Results 31 to 40 of about 1,103,397 (297)

RacoonWW1.3: A Monte Carlo program for four-fermion production at e^+ e^- colliders [PDF]

open access: yes, 2002
We present the Monte Carlo generator RacoonWW that computes cross sections to all processes e^+ e^- -> 4f and e^+ e^- -> 4f + gamma and calculates the complete O(alpha) electroweak radiative corrections to e^+ e^- -> W W -> 4f in the electroweak Standard
A Denner   +57 more
core   +2 more sources

Combining a Virtual Learning Tool and Onsite Study Visits of Four Conservation Sites in Europe

open access: yesGeoinformatics FCE CTU, 2011
The design and evaluation of virtual learning environments for construction and surveying students is presented in this paper; by combining virtual learning environment and on-site student surveys to model and replicate practice in the architectural ...
A. Chenaux   +5 more
doaj   +1 more source

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

open access: yesThe 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]

open access: yes, 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   +61 more
core   +2 more sources

Virtual element method for quasilinear elliptic problems [PDF]

open access: yesIMA 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.   +3 more
openaire   +3 more sources

3D Virtual Elements for Elastodynamic Problems [PDF]

open access: yesPAMM, 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   +3 more
openaire   +1 more source

Superconvergent gradient recovery for virtual element methods [PDF]

open access: yesMathematical 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

open access: yesResults 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

Deeply Virtual Compton Scattering: Facing Nonforward Distributions [PDF]

open access: yes, 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

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

open access: yesCalcolo
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

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