Publications related to Perfect Simulation and Stationarity of a Class of Mobility Models

Ethics in Research

Science is in revolution. The formidable scientific and technological developments of the last century have dramatically transformed the way in which we conduct scientific research. The knowledge and applications that science produces has profound conseque ...

2019

Discrete-time regional pole-placement using convex approximations: Theory and application to a boost converter

Emilio Maddalena

The problem of allocating the closed-loop poles of linear systems in specific regions of the complex plane defined by discrete time-domain requirements is addressed. The resulting non-convex set is inner-approximated by a convex region described with linea ...

2019

On the convergence of stochastic primal-dual hybrid gradient

Volkan Cevher, Ahmet Alacaoglu

In this paper, we analyze the recently proposed stochastic primal-dual hybrid gradient (SPDHG) algorithm and provide new theoretical results. In particular, we prove almost sure convergence of the iterates to a solution and linear convergence with standard ...

2019

Conditional Gradient Methods via Stochastic Path-Integrated Differential Estimator

Volkan Cevher, Alp Yurtsever

We propose a class of novel variance-reduced stochastic conditional gradient methods. By adopting the recent stochastic path-integrated differential estimator technique (SPIDER) of Fang et al. (2018) for the classical Frank-Wolfe (FW) method, we introduce ...

2019

Dual-Band Circularly Polarized Transmitarray Antenna for Satellite Communications at (20 to 30) GHz

Juan Ramon Mosig, Maria Garcia Vigueras, Joana Rita Alves dos Santos Silva, Santiago Capdevila Cascante, Hamed Hasani

A novel dual-band polarization-independent transmitarray is introduced in this paper for communication systems in Ka-band. Thanks to its unit-cell topology, the transmitarray antenna demonstrates almost complete independent performance at two design freque ...

2019

A 1,3,2-Diazaphospholene-Catalyzed Reductive Claisen Rearrangement

Nicolai Cramer, Pavel Alexandrovich Donets, John Henry Reed, Solène Florie Miaskiewicz

1,3,2-Diazaphospholenes (DAPs) are an emerging class of organic hydrides. In this work, we exploited them as efficient catalysts for very mild reductive Claisen rearrangements. The method is tolerant towards a wide variety of functional groups and operates ...

2019

Stochastic Three-Composite Convex Minimization with a Linear Operator

Volkan Cevher

We develop a primal-dual convex minimization framework to solve a class of stochastic convex three-composite problem with a linear operator. We consider the cases where the problem is both convex and strongly convex and analyze the convergence of the propo ...

JMLR: W&CP2018

Non-local Functionals Related to the Total Variation and Connections with Image Processing

Hoài-Minh Nguyên

We present new results concerning the approximation of the total variation,

\int_{\Omega} |\nabla u|

, of a function

u

by non-local, non-convex functionals of the form $$ \Lambda_\delta u = \int_{\Omega} \int_{\Omega} \frac{\delta \varphi \big( |u(x) - ...

2018

GraaspBox: Enabling Mobile Knowledge Delivery into Underconnected Environments

Denis Gillet, Adrian Christian Holzer, Andrii Vozniuk

Interacting with knowledge in a timely fashion is critical for the success of humanitarian missions. At the same time, the places where humanitarian action is needed are often those where Internet connection is poor or not available at all, making digital ...

ACM2017

Shape from bandwidth: the 2-D orthogonal projection case

Martin Vetterli, Benjamin Bejar Haro, Adam James Scholefield

Could bandwidth—one of the most classic concepts in signal processing—have a new purpose? In this paper, we investigate the feasibility of using bandwidth to infer shape from a single image. As a first analysis, we limit our attention to orthographic proje ...

Ieee2017

Perfect Simulation and Stationarity of a Class of Mobility Models

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Ethics in Research

Discrete-time regional pole-placement using convex approximations: Theory and application to a boost converter

On the convergence of stochastic primal-dual hybrid gradient

Conditional Gradient Methods via Stochastic Path-Integrated Differential Estimator

Dual-Band Circularly Polarized Transmitarray Antenna for Satellite Communications at (20 to 30) GHz

A 1,3,2-Diazaphospholene-Catalyzed Reductive Claisen Rearrangement

Stochastic Three-Composite Convex Minimization with a Linear Operator

Non-local Functionals Related to the Total Variation and Connections with Image Processing

GraaspBox: Enabling Mobile Knowledge Delivery into Underconnected Environments

Shape from bandwidth: the 2-D orthogonal projection case

Ethics in Research

Stochastic Three-Composite Convex Minimization with a Linear Operator

Discrete-time regional pole-placement using convex approximations: Theory and application to a boost converter

GraaspBox: Enabling Mobile Knowledge Delivery into Underconnected Environments

Shape from bandwidth: the 2-D orthogonal projection case

Non-local Functionals Related to the Total Variation and Connections with Image Processing

A 1,3,2-Diazaphospholene-Catalyzed Reductive Claisen Rearrangement

Conditional Gradient Methods via Stochastic Path-Integrated Differential Estimator

Dual-Band Circularly Polarized Transmitarray Antenna for Satellite Communications at (20 to 30) GHz

On the convergence of stochastic primal-dual hybrid gradient