Results 21 to 30 of about 128,247 (281)

Flat semimodules [PDF]

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2004
We introduce and investigate flat semimodules and k‐flat semimodules .We hope these concepts will have the same importance in semimodule theory as in the theory of rings and modules.
openaire   +2 more sources

Flat coordinates of flat Stäckel systems [PDF]

open access: yesApplied Mathematics and Computation, 2015
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Marciniak, Krzysztof, Blaszak, Maciej
openaire   +3 more sources

Wake Width: Discussion of Several Methods How to Estimate It by Using Measured Experimental Data

open access: yesEnergies, 2021
Several methods of defining and estimating the width of a turbulent wake are presented and tested on the experimental data obtained in the wake past an asymmetric prismatic airfoil NACA 64(3)-618, which is often used as tip profile of the wind turbines ...
Daniel Duda   +2 more
doaj   +1 more source

Flatness properties of acts over semigroups [PDF]

open access: yesCategories and General Algebraic Structures with Applications, 2021
In this paper we study flatness properties (pullback flatness, limit flatness, finite limit flatness) of acts over semigroups. These are defined by requiring preservation of certain limits from the functor of tensor multiplication by a given act. We give
Valdis Laan   +3 more
doaj   +1 more source

Flatness and Monge parameterization of two-input systems, control-affine with 4 states or general with 3 states [PDF]

open access: yes, 2005
This paper studies Monge parameterization, or differential flatness, of control-affine systems with four states and twocontrols. Some of them are known to be flat, and this implies admitting a Monge parameterization.
Aranda-Bricaire   +14 more
core   +5 more sources

RECYCLING RECOVERED WOOD-BASED MATERIALS. FLATNESS, MOR AND MOE OF PANELS MADE FROM RECOVERED WOODEN BASED MATERIALS [PDF]

open access: yesPro Ligno, 2015
The objective of the research was to study the mechanical properties of recovered solid wood and wood-based materials, to create new panels made of strips of recovered oak and spruce wood, particleboards and blockboards and to study their mechanical ...
Andrea DEÁK   +3 more
doaj  

Contrast Experiments in Dielectrophoresis Polishing (DEPP)/Chemical Mechanical Polishing (CMP) of Sapphire Substrate

open access: yesApplied Sciences, 2019
The broad applications of sapphire substrates in many fields warrants an urgent demand for a highly efficient and high precision polishing method for the sapphire substrates.
Tianchen Zhao   +5 more
doaj   +1 more source

Digital modeling geometrical and macrorough parameters of a highway [PDF]

open access: yesКомпьютерные исследования и моделирование, 2012
Original representation of statistical digital model of measurement of a macroroughness on a local site (to 15) consisting of determined (bias), correlated (standard periodic making and periodic deviations from flatness) and actually casual making ...
Andrei Viktorovich Kochetkov   +1 more
doaj   +1 more source

Generation of Flat Terahertz Noise by Mixing Incoherent Light Fields

open access: yesPhotonics, 2023
Terahertz (THz) noise sources play an irreplaceable role in testing THz devices and evaluating THz application systems, and the flatness of their radio frequency (RF) spectra is an important technical parameter.
Youwen Zhang   +7 more
doaj   +1 more source

Representability of Hom implies flatness [PDF]

open access: yes, 2003
Let $X$ be a projective scheme over a noetherian base scheme $S$, and let $F$ be a coherent sheaf on $X$. For any coherent sheaf $E$ on $X$, consider the set-valued contravariant functor $Hom_{E,F}$ on $S$-schemes, defined by $Hom_{E,F}(T) = Hom(E_T,F_T)$
Nitsure, Nitin
core   +3 more sources

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