{ "153418-21915837": { "datetime_modified":"20261007T164243", "datetime_start":"20261105T150000", "datetime_end":"20261105T160000", "has_end_time":1, "date_start":"2026-11-05", "date_end":"2026-11-05", "time_start":"15:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"IOE 899: O\u011fuzhan \u00c7elebi", "occurrence_title":"", "combined_title":"IOE 899: O\u011fuzhan \u00c7elebi: \u201cRepresentation in District Based Elections\u201d", "event_subtitle":"\u201cRepresentation in District Based Elections\u201d", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"District-based elections must reconcile two objectives: representing each district\u2019s electorate and matching the statewide delegation to political support. We study seat allocation rules when these objectives conflict.The optimal rules, characterized by a cutoff, form a family ranging from first-past-the-post to proportional representation as the weight on statewide representation increases. Along this path, gaining further seats through gerrymandering becomes increasingly difficult. The characterization yields a measure of the robustness of first-past-the-post to statewide representation concerns, which we compare with established electoral diagnostics. In U.S. House elections from 2002 to 2024, we find that maps drawn by single-party legislatures perform worse than those produced by other institutions, and Republican-legislature maps fare worse than Democratic-legislature maps. The efficiency gap, a common partisan-gerrymandering measure, is more strongly associated with litigated maps than the other measures, yet it considerably amplifies the Republican-Democratic asymmetry.", "occurrence_notes":null, "guid":"153418-21915837@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/153418", "building_id":"1000429", "building_name":"Industrial and Operations Engineering Building", "campus_maps_id":"73", "room":"1680", "location_name":"Industrial and Operations Engineering Building", "has_livestream":0, "cost":"", "tags":["Industrial And Operations Engineering","Graduate Students","Graduate","899 Seminar Series"], "website":"", "sponsors":[ { "group_name":"Industrial & Operations Engineering", "group_id":"3301", "website":"http:\/\/ioe.engin.umich.edu\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/10\/event_153418_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/10\/event_153418_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/10\/event_153418_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/10\/event_153418_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/10\/event_153418_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/10\/event_153418_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/10\/event_153418_original-1.png" }, "occurrence_count":1, "first_occurrence":21915837 } , "147950-21902585": { "datetime_modified":"20260909T145456", "datetime_start":"20261105T153000", "datetime_end":"20261105T163000", "has_end_time":1, "date_start":"2026-11-05", "date_end":"2026-11-05", "time_start":"15:30:00", "time_end":"16:30:00", "time_zone":"America\/Detroit", "event_title":"IES Energy Seminar Series - Decision Making for Sustainability Using the Objective Reduction Community Algorithm (ORCA)", "occurrence_title":"", "combined_title":"IES Energy Seminar Series - Decision Making for Sustainability Using the Objective Reduction Community Algorithm (ORCA): Andrew Allman, U-M Chemical Engineering", "event_subtitle":"Andrew Allman, U-M Chemical Engineering", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Abstract: \nMany objective optimization problems (MaOPs), defined here as problems with four or more objectives, inherently arise when designing and operating sustainable process and energy systems. Nonetheless, MaOPs remain a particularly difficult and understudied problem class owing to challenges in both scalably generating solutions (in the form of a Pareto frontier) and interpreting the solutions we do get. This talk begins by providing a tutorial overview of methods commonly used to generate Pareto frontiers for multi-objective (defined as two or more objectives) optimization problems, alongside a discussion of why these approaches tend not to scale well when increasing the number of objectives. Then, I present the Objective Reduction Community Algorithm (ORCA), our group\u2019s novel approach for reducing the objective dimensionality of MaOP\u2019s to a manageable two or three a priori to solving the problem. At a high level, this approach identifies which objectives are likely to be pointing to similar decisions, embeds this information into a graph, and uses community detection to partition this graph to give groupings of objectives which are correlated within groups, but competing between groups. Three case studies are presented which demonstrate the power and efficacy of this approach for sustainable decision making. In the first, the correlation of planetary boundary objectives within a large scale sustainable fuel supply chain is assessed. The second case study considers changes in objective correlation due to intermittency in objective parameters, and assesses the correlation between cost and emissions driven industrial demand response for two different electrified chemical processes. The third case study utilizes an extension of ORCA to nonlinear MaOP\u2019s, showcasing its utility on a commonly used set of benchmark problems with known objective correlations, the DZLT5 problems, as well as on a design problem for a carbon capture, utilization, and storage network. I conclude by providing some perspective on future applications of our approach to problems of distributed model predictive control and aligned agentic AI systems.\n\nBiography:\nAndrew Allman is currently an assistant professor in the Department of Chemical Engineering at the University of Michigan, and has been in this position since fall 2020. Andrew is an alumnus of the University of Minnesota Department of Chemical Engineering and Materials Science, where he obtained his Ph.D. with Prodromos Daoutidis in 2018 and subsequently worked in a post-doctoral position with Qi Zhang from graduation until joining Michigan. His awards include receiving the NSF CAREER Award in 2023, and the CAST Director\u2019s Student Presentation Award in 2018. His recent research at Michigan has focused on solving many-objective optimization problems, assessing the operation and control of modular chemical production systems, embedding machine-learned classifier models to enhance moving horizon decision making, and solving structure detection problems for networks with constraints or uncertainty for distributed optimization.\n\nFor the most up to date information on the location, please check the related link the week of this event", "occurrence_notes":null, "guid":"147950-21902585@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/147950", "building_id":"1000395", "building_name":"Francois-Xavier Bagnoud Building", "campus_maps_id":"17", "room":"FXB1012", "location_name":"Francois-Xavier Bagnoud Building", "has_livestream":0, "cost":"", "tags":["Michigan Engineering","Sustainability","Social Sciences","seminar","Science","Research","Nuclear Engineering and Radiological Sciences","North Campus","Naval Architecture and Marine Engineering","CAEN","Mechanical Engineering","Materials Science","Law","Interdisciplinary","Industrial and Operations Engineering","Free","Environment","Engineering","Energy","Electrical Engineering and Computer Science","Civil and Environmental Engineering"], "website":"https:\/\/ies.engin.umich.edu\/energy-seminar-series\/", "sponsors":[ { "group_name":"Institute for Energy Solutions", "group_id":"5361", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2026\/08\/event_147950_original-1.bmp", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/08\/event_147950_original-1.bmp" }, "occurrence_count":1, "first_occurrence":21902585 } }