Results 1 to 10 of about 1,342,355 (336)

Reversing orientation homeomorphisms of surfaces

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2021
Let $M$ be a connected compact orientable surface, $f:M\to \mathbb{R}$ be a Morse function, and $h:M\to M$ be a diffeomorphism which preserves $f$ in the sense that $f\circ h = f$. We will show that if $h$ leaves invariant each regular component of each
Iryna Kuznietsova, Sergiy Maksymenko
doaj   +1 more source

Using the Evolution Operator to Classify Evolution Algebras

open access: yesMathematical and Computational Applications, 2021
Evolution algebras are currently widely studied due to their importance not only “per se” but also for their many applications to different scientific disciplines, such as Physics or Engineering, for instance.
Desamparados Fernández-Ternero   +2 more
doaj   +1 more source

Kibble–Zurek scaling due to environment temperature quench in the transverse field Ising model

open access: yesScientific Reports, 2023
The Kibble–Zurek mechanism describes defect production due to non-adiabatic passage through a critical point. Here we study its variant from ramping the environment temperature to a critical point. We find that the defect density scales as $$\tau ^{-d\nu
Ádám Bácsi, Balázs Dóra
doaj   +1 more source

Smooth approximations and their applications to homotopy types

open access: yesPracì Mìžnarodnogo Geometričnogo Centru, 2020
Let $M, N$ the be smooth manifolds, $\mathcal{C}^{r}(M,N)$ the space of ${C}^{r}$ maps endowed with the corresponding weak Whitney topology, and $\mathcal{B} \subset \mathcal{C}^{r}(M,N)$ an open subset.
Олександра Олександрівна Хохлюк   +1 more
doaj   +1 more source

How Molecular Topology Can Help in Amyotrophic Lateral Sclerosis (ALS) Drug Development: A Revolutionary Paradigm for a Merciless Disease

open access: yesPharmaceuticals, 2022
Even if amyotrophic lateral sclerosis is still considered an orphan disease to date, its prevalence among the population is growing fast. Despite the efforts made by researchers and pharmaceutical companies, the cryptic information related to the ...
Maria Galvez-Llompart   +3 more
doaj   +1 more source

Semi‐supervised classification of fundus images combined with CNN and GCN

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Purpose Diabetic retinopathy (DR) is one of the most serious complications of diabetes, which is a kind of fundus lesion with specific changes. Early diagnosis of DR can effectively reduce the visual damage caused by DR. Due to the variety and different morphology of DR lesions, automatic classification of fundus images in mass screening can ...
Sixu Duan   +8 more
wiley   +1 more source

Supervised topological data analysis for MALDI mass spectrometry imaging applications

open access: yesBMC Bioinformatics, 2023
Background Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI MSI) displays significant potential for applications in cancer research, especially in tumor typing and subtyping.
Gideon Klaila   +2 more
doaj   +1 more source

Topological exploration of artificial neuronal network dynamics [PDF]

open access: yesNetwork Neuroscience, 2019
One of the paramount challenges in neuroscience is to understand the dynamics of individual neurons and how they give rise to network dynamics when interconnected.
Jean-Baptiste Bardin   +2 more
doaj   +1 more source

COVID-19 and the Importance of Being Prepared: A Multidisciplinary Strategy for the Discovery of Antivirals to Combat Pandemics

open access: yesBiomedicines, 2022
During an emergency, such as a pandemic in which time and resources are extremely scarce, it is important to find effective and rapid solutions when searching for possible treatments. One possibility in this regard is the repurposing of available “on the
Maria Galvez-Llompart   +4 more
doaj   +1 more source

Bio‐Mimicking Brain Vasculature to Investigate the Role of Heterogeneous Shear Stress in Regulating Barrier Integrity

open access: yesAdvanced Biology, Volume 6, Issue 12, December 2022., 2022
Fabrication of a lithography‐less Cayley‐tree pattern to generate a blood‐brain barrier‐on‐a‐chip. The shape of the microchannels in the Cayley‐tree pattern is semi‐elliptical with smooth variation in the height of the microchannels from the parent branch to daughter branches.
Ami Mehta   +9 more
wiley   +1 more source

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