Results 21 to 30 of about 486,765 (184)

Modeling Anomalous Diffusion by a Subordinated Integrated Brownian Motion

open access: yesAdvances in Mathematical Physics, 2017
We consider a particular type of continuous time random walk where the jump lengths between subsequent waiting times are correlated. In a continuum limit, the process can be defined by an integrated Brownian motion subordinated by an inverse α-stable ...
Long Shi, Aiguo Xiao
doaj   +1 more source

Approximation of Bayesian inverse problems for PDEs [PDF]

open access: yes, 2010
Inverse problems are often ill posed, with solutions that depend sensitively on data. In any numerical approach to the solution of such problems, regularization of some form is needed to counteract the resulting instability.
Dashti, Massoumeh   +7 more
core   +1 more source

A functional limit theorem for random processes with immigration in the case of heavy tails

open access: yesModern Stochastics: Theory and Applications, 2017
Let $(X_{k},\xi _{k})_{k\in \mathbb{N}}$ be a sequence of independent copies of a pair $(X,\xi )$ where X is a random process with paths in the Skorokhod space $D[0,\infty )$ and ξ is a positive random variable. The random process with immigration $(Y(u))
Alexander Marynych, Glib Verovkin
doaj   +1 more source

Does Neuroticism Disrupt the Psychological Benefits of Nostalgia? A Meta‐analytic Test

open access: yesEuropean Journal of Personality, EarlyView., 2020
Abstract Nostalgia, a sentimental longing or wistful affection for the past, confers self‐oriented, existential, and social benefits. We examined whether nostalgic engagement is less beneficial for individuals who are high in neuroticism (i.e. emotionally unstable and prone to negative affect).
Julius Frankenbach   +4 more
wiley   +1 more source

Inverse medium problem for a singular contrast [PDF]

open access: yes, 2019
We consider an inverse medium problem in two- and three-dimensional cases. Namely, we investigate the problem of reconstruction of unknown compactly supported refractive index (contrast) from L-2 with a fixed positive wave number.
T. Tyni, Serov, V., Tyni, T., V. Serov
core   +1 more source

Generalized fractional calculus and some models of generalized counting processes

open access: yesModern Stochastics: Theory and Applications
Models of generalized counting processes time-changed by a general inverse subordinator are considered, their distributions are characterized, and governing equations for them are presented.
Khrystyna Buchak, Lyudmyla Sakhno
doaj   +1 more source

On the fractional mixed fractional Brownian motion Time Changed by Inverse alpha Stable Subordinator

open access: yes, 2023
A time-changed fractional mixed fractional Brownian motion by inverse alpha stable subordinator with index alpha in (0, 1) is an iterated process L constructed as the superposition of fractional mixed fractional Brownian motion N(a, b) and an independent
Mliki, Ezzedine
core  

Is an Apple an Orange? A Large Language Model Benchmark for Candidate Term Extraction and Subclass Decisions Against Upper Ontologies in Engineering and Materials Science

open access: yesAdvanced Engineering Materials, EarlyView.
Building machine‐readable vocabularies for materials science is slow, expert‐driven work. This study benchmarks 13 large language models on two of its first steps: finding candidate terms in engineering articles and deciding where they belong in a class hierarchy.
Thomas Bjarsch   +3 more
wiley   +1 more source

Model predictive control architecture for rotorcraft inverse simulation [PDF]

open access: yes, 2013
A novel inverse simulation scheme is proposed for applications to rotorcraft dynamic models. The algorithm adopts an architecture that closely resembles that of a model predictive control scheme, where the controlled plant is represented by a high-order ...
AVANZINI, Giulio   +5 more
core   +1 more source

OntOMat: Toward Ontology‐Based Product and Process Design Engineering and Optimization Solutions Fueling Circular Value Chains

open access: yesAdvanced Engineering Materials, EarlyView.
The OntOMat ontology establishes a structured framework for polymer matrix fiber reinforced composite materials, integrating manufacturing processes, characterization methods, and multiscale design through the VDI/VDE 3682 formalized process description standard.
Nicolas Christ   +19 more
wiley   +1 more source

Home - About - Disclaimer - Privacy