Results 1 to 10 of about 54,737 (202)

The impact of pullback measurement on treatment decision in significant coronary artery disease: Insights from a retrospective multicentric study [PDF]

open access: yesInternational Journal of Cardiology: Heart & Vasculature
Background: Optimal management of coronary artery disease (CAD) requires tailoring treatment strategies to lesion characteristics. Intracoronary pullback enables hemodynamic mapping of coronary lesions, potentially improving therapeutic decision-making ...
Roberto Bova   +15 more
doaj   +2 more sources

Entropy Increase in Switching Systems [PDF]

open access: yesEntropy, 2013
The relation between the complexity of a time-switched dynamics and the complexity of its control sequence depends critically on the concept of a non-autonomous pullback attractor.
Ángel Giménez   +2 more
doaj   +3 more sources

Classification of 1-absorbing comultiplication modules over a pullback ring [PDF]

open access: yesCategories 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]

open access: yesCategories 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

open access: yesAdvances 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

Research on Multiple Pipelines Pullback Force of Trenchless Horizontal Directional Drilling Crossing Project

open access: yes南方能源建设, 2021
[Introduction] Trenchless horizontal directional drilling is widely used in power cable line project to cross natural or artificial obstacles at present.Multiple cable protection tubes need to be laid successfully at one time in engineering applications.
CAO Bo, HUANG Longxiang, LUO Yan
doaj   +1 more source

Guiding Myocardial Revascularization by Algorithmic Interpretation of FFR Pullback Curves: A Proof of Concept Study

open access: yesFrontiers 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

Pullback Attractors for a Nonautonomous Retarded Degenerate Parabolic Equation

open access: yesDiscrete Dynamics in Nature and Society, 2020
This paper is devoted to a nonautonomous retarded degenerate parabolic equation. We first show the existence and uniqueness of a weak solution for the equation by using the standard Galerkin method.
Fahe Miao, Hui Liu, Jie Xin
doaj   +1 more source

Pullback dan Pushout di Kategori Modul Topologis

open access: yesJurnal 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   +3 more
doaj   +1 more source

Degenerate pullback attractors for the 3D Navier-Stokes equations [PDF]

open access: yes, 2015
As in our previous paper, the 3D Navier-Stokes equations with a translationally bounded force contain pullback attractors in a weak sense. Moreover, those attractors consist of complete bounded trajectories.
Cheskidov, Alexey, Kavlie, Landon
core   +1 more source

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