Results 121 to 130 of about 6,303,122 (262)

Anisotropic inverse problems for quasilinear elliptic equations

Journal of Physics: Conference Series, 2005
In this paper we discuss inverse boundary value problems for quasilinear elliptic equations in connection with the nonlinear conductivity problem and inverse problems in nonlinear material sciences.
openaire   +1 more source

A stability estimate for a Cauchy problem for an elliptic partial differential equation

, 2005
A two-dimensional inverse steady state heat conduction problem in the unit square is considered. Cauchy data are given for y ≤ 0, and boundary data are for x ≤ 0 and x ≤ 1. The elliptic operator is self-adjoint with non-constant, smooth coefficients. The
Berntsson, Fredrik,, Elden, Lars,
core   +1 more source

Moving Aggregate Modified Autoregressive Copula‐Based Time Series Models (MAGMAR‐Copulas)

Journal of Time Series Analysis, EarlyView.
ABSTRACT Copula‐based time series models can model univariate and stationary time series in a flexible way by decomposing the joint distribution of consecutive observations into a copula and the stationary distribution. Implicitly, this approach assumes a finite Markov order. In reality, a time series may not follow the Markov property.
Sven Pappert
wiley   +1 more source

Inverse boundary-value problems: Elliptic equations

Journal of Mathematical Analysis and Applications, 1970
AbstractInverse, or identification, problems are currently receiving a great deal of attention in virtually all scientific disciplines. Most of the work done so far has dealt with systems governed by ordinary differential equations. This paper points out that the methods most commonly used for these problems are not suitable for inverse problems ...
openaire   +2 more sources

Relative Arbitrage Opportunities With Interactions Among N Investors

Mathematical Finance, EarlyView.
ABSTRACT The relative arbitrage portfolio outperforms a benchmark portfolio over a given time‐horizon with probability one. With market price of risk processes depending on the market portfolio and investors, this paper analyzes the multi‐agent optimization of relative arbitrage opportunities in the coupled system of market and wealth dynamics.
Tomoyuki Ichiba, Nicole Tianjiao Yang
wiley   +1 more source

Causality-Aware Training of Physics-Informed Neural Networks for Solving Inverse Problems

Mathematics
Inverse Physics-Informed Neural Networks (inverse PINNs) offer a robust framework for solving inverse problems governed by partial differential equations (PDEs), particularly in scenarios with limited or noisy data. However, conventional inverse PINNs do
Jaeseung Kim, Hwijae Son
doaj   +1 more source

Chondrule size averaging in two and three dimensions

Meteoritics &Planetary Science, EarlyView.
Abstract Chondrule sizes are an important discriminant of chondrite groups and chondrule formation theories. Yet most studies report 2‐D sizes without attempting the somewhat tedious corrections to 3‐D proposed in the past literature. I show here that 3‐D size averages can be simply calculated directly from 2‐D averages of appropriate powers of sizes ...
Emmanuel Jacquet
wiley   +1 more source

Solar radiation pressure end-of-life disposal for Libration-point orbits in the elliptic restricted three-body problem

, 2015
This paper proposes an end-of-life propellant-free disposal strategy for Libration-point orbits in the elliptic restricted three-body problem as an extension of a preliminary study performed in the circular problem.
Colombo, Camilla, Soldini, Stefania, Soldini, S., Walker, Scott J.I., Walker, S. J. I.   +4 more
core   +1 more source

Stability and regularity of an inverse elliptic boundary value problem

, 1990
The inverse conductivity problem is that of recovering a spatially varying isotropic conductivity in the interior of some bounded region by means of steady-state measurements taken only at the boundary.
Dobson, David Clark
core  

Blankness in post‐post‐postmodern poetry

Orbis Litterarum, EarlyView.
Abstract Jameson's “myth” identifies reification as the leading cause of cultural change. The myth also adumbrates the semiotic form of post‐postmodernism and post‐post‐postmodernism, which Jameson himself did not explore. One of the most extreme varieties of post‐post‐postmodern verse is the would‐be blank poem, pursued by Russian Futurists, Lettrists,
Shawn Normandin
wiley   +1 more source