The contracting officer is designated as the source selection authority, unless the agency head appoints another individual for a particular acquisition or group of acquisitions. (6) Select the source or sources whose proposal is the best value to the Government (10 U.S.C. 2305(b)(4)(C) and 41 U.S.C. 3703(c)).
In mathematics, a critical point or stationary point of a differentiable function of a real or complex variable is any value in its domain where its derivative is 0. Some authors include in the critical points the limit points where the function may be prolongated by continuity and where the derivative is not defined.
Critical points of some common substances like air, argon, helium and more. At the critical point there is no change of state when pressure is increased or if heat is added. At the critical point the liquid and gas phase can't be distinguished, and there is no point referring to liquid or gas. At the critical point, the physical properties of the liquid and gaseous states are identical. For states above the critical point the gas is supercritical.