Results 21 to 30 of about 134,367 (268)

Inverse diffusion theory of photoacoustics [PDF]

open access: yesInverse Problems, 2010
This paper analyzes the reconstruction of diffusion and absorption parameters in an elliptic equation from knowledge of internal data. In the application of photo-acoustics, the internal data are the amount of thermal energy deposited by high frequency radiation propagating inside a domain of interest. These data are obtained by solving an inverse wave
Bal, Guillaume P., Uhlmann, Gunther
openaire   +3 more sources

Methods to Invert Temperature Data and Heat Flow Data for Thermal Conductivity in Steady-State Conductive Regimes

open access: yesGeosciences, 2019
Temperature and heat flow data carry specific information about the distribution of thermal conductivity variations which is not available in other geophysical data sets. Thus, thermal data constitute important complementary data sets in the multiphysics-
Wallace Anderson McAliley, Yaoguo Li
doaj   +1 more source

Global Characterization of CO2 Column Retrievals from Shortwave-Infrared Satellite Observations of the Orbiting Carbon Observatory-2 Mission

open access: yesRemote Sensing, 2011
The global characteristics of retrievals of the column-averaged CO2 dry air mole fraction, XCO2, from shortwave infrared observations has been studied using the expected measurement performance of the NASA Orbiting Carbon Observatory-2 (OCO-2) mission ...
Charles Miller   +4 more
doaj   +1 more source

On the Inverse Problem of Galois Theory [PDF]

open access: yesTransactions of the American Mathematical Society, 1975
Let k k be a field, F
openaire   +2 more sources

Inverse Problem of Potential Theory

open access: yesApplied Mathematics Letters, 2018
P. Novikov in 1938 has proved that if $u_1(x)=u_2(x)$ for $|x|>R$, where $R>0$ is a large number, $$u_j(x):=\int_{D_j}g_0(x,y)dy, \quad g_0(x,y):=\frac 1 {4π|x-y|},$$ and $D_j\subset \mathbb{R}^3$, $j=1,2,$ $D_j\subset B_R$, are bounded, connected, smooth domains, star-shaped with respect to a common point, then $D_1=D_2$. Here $B_R:= \{x: |x|\le
openaire   +2 more sources

Inverse Problems in Neural Field Theory [PDF]

open access: yesSIAM Journal on Applied Dynamical Systems, 2009
We study inverse problems in neural field theory, i.e., the construction of synaptic weight kernels yielding a prescribed neural field dynamics. We address the issues of existence, uniqueness, and stability of solutions to the inverse problem for the Amari neural field equation as a special case, and prove that these problems are generally ill-posed ...
Roland Potthast, Peter beim Graben
openaire   +1 more source

Inverse Optimization: Theory and Applications

open access: yesOperations Research
A Review of Inverse Optimization In recent years, there has been an explosion of interest in the mathematics and applications of inverse optimization. Unlike traditional optimization, which seeks to compute optimal decisions given an objective and constraints, inverse optimization takes decisions as input and determines an objective and/or ...
Timothy C. Y. Chan   +2 more
openaire   +3 more sources

Agnostic geophysics

open access: yesAnnals of Geophysics, 1997
The physics of the Earth and the planets itself limits the knowledge that can be obtained of it. Two principle limitations are set in inverse problems and by chaotic dynamics; examples of each are given in this essay and some implications are discussed.
A. Cook
doaj   +1 more source

Rare Event Probability Estimation for Groundwater Inverse Problems With a Two‐Stage Sequential Monte Carlo Approach

open access: yesWater Resources Research
Bayesian inversions followed by estimations of rare event probabilities are often needed to analyze groundwater hazards. Instead of focusing on the posterior distribution of model parameters, the main interest lies then in the distribution of a specific ...
Lea Friedli, Niklas Linde
doaj   +1 more source

Serum Myonectin Levels Are Positively Associated With Physical Function and Lower Frailty‐Related Limitation in Maintenance Hemodialysis Patients: A Cross‐Sectional Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Maintenance hemodialysis (MHD) patients frequently suffer from frailty, characterized by reduced physical function and poor prognosis. Myokines, such as myonectin, secreted by muscle, are emerging regulators of systemic health. This study investigated the relationship between serum myonectin, adipokines (adiponectin, omentin), and ...
Kenichi Kono   +7 more
wiley   +1 more source

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