4k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Centre National de la Recherche ScientifiqueFR123 papers
- Centre for Research in Astrophysics of QuébecCA107 papers
- Université de MontréalCA52 papers
- University of TorontoCA52 papers
- Commissariat à l'Énergie Atomique et aux Énergies AlternativesFR51 papers
- Université Paris-SudFR43 papers
- McGill UniversityCA42 papers
- University College LondonGB40 papers
- Canadian Institute for Theoretical AstrophysicsCA35 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR35 papers
- Grand Accélérateur National d'Ions LourdsFR33 papers
- Space Telescope Science InstituteUS33 papers
45 papers · 1 filter
Conformal Differential Operator in Embedding Space and its Applications
Jean-François Fortin, Witold Skiba
We develop techniques useful for obtaining conformal blocks in embedding space. We construct a unique differential operator in embedding space and use it to construct a function th…
A scalable and efficient covariate selection criterion for mixed effects regression models with unknown random effects structure
Radu V. Craiu, Thierry Duchesne
We propose a new model selection criterion for mixed effects regression models that is computable when the model is fitted with a two-step method, even when the structure and the d…
Recovering the uniform boundary observability with spectral Legendre-Galerkin formulations of the 1-D wave equation
Ludovick Gagnon, José Urquiza
For a Legendre-Galerkin semi-discretization of the 1-D homogeneous wave equation, the high frequency components of the numerical solution prevent us from obtaining the boundary obs…
A Multi-State Conditional Logistic Regression Model for the Analysis of Animal Movement
Aurélien Nicosia, Thierry Duchesne, Louis-Paul Rivest +1
A multi-state version of an animal movement analysis method based on conditional logistic regression, called Step Selection Function (SSF), is proposed. In ecology SSF is developed…
Deep Outdoor Illumination Estimation
Yannick Hold-Geoffroy, Kalyan Sunkavalli, Sunil Hadap +2
We present a CNN-based technique to estimate high-dynamic range outdoor illumination from a single low dynamic range image. To train the CNN, we leverage a large dataset of outdoor…
Laser-Induced Electron Diffraction: Alignment Defects and Symmetry Breaking
T. T. Nguyen-Dang, M. Peters, J. Viau-Trudel +4
The fringe pattern that allows geometrical and orbital structure information to be extracted from LIED spectra of symmetric molecules is shown to reflect a symmetry conservation pr…
Laser-Induced Electron Diffraction: Inversion of Photoelectron Spectra for Molecular Orbital Imaging
R. Puthumpally-Joseph, J. Viau-Trudel, M. Peters +3
In this paper, we discuss the possibility of imaging molecular orbitals from photoelectron spectra obtained via Laser Induced Electron Diffraction (LIED) in linear molecules. This…
SPiKeS: Superpixel-Keypoints Structure for Robust Visual Tracking
François-Xavier Derue, Guillaume-Alexandre Bilodeau, Robert Bergevin
In visual tracking, part-based trackers are attractive since they are robust against occlusion and deformation. However, a part represented by a rectangular patch does not account…
Ultrafast pulse generation in a mode-locked Erbium chip waveguide laser
Champak Khurmi, Nicolas Bourbeau Hébert, Wen Qi Zhang +5
We report mode-locked ~1550 nm output of transform-limited ~180 fs pulses from a large mode-area (diameter ~ 50 μm) guided-wave erbium fluorozirconate glass laser. The passively mo…
Comparative Salt Tolerance Study of Some Acacia Species at Seed Germination Stage
Khalil Cherifi, El Houssein Boufous, Hassan Boubaker +1
Objective: The purpose of this study was to assess and compare the seed germination response of six Acacia species under different NaCl concentrations in order to explore opportuni…
A theoretical framework to predict the most likely ion path in particle imaging
Charles-Antoine Collins-Fekete, Lennart Volz, Stephen K. N. Portillo +2
In this work, a generic rigorous Bayesian formalism is introduced to predict the most likely path of any ion crossing a medium between two detection points. The path is predicted b…
The JCMT Gould Belt Survey: First results from SCUBA-2 observations of the Cepheus Flare Region
Kate Pattle, Derek Ward-Thompson, Jason M. Kirk +57
We present observations of the Cepheus Flare obtained as part of the James Clerk Maxwell Telescope (JCMT) Gould Belt Legacy Survey (GBLS) with the SCUBA-2 instrument. We produce a…
Discovery of peculiar periodic spectral modulations in a small fraction of solar type stars
E. F. Borra, E. Trottier
A Fourier transform analysis of 2.5 million spectra in the Sloan Digital Sky Survey was carried out to detect periodic spectral modulations. Signals having the same period were fou…
The Mass Dependence of Star Formation Histories in Barred Spiral Galaxies
Christian Carles, Hugo Martel, Sara L. Ellison +1
We performed a series of 29 gasdynamical simulations of disc galaxies, barred and unbarred, with various stellar masses, to study the impact of the bar on star formation history. U…
When does an old nova become a dwarf nova? Kinematics and age of the nova shell of the dwarf nova AT Cnc
Michael M. Shara, Laurent Drissen, Thomas Martin +1
The Z Cam-type dwarf nova AT Cnc displays a classical nova (CN) shell, demonstrating that mass transfer in cataclysmic binaries decreases substantially after a CN eruption. The hib…
Optimal fitting of gaussian-apodized or under-resolved emission lines in Fourier Transform spectra providing new insights on the velocity structure of NGC 6720
Thomas B. Martin, Simon Prunet, Laurent Drissen
An analysis of the kinematics of NGC 6720 is performed on the commissioning data obtained with SITELLE, the Canada-France-Hawaii Telescope's new imaging Fourier transform spectrome…
A Probability Density Function for Neutrino Masses and Mixings
Jean-François Fortin, Nicolas Giasson, Luc Marleau
The anarchy principle leading to the see-saw ensemble is studied analytically with the usual tools of random matrix theory. The probability density function for the see-saw ensembl…
Chemodynamic evolution of dwarf galaxies in tidal fields
David Williamson, Hugo Martel, Alessandro B. Romeo
The mass-metallicity relation shows that the galaxies with the lowest mass have the lowest metallicities. As most dwarf galaxies are in group environments, interaction effects such…
`imaka - a ground-layer adaptive optics system on Maunakea
Mark Chun, Olivier Lai, Douglas Toomey +12
We present the integration status for `imaka, the ground-layer adaptive optics (GLAO) system on the University of Hawaii 2.2-meter telescope on Maunakea, Hawaii. This wide-field GL…
Arithmetic properties of signed Selmer groups at non-ordinary primes
Jeffrey Hatley, Antonio Lei
We extend many results on Selmer groups for elliptic curves and modular forms to the non-ordinary setting. More precisely, we study the signed Selmer groups defined using the machi…
Differentially Private Model Selection with Penalized and Constrained Likelihood
Jing Lei, Anne-Sophie Charest, Aleksandra Slavkovic +2
In statistical disclosure control, the goal of data analysis is twofold: The released information must provide accurate and useful statistics about the underlying population of int…
Reaction and fusion cross sections for the near-symmetric system from to
L. Manduci, O. Lopez, A. Chbihi +13
\item[Background]Heavy-ion reactions from barrier up to Fermi energy. \item[Purpose]Reaction and fusion cross sections determination. Fusion reactions induced by project…
Inversion of Strong Field Photoelectron Spectra for Molecular Orbital Imaging
R. Puthumpally-Joseph, J. Viau-Trudel, M. Peters +3
Imaging structures at the molecular level is a fast developing interdisciplinary research field that spans across the boundaries of physics and chemistry. High spatial resolution i…
Euler systems for Hilbert modular surfaces
Antonio Lei, David Loeffler, Sarah Livia Zerbes
We construct an Euler system -- a compatible family of global cohomology classes -- for the Galois representations appearing in the geometry of Hilbert modular surfaces. If a conje…