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The inverse k-max combinatorial optimization problem [PDF]

open access: yesYugoslav Journal of Operations Research, 2023
Classical combinatorial optimization concerns finding a feasible subset of a ground set in order to optimize an objective function. We address in this article the inverse optimization problem with the k-max function. In other words, we attempt to perturb
Nhan Tran Hoai Ngoc   +3 more
doaj   +1 more source

An Adaptive Projection Gradient Method for Solving Nonlinear Fractional Programming

open access: yesFractal and Fractional, 2022
In this study, we focus on solving the nonlinear fractional optimization problem in which the numerator is smooth convex and the denominator is smooth concave.
Mootta Prangprakhon   +2 more
doaj   +1 more source

Some q-Fractional Estimates of Trapezoid like Inequalities Involving Raina’s Function

open access: yesFractal and Fractional, 2022
In this paper, we derive two new identities involving q-Riemann-Liouville fractional integrals. Using these identities, as auxiliary results, we derive some new q-fractional estimates of trapezoidal-like inequalities, essentially using the class of ...
Kamsing Nonlaopon   +4 more
doaj   +1 more source

Experimental and Numerical Investigation of the Heat Transfer of Honeycomb-Structured Tubes

open access: yesThermo, 2023
Tube bundle recuperators are generally designed to operate with smooth tubes. Structured tubes can be used to increase the efficiency of recuperators. Compared to smooth tubes, the surface for heat transfer is increased and thus heat transfer is enhanced.
Eileen Trampe   +2 more
doaj   +1 more source

Negative Mood States Are Related to the Characteristics of Facial Expression Drawing: A Cross-Sectional Study

open access: yesFrontiers in Psychology, 2020
An assessment of mood or emotion is important in developing mental health measures, and facial expressions are strongly related to mood or emotion. This study thus aimed to examine the relationship between levels of negative mood and characteristics of ...
Chika Nanayama Tanaka   +6 more
doaj   +1 more source

Advances in Ostrowski-Mercer Like Inequalities within Fractal Space

open access: yesFractal and Fractional, 2023
The main idea of the current investigation is to explore some new aspects of Ostrowski’s type integral inequalities implementing the generalized Jensen–Mercer inequality established for generalized s-convexity in fractal space.
Miguel Vivas-Cortez   +4 more
doaj   +1 more source

Extremal problems related to convexity

open access: yesJournal of Inequalities and Applications, 2016
We consider the extremal problem of maximizing functions u in the class of real-valued biconvex functions satisfying a boundary condition ψ on a product of the unit ball with itself, with the ℓ p $\ell^{p}$ -norm. In 1986, Burkholder explicitly found the
Aimo Hinkkanen, Sineenuch Suwannaphichat
doaj   +1 more source

k-Fractional Estimates of Hermite–Hadamard Type Inequalities Involving k-Appell’s Hypergeometric Functions and Applications

open access: yesFractal and Fractional, 2019
The main objective of this paper is to obtain certain new k-fractional estimates of Hermite−Hadamard type inequalities via s-convex functions of Breckner type essentially involving k-Appell’s hypergeometric functions.
Muhammad Uzair Awan   +3 more
doaj   +1 more source

Parametric generalized (p,q)-integral inequalities and applications

open access: yesAIMS Mathematics, 2022
A new generalized (p,q)-integral identity is derived. Using this new identity as an auxiliary result, we derive new parametric generalizations of certain integral inequalities using the class of s-preinvex functions.
Kamsing Nonlaopon   +3 more
doaj   +1 more source

On $\mathscr{M}$-convex functions

open access: yesAIMS Mathematics, 2020
In this article, we introduce the notion of $\mathscr{M}$-convex functions, $\log$-$\mathscr{M}$-convex functions and the notion of quasi $\mathscr{M}$-convex functions. We derive some new analogues of Hermite-Hadamard like inequalities associated with $\
Muhammad Uzair Awan   +3 more
doaj   +1 more source

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