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<span style="margin:0px"><span style="margin:0px"><span style="margin:0px; box-sizing:border-box"><span style="margin:0px"><b style="font-family:"Calibri Light","Helvetica Light",sans-serif; font-size:16pt; background-color:rgb(255,255,255); color:black!important">Structures
as Sensors: Physics-guided Learning for Indirectly Monitoring Humans and Surroundings</b>
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<div style="margin:0px; background-color:rgb(255,255,255)"><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0)">Speaker: Hae Young Noh</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0); background-color:rgba(0,0,0,0)"> Associate Professor</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0); background-color:rgba(0,0,0,0)"> Stanford University</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="color:rgb(0,0,0); font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt">Location: online/virtual</span></div>
<div style="margin:0px; background-color:rgb(255,255,255)"><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0)">Date/Time:
<b>TODAY</b> Tuesday</span><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0)">, March 15th, 2022, 10–11am MST</span><br>
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<div style="margin:0px; background-color:rgb(255,255,255)"><b>UPDATE for USGS-GHSC employees ONLY:</b> We will attempt our first "hybrid" GHSC seminar. If you are working on-site at the Geologic Hazards Science Center today, please consider attending the seminar
in-person to meet our guest face-to-face. Unfortunately, for now, we are unable to extend this invitation to our non-USGS colleagues, but hope to revisit this question in the near future.<br>
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<div style="margin:0px; background-color:rgb(255,255,255)"><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0)">Abstract: ‘Smart structures’ sense, understand, and respond to structure itself, the humans
within, and the surrounding environment. Traditional monitoring approaches using dedicated sensors often result in dense sensing systems that are difficult to install and maintain in large-scale structures. In this talk, I introduce “Structures as Sensors”
approach that utilizes the structure itself as a sensing medium to indirectly infer multiple types of information (e.g., occupant activity, surrounding infrastructure states) through their influence on the physical response of the structure. Challenges lie
in creating robust inference models for analyzing noisy structural response data. To this end, we developed physics-guided data analytics approaches combining statistical signal processing and machine learning with physical principles. I will present two projects
as examples of this approach: 1) Vehicles as Sensors: indirect infrastructure health monitoring through vehicle responses; and 2) Buildings as Sensors: occupant tracking and characterization through footstep-induced building vibrations. We developed new learning
methods incorporating structural dynamics, wave propagation, and human activity models; and we evaluated our methods with real-world experiments, including our 6-year railway and eldercare center deployments.</span></div>
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<div style="margin:0px"><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0); background-color:rgb(255,255,255)">Bio</span><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0)">: </span><span style="margin:0px"></span><span style="margin:0px; font-size:12pt; font-family:Calibri,Arial,Helvetica,sans-serif; color:rgb(0,0,0)">Hae
Young Noh is an Associate Professor in the Department of Civil and Environmental Engineering at Stanford University. Her research focuses on indirect sensing and physics-guided data analytics to enable low-cost non-intrusive monitoring of cyber-physical-human
systems. She is particularly interested in developing structures to be self-, user-, and surrounding-aware to improve users’ quality of life and provide safe and sustainable built environment. The results of her work have been deployed in a number of real-world
applications from trains, to the Amish community, to eldercare centers, to pig farms. Before joining Stanford, she was a faculty member at Carnegie Mellon University. She received her Ph.D. and M.S. degrees in Civil and Environmental Engineering and the second
M.S. degree in Electrical Engineering at Stanford University. She earned her B.S. degree in Mechanical and Aerospace Engineering at Cornell University. She received several awards, including the Google Faculty Research Awards (2013, 2016), the Dean’s Early
Career Fellowship (2018), the NSF CAREER Award (2017), and various Best Paper Awards from ASCE, ASME, ACM, IEEE, and SEM conferences.</span><span style="margin:0px; font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif; color:black!important; background-color:rgb(255,255,255)"></span></div>
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<span style="margin:0px"><span style="margin:0px; font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif; color:rgb(50,49,48)">GHSC Seminar Committee:</span><span style="margin:0px; font-size:12pt; color:rgb(50,49,48)"><span style="margin:0px; font-family:"Calibri Light","Helvetica Light",sans-serif"> </span></span><span style="margin:0px; font-size:12pt; font-family:"Calibri Light","Helvetica Light",sans-serif; color:rgb(50,49,48)">Oliver
Boyd <olboyd@usgs.gov>, Josh Rigler <erigler@usgs.gov>, Francis Rengers <frengers@usgs.gov></span></span></p>
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