Results 31 to 40 of about 1,110,315 (292)

Mathematical model of analytical approach of comparative analysis of productivity of agricultural machinery when using visualization technology [PDF]

BIO Web of Conferences, 2022
The article discusses options for increasing the productivity of agricultural machinery, and also reveals the relationship between increasing its productivity by reducing the time of maintenance when using elements of virtual reality.
Solovev D.A., Chumakova S.V., Goncharov R.D.   +2 more
doaj   +1 more source

Virtual element method for quasilinear elliptic problems [PDF]

IMA Journal of Numerical Analysis, 2019
Abstract A virtual element method for the quasilinear equation $-\textrm{div} ({\boldsymbol \kappa }(u)\operatorname{grad} u)=f$ using general polygonal and polyhedral meshes is presented and analysed. The nonlinear coefficient is evaluated with the piecewise polynomial projection of the virtual element ansatz.
Cangiani A., Chatzipantelidis P., Diwan G., Georgoulis E. H.   +3 more
openaire   +3 more sources

Deeply Virtual Compton Scattering: Facing Nonforward Distributions [PDF]

, 1997
Applications of perturbative QCD to deeply virtual Compton scattering process require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix elements of quark and gluon operators. We
Radyushkin, Anatoly V.
core   +2 more sources

3D Virtual Elements for Elastodynamic Problems [PDF]

PAMM, 2021
AbstractA virtual element framework for nonlinear elastodynamics is outlined within this work. The virtual element method (VEM) can be considered as an extension of the classical finite element method. While the finite element method (FEM) is restricted to the usage of regular shaped elements, VEM allows to use non‐convex shaped elements for the ...
Cihan, Mertcan, Aldakheel, Fadi, Hudobivnik, Blaž, Wriggers, Peter   +3 more
openaire   +1 more source

WORKFLOW FOR AN EVIDENCE-BASED VIRTUAL RECONSTRUCTION: THE MARBLES OF THE CIBORIUM OF THE EARLY MEDIEVAL MONTE SORBO CHURCH [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2020
The paper presents a practical approach to define a hypothetical virtual reconstruction of the ciborium and pergola of Monte Sorbo's Church. The high accuracy of archaeological fragments, digitally acquired, allowed to hypothesize the entire sequences of
E. C. Giovannini
doaj   +1 more source

Nonforward Parton Distributions [PDF]

, 1997
Applications of perturbative QCD to deeply virtual Compton scattering and hard exclusive electroproduction processes require a generalization of usual parton distributions for the case when long-distance information is accumulated in nonforward matrix ...
A. Duncan, A. H. Mueller, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Efremov, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, A. V. Radyushkin, D. Amati, D. J. Gross, D. Müller, G. Altarelli, G. P. Korchemsky, G. R. Farrar, H. D. Politzer, H. Georgi, I. Halperin, I. I. Balitsky, J. Bartels, J. Blumlein, J. C. Collins, J. C. Collins, J. C. Collins, J. C. Collins, J. D. Bjorken, L. L. Frankfurt, L. V. Gribov, M. G. Ryskin, N. Christ, N. N. Bogolyubov, O. I. Zavialov, P. Hoodbhoy, P. Jain, R. K. Ellis, R. K. Ellis, R. L. Jaffe, R. P. Feynman, S. J. Brodsky, S. J. Brodsky, S. J. Brodsky, S. J. Brodsky, S. Libby, S. N. Nikolaev, S. V. Ivanov, S. V. Mikhailov, T. Appelquist, Th. Braunschweig, V. L. Chernyak, V. L. Chernyak, V. N. Gribov, V. V. Barakhovskii, X. Ji, X. Ji, X. Ji, Yu. L. Dokshitser   +61 more
core   +2 more sources

Superconvergent gradient recovery for virtual element methods [PDF]

Mathematical Models and Methods in Applied Sciences, 2019
Virtual element method is a new promising finite element method using general polygonal meshes. Its optimal a priori error estimates are well established in the literature. In this paper, we take a different viewpoint. We try to uncover the superconvergent property of virtual element methods by doing some local post-processing only on the degrees of ...
Guo, Hailong, Xie, Cong, Zhao, Ren
openaire   +3 more sources

Fully-automated topology interpreter for frame structures manufacturable from long products

Results in Engineering
Topology optimization (TO) is a powerful tool used across various disciplines, exemplary to create lightweight structures. But to utilize its full potential, post processing is required to reconstruct TO results as parametric and feature-based computer ...
Lukas Kömm, Kristin Paetzold-Byhain
doaj   +1 more source

When rational functions meet virtual elements: the lightning virtual element method

Calcolo
AbstractWe propose a lightning Virtual Element Method that eliminates the stabilisation term by actually computing the virtual component of the local VEM basis functions using a lightning approximation. In particular, the lightning VEM approximates the virtual part of the basis functions using rational functions with poles clustered exponentially close
Trezzi, M, Zerbinati, U
openaire   +2 more sources

Basic principles of mixed Virtual Element Methods [PDF]

ESAIM: Mathematical Modelling and Numerical Analysis, 2014
The aim of this paper is to give a simple, introductory presentation of the extension of the Virtual Element Method to the discretization of H(div)-conforming vector fields (or, more generally, of (n-1)-Cochains). As we shall see, the methods presented here can be seen as extensions of the so-called BDM family to deal with more general element ...
F Brezzi, RS Falk, LD Marini
openaire   +4 more sources