For North American companies, the UPC is an existing form of the GTIN. The family of data structures (not symbologies) comprising GTIN include: GTIN-12 (UPC-A): this is a 12-digit number used primarily in North America
A plateau is high, flat ground or a situation where something has stalled that was progressing forward previously. 1  An example of a plateau is a high, flat field.  An example of a plateau is a situation where no progress is being made on a project while you await funding approval.
In Modern Quantum Mechanics, however, the electron does not orbit the nucleus. It is a standing wave (the wavefunction/state vector) around the nucleus; and it's energy levels are given by the Eigenvalues of the Hamiltonian: $$E\psi = H\psi=i\hbar\frac{\partial\psi}{\partial t} $$ In QFT, again the same thing, the electron does not orbit; it's an excitation of the electron field determined by the Dirac Equation.