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SUNMONTUEWEDTHUFRISAT
Conferences, Lectures, & Seminars
Events for January
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Measuring Strain in the Carotid Arteries using DENSE MRI
Wed, Jan 10, 2007 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Abstract:
The wall of major arteries undergoes cyclic stretching from the loading of the pulsatile arterial pressure. Atherosclerotic lesions have been shown to localize to regions of excessive stretching of the arterial wall. We developed a displacement-encoded MRI (DENSE) sequence for imaging the motion of the carotid artery wall and mapping the 2D circumferential strain in wall. The sequence utilizes a fully-balanced SSFP readout and achieves 0.6 mm in-plane resolution. Preliminary results in volunteers at 1.5 T and 3.0T support the validity of DENSE mapping of pulsatile strain in the carotid artery wall.
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Talyia Veal
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. -
Jianbai Wang
Thu, Jan 11, 2007 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
"An Integrated Position-Sensing System for a MEMS-based Cochlear Implant"Nearly 100,000 people worldwide have received cochlear implants to date, where a bundle of wire electrodes (16-22) is inserted into the cochlea to electrically stimulate receptors in the auditory nerve, restoring hearing to the profoundly deaf. Replacing the traditional wire electrodes with MEMS-based higher-density thin-film arrays may not only allow significantly higher frequency discrimination but can also permit the inclusion of additional features such as position sensing (and eventually control).
A thin-film electrode array integrated with position sensors has been developed for a cochlear prosthesis. The array was fabricated using bulk micromachining technology, and it contains embedded poly-silicon piezoresistive sensors for wall contact and position in order to minimize tissue damage during array insertion and achieve deep implants after insertion. Nine position sensors are distributed at the tip and along the 8mm-long electrode array, and these sensors correspond to approximate gauge factors of 10-20, permitting array tip position to be determined within 50µm and providing wall contact output signals of more than 50mV at the tip. Moreover, parylene-silicon-dielectric electrodes were developed, improving the flexibility and maintaining enough robustness to facilitate the modiolus-hugging shape definition by a polymeric backing device.
The WIMS ERC is developing an implantable MEMS-based cochlear prosthesis using a hybrid electrode array. A custom integrated circuit (ASIC) mounts on the rear of a 32-site thin-film electrode array, interfacing with a hermetically-packaged WIMS microcontroller and wireless chip over an 8-lead polymeric cable. The 2.4mm x 2.4mm ASIC chip operates from 5V and performs command validation, stimulus generation, sensor selection, 5b offset compensation, and signal conditioning (amplification and band-limiting).
Location: Hedco Neurosciences Building (HNB) - 100
Audiences: Everyone Is Invited
Contact: Ericka Lieberknecht
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. -
A Physical Approach to Multiple Antenna Communication
Tue, Jan 16, 2007 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
SPEAKER: Professor Massimo Franceschetti, UC San DiegoAbstract: In multiple antenna (MIMO) systems communication is performed through the act of propagation of electromagnetic (EM) waves. EM research typically focuses on the physical aspects of propagation, while information theory (IT) focuses mainly on the communication aspects, often considering random channel models. In this talk we attempt to address the gap between these two approaches. We formally relate the concept of information transmission to the amount of diversity that EM waves can carry. Such diversity lies in two different dimensions: time and space. The classical view of Shannon's information theory considers only the time dimension along with its transformed counterpart: the frequency spectrum. However, Shannon's theory can also be applied to the space dimension which, analogous to time, becomes a capacity bearing object.The spatial information content can be quantified in a similar fashion than its temporal counterpart, by reducing the inverse problem of field reconstruction to a communication problem in space, and determining the relevant communication modes of the channel by rigorously applying the sampling theorem on the field's vector space.One consequence, for narrow-band frequency transmission, is that space and time can be decoupled, leading to a space-time information duality principle in the computation of the capacity of the radiating system. Interestingly, in the case of wide-band frequency transmission, a much more complex scenario arises, as it turns out that time and space cannot be decoupled and they jointly characterize the wave's information content.Bio: Massimo Franceschetti is assistant professor in the Department of Electrical and Computer Engineering of University of California at San Diego. He received the Laurea degree, magna cum laude, in Computer Engineering from the University of Naples in 1997, and the M.S. and Ph.D. degrees in Electrical Engineering from the California Institute of Technology in 1999, and 2003. Before joining UCSD, he was a post-doctoral scholar at University of California at Berkeley for two years.Prof. Franceschetti was awarded the C.H. Wilts Prize in 2003 for best doctoral thesis in Electrical Engineering at Caltech; the S.A Schelkunoff award in 2005 (jointly with profs. J. Bruck and L. J. Shulman) for best paper in the IEEE Transactions on Antennas and Propagation; and an NSF CAREER award in 2006.He has held visiting positions at at the Vrije Universiteit Amsterdam in the Netherlands, the Ecole Polytechnique Federale de Lausanne in Switzerland, and the University of Trento in Italy.His research interests include random networks for communication, wave propagation in random media, and control over networks. He is currently associate guest co-editor of the IEEE Transactions on Information Theory, special issue on relay and cooperation in networks and the IEEE Journal on Selected Areas in Communications, special issue on Communication and Control.Host: Urbashi Mitra, ubli@usc.edu
Location: Frank R. Seaver Science Center (SSC) - 319
Audiences: Everyone Is Invited
Contact: Mayumi Thrasher
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. -
Multimedia Fingerprinting for Tracing Traitors
Wed, Jan 17, 2007 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Dr. Min Wu
Department of Electrical and Computer Engineering
University of Maryland, College ParkHost: Antonio OrtegaAbstract:
Technology advancement has made multimedia content widely available and easy to process. These benefits also make it easy for unauthorized duplication, manipulation, and redistribution of multimedia content, prompting the need of multimedia forensics research to facilitate evidence gathering in digital world. Digital fingerprinting is one of the emerging forensics technologies to help identify users who have legitimate access to content but may use it for unintended purposes, such as unauthorized redistribution. Unique imperceptible labels, known as digital fingerprints, are inserted in different copies of the same content before giving to each user. For multimedia data, digital fingerprints can be put into the content using conventional robust embedding techniques, which are typically concerned with surviving attacks mounted by an individual. Advances in communication and networking have also made it easy for adversaries to work together. A group of users with differently marked versions of the same content may collaborate to collectively mount attacks against the fingerprints. These so-called collusion attacks provide adversaries with a cost-effective method to remove the fingerprints and circumvent the traitor-tracing mechanism.
In this talk, I will present our recent research on anti-collusion fingerprinting for multimedia data. Through jointly considering the encoding, embedding, and detection of fingerprints, our techniques can help collect digital-domain evidence and pinpoint to the sources of leak among millions of users. Applications of such multimedia forensic tools range from military and government operations to piracy deterrence in Hollywood and other entertainment industry.Biography:
Dr. Min Wu received the B.E. degree in electrical engineering and the B.A. degree in economics in 1996 from Tsinghua University in Beijing, China (both with the highest honors), and the Ph.D. degree in electrical engineering from Princeton University in 2001. Since 2001, she has been on the faculty of Department of Electrical and Computer Engineering and Institute of Advanced Computing Studies at University of Maryland, College Park, where she is currently an Associate Professor. Dr. Wu's research interests include information forensics and security, multimedia signal processing, and multimedia communications. She co-authored two books and holds five U.S. patents on multimedia security and communications. She is a co-recipient of two Best Paper Awards from the IEEE Signal Processing Society and EURASIP, respectively. She also received a U.S. National Science Foundation CAREER award in 2002, a TR100 Young Innovator Award from the MIT Technology Review Magazine in 2004, and a U.S. ONR Young Investigator Award in 2005. [URL: http://www.ece.umd.edu/~minwu/]Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Alma Hernandez
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. -
Heterogeneous Congestion Control
Tue, Jan 23, 2007 @ 11:00 AM - 12:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Abstract:Homogeneity of price is an implicit yet fundamental assumption underlying price based resource allocation theory. In this talk, we study the effects of relaxing this assumption by examining a concrete engineering system (network with heterogeneous congestion control protocols). The behavior of the system turns out to be very different from the homogeneous case and can potentially be much more complicated. A systematic theory is developed that includes all major properties of equilibrium of the system such as existence, uniqueness, optimality, and stability. In addition to analysis, we also present numerical examples, simulations, and experiments to illustrate the theory and verify its predictions.Bio:Dr. Ao Tang's research interests include protocol design for wireless and wireline networks, networked control and dynamical systems, optimization theory, and stochastic processes and networks.
He received his Ph.D. in 2006 from the California Institute of Technology.
He received the INFORMS George B. Datzig Dissertation Award in 2006 for his thesis work titled "Heterogeneous Congestion Control Protocols".
Location: 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. -
Microwave Applications of Metamaterial Structures
Tue, Jan 23, 2007 @ 03:30 PM - 04:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Munushian Lecture Series
Ming Hsieh Department of Electrical EngineeringSEMINAR
"Microwave Applications of Metamaterial Structures"Tatsuo ItohUniversity of California, Los AngelesMetamaterials are artificial or man-made structures that have properties not found in naturally existing materials. The most unusual metamaterials are the Left-Handed ones, also called Double Negative or Negative Refractive Index materials, which are characterized by simultaneously negative permittivity and permeability. Many interesting EM propagation phenomena result from the negativeness of the constitutive parameters. For instance, the phase and the group velocities are anti-parallel in a Left-Handed substance. Fundamental theoretical research as well as research on possible revolutionary applications for microwave and RF circuits is underway at various organizations. Although the technology is still in its infancy, novel practical developments have already been proposed. The talk will contain a brief historical account, fundamental concepts, adaptation to microwave environment and emerging applications for antennas, passive components and active circuits with unique features at microwave frequencies.Tatsuo Itoh received the Ph.D. Degree in Electrical Engineering from the University of Illinois, Urbana in 1969. He worked at University of Illinois, SRI, University of Kentucky, AEG Telefunken in Germany and The University of Texas at Austin. In January 1991, he joined the UCLA as Professor of Electrical Engineering and holder of the TRW Endowed Chair in Microwave and Millimeter Wave Electronics. He has visiting appointment with University of Leeds, UK. Dr. Itoh is a Fellow of the IEEE, served as the Editor of IEEE Transactions on Microwave Theory and Techniques for 1983-1985, was President of the MTT Society in 1990 and was a founding Editor-in-Chief of IEEE Microwave and Guided Wave Letters from 1991 through 1994. He was elected as an Honorary Life Member of MTT Society in 1994. He was the Chairman of Commission D of the URSI for 1993-1996. He received a number of awards including Shida Award from Ministry of Post and Telecommunications, Japan and Japan Microwave Prize, IEEE Third Millennium Medal and IEEE MTT Distinguished Educator Award. He is a member of National Academy of Engineering. He was Distinguished Microwave Lecturer for IEEE MTT Society on Microwave Applications of Metamaterial Structures for 2004 - 06. He has over 1000 publications and generated 66 Ph.D's in the area of microwave and millimeter-waves, computational electromagnetics, antennas, microwave photonics.EBG and Negative Index Materials.
Location: Olin Hall of Engineering (OHE) - 100C
Audiences: Everyone Is Invited
Contact: Ericka Lieberknecht
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. -
Handling Transient Errors in Logic Circuits
Thu, Jan 25, 2007 @ 02:00 PM - 03:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
ELECTRICAL ENGINEERING - DISTINGUISHED LECTURER SERIESAbstract:Transient faults caused by external radiation or internal electrical noise are common in integrated circuits (ICs). They normally do no permanent physical damage, but they can produce complex logical errors that require probabilistic analysis techniques. The shrinking of ICs in accordance with Moore's Law is increasing susceptibility to errors of this type. Moreover, many of the nanotechnologies proposed to replace or supplement conventional ICs also have behavior, both normal and faulty, that is inherently probabilistic. In this talk, I will review transient faults and their impact. I will then discuss a method of modeling transient faults and a computational framework based on probabilistic transfer matrices for analyzing transient faults and errors in logic circuits.Bio: John P. Hayes is Professor of EECS at the University of Michigan, Ann Arbor where he holds the Claude E. Shannon Chair of Engineering Science. His teaching and research interests are in the areas of computer-aided design and testing; VLSI circuits; fault-tolerant systems; ad-hoc networks; and quantum computing. He received the B.E. degree from the National University of Ireland, and his M.S. and Ph.D. from the University of Illinois, all in electrical engineering. Prior to joining the University of Michigan, he was a faculty member at USC. Hayes was the founding director of Michigan’s Advanced Computer Architecture Laboratory (ACAL). He has authored numerous technical papers, several patents, and five books. He received the Michigan’s Distinguished Faculty Achievement Award in 1999 and the Humboldt Foundation’s Research Award in 2004. Hayes is a Fellow of both IEEE and ACM.HOSTS: Prof. Mel Breuer & Prof. Sandeep Gupta
Location: Ethel Percy Andrus Gerontology Center (GER) - ontology Auditorium
Audiences: Everyone Is Invited
Contact: Rosine Sarafian
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. -
Cooperative Networking - Searching For Algorithms in Logarithms
Thu, Jan 25, 2007 @ 04:00 PM - 05:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
SPEAKER: Prof. Mehul Motani, National University of SingaporeABSTRACT: In the last 50 or so years, information theory has helped to characterize many fundamental limits of communications and has driven innovation at the physical layer. Moving up the protocol stack, networking for wireline networks is fairly mature but wireless networks have advanced in a somewhat ad-hoc manner. One of the main challenges is that nodes in wireless networks can interact and cooperate in complex ways, often blurring the line between physical and network layer functions. In this talk, I will describe some of my research work which falls broadly in the area of cooperative networking for wireless ad-hoc and sensor networks. On one hand, we look to network information theory to help us understand the limits of communication and cooperation in networks, e.g., relay, multiple relay, and interference channels. On the other hand, we design algorithms and protocols for cooperative networking, e.g., for multichannel MAC, directional antennas and collaborative signal processing. Combining these two approaches, we describe how information theory in a network setting can suggest efficient approaches to routing for cooperative relaying.BIO: Mehul Motani is currently an Assistant Professor in Electrical and Computer Engineering at the National University of Singapore. He graduated with a PhD from Cornell University, focusing on information theory and coding for CDMA systems. Prior to his PhD, he was a member of technical staff at Lockheed Martin in Syracuse, New York for over four years. Recently he has been working on research problems which sit at the boundary of information theory, communications and networking, including the design of wireless ad-hoc and sensor network systems. He was awarded the Intel Foundation Fellowship for work related to his PhD in 2000 and nominated for the Best Teacher award at NUS. He is on the organizing committees for ISIT 2006 & 2007 and has served on the technical program committees of MobiCom 2007 and many other conferences. He participates actively in IEEE & Sigmobile/ACM and has served as the secretary of the IEEE Information Theory Society Board of Governors.Host: Urbashi Mitra, ubli@usc.edu
Location: Hughes Aircraft Electrical Engineering Center (EEB) - 248
Audiences: Everyone Is Invited
Contact: Mayumi Thrasher
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. -
Applications of Nanotechnology: Imaging, Detection and Nanoelectronics
Fri, Jan 26, 2007 @ 02:30 PM - 03:30 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
Mihri OzkanAssociate Professor at the Department of Electrical Engineering
Center for Nanoscale Science and Engineering
University of California Riverside Importance of engineering at the nanoscale is more appreciated recently to cure diseases such as cancer or to fabricate devices at the scales off bacteria or virus with improved performance. In my talk, I will be giving number of examples from our recent studies specifically about imaging of nanotherapeutics, DNA sensors and bio-templated electronic devices such as resonant tunneling diode and memory. Firstly, label-free detection of nanoparticle therapeutics for in-vitro applications on human breast cancer cells will be demonstrated using a custom built hybrid AFM/NSOM platform. Different types of operational modes revealed the special placement of iron oxide nanoparticles on breast cancer cells after incubation at varying conditions. This study demonstrated label-free imaging of iron oxide particles and their uptake percentage based on their size and time of incubation. Secondly, multi-segmented nanowires in electrical sensor platform will be introduced with successful demonstrations of presence/absence of complementary DNA sequences inside the test buffer. Lastly, nanodevices synthesized using different bio-templates including DNA, PNA and viruses will be introduced. Electrical characterization of hybrid memory and negative differential resistance will be discussed on quantum dot/virus and SWNT/DNA or PNA hybrids, respectively. Short Biography: Dr. Mihri Ozkan is currently an Associate Professor in the Department of Electrical Engineering at UC-Riverside with a research focus in nanotechnology and its applications in biology and engineering. She received her Ph.D. degree in the Department of Electrical and Computer Engineering at UC-San Diego and her M.S. degree in the Department of Materials Science and Engineering at Stanford University. She has over four years of industrial experience including at Applied Materials, Analog Devices and at IBM Almaden Research Center. Dr. Ozkan is the recipient of number of awards including Army's Young Investigator Award (2006), Distinguished Engineering Educator of the Year Award by the National Engineers' Council (2006), Regents Faculty Excellence Award (2006, 2004, 2002), Emerging Scholar Award by the American Association of University Women (2005), Invited participant to the National Academy's Keck Future Initiatives Conference (2005), Visionary Science Award by the BioMEMS and Biomedical Nanotechnology Conference (2003),and "Achievement in Technical Ingenuity" Award by the Inland Empire Economic Partnership (2003). She is an active board member and treasurer in the International Society for BioMEMS and Biomedical Nanotechnology. Her editorial activities include the Journal of Sensors and Actuators B, the Journal of Biomedical Microdevices and the Springer Encyclopedia about BioMEMS and Nanotechnology. She holds more than 25 patent disclosures and about 8 US-patents.Date: Friday, January 26, 2007
Place: HNB 100 (HNB)
Time: 2:30 – 3:30 PM
Location: Hedco Neurosciences Building (HNB) - 100
Audiences: Everyone Is Invited
Contact: Ericka Lieberknecht
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.
