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Events for February 13, 2014
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Astani CEE Seminar
Thu, Feb 13, 2014 @ 10:00 AM - 11:00 AM
Sonny Astani Department of Civil and Environmental Engineering
Conferences, Lectures, & Seminars
Speaker: Xing Xie, Stanford University
Talk Title: Advanced Materials and Nanotechnology for Environmental Applications
Abstract: Advanced materials and nanotechnology are powerful tools that have been changing our lives dramatically. However, we are still facing very challenging environmental issues, such as water contamination, air pollution, and climate change. To tackle these environmental issues, my research focuses on applying advanced materials and nanotechnology to enhance the performance of existing environmental technologies, and to develop new technologies that can provide better solution to various environmental issues. In this presentation, I will introduce two different environmental applications. One is about nano-enhanced microbial electrochemical cells for wastewater treatment and energy recovery. I have developed 3D bio-electrodes for microbial electrochemical cells with superior performance. I also have invented a new microbial electrochemical device, named “microbial battery”, achieving higher than 30% energy efficiency. The other application is about nano-assisted new technologies for efficient water disinfection. In one example, strong electric field generated near the tips of nanowire structures is applied to kill bacteria and viruses in water. Removal efficiencies higher than 6-log have been achieved with retention times less than one second. In another example, water disinfection is realized by employing silver nanoscavengers, which are nanodisks with magnetic cores and silver capping layers. The silver nanoscavengers can be separated from treated water effectively after treatment and reused for thousands of times.
Biography: Xing Xie received his B.S. (2006) and M.S. (2008) degrees from Tsinghua University, and he is currently a Ph.D. candidate in the Department of Civil and Environmental Engineering at Stanford University and a Henry Fan Fellow supported by the Stanford Interdisciplinary Graduate Fellowship. His research mainly focuses on applying advanced materials and nanotechnology for environmental applications. He has worked on many projects related to microbial electrochemical cells, water disinfection, water reuse, algae control, mixing entropy batteries, electrochemical capacitors, and Li-ion batteries. He has published more than 20 peer-reviewed articles in leading journals, including PNAS, Nature Communications, Nano Letters, Energy & Environmental Science, and ACS Nano. He received the Larry C. K. Yung Fellowship in 2008-2009, the David and Lucile Packard Foundation Fellowship in 2009-2011, and the Graduate Student Award in Environmental Chemistry from the American Chemical Society in 2012.
Host: Astani CEE Department
Location: Kaprielian Hall (KAP) - 209
Audiences: Everyone Is Invited
Contact: Cassie Cremeans
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Epstein ISE Department Seminar
Thu, Feb 13, 2014 @ 10:00 AM - 11:00 AM
Daniel J. Epstein Department of Industrial and Systems Engineering
Conferences, Lectures, & Seminars
Speaker: Ms. Ermin Wei, Electrical Engineering and Computer Science, Massachusetts Institute of Technology
Talk Title: "Distributed Optimization and Market Analysis of Networked Systems"
Abstract: In the interconnected world of today, large-scale networked systems are ubiquitous. Some examples include communication networks, electricity grid and sensor networks. In this talk, we describe two recent results related to these networked systems. In the first part, we present a fast distributed asynchronous Alternating Direction Method of Multipliers (ADMM) based method for solving general separable convex problems in large-scale systems, which can be applied to the LASSO and many other machine learning problems. We show that this method has convergence guarantee and the best known rate of convergence. In the second part, we discuss our model on the competitive equilibrium in electricity markets where price fluctuation imposes difficulties in budgeting and planning. We introduce an explicit penalty on the price volatility and establish that price volatility penalty can be implemented via the use of storage.
THURSDAY, FEBRUARY 13, 2014
RONALD TUTOR HALL (RTH) ROOM 526
10:00 - 11:00 AM
Biography: Ermin Wei received her undergraduate triple degree in Computer Engineering, Finance and Mathematics with a minor in German, from University of Maryland, College Park in 2008. She obtained her M.S. in 2010 and now is in her final year of PhD studies in Electrical Engineering and Computer Science at MIT, advised by Professor Asu Ozdaglar. Ermin has received many awards, including the Graduate Women of Excellence Award, second place prize in Ernst A. Guillemen Thesis Award and Alpha Lambda Delta National Academic Honor Society Betty Jo Budson Fellowship. Ermin's research interests include distributed optimization methods, convex optimization and analysis, smart grid and energy networks and market economic analysis.
Host: Daniel J. Epstein Department of Industrial and Systems Engineering
More Information: Seminar-Wei_Ermin.doc
Location: Ronald Tutor Hall of Engineering (RTH) - 526
Audiences: Everyone Is Invited
Contact: Georgia Lum
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2014 Cornelius Pings Lecture
Thu, Feb 13, 2014 @ 02:00 PM - 03:30 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
Speaker: Kristi S. Anseth, University of Colorado Boulder, Boulder, CO; Department of Chemical Biological Engineering
Talk Title: Engineering hydrogels as synthetic extracellular matrices for cell culture and tissue regeneration
Series: Cornelius Pings Lecture
Abstract: Methods for culturing mammalian cells in a biologically relevant context are increasingly needed to study cell and tissue physiology, expand and differentiate progenitor cells, and to grow replacement tissues for regenerative medicine. Two dimensional culture has been the paradigm for in vitro cell culture; however, evidence and intuition suggest that cells behave differently when they are isolated from the complex architecture of their native tissues and constrained to petri dishes or material surfaces with unnaturally high stiffness, polarity, and surface to volume ratio. As a result, biologists are often faced with the need for a more physiologically relevant 3D culture environment, and many researchers are realizing the advantages of hydrogels as a means of creating custom 3D microenvironments with highly controlled chemical, biological and physical cues. Further, the native extracellular matrix (ECM) is far from static, so ECM mimics must also be dynamic to direct complex cellular behavior. In general, there is an un-met need for materials that allow user-defined control over the spatio-temporal presentation of important signals, such as integrin-binding ligands, growth factor release, and biomechanical signals. Developing such hydrogel mimics of the ECM for 3D cell culture is an archetypal engineering problem, requiring control of numerous properties on multiple time and length scales important for cellular functions. New materials systems have the potential to significantly improve our understanding of how cells receive information from their microenvironment and the role that these dynamic processes may play in controlling the stem cell niche to cancer metastasis. This talk will illustrate our recent efforts to advance hydrogel chemistries for 3D cell culture and dynamically control biochemical and biophysical properties through orthogonal, photochemical reaction mechanisms.
Biography: KRISTI S. ANSETH is a Howard Hughes Medical Institute Investigator and Distinguished Professor of Chemical and Biological Engineering at the University of Colorado at Boulder. Dr. Anseth came to CU after earning her B.S. degree from Purdue University in 1992 and her Ph.D. degree from the University of Colorado in 1994 and completing post-doctoral research at MIT as an NIH fellow. Her research interests lie at the interface between biology and engineering where she designs new biomaterials for applications in drug delivery and regenerative medicine. Dr. Anseth’s research group has published over 250 publications in peer-reviewed journals and presented over 200 invited lectures in the fields of biomaterials and tissue engineering. She was the first engineer to be named a Howard Hughes Medical Institute Investigator and received the Alan T. Waterman Award, the highest award of the National Science Foundation for demonstrated exceptional individual achievement in scientific or engineering research. Dr. Anseth is an elected member of the National Academy of Engineering (2009), the Institute of Medicine (2009), and the National Academy of Sciences (2013). She is also a dedicated teacher, who has received four University Awards related to her teaching, as well as the American Society for Engineering Education’s Curtis W. McGraw Award. Dr. Anseth is a Fellow of the American Association for the Advancement of Science, the American Institute for Medical and Biological Engineering, and the Materials Research Society. She serves on the editorial boards or as associate editor of Biomacromolecules, Journal of Biomedical Materials Research â Part A, Acta Biomaterialia, Progress in Materials Science, and Biotechnology & Bioengineering.
More Information: K.Anseth.pdf
Location: Edward L. Doheny Jr. Memorial Library (DML) - DM 240, Lecture Hall
Audiences: Everyone Is Invited
Contact: Ryan Choi
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Technical Interview Tips from Amazon
Thu, Feb 13, 2014 @ 06:00 PM - 07:00 PM
Viterbi School of Engineering Career Connections
Workshops & Infosessions
Join an Amazon representative as he shares the inside scoop on technical interviewing. He will briefly discuss behavioral interviews, but the real focus here is the technical interview.
Hosted by ACM & Viterbi Career ServicesLocation: Seeley G. Mudd Building (SGM) - 124
Audiences: All Viterbi Students
Contact: RTH 218 Viterbi Career Services
