Academic literature on the topic 'Global parametrization'

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Journal articles on the topic "Global parametrization"

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Shen, Hanxiao, Leyi Zhu, Ryan Capouellez, Daniele Panozzo, Marcel Campen, and Denis Zorin. "Which cross fields can be quadrangulated?" ACM Transactions on Graphics 41, no. 4 (2022): 1–12. http://dx.doi.org/10.1145/3528223.3530187.

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We describe a method for the generation of seamless surface parametrizations with guaranteed local injectivity and full control over holonomy. Previous methods guarantee only one of the two. Local injectivity is required to enable these parametrizations' use in applications such as surface quadrangulation and spline construction. Holonomy control is crucial to enable guidance or prescription of the parametrization's isocurves based on directional information, in particular from cross-fields or feature curves, and more generally to constrain the parametrization topologically. To this end we inv
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Campen, Marcel, David Bommes, and Leif Kobbelt. "Quantized global parametrization." ACM Transactions on Graphics 34, no. 6 (2015): 1–12. http://dx.doi.org/10.1145/2816795.2818140.

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Myles, Ashish, Nico Pietroni, and Denis Zorin. "Robust field-aligned global parametrization." ACM Transactions on Graphics 33, no. 4 (2014): 1–14. http://dx.doi.org/10.1145/2601097.2601154.

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Myles, Ashish, and Denis Zorin. "Controlled-distortion constrained global parametrization." ACM Transactions on Graphics 32, no. 4 (2013): 1–14. http://dx.doi.org/10.1145/2461912.2461970.

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Myles, Ashish, and Denis Zorin. "Global parametrization by incremental flattening." ACM Transactions on Graphics 31, no. 4 (2012): 1–11. http://dx.doi.org/10.1145/2185520.2185605.

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Bright, Alon, Edward Chien, and Ofir Weber. "Harmonic global parametrization with rational holonomy." ACM Transactions on Graphics 36, no. 4 (2017): 1–15. http://dx.doi.org/10.1145/3072959.3073646.

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Pietroni, Nico, Marco Tarini, Olga Sorkine, and Denis Zorin. "Global parametrization of range image sets." ACM Transactions on Graphics 30, no. 6 (2011): 1–10. http://dx.doi.org/10.1145/2070781.2024183.

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Du, Zhang Peng, Christoph Steindl, and 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 (2021): 713. http://dx.doi.org/10.3390/pr9040713.

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This paper proposes a new efficient two-step method for parametrizing control-oriented zero-dimensional physical polymer electrolyte membrane fuel cell (PEMFC) models with measured stack data. Parametrizations of these models are computationally intensive due to the numerous unknown parameters and the typically nonlinear, stiff model properties. This work reduces an existing model to decrease its stiffness for accelerated numerical simulations. Subdividing the parametrization into two consecutive subproblems (thermodynamic and electrochemical ones) reduces the solution space significantly. A p
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Veira, A., S. Kloster, N. A. J. Schutgens, and 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 (2015): 6695–744. http://dx.doi.org/10.5194/acpd-15-6695-2015.

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Abstract. Wildfires represent a major source for aerosols impacting atmospheric radiation, atmospheric chemistry and cloud micro-physical properties. Although former studies indicated that the height of the aerosol–radiation interaction crucially affects the overall climate impact, the importance of fire emission heights in particular remains to be quantified. In this study we use the general circulation model ECHAM6 extended by the aerosol module HAM2 to investigate the impact of wildfire emission heights on atmospheric long-range transport, Black Carbon (BC) concentrations and atmospheric ra
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Veira, A., S. Kloster, N. A. J. Schutgens, and 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 (2015): 7173–93. http://dx.doi.org/10.5194/acp-15-7173-2015.

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Abstract. Wildfires represent a major source for aerosols impacting atmospheric radiation, atmospheric chemistry and cloud micro-physical properties. Previous case studies indicated that the height of the aerosol–radiation interaction may crucially affect atmospheric radiation, but the sensitivity to emission heights has been examined with only a few models and is still uncertain. In this study we use the general circulation model ECHAM6 extended by the aerosol module HAM2 to investigate the impact of wildfire emission heights on atmospheric long-range transport, black carbon (BC) concentratio
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Dissertations / Theses on the topic "Global parametrization"

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Coiffier, Guillaume. "Global Parametrization Algorithms for Quadmeshing." Electronic Thesis or Diss., Université de Lorraine, 2023. http://www.theses.fr/2023LORR0273.

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Les maillages quadrangulés sont une structure de données centrale au domaine du traitement automatique de la géométrie, trouvant des applications en infographie comme en simulation numérique. De nos jours, les techniques de génération automatique calculant les maillages quads de meilleure qualité se basent sur le calcul d'une représentation à plat de la surface à mailler. Pour que des quadrilatères puissent être extraits, cette paramétrisation se doit d'être "sans couture", c'est-à-dire de respecter un ensemble de contraintes sur son bord et ses découpes. Cela demande une quantification en nom
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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/.

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A radiação solar global (RG) é uma das variáveis meteorológicas mais importantes para a compreensão de processos biofísicos em ferramentas ao suporte de decisão na agricultura. Atualmente, ela pode ser medida por diferentes sensores de custo relativamente baixos e, de modo geral, apenas estações meteorológicas instaladas mais recentemente registram RG. Na falta de dados observados, torna-se necessário estimá-la através de modelos tão simples quanto possível e baseados em dados de entrada de fácil obtenção. O presente trabalho teve por objetivo analisar dois modelos (Bristow e Campbell (1984) (
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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.

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Cette thèse se concentre sur le développement de méthodes de maillage hexaédrique adaptées aux simulations de grandes déformations en mécanique non-linéaire. Les méthodes de paramétrisation du domaine basées sur les champs de repère sont utilisées pour générer des maillages hexaédriques de haute qualité alignés sur les bords du domaine. Cependant, lors de grandes déformations, la qualité du maillage peut se dégrader et potentiellement bloquer la simulation. Cette thèse explore l'idée de déterminer une connectivité optimale pour les éléments du maillage en tenant compte des déformations prévues
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Book chapters on the topic "Global parametrization"

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Sudholt, Dirk. "Parametrization and Balancing Local and Global Search." In Handbook of Memetic Algorithms. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23247-3_5.

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Blanchi, Victor, Étienne Corman, Nicolas Ray, and Dmitry Sokolov. "Global Parametrization Based on Ginzburg-Landau Functional." In Lecture Notes in Computational Science and Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-76798-3_16.

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Brechbühler, Ch, G. Gerig, and O. Kübler. "Towards Representation of 3D Shape: Global Surface Parametrization." In Visual Form. Springer US, 1992. http://dx.doi.org/10.1007/978-1-4899-0715-8_9.

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Yigitsoy, Mehmet, Javad Fotouhi, and Nassir Navab. "Hough Space Parametrization: Ensuring Global Consistency in Intensity-Based Registration." In Medical Image Computing and Computer-Assisted Intervention – MICCAI 2014. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-10404-1_35.

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Jensen, Hector, and Costas Papadimitriou. "Parametrization of Reduced-Order Models Based on Global Interface Reduction." In Sub-structure Coupling for Dynamic Analysis. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12819-7_3.

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Götz, Georg. "The Large Scale Dynamics Are Reasonably Well Understood, Un-Certainty Lies in the Parametrization of Small-Scale Processes." In Global Change. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-23444-6_4.

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Peckham, Bruce B. "Global Parametrization and Computation of Resonance Surfaces for Periodically Forced Oscillators." In The IMA Volumes in Mathematics and its Applications. Springer New York, 2000. http://dx.doi.org/10.1007/978-1-4612-1208-9_17.

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Nikolaidou, Thalia, Felipe Nievinski, Kyriakos Balidakis, Harald Schuh, and Marcelo Santos. "PPP Without Troposphere Estimation: Impact Assessment of Regional Versus Global Numerical Weather Models and Delay Parametrization." In International Symposium on Advancing Geodesy in a Changing World. Springer International Publishing, 2018. http://dx.doi.org/10.1007/1345_2018_44.

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Ferrentino, Enrico, and Pasquale Chiacchio. "Redundancy Parametrization in Globally-Optimal Inverse Kinematics." In Advances in Robot Kinematics 2018. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-93188-3_6.

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Shem-Tov, Shachar, Guy Rosman, Gilad Adiv, Ron Kimmel, and Alfred M. Bruckstein. "On Globally Optimal Local Modeling: From Moving Least Squares to Over-parametrization." In Mathematics and Visualization. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-34141-0_17.

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Conference papers on the topic "Global parametrization"

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Ganacim, Francisco, André Maximo, and Luiz Velho. "Base mesh construction using global parametrization." In ACM SIGGRAPH 2012 Posters. ACM Press, 2012. http://dx.doi.org/10.1145/2342896.2343000.

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Pietroni, Nico, Marco Tarini, Olga Sorkine, and Denis Zorin. "Global parametrization of range image sets." In the 2011 SIGGRAPH Asia Conference. ACM Press, 2011. http://dx.doi.org/10.1145/2024156.2024183.

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Pedersen, Pauli, and Velaja B. Hammer. "On Global Design Description for Orientational Strength Optimization." In 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.

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Abstract The idea of global design description used frequently in shape optimization, is extended from curve to surface parametrization. The design is given as a linear combination of orthogonal functions. Application to orientational design of laminates for strength optimization is used as an example, but the technique is directly applicable to design also of thickness distribution. The advantages by this design description are many, including control on smoothness, control on slopes, and control on connections at the boundaries. This simplified parametrization of the design makes it possible
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Akhtar, Adeel, Sajid Saleem, and Steven L. Waslander. "Feedback Linearizing Controllers on SO(3) using a Global Parametrization." In 2020 American Control Conference (ACC). IEEE, 2020. http://dx.doi.org/10.23919/acc45564.2020.9147963.

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Csercsik, Dávid, and Eduard Jorswieck. "Optimal Parametrization of the Gale-Shapley Preallocation Method for Combinatorial Auction-based Channel Assignment." In 2024 6th Global Power, Energy and Communication Conference (GPECOM). IEEE, 2024. http://dx.doi.org/10.1109/gpecom61896.2024.10582715.

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Cirillo, Giuseppe I., Alexandre Mauroy, Ludovic Renson, Gaëtan Kerschen, and Rodolphe Sepulchre. "Global Parametrization of the Invariant Manifold Defining Nonlinear Normal Modes Using the Koopman Operator." In 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.

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Nonlinear normal modes of vibration have been the focus of many studies during the past years and different characterizations of them have been proposed. The present work focuses on damped systems, and considers nonlinear normal mode motions as trajectories lying on an invariant manifold, following the geometric approach of Shaw and Pierre. We provide a novel characterization of the invariant manifold, that rests on the spectral theory of the Koopman operator. A main advantage of the proposed approach is a global parametrization of the manifold, which avoids folding issues arising with the use
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KRAUSKOPF, B., and H. M. OSINGA. "GEODESIC PARAMETRIZATION OF GLOBAL INVARIANT MANIFOLDS OR WHAT DOES THE EQUADIFF 2003 POSTER SHOW?" In Proceedings of the International Conference on Differential Equations. WORLD SCIENTIFIC, 2005. http://dx.doi.org/10.1142/9789812702067_0068.

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Bošković, Jovan D. "A Nonlinear Parametrization for Stable Neural Network-Based Identification and Control." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0399.

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Abstract In this paper a stable neural network-based identification and control method for a class of first-order nonlinear plants is suggested. The method is based on neural networks built using a rational activation function. The paper discusses a method for stable adjustment of the network parameters and robustness issues in the resulting closed-loop system. The overall control scheme also includes a robust global controller that guarantees that the state of the system is confined to a region in the state space. The combination of robust global and neural network-based controllers appears t
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Kume, Keita, and Isao Yamada. "A Global Cayley Parametrization of Stiefel Manifold for Direct Utilization of Optimization Mechanisms Over Vector Spaces." In ICASSP 2021 - 2021 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, 2021. http://dx.doi.org/10.1109/icassp39728.2021.9414157.

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Loureiro, Juliana B. R., and Atila P. Silva Freire. "Law of the Wall Formulation for Separating Flow Over a Rough Hill." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-67382.

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Simple asymptotic arguments together with the mixing length hypothesis are used to derive a local analytical solution that accounts for adverse pressure gradient and separation effects for flows over rough walls. To model the wall roughness effects, a new parametrization method is advanced for the proposed solution in terms of the friction velocity (u∗), the local pressure gradient (∂xp) and the roughness length (z0). The near-wall solution and the parametrization function are validated against some DNS (smooth wall flow) and LDA (smooth and rough wall flows) data. The experiments were carried
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Reports on the topic "Global parametrization"

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Stratton, R. A., and A. J. Stirling. Examining the dynamical response to convective heating using an idealised version of the Met Office’s Unified Model. Met Office, 2024. http://dx.doi.org/10.62998/ouao1203.

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In global circulation models, poor coupling between convection parametrizations and the resolved dynamics poses significant obstacles to the representation of a range of convectively coupled atmospheric phenomena. Here we focus on one part of this coupling and ask whether the dynamical response to convection can adequately be captured when convection is parametrized only as heat and moisture sources to the resolved scale, (as is usually the case in convection parametrizations), and without including either mass, or vertical momentum transport terms. To this end, a ‘perfect’ convection parametr
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Seifert, Miriam, Claudia Hinrichs, Judith Hauck, and Christoph Völker. New / improved model parametrizations for responses in phytoplankton growth and calcification to changes in alkalinity implemented. OceanNets, 2023. http://dx.doi.org/10.3289/oceannets_d4.5.

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Global biogeochemical ocean models that are currently in place to investigate alkalinity enhancement at a global scale do usually not consider the effects of a changing carbonate system on phytoplankton. We introduce new and modified parameterizations of phytoplankton carbonate systems sensitivities into the biogeochemistry model REcoM. We then compare phytoplankton biomass and net primary production at different atmospheric CO2 concentrations to results from other deliverables (D5.3, 5.6, 5.7) based on experiments and models. The resilience of phytoplankton biomass towards low CO2 concentrati
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