Pierre Fortin

ORCID: 0000-0003-3117-9122
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About
Contact & Profiles
Research Areas
  • Social Sciences and Governance
  • Economic Theory and Policy
  • Health, Medicine and Society
  • Canadian Policy and Governance
  • Parallel Computing and Optimization Techniques
  • Education, sociology, and vocational training
  • Healthcare Systems and Practices
  • Monetary Policy and Economic Impact
  • Electromagnetic Scattering and Analysis
  • French Urban and Social Studies
  • Employment and Welfare Studies
  • Numerical Methods and Algorithms
  • Economic Growth and Productivity
  • Labor market dynamics and wage inequality
  • European Socioeconomic and Political Studies
  • Fiscal Policy and Economic Growth
  • Canadian Identity and History
  • Global Financial Crisis and Policies
  • Distributed and Parallel Computing Systems
  • Advanced Data Storage Technologies
  • Social Policies and Family
  • Aging, Elder Care, and Social Issues
  • Electromagnetic Simulation and Numerical Methods
  • Topological and Geometric Data Analysis
  • Multiculturalism, Politics, Migration, Gender

Centre de Recherche en Informatique
2019-2024

Université de Lille
2019-2024

École Centrale de Lille
2019-2024

Centre National de la Recherche Scientifique
2010-2024

Université du Québec à Montréal
2005-2022

Sorbonne Université
2010-2021

Laboratoire de Recherche en Informatique de Paris 6
2011-2021

Laboratoire Leprince-Ringuet
2010-2019

Université de Montréal
1978-2018

Université Paris Cité
2011-2016

Analysis is presented for 15 months of data taken with the Large Area Telescope (LAT) on Fermi Gamma-ray Space 11 non-blazar active galactic nuclei (AGNs), including seven FRI radio galaxies and four FRII sources consisting two steep spectrum quasars. The broad line galaxy 3C 120 reported here as a γ-ray source first time. analysis based directional associations LAT in 3CR, 3CRR, MS4 (collectively referred to 3C-MS) catalogs. Seven eleven associated 3C-MS have spectral indices larger than...

10.1088/0004-637x/720/1/912 article EN The Astrophysical Journal 2010-08-13

10.2307/136214 article EN Canadian Journal of Economics/Revue canadienne d économique 1996-11-01

Objective: In a study conducted in New Brunswick and Newfoundland Labrador, we examined the economic impact on families caring for child with cancer. Methods: We undertook semi-structured interviews 28 French English diagnosed cancer last 10 years. Results: Families who care incur considerable costs during diagnostic, treatment, follow-up phases of disease. Four major themes emerged from this qualitative as contributing factors these expenses: necessary travel; loss income because reduction...

10.3747/co.v15i4.260 article EN cc-by Current Oncology 2008-08-01

This paper presents a new algorithm for the fast, shared memory multi-core computation of augmented merge trees on triangulations. In contrast to most existing parallel algorithms, our technique computes trees. augmentation is required enable full extent tree based applications, including data segmentation. Our approach completely revisits traditional, sequential re-formulate as set independent local tasks Fibonacci heaps. results in superior time performance practice, well thanks OpenMP...

10.1109/ldav.2017.8231846 preprint EN 2017-10-01

This paper presents a new algorithm for the fast, shared memory multi-threaded computation of contour trees on tetrahedral meshes. In contrast to previous algorithms, our technique computes augmented tree. Such an augmentation is required enable full extent tree based applications, including instance data segmentation. Our approach relies range-driven domain partitioning. We show how exploit such partitioning rapidly compute forests. also forests can be efficiently turned into output report...

10.1109/ldav.2016.7874333 preprint EN 2016-10-01

This paper presents a new algorithm for the fast, shared memory, multi-core computation of augmented contour trees on triangulations. In contrast to most existing parallel algorithms our technique computes trees, enabling full extent tree based applications including data segmentation. Our approach completely revisits traditional, sequential re-formulate all steps as set independent local tasks. includes procedure Fibonacci heaps join and split two intermediate structures used compute tree,...

10.1109/tpds.2019.2898436 article EN IEEE Transactions on Parallel and Distributed Systems 2019-02-09

This system paper documents the technical foundations for extension of Topology ToolKit (TTK) to distributed-memory parallelism with Message Passing Interface (MPI). While several recent papers introduced topology-based approaches environments, these were reporting experiments obtained tailored, mono-algorithm implementations. In contrast, we describe in this a versatile approach (supporting both triangulated domains and regular grids) support topological analysis pipelines, i.e., sequence...

10.1109/tvcg.2024.3390219 article EN IEEE Transactions on Visualization and Computer Graphics 2024-04-17

10.1016/0014-2921(89)90039-1 article EN European Economic Review 1989-01-01

This paper presents, to the best of our knowledge, first parallel algorithm for computation augmented Reeb graph piecewise linear scalar data. Such graphs have a wide range applications , including contour seeding and feature based segmentation. Our approach targets shared-memory multi-core workstations. For this, it completely revisits optimal, but sequential, algorithm, which is capable handing data in arbitrary dimension with optimal time complexity. We take advantage Fibonacci heaps...

10.2312/pgv.20191107 preprint EN other-oa HAL (Le Centre pour la Communication Scientifique Directe) 2019-06-03

A review of the two competing paradigms explaining inflation and unemployment fluctuations singles out Keynesian Phillips curve as clear empirical winner over its classic competitors. Reestimation Canadian for 1957-90 identifies a sharp structural shift toward high degree hysteresis after 1972. The recent attempt macropolicy to flatten aggregate demand limit supply-side shock accommodation, which aims at lower more stable inflation, is then shown make higher unstable on average, an extent...

10.2307/135693 article EN Canadian Journal of Economics/Revue canadienne d économique 1991-11-01

Au Québec, un programme de services garde à contribution réduite pour les enfants d'âge préscolaire a été introduit en 1997. Sur la base d'études antérieures, nous estimons qu'en 2008 ce permis environ 69 700 mères (ou 3,8 %) plus détenir emploi que si le Québec avait plutôt continué suivre l'approche traditionnelle (surtout fiscalisée) qui est restée vigueur dans autres provinces canadiennes. Nous calculons cette addition au marché du travail entraîné une majoration 5,1 G$ 1,7 revenu...

10.4000/interventionseconomiques.1858 article FR cc-by Interventions économiques 2013-02-13

The AMD APU (Accelerated Processing Unit) architecture, which combines CPU and GPU cores on the same die, is promising for applications performance bottlenecked by low PCI Express communication rate. However first generations still have different memory partitions. Currently, integrated GPUs are also less powerful than discrete GPUs. In this paper we therefore investigate interest of APUs scientific computing evaluating comparing two successive (family codename Llano Trinity), (chip Cayman...

10.1109/pdp.2013.65 preprint EN 2013-02-01

10.1016/0165-1765(84)90095-8 article EN Economics Letters 1984-01-01

Context.N-body simulations are widely used for galactic dynamics studies. Several different algorithms have been developed and a number of authors made their codes public.

10.1051/0004-6361/201015933 article EN Astronomy and Astrophysics 2011-06-06

The various factors that may affect the loss in mechanical properties encountered a1uminum magnesium-silicon alloys, when some natural ageing is allowed to take place between solution treatment and artificial ageing, were studied several common aluminum-magnesium silicide alloys. composition solution-treatment temperature found be two main affecting phenomenon observed. Evidence obtained shows results explained on basis of number size G. P. zones formed.

10.1179/cmq.1963.2.2.143 article EN Canadian Metallurgical Quarterly 1963-04-01

Since 1985, the IEEE 754 standard defines formats, rounding modes and basic operations for floating-point arithmetic. In 2008 has been extended, recommendations have added about of some elementary functions such as trigonometric (cosine, sine, tangent their inverses), exponentials, logarithms. However to guarantee exact these one approximate them with a sufficient precision. Finding this precision is known Table Maker's Dilemma. To determine precision, it necessary find hardest-to-round...

10.1109/pdp.2012.64 preprint EN 2012-02-01

10.1016/j.mcm.2009.08.039 article EN publisher-specific-oa Mathematical and Computer Modelling 2009-09-03

Oil and gas companies rely on high performance computing to process seismic imaging algorithms such as reverse time migration. Graphics processing units are used accelerate migration, but these deployments suffer from limitations the lack of graphics unit memory capacity, frequent CPU-GPU communications that may be bottlenecked by PCI bus transfer rate, power consumptions. Recently, AMD has launched Accelerated Processing Unit (APU): a processor merges CPU same die featuring unified memory....

10.1177/1094342017696562 article EN The International Journal of High Performance Computing Applications 2017-04-05
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