The paper offers a generalization of Kalton–Roberts’ theorem on uniformly exhaustive Maharam’s submeasures to the case of arbitrary sequentially continuous functionals. Applying the result one can reduce the problem of measurability of sequential cardinals to the question whether sequentially continuous functionals are uniformly exhaustive.

In this paper currently used DAC frequency domain parameters definitions are evaluated in order to achieve a consistent terminology that can be used in a DAC standard. New definitions for DAC THD, SFDR, SNR, SINAD and ENOB are proposed taking into account the most used definitions, the need of avoiding any ambiguities and the measurability of them.

For a given σ-ideal of sets, the notion of a generalized stepfunction is introduced and investigated in connection with the problem of sup-measurability of certain functions of two variables, regarded as superposition operators. 2000 Mathematics Subject Classification: 28A05, 28D05.

We show that Σ3-absoluteness under Sacks forcing is equivalent to the Sacks measurability of every ∆2 set of reals. We also show that Sacks forcing is the weakest forcing notion among all of the preorders which always add a new real with respect to Σ3 forcing absoluteness.

OBJECTIVES To assess the feasibility of nasal bone length (NBL), prenasal thickness (PT) and frontomaxillary facial (FMF) angle measurements performed on the same three-dimensional (3D) multiplanar-corrected profile view in healthy second- and third-trimester fetuses, to create reference ranges and to review published measurement techniques. METHODS 3D volumes of 219 healthy second- and third...