Results 21 to 30 of about 60,263 (295)

Comprehensive Parametric Study of Blockage Effect on the Performance of Horizontal Axis Hydrokinetic Turbines

open access: yesEnergies, 2022
When a hydrokinetic turbine operates in a confined flow, blockage effects are introduced, altering the flow at and downstream of the rotor. Blockage effects have a significant effect on the loading and performance of turbines.
Abdulaziz Abutunis   +1 more
doaj   +1 more source

On the observed hysteresis in field-scale soil moisture variability and its physical controls

open access: yesEnvironmental Research Letters, 2016
The spatiotemporal variability of soil moisture ( θ ) has rarely been studied at the field scale across different seasons and sites. Here, we utilized 9 months of θ data in two semiarid ecosystems of North America to investigate the key relationship ...
G Mascaro, E R Vivoni
doaj   +1 more source

Existence and uniqueness for the nonstationary problem of the electrical heating of a conductor due to the Joule-Thomson effect

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1993
Existence of a weak solution is established for the initial-boundary value problem for the system ∂∂tu−div (θ(u)∇u)+σ(u)α(u)∇u∇v=σ(u)|∇v|2, div (σ(u)∇v)=0. The question of uniqueness is also considered in some special cases.
Xiangsheng Xu
doaj   +1 more source

An in-situ methodology to separate the contribution of soil water content and salinity to EMI-based soil electrical conductivity [PDF]

open access: yesSOIL
Salt accumulation in the root zone limits agricultural productivity and can eventually lead to land abandonment. Therefore, monitoring the spatial distribution of soil water content and solution salinity is crucial for effective land and irrigation ...
D. Autovino   +5 more
doaj   +1 more source

On φ-β-Absorbing Submodules

open access: yesEuropean Journal of Pure and Applied Mathematics, 2022
In this paper, we extend the concept of β-absorbing submodules to φ-β-absorbingsubmodules over a commutative ring with nonzero identity which is a generalization of 2-absorbing submodules. Let S(M) be the set of all submodules of M and φ : S(M) → S(M)∪{∅} be a function.
openaire   +2 more sources

Lepton flavor violating dilepton dijet signatures from sterile neutrinos at proton colliders

open access: yesJournal of High Energy Physics, 2018
In this article we investigate the prospects of searching for sterile neutrinos in lowscale seesaw scenarios via the lepton flavour violating (but lepton number conserving) dilepton dijet signature. In our study, we focus on the final state e ± μ ∓ jj at
Stefan Antusch   +4 more
doaj   +1 more source

On the Discounted Penalty Function for Claims Having Mixed Exponential

open access: yesNonlinear Analysis, 2006
It is considered the classical risk model with mixed exponential claim sizes. Using known results it is obtained the explicit expression of the GerberShiu discounted penalty function ψ(x,δ) = E e −δT 1(T < ∞) , by some infinite series. Here δ > 0 is the
J. Šiaulys, J. Kočetova
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

open access: yesFEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Kinetic model of dynamic recrystallization of DP1000 steel for auto body structures

open access: yesMaterials Research Express, 2021
Hot compression tests were performed in DP1000 steel under a temperature range of 950 ∼ 1150 °C with corresponding strain rate of 0.05 ∼ 10 s ^−1 to investigate the kinetic model of dynamic recrystallization (DRX) on a Gleeble 3800 thermal simulation ...
Hui Li   +5 more
doaj   +1 more source

A Q‐Learning Algorithm to Solve the Two‐Player Zero‐Sum Game Problem for Nonlinear Systems

open access: yesInternational Journal of Adaptive Control and Signal Processing, Volume 39, Issue 3, Page 566-581, March 2025.
A Q‐learning algorithm to solve the two‐player zero‐sum game problem for nonlinear systems. ABSTRACT This paper deals with the two‐player zero‐sum game problem, which is a bounded L2$$ {L}_2 $$‐gain robust control problem. Finding an analytical solution to the complex Hamilton‐Jacobi‐Issacs (HJI) equation is a challenging task.
Afreen Islam   +2 more
wiley   +1 more source

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