Results 151 to 160 of about 364 (182)

Likelihood Estimation for Stochastic Differential Equations with Mixed Effects

Scandinavian Journal of Statistics, EarlyView.
ABSTRACT Stochastic differential equations provide a powerful tool for modelling dynamic phenomena affected by random noise. When time series are observed for several experimental units, it is often the case that some of the parameters vary between the individual experimental units.
Fernando Baltazar‐Larios, Mogens Bladt, Michael Sørensen   +2 more
wiley   +1 more source

Bielecki-Ulam stability of a hammerstein-type difference system. [PDF]

MethodsX
Rahmat G, Ahmad S, Sarwar M, Abodayeh K, Chasreechai S, Sitthiwirattham T.   +5 more
europepmc   +1 more source

A qualitative study on the stability and existence of solutions in a fractional-order water pollution model via the predictor-corrector approach. [PDF]

Sci Rep
Iqbal N, Archana DK, Khan MNI, Prakasha DG.   +3 more
europepmc   +1 more source

A novel dual‐decomposition method for non‐convex two‐stage stochastic mixed‐integer quadratically constrained quadratic problems

International Transactions in Operational Research, Volume 33, Issue 5, Page 3128-3157, September 2026.
Abstract We propose the novel p‐branch‐and‐bound method for solving two‐stage stochastic programming problems whose deterministic equivalents are represented by non‐convex mixed‐integer quadratically constrained quadratic programming (MIQCQP) models. The precision of the solution generated by the p‐branch‐and‐bound method can be arbitrarily adjusted by
Nikita Belyak, Fabricio Oliveira
wiley   +1 more source

Optimal model‐based design of experiments for parameter precision: Supercritical extraction case

The Canadian Journal of Chemical Engineering, Volume 104, Issue 7, Page 3775-3795, July 2026.
Abstract This study investigates the process of chamomile oil extraction from flowers. A parameter‐distributed model consisting of a set of partial differential equations is used to describe the governing mass transfer phenomena in a cylindrical packed bed with solid chamomile particles under supercritical conditions using carbon dioxide as a solvent ...
Oliwer Sliczniuk, Pekka Oinas
wiley   +1 more source

Square integrable solutions and stability of a second-order stochastic integro-differential equation. [PDF]

Sci Rep
Oudjedi-Damerdji LF, Meziane M, Djidel O, Boulaaras S, Alharbi A.   +4 more
europepmc   +1 more source

Ordered Median Traveling Salesman Problem

Networks, Volume 88, Issue 1, Page 59-84, July 2026.
ABSTRACT This paper introduces a novel combinatorial optimization problem with ordering constraints, termed the Ordered Median Traveling Salesman Problem (OMTSP). The OMTSP integrates key elements from both the classic Traveling Salesman Problem (TSP) and the Ordered Median Location Problem.
Ivana Ljubić, Alfredo Marín, Justo Puerto, Francisco Temprano   +3 more
wiley   +1 more source

Analysis of variable-order fractional enzyme kinetics model with time delay. [PDF]

Sci Rep
Agilan K, Naveen S, Suganya S, Parthiban V.   +3 more
europepmc   +1 more source

Exact Solutions for the Moving Firefighter Problem on Trees

Networks, Volume 88, Issue 1, Page 42-58, July 2026.
ABSTRACT The moving firefighter problem (MFP) is a more realistic variant of the classic firefighter problem (FP), where firefighters require time for both travel and defense. Unfortunately, the only known exact solution for the MFP does not scale. In this paper, we establish that the MFP is NP‐complete on trees of maximum degree three and present four
Mauro A. Montenegro‐Meza, Uriel Corona‐Bermúdez, Rolando Menchaca‐Méndez, Ricardo Menchaca‐Méndez, José Alejandro Cornejo‐Acosta   +4 more
wiley   +1 more source

Modeling gonorrhea and HIV coinfection with predictive analytics for disability and mortality risks. [PDF]

Sci Rep
Ramzan Y, Guedri K, Awan AU, Kafle J, Niyazi HA, M Makhdoum B.   +5 more
europepmc   +1 more source