Results 91 to 100 of about 1,146 (216)

A Local Strong form Meshless Method for Solving 2D time-Dependent Schrödinger Equations

open access: yesپژوهش‌های ریاضی, 2018
This paper deals with the numerical solutions of the 2D time dependent Schr¨odinger equations by using a local strong form meshless method. The time variable is discretized by a finite difference scheme. Then, in the resultant elliptic type PDEs, special
Fariba Takhtabnoos, Ahmad Shirzadi
doaj  

Exploring novel solitary wave phenomena in Klein–Gordon equation using $$\phi ^{6}$$ ϕ 6 model expansion method

open access: yesScientific Reports
In this study, the $$\phi ^{6}$$ ϕ 6 -model expansion method is showed to be useful for finding solitary wave solutions to the Klein–Gordon (KG) equation.
Yasir A. Madani   +5 more
doaj   +1 more source

Periodic solutions to PDEs with fractional diffusion

open access: yes, 2016
The aim of this Bachelor's Thesis is the study of periodic solutions to nonlinear equations involving the fractional Laplace operator. Our starting point is the Benjamin-Ono equation in water waves, a completely integrable nonlinear problem in one dimension.
openaire   +1 more source

The Impact of Remoteness on the Outcomes of Children With Prenatal Drug Exposure: A Population‐Based Cohort Study

open access: yesJournal of Paediatrics and Child Health, EarlyView.
ABSTRACT Objective Remote residents have worse health outcomes than metropolitan residents, but whether geography impacts the outcomes of children with prenatal drug exposure (PDE) is uncertain. Design and Main Outcome Measures Linked population data was used to compare rates of death, hospitalisation, emergency department (ED) encounters and placement
Taylor Colligan   +12 more
wiley   +1 more source

Numerical solution of PDEs in periodical domains

open access: yes, 2018
We present in this work two schemes of approximation for numerical solutions of PDEs. The first one is the maximum entropy method (max-ent) and the second one is the b-spline method. These methods let us impose a special kind of boundary conditions: periodic boundary conditions for unbounded domains.
openaire   +1 more source

Measure‐valued processes for energy markets

open access: yesMathematical Finance, Volume 35, Issue 2, Page 520-566, April 2025.
Abstract We introduce a framework that allows to employ (non‐negative) measure‐valued processes for energy market modeling, in particular for electricity and gas futures. Interpreting the process' spatial structure as time to maturity, we show how the Heath–Jarrow–Morton approach can be translated to this framework, thus guaranteeing arbitrage free ...
Christa Cuchiero   +3 more
wiley   +1 more source

Nonmetric geometric flows and quasicrystalline topological phases for dark energy and dark matter in $$f(Q)$$ f ( Q ) cosmology

open access: yesEuropean Physical Journal C: Particles and Fields
We elaborate on nonmetric geometric flow theory and metric-affine gravity with applications in modern cosmology. Two main motivations for our research follow from the facts that (1) cosmological models for f(Q) modified gravity theories, MGTs, are ...
Laurenţiu Bubuianu   +4 more
doaj   +1 more source

Reinforcement Learning for Jump‐Diffusions, With Financial Applications

open access: yesMathematical Finance, EarlyView.
ABSTRACT We study continuous‐time reinforcement learning (RL) for stochastic control in which system dynamics are governed by jump‐diffusion processes. We formulate an entropy‐regularized exploratory control problem with stochastic policies to capture the exploration–exploitation balance essential for RL.
Xuefeng Gao, Lingfei Li, Xun Yu Zhou
wiley   +1 more source

Random Carbon Tax Policy and Investment Into Emission Abatement Technologies

open access: yesMathematical Finance, EarlyView.
ABSTRACT We analyze the problem of a profit‐maximizing electricity producer, subject to carbon taxes, who decides on investments into CO2$\rm CO_2$ abatement technologies. We assume that the carbon tax policy is random and that the investment in the abatement technology is divisible, irreversible, and subject to transaction costs.
Katia Colaneri   +2 more
wiley   +1 more source

A Model of Strategic Sustainable Investment

open access: yesMathematical Finance, EarlyView.
ABSTRACT We study a problem of optimal irreversible investment and emission reduction formulated as a nonzero‐sum dynamic game between an investor with environmental preferences and a firm. The game is set in continuous‐time on an infinite‐time horizon.
Tiziano De Angelis   +2 more
wiley   +1 more source

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