Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Ruanui Nicholson"'
Publikováno v:
Applied Sciences, Vol 13, Iss 20, p 11606 (2023)
A Bayesian inference formulation is applied to the Resin Transfer Moulding process to estimate bulk permeability and race-tracking effects using measured values of pressure at discrete sensor locations throughout a preform. The algorithm quantifies u
Externí odkaz:
https://doaj.org/article/ba508906977e4bb78575298221cefeb6
Publikováno v:
IEEE Transactions on Biomedical Engineering. :1-11
Publikováno v:
Inverse Problems. 39:054001
The replacement of a nonlinear parameter-to-observable mapping with a linear (affine) approximation is often carried out to reduce the computational costs associated with solving large-scale inverse problems governed by partial differential equations
Autor:
Ruanui Nicholson, Jari P. Kaipio
Publikováno v:
Journal of Mathematical Imaging and Vision. 62:1227-1237
Multiplicative noise models are often used instead of additive noise models in cases in which the noise variance depends on the state. Furthermore, when Poisson distributions with relatively small counts are approximated with normal distributions, mu
Autor:
Samuel Scott, John O'Sullivan, Ruanui Nicholson, Cari Covell, Juliet Newson, Oliver J. Maclaren, María S Guðjónsdóttír
The Krafla area in north Iceland hosts a high-temperature geothermal system within a volcanic caldera. Temperature measurements from boreholes drilled for power generation reveal enigmatic contrast...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4636ee81fc84a80a855c7bd8ba4ce71e
https://doi.org/10.1002/essoar.10508100.1
https://doi.org/10.1002/essoar.10508100.1
Autor:
Ruanui Nicholson, Matti Niskanen
We consider the problem of simultaneously inferring the heterogeneous coefficient field for a Robin boundary condition on an inaccessible part of the boundary along with the shape of the boundary for the Poisson problem. Such a problem arises in, for
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::03c90891c53371094e80b17177787303
Publikováno v:
The Cryosphere, Vol 15, Pp 1731-1750 (2021)
We consider the problem of inferring the basal sliding coefficient field for an uncertain Stokes ice sheet forward model from synthetic surface velocity measurements. The uncertainty in the forward model stems from unknown (or uncertain) auxiliary pa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4fafad577f97250205c7ede4da2c76a
https://doi.org/10.5194/tc-2020-229
https://doi.org/10.5194/tc-2020-229
Autor:
Elvar K. Bjarkason, Oliver J. Maclaren, Michael O'Sullivan, Ruanui Nicholson, John O'Sullivan
Publikováno v:
Water Resources Research. 56
We consider geothermal inverse problems and uncertainty quantification from a Bayesian perspective. Our main goal is to make standard, `out-of-the-box' Markov chain Monte Carlo (MCMC) sampling more feasible for complex simulation models by using suit
Publikováno v:
Agriculture as a Metaphor for Creativity in All Human Endeavors ISBN: 9789811078101
Many parameter estimation problems are highly sensitive to errors. The Bayesian framework provides a methodology for incorporating these errors into our inversion. However, how to characterise the errors in a way that can be efficiently utilised rema
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1141b298cceb8d5bc1e1de4064b27582
https://doi.org/10.1007/978-981-10-7811-8_6
https://doi.org/10.1007/978-981-10-7811-8_6
We consider the reconstruction of a heterogeneous coefficient field in a Robin boundary condition on an inaccessible part of the boundary in a Poisson problem with an uncertain (or unknown) inhomogeneous conductivity field in the interior of the doma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7345bd67d2171f47018dddddb7508df0