A theory of explanation might treat explanations in either a realist or an epistemic (that is, anti-realist) sense. A realist interpretation of explanation holds that the entities or processes an explanation posits actually exist--the explanation is a literal description of external reality.
Officers in pay grades O-1, O-2, and O-3 with more than four years of prior cumulative service in an enlisted or warrant officer grade are paid increased wages using the special pay grades of O-1E, O-2E, and O-3E, respectively.
The salary scale comprises six Professional levels (P-1 to P-6) and two Director levels (D1 and D2). The conditions for P6 and D1 positions are identical. The scales are expressed as gross and net base salaries and applied uniformly, worldwide, by all organizations in the United Nations common system.he remuneration of staff in the Professional and higher categories is made up of two main elements: a base salary and post adjustment. The post adjustment is an allowance based on the cost-of-living, exchange rate fluctuations and inflation in the different locations of assignment.