{"52871":{"#nid":"52871","#data":{"type":"event","title":"HPC Seminar - Dr. George Biros","body":[{"value":"\u003Ch3\u003EHigh Performance Computing Seminar sponsored by the Computational Science and Engineering Division\u003C\/h3\u003E\n\u003Cp\u003E\n\u003C\/p\u003E\n\n\u003Cp\u003EGeorge Biros\u003Cbr \/\u003EUniversity of Pennsylvania \u003Cbr \/\u003EDepartment of Mechanical Engineering and Applied Mechanics\u003Cbr \/\u003EDepartment of Bioengineering\u003Cbr \/\u003EDepartment of Computer and Information Science\u003C\/p\u003E\n\u003Cp\u003E\u0022Toward petaflop algorithms for medical-image driven inverse problems in biophysics\u0022\u003C\/p\u003E\n\u003Cp\u003EIn this talk, I will describe algorithms for massively parallel assimilation of multimodal time-varying medical images with biophysical models. The goal is to create highly-resolved, physically-realistic, patient-specific biophysical models.  In addition, the numerical methods should deliver optimal algorithmic complexity, and should scale to thousands of processors. The target applications are problems in the cardiac and brain physiology.\u003C\/p\u003E\n\u003Cp\u003EIn particular, I will discuss three topics: (1) fast octree-based algorithms for elliptic and parabolic partial differential equations\u003C\/p\u003E\n\u003Cp\u003E(PDEs) that are used to model the biophysics; (2) algorithms for inverse problems constrained by partial differential equations; and\u003C\/p\u003E\n\u003Cp\u003E(3) the application of the inverse and forward solvers to 4D deformable image registration problems that aim to extract cardiac motion data from MRI sequences and to subsequently use the reconstructed motion fields as virtual observations to identify patient-specific spatial tissue heterogeneities (for example, ischemic regions in the heart).\u003C\/p\u003E\n\u003Cp\u003EBio:\u003Cbr \/\u003EGeorge Biros is an assistant professor in Mechanical Engineering and Applied Mechanics, Bioengineering, and Computer and Information Science at the University of Pennsylvania. He received his BS in Mechanical Engineering from Aristotle University Greece (1995), his MS in Biomedical Engineering from Carnegie Mellon (1996), and his PhD in Computational Science and Engineering also from Carnegie Mellon (2000). He joined Penn in 2003 after a postdoctoral appointment at the Courant Institute of Mathematical Sciences. He is affiliated with the Computer Science Research Institute (CSRI) at the Sandia National Laboratories.\u003C\/p\u003E\n\u003Cp\u003E\u003C\/p\u003E","summary":null,"format":"limited_html"}],"field_subtitle":"","field_summary":"","field_summary_sentence":"","uid":"27154","created_gmt":"2010-02-11 15:58:01","changed_gmt":"2016-10-08 01:50:17","author":"Louise Russo","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2008-02-04T12:00:00-05:00","event_time_end":"2008-02-04T13:00:00-05:00","event_time_end_last":"2008-02-04T13:00:00-05:00","gmt_time_start":"2008-02-04 17:00:00","gmt_time_end":"2008-02-04 18:00:00","gmt_time_end_last":"2008-02-04 18:00:00","rrule":null,"timezone":"America\/New_York"},"extras":[],"groups":[{"id":"47223","name":"College of Computing"}],"categories":[],"keywords":[],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[{"value":"Haesun Park","format":"limited_html"}],"email":[],"slides":[],"orientation":[],"userdata":""}}}