Results 21 to 30 of about 569,907 (264)

Markov decision processes approximation with coupled dynamics via Markov deterministic control systems

open access: yesOpen Mathematics, 2023
This article presents an approximation of discrete Markov decision processes with small noise on Borel spaces with an infinite horizon and an expected total discounted cost by the corresponding deterministic Markov process.
Portillo-Ramírez Gustavo   +3 more
doaj   +1 more source

Canopy height impact on legume mass and Megathyrsus maximus tiller dynamics in mixed pastures

open access: yesActa Agriculturae Scandinavica. Section B, Soil and Plant Science, 2023
The use of grazing management strategies can influence canopy structure and the permanence of legumes. The objective of this work was to evaluate the determination of forage canopy heights as a grazing management strategy regarding herbage mass ...
Ana Flávia Bastos Ongaro   +9 more
doaj   +1 more source

Stability index of linear random dynamical systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
Given a homogeneous linear discrete or continuous dynamical system, its stability index is given by the dimension of the stable manifold of the zero solution.
Anna Cima   +2 more
doaj   +1 more source

A Recap of Voltage Stability Indices in the Past Three Decades

open access: yesEnergies, 2019
Increasing demand for electricity and the modernization of power systems within competitive markets has induced power systems to operate close to their stability limits.
Mir Sayed Shah Danish   +5 more
doaj   +1 more source

The effect of moment redistribution on the stability of reinforced concrete moment resisting frame buildings under the ground motion [PDF]

open access: yesJournal of Structural and Construction Engineering, 2017
In recent years some studies have been done on the moment rredistribution in buildings and new methods offered for calculating of redistribution. Observations demonstrated that the combination of moment and shear force is important in analysis of ...
Mahdi Golpayegani, Alireza Mortezaei
doaj   +1 more source

Performance and Stability of Different Monoecious Hemp Cultivars in a Multi-Environments Trial in North-Eastern Italy

open access: yesAgronomy, 2021
The seed yield in hemp (Cannabis sativa L.) is strongly influenced, besides by genotype, by environment and the genotype x environment interaction, so establishing the fitness and stability of hemp cultivars in multiple environments is necessary.
Claudio Ferfuia   +6 more
doaj   +1 more source

Increase in Stability of an X-Configured AUV through Hydrodynamic Design Iterations with the Definition of a New Stability Index to Include Effect of Gravity

open access: yesJournal of Marine Science and Engineering, 2021
A study about the effect of different configurations of stationary and movable appendages on the dynamic stability of an autonomous underwater vehicle (AUV) is presented.
Lakshmi Miller   +2 more
doaj   +1 more source

SOME EXTREMAL RESULTS ON THE CHROMATIC STABILITY INDEX [PDF]

open access: yesBulletin of the Australian Mathematical Society, 2022
AbstractThe $\chi $ -stability index $\mathrm {es}_{\chi }(G)$ of a graph G is the minimum number of its edges whose removal results in a graph with chromatic number smaller than that of G. We consider three open problems from Akbari et al. [‘Nordhaus–Gaddum and other bounds for the chromatic edge-stability number’, European J.
SHENWEI HUANG   +4 more
openaire   +3 more sources

Time-Dependent Rheological Behavior of Surface-Coated Calcite Powder: Implications for Industrial Applications

open access: yesCrystals
In this study, the effects of stearic acid coating concentration (0.85%, 1%, and 1.15% wt.) and storage duration (up to 30 days) on the flow properties of surface-modified micronized calcite powder were investigated to evaluate their implications for ...
Orkun Ersoy   +2 more
doaj   +1 more source

A Static Stability Analysis Method for Passively Stabilized Sounding Rockets

open access: yesAerospace
Sounding rockets constitute a class of rocket with a generally simple layout, being composed of a cylindrical center-body, a nosecone, a number of fins placed symmetrically around the longitudinal axis (usually three or four), and possibly a boat-tail ...
Riccardo Cadamuro   +3 more
doaj   +1 more source

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