Results 1 to 10 of about 53,784 (240)
Pullback attractors for non-autonomous 2D-Navier–Stokes equations in some unbounded domains [PDF]
Comptes Rendus Mathematique, 2006 In this Note we first introduce the concept of pullback asymptotic compactness. Next, we establish a result ensuring the existence of a pullback attractor for a non-autonomous dynamical system under the general assumptions of pullback asymptotic ...
Tomás Caraballo, Grzegorz ŁUkaszewicz
exaly +6 more sources
Finite fractal dimension of pullback attractors for a nonclassical diffusion equation
AIMS Mathematics, 2022 In this paper, we investigate the finite fractal dimension of pullback attractors for a nonclassical diffusion equation in $ H^1_0(\Omega) $. First, we prove the existence of pullback attractors for a nonclassical diffusion equation with arbitrary ...
Xiaolei Dong, Yuming Qin
exaly +3 more sources
Laryngoscope Investigative Otolaryngology, 2019 Objective Different aspects should be considered to achieve an atraumatic insertion of cochlear implant electrode arrays as an important surgical goal. Intracochlear pressure changes are known to influence the preservation of residual hearing.
P Mittmann, Xiaofeng Liu
exaly +2 more sources
Pullback dan Pushout di Kategori Modul Topologis
Jurnal Matematika Integratif, 2022 A pullback of two morphisms with a common codomain $f\colon A\to C$ and $g\colon B\to C$ is the limit of a diagram consisting $f$ and $g$. The dual notion of a pullback is called a pushout. A pushout of two morphisms with a common domain $k\colon A\to B$
Yunita Septriana Anwar
exaly +3 more sources
Distal Snare Fishing (DSF): A New Method for Successful Wire Retrieval: Navigating Retrieval Strategies Like Fishing for the Perfect Catch [PDF]
Clin Case RepABSTRACT In rotablation cases where guidewire fragmentation occurs, distal snaring, guided by intravascular imaging and facilitated by guide extension, can be a safe and effective alternative to proximal snaring when standard retrieval methods fail.
Dumitrascu S +3 more
europepmc +2 more sources
Classification of 1-absorbing comultiplication modules over a pullback ring [PDF]
Categories and General Algebraic Structures with Applications, 2023 One of the aims of the modern representation theory is to solve classification problems for subcategories of modules over a unitary ring R. In this paper, we introduce the concept of 1-absorbing comultiplication modules and classify 1-absorbing ...
Farkhondeh Farzalipour, Peyman Ghiasvand
doaj +1 more source
Flatness properties of acts over semigroups [PDF]
Categories and General Algebraic Structures with Applications, 2021 In this paper we study flatness properties (pullback flatness, limit flatness, finite limit flatness) of acts over semigroups. These are defined by requiring preservation of certain limits from the functor of tensor multiplication by a given act. We give
Valdis Laan +3 more
doaj +1 more source
An Improved Model to Calculate Pullback Force of Trenchless Horizontal Directional Drilling Pipeline
Advances in Civil Engineering, 2022 In the pullback operation of horizontal directional drilling pipeline crossing, the existing calculation and prediction models of pullback force are relatively simple.
Xiao-qiang Liang +5 more
doaj +1 more source
Frontiers in Cardiovascular Medicine, 2021 Background: Coronary artery disease distribution along the vessel is a main determinant of FFR improvement after PCI. Identifying focal from diffuse disease from visual inspections of coronary angiogram (CA) and FFR pullback (FFR-PB) are operator ...
Jean-François Argacha +11 more
doaj +1 more source