The image content detectability and image structure preservation are closely related concepts with undeniable role in image quality assessment. However, the most attention of image quality studies has been paid to image structure evaluation, few of them focused on image content detectability. Examining the image structure was firstly introduced and assessed in Structural SIMilarity (SSIM) measu...

A new iteration scheme for computing the sign of a matrix which has no pure imaginary eigenvalues is presented. Then, by applying a well-known identity in matrix functions theory, an algorithm for computing the geometric mean of two Hermitian positive definite matrices is constructed. Moreover, another efficient algorithm for this purpose is derived free from the computation of principal matrix...

mamiy serum samples has intensified our need for stable bilirubin standards for routine, repetitive calibration purposes. Crystalline I)ilirubin serves as a suitable primary standard, and when dissolved in chloroform, it yields reasonably stable stock solutions. However, whemi this is diluted with methanol to prepare a working standard, the resultimig solution lacks adequate stability for routi...

It is well-known that stable models (as dI-domains, qualitative domains and coherence spaces) are not fully abstract for the language PCF. This fact is related to the existence of stable parallel functions and of stable functions that are not monotone with respect to the extensional order, which cannot be defined by programs of PCF. In this paper, a paradigmatic programming language named StPCF...