Concept
Sphere
Related publications (170)
Phase-field simulation of micropores constrained by the dendritic network during solidification
A phase-field model has been developed to describe the morphology of pores constrained by a dendritic solid network, and are forced to adopt complex non-spherical shapes. The distribution of the solid, liquid and gas phases was calculated with a multiphase ...
Elsevier2011Curved Folded Plate Timber Structures
Yves Weinand, Hans Ulrich Buri, Ivo Stotz
This work investigates the development of a Curved Origami Prototype made with timber panels. In the last fifteen years the timber industry has developed new, large size, timber panels. Composition and dimensions of these panels and the possibility of mill ...
IABSE-IASS2011Exotic droplets formed in microfluidic chips with uniform wettability
Martinus Gijs, Virendra Kumar Parashar, Josias Basil Wacker, Cédric Razaname, Guillaume Louis
Microdroplets are widely used in industrial processes. In the absence of external forces, droplets generally assume a spherical shape. Here, we present two methods to form non-spherical droplets in microfluidic glass chips. A uniformly hydrophobized chip h ...
Elsevier2011Convolution on the n-Sphere With Application to PDF Modeling
In this paper, we derive an explicit form of the convolution theorem for functions on an n-sphere. Our motivation comes from the design of a probability density estimator for n-dimensional random vectors. We propose a probability density function (pdf) est ...
Institute of Electrical and Electronics Engineers2010Ideal knots and other packing problems of tubes
This thesis concerns optimal packing problems of tubes, or thick curves, where thickness is defined as follows. Three points on a closed space curve define a circle. Taking the infimum over all radii of pairwise-distinct point triples defines the thickness ...
EPFL2010Computation and visualization of ideal knot shapes
We investigate numerical simulations and visualizations of the problem of tying a knot in a piece of rope. The goal is to use the least possible rope of a fixed, prescribed radius to tie a particular knot, e.g. a trefoil, a figure eight, and so on. The rop ...
EPFL2010Projective modules over the real algebraic sphere of dimension 3
Let A be a commutative noetherian ring of Krull dimension 3. We give a necessary and sufficient condition for A-projective modules of rank 2 to be free. Using this, we show that all the finitely generated projective modules over the algebraic real 3-sphere ...
2010Wavelet transform on manifolds: old and new approaches
Given a two-dimensional smooth manifold M and a bijective pro jection p from M on a fixed plane (or a subset of that plane), we explore systematically how a wavelet transform (WT) on M may be generated from a plane WT by the inverse projection. Examples whe ...
Elsevier2010Sampling-aware Polar Descriptors on the Sphere
We present a new descriptor and feature matching solution for omnidirectional images. The descriptor builds on the log-polar planar descriptors, but adapts to the specific geometry and non-uniform sampling density of spherical images. We further propose a ...
2010