Results 1 to 10 of about 374,552 (274)

On Bilinear Narrow Operators [PDF]

open access: yesMathematics, 2021
In this article, we introduce a new class of operators on the Cartesian product of vector lattices. We say that a bilinear operator T:E×F→W defined on the Cartesian product of vector lattices E and F and taking values in a vector lattice W is narrow if ...
Marat Pliev   +2 more
doaj   +2 more sources

A Dynamic Localized Adjustable Force Field Method for Real-Time Assistive Non-Holonomic Mobile Robotics [PDF]

open access: yesInternational Journal of Advanced Robotic Systems, 2015
Providing an assistive navigation system that augments rather than usurps user control of a powered wheelchair represents a significant technical challenge. This paper evaluates an assistive collision avoidance method for a powered wheelchair that allows
Michael Gillham, Gareth Howells
doaj   +3 more sources

Wealth Distribution Under Power Trading Frequencies and Transitions of Agents [PDF]

open access: yesEntropy
We construct a kinetic model to investigate transactions among two populations from different countries. In our model, power collision kernels and a transfer operator are introduced into the Boltzmann equation.
Rongmei Sun, Shaoyong Lai, Xia Zhou
doaj   +2 more sources

On linear sections of orthogonally additive operators

open access: yesМатематичні Студії, 2022
Our first result asserts that, for linear regular operators acting from a Riesz space with the principal projection property to a Banach lattice with an order continuous norm, the $C$-compactness is equivalent to the $AM$-compactness. Next we prove that,
A. Gumenchuk, I. Krasikova, M. Popov
doaj   +1 more source

The “Second Derivative” of a Non-Differentiable Function and its Use in Interval Optimization Methods

open access: yesJournal of Telecommunications and Information Technology, 2023
The paper presents an idea to use weak derivatives in interval global optimization. It allows using the Newton operator to narrow domains of non-differentiable functions. Preliminary computational experiments are also presented.
Bartłomiej Jacek Kubica
doaj   +1 more source

Adaptive dating and fast proposals: Revisiting the phylogenetic relaxed clock model.

open access: yesPLoS Computational Biology, 2021
Relaxed clock models enable estimation of molecular substitution rates across lineages and are widely used in phylogenetics for dating evolutionary divergence times.
Jordan Douglas   +2 more
doaj   +1 more source

Radial symmetry for a generalized nonlinear fractional p-Laplacian problem

open access: yesNonlinear Analysis, 2021
This paper first introduces a generalized fractional p-Laplacian operator (–Δ)sF;p. By using the direct method of moving planes, with the help of two lemmas, namely decay at infinity and narrow region principle involving the generalized fractional p ...
Wenwen Hou   +3 more
doaj   +1 more source

Design Conformity of Indonesian-Made Mini Rice Combine Harvester and Anthropometry of Javanese Farmers

open access: yesAgritech, 2020
The combine harvester in Yogyakarta Province Special Region has a small size because it is used to harvest rice in a narrow area. The purpose of this study is to determine which parts of the mini combine harvester machine are not ergonomic and need to be
Guntarti Tatik Mulyati   +3 more
doaj   +1 more source

A study of local and non-local spatial densities in quantum field theory [PDF]

open access: yes, 2012
We use a one-dimensional model system to compare the predictions of two different 'yardsticks' to compute the position of a particle from its quantum field theoretical state.
Grobe, R.   +4 more
core   +3 more sources

Dual Scheimpflug imaging as a screening method for occludable angles-a comparison with gonioscopy [PDF]

open access: yesInternational Journal of Ophthalmology, 2019
AIM: To evaluate dual Scheimpflug analyzer (Galilei) as a screening method for the diagnostic of gonioscopically narrow anterior chamber angles (ACA).
Natália Maes Bessa   +4 more
doaj   +1 more source

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