Results 21 to 30 of about 1,327,202 (268)

Interval oscillation criteria for nonlinear impulsive differential equations with variable delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this paper, the interval qualitative properties of a class of second order nonlinear differential equations are studied. For the hypothesis of delay being variable $\tau(t)$, an "interval delay function" is introduced to estimate the ratio of ...
Xiaoliang Zhou, Wu-Sheng Wang
doaj   +1 more source

Two Interval Upper-Bound Q-Function Approximations with Applications

open access: yesMathematics, 2022
The Gaussian Q-function has considerable applications in numerous areas of science and engineering. However, the fact that a closed-form expression for this function does not exist encourages finding approximations or bounds of the Q-function.
Zoran Perić   +5 more
doaj   +1 more source

Harmonically Convex Fuzzy-Interval-Valued Functions and Fuzzy-Interval Riemann–Liouville Fractional Integral Inequalities

open access: yesInternational Journal of Computational Intelligence Systems, 2021
It is well known that the concept of convexity establishes strong relationship with integral inequality for single-valued and interval-valued function.
Gul Sana   +4 more
doaj   +1 more source

Hermite-Hadamard- and Jensen-Type Inequalities for Interval h1,h2 Nonconvex Function

open access: yesJournal of Mathematics, 2020
In the present study, we will introduce the definition of interval h1,h2 nonconvex function. We will investigate some properties of interval h1,h2 nonconvex function.
Hongxin Bai   +4 more
doaj   +1 more source

Effects of high-intensity interval training program on pituartry function in basketball players: a randomized controlled trial

open access: yesFrontiers in Physiology, 2023
The aim of the study was to determine how the short high-interval training program affects cortisol levels in basketball players. A total of 27 male basketball players volunteered for the study and were randomly assigned to one of two groups: Control ...
Recep Soslu   +6 more
doaj   +1 more source

Width-Based Interval-Valued Distances and Fuzzy Entropies

open access: yesIEEE Access, 2019
In this paper, we study distance measures between interval-valued fuzzy sets and entropies of interval-valued fuzzy sets. These are well-known and widely used notions in the fuzzy sets theory.
Zdenko Takac   +4 more
doaj   +1 more source

Pacemaker‐Based Cardiac Neuromodulation Therapy in Patients With Hypertension: A Pilot Study

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021
Background In prior unblinded studies, cardiac neuromodulation therapy (CNT) employing a sequence of variably timed short and longer atrioventricular intervals yielded sustained reductions of systolic blood pressure (SBP) in patients with hypertension ...
Zbigniew Kalarus   +19 more
doaj   +1 more source

Paradoxical Functions on the Interval [PDF]

open access: yesProceedings of the American Mathematical Society, 1994
In this paper it is shown that any expanding with Lipschitz derivative function f f has a contradictory behaviour from the point of view of chaos in the sense of Li and Yorke. On the one hand it cannot generate scrambled sets of positive Lebesgue measure. On the other hand the two-dimensional set Ch ⁡ (
openaire   +2 more sources

Axiomatic characterization of the interval function of partial cubes and partial Hamming graphs

open access: yesAKCE International Journal of Graphs and Combinatorics
Interval function of a graph is a well-known notion in metric graph theory and the axiomatic characterization using a set of first order axioms of different graph classes is an interesting problem in this area.
Jeny Jacob   +4 more
doaj   +1 more source

Convergence of the solutions for the equation x(iv)+ax ⃛+bx¨+g(x˙)+h(x)=p(t,x,x˙,x¨,x ⃛)

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1988
This paper is concerned with differential equations of the formx(iv)+ax ⃛+bx¨+g(x˙)+h(x)=p(t,x,x˙,x¨,x ⃛)where a, b are positive constants and the functions g, h and p are continuous in their respective arguments, with the function h not necessarily ...
Anthony Uyi Afuwape
doaj   +1 more source

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