Publications associées à Espace localement compact

Design of Compact Air-Vias-Perforated SIW Horn Antenna With Partially Detached Broad Walls

A novel substrate-integrated waveguide (SIW) horn antenna with partially detached broad walls is designed and analyzed. The conventional SIW horn antenna suffers from narrow-operating bandwidth, which mainly results from the mismatch at the horn aperture b ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Effects of urban compactness on solar energy potential

Jean-Louis Scartezzini, Jérôme Henri Kämpf, Dan Assouline, Nahid Mohajeri Pour Rayeni, Govinda Upadhyay

Compactness is a major urban form parameter that affects the accessibility of solar energy in the built environment. Here we explore the relation between various compactness indicators and solar potential in the 16 neighbourhoods (11,418 buildings) constit ...

Pergamon-Elsevier Science Ltd2016

Sequences with Minimal Time-Frequency Uncertainty

Martin Vetterli, Reza Parhizkar, Yann Barbotin

A central problem in signal processing and communications is to design signals that are compact both in time and frequency. Heisenberg's uncertainty principle states that a given function cannot be arbitrarily compact both in time and frequency, defining a ...

Elsevier2015

Amenable hyperbolic groups

Nicolas Monod

We give a complete characterization of the locally compact groups that are nonelementary Gromov-hyperbolic and amenable. They coincide with the class of mapping tori of discrete or continuous one-parameter groups of compacting automorphisms. We moreover gi ...

European Mathematical Soc2015

On linear and quadratic Lipschitz bounds for twice continuously differentiable functions

Dominique Bonvin, Grégory François, Gene Bunin

Lower and upper bounds for a given function are important in many mathematical and engineering contexts, where they often serve as a base for both analysis and application. In this short paper, we derive piecewise linear and quadratic bounds that are state ...

arXiv:1406.3991 [math.OC]2014

Compact Low-Power Cortical Recording Architecture for Compressive Multichannel Data Acquisition

Pierre Vandergheynst, Alexandre Schmid, Mahsa Shoaran, Mahdad Hosseini Kamal

This paper introduces an area- and power-efficient approach for compressive recording of cortical signals used in an implantable system prior to transmission. Recent research on compressive sensing has shown promising results for sub-Nyquist sampling of sp ...

2014

Broadcasting oneself: Visual Discovery of Vlogging Styles

Daniel Gatica-Perez, Oya Aran, Joan Isaac Biel Tres

We present a data-driven approach to discover different styles that people use to present themselves in online video blogging (vlogging). By vlogging style, we denote the combination of conscious and unconscious choices that the vlogger made during the pro ...

2014

L-2-Betti numbers and Plancherel measure

Henrik Densing Petersen, Alain Valette

We compute L-2-Betti numbers of postliminal, locally compact, unimodular groups in terms of ordinary dimensions of reduced cohomology with coefficients in irreducible unitary representations and the Plancherel measure. This allows us to compute the L-2-Bet ...

Academic Press Inc Elsevier Science2014

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Espace localement compact

Design of Compact Air-Vias-Perforated SIW Horn Antenna With Partially Detached Broad Walls

Effects of urban compactness on solar energy potential

Sequences with Minimal Time-Frequency Uncertainty

Amenable hyperbolic groups

Maximizing the displacement of compact planar dielectric elastomer actuators

On linear and quadratic Lipschitz bounds for twice continuously differentiable functions

Compact Low-Power Cortical Recording Architecture for Compressive Multichannel Data Acquisition

Moduli spaces of toric manifolds

Broadcasting oneself: Visual Discovery of Vlogging Styles

L-2-Betti numbers and Plancherel measure

Graph Chatbot

Chattez avec Graph Search

Design of Compact Air-Vias-Perforated SIW Horn Antenna With Partially Detached Broad Walls

Broadcasting oneself: Visual Discovery of Vlogging Styles

L-2-Betti numbers and Plancherel measure

Effects of urban compactness on solar energy potential

Maximizing the displacement of compact planar dielectric elastomer actuators

Moduli spaces of toric manifolds

Compact Low-Power Cortical Recording Architecture for Compressive Multichannel Data Acquisition

Amenable hyperbolic groups

On linear and quadratic Lipschitz bounds for twice continuously differentiable functions

Sequences with Minimal Time-Frequency Uncertainty