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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190806T103000
DTEND;TZID=America/New_York:20190806T120000
DTSTAMP:20260408T152138
CREATED:20190722T132446Z
LAST-MODIFIED:20190722T132446Z
UID:10006241-1565087400-1565092800@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "From Elder Care Service Robots to the Design of Low-Cost End-Effectors and Novel Manipulation Techniques"
DESCRIPTION:Older adults are forming a much larger percentage of the population leading to a strain in the healthcare sector. It is expected that the population aged 65 and over in the United States alone will double in the next 30 years\, and similarly worldwide. Despite abundance of the facilities to accommodate the growing older adult population\, there is a shortage of caregivers to staff these facilities. With the scarcity of care options available\, low-cost robots may be a creative and vastly accessible solution for simple mobile and manipulation tasks that would normally be handled by a caregiver. \nThis work proposes an investigation on both behavioral and technical aspects of human robot interaction in elder care settings\, in view of a low-cost platform capable of executing desired tasks. The behavioral investigation combines a qualitative study with focus groups and surveys from not only the elders’ standpoint\, but also from the standpoint of healthcare professionals to investigate suitable tasks to be accomplished by a service robot in such environment. Through multiple deployments of the robot at actual elder care facilities (such as at a low-income Supportive Apartment Living\, SAL) and interaction with older adults\, design guidelines are developed to improve on both interaction and usability aspects. The technical investigation proposes novel manipulation techniques and end-effector design focusing on minimizing hardware usage and cost\, in addition to comply with safety constraints imposed by elder care facilities. Object picking through in-hand manipulation using custom-made end-effectors with no internal mobility (or zero degrees-of-freedom\, DOF) is proposed. The resulting operation incorporates tipping and regrasping as in-hand manipulation operations. The lack of mobility is advantageous as no active forces can be applied directly to the object by the end-effector\, and so the manipulated item be safely placed or removed by humans interacting with the robot\, a desirable feature for manipulation tasks especially in elder care settings.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-from-elder-care-service-robots-to-the-design-of-low-cost-end-effectors-and-novel-manipulation-techniques/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190807T130000
DTEND;TZID=America/New_York:20190807T150000
DTSTAMP:20260408T152138
CREATED:20190805T190801Z
LAST-MODIFIED:20190805T190801Z
UID:10006255-1565182800-1565190000@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation Defense: "Informing Neuromodulation Therapies with a Control-Theory Approach to Brain Network Plasticity"
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Dr. Dani Bassett are pleased to announce the Doctoral Dissertation Defense of Andrew Murphy. \nThe public is welcome to attend.
URL:https://seasevents.nmsdev7.com/event/doctoral-be-dissertation-defense-informing-neuromodulation-therapies-with-a-control-theory-approach-to-brain-network-plasticity/
LOCATION:Raisler Lounge (Room 225)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Student,Dissertation or Thesis Defense
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190808T120000
DTEND;TZID=America/New_York:20190808T140000
DTSTAMP:20260408T152138
CREATED:20190722T172656Z
LAST-MODIFIED:20190722T172656Z
UID:10006242-1565265600-1565272800@seasevents.nmsdev7.com
SUMMARY:BE Doctoral Dissertation Defense: "Multi-scale Brain Responses in the Development of Persistent Osteoarthritic Temporomandibular Pain"
DESCRIPTION:The Department of Bioengineering at the University of Pennsylvania and Drs. Eric Granquist and Beth Winkelstein are pleased to announce the Doctoral Dissertation Defense of Megan Sperry. The public is welcome to attend.
URL:https://seasevents.nmsdev7.com/event/be-doctoral-dissertation-defense-multi-scale-brain-responses-in-the-development-of-persistent-osteoarthritic-temporomandibular-pain/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Student,Dissertation or Thesis Defense
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190813T103000
DTEND;TZID=America/New_York:20190813T120000
DTSTAMP:20260408T152138
CREATED:20190808T140550Z
LAST-MODIFIED:20190808T140550Z
UID:10006263-1565692200-1565697600@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Mechanical Models for DNA"
DESCRIPTION:We will discuss two complementary mechanical models for DNA that deal with\, respectively two problems: one\, phase transitions in a DNA molecule\, and two\, allosteric interactions between two ligands bound to DNA. \nExperimental studies on single molecules of DNA have reported a rich variety of cooperative structural transitions\, including coexistence of three phases\, when a torsionally constrained DNA molecule is pulled using magnetic or optical tweezers. Our objective is to examine the aforementioned structural transitions using ideas from statistical mechanics and the theory of elasticity. We use foundational concepts from the Zimm-Bragg helix-coil transition theory and merge them with ideas from the theory of fluctuating elastic rods to model the mechanics of DNA. Furthermore\, we use Poisson-Boltzmann to account for the electrostatic interactions between the ions and the negatively charged phosphate backbone of DNA. Using our model\, we calculate the force and torque corresponding to the over-stretching transition characterized by a 70% jump in the contour length of the molecule and examine the effect of salt concentration on this transition. \nIn the next part\, we present a mechanical model for computing the allosteric interaction energy between two ligands on DNA. This interaction is quantified by measuring the change in free energy as a function of the distance between the binding sites for two ligands. We show that trends in the interaction energy of two ligands binding to DNA can be explained using an elastic birod model which accounts for the elastic deformation of strands and base-pairs as well as the change in stacking energy due to perturbations in position and orientation of the bases caused by the binding of ligands. The strain fields produced by the ligands decay with distance from the binding site. The interaction energy of two ligands decays exponentially with the distance between them and oscillates with the periodicity of the double helix in quantitative agreement with experimental measurements. The trend in the computed interaction energy is similar to that in the perturbation of groove width produced by the binding of a single ligand which is consistent with molecular simulations. Our analysis provides a new framework to understand allosteric interactions in DNA and can be extended to other rod-like macromolecules whose elasticity plays a role in biological functions. \nThe results from our model are in agreement with multiple experiments documented in the literature and they generate new falsifiable predictions that can be experimentally tested.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-mechanical-models-for-dna/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190814T100000
DTEND;TZID=America/New_York:20190814T120000
DTSTAMP:20260408T152138
CREATED:20190730T155059Z
LAST-MODIFIED:20190730T155059Z
UID:10006253-1565776800-1565784000@seasevents.nmsdev7.com
SUMMARY:MEAM Doctoral Dissertation Defense: "Additive Manufacturing and Mechanical Properties of Cellulose Nanofibril Materials"
DESCRIPTION:Cellulose nanofibrils (CNFs) are a nanomaterial derived from plants that have high specific stiffness and strength\, can be made into optically transparent materials\, and are biodegradable. These properties make CNFs an attractive building block for bulk structural materials. However\, CNFs are typically produced in aqueous suspension at low CNF weight fractions (<1 wt.%)\, which makes manufacturing bulk CNF materials challenging due to long processing times and the development of significant residual stresses during drying. As a result\, applications of CNFs in structural materials are currently limited to thin films and their use as low concentration reinforcement in composite materials. The objective of this dissertation is to overcome current limitations in building neat CNF materials by using additive manufacturing approaches to print films from aqueous CNF solutions with controlled fiber orientation and to build bulk structures with mm-scale thicknesses and enhanced mechanical properties. \nThis dissertation reports the use of two additive manufacturing techniques\, direct ink writing and laminated object manufacturing\, to fabricate neat CNF thin films with controlled orientation and materials with millimeter-scale dimensions\, respectively. The orientation of the CNFs in the printed films and the mechanical properties of the films and laminated CNF materials were experimentally characterized. Orientation in the printed CNF films was found to be controlled by the drying mechanics\, and a correlation between orientation and stiffness was observed. The multi-ply CNF films and laminated bulk beams with thicknesses of up to 0.6 mm were found to have comparable stiffness and strength and increased toughness compared to single-layer CNF films. Key contributions of this dissertation include the development of a printing process to decrease the time to fabricate CNF films\, a demonstration and a mechanics-based understanding of the control of fiber orientation in printed CNF materials\, and a new process to realize bulk neat CNF materials with increased thickness and enhanced toughness.
URL:https://seasevents.nmsdev7.com/event/meam-doctoral-dissertation-defense-additive-manufacturing-and-mechanical-properties-of-cellulose-nanofibril-materials/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190815T103000
DTEND;TZID=America/New_York:20190815T120000
DTSTAMP:20260408T152138
CREATED:20190801T194536Z
LAST-MODIFIED:20190801T194536Z
UID:10006254-1565865000-1565870400@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: “Delivering Expressive and Personalized Fingertip Haptic Cues”
DESCRIPTION:The importance of meaningful tactile experiences has become increasingly apparent in areas such as teleoperation\, education\, and gaming. As the applications of rendering haptic stimuli are growing\, so are the requirements of haptic interfaces\, in that the intended audience is becoming more diverse and the intended interactions are becoming more complicated. For the past few decades there has been a consistent effort to improve the range and realism of haptic cues\, yet typical haptic rendering continues to be one-size-fits-all and low-dimensional. To render increasingly realistic haptic cues\, we must focus on both expressiveness and personalization. \nIn this talk I will present work towards delivering more expressive and personalized fingertip haptic cues from the perspective of both mechanical design and rendering approach. I will first present the Fuppeteer\, a parallel continuum manipulator that can move a flat surface around the fingertip with six degrees of freedom. This wearable device can provide combinations of normal and shear forces across the user’s entire fingertip\, regardless of finger shape and size. We have evaluated system performance through force measurements and through a human-subject study. This talk will also feature ongoing development of algorithms for delivering personalized sensed cues\, independent of the specific haptic device and remote sensor used. I will discuss both geometric and data-driven approaches\, and I will provide preliminary measurements of the rendering error generated by each method.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-delivering-expressive-and-personalized-fingertip-haptic-cues/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190816T100000
DTEND;TZID=America/New_York:20190816T113000
DTSTAMP:20260408T152138
CREATED:20190529T133703Z
LAST-MODIFIED:20190529T133703Z
UID:10006228-1565949600-1565955000@seasevents.nmsdev7.com
SUMMARY:CBE Doctoral Dissertation Defense: "Utilization of MEMS Techniques for the Fabrication of Scalable Energy Storage Devices"
DESCRIPTION:Committee Members: Sue Ann Bidstrup Allen\, Advisor; Raymond Gorte\, John Vohs and Mark Allen.
URL:https://seasevents.nmsdev7.com/event/cbe-doctoral-dissertation-defense-utilization-of-mems-techniques-for-the-fabrication-of-scalable-energy-storage-devices/
LOCATION:Glandt Forum\, Singh Center for Nanotechnology\, 3205 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190816T100000
DTEND;TZID=America/New_York:20190816T120000
DTSTAMP:20260408T152138
CREATED:20190722T204450Z
LAST-MODIFIED:20190722T204450Z
UID:10006243-1565949600-1565956800@seasevents.nmsdev7.com
SUMMARY:CBE Doctoral Thesis Defense: "Utilization of Mems Techniques for the Fabrication of Scalable Energy Storage Devices"
DESCRIPTION:Committee: Sue Ann Bidstrup Allen\, Advisor; Raymond Gorte\, John Vohs and Mark Allen
URL:https://seasevents.nmsdev7.com/event/cbe-doctoral-thesis-defense-utilization-of-mems-techniques-for-the-fabrication-of-scalable-energy-storage-devices/
LOCATION:Glandt Forum\, Singh Center for Nanotechnology\, 3205 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Doctoral,Student,Dissertation or Thesis Defense
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190820T103000
DTEND;TZID=America/New_York:20190820T120000
DTSTAMP:20260408T152138
CREATED:20190806T184018Z
LAST-MODIFIED:20190806T184018Z
UID:10006262-1566297000-1566302400@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Nano-compatible Neuromorphic Computers: An All-passive Approach to Neural Networks"
DESCRIPTION:This era of the internet of things is poised to experience explosive growth in the number of interconnected smart electronic devices. Machine learning algorithms\, such as neural networks\, are expected to play an indispensable role in analyzing the data gathered by these devices\, and in many cases\, will also facilitate informed device responses. However\, the prospect of connecting a billion devices to the cloud and implementing large-scale neural networks remotely is infeasible for applications such as autonomous driving\, implantable medical devices\, and robotic platforms\, that need the information to be processed speedily\, at a small power budget. To deliver these requirements\, it becomes necessary to equip devices with hardware that is optimized for neural network computations. For nanoscale implementations of such “neuromorphic” computers\, it is important to develop simple designs of constituent circuits so that the required architectural complexity can be achieved within the nanofabrication constraints. \nCurrent “neuromorphic” hardware designs typically utilize active circuits\, comprising of three-terminal devices\, to implement artificial neurons\, an approach that is not suitable for compact nanoscale implementations. In this talk\, we will show\, how all-passive circuits for artificial neurons\, comprising of two-terminal devices only\, can instead address these drawbacks effectively. We will introduce simple circuit representations of artificial synapses and discuss how these enable improved memory-efficiencies vis – a – vis contemporary designs. By combining the passive neurons and synapses in network configurations\, we will demonstrate how all-passive neuromorphic computers can perform complex pattern recognition tasks\, such as identifying numerical digits from their images\, with accuracies greater than 95%. The classification accuracies\, power consumption and areal footprint of all – passive neuromorphic computers will be compared to those of the state – of – the – art technology. On the fabrication front\, we will introduce simple methods for realizing re-programmable and once-programmable artificial synapses and delve into their operational attributes. Simple electrochemical deposition techniques for fabricating neurons will also be presented. The results of this work will promote new approaches to the design and fabrication of integrated nanoscale neuromorphic computers.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-nano-compatible-neuromorphic-computers-an-all-passive-approach-to-neural-networks/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190827T143000
DTEND;TZID=America/New_York:20190827T153000
DTSTAMP:20260408T152138
CREATED:20190820T190813Z
LAST-MODIFIED:20190820T190813Z
UID:10006266-1566916200-1566919800@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Small\, Autonomous\, Flying Robots that can Feel and Map their Environment"
DESCRIPTION:Autonomous flight through unknown environments in the presence of obstacles is a challenging problem for micro aerial vehicles (MAVs). A majority of the current state-of-art research focuses on modeling obstacles as opaque objects that can be easily sensed by optical sensors such as cameras or LiDARs. Since obstacles may not always be opaque\, particularly in indoor environments with glass walls and windows\, robots (like birds) have a difficult time navigating to the unknown environments. \nIn this thesis\, we describe the design\, modeling\, control and sensing for a new class of micro aerial vehicles that can navigate unknown environments and are robust to collisions. In particular\, we present the design of the Tiercel MAV: a small\, agile\, light weight\, collision-resistant robot powered by a cellphone grade CPU. The Tiercel is able to localize using a visual-inertial odometry (VIO) algorithm running on board the robot with a single downward facing wide angle camera. Next\, we characterize the effects of impacts and collisions on the visual-inertial odometry running on board the robot. We further develop the system architecture and components to enable the Tiercel to fly autonomously in an unknown space\, detect collisions using its on board IMU\, and leverage that information to build a 2D map of the environment. Finally\, we demonstrate the capability of a swarm of three Tiercel robots to navigate autonomously through an unknown\, obstacle ridden space while sustaining collisions with the environment. Finally\, our approach exploits contact to infer the presence of transparent or reflective obstacles like glass walls\, allowing us to naturally integrate touch with visual perception for SLAM.
URL:https://seasevents.nmsdev7.com/event/meam-summer-seminar-small-autonomous-flying-robots-that-can-feel-and-map-their-environment/
LOCATION:Room 307\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190830T140000
DTEND;TZID=America/New_York:20190830T160000
DTSTAMP:20260408T152138
CREATED:20190823T181025Z
LAST-MODIFIED:20190823T181025Z
UID:10006270-1567173600-1567180800@seasevents.nmsdev7.com
SUMMARY:CBE Doctoral Dissertation Defense: "Anisotropy and Aggregation in Self-Assembled Polymer Nanocomposites"
DESCRIPTION:Committee: Robert Riggleman\, PhD (co-advisor); Russell Composto\, PhD (co-advisor); Ravi Radhakrishan\, PhD; and Jeff Meth\, PhD
URL:https://seasevents.nmsdev7.com/event/cbe-doctoral-dissertation-defense-anisotropy-and-aggregation-in-self-assembled-polymer-nanocomposites/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190830T153000
DTEND;TZID=America/New_York:20190830T163000
DTSTAMP:20260408T152138
CREATED:20190814T140342Z
LAST-MODIFIED:20190814T140342Z
UID:10006264-1567179000-1567182600@seasevents.nmsdev7.com
SUMMARY:MEAM/LRSM Seminar: "Enabling Soft\, Flexible 2D Materials and Sensors"
DESCRIPTION:Low temperature synthesis of high quality 2D materials directly on flexible substrates remains a fundamental limitation towards realization of robust\, strainable electronics possessing the unique physical properties of atomically thin structures. Here\, we describe room temperature synthesis of uniform\, stoichiometric amorphous MoS2\, WSe2\, and other transition metal dichalcogenides and subsequent large area (>5 cm2) photonic crystallization to enable direct fabrication of devices based on two-dimensional materials on large area flexible or rigid substrates. Fundamentals of crystallization kinetics for different monolithic and heterostructured TMDs are examined to apply this new synthesis approach for affordable\, wearable devices. Example devices include photodetectors with photocurrent output and response times comparable to those fabricated via CVD and exfoliated materials on rigid substrates and the performance is unaffected by strains exceeding 5%. Flexible molecular sensors fabricated in this way detect diverse vapor phase substances with sub-ppm sensitivity. Functionalization of laser-written 2D TMD sensor transducers is also demonstrated for healthcare applications. Devices and circuits directly written from photonically annealed monolithic TMDs thin films deposited on large area flexible substrates\, with no photolithography or patterning\, are also presented. Additionally\, other advanced processing strategies that enable flexible 2D materials will be discussed\, including h-BN van der Waals liftoff of GaN HEMT devices for future strainable RF devices.
URL:https://seasevents.nmsdev7.com/event/meam-lrsm-seminar-enabling-soft-flexible-2d-materials-and-sensors/
LOCATION:Reading Room\, LRSM\, 3231 Walnut Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190903T163000
DTEND;TZID=America/New_York:20190903T173000
DTSTAMP:20260408T152138
CREATED:20190816T145825Z
LAST-MODIFIED:20190816T145825Z
UID:10006265-1567528200-1567531800@seasevents.nmsdev7.com
SUMMARY:Penn Engineering Connects: A Reception on Inclusion
DESCRIPTION:A reception on inclusion will be held for new Penn Engineering doctoral students to connect them to their peers and supporting structures within the school. \nPlease join the Dean\, Deputy Dean\, the Director of the Office of Diversity and Inclusion\, faculty and staff leaders including chairs\, graduate group chairs and coordinators\, and leaders of student groups. \nAll are welcome. Refreshments will be served.
URL:https://seasevents.nmsdev7.com/event/penn-engineering-connects-a-reception-on-inclusion/
LOCATION:Raisler Lounge (Room 225)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190904T150000
DTEND;TZID=America/New_York:20190904T160000
DTSTAMP:20260408T152138
CREATED:20190726T180154Z
LAST-MODIFIED:20190726T180154Z
UID:10006244-1567609200-1567612800@seasevents.nmsdev7.com
SUMMARY:CBE Seminar: "Embryogenesis: A Cascade of Dynamical Systems"
DESCRIPTION:Abstract: \nWe aim to establish and experimentally test mathematical models of embryogenesis. While the foundation of this research is based on models of isolated developmental events\, the ultimate challenge is to formulate and understand dynamical systems encompassing multiple stages of development and multiple levels of regulation. These range from specific chemical reactions in single cells to coordinated dynamics of multiple cells during morphogenesis. Examples of our dynamical systems models of embryogenesis – from the events in the Drosophila egg to the early stages of gastrulation – will be presented. Each of these will demonstrate what had been learned from model analysis and model-driven experiments\, and what further research directions are guided by these models.
URL:https://seasevents.nmsdev7.com/event/cbe-seminar-towards-a-computable-embryo/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190905T103000
DTEND;TZID=America/New_York:20190905T113000
DTSTAMP:20260408T152138
CREATED:20190823T194000Z
LAST-MODIFIED:20190823T194000Z
UID:10006271-1567679400-1567683000@seasevents.nmsdev7.com
SUMMARY:"Compressive Sensing: From Algorithms to Circuits"
DESCRIPTION:Compressive Sensing is an acquisition technique which relies on the sparsity of the underlying signals\, to enable sampling below the classical Nyquist rate. To do so\, the signals must be acquired in an incoherent way with respect to the sparsity basis\, which is classically obtained in practice by acquiring the signal through projection on a random PAM signal with i.i.d. symbols. \nWe first show that advantages with respect to the above “classical” compressive sensing approach can be achieved by exploiting the fact that\, while sparsity is not under a system designer’s control\, incoherence is\, and therefore flexibility and creativity in implementing compressed sensing systems rely on the strategic design and control of incoherence. To accomplish this\, we then assume that the signals to be acquired are not only sparse\, but also localized\, e.g. for nearly all practical applications\, the signals of interest preferentially occupy a given subspace (for instance they are all low-pass or high-pass in the frequency domain). We show how\, for localized signals\, the acquisition sequences can be designed to maximize their “rakeness\,” that is\, to maximize their capability to collect the energy of the samples during the acquisition phase and increase by several dBs the average SNR achieved in signal reconstruction. \nWe will then describe the design in a 0.18um CMOS technology of the most popular architecture for implementing A/D converters based on compressive sensing\, namely the Random Modulation Pre-Integration (RMPI). We will show that the direct circuit implementation of the classical acquisition scheme exploiting i.i.d sequences leads to a highly suboptimal solution\, and one needs therefore to follow a synergetic design between algorithm-circuit-system. We will show how the use of rakeness-based CS acquisition sequences can reduce the complexity of the implemented A/D from 16 to 8 stages for processing ECG signals and from 64 to 24 for EMG ones. Furthermore\, rakeness-derived sequences also eliminate the necessity for pre- or post-acquisition filtering stages intended to suppress high frequency artifacts and 60-Hz power-line noise interference. \nFinally\, we will show how the use of CS guarantee some level of privacy in information transmission\, which makes the CS signal acquisition paradigm even more suitable for applications in the area of Body Area Networks and Internet of Things.
URL:https://seasevents.nmsdev7.com/event/compressive-sensing-from-algorithms-to-circuits/
LOCATION:PICS Conference Room 534 – A Wing \, 5th Floor\, 3401 Walnut Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190905T104500
DTEND;TZID=America/New_York:20190905T114500
DTSTAMP:20260408T152138
CREATED:20190823T163541Z
LAST-MODIFIED:20190823T163541Z
UID:10006268-1567680300-1567683900@seasevents.nmsdev7.com
SUMMARY:MSE Lab Safety Seminar
DESCRIPTION:
URL:https://seasevents.nmsdev7.com/event/mse-lab-safety-seminar/
LOCATION:Auditorium\, LRSM Building\, 3231 Walnut Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Materials Science and Engineering":MAILTO:johnruss@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190909T143000
DTEND;TZID=America/New_York:20190909T153000
DTSTAMP:20260408T152138
CREATED:20190904T201520Z
LAST-MODIFIED:20190904T201520Z
UID:10006280-1568039400-1568043000@seasevents.nmsdev7.com
SUMMARY:MSE Thesis Defense: “High Loading Oxide Anodes for Lithium Ion Batteries via a Superelastic Graphene Composite Approach”
DESCRIPTION:
URL:https://seasevents.nmsdev7.com/event/mse-thesis-defense-high-loading-oxide-anodes-for-lithium-ion-batteries-via-a-superelastic-graphene-composite-approach/
LOCATION:LRSM 325\, 3231 Walnut St.\, Philadelphia\, PA\, 19104
CATEGORIES:Dissertation or Thesis Defense
ORGANIZER;CN="Materials Science and Engineering":MAILTO:johnruss@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190910T103000
DTEND;TZID=America/New_York:20190910T120000
DTSTAMP:20260408T152138
CREATED:20190826T165741Z
LAST-MODIFIED:20190826T165741Z
UID:10006272-1568111400-1568116800@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Dynamical Systems Approach to Geophysical and Aerospace Flows"
DESCRIPTION:A dynamical systems approach is taken to explain the dynamics of two classes of ‘gap-leaping’ geophysical flow as well as the hypersonic second-mode instability. First\, in the context of a loop current system\, it is shown that multiple steady flow patterns with hysteresis exist and appear to satisfy a cusp catastrophe geometry of solutions. Which state the system assumes (looping or leaping or periodic eddy shedding) and when transitions between states occur\, will be discussed in terms of fundamental vorticity advection and dissipation. Second\, a global perspective of Gulf of Maine circulation leads to a new mechanism for Scotian Shelf Water crossover events. Finally\, by considering an idealized system and an analogy with harmonic oscillators\, a fundamental mechanism for the hypersonic second-mode instability is proposed.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-dynamical-systems-approach-to-geophysical-and-aerospace-flows/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190911T150000
DTEND;TZID=America/New_York:20190911T160000
DTSTAMP:20260408T152138
CREATED:20190729T181355Z
LAST-MODIFIED:20190729T181355Z
UID:10006245-1568214000-1568217600@seasevents.nmsdev7.com
SUMMARY:CBE Seminar: "Complexity in the Chemistry and Physics of Lipid Membranes as a Handle to Activate the Delivery of Cargo to Cells”
DESCRIPTION:Abstract: \nLipid materials having nanostructures that deviate from the conventional flat bilayer arrangement such as hexagonally packed lipid tubes and bi-continuous cubic phases are ubiquitous in nature. Their role remains elusive but over the years several pathologies and organelle functions have been coupled to lipid membrane structural complexity. In this talk\, we will discuss lipid membrane polymorphism and how it can be exploited to generate a new class of materials for the delivery of cargo to cells. We combine a number of techniques including X-ray scattering\, cryo-EM\, and cell culture to demonstrate that the structure of lipid nanoparticles is a powerful handle to boost the delivery of genes to cells. The simple argument that non-lamellar phases having intertwined nanoscale channels exist to increase surface-to-volume ratio might be insufficient to completely describe the experimental findings. \nIf there is time\, we will also introduce the concept of soft-material alloys. Lipids and polymers can mix in hybrid membranes having synergistic dynamical and structural properties; many of which are seen in lipid-protein membrane systems in nature
URL:https://seasevents.nmsdev7.com/event/cbe-seminar-complexity-in-the-chemistry-and-physics-of-lipid-membranes-as-a-handle-to-activate-the-delivery-of-cargo-to-cells/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190913T150000
DTEND;TZID=America/New_York:20190913T160000
DTSTAMP:20260408T152138
CREATED:20190904T133006Z
LAST-MODIFIED:20190904T133006Z
UID:10006278-1568386800-1568390400@seasevents.nmsdev7.com
SUMMARY:PRiML Seminar: "Building Algorithms by Playing Games"
DESCRIPTION:A very popular trick for solving certain types of optimization problems is this: write your objective as the solution of a two-player zero-sum game\, endow both players with an appropriate learning algorithm\, watch how the opponents compete\, and extract an (approximate) solution from the actions/decisions taken by the players throughout the process. This approach is very generic and provides a natural template to produce new and interesting algorithms. I will describe this framework and show how it applies in several scenarios\, and describe recent work that draws a connection to the Frank-Wolfe algorithm and Nesterov’s Accelerated Gradient Descent.
URL:https://seasevents.nmsdev7.com/event/priml-seminar-building-algorithms-by-playing-games/
LOCATION:Room 401B\, 3401 Walnut\, 3401 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Computer and Information Science":MAILTO:cherylh@cis.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190917T103000
DTEND;TZID=America/New_York:20190917T120000
DTSTAMP:20260408T152138
CREATED:20190830T132121Z
LAST-MODIFIED:20190830T132121Z
UID:10006277-1568716200-1568721600@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Engineering Microdevices Using Atomic Layer Deposition and Electrowetting"
DESCRIPTION:This talk will cover 1) devices created one atomic layer at a time and 2) electrowetting optical elements. Atomic layer deposition (ALD) and Atomic Layer Etching (ALE) are self-limiting processes that enable accurate atomic-scale thickness control either through deposition or etching of various materials. We are developing novel manufacturing processes that study how ALD materials can be used to create nano-scale transducers. Example applications include thin film coatings for MEMS\, materials with tunable properties\, nano-scale sensors and actuators. We are also developing liquid optical components based on the electrowetting effect\, where the contact angle of a liquid on a dielectric substrate changes due to applied voltage. Optical lenses and prisms can be fabricated as individual components or as arrays and are electrically addressed by transparent electrodes. By applying a voltage between the liquid and the substrate\, the droplet changes curvature and the liquid interface acts as a variable focus lens or using multiple drive electrodes as a prism. This phenomenon can be used for wavefront compensation in adaptive optics\, communications\, beam steering\, optical switching and microscopy.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-multi-disciplinary-engineering-microsystems-group/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190917T110000
DTEND;TZID=America/New_York:20190917T120000
DTSTAMP:20260408T152138
CREATED:20190806T151855Z
LAST-MODIFIED:20190806T151855Z
UID:10006257-1568718000-1568721600@seasevents.nmsdev7.com
SUMMARY:ESE & Statistics Seminar: "Large Neural Networks: Insights from Linearized Models"
DESCRIPTION:Abstract: Modern machine learning models\, and in particular multilayer neural networks\, exhibit a broad range of puzzling phenomena. Their training requires to minimize a highly non-convex high-dimensional cost function\, and yet it is efficiently addressed using simple gradient descent (GD) or stochastic gradient descent (SGD) algorithms. This model contains more parameters than the number of samples\, and indeed they often are able to achieve zero training error\, i.e. to perfectly interpolate or classify the training data. In fact\, they can achieve zero training error even if the true labels are replaced by random ones.  Despite this fact\, they can generalize well beyond the training set. Finally\, far from being a nuisance or limitation\, this massive over parameterization appears to play an important role in explaining the power of these models. \nI will discuss these phenomena\, and how we can make sense of them by using some simple linear models. Finally\, I will discuss the limitations of these `linear explanations’\, and open challenges.\n[Based on joint work with: Behrooz Ghorbani\, Song Mei\, Theodor Misiakiewicz\, and with Ryan Tibshirani\, Saharon Rosset\, Trevor Hastie]
URL:https://seasevents.nmsdev7.com/event/ese-seminar-andrea-montanari/
LOCATION:PICS Conference Room 534 – A Wing \, 5th Floor\, 3401 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190918T150000
DTEND;TZID=America/New_York:20190918T160000
DTSTAMP:20260408T152138
CREATED:20190806T153639Z
LAST-MODIFIED:20190806T153639Z
UID:10006256-1568818800-1568822400@seasevents.nmsdev7.com
SUMMARY:CBE Seminar: "Evolution of the Conformational-free Energy Landscapes of Proteins"
DESCRIPTION:Abstract: \nOne of the holy grails of drug-design is to obtain high-selectivity binding of a drug to the target protein\, an extremely challenging endeavor for proteins that share high sequence and structural similarity. We investigate several systems of high biological importance to elucidate how selectivity emerged during evolution and how it can inform the design of selective drugs. In particular\, we investigate three protein families\, i.e. human protein kinases\, receptors for plant hormone\, and strigolactone and SWEET transporters. These proteins show several orders of magnitude difference in their ligand affinity\, but share high sequence and structural similarity. This task involves understanding the structure-function relationship of proteins during evolution using advanced computational methods. We show how evolution-based methods such as the combination of reinforcement learning-based adaptive sampling and evolutionary couplings developed in our group could help simulate rare conformational change processes in proteins. In this talk\, we will not only demonstrate the utility of these new techniques to address a key challenge of understanding evolution of ligand perception\, but also the need\, feasibility and impact of computational evolutionary biophysics in understanding the fundamental questions in biology.
URL:https://seasevents.nmsdev7.com/event/cbe-seminar-evolution-of-the-conformational-free-energy-landscapes-of-proteins/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190919T104500
DTEND;TZID=America/New_York:20190919T114500
DTSTAMP:20260408T152138
CREATED:20190823T164050Z
LAST-MODIFIED:20190823T164050Z
UID:10006269-1568889900-1568893500@seasevents.nmsdev7.com
SUMMARY:MSE Professional Development Seminar: "Interviewing with Confidence"
DESCRIPTION:
URL:https://seasevents.nmsdev7.com/event/mse-professional-development-seminar/
LOCATION:Auditorium\, LRSM Building\, 3231 Walnut Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Materials Science and Engineering":MAILTO:johnruss@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190920T120000
DTEND;TZID=America/New_York:20190920T131500
DTSTAMP:20260408T152138
CREATED:20190909T160735Z
LAST-MODIFIED:20190909T160735Z
UID:10006281-1568980800-1568985300@seasevents.nmsdev7.com
SUMMARY:CIS Seminar: "What Society Must Require from AI"
DESCRIPTION:Abstract:  \nArtificial intelligence (AI) algorithms\, especially machine learning (ML) programs\, are now being employed or proposed for use in: \n\na) scanning résumés to weed out job applicants;\nb) evaluating risks children face in their families;\nc) informing judicial decisions about bail\, sentencing\, and parole;\nd) diagnosing medical conditions\, and not just classifying medical images;\ne) identifying faces in the crowd for the police;\nf) caring for seniors;\ng) driving autonomous vehicles; and\nh) guiding and directing drones in seeking to kill terrorists.\n\n  \nI will propose what society must require of algorithms that affect human welfare\, health\, life\, and death.  I shall discuss concepts including reliability\, openness\, transparency\, explainability\, trustworthiness\, responsibility\, accountability\, empathy\, compassion\, fairness\, and justice. \n  \nMy analysis will aid researchers in prioritizing problems for AI and HCI research.  It will also assist policy makers and citizens in determining when and how AI technology should be deployed.
URL:https://seasevents.nmsdev7.com/event/cis-seminar-what-society-must-require-from-ai/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190923T120000
DTEND;TZID=America/New_York:20190923T130000
DTSTAMP:20260408T152138
CREATED:20190912T175005Z
LAST-MODIFIED:20190912T175005Z
UID:10006285-1569240000-1569243600@seasevents.nmsdev7.com
SUMMARY:PSOC Seminar : Collagen architecture regulates metabolic stress and collective invasion
DESCRIPTION:
URL:https://seasevents.nmsdev7.com/event/psoc-seminar-collagen-architecture-regulates-metabolic-stress-and-collective-invasion/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190924T103000
DTEND;TZID=America/New_York:20190924T120000
DTSTAMP:20260408T152138
CREATED:20190827T155816Z
LAST-MODIFIED:20190827T155816Z
UID:10006274-1569321000-1569326400@seasevents.nmsdev7.com
SUMMARY:MEAM Seminar: "Robot Design Concepts for Intuitive Physical Human-robot Interaction"
DESCRIPTION:Physical human-robot interaction (pHRI) aims at taking advantage of the complementary capabilities of robots and humans. One of the key challenges in pHRI is to provide a high-bandwidth human-robot interaction that is safe and intuitive for the human user. To this end\, it is proposed in this work to revisit the design of robots in order to provide a low-impedance mechanical interaction. The concept of macro-mini robotic system is used and applied to interactive robotic devices. Also\, the design of backdrivable redundant parallel robots is considered. In this concept\, parallel robots are used to provide backdrivability while kinematic redundancy is introduced to increase the rotational workspace of parallel mechanisms\, by alleviating the singularities. Solutions based on passive or active human-robot interfaces are proposed and examples of implementations are described. Prototypes of robotics systems developed at Université Laval based on the above concepts are demonstrated.
URL:https://seasevents.nmsdev7.com/event/meam-seminar-robot-design-concepts-for-intuitive-physical-human-robot-interaction/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190924T180000
DTEND;TZID=America/New_York:20190924T190000
DTSTAMP:20260408T152138
CREATED:20190916T212955Z
LAST-MODIFIED:20190916T212955Z
UID:10006288-1569348000-1569351600@seasevents.nmsdev7.com
SUMMARY:Penn Engineering's NSF Fellowship Workshop
DESCRIPTION:Penn Engineering is holding a workshop for students interested in applying for the 2020 National Science Foundation Graduate Research Fellowship (NSFGRF) . \nThe goal of this workshop is to discuss strategies for submitting a strong application\, as well as to connect applicants with mentors to help guide applicants through the process. \nThis event will involve a panel discussion with successful NSF GRF awardees from SEAS and will be moderated by Penn Engineering faculty members. All 1st and 2nd year PhD scholars eligible for submitting an NSF GRF fellowship application are invited to attend.
URL:https://seasevents.nmsdev7.com/event/penn-engineerings-nsf-fellowship-workshop/
LOCATION:Heilmeier Hall (Room 100)\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190925T150000
DTEND;TZID=America/New_York:20190925T160000
DTSTAMP:20260408T152138
CREATED:20190729T182331Z
LAST-MODIFIED:20190729T182331Z
UID:10006246-1569423600-1569427200@seasevents.nmsdev7.com
SUMMARY:CBE Seminar: "Protein-integrated Electronics: From Molecules to Machines”
DESCRIPTION:Abstract: \nWe are developing chemo-mechatronic systems\, structures\, and machines that can transduce signals between the chemical\, mechanical\, and electrical domains to produce intelligent behaviors in response to an external stimuli. Inspired by systems spanning from how tissues build themselves to how animals camouflage\, I will discuss our molecular-level approach to building new materials that can produce tailorable and reversible transformations in response to specific chemical inputs for applications ranging from bio-photonic devices to implantable electronics.
URL:https://seasevents.nmsdev7.com/event/cbe-seminar-protein-integrated-electronics-from-molecules-to-machines/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Chemical and Biomolecular Engineering":MAILTO:cbemail@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20190926T104500
DTEND;TZID=America/New_York:20190926T114500
DTSTAMP:20260408T152138
CREATED:20190912T183057Z
LAST-MODIFIED:20190912T183057Z
UID:10006286-1569494700-1569498300@seasevents.nmsdev7.com
SUMMARY:MSE Seminar: “Topology and Quantum Matter: From Axions to Spintronics”
DESCRIPTION:The confluence of fundamental symmetries and spin-orbit coupling is known to produce emergent electronic states in crystalline solids that are accurately described using the language of topology. This talk provides an overview of this relatively young field of research\, showing how the synthesis and study of topological quantum matter yields a playground for both exotic pursuits at millikelvin temperatures (such as the realization of axion electrodynamics in condensed matter [3]) and pragmatic technologies that work under ambient conditions (such as spintronic devices).
URL:https://seasevents.nmsdev7.com/event/mse-seminar-topology-and-quantum-matter-from-axions-to-spintronics/
LOCATION:Auditorium\, LRSM Building\, 3231 Walnut Street\, Philadelphia\, PA\, 19104\, United States
ORGANIZER;CN="Materials Science and Engineering":MAILTO:johnruss@seas.upenn.edu
END:VEVENT
END:VCALENDAR