Based on the previously formulated mathematical model of a statistical system with scalar interaction fermions and theory gravitational-scalar instability cosmological based two-component scalar-charged degenerate fermions, numerical evolution perturbations is constructed specific examples development are given. Some features instability's investigated depending nature behavior unperturbed mode...

Understanding the behavior of viscoelastic (VE) fluids in confined geometries is crucial for applications biologic systems, heat transfer devices, enhanced oil recovery, and many others. Here, we perform a systematic steady-state simulation VE fluid at low Reynolds numbers through channel with successive smooth contractions expansions. We analyze hydrodynamic performance particular attention to...

Abstract The history of the last 15 years has been marked by many events at European level, some which led to wave EU enlargement in 2013, with accession Croatia, others that authorities take radical action order overcome crisis 2007-2008, and recently pandemic 2020, first contraction Union since its establishment, together decision Great Britain no longer be part Union, a phenomenon known as B...

We follow the contraction and evolution of a typical Jupiter-mass clump created by the disk instability mechanism, and compute the rate of planetesimal capture during this evolution. We show that such a clump has a slow contraction phase lasting ∼ 3×10 years. By following the trajectories of planetesimals as they pass through the envelope of the protoplanet, we compute the cross-section for pla...

We propose an approach to analyze the asymptotic behavior of Pólya urns based on the contraction method. For this a combinatorial discrete time embedding of the evolution of the composition of the urn into random rooted trees is used. A decomposition of the trees leads to a system of recursive distributional equations which capture the distributions of the numbers of balls of each color. Ideas ...

The dynamic nature of ontology development has motivated the formal study of ontology evolution problem. This paper addresses contraction —the problem of retracting information that should no longer hold in an ontology. We survey existing model and formula based semantics to contraction and investigate their properties for the description logics DL-Lite and EL, which underpin the QL and EL prof...

Objective: The use of drugs with herbal origin is increasing for treatment of gastrointestinal (GI) disorders. Rosa damascena (R. damascena) is a well-known plant suggested to have beneficial effect on GI system. In this study, the effect of aqueous fraction of R. damascena on the contractionsofisolated guinea pig ileum was investigated. Materials and Methods: Aqueous fraction of plant was obta...

jachymski [ proc. amer. math. soc., 136 (2008), 1359-1373] gave modified version of a banach fixed point theorem on a metric space endowed with a graph. in the present paper, (g, φ)-graphic contractions have been de ned by using a comparison function and studied the existence of fixed points. also, hardy-rogers g-contraction have been introduced and some fixed point theorems have been proved. s...