Littérature scientifique sur le sujet « Global parametrization »
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Articles de revues sur le sujet "Global parametrization"
Shen, Hanxiao, Leyi Zhu, Ryan Capouellez, Daniele Panozzo, Marcel Campen et Denis Zorin. « Which cross fields can be quadrangulated ? » ACM Transactions on Graphics 41, no 4 (juillet 2022) : 1–12. http://dx.doi.org/10.1145/3528223.3530187.
Texte intégralCampen, Marcel, David Bommes et Leif Kobbelt. « Quantized global parametrization ». ACM Transactions on Graphics 34, no 6 (4 novembre 2015) : 1–12. http://dx.doi.org/10.1145/2816795.2818140.
Texte intégralMyles, Ashish, Nico Pietroni et Denis Zorin. « Robust field-aligned global parametrization ». ACM Transactions on Graphics 33, no 4 (27 juillet 2014) : 1–14. http://dx.doi.org/10.1145/2601097.2601154.
Texte intégralMyles, Ashish, et Denis Zorin. « Controlled-distortion constrained global parametrization ». ACM Transactions on Graphics 32, no 4 (21 juillet 2013) : 1–14. http://dx.doi.org/10.1145/2461912.2461970.
Texte intégralMyles, Ashish, et Denis Zorin. « Global parametrization by incremental flattening ». ACM Transactions on Graphics 31, no 4 (5 août 2012) : 1–11. http://dx.doi.org/10.1145/2185520.2185605.
Texte intégralBright, Alon, Edward Chien et Ofir Weber. « Harmonic global parametrization with rational holonomy ». ACM Transactions on Graphics 36, no 4 (20 juillet 2017) : 1–15. http://dx.doi.org/10.1145/3072959.3073646.
Texte intégralPietroni, Nico, Marco Tarini, Olga Sorkine et Denis Zorin. « Global parametrization of range image sets ». ACM Transactions on Graphics 30, no 6 (décembre 2011) : 1–10. http://dx.doi.org/10.1145/2070781.2024183.
Texte intégralVeira, A., S. Kloster, N. A. J. Schutgens et J. W. Kaiser. « Fire emission heights in the climate system – Part 2 : Impact on transport, Black Carbon concentrations and radiation ». Atmospheric Chemistry and Physics Discussions 15, no 5 (6 mars 2015) : 6695–744. http://dx.doi.org/10.5194/acpd-15-6695-2015.
Texte intégralDu, Zhang Peng, Christoph Steindl et Stefan Jakubek. « Efficient Two-Step Parametrization of a Control-Oriented Zero-Dimensional Polymer Electrolyte Membrane Fuel Cell Model Based on Measured Stack Data ». Processes 9, no 4 (18 avril 2021) : 713. http://dx.doi.org/10.3390/pr9040713.
Texte intégralVeira, A., S. Kloster, N. A. J. Schutgens et J. W. Kaiser. « Fire emission heights in the climate system – Part 2 : Impact on transport, black carbon concentrations and radiation ». Atmospheric Chemistry and Physics 15, no 13 (1 juillet 2015) : 7173–93. http://dx.doi.org/10.5194/acp-15-7173-2015.
Texte intégralThèses sur le sujet "Global parametrization"
Coiffier, Guillaume. « Global Parametrization Algorithms for Quadmeshing ». Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0273.
Texte intégralQuadrangular meshes are a central data structure in the domain of geometry processing, with applications ranging from computer graphics to numerical simulation. Nowadays, techniques for automatic generation of quadmeshes with the highest quality results rely on a flat representation of the surface to mesh. For quads to be extracted from this so-called surface parametrization, it has to be seamless, that is to say satisfy a set of constraints on its boundary and its cuts. This needs a quantization as integer values of some of its degrees of freedom. These constraints are usually enforced progressively in a well-studied pipeline of operations, consisting in the computation of a smooth frame field, defining a singularity distribution with angle defects multiple of "pi/2", an integration phase from which a rotationally seamless parametrization is recovered, and a quantization step to determine the translational degrees of freedom. In this work, we focus on improving the steps of the parametrization-based quadmeshing pipeline. Using notions from differential geometry, we propose formulations of the problem that avoids the drawbacks of the current approaches. Firstly, we get rid of the mixed-integer optimization problems (known to be hard to solve) used in some steps. We replace them by the minimization of smooth (yet non-convex) objective functions. Secondly, we merge some of the pipeline's steps into a single optimization determining the corresponding degrees of freedom in one go. This allows for more versatility and user control over the final quadmesh, and avoids typical failure cases caused by the greedy approach of the current pipeline. These theoretical formulations of the seamless parametrization problems are accompanied by practical implementations where we demonstrate the viability of our approach on a vast array of CAD models. Finally, our work is theoretically generalizable to the more difficult problem of hexahedral meshing. As current parametrization-based approaches are only suitable for surfaces or simply fail at reliably producing results in the volume case, this opens the way for more robustness and qualitative hexmeshes
Ramos, João Paulo Augusto. « Calibração e avaliação de modelos para estimativa da radiação solar global para o Brasil ». Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/11/11152/tde-25082017-093906/.
Texte intégralGlobal solar radiation (RG) is one of the most important weather variables for understanding the biophysical processes in agricultural support tools. Currently, it can be measured by different low cost sensors. In Brazil, weather stations just recently start to record RG values. In the absence of long term observed data, models for estimating RG are needed, and the objective of this study was to analyse two Bristow and Campbell (1984) (BC) and Hargreaves and Samani (1982) (H) models for different regions in Brazil against a reference database of 32 places collected the National Institute of Space Research (INPE) through the coefficient of determination (R2), correlation coefficient (r), Willmott concordance index (d), modelling efficiency (E), and root mean square error (RMSE). They were also statistically optimized based on an iterative approach. Using the original parameters, the H model presented the best performance for all Brazilian regions, with values with RMSE of 4.24 MJ.m-2d-1 for a North region, 4.55 MJ.m-2d-1 for the Northeast Region, 4.39 MJ.m-2d-1 for a Midwest region, 4.61 MJ.m-2d-1 for a South region and 4.21 MJ.m-2d-1 for a Southeast region. After the optimization process, the best performance was given by the BC model for all Brazilian regions, with RMSE of 3.44 MJ.m-2d-1 for a North Region, 3.70 MJ.m-2d-1 for a Northeast region, 3.62 MJ.m-2d-1 for a Midwest region, 4.43 MJ.m-2d-1 for a South region and 3.50 MJ.m-2d-1 for a Southeast region. After the parameter optimization, mean values for KT for H model were 0.152 °C-0.5 for the North region, 0.173°C-0.5 for the Northeast region, 0.145°C-0.5 for the Midwest region, 0.163 °C-0.5 for the South region and 0.152°C-0.5 for the Southeast region. For the BC´s dimensionless parameters \"A\", \"B\" and \"C\" it was found the following values, respectively: 0.619, 0.026 and 1.845 for the North region, 0.694, 0.074 and 1.489 for the Northeast region, 0.635, 0.029 and 1.697 for the Midwest region, 0.671, 0.044 and 1.580 for the South region, and 0.702, 0.025 and 1.747 for the Southeast region.
Desobry, David. « Génération de maillages hexaédriques pour des simulations de grandes déformations ». Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0163.
Texte intégralThis thesis focuses on the development of hexahedral meshing methods suitable for large deformation simulations in non-linear mechanics. Domain parameterization methods based on frame fields are used to generate high-quality hexahedral meshes aligned with the domain boundaries. However, during large deformations, the mesh quality may degrade and potentially block the simulation. This thesis explores the idea of determining an optimal connectivity for the mesh elements while taking into account the anticipated deformations.In 2D, a complete pipeline is developed to tackle this challenge by combining previous work and scientific contributions. In 3D, contributions are made to approach this objective, particularly by controlling the boundary valences of hexahedral meshes produced from frame fields. The different parts of the thesis address the steps of large deformation numerical simulations, the advantages of global parameterization methods, the results of simulations on industrial 2D meshes, and contributions to improving the flexibility and robustness of the hexahedral meshing process.The ultimate goal is to reduce the time spent by engineers in generating an adequate mesh for a simulation by considering a priori information on the deformation to which the mesh and the object will be subjected
Chapitres de livres sur le sujet "Global parametrization"
Sudholt, Dirk. « Parametrization and Balancing Local and Global Search ». Dans Handbook of Memetic Algorithms, 55–72. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23247-3_5.
Texte intégralBlanchi, Victor, Étienne Corman, Nicolas Ray et Dmitry Sokolov. « Global Parametrization Based on Ginzburg-Landau Functional ». Dans Lecture Notes in Computational Science and Engineering, 251–62. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76798-3_16.
Texte intégralBrechbühler, Ch, G. Gerig et O. Kübler. « Towards Representation of 3D Shape : Global Surface Parametrization ». Dans Visual Form, 79–88. Boston, MA : Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-0715-8_9.
Texte intégralYigitsoy, Mehmet, Javad Fotouhi et Nassir Navab. « Hough Space Parametrization : Ensuring Global Consistency in Intensity-Based Registration ». Dans Medical Image Computing and Computer-Assisted Intervention – MICCAI 2014, 275–82. Cham : Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10404-1_35.
Texte intégralJensen, Hector, et Costas Papadimitriou. « Parametrization of Reduced-Order Models Based on Global Interface Reduction ». Dans Sub-structure Coupling for Dynamic Analysis, 49–65. Cham : Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12819-7_3.
Texte intégralGötz, Georg. « The Large Scale Dynamics Are Reasonably Well Understood, Un-Certainty Lies in the Parametrization of Small-Scale Processes ». Dans Global Change, 25–32. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23444-6_4.
Texte intégralPeckham, Bruce B. « Global Parametrization and Computation of Resonance Surfaces for Periodically Forced Oscillators ». Dans The IMA Volumes in Mathematics and its Applications, 385–405. New York, NY : Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1208-9_17.
Texte intégralNikolaidou, Thalia, Felipe Nievinski, Kyriakos Balidakis, Harald Schuh et Marcelo Santos. « PPP Without Troposphere Estimation : Impact Assessment of Regional Versus Global Numerical Weather Models and Delay Parametrization ». Dans International Symposium on Advancing Geodesy in a Changing World, 107–18. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/1345_2018_44.
Texte intégralFerrentino, Enrico, et Pasquale Chiacchio. « Redundancy Parametrization in Globally-Optimal Inverse Kinematics ». Dans Advances in Robot Kinematics 2018, 47–55. Cham : Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93188-3_6.
Texte intégralShem-Tov, Shachar, Guy Rosman, Gilad Adiv, Ron Kimmel et Alfred M. Bruckstein. « On Globally Optimal Local Modeling : From Moving Least Squares to Over-parametrization ». Dans Mathematics and Visualization, 379–405. Berlin, Heidelberg : Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34141-0_17.
Texte intégralActes de conférences sur le sujet "Global parametrization"
Ganacim, Francisco, André Maximo et Luiz Velho. « Base mesh construction using global parametrization ». Dans ACM SIGGRAPH 2012 Posters. New York, New York, USA : ACM Press, 2012. http://dx.doi.org/10.1145/2342896.2343000.
Texte intégralPietroni, Nico, Marco Tarini, Olga Sorkine et Denis Zorin. « Global parametrization of range image sets ». Dans the 2011 SIGGRAPH Asia Conference. New York, New York, USA : ACM Press, 2011. http://dx.doi.org/10.1145/2024156.2024183.
Texte intégralPedersen, Pauli, et Velaja B. Hammer. « On Global Design Description for Orientational Strength Optimization ». Dans ASME 1994 Design Technical Conferences collocated with the ASME 1994 International Computers in Engineering Conference and Exhibition and the ASME 1994 8th Annual Database Symposium. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/detc1994-0131.
Texte intégralAkhtar, Adeel, Sajid Saleem et Steven L. Waslander. « Feedback Linearizing Controllers on SO(3) using a Global Parametrization ». Dans 2020 American Control Conference (ACC). IEEE, 2020. http://dx.doi.org/10.23919/acc45564.2020.9147963.
Texte intégralCirillo, Giuseppe I., Alexandre Mauroy, Ludovic Renson, Gaëtan Kerschen et Rodolphe Sepulchre. « Global Parametrization of the Invariant Manifold Defining Nonlinear Normal Modes Using the Koopman Operator ». Dans ASME 2015 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/detc2015-46366.
Texte intégralKRAUSKOPF, B., et H. M. OSINGA. « GEODESIC PARAMETRIZATION OF GLOBAL INVARIANT MANIFOLDS OR WHAT DOES THE EQUADIFF 2003 POSTER SHOW ? » Dans Proceedings of the International Conference on Differential Equations. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812702067_0068.
Texte intégralBošković, Jovan D. « A Nonlinear Parametrization for Stable Neural Network-Based Identification and Control ». Dans ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0399.
Texte intégralKume, Keita, et Isao Yamada. « A Global Cayley Parametrization of Stiefel Manifold for Direct Utilization of Optimization Mechanisms Over Vector Spaces ». Dans ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2021. http://dx.doi.org/10.1109/icassp39728.2021.9414157.
Texte intégralLoureiro, Juliana B. R., et Atila P. Silva Freire. « Law of the Wall Formulation for Separating Flow Over a Rough Hill ». Dans ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67382.
Texte intégralMaithripala, D. H. S., et Jordan M. Berg. « Geometric PID Control for Almost-Global Stabilization of a Quadrotor With Parameter Error and Constant Disturbances ». Dans ASME 2014 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/dscc2014-5995.
Texte intégralRapports d'organisations sur le sujet "Global parametrization"
Seifert, Miriam, Claudia Hinrichs, Judith Hauck et Christoph Völker. New / improved model parametrizations for responses in phytoplankton growth and calcification to changes in alkalinity implemented. OceanNets, mars 2023. http://dx.doi.org/10.3289/oceannets_d4.5.
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