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Conferences, Lectures, & Seminars
Events for April
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Dialocalization: Acoustic Speaker Diarization and Visual Localization as Joint Optimization Proble
Thu, Apr 01, 2010 @ 10:00 AM - 11:00 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Abstract:
Research in cognitive psychology suggests that the human brain is able to integrate different sensory modalities, such as sight, sound, and touch, into a perceptual experience that is coherent and unified. Experiments show that by considering input from multiple sensors, perceptual problems can be solved more robustly and even more efficiently. In computer science, however, synergistic use of data encoded for different human sensors has not yet lived up to its promise.In the talk, I present a novel multimodal approach for unsupervised speaker localization in both time and space. Using recordings from a single, low-resolution room overview camera and a single far-field microphone, a state-of-the-art audio only speaker diarization system (speaker localization in time) is extended so that both acoustic and visual models are estimated as part of a joint unsupervised optimization problem. The speaker diarization system first automatically determines the speech regions and estimates "who spoke when", then, in a second step, the visual models are used to infer the location of the speakers in the video. We call this process "dialocalization". The proposed system is able to exploit audio-visual integration to not only improve the accuracy of a state-of-the-art (audio-only) speaker diarization, but also adds visual speaker localization at little incremental engineering and computation costs. The combined algorithm has different properties, such as increased robustness, that cannot be observed in algorithms based on single modalities. The talk describes the algorithm, presents benchmarking results, explains its properties, and systematically discusses the contributions of each modality.Bio:
Dr. Gerald Friedland is a research scientist at the International Computer Science Institute (ICSI), a private research lab affiliated with the University of California Berkeley, where he leads the speaker diarization research projects. He is also the Co-PI on an NGA-funded project on Multimodal Location Detection and a member of the Executive Advisory Board of UC Berkeley's Opencast project.Until recently, he was ICSI's site manager in the EU-funded project AMIDA and the Swiss-funded IM2 project, and former co-PI on the DTO-VACE-funded project ROADMAP, all of which explore multimodal signal analysis to interpret people's behavior in meetings and videoconferences. He has published more than 80 peer-reviewed articles in conferences, journals, and books and is currently authoring a new textbook on multimedia computing together with Dr. Ramesh Jain. Dr. Friedland was program co-chair of the IEEE International Symposium on Multimedia 2008 and 2009. He co-founded the IEEE International Conference on Semantic Computing and is a proud founder and program director of the International Summer School on Semantic Computing at UC Berkeley. He is the recipient of several research and industry recognitions, among them the European Academic Software Award and the Multimedia Entrepreneur Award by the German Federal Department of Economics. Most recently, he led the team that won the ACM Multimedia Grand Challenge 2009. Dr. Friedland received his doctorate (summa cum laude) and master's degree in computer science from Freie Universitaet Berlin, Germany, in 2006 and 2002, respectively.Hosts: Professor Shrikanth Narayanan and Dr. Kyu HanLocation: Ronald Tutor Hall of Engineering (RTH) - 320
Audiences: Everyone Is Invited
Contact: Mary Francis
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Design, Analysis, and Test of Logic Circuits under Uncertainty
Thu, Apr 01, 2010 @ 02:15 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Dr. Smita Krishnaswamy,
IBM, TJ Watson Research CenterAbstract:
Logic circuits are becoming increasingly susceptible to probabilistic behavior caused by external radiation and noise. In addition, inherently probabilistic quantum- and nano-technologies are on the horizon as we approach the limits of CMOS scaling. Ensuring the reliability of such circuits despite the probabilistic behavior is a key challenge in IC design---one that necessitates a fundamental, probabilistic reformulation of synthesis and testing techniques.In this talk, I will present techniques for analyzing, designing, and testing logic circuits with probabilistic behavior. First, I will present a mathematical formulation of reliability analysis using our probabilistic transfer matrix (PTM) algebra for representing probabilistic behavior in gates and circuits. Reliability analysis is a computationally-complex task, and scalability is particularly challenging. To this end, I present two scalable heuristics for approximate analysis in the contexts of testing and reliable design.The first heuristic, involving partial PTM computation, is used to generate tests for probabilistic faults. The second heuristic, known as AnSER, runs in linear time of the size of the circuit, and uses functional-simulation signatures and observability to determine the circuit's soft error rate (SER) accurately. The scalability of AnSER allows us to derive subtle, low-overhead design techniques that improve reliability. These techniques include partial-redundancy identification, guided rewriting, gate relocation, and observability-based retiming. I conclude by briefly covering ongoing research and future directions.Biography:
Smita Krishnaswamy is currently a research staff member in the design automation group at IBM's TJ Watson Research Center, where she works on techniques for incremental design, logic synthesis, and physical synthesis. Her incremental design research has been extensively utilized in production of the P and Z series microprocessor chips.Smita obtained her Ph.D. in computer science and engineering from the University of Michigan, Ann Arbor, in 2008. She has received a 2009 EDAA Outstanding Dissertation Award, and a Best Paper Award at DATE 2005 for her doctoral work. Smita's research interests include fault tolerance, reliability, testing, logic synthesis, and CAD for emerging technologiesHosted by Prof. Sandeep GuptaLocation: Henry Salvatori Computer Science Center (SAL) - -222
Audiences: Everyone Is Invited
Contact: Estela Lopez
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Distinguished Lecture Series: Lars Samuelson
Fri, Apr 09, 2010 @ 10:00 AM - 11:45 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Nanowires: From Materials Science to Physics and Device ApplicationsDr. Samuelson has published nearly 500 papers in refereed journals and given more than 200 invited/plenary talks at international conferences. He is Fellow of the Institute of Physics, FinstP, in the UK, a Member of the Royal Swedish Academy of Sciences, KVA (Physics) and of the Royal Swedish Academy of Engineering Sciences, IVA. In 2008, he was entitled "Einstein Professor" by the Chinese Acad. of Sciences.
Location: Frank R. Seaver Science Center (SSC) - 150
Audiences: Everyone Is Invited
Contact: Gregory Reinhard
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Sparse Representation Methods for Speech and Language Processing
Mon, Apr 12, 2010 @ 10:00 AM - 11:00 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Abstract:
Sparse representation techniques, such as Support Vector Machines (SVMs), k-nearest neighbor (kNN) and Bayesian Compressive Sensing (BCS), can be used to characterize a test sample from a few support training samples in a dictionary set. Traditional Compressing Sensing based methods have been used for signal reconstruction and compression. They have also been successfully applied to the classification of fMRI images. This talk presents our recent work on sparse representations for phonetic classification, speech recognition and text classification in general. The importance of a prior, the sparseness constraint, and choice of the dictionary to this framework will be discussed. Representing a test example as a linear combination of features from the training set allows for a PER on the well-studied TIMIT phone recognition task of 19.0%, which is the best number reported in the literature to-date. Motivated by this result, we also propose a set of features that are a function of the phonetic labels of the original dictionary can be used to create a new representation of the test sample, where the test sample is better linked to the actual units/labels to be recognized.
(Joint work with Tara Sainath, Dimitri Kanevsky and David Nahamoo.)Bio:
Dr. Bhuvana Ramabhadran is the Manager of the Speech Transcription and Synthesis Research Group at the IBM T.J. Watson Center. Upon joining IBM in 1995, she made significant contributions to the ViaVoice line of products focusing on acoustic modeling. She has served as the Principal Investigator of two major international projects: the NSF-sponsored MALACH project, developing algorithms for transcription of elderly, accented speech from Holocaust survivors, and the EUsponsored TC-STAR project, developing algorithms for recognition of EU parliamentary speeches. She has served as the technical chair on conferences, organized workshops, and currently serves on the Speech and Language Technical Committee of the IEEE SPS society. Her research interests include speech recognition algorithms, statistical signal processing, pattern recognition and biomedical engineering.Host: Professor Shrikanth NarayananLocation: Ronald Tutor Hall of Engineering (RTH) - 320
Audiences: Everyone Is Invited
Contact: Mary Francis
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Recent Development in Simultaneous Recognition of 2 or More Speakers Recorded on a Single Microphone
Mon, Apr 12, 2010 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Abstract:
Human listeners are able to selectively tune out all but the speaker of interest when multiple speakers are talking, as in a cocktail-party scenario. We describe a new computational method which, for the first time, can accurately transcribe overlapping speakers better than humans can. This is a breakthrough: it is almost unprecedented for computers to outperform people in any field of perception, audio or visual.Bio:
Peder is currently a manager for the speech engines and algorithms group at IBM's TJ Watson Research Center. He is also serving as a chair of the User Interface Technology Professional Interest Community at IBM. Peder has been doing speech recognition at IBM since 1996 and has published over 50 papers in the area. His work in speech has been very mathematical in nature, as is reflected by an Erdos number (http://www.oakland.edu/enp/) of 3 earned while at IBM. Prior to joining IBM, Peder received a PhD in mathematics from the University of Michigan. There he proved that the existence of our universe is reasonable by showing that the Schrodinger equation is well posed and has a unique solution. Presently Peder lives in Westchester, New York, where he is trying to dissuade 6 foot long snakes from taking up residence under his porch.Host: Professor Shrikanth NarayananLocation: Ronald Tutor Hall of Engineering (RTH) - 320
Audiences: Everyone Is Invited
Contact: Mary Francis
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Exploiting Collective Behavior in Datacenter Storage
Mon, Apr 12, 2010 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
CENG SeminarMithuna Thottethodi, Assistant Professor, Purdue UniversityMonday, April 12, 2010
2:00 – 3:00 p.m.
(RTH -306)Hosted by Prof. Timothy M. PinkstonAbstract:
The storage layer is a significant factor in the capital cost, energy cost and performance of servers and data-centers. Emerging high-performance, low-energy, non-volatile, solid-state storage media show enormous promise to solve two of the three problems (storage performance and energy). However, the high cost-per-byte of solid-state media has hindered wide-spread adoption in servers.
SieveStore is a cost-effective, ensemble-level disk-cache architecture which enables the use of solid-state media to significantly filter access to storage ensembles via two key innovations. First, Sievestore leverages the typical collective behavior of storage ensembles which is quite distinct from the behavior of individual servers in the ensemble.
Second, we show that selective cache allocation – sieving – is fundamental to enable efficient ensemble-level disk-caching. We find that the two components (sieving and ensemble-level caching) each contribute to SieveStore's cost-effectiveness. SieveStore is effective in achieving significantly higher hit ratios than unsieved ensemble-level disk-caching (35%-50% more, on average) while using only 1/7th the number of SSD drives as unsieved, ensemble-level disk-caches.
Further, ensemble-level caching is a strictly superior cost-performance point compared to per-server caching.Biography:
Mithuna Thottethodi is an assistant professor with the School of Electrical and Computer Engineering at Purdue University. His research interests include multicore memory hierarchies and interconnection networks, microarchitecture, datacenters and large storage systems, and programmable microfluidics. He was awarded the National Science Foundation's CAREER award in 2007. He received the Eta Kappa Nu (HKN Beta Chapter) Outstanding Professor award in Fall 2004 and the Ruth And Joel Spira Outstanding Teacher award in 2006. He received his Ph.D. in 2002 from Duke University.Location: Ronald Tutor Hall of Engineering (RTH) - -306
Audiences: Everyone Is Invited
Contact: Janice Thompson
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Service Orientation: Software Engineering issues beyond Architecture
Mon, Apr 12, 2010 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Dr. Srinivas Padmanabhuni, Principal Research Scientist, Infosys SETLabsMonday, April 12
2:00 – 3:00 p.m. (HED-116)Hosted by Prof. Viktor K. Prasanna Abstract: Service Oriented Architecture (SOA) is an emergent software architectural trend predicated upon the notion of "service", as a first class software unit for software construction. In this talk, we shall explore the upcoming area of Service Oriented Software Engineering (SOSE), covering software engineering research issues for the different life cycle stages of SOSE based software construction: Service identification, Service based design, Service Contract based Development, Service Based Testing, Service Evolution and Change Management. We shall cover a overview of the diverse Software Engineering issues therein, we shall present our research on the following areas in depth:
1. SOSE process: We present briefly the common approaches of top-down, middle out and bottom up approaches
to SOSE, our focus shall be to present the commonly prevalent business process driven approach to service lifecycle. The key advantage of such an approach is the right sizing and business facing services we shall be able to derive and work with as part of the SOSE approach.
2. Service Identification: A key aspect of service orientation in our approach as above is its close relation to
Business Process Architectures, and we present a homegrown approach to harvesting services from Business processes.
3. Composite Applications: While SOA advocates service based design and reuse at design level, a key practical
requirement in building real SOA based systems is in being able to efficiently combine reuasable services, with custom software, giving rise to new software application trend termed as Composite Applications.
4. Service Evolution and Change Management: We present a plethora of challenges in Service governance and
maintenance, and cover some typical and proprietary approaches for service change management.
5. Service Mining: A key aspect of SOA is the possibilities it offers for legacy systems extension. Key challenges there involve mining of services from legacy portfoliosBiography: Dr. Srinivas Padmanabhuni is a Principal Researcher at Software Engineering and Technology Labs (SETLabs), the R and D arm of Infosys Technologies Limited, Bangalore, India. He supervises the Software Engineering and Distributed Computing research labs in SETLabs at Infosys. Dr. Srinivas specializes in Web services, Service Oriented Architecture, Business Process Management, and Grid technologies alongside pursuing interests in semantic web, autonomic computing, intelligent agents, and enterprise architecture. He has been selected for Who's Who in Asia 2007 first edition, in addition to being nominated for Who is Who in the World and Americas 2009 editions. He serves on editorial board of journals and program committees for international conferences in area of web services, SOA, and Software Engineering. He has authored several papers in international conferences including AAAI, ICWS, SCC, GITMA,APSEC,ISEC, and others. He is currently the chairperson of ACM bangalore chapter. He has served on program committees for several international conferences and workshops including ICWS (International Conference of Web Services), PricAI (Pacific Rim International Conference on AI), NWeSP (International Conference on Next Generation Web Services Practices), Indian Conference on Software Engineering (ICSE) etc. He has given numerous invited speeches at varied industry and academic forums including IEEE and ACM forums, industry CIO seminars like MINDEF CIO Summit, conferences including APSEC, ICWA etc. and architect forums like IASA. He has also authored books and book chapters and articles in some leading professional journals. Prior to Infosys, Dr. Srinivas has worked in multiple capacities in startups out of Canada and USA. Dr. Srinivas holds a doctorate degree in computing science from University of Alberta, Edmonton, Canada. Prior to Ph.D he secured his B.Tech and M.Tech in computer science from Indian Institutes of Technology at Kanpur and Mumbai respectively.Location: Hedco Petroleum and Chemical Engineering Building (HED) - -116
Audiences: Everyone Is Invited
Contact: Janice Thompson
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Multi-Model Unfalsified Adaptive Switching Supervisory Control
Tue, Apr 13, 2010 @ 10:00 AM - 11:00 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Dr. Simone Baldi
Università degli Studi di Firenze (University of Florence)
Abstract:
In recent years, adaptive switching supervisory control (ASSC) has emerged as an alternative to conventional
continuous adaptation for dealing with control of uncertain plants. The proposed approach consists of
embedding, in the so-called unfalsified adaptive switching supervisory control (UASSC) schemes, a family of
nominal models pairwise associated with the given candidate controllers, and allow to deal with the problem of
inferring on-line stability of a potential control-loop consisting of an uncertain plant interconnected in feedback
with a candidate controller, using plant I/O pairs recorded while the plant is possibly driven by a different
controller.
The result is that the supervised switching mechanism can moderate the chance that destabilizing controllers be
switched-on and, hence, reduce both the magnitude and time durations of "learning" transients after start-up,
while, in contrast with pre-existing multi-model based methods, stability in-the-large is guaranteed under the
minimal conceivable assumption that a stabilizing candidate controller exist.
Bio:
Simone Baldi received the B.S. degree in Electronics Engineering in 2005 and the M.S. degree in Automatic
Systems Control Engineering in 2007, both from the University of Florence. Thereafter, he has been with the
Dipartimento di Sistemi e Informatica, University of Florence, where he is currently a Ph.D. student. His
research interests are inLocation: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Shane Goodoff
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
[Photonics Seminar] Plasmonic Super Resolution Imaging
Thu, Apr 15, 2010 @ 01:00 PM - 02:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Prof. Zhaowei Liu, UCSDAbstract:
The imaging resolution of conventional optical lens system is limited by the diffraction to a few hundreds of nanometers. Emerging artificially engineered plasmonic metamaterials offer a new possibility to build superlenses that overcome such a limit. In this talk I will review some of our work on the far-field superlens (FSL) and optical hyperlens that are able to transfer super resolution image to the far field. Other plasmonic based techniques such as plasmonic structured illumination microscopy (PSIM), plasmonic dark field (PDF) microscopy will also be discussed.Bio:
Zhaowei Liu is an Assistant Professor in the Electrical and Computer Engineering Department at UCSD. He received his Ph.D. in Mechanical and Aerospace Engineering (MEMS/Nanotechnology) from UCLA in 2006, and was subsequently a postdoctoral researcher in NSF Nanoscale Science & Engineering Center (NSEC) and Mechanical Engineering at UC Berkeley. In 2008 he joined the faculty at UCSD. His research is primarily in the fields of nanophotonics, super-resolution imaging and sensing, metamaterials, plasmonics, and micro/nanofabrication. He is a recipient of the 2010 SME Outstanding Young Manufacturing Engineer Award.Host: Prof. Michelle Povinelli
Location: EE 248
Audiences: Everyone Is Invited
Contact: Jing Ma
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Architectural and Circuit-Level Design Techniques for Power and Temperature Optimizations in On-Chip
Wed, Apr 21, 2010 @ 01:00 PM - 02:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Hosted by Prof Timothy M. PinkstonSpeaker: Houman Homayoun, University of California, IrvineAbstract:
In order to reduce register file's peak temperature in an embedded processor, we propose RELOCATE: an architectural solution which redistributes the access pattern to physical registers through a novel register allocation mechanism. The goal is to keep some partitions unused (idle) and cooling down. The temperature of idle partitions is further reduced by power gating them into destructive sleep mode to reduce their leakage power. The redistribution mechanism changes the active region periodically to modulate the activity within the register file and prevent the active region from heating up excessively. Our approach resulted in an average reduction of 8.3°C in the register file's peak temperature for standard benchmarks.Also, recent studies have shown that peripheral circuits, including decoders, wordline drivers, input and output drivers, contribute a large fraction of the overall cache leakage. In addition, as technology migrates to smaller geometries, leakage contribution to total power consumption increases faster than dynamic power, indicating that leakage will be a major contributor to overall power consumption. This work also proposes a combination of circuit and architectural techniques to maximize leakage power reduction in embedded processor's on-chip caches by targeting leakage in cache peripheral circuits. Experimental results indicate that the proposed techniques can keep the L1 cache peripherals in one of the low-power modes for more than 85% of total execution time, on average. This translates to an average leakage power reduction of 50% for 65nm technology. The DL1 cache energy-delay product is reduced, on average, by 20%. The overall processor power is reduced by up to 8.7% (an average of 5.3%). Biography:
Houman Homayoun is a PhD student in the department of computer science at the University of California, Irvine. His research is on power-temperature and reliability-aware memory and processor design optimizations and spans the areas of computer architecture and circuit design. From 2006 to 2007 he was working in Novelics, a leading provider of system-on-chip (SoC) embedded memory, where he was the principle architect of a parametrizable BIST microprocessor. The chip was successfully taped-out and delivered in 130, 90 and 65nm. Homayoun received his BS degree in electrical engineering in 2003 from Sharif University of Technology, Tehran, Iran. He received his MS degree in computer engineering in 2005 from University of Victoria, Canada.
Location: Hughes Aircraft Electrical Engineering Center (EEB) - -248
Audiences: Everyone Is Invited
Contact: Janice Thompson
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Nanoelectronics in Retrospect, Prospect, and Principle
Thu, Apr 22, 2010 @ 02:00 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Dr. James D. Meindl - Professor of Microelectronics, Georgia Institute of TechnologyThe information revolution has been the paramount economic development of the past five decades. Its principal driver has been silicon microchip technology, which has advanced in productivity by a factor of approximately one billion and in performance, for example of a microprocessor chip, by a factor of nearly one million. These concurrent advances have been implemented by a synergistic fusion of top-down directed assembly microtechnology (or scaling currently to the 25-50 nm range) and bottom-up self assembly nanotechnology producing 300 mm diameter single crystal ingots of silicon. CMOS dynamic power-delay product is projected to continue to benefit from scaling but static gate tunneling current and subthreshold channel leakage current, device parameter manufacturing tolerances and interconnect latency, severely aggravated by resistivity increases due to size effects in copper, progressively degrade from scaling. Consequently, novel ancillary technologies including: 1) increased chip input/output (I/O) interconnect density providing improved electrical and optical I/O bandwidth; 2) enhanced heat removal, for example through microchannel fluidic cooling; and 3) 3D chip stacking with through silicon vias to reduce multi-core microprocessor to off-chip cache memory interconnect lengths are now projected as critical means of prolonging the exponential rate of advance of silicon microchip technology. Following anticipated saturation of this advance early in the 2020 decade, a new genre of nanoelectronics is a coveted goal and one leading candidate appears to be graphene, particularly due to its ballistic carrier transport, adjustable energy band gap of nanoribbons, susceptibility to fusion of top-down and bottom-up nanotechnology and potential for 3D monolithic integration. However, we have not yet witnessed in graphene the 21st century equivalents of two Nobel Prize winning inventions, the transistor and the integrated circuit. Dr. Meindl is the founding Director of the Marcus Nanotechnolgy Research Center, Director of the Pettit Microelectronics Research Center and Pettit Chair Professor at the Georgia Institute of Technology. In 2007 Meindl was awarded Eminent Member of Eta Kappa Nu. He is a Life-Fellow of the IEEE, and a member of the American Academy of Arts and Sciences and the National Academy of Engineering. Meindl received the 2006 IEEE Medal of Honor, the 2004 SRC Aristotle Award, first place on the 2003 IEEE International Solid State Circuits Conference 50-Year Anniversary Author Honor Roll, and the 1999 SIA University Research Award. He received his bachelor's, master's, and doctor's degrees in electrical engineering, from the Carnegie Institute of Technology (Carnegie Mellon University).
Location: Seeley G. Mudd Building (SGM) - 101
Audiences: Everyone Is Invited
Contact: Marilyn Poplawski
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Sending a Photon Backwards in Time
Fri, Apr 23, 2010 @ 02:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Distinguished Lecturer SeriesDr.Seth Lloyd -Massachusetts Institute of TechnologyAbstract:
Ever since Einstein, physicists have argued about whether time travel is consistent with the laws of physics, and, if so, how it might be accomplished. This talk presents a new theory of time travel based on quantum teleportation. Unlike previous theories, the theory can be tested experimentally. I report on an experimental realization of the "grandfather paradox:" we send a photon a few billionths of a second backwards in time and have it try to "kill" its previous self.Biography:
Seth Lloyd was the first person to develop a realizable model for quantum computation and is currently working with a variety of groups to construct and operate quantum computers and quantum communication systems. Dr. Lloyd is the author of over one hundred scientific papers, and of Programming the Universe, (Knopf, 2004). He is currently the director of the W.M. Keck Center for Extreme Quantum Information Theory (xQIT) at the Massachusetts Institute of Technology.Location: Henry Salvatori Computer Science Center (SAL) - vatori Auditorium (SAL-101)
Audiences: Everyone Is Invited
Contact: Estela Lopez
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Secure Collision-Free Frequency Hopping for STC-OFDM Based Wireless Networks
Tue, Apr 27, 2010 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Leonard E. Lightfoot,
Michigan State University,
Department of Electrical & Computer EngineeringAbstract: With the majority of today's transactions and communications relying heavily on wireless networks, the security threats of malicious jamming, detection, and interception are no longer limited to military applications. In fact, security is the key enabler for present and future high speed wireless networks. Patching or add-on security maybe effective in short term, but is far from adequate for addressing the needs on wireless security and can greatly complicate the communication systems. In our research, we focus on the fundamental study of developing a spectrally efficient and inherently secure wireless system by exploiting multiple diversity techniques.We propose an innovative spectrally efficient, jamming-resilient wireless scheme by exploiting the joint space-time and frequency diversity. Existing anti-jamming systems such as frequency hopping (FH) rely heavily on rich time-frequency diversity over large spread spectrums. Mainly limited by multiuser interference, the spectral efficiency of existing jamming resistant systems are very low due to inefficient use of the large bandwidth. While these systems work reasonably well for voice centric communications which only requires relatively narrow bandwidth, their low spectral efficiency can no longer provide sufficient capacity for today's high speed multimedia wireless services. In this research, (i) we develop a collision-free frequency hopping (CFFH) system based on the orthogonal frequency division multiplexing (OFDM) framework and the secure subcarrier assignment algorithm. The proposed subcarrier assignment algorithm is designed to ensure that malicious users cannot predict or repeat the hopping pattern of the authorized users and hence cannot launch follower jamming attacks; (ii) We improve the performance of the CFFH system under random jamming, by enhancing the system diversity through space-time coding, and introduce the space-time coded collision-free frequency hopping (STC-CFFH) system. Our analysis indicates that the proposed scheme is both highly efficient and very robust under various jamming scenarios. The proposed approach breaks new ground in the design and development of secure high speed wireless communication systems. Biography: Dr. Leonard Lightfoot received his B.S degree in Computer Engineering from Xavier University of Louisiana, New Orleans, LA in May 2004. Upon completing his B.S. degree in 2004, he began his graduate studies at Michigan State University, East Lansing, MI, where he received his M.S and Ph.D. degrees in Electrical Engineering in December 2006 and March 2010, respectively. In July 2010, Leonard will join the research team in the Sensors Directorate at the Air Force Research Laboratory located in Dayton, Ohio. Leonard's current research interest includes developing and designing highly efficient and reliable wireless communications, and network security.Host: Michael Neely, neely@usc.edu, EEB 520, 213-740-3505
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Investment in Technology Development and Technology Transfer in the Arab world: Opportunities & chal
Thu, Apr 29, 2010 @ 10:00 AM - 11:30 AM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Hosted by Prof. Cauligi RaghavendraSpeaker: Alaya Bettaieb, Director Arab Academic Tech Transfer project at the Arab Science & Technology Foundation; Manager of MENA Technology Fund (raising); Former Chairman, Tunisia Venture Capital AssociationAbstract:
Last June, President Obama visited Cairo and delivered a landmark speech to the Muslim and Arab world, meant to launch a new era of US engagement for the development of better political cultural and business relations. A crucial part of his strategy was the announcement of multi-million dollars technology fund, centers of excellence, and technology transfer assistance for Muslim-majority countries, designed to jumpstart a new knowledge economy and forge business ties that can bridge cultures. Indeed, the Arabic-speaking world represents a vast untapped customer base of more than 320 million people, with a global market size of hundreds billion dollars and a high forecasted growth rate. Biography:
Mr. Bettaieb, former chairman of the Tunisian Venture Capital Association, and director of the Arab Academic Technology Transfer project within the Arab Science & Technology Foundation, will present Thursday 29 April, in a lecture entitled: "Investment in Technology development and technology transfer in the Arab world : Opportunities & challenges", the state of Technology development, investment and transfer in the Middle East & Northern Africa "MENA" region, with both identified opportunities and emerging challenges facing such development.Location: Hughes Aircraft Electrical Engineering Center (EEB) - -248
Audiences: Everyone Is Invited
Contact: Janice Thompson
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Strategic Research and Innovation: An Excited-State Lifetime of 40 Years at AT&T Bell Labs
Thu, Apr 29, 2010 @ 12:30 PM - 01:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Tingye Li,
Formerly of AT&T LabsRefreshments will be providedAbstract: Strategic research may be regarded as work that is focused on producing viable advances and innovations in a particular field. It can be fundamental or applied, but always involves having realistic goals in mind, an understanding of physics and limitations, and an appreciation for application issues. It is often associated with a vision that could launch a new technical direction and lead to innovations that engender significant industrial and societal impact. Innovation, on the other hand, is a process by which ideas or concepts are translated into viable applications. The innovative process can initially be a one-person or small-group effort, but later will involve usually a large-scale, institutionally-supported, team endeavor, driven by significant and measurable operational and economical gains. In this talk, I shall relate my experiences and observations of world-class strategic research and innovation in the field of optical fiber communications at AT&T Bell Laboratories as a participant over an excited-professional-state lifetime of 40 years.Biography: Tingye Li retired from AT&T in 1998. Until then, he was a Division Manager in the Communications Infrastructure Research Laboratory of AT&T Laboratories in New Jersey. Since joining AT&T Bell Laboratories in 1957, he has worked in the areas of antennas, microwave propagation, lasers and optical communications, in which he has contributed more than 100 journal papers, patents, books and book chapters. His early work on laser resonator modes established the basis for the understanding of laser operation and is considered a classic. Since the late 1960s, he and his groups have been engaged in pioneering research on lightwave technologies and systems, which are now ubiquitously deployed in telecommunications infrastructures worldwide. His work with his colleagues on amplified wavelength-division-multiplexed transmission systems has revolutionized lightwave communications.He holds a Ph.D. degree from Northwestern University. He is a Fellow of the OSA, IEEE, AAAS, Photonic Society of Chinese-Americans, and International Engineering Consortium. He is a member of the National Academy of Engineering, the Academia Sinica (Taiwan) and a Foreign Member of the Chinese Academy of Engineering. He has received the IEEE Baker Prize, IEEE David Sarnoff Award, OSA/IEEE John Tyndall Award, OSA Frederic Ives Medal/Jarus Quinn Endowment, AT&T Science and Technology Medal, IEEE Photonics Award, and IEEE Edison Medal. He was named an honorary professor at many prestigious universities in China and Taiwan. He has been active in various professional societies, and was President of the Optical Society of America in 1995.Host: Prof. Alan Willner, willner@usc.eduLocation: Charles Lee Powell Hall (PHE) - 223
Audiences: Everyone Is Invited
Contact: Gerrielyn Ramos
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
[Photonics Seminar] Photonics based Telemedicine Technologies toward Smart Global Health Systems
Thu, Apr 29, 2010 @ 01:00 PM - 02:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Prof. Aydogan Ozcan, UCLAAbstract:
Most of these existing cellphones are already equipped with advanced digital imaging and sensing platforms that can be utilized for various health monitoring applications. This impressive advancement is one of the central building blocks of the emerging fields of ¡°Telemedicine¡± and ¡°Wireless Health¡±. I will introduce new imaging and detection architectures that can compensate in the digital domain for the lack of complexity of optical components by use of novel theories and numerical algorithms to address the immediate needs and requirements of Telemedicine for Global Health Problems. Specifically, I will present an on-chip cytometry and microscopy platform that utilizes cost-effective and compact components to enable digital recognition and 3D microscopic imaging of cells with sub-cellular resolution over a large field of view without the need for any lenses, bulky optical components or coherent sources such as lasers. This incoherent holographic imaging and diagnostic modality has orders of magnitude improved light collection efficiency and is robust to misalignments which eliminates potential imaging artifacts or the need for realignment, making it highly suitable for field use.Bio:
Dr. Aydogan Ozcan received his Ph.D. degree at Stanford University Electrical Engineering Department in 2005. After a short post-doctoral fellowship at Stanford University, he is appointed as a Research Faculty Member at Harvard Medical School, Wellman Center for Photomedicine in 2006. Dr. Ozcan joined UCLA in the summer of 2007 as an Assistant Professor, where he is currently leading the Bio-Photonics Laboratory at the Electrical Engineering Department. In 2009, Dr. Ozcan received the NIH Director¡¯s New Innovator Award, the Office of Naval Research (ONR) Young Investigator Award, the IEEE Photonics Society (LEOS) Young Investigator Award and the MIT¡¯s TR35 Award for his seminal contributions to near-field and on-chip imaging, and telemedicine based diagnostics. Prof. Ozcan is also the recipient of the 2010 Netexplorateur Award given by the Netexplorateur Observatory and Forum in France, and the 2009 Wireless Innovation Award organized by the Vodafone Americas Foundation as well as the 2008 Okawa Foundation Award, given by the Okawa Foundation in Japan.Host:
Prof. Michelle PovinelliLocation: EE 248
Audiences: Everyone Is Invited
Contact: Jing Ma
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor. -
Integrated Systems Seminar Series
Fri, Apr 30, 2010 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Speaker: Prof. Luke Theogarajan, UCSBTopic: CMOS for Biomedical Application
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Hossein Hashemi
This event is open to all eligible individuals. USC Viterbi operates all of its activities consistent with the University's Notice of Non-Discrimination. Eligibility is not determined based on race, sex, ethnicity, sexual orientation, or any other prohibited factor.
