Results 1 to 10 of about 4,796,670 (284)

Uniform measures and uniform rectifiability [PDF]

open access: yesJournal of the London Mathematical Society, 2014
In this paper it is shown that if $\mu$ is an n-dimensional Ahlfors-David regular measure in $R^d$ which satisfies the so-called weak constant density condition, then $\mu$ is uniformly rectifiable. This had already been proved by David and Semmes in the
Tolsa, Xavier
core   +4 more sources

Hydrothermal Synthesis of Highly Uniform Chalcopyrite CuFeS2 Nanoparticles [PDF]

open access: yesArchives of Metallurgy and Materials, 2020
In this research work, high uniform CuFeS2 chalcopyrite with 20-40 nm particles were synthesized via a simple hydrothermal method. Different analysis were used to characterize the obtained product such as X-ray diffraction pattern (XRD), scanning ...
Mohammad Sabet   +2 more
doaj   +1 more source

The Uniform of Women’s Gymnasium Employees in the Vision of the Heads of Institutions in Kyiv Educational District (late 19th — early 20th century)

open access: yesКиївські історичні студії, 2023
Modern-day clothing is an all-encompassing marker of social identities. We deepen the usual political economic and socio-demographic analysis of Ukrainian society with a cultural one, which acquires a significant mobilizing resource.
Oksana Drach
doaj   +1 more source

Uniform and Competency-Based 3D Keypoint Detection for Coarse Registration of Point Clouds with Homogeneous Structure

open access: yesRemote Sensing, 2022
Recent advances in 3D laser scanner technology have provided a large amount of accurate geo-information as point clouds. The methods of machine vision and photogrammetry are used in various applications such as medicine, environmental studies, and ...
Fariborz Ghorbani   +3 more
doaj   +1 more source

Two-Dimensional Uniform and Non-Uniform Haar Wavelet Collocation Approach for a Class of Nonlinear PDEs

open access: yesComputation, 2023
In this paper, we introduce a novel approach employing two-dimensional uniform and non-uniform Haar wavelet collocation methods to effectively solve the generalized Burgers–Huxley and Burgers–Fisher equations.
Narendra Kumar   +2 more
doaj   +1 more source

New puncturing pattern for bad interleavers in turbo-codes [PDF]

open access: yesSerbian Journal of Electrical Engineering, 2009
This paper presents a new method of puncturing for worst interleavers. We study via simulation the effect of different combinations of tow puncturing patterns and three classes of interleavers on the performance of punctured turbo-coded systems.
Lakhdar Moulay Abdelmounaim   +3 more
doaj   +1 more source

Notes regarding classical Fourier series

open access: yesJournal of Numerical Analysis and Approximation Theory, 2023
A survey of some classical results from the theory of trigonomtrical series is presented, especially the case of Fourier series. Some new proofs are presented, and Riemann's theory of trigonometrical series is is given special attention.
Paul Bracken
doaj   +1 more source

Semi-Essential Submodules and Semi-Uniform Modules [PDF]

open access: yesKirkuk Journal of Science, 2009
In this work,we give generalizations for the concepts essential submodule and uniform module.We call an R-submodule N of M semi-essential if N∩P≠0 for each nonzero prime R- submodule P of M, and we call an R- module M semi - uniform if every ...
Ali S. Mijbass, Nada K. Abdullah
doaj   +1 more source

Facile Preparation of Au–Ag Composite Nanostructure for High-Sensitive and Uniform Surface-Enhanced Raman Spectroscopy

open access: yesPhotonics, 2023
Preparation of a high-sensitive and uniform surface-enhanced Raman spectroscopy (SERS) active substrate structure usually faces complex processes and high costs.
Wenjie Liu   +6 more
doaj   +1 more source

Uniform buttons within the context of the collection of the Waldes Museum of Buttons and Fasteners [PDF]

open access: yesMuzeológia a Kultúrne Dedičstvo, 2020
The study deals with uniform buttons in the collection of the Waldes Museum of Buttons and Fasteners in Prague-Vršovice, which was founded at the initiative of Prague industrialist and philanthropist Jindřich Waldes.
Hrušková, Kateřina
doaj   +1 more source

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