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DTSTART;TZID=America/New_York:20200303T103000
DTEND;TZID=America/New_York:20200303T120000
DTSTAMP:20260408T011042
CREATED:20200226T145623Z
LAST-MODIFIED:20200226T145623Z
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SUMMARY:MEAM Seminar: "Multiscale Interactions in Multiphase Turbulent Flows: Fundamentals to Applications"
DESCRIPTION:Recent advances in experimental measurements and numerical simulations has allowed us to discover new phenomena in multiphase turbulence (a flow regime characterized by chaotic and irregular motion in the presence of immersed surfaces/bodies). In this talk\, I will discuss some of these new discoveries and their importance both from a fundamental and an application viewpoint. I will first present our finding of a surprising fluctuation-induced force between two plates immersed in a turbulent fluid. The mechanism of force generation reveals an intriguing analogy with the quantum Casimir effect. Next\, I will discuss how multiscale interactions between immersed bodies/surfaces and a carrier turbulent fluid can lead to drag reduction in the context of Taylor-Couette flows. I will conclude by showing some recent advances in our understanding of the role of turbulence in bio-physical flows (e.g. Cardio-vascular flow).
URL:https://seasevents.nmsdev7.com/event/meam-seminar-multiscale-interactions-in-multiphase-turbulent-flows-fundamentals-to-applications/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Mechanical Engineering and Applied Mechanics":MAILTO:meam@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20200303T110000
DTEND;TZID=America/New_York:20200303T120000
DTSTAMP:20260408T011042
CREATED:20200205T154508Z
LAST-MODIFIED:20200205T154508Z
UID:10006397-1583233200-1583236800@seasevents.nmsdev7.com
SUMMARY:ESE Seminar: "Safe Real-World Autonomy in Uncertain and Unstructured Environments"
DESCRIPTION:Abstract  \nIn this talk I will present my current and future work towards enabling safe real-world autonomy. My core focus is to enable efficient and safe decision-making in complex autonomous systems\, while reasoning about uncertainty in real-world environments\, including those involving human interactions. \nFirst I will discuss safety for complex systems in simple environments. Traditional methods for generating safety analyses and safe controllers struggle to handle realistic complex models of autonomous systems\, and therefore are stuck with simplistic models that are less accurate. I have developed scalable techniques for theoretically sound safety guarantees that can reduce computation by orders of magnitude for high-dimensional systems\, resulting in better safety analyses and paving the way for safety in real-world autonomy. \nNext I will add in complex environments. Safety analyses depend on pre-defined assumptions that will often be wrong in practice\, as real-world systems will inevitably encounter incomplete knowledge of the environment and other agents. Reasoning efficiently and safely in unstructured environments is an area where humans excel compared to current autonomous systems. Inspired by this\, I have used models of human decision-making from cognitive science to develop algorithms that allow autonomous systems to navigate quickly and safely\, adapt to new information\, and reason over the uncertainty inherent in predicting humans and other agents. Combining these techniques brings us closer to the goal of safe real-world autonomy.
URL:https://seasevents.nmsdev7.com/event/ese-seminar-safe-real-world-autonomy-in-uncertain-and-unstructured-environments/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20200303T150000
DTEND;TZID=America/New_York:20200303T160000
DTSTAMP:20260408T011042
CREATED:20200219T201529Z
LAST-MODIFIED:20200219T201529Z
UID:10006412-1583247600-1583251200@seasevents.nmsdev7.com
SUMMARY:CIS Seminar: "Breaking and Building End-to-End Encrypted Systems"
DESCRIPTION:Abstract\n\nToday’s computer systems and their owners fail to protect data. Exacerbating this are new threats stemming from the rise of cloud computing. The consequences are dire: sensitive information like financial statements\, medical records\, and private messages are disclosed to malicious parties. In my research at the intersection of security\, cryptography\, and systems\, I work to change this by breaking and building efficient end-to-end (E2E) encrypted systems\, which protect data by keeping it encrypted throughout processing and storage. In this talk\, I’ll explain some of the flaws I’ve found in existing E2E-encrypted systems deployed to billions of users\, how the flaws have led me to a new methodology for building these systems that’s rooted in co-design of cryptography and systems\, and some of the new E2E-encrypted systems I’m building.
URL:https://seasevents.nmsdev7.com/event/cis-seminar-breaking-and-building-end-to-end-encrypted-systems/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Colloquium
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20200305T110000
DTEND;TZID=America/New_York:20200305T120000
DTSTAMP:20260408T011042
CREATED:20200205T155655Z
LAST-MODIFIED:20200205T155655Z
UID:10006398-1583406000-1583409600@seasevents.nmsdev7.com
SUMMARY:ESE Seminar: "Joint Wireless Communication and Sensing in Terahertz Spectrum"
DESCRIPTION:Abstract\nMillimeter-wave and terahertz bands are emerging as the most promising spectrum to meet the data-rate and latency demands of future wireless applications\, including virtual reality and autonomous cars. Moreover\, large spectral availability and mm-scale wavelength provide the possibility for ubiquitous and high-resolution sensing. My research builds a foundation for joint communication and sensing in such high-frequency regimes. This perspective yields a paradigm shift in the design and development of future wireless systems. In this talk\, I will present the world’s first single-shot and single-antenna motion sensing system in THz bands. We demonstrate a novel node architecture exploiting a single leaky wave antenna\, which is primarily used for beam steering in THz networks. I will show how we leverage this device’s spatial-spectral characteristics in new ways to enable motion sensing functionalities with a single THz pulse transmission. I will then discuss the opportunities offered by this platform to enhance next-generation communication in unprecedented ways. In particular\, we tackle the mobility\, blockage\, and scalability challenges of highly directional THz networks by efficiently adapting steering direction for mobile users. Finally\, I will share several research directions that I would like to pursue in the future.
URL:https://seasevents.nmsdev7.com/event/ese-seminar-joint-wireless-communication-and-sensing-in-terahertz-spectrum/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20200305T120000
DTEND;TZID=America/New_York:20200305T130000
DTSTAMP:20260408T011042
CREATED:20200109T163814Z
LAST-MODIFIED:20200109T163814Z
UID:10006367-1583409600-1583413200@seasevents.nmsdev7.com
SUMMARY:BE Seminar: "Engineering Stem Cells to Create Novel Delivery Vehicles"
DESCRIPTION:Synthetic biology has transformed how cells can be reprogrammed\, providing a means to reliably and predictably control cell behavior with the assembly of genetic parts into more complex gene circuits. Using approaches and tools in synthetic biology\, we are programming stem cells with novel genetic tools to control genes and pathways that result in changes in stem cell fate decisions\, in addition to reprogramming terminally differentiated cells to function as unique therapeutic diagnostic and delivery vehicles.
URL:https://seasevents.nmsdev7.com/event/be-seminar-title-tbc-3/
LOCATION:Room 337\, Towne Building\, 220 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Seminar
ORGANIZER;CN="Bioengineering":MAILTO:be@seas.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20200305T150000
DTEND;TZID=America/New_York:20200305T160000
DTSTAMP:20260408T011042
CREATED:20200220T190835Z
LAST-MODIFIED:20200220T190835Z
UID:10006413-1583420400-1583424000@seasevents.nmsdev7.com
SUMMARY:CIS Seminar: "Building Data-Driven Computers: Reimagining Systems to Reduce the High Costs of Large-Scale Data Processing"
DESCRIPTION:Abstract: \nA wide range of application domains are emerging as computing platforms of all types become more ubiquitous in society.  Many of these applications are data centric\, and spend a significant fraction of their time on accessing and processing very large datasets.  Examples of these applications include graph frameworks\, precision medicine\, computer vision\, deep learning\, and mobile device workloads.  Unfortunately\, the hardware platforms executing these applications remain compute centric\, and are rooted in decades-old design principles for computer architectures.  Running modern data-centric applications on compute-centric platforms results in high inefficiencies\, with significant energy waste and program stalls.  Data-centric platforms can eliminate these inefficiencies\, but require the community to fundamentally rethink our approach to computer design. \nIn this talk\, I will present a holistic approach for developing practical data-centric architectures and systems.  I will begin by using experimental characterization to identify the sources of poor energy efficiency and poor performance in existing architectures as they run modern applications\, focusing on the impact of current memory systems.  Next\, I will show how near-data computing can mitigate these inefficiencies.  Recent breakthroughs in memory technologies have made near-data computing a practical and viable alternative to compute-centric platforms\, but several system-level challenges remain.  I will present a few of my representative efforts towards developing practical programmer and architectural support for near-data computing\, including efficient data coherence and domain-specific system design.  I will conclude the talk with my future research vision\, on developing and building full-system data-driven architectures that are optimized for energy efficiency.  This includes microarchitectural and circuit-level support for in-memory computing using emerging non-volatile memories\, cooperative hardware–software memory management\, and compiler and data optimizations that allow programmers to effortlessly target these data-driven architectures. \n 
URL:https://seasevents.nmsdev7.com/event/cis-seminar-building-data-driven-computers-reimagining-systems-to-reduce-the-high-costs-of-large-scale-data-processing/
LOCATION:Wu and Chen Auditorium (Room 101)\, Levine Hall\, 3330 Walnut Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Computer and Information Science":MAILTO:cherylh@cis.upenn.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20200306T110000
DTEND;TZID=America/New_York:20200306T120000
DTSTAMP:20260408T011042
CREATED:20200207T172144Z
LAST-MODIFIED:20200207T172144Z
UID:10006404-1583492400-1583496000@seasevents.nmsdev7.com
SUMMARY:ESE Seminar: "Integrated Optical Phased Arrays: LiDAR\, Augmented Reality\, and Beyond"
DESCRIPTION:Abstract\nBy enabling optical microsystems with new functionalities\, improved system performance\, and reduced size\, weight\, and power\, integrated photonics is positioned to enable next-generation optical technologies that facilitate revolutionary advances for numerous fields spanning science and engineering\, including computing\, sensing\, communications\, displays\, quantum\, and biology. \nAn emerging class of integrated photonic systems is integrated optical phased arrays\, which enable manipulation and dynamic control of free-space light in a compact form factor\, at low costs\, and in a non-mechanical way. As such\, integrated optical phased arrays have emerged as a promising technology for many wide-reaching applications\, including light detection and ranging (LiDAR) for autonomous vehicles\, augmented-reality displays\, free-space optical communications\, and trapped-ion quantum computing. \nThis talk will present recent advances in integrated optical phased array architectures\, results\, and applications. First\, the first beam-steering optical phased arrays monolithically integrated with on-chip rare-earth-doped lasers and heterogeneously integrated with CMOS driving electronics will be shown and the first single-chip coherent integrated LiDAR results will be presented; these demonstrations are important steps towards practical commercialization of low-cost and high-performance integrated LiDAR sensors for autonomous vehicles. Next\, the first integrated optical phased arrays that focus radiated light to tightly- confined spots in the near field and that generate quasi-Bessel beams will be discussed; these near-field modalities have the potential to advance a number of application areas\, such as optical trapping for biological characterization\, trapped-ion quantum computing\, and laser-based 3D printing. Finally\, a novel transparent integrated-phased-array-based holographic display will be proposed as a highly-discreet and fully-holographic solution for the next generation of augmented-reality head-mounted displays; the first integrated passive near-eye displays that generate holograms\, the first integrated visible-light liquid crystal-based modulators\, and the first actively-tunable visible-light integrated phased arrays will be presented.
URL:https://seasevents.nmsdev7.com/event/ese-seminar-integrated-optical-phased-arrays-lidar-augmented-reality-and-beyond/
LOCATION:Berger Auditorium (Room 13)\, Skirkanich Hall\, 210 South 33rd Street\, Philadelphia\, PA\, 19104\, United States
CATEGORIES:Colloquium
ORGANIZER;CN="Electrical and Systems Engineering":MAILTO:eseevents@seas.upenn.edu
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