Filters








29 Hits in 7.5 sec

Optimal multi-degree reduction of triangular Bézier surfaces with corners continuity in the norm L2

Qian-Qian Hu, Guo-Jin Wang
2008 Journal of Computational and Applied Mathematics  
This paper derives an approximation algorithm for multi-degree reduction of a degree n triangular Bézier surface with corners continuity in the norm L 2 .  ...  This algorithm has a very simple and explicit expression in matrix form, i.e., the reduced matrix depends only on the degrees of the surfaces before and after degree reduction.  ...  Acknowledgments The authors thank to the referees for their helpful suggestions and comments. This work is supported by the Na-  ... 
doi:10.1016/j.cam.2007.04.022 fatcat:kprehi6fr5fblcu6ogtwhb6fra

The Finite Cell Method: A Review in the Context of Higher-Order Structural Analysis of CAD and Image-Based Geometric Models

Dominik Schillinger, Martin Ruess
2014 Archives of Computational Methods in Engineering  
In this review article, we first provide a concise introduction to the basics of the finite cell method.  ...  At the same time, the finite cell method achieves full accuracy, i.e. optimal rates of convergence, when the mesh is refined, and exponential rates of convergence, when the polynomial degree is increased  ...  degree p = 7. a Exact normal stresses σ x , b 4×4 p-version cells, c 10×10 Bézier cells Fig. 20 Convergence in energy norm for uniform p-refinement of the finite cell mesh of freedom.  ... 
doi:10.1007/s11831-014-9115-y fatcat:h47y5t7jivdnra6pznl7tdnija

Turbomachinery design by a swarm-based optimization method coupled with a CFD solver

Enrico Ampellio, Francesco Bertini, Andrea Ferrero, Francesco Larocca, Luca Vassio
2016 Advances in aircraft and spacecraft science  
Such applications are commonly simulation-based, in order to capture the physics of the phenomena under study.  ...  Interesting achievements in the considered test case are illustrated, highlighting the potential applicability of the proposed approach to other engineering problems.  ...  The simulations are stopped when the L2 norm of the residuals drops down a fixed tolerance (10e-5).  ... 
doi:10.12989/aas.2016.3.2.149 fatcat:yggfskqw3rclfbhcashuiurrau

Inference of Stochastic Dynamical Systems from Cross-Sectional Population Data [article]

Anastasios Tsourtis, Yannis Pantazis, Ioannis Tsamardinos
2020 arXiv   pre-print
In this work, we deduce and then computationally estimate the Fokker-Planck equation which describes the evolution of the population's probability density, based on stochastic differential equations.  ...  Inferring the driving equations of a dynamical system from population or time-course data is important in several scientific fields such as biochemistry, epidemiology, financial mathematics and many others  ...  We would like to thank Georgios Papoutsoglou for his helpful comments.  ... 
arXiv:2012.05055v1 fatcat:unybb2hi3bbq7pt6p6mrgq6sqa

Modelling and traceability for computationally-intensive precision engineering and metrology

J.M. Linares, G. Goch, A. Forbes, J.M. Sprauel, A. Clément, F. Haertig, W. Gao
2018 CIRP annals  
In contrast to measurements of the dimensions of machined parts realized by machine tools and characterized by CMMs, software results are not fully traceable and certified.  ...  Based on the works of National Metrology Institutes, the problem of software traceability will also be discussed. Some prospects for this complex task will finally be suggested.  ...  We also would like to give thanks to Tyler Estler (NIST) for his valuable comments.  ... 
doi:10.1016/j.cirp.2018.05.003 fatcat:agtlmplwvzak7kdltepugnnpqy

Certifying Unstability of Switched Systems Using Sum of Squares Programming

Benoît Legat, Pablo Parrilo, Raphaël Jungers
2020 SIAM Journal of Control and Optimization  
In a similar manner as for the linear case, we can compute a balanced realization from these two empirical Gramians.  ...  Acknowledgements This work was supported in part by the Fund for Scientific Research (FWO-Vlaanderen), by the Flemish Government (Methusalem), the Belgian Government through the Interuniversity Poles of  ...  L2 norm of the error, i.e.  ... 
doi:10.1137/18m1173460 fatcat:ytlzbwk7vbampbuyo6snenz33m

Advances in Electron Microscopy with Deep Learning

Jeffrey Ede
2020 Zenodo  
This version of my thesis is typeset for online dissemination to improve readability, whereas the thesis submitted to the University of Warwick in support of my application for the degree of Doctor of  ...  Philosophy in Physics is typeset for physical printing and binding.  ...  In addition, part of the text in section 1.2 is adapted from our earlier work with permission 201 under a Creative Commons Attribution 4.0 73 license.  ... 
doi:10.5281/zenodo.4598227 fatcat:hm2ksetmsvf37adjjefmmbakvq

Advances in Electron Microscopy with Deep Learning

Jeffrey Ede
2020 Zenodo  
This version of my thesis is typeset for online dissemination to improve readability, whereas the thesis submitted to the University of Warwick in support of my application for the degree of Doctor of  ...  Philosophy in Physics is typeset for physical printing and binding.  ...  In addition, part of the text in section 1.2 is adapted from our earlier work with permission 201 under a Creative Commons Attribution 4.0 73 license.  ... 
doi:10.5281/zenodo.4591029 fatcat:zn2hvfyupvdwlnvsscdgswayci

Advances in Electron Microscopy with Deep Learning

Jeffrey Ede
2020 Zenodo  
This copy of my thesis is typeset for online dissemination to improve readability, whereas the thesis submitted to the University of Warwick in support of my application for the degree of Doctor of Philosophy  ...  in Physics will be typeset for physical printing and binding.  ...  In addition, part of the text in section 1.2 is adapted from our earlier work with permission 201 under a Creative Commons Attribution 4.0 73 license.  ... 
doi:10.5281/zenodo.4399748 fatcat:63ggmnviczg6vlnqugbnrexsgy

Advances in Electron Microscopy with Deep Learning

Jeffrey Ede
2020 Zenodo  
This copy of my thesis is typeset for online dissemination to improve readability, whereas the thesis submitted to the University of Warwick in support of my application for the degree of Doctor of Philosophy  ...  in Physics will be typeset for physical printing and binding.  ...  In addition, part of the text in section 1.2 is adapted from our earlier work with permission 201 under a Creative Commons Attribution 4.0 73 license.  ... 
doi:10.5281/zenodo.4413249 fatcat:35qbhenysfhvza2roihx52afuy

Advances in Electron Microscopy with Deep Learning

Jeffrey Ede
2020 Zenodo  
This copy of my thesis is typeset for online dissemination to improve readability, whereas the thesis submitted to the University of Warwick in support of my application for the degree of Doctor of Philosophy  ...  in Physics will be typeset for physical printing and binding.  ...  In addition, part of the text in section 1.2 is adapted from our earlier work with permission 201 under a Creative Commons Attribution 4.0 73 license.  ... 
doi:10.5281/zenodo.4429792 fatcat:qs6yuapx4vdbdmwna7ix7nnwty

Advances in Electron Microscopy with Deep Learning

Jeffrey Ede
2020 Zenodo  
This copy of my thesis is typeset for online dissemination to improve readability, whereas the thesis submitted to the University of Warwick in support of my application for the degree of Doctor of Philosophy  ...  in Physics will be typeset for physical printing and binding.  ...  In addition, part of the text in section 1.2 is adapted from our earlier work with permission 201 under a Creative Commons Attribution 4.0 73 license.  ... 
doi:10.5281/zenodo.4415407 fatcat:6dejwzzpmfegnfuktrld6zgpiq

Computational Design and Evaluation Methods for Empowering Non-Experts in Digital Fabrication [article]

Nurcan Gecer Ulu
2020 arXiv   pre-print
Effective design assessment, the second key aspect, becomes critical for problems in which computational solutions do not exist.  ...  In line with this idea, producing complex 3D surfaces from flat 2D sheets by exploiting the concept of buckling beams has also been explored.  ...  We finally define F g to be the L2 norm of the resultant force vector [F x g F y g F z g ] and define the grip force constraint as: E GT 1 ≡ F lb g − F g < 0, E GT 2 ≡ F g − F ub g < 0, (4.8) where F lb  ... 
arXiv:2006.05921v1 fatcat:c4bzijwdtrb5hc5jg3bn6izzxa

A Knowledge Integration Framework for 3D Shape Reconstruction

Eugen Funk
2016
number of 3D data points in sampling object shapes within an environment, but crucially do not provide any intrinsic information about the environment in which the robots operate with.  ...  This means unstructured 3D samples must be processed by application-specific models to enable a robot, for instance, to detect and identify objects and infer the scene geometry for path-planning more efficiently  ...  In the case of the L2 norm, both would receive values larger than in the Lq case.  ... 
doi:10.21954/ou.ro.0000ef57 fatcat:5n43pfvumzbsnclsoqrviw7wu4

Shape Parameterization and Constrained Aerodynamic Οptimization. Applications Including Turbomachines [article]

Flavio Gagliardi, National Technological University Of Athens
2020
In this dissertation, gradient-based and gradient-free numerical techniques are used to solve constrained shape optimization problems.  ...  used in CAD software. vii viii ABSTRACT Specifically, in the turbomachinery field, this dissertation uses and extends software for modeling turbomachinery blade rows.  ...  This strategy allows for a noticeable reduction in the computational cost of displacing a mesh.  ... 
doi:10.26240/heal.ntua.20081 fatcat:n7ui64tgz5fgbcqyodq7vgvkwa
« Previous Showing results 1 — 15 out of 29 results