Results 41 to 50 of about 114,062 (259)

Moment equations for the mixed formulation of the Hodge Laplacian with stochastic loading term [PDF]

open access: yes, 2014
We study the mixed formulation of the stochastic Hodge-Laplace problem defined on an n-dimensional domain D (n≥ 1), with random forcing term. In particular, we focus on the magnetostatic problem and on the Darcy problem in the three-dimensional case.
Bonizzoni F., Buffa A., Nobile F.
core   +4 more sources

Exploring cloud technology to create a virtual learning system

open access: yesCTE Workshop Proceedings, 2013
At the moment, the use of cloud technology is increasingly used in various areas of human activity. Creating a virtual private cloud is no longer a big problem and is used in practice more and more often.
K. S. Andronova, I. V. Levykin
doaj   +1 more source

Temporal moments of a tracer pulse in a perfectly parallel flow system [PDF]

open access: yes, 2002
Perfectly parallel groundwater transport models partition water flow into isolated one-dimensional stream tubes which maintain total spatial correlation of all properties in the direction of flow.
W. E. Bardsley, Bardsley, W. Earl
core   +1 more source

On the problem of optimal control of rotation axis reorientation of a spacecraft

open access: yesВестник Самарского университета: Естественнонаучная серия
Various variants of the formulation of optimal control problem of the reorientation of the axis of dynamic symmetry of the spacecraft (spacecraft), which is the axis of rotation, are considered.
Yury N. Gorelov, Lubov V. Kurganskaya
doaj   +1 more source

An Algorithm for Online Inertia Identification and Load Torque Observation via Adaptive Kalman Observer-Recursive Least Squares

open access: yesEnergies, 2018
In this paper, an on-line parameter identification algorithm to iteratively compute the numerical values of inertia and load torque is proposed. Since inertia and load torque are strongly coupled variables due to the degenerate-rank problem, it is hard ...
Ming Yang   +4 more
doaj   +1 more source

Quantum Science and the Search for Axion Dark Matter

open access: yesPRX Quantum, 2023
The dark-matter puzzle is one of the most important open problems in modern physics. The ultralight axion is a well-motivated dark-matter candidate, conceived to resolve the strong-CP problem of quantum chromodynamics.
Alexander O. Sushkov
doaj   +1 more source

The Role of “Adult‐Onset” Cancer Predisposition Genes in Pediatric Cancer: A Comprehensive Review

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Current literature estimates that 10% of pediatric cancers are caused by pathogenic or likely pathogenic (P/LP) germline variants in cancer predisposition genes (CPGs). Variants in CPGs thought to increase cancer risk exclusively during adulthood are referred to as “adult‐onset” CPGs (aoCPGs).
Maria Rozo   +5 more
wiley   +1 more source

LMI-Based Model Reduction by Moment Matching for Linear Time-Invariant Models [PDF]

open access: yes, 2021
This paper proposes an approach to model order reduction of stable linear time-invariant (LTI) models. The proposed approach extends time-domain moment matching by the minimization of the H∞ norm of the error dynamics characterizing the difference ...
M. F. Shakib   +18 more
core   +1 more source

Some practical suggestions for the scientific problem formulation and the objectives in the research project

open access: yesMedisur, 2017
One of the main difficulties for first-time researchers is writing the scientific problem and the objective of the research. The objective of this article is to provide an orientation on how to carry out the concrete moment of formulating the problem and,
Luis Alberto Corona Martínez   +2 more
doaj   +2 more sources

On the Size of the Safety Area around the Launch Trajectory of a Rocket

open access: yesAerospace, 2023
The safety zone around the flight path of a rocket is determined by the fall of debris in the case of an accidental explosion or commanded termination. The trajectory of a tumbling body in a vertical plane is determined by specifying the velocity, flight
Luiz M. B. C. Campos, Manuel J. S. Silva
doaj   +1 more source

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