independent Electron Pair Approximation) An alternative method to the CI approach for obtaining electron correlation. Assumes the correlation energy is pair-wise additive: the correlation energy for each pair of electrons is obtained independently of all other electrons and then summed up. The method was developed by Sinanoglu (who called it Many-Electron Theory or MET) and Nesbet (who called it Bethe-Goldstone Theory).
Individual Expert Participation Agreement. An agreement between Sun Microsystems and an individual that allows that individual to serve on an Expert Group at the invitation of the Specification Lead. There is no fee associated with the IEPA and it is valid until the Expert Group disbands. The IEPA allows individual technical experts who do not represent companies or organizations to participate on an Expert Group without becoming a JCP Member.
Illinois Environmental Protection Agency
Irish Educational Publishers Association