be known 
In robust system analysis and robust controller design, the parameters of the nominal system and admissible perturbation classes are usually assumed to be known.


In the classical formulations of the problems of design of the robust optimal controllers, the equations of the nominal plant and the weights of the permissible perturbations are assumed to be known.


In this approach, the spacecraft orbit is considered to be known, and the optimization of the planning of experiments is reduced to composing the optimum sequence of zones for the performance of experiments.


The components of the tensor of turbulent viscosity are assumed to be known functions of the depth of the convective zone.


In problems involved with determining the stability of complex systems and in control problems, the dynamic characteristics of the turbinetype machines must be known.


For a strength analysis of underwater (hydrofoil) and abovewater wings, the magnitude of the overloads during impact on the free fluid surface must be known.


The interaction between the gas stream and the body or the obstacle in the launching tube must be known for a theoretical investigation of all these problems.


In this case the nonstationary wave field must be known at any distance from the scatterer, and in particular in its immediate vicinity.


The burnout curve, which describes the mixing and burning of hydrogen and air, is assumed to be known from previous numerical and experimental studies of these processes under supersonic flow conditions.


The inclusion is assumed to be located in the Fraunhofer zone of an external radiator, and the scattering amplitude of the inclusion is assumed to be known.


The distribution of local absorption coefficients is assumed to be known.


The spatial distribution of scattering density and its angular distribution are assumed to be known.


The cases are investigated where the local component of the total interactionit is assumed to be knowneither admits or does not admit the existence of bound states.


In this case, the accurate estimation of the size of the layer requires the arrangement of resonances at its edge to be known.


Before creating a noninvasive method to help As2O3's access, the safe and effective therapeutic concentration of As2O3 in the CNS ought to be known.


In the derivation of mathematical model, the Pennes equation is used, and two parameters which are very difficult to be known  the arterial blood temperatureTa and the metabolic heat generation rateqm, have been eliminated.


The Direction Of Arrival (DOA) and the relative time delay of every user's multipath must be known to realize the 2D RAKE receiver.


However to select and design the compensation system properly, its efficiency has to be known.


The impact of psychiatric impairment on violent behavior cannot be known in isolation, but must be considered in a social context.


It has to be known that in patients with massive transfusion, hypothermia and treatment with hydroxyethyl starch or dextrans carries the risk of misinterpretation of clotting assay results.

