Results 141 to 150 of about 652,852 (288)

Stochastic dynamic of intravenous glucose-insulin model

open access: yesJournal of Inequalities and Applications
This paper examines a stochastic glucose-insulin regulatory system, introducing random noise to model environmental and biological fluctuations. To account for the time delay between glucose intake and insulin response, we present a delay differential ...
Tayebeh Waezizadeh, Mohammad Izadi
doaj   +1 more source

Lead‐free halide perovskites for efficient light‐emitting devices

open access: yesFlexMat, EarlyView.
Overview of Lead‐free metal halide perovskites with different categories and optoelectronic application directions, including solid‐state lighting, light‐emitting diodes, piezoluminescence, flexible electronics, scintillators and CPL emitters. Abstract Lead halide perovskites exhibit promising optoelectronic properties for optoelectronic applications ...
Yueqi Shen   +9 more
wiley   +1 more source

When Politics Meets Money: Geopolitical Risk and Money Demand in the US and Euro Area

open access: yesInternational Journal of Finance &Economics, EarlyView.
ABSTRACT This paper investigates the impact of geopolitical risk on real money demand in the United States and the Euro Area using Divisia monetary aggregates. To account for the potential instability of money demand and the complex nature of geopolitical shocks, we employ a comprehensive empirical framework combining linear and non‐linear ...
Anirban Sengupta   +2 more
wiley   +1 more source

Products of multidimensional matrices, stochastic matrices, and permanents

open access: yesSibirskie Elektronnye Matematicheskie Izvestiya
In this paper we consider four basic multidimensional matrix operations (outer product, Kronecker product, contraction, and projection) and two derivative operations (dot and circle products). We start with the interrelations between these operations and deduce some of their algebraic properties.
openaire   +3 more sources

Stochastic volatility and stochastic interest rates with mean-reverting Ornstein-Uhlenbeck and square root processing

open access: yes, 2005
In this paper, we extend the stochastic volatility model of Stein and Stein [25], where the volatility is given by a mean-reverting Ornstein-Uhlenbeck process to include stochastic interest rate given by mean-reverting square root process independent of ...
King, Rik, Ahlip, Rehez
core  

Maize Yield, Water Productivity and Economic Analysis Under Different Irrigation and Nitrogen Management Strategies Using Field Data and CERES‐Maize Model

open access: yesIrrigation and Drainage, EarlyView.
ABSTRACT There is limited integrated evaluation of nitrogen (N) and irrigation management strategies for improving maize yield and productivity using crop models. The effects of N and irrigation on maize yield and productivity under centre pivot (CPI) and subsurface drip irrigation (SDI) using the CERES‐Maize model were investigated. N treatments were (
Ebrahim Amiri   +2 more
wiley   +1 more source

ENSO or the Atlantic: Which Actually Governs the Hydrological Vulnerability of the Caatinga?

open access: yesInternational Journal of Climatology, EarlyView.
This study challenges the traditional ENSO‐centric paradigm of rainfall variability in the Caatinga by demonstrating that the Tropical Atlantic exerts a statistically dominant influence on regional hydrological vulnerability. Using a seasonal ARX/HAC model and CHIRPS data, we establish a new hierarchy of climatic drivers across six rainfall districts ...
Jonathan Antunes Ponte Cavalcante Leite   +3 more
wiley   +1 more source

Responses of primary producers, anoxia, and chemical feedback to Late Glacial climate change: Insights from a paired lake approach

open access: yesJournal of Quaternary Science, EarlyView.
Abstract Worldwide, lacustrine ecosystems are threatened by eutrophication and deoxygenation. Both processes are driven by the combined effects of human activities and climate change. Understanding the pre‐anthropogenic nexus between warming, eutrophication, deoxygenation, and related feedback is essential to determine how lakes respond to rapid ...
Noé R.M.M. Schmidhauser   +7 more
wiley   +1 more source

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