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MATHICSE Technical Report : Perturbation of higher-order singular values

Daniel Kressner, André Uschmajew

The higher-order singular values for a tensor of order d are defined as the singular values of the d different matricizations associated with the multilinear rank. When d≥3, the singular values are generally different for different matricizations but not c ...

MATHICSE2016

Distinguishing knowledge integration gains in evolution education through concept map network analysis

Beat Adrian Schwendimann

Understanding how evolutionary changes happen requires connecting genotype and phenotype level concepts. This study uses a form of concept map, called Knowledge Integration Map (KIM), as a learning and assessment tool to support and assess connecting conce ...

2016

El camino no es el camino. Some reflexions on the Valparaiso School and its architectural teaching

Patricia Guaita, Cornelia Dominique Tapparelli Portilla Kawamura

The teaching of architecture at the School of Architecture and Design at the Pontifical Catholic University of Valparaiso (the Valparaiso School) has very often been described as ‘very unusual’. One of the most exceptional and most often remarked upon aspe ...

EPFL Press2015

Divergence-form operators with stationary random coefficients homogenize over large scales. We investigate the effect of certain perturbations of the medium on the homogenized coefficients. The perturbations considered are rare at the local level, but when ...

Gauthier-Villars/Editions Elsevier2015

Audio Steganography using Convex Demixing

Yann Mikaël Schoenenberger

In the first part, we first introduce steganography (in chapter 1) not in the usual context of information security, but as a method to piggyback data on top of some content. We then focus on audio steganography and propose a new steganographic scheme in c ...

2014

Distributed birefringence measurements using polarisation correlation in phase-sensitive OTDR

Luc Thévenaz, Marcelo Alfonso Soto Hernandez, Xin Lu

A method based on phase-sensitive OTDR is proposed for distributed birefringence measurements along optical fibres. A high accuracy is experimentally demonstrated, enabling the characterisation of single-mode fibres with a minimum detectable birefringence ...

IEEE2014

Studying edge geometry in transiently turbulent shear flows

Tobias Schneider

In linearly stable shear flows at moderate Reynolds number, turbulence spontaneously decays despite the existence of a codimension-one manifold, termed the edge, which separates decaying perturbations from those triggering turbulence. We statistically anal ...

Cambridge University Press2014

Heated mask

Jürgen Brugger, Andreea Veronica Savu, Shenqi Xie

The invention concerns a method and a device wherein a stencil is provided with an integrated microhotplate on the stencil membrane to prevent aperture clogging, whereby the stencil can be locally heated up in order to minimize material condensation, remov ...

2013

During the commissioning of the CERN Proton Synchrotron multiturn extraction, tests with different beam intensities were performed in order to probe the behavior of resonance crossing in the presence of possible space charge effects. The initial beam inten ...

American Physical Society2013

AUTOMATIC FLIGHT MODE

Cyril Botteron, Phillip Tomé, Aleksandar Jovanovic, Jérôme Leclère, Youssef Tawk

The invention relates to an electronic device which is capable of being transported on an airplane and includes a radio transmitter. The invention comprises: a) collecting acceleration data and/or precession data from the electronic device; b) estimating p ...

2013