| Acronym | Meaning |
| RSCPA | Reduced (second Order) Self-consistent Phonon Approxn. (a Green-function Calcn. Method) |
| SP-RPAE | Spin Polarized-random Phase Approxn. (with) Exchange |
| CEPA | Correlated Electron Pair Approxn. |
| SEE | Space Environment And Effects |
| OCH | Ochkur (approxn. In Electron-atom Scattering Calcns.) |
| GEASIC | Gradient-expansion Approxn. Self-interaction Correction (functional |
| XES | X-ray Emission Spectroscopy |
| ECBM | Extended Classical Over-barrier Model (in Calcns. On Inelastic Ion-atom Colisions) |
| HCI | Human-Computer Interface |
| ATEM | Analytical Transmission Electron Microscopy |