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November 2019

CBE Dissertation Defense: “Fabrication of Superhydrolic Nanostructured Membranes for Oil/Water Separation

November 25 at 3:00 PM - 5:00 PM
LRSM REading Room 106/107

Committee: Daeyeon Lee, PhD and Shu Yang, PhD, Co-Advisors; Kathleen Stebe, PhD and Amish Patel, PhD

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MEAM Seminar: “Micro/Nanomanufacturing of 3D Functional Coatings via Self-Limiting Electrospray Deposition”

November 26 at 10:30 AM - 12:00 PM
Glandt Forum, Singh Center for Nanotechnology, 3205 Walnut Street
Philadelphia, PA 19104 United States
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Recent developments in nanostructured materials have demonstrated myriad desirable properties ranging from optical and mechanical metamaterials to biomanipulative surfaces. To bring these properties from the lab to the commercial space will require innovative nanomanufacturing strategies focused on scalable and cost-effective techniques. My lab, the Hybrid Micro/Nanomanufacturing Laboratory, applies the manipulation of fundamental driving forces to this challenge through combinations of top-down and bottom-up techniques for new hybrid lithographic strategies. In this seminar, I will highlight one such strategy: self-limiting electrospray…

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ESE Seminar: “Management Strategies for Hyperscale Datacenters”

November 26 at 11:00 AM - 12:00 PM
Towne 337, 220 S 33rd St
Philadelphia, PA 19104 United States
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Abstract: Hyperscale datacenters provide critical infrastructure for the information economy, refining data to extract value. Sharing datacenters improves energy efficiency but whether strategic users participate depends on management policies. I address these challenges by integrating practical insights from computer architecture with rigorous methods in algorithmic economics and machine learning. I illustrate this approach for power allocation and performance diagnosis. First, I allocate server power by anticipating strategic behavior and incentivizing participation. I design mechanisms in which users selfishly draw power to…

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December 2019

PSOC Seminar : ‘Deconstructing tumor architecture’

December 2 at 12:00 PM - 1:00 PM
Room 337, Towne Building, 220 South 33rd Street
Philadelphia, PA 19104 United States
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MEAM Seminar: “Physics-Informed Neural Networks (PINNs) for Physical Problems & Biological Problems”

December 3 at 10:30 AM - 12:00 PM
Wu and Chen Auditorium (Room 101), Levine Hall, 3330 Walnut Street
Philadelphia, PA 19104 United States
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We will present a new approach to develop a data-driven, learning-based framework for predicting outcomes of physical and biological systems and for discovering hidden physics from noisy data. We will introduce a deep learning approach based on neural networks (NNs) and generative adversarial networks (GANs). We also introduce new NNs that learn functionals and nonlinear operators from functions and corresponding responses for system identification. Unlike other approaches that rely on big data, here we “learn” from small data by exploiting…

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ESE Seminar: “Beyond Supervised Learning for Biomedical Imaging”

December 3 at 11:00 AM - 12:00 PM
Smilow Center Auditorium, 3400 Civic Center Blvd
Philadelphia, PA 19104 United States
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Abstract: Today, many biomedical imaging tasks, such as 3D reconstruction, denoising, detection, registration, and segmentation, are solved with machine learning techniques. In this talk, I will present a flexible learning-based framework that has allowed us to derive efficient solutions for a variety of such problems, without relying on heavy supervision. I will primarily employ image registration as a concrete application and present the details of VoxelMorph, our unsupervised learning-based image registration tool. I will show empirical results obtained by co-registering…

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MEAM Special Seminar: “Differences in Material Properties of Trabecular Bone Tissue from Modeling- and Remodeling-Based Bone Formation in Rats”

December 3 at 12:00 PM - 1:00 PM
CRB Auditorium, 415 Curie Boulevard
Philadelphia, PA 19104 United States
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Bone undergoes continuous changes during life through processes of bone modeling and remodeling. Modeling-based bone formation (MBF) i.e. bone formation without prior activation of osteoclastic resorption, only occurs during growth, healing, and in response to external mechanical loading. Remodeling-based bone formation (RBF), which is tightly coupled with bone resorption by osteoclasts, plays a predominant role maintaining skeletal health. Recent studies identified the activation of MBF as an important mechanism by which anabolic agents, such as intermittent parathyroid hormone (PTH), rapidly…

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MSE Seminar: “In-Situ Resistance Degradation & Switching of Bulk Fe-doped SrTiO3 and Yttria-Stabilized Zirconia”

December 5 at 10:45 AM - 11:45 AM
Auditorium, LRSM Building, 3231 Walnut Street
Philadelphia, PA 19104 United States
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Perovskite-type titanates are the standard dielectric used in multilayer ceramic capacitors (MLCCs), and yttria-stabilized (YSZ) is the prototypical fast oxygen conductor used in solid oxide fuel cells (SOFCs) and oxygen sensors. Under a DC electric field, the resistance of YSZ and Fe-doped strontium titanate (Fe-STO) degrades in an indistinguishable way. This is surprising because, unlike YSZ, Fe-STO is a p-type semiconductor, so they cannot possibly degrade by the same mechanism. For decades, it is known that the degradation of perovskite…

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ESE PhD Thesis Defense: “Affordances and Control of a Spine Morphology for Robotic Quadrupedal Locomotion”

December 6 at 3:00 PM - 4:30 PM
Raisler Lounge (Room 225), Towne Building, 220 South 33rd Street
Philadelphia, PA 19104 United States
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Abstract: How does a robot’s body affect what it can do? This talk explores this question with respect to a morphology common to biology but rare in robotics: the presence of a bendable back. Using the Canid and Inu quadrupedal robots, I describe and quantify several advantages afforded by this morphological design choice for legged machines that can be evaluated against the spine's added weight and complexity. Additionally, I discuss control strategies related to quadrupedal running with a spine.

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MEAM Doctoral Dissertation Defense: “Estimation, Mapping and Navigation with Micro Aerial Vehicles for Infrastructure Inspection”

December 10 at 3:00 PM - 4:00 PM
Raisler Lounge (Room 225), Towne Building, 220 South 33rd Street
Philadelphia, PA 19104 United States
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Multi-rotor Micro Aerial Vehicles (MAV) have become popular robotic platforms in the last decade due to their manufacturability, agility and diverse payload options. Amongst the most promising applications areas of MAVs are inspection, air delivery, surveillance, search and rescue, real estate, entertainment and photography to name a few. While GPS offers an easy solution for outdoor autonomy, using onboard sensors is the only solution for autonomy in constrained indoor environments. In this work, we study onboard state estimation, mapping and…

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