A5052529038- Advanced Mathematical Physics Problems
- Advanced Mathematical Modeling in Engineering
- Numerical methods in inverse problems
- Differential Equations and Numerical Methods
- Differential Equations and Boundary Problems
- Stability and Controllability of Differential Equations
- Spectral Theory in Mathematical Physics
- Quantum chaos and dynamical systems
- Atmospheric and Environmental Gas Dynamics
- Methane Hydrates and Related Phenomena
- Advanced Numerical Methods in Computational Mathematics
- Sleep and Wakefulness Research
- Perfectionism, Procrastination, Anxiety Studies
- Navier-Stokes equation solutions
- Algebraic and Geometric Analysis
- Hydrocarbon exploration and reservoir analysis
- Theoretical and Computational Physics
- Numerical methods for differential equations
- Reservoir Engineering and Simulation Methods
- Healthcare Systems and Practices
- Electromagnetic Simulation and Numerical Methods
- Sleep and related disorders
- Computational Fluid Dynamics and Aerodynamics
- Coal Properties and Utilization
- EEG and Brain-Computer Interfaces
Laboratoire de Mathématiques
2019-2025
University of Ottawa
2018-2024
Université du littoral côte d'opale
2017-2023
Université Libre de Bruxelles
2017-2018
Royal Ottawa Mental Health Centre
2018
Universidad La Concordia
2017
Laboratoire de Mathématiques Jean Leray
2014-2016
Nantes Université
2016
Centre National de la Recherche Scientifique
2016
Accurate assessment of coal mine methane (CMM) emissions is a prerequisite for defining baselines and assessing the effectiveness mitigation measures. Such an endeavor jeopardized, however, by large uncertainties in current CMM estimates. Here, we assimilated atmospheric column concentrations observed TROPOMI space borne instrument high-resolution regional inversion to estimate Shanxi, province representing 15% global production. The are estimated be 8.5 ± 0.6 8.6 Tg CH4 yr-1 2019 2020,...
The behavioral and cognitive consequences of severe sleep deprivation are well understood. Surprisingly, relatively little is known about the neural correlates mild acute restriction on tasks that require sustained vigilance for prolonged periods time during day. Event-related potential (ERP) paradigms can reveal insight into underlying visual processing responding impaired with reduced alertness, as a consequence loss. Here, we investigated impact following at-home to better understand...
come from teaching and research institutions in France or abroad, public private centers.L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques niveau recherche, publiés ou non, émanant des établissements d'enseignement recherche français étrangers, laboratoires publics privés.
We consider linear one-dimensional strongly degenerate parabolic equations with measurable coefficients that may be or singular. Taking 0 as the point where strong degeneracy occurs, we assume coefficient a = ( x ) in principal part of equation is such function → / L p (0,1) for some > 1. After establishing spectral estimates corresponding elliptic problem, prove null controllable energy space by using one boundary control.
Accidental blowouts in oil and gas wells can result large prolonged methane emissions, which are often unreported when happening remote places. The rapid advancement of space-based methods for detecting quantifying plumes provides an essential tool uncovering these super-emission events. We use a range methane-sensitive satellites to document leak from well blowout Kazakhstan's Karaturun East field 2023. A dense time series observations multiple shows that the was active during 205 days....
In this article we are interested in energy estimates for hyperbolic initial boundary value problem when surface waves occur. More precisely, construct rigorous geometric optics expansions so-called elliptic and mixed frequencies show, using those expansions, that the amplification phenomenon is greater case of frequencies. As a consequence, result allow us to give partial classification weakly well-posed problems according region where uniform Kreiss Lopatinskii condition degenerates.
In this article we are interested in the rigorous construction of geometric optics expansions for hyperbolic corner problems.More precisely focus on case where self-interacting phases occur.Those proper to high frequency asymptotics problem and correspond rays that can display a homothetic pattern after suitable number reflections boundary.To construct framework, it is necessary solve new amplitude equation view initializing resolution WKB cascade.1. Introduction 1359 2.An overview...
In this article we are interested in the rigorous construction of WKB expansions for hyperbolic boundary value problems strip $\mathbb{R}^{d-1}\times [0,1]$ . geometry, a new inversibility condition has to be imposed construct expansion. This is due selfinteraction phenomenon which naturally appear when several conditions imposed. More precisely, by mean that some rays can regenerated themselves after rebounds against sides strip. not and already been studied Benoit (Geometric optics corner...
We propose a methodology for modelling methane intensities of Oil and Gas upstream activities different production profiles with diverse combinations region operation volumes associated. This leverages data sources, including satellite measurements public estimates emissions but also country-level oil gas company reporting. The obtained intensity models are compared to the reference companies' own reporting in order better understand types companies. results show that regions within have...
UNEP's Methane Alert and Response System (MARS) is a satellite-based system for the detection mitigation of methane emissions around world. As part International Emissions Observatory (IMEO), MARS first global connecting satellite to transparent notification processes intended trigger efforts. harnesses state-of-the-art data identify major emissions, activate its partners notify relevant stakeholders, support track progress toward mitigation.During year-long pilot phase, more than 600 plumes...
Research on perfectionism in graduate school found inconsistent associations between perfectionistic standards and psychological outcomes. Such unanticipated results led to the development of Model Excellencism Perfectionism (MEP) differentiate people who pursue high personal from those standards. Recent studies with undergraduate students showed that excellencism are distinct constructs differentially associated achievement In this study, our goal was offer first empirical test MEP a sample...
Suicidality in adolescents has been associated with emotional distress, stressful life events, relationship issues, and nightmares to name a few. This study explored the actual dream content mood at pre-sleep, during reported dream, morning 33 admitted hospital on account of suicide attempt. In all aspects, hospitalized were compared matched who had followed same protocol. accordance Continuity Threat Simulation theories formation, it was hypothesized that waking-life experiences suicidal...
In this article we are interested in the lower exponential strong well-posedness of hyperbolic boundary value problems set strip R d-1 × [0, 1].We assume that each component satisfies so-called uniform Kreiss-Lopatinskii condition (which is ensuring problem half space) and show due to selfinteraction phenomenon, an extra has be made ensure strip.This imposes a selfinteracting wave can not amplified by repetitive reflections against boundary.This very analogous one imposed [Osher, 1973] study...
In this article we are interested in the propagation speed for solutions of hyperbolic boundary value problems $WR$ class. Using Holmgren principle, show that is finite and able to give an explicit expression maximal speed. Due a phenomenon along specific class, can be larger than Cauchy problem. This consistent with previous examples litterature.