Results 11 to 20 of about 2,620 (248)

Hyperstability and Superstability [PDF]

open access: yesAbstract and Applied Analysis, 2013
Summary: This is a survey paper concerning the notions of hyperstability and superstability, which are connected to the issue of Ulam's type stability. We present the recent results on those subjects.
Janusz Brzdek, Krzysztof Ciepliński
exaly   +5 more sources

Hyperstable alkenes: are they remarkably unreactive? [PDF]

open access: diamondChem Sci
Maier and Schleyer first identified in silico that certain cage bicyclic olefins (alkenes) as “hyperstable”, and predicted them to be “remarkably unreactive”. However, this only applies to hydrogenation, as they were observed to undergo oxidation.
Summersgill MD   +6 more
europepmc   +5 more sources

Enhanced Vigilance Stability during Daytime in Insomnia Disorder [PDF]

open access: yesBrain Sciences, 2020
Central nervous hyperarousal is as a key component of current pathophysiological concepts of chronic insomnia disorder. However, there are still open questions regarding its exact nature and the mechanisms linking hyperarousal to sleep disturbance. Here,
Ariane Losert   +6 more
doaj   +2 more sources

A hyperstable collagen mimic

open access: bronzeChemistry & Biology, 1999
Collagen is the most abundant protein in animals. Each polypeptide chain of collagen is composed of repeats of the sequence: Gly-X-Y, where X and Y are often L-proline (Pro) and 4(R)-hydroxy-L-proline (Hyp) residues, respectively. These chains are wound into tight triple helices of great stability. The hydroxyl group of Hyp residues contributes much to
Steven K. Holmgren   +3 more
openalex   +3 more sources

Peptoid Residues Make Diverse, Hyperstable Collagen Triple-Helices [PDF]

open access: greenJournal of the American Chemical Society, 2021
The triple-helical structure of collagen, responsible for collagen’s remarkable biological and mechanical properties, has inspired both basic and applied research in synthetic peptide mimetics for decades. Since non-proline amino acids weaken the triple helix, the cyclic structure of proline has been considered necessary, and functional collagen ...
Julian L. Kessler   +8 more
openalex   +4 more sources

Characterization, stability and hyperstability of multi-quadratic–cubic mappings [PDF]

open access: goldJournal of Inequalities and Applications, 2021
In this paper, we unify the system of functional equations defining a multi-quadratic–cubic mapping to a single equation. Applying a fixed point theorem, we study the generalized Hyers–Ulam stability of multi-quadratic–cubic mappings.
Abasalt Bodaghi, Ajda Fošner
doaj   +2 more sources

On Hyperstability of the Cauchy Functional Equation in n-Banach Spaces [PDF]

open access: goldMathematics, 2020
We present some hyperstability results for the well-known additive Cauchy functional equation f(x+y)=f(x)+f(y) in n-normed spaces, which correspond to several analogous outcomes proved for some other spaces. The main tool is a recent fixed-point theorem.
Janusz Brzdęk, El-sayed El-hady
doaj   +2 more sources

On Bounded Strictly Positive Operators of Closed Range and Some Applications to Asymptotic Hyperstability of Dynamic Systems [PDF]

open access: goldAbstract and Applied Analysis, 2013
The problem discussed is the stability of two input-output feedforward and feedback relations, under an integral-type constraint defining an admissible class of feedback controllers.
M. De la Sen
doaj   +2 more sources

Hyperstability of a Monomial Functional Equation

open access: diamondJournal of Scientific Research and Reports, 2014
In this paper, we establish some hyperstability results concerning the monomial functional equation n X r=0 ( 1) n r C n rf(rx +y) = n!f(x)
Muaadh Almahalebi   +2 more
openalex   +3 more sources

Absorbeurs de vibrations hybrides hyperstables

open access: green, 2016
L'hybridation des systèmes actifs et passifs est une voie en plein essor que ce soit pour l'isolation ou l'amortissement des structures. L'hybridation a pour objectif de combiner le meilleur des approches actives et passives. Les apports principaux sont généralement l'adaptabilité apportée au système passif initial mais également l' amélioration des ...
Simon Chesné, Christophe Collette
openalex   +3 more sources

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