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I hope to explain\nsome questions that arise in this context and invite people\nto think about them.", "occurrence_notes":null, "guid":"149233-21906024@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/149233", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3860", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"", "sponsors":[ { "group_name":"RTG Seminar on Geometry, Dynamics and Topology - Department of Mathematics", "group_id":"4900", "website":"" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21906024 } , "154402-21917657": { "datetime_modified":"20261101T234129", "datetime_start":"20261104T160000", "datetime_end":"20261104T170000", "has_end_time":1, "date_start":"2026-11-04", "date_end":"2026-11-04", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Student AIM Seminar: Instrument-Aware Diffusion for Solar Magnetogram Reconstruction", "occurrence_title":"", "combined_title":"Student AIM Seminar: Instrument-Aware Diffusion for Solar Magnetogram Reconstruction: Ian Augsburger", "event_subtitle":"Ian Augsburger", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Historical scientific archives often contain observations of lasting value that were acquired with lower-resolution instruments than those available today. Solar magnetograms provide a motivating example: the Michelson Doppler Imager (MDI) aboard the Solar and Heliospheric Observatory (SOHO) recorded decades of solar activity before the higher-resolution Helioseismic and Magnetic Imager (HMI) became available. We develop a generative framework that first learns how modern observations are transformed by an older instrument, uses this transformation to construct paired training data, and then trains a conditional diffusion model to reverse the loss of resolution. A scalable multiscale U-Net and DPM++ sampler generate multiple modern-quality reconstructions from each historical observation. More broadly, this provides a general strategy for connecting scientific archives across generations of instruments.", "occurrence_notes":null, "guid":"154402-21917657@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/154402", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"3088", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Applied Mathematics"], "website":"https:\/\/sites.google.com\/umich.edu\/umich-siamstudentchapter\/home?authuser=0", "sponsors":[ { "group_name":"Student AIM Seminar - Department of Mathematics", "group_id":"4902", "website":"" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/11\/event_154402_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/11\/event_154402_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/11\/event_154402_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/11\/event_154402_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/11\/event_154402_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/11\/event_154402_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/11\/event_154402_original-1.png" }, "occurrence_count":1, "first_occurrence":21917657 } }