Publications related to Parametric surface

Cortical morphology development in patients with 22q11.2 deletion syndrome at ultra-high risk of psychosis

Maude Schneider, Marie Schaer, Daniela Maria Zöller, Maria Carmela Padula

Background. Patients with 22q11.2 deletion syndrome (22q11DS) present a high risk of developing psychosis. While clinical and cognitive predictors for the conversion towards a full-blown psychotic disorder are well defined and largely used in practice, neu ...

CAMBRIDGE UNIV PRESS2018

3D non-linear MHD simulation of the MHD response and density increase as a result of shattered pellet injection

Olivier Sauter, Ambrogio Fasoli, Basil Duval, Stefano Coda, Jonathan Graves, Yves Martin, Duccio Testa, Patrick Blanchard, Alessandro Pau, Cristian Sommariva, Henri Weisen, Richard Pitts, Yann Camenen, Jan Horacek, Javier García Hernández, Marco Wischmeier, Nicola Vianello, Mikhail Maslov, Federico Nespoli, Yao Zhou, David Pfefferlé, Davide Galassi, Antonio José Pereira de Figueiredo, Jonathan Marc Philippe Faustin, Liang Yao, Dalziel Joseph Wilson, Hamish William Patten, Samuel Lanthaler, Bernhard Sieglin, Otto Asunta

The MHD response and the penetration of a deuterium shattered pellet into a JET plasma is investigated via the non-linear reduced MHD code JOREK with the neutral gas shielding (NGS) ablation model. The dominant MHD destabilizing mechanism by the injection ...

2018

System and Method for Defining Watertight and Locally Refinable Surfaces with Interpolatory Control Points

Michaël Unser, Daniel Andreas Schmitter, Masih Nilchian

A method for creating a watertight boundary between two graphical elements including the steps of displaying a first surface having a first shape and a second surface having a second shape on the display, an open space existing between the first surface an ...

2017

Extracting the interfacial free energy and anisotropy from a smooth fluctuating dividing surface

Michele Ceriotti, Gareth Aneurin Tribello, Edoardo Baldi

Interfaces between different materials and phases play a crucial role in many physical and chemical phenomena. When performing simulations of matter at the atomic scale, however, it is often not trivial to characterize these interfaces, particularly when t ...

Iop Publishing Ltd2017

Shape Projectors for Landmark-Based Spline Curves

Michaël Unser, Daniel Andreas Schmitter

We present a generic method to construct orthogonal projectors for two-dimensional landmark-based parametric spline curves. We construct vector spaces that define a geometric transformation (e.g., affine, similarity, and scaling) that is applied to a refer ...

2017

Reconstruction of 3D scattered data via radial basis functions by efficient and robust techniques

Alberto Crivellaro

We propose new algorithms to overcome two of the most constraining limitations of surface reconstruction methods in use. In particular, we focus on the large amount of data characterizing standard acquisitions by scanner and the noise intrinsically introdu ...

Elsevier Science Bv2017

Wavevector-Selective Nonlinear Plasmonic Metasurfaces

Olivier Martin, Jérémy Butet, Chen Yan, Kuang-Yu Yang

Electromagnetic metasurfaces with strong non- linear responses and angular selectivity could o ff er many new avenues for designing ultrathin optics components. We investigated the optical second harmonic generation from plasmonic metasurfaces composed of ...

2017

A Family of Smooth and Interpolatory Basis Functions for Parametric Curve and Surface Representation

Michaël Unser, Daniel Andreas Schmitter, Ricard Delgado Gonzalo

Interpolatory basis functions are helpful to specify parametric curves or surfaces that can be modified by simple user-interaction. Their main advantage is a characterization of the object by a set of control points that lie on the shape itself (i.e., curv ...

2016

MATHICSE Technical Report : Automatic reduction of PDEs defined on domains with variable shape

Andrea Manzoni, Federico Negri

In this work we propose a new, general and computationally cheap way to tackle parametrized PDEs defined on domains with variable shape when relying on the reduced basis method. We easily describe a domain by boundary parametrizations, and obtain domain de ...

MATHICSE2016

An Inner-Product Calculus for Periodic Functions and Curves

Michaël Unser, Daniel Andreas Schmitter, Anaïs Laure Marie-Thérèse Badoual

Our motivation is the design of efficient algorithms to process closed curves represented by basis functions or wavelets. To that end, we introduce an inner-product calculus to evaluate correlations and

L _{ 2 }

distances between such curves. In partic ...

2016

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Cortical morphology development in patients with 22q11.2 deletion syndrome at ultra-high risk of psychosis

3D non-linear MHD simulation of the MHD response and density increase as a result of shattered pellet injection

System and Method for Defining Watertight and Locally Refinable Surfaces with Interpolatory Control Points

Extracting the interfacial free energy and anisotropy from a smooth fluctuating dividing surface

Shape Projectors for Landmark-Based Spline Curves

Reconstruction of 3D scattered data via radial basis functions by efficient and robust techniques

Wavevector-Selective Nonlinear Plasmonic Metasurfaces

A Family of Smooth and Interpolatory Basis Functions for Parametric Curve and Surface Representation

MATHICSE Technical Report : Automatic reduction of PDEs defined on domains with variable shape

An Inner-Product Calculus for Periodic Functions and Curves

3D non-linear MHD simulation of the MHD response and density increase as a result of shattered pellet injection

Extracting the interfacial free energy and anisotropy from a smooth fluctuating dividing surface

Cortical morphology development in patients with 22q11.2 deletion syndrome at ultra-high risk of psychosis

Wavevector-Selective Nonlinear Plasmonic Metasurfaces

Shape Projectors for Landmark-Based Spline Curves

System and Method for Defining Watertight and Locally Refinable Surfaces with Interpolatory Control Points

Reconstruction of 3D scattered data via radial basis functions by efficient and robust techniques

MATHICSE Technical Report : Automatic reduction of PDEs defined on domains with variable shape

A Family of Smooth and Interpolatory Basis Functions for Parametric Curve and Surface Representation

An Inner-Product Calculus for Periodic Functions and Curves