Events
Past Event
WED@NICO WEBINAR: Lightning Talks with Northwestern Fellows and Scholars!
Northwestern Institute on Complex Systems (NICO)
12:00 PM
Details
NICO is hosting a lightning talk seminar each term as a part of our Wednesdays@NICO seminar series. Northwestern graduate students and postdoctoral fellows are invited to participate. To sign up for future lightning talks, please visit: https://bit.ly/2lRqSXK
Webinar:
Zoom link: https://northwestern.zoom.us/j/98719696231
Passcode: nico
Speakers:
Ifeoma Ozodiegwu - Postdoctoral Fellow, Feinberg School of Medicine
Chilochibi Chiziba - Research Assistant, Feinberg School of Medicine
Manuela Runge - Postdoctoral Fellow, Feinberg School of Medicine
David Sabin-Miller - Ph.D. candidate, McCormick School of Engineering
Yanxuan Shao - Ph.D. student, Weinberg College of Arts and Sciences
○ Ifeoma Ozodiegwu - Postdoctoral Fellow, Feinberg School of Medicine, Northwestern University
○ Chilochibi Chiziba - Research Assistant, Feinberg School of Medicine, Northwestern University
Title: Urban-rural differentials in the determinants of malaria transmission in Nigeria
Abstract: Nigeria accounted for roughly a quarter of global malaria cases and deaths in 2018. However, malaria transmission is heterogeneous at lower spatial scales, and understanding the drivers of transmission can inform decisions on where interventions should be prioritized. We aimed to identify factors associated with high levels of malaria transmission within urban and rural areas. We merged and analyzed cluster-level data collected in Nigeria in 2010, 2015, and 2018 by the Demographic Health Survey (DHS) program. Our analysis highlight similarities and differences in the determinants of transmission in urban and rural areas. Our findings provides supporting evidence for the positive impact of increased access to ACTs and suggest the need for greater intervention distribution in highly populated rural areas.
Bios: Ifeoma Ozodiegwu is a Postdoctoral Fellow with Dr. Jaline Gerardin Lab’s in the Department of Preventive Medicine. She received her Doctor of Public Health (DrPH) in Epidemiology from East Tennessee University (ETSU) in May 2019, where she was a Rotary International Global Grant recipient. At the Dr. Gerardin Lab, she leads dynamical modeling for understanding the impact of malaria intervention mixes in Nigeria, and supports analytical projects that evaluate spatial variation in malaria transmission within endemic countries.
Chilochibi Chiziba is a Research Assistant with Dr. Jaline Gerardin Lab in the Department of Preventive Medicine. He is currently in his final year pursuing a Master of Public Health at the University of Zambia and holds a Bachelor of Arts Economics with Demography from the same institution. His experience includes Data Analytics, Research, Monitoring, and Evaluation while working for Atlas Corps, Jhpiego, and Akros Research on studies and projects focused on Renewable Energy, HIV/AIDS, and Health Systems. He is currently working with Dr. Ozodiegwu to explore variations in malaria transmission intensity, and interventions between urban and rural areas in Nigeria.
○ Manuela Runge - Postdoctoral Fellow, Feinberg School of Medicine, Northwestern University
Title: Modelling COVID-19 transmission and health burden in Illinois
Abstract: COVID-19 continues to spread across many states in the US and reached 664,620 cases and 11,552 deaths in Illinois. Until a vaccine is available, social distancing, lockdowns, contact tracing, and mask wearing and testing are the only measures to contain the epidemic and to prevent exceeding hospital capacities and limit the public health burden. Epidemiological models are widely used for simulating the likely effect of available measures and forecasts to inform decision-makers and hospital capacity planning.
A stochastic compartmental transmission model was calibrated for the eleven COVID-19 regions in Illinois, to simulate number of cases and hospital bed demand. The model was calibrated using hospital census and deaths report data between March and November 2020. The model was used to simulate the effects of reducing delay in testing, increased testing, contact tracing, lockdown, and social distancing alone or in combination. Outcome measures included the number of cases, deaths, or probability of exceeding hospital bed capacities. During course of the epidemic, the modelling outputs provided valuable predictions to support the local health department and provided insights into local transmission and disease dynamics.
Bio: Manuela Runge is a postdoctoral researcher at Northwestern University. Her research focuses on simulating malaria interventions to inform malaria control strategies at the country level and the development and application of a COVID-19 transmission model to support the local health department.
○ David Sabin-Miller - Ph.D. candidate in the Department of Engineering Sciences & Applied Mathematics, McCormick School of Engineering, Northwestern University
Title: When pull turns to shove: modeling how tribalism and environmental bias form ideological distributions in large populations
Abstract: Accurate modeling of political opinion dynamics can help us understand polarization, and the conditions which cause it. We put forward a framework for modeling the ideological drift of individuals influenced by a heterogeneous but systematically biased environment. We show that a local-attraction/distal-repulsion dynamic, distorted by tribalist "in-group-out-group" bias, can explain both the current US ideological distribution and behavior under perturbation as seen in a recent experiment. This talk will be a short summary of work published this October in Physical Review Research.
Bio: David is a fourth-year Ph.D. candidate working with Prof. Daniel Abrams in ESAM. His current research interests are in modeling and stochastic numerical methods.
○ Yanxuan Shao - Ph.D. student in the Department of Physics and Astronomy, Weinberg College of Arts and Sciences, Northwestern University
Title: Spontaneous oscillations in microfluidic networks
Abstract: Microfluidic systems are broadly applicable to chemical analysis, flow cytometry, point-of-care diagnosis, chemical synthesis, etc. However, the precise manipulation of fluid motion usually requires external hardware, such as micropumps and microvalves. In our research, we have examined a simple microfluid network design that exhibits nonlinear flow dynamics without the need of external control components. In particular, the system exhibits the spontaneous emergence of flow-rate oscillations for fixed inlet and outlet pressures, which we demonstrate using both simulations of the Navier-Stokes equations and an analytical model that captures essential aspects of the dynamics. Our results may help improve the portability and performance of microfluidic chips.
Bio: Yanxuan is a PhD student in the Department of Physics and Astronomy at Northwestern University. She works in Prof. Adilson Motter's group.
About the Speaker Series:
Wednesdays@NICO is a vibrant weekly seminar series focusing broadly on the topics of complex systems and data science. It brings together attendees ranging from graduate students to senior faculty who span all of the schools across Northwestern, from applied math to sociology to biology and every discipline in-between.
Time
Wednesday, December 2, 2020 at 12:00 PM - 1:00 PM
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)
WED@NICO SEMINAR: Daniel Stouffer, Leibniz Institute "Conceptual and Theoretical Challenges in the Study of Multi-Species Coexistence"
Northwestern Institute on Complex Systems (NICO)
12:00 PM
//
Lower Level, Chambers Hall
Details
Speaker:
Daniel B. Stouffer, Research Group Leader, Department of Evolutionary and Integrative Ecology, the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany
Title:
Conceptual and Theoretical Challenges in the Study of Multi-Species Coexistence
Abstract:
The population dynamics of most ecological communities unfold on temporal scales that cannot be fully studied in the laboratory or field. The generation times of trees, for example, are so long and varied that we may need to wait decades to determine how a whole, interconnected forest community responds to a changing climate. Many researchers thus use models to generate predictions that go beyond the bounds of what is experimentally tractable. To do so, it has become common to follow the "model-paramerisation paradigm". For example, a researcher interested in forest dynamics would not conduct long-term experiments to directly probe whether one tree species is ever competitively excluded by any other(s). Instead, they would use data from shorter-term experiments to estimate the parameters of a presupposed model, and then study whether or not their empirically parameterised model predicts competitive exclusion or coexistence. As powerful as this perspective has proven to be, it routinely hinges on multiple key assumptions that limit its versatility. I will describe recent and ongoing work that challenges these assumptions, while also describing some unexpected hurdles encountered along the way.
Speaker Bio:
Daniel B. Stouffer is a Research Group Leader in the Department of Evolutionary and Integrative Ecology at the Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin, Germany. His group adopts a variety of computational, statistical, and analytical approaches to overcome ecological communities' innate complexity while exploring fundamental biological questions. They work on a variety of topics and systems and are particularly interested in understanding the emergent ecological and evolutionary consequences that arise due to interactions between species.
Location:
In person: Chambers Hall, 600 Foster Street, Lower Level
Remote option: https://northwestern.zoom.us/j/98364690035
About the Speaker Series:
Wednesdays@NICO is a vibrant weekly seminar series focusing broadly on the topics of complex systems, networks, and artificial intelligence. It brings together attendees ranging from graduate students to senior faculty who span all of the schools across Northwestern, from applied math to sociology to biology and every discipline in-between. Please visit: https://bit.ly/WedatNICO for information on future speakers.
Time
Wednesday, May 6, 2026 at 12:00 PM - 1:00 PM
Location
Lower Level, Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)
WED@NICO SEMINAR: Hamsa Bastani, Wharton School, University of Pennsylvania "Challenges in Achieving Human-AI Collaboration"
Northwestern Institute on Complex Systems (NICO)
12:00 PM
//
Lower Level, Chambers Hall
Details
Speaker:
Hamsa Bastani, Associate Professor of Operations, Information, and Decisions, and Statistics and Data Science, Wharton School, University of Pennsylvania
Title:
Challenges in Achieving Human-AI Collaboration
Abstract:
TBA
Speaker Bio:
Hamsa Sridhar Bastani is an Associate Professor of Operations, Information, and Decisions (OID) and Statistics and Data Science at the Wharton School of the University of Pennsylvania, where she co-direct the Wharton Healthcare Analytics Lab. Her research sits at the intersection of machine learning, operations research, and economics. She studies how to design, deploy, and evaluate AI systems that empower human decision-makers and improve societal outcomes.
Professor Bastani aims to combine methodological depth with implementation in consequential environments. She has worked with national governments to deploy algorithms at the country scale for targeted border COVID-19 screening and essential medicine access, and has co-led one of the first large field studies of generative AI tutors in high school mathematics. She studies both the mathematical properties of algorithms and the way people respond to them.
Her research has been published in leading outlets including Nature, Management Science, Operations Research, and PNAS, and has garnered numerous recognitions, including the Wagner Prize for Excellence in Operations Research, the INFORMS Pierskalla Award for best healthcare paper, and the George Nicholson Prize. Previously, she graduated summa cum laude from Harvard in 2012 with an A.M. in physics and an A.B. in physics and mathematics, completed her PhD in Stanford's Electrical Engineering department under the supervision of Mohsen Bayati, and spent a year as a Herman Goldstine postdoctoral fellow at IBM Research.
Location:
In person: Chambers Hall, 600 Foster Street, Lower Level
Remote option: https://northwestern.zoom.us/j/99847338986
About the Speaker Series:
Wednesdays@NICO is a vibrant weekly seminar series focusing broadly on the topics of complex systems, networks, and artificial intelligence. It brings together attendees ranging from graduate students to senior faculty who span all of the schools across Northwestern, from applied math to sociology to biology and every discipline in-between. Please visit: https://bit.ly/WedatNICO for information on future speakers.
Time
Wednesday, May 13, 2026 at 12:00 PM - 1:00 PM
Location
Lower Level, Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)
WED@NICO SEMINAR: Lightning Talks with NU Scholars!
Northwestern Institute on Complex Systems (NICO)
12:00 PM
//
Lower Level, Chambers Hall
Details
NICO is looking for participants to share 12-15 minute lightning talks on their current research. To sign up, please fill out this short survey. These are open to Northwestern graduate students, postdoctoral fellows, and visiting scholars!
All talks will be given in person at Chambers Hall and this event will also be livestreamed via Zoom.
Speakers will be balanced based on their topics/disciplines in order to provide a broad representation of the research activities at NICO
Location:
In person: Chambers Hall, 600 Foster Street, Lower Level
Remote option: https://northwestern.zoom.us/j/98031689779
About the Speaker Series:
Wednesdays@NICO is a vibrant weekly seminar series focusing broadly on the topics of complex systems, networks, and artificial intelligence. It brings together attendees ranging from graduate students to senior faculty who span all of the schools across Northwestern, from applied math to sociology to biology and every discipline in-between. Please visit: https://bit.ly/WedatNICO for information on future speakers.
Time
Wednesday, May 20, 2026 at 12:00 PM - 1:00 PM
Location
Lower Level, Chambers Hall Map
Contact
Calendar
Northwestern Institute on Complex Systems (NICO)