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Events for April 19, 2007
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Exponent On-Campus Interviews
Thu, Apr 19, 2007
Daniel J. Epstein Department of Industrial and Systems Engineering
University Calendar
If you're looking for a challenge, we're looking for you. Exponent's multidisciplinary team investigates important engineering and scientific challenges facing today's top industries. From rapid response to in-depth analysis, our consultants assist clients in solving their toughest technical issues.We're heading your way! Exponent representatives will on the University of Southern California campus for the following events: Information Session – 4/4/07, Time: 6:00 – 7:00 pm, Location: Grace Ford Salvatori Hall (GFS) 106On-Campus Interviews – 4/19/07To sign up, please see the University of Southern California career services center.For more information on career opportunities please visit www.exponent.comEXPONENT - Boston, Bowie, Chicago, Denver, Detroit, Houston, Los Angeles, Maynard, Miami, New York, Oakland, Orange County, Philadelphia, Phoenix, San Diego, Seattle, Silicon Valley, Washington DC, 888-656-EXPO
Audiences: Graduate
Contact: Georgia Lum
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Product Architecture Development as Means to Achieve Corporate Strategy
Thu, Apr 19, 2007 @ 10:00 AM - 11:00 AM
Daniel J. Epstein Department of Industrial and Systems Engineering
University Calendar
Daniel J. Epstein Department of Industrial and Systems Engineering Seminar: "Product Architecture Development as Means to Achieve Corporate Strategy"Dr. Katja Holtta-OttoAssistant Professor of Mechanical Engineering, University of Massachusetts DartmouthABSTRACT: Product architecture related platform and modularity choices affect the product design process, supply chain, manufacturing, etc. Product architecture is the key technical influence on the overall corporate strategy at the executive level. In this talk, I'll make the case that organization architecture, outsourcing, new markets, rapid adoption of new technology, and cost positions are all largely determined by the product architecture, and I will demonstrate the means for R&D to support and enable a corporate strategy. I will review a method I developed that assesses the support a platform provides an executive corporate strategy. This necessarily involves not just one or two evaluation criteria typically used by others, but a comprehensive set. I have formed method that includes criteria from six areas: customer needs, complexity, flexibility, organization, product variety, and after sales. Depending on the executive vision for the company, a platform should assess higher or lower on different subsets of these metrics. Among the assessments, I have found that a key problem is the inability to analyze and verify the product variety demanded of a product strategy. For example, often a strategy will necessitate a modular design, where alternatives and future derivatives are made through incorporation of different sized and performing modules. I have found often it is difficult to ensure the design will work as planned since there are so many product options, sometimes millions, to model and verify. Such systems are impossible to validate through builds and tests. To address this problem I am currently developing requirements-based system-modeling method, to validate unbuilt variants through interpolation among the demonstration built units. The goal is to model system performance virtually, both in the early phases of product development and also in the final design verification phases. THURSDAY, APRIL 19, 2007, GERONTOLOGY BUILDING (GER) ROOM 309, 10:00-11:00 AM
Location: Ethel Percy Andrus Gerontology Center (GER) - 309
Audiences: Everyone Is Invited
Contact: Georgia Lum
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CPT Workshop for International Students
Thu, Apr 19, 2007 @ 12:00 PM - 01:00 PM
Viterbi School of Engineering Career Connections
Workshops & Infosessions
Sponsored by the Office of International Services, this workshop is mandatory for all new applicants for Curricular Practical Training (CPT). *Learn more about CPT
*Obtain an application
*Learn how and when to apply for CPTPre-registration is not required for this workshop. Please do arrive on time.Location: Ronald Tutor Hall of Engineering (RTH) - 211
Audiences: International Students
Contact: RTH 218 Viterbi Career Services
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Geological Sequestration of Carbon Dioxide: A Viable Option for Mitigating the Greenhouse Effect
Thu, Apr 19, 2007 @ 12:45 PM
Mork Family Department of Chemical Engineering and Materials Science
Conferences, Lectures, & Seminars
byProfessor Dongxiao ZhangMewbourne School of Petroleum and Geological EngineeringThe University of OklahomaAbstractA dramatic increase in anthropogenic Greenhouse Gas (GHG) emissions since the
Industrial Revolution is thought to be responsible for current global warming trends.
Carbon dioxide comprises more than half of all atmospheric GHG emissions, resulting
primarily from combustion of fossil fuels. Carbon management is a broad national
and international policy response to address these climate change issues.
Sequestration is the most direct carbon management strategy for long-term removal
of CO2 from the atmosphere, and is likely to be needed for continuation of the US
fossil fuel-based economy and high standard of living. National and international
investments in research on carbon sequestration are ramping up rapidly. At the same
time, carbon sequestration is becoming a new branch of science and engineering.
During this seminar, I will address R&D issues and opportunities associated with
geological carbon sequestration as well as some of our recent research activities in
this area. In particular, a recent pilot study of sequestrating CO2 in a depleted oil
reservoir as well as results for some key issues associated with geological carbon
sequestration (e.g., viscous fingering and wormhole formation) will be discussed in
detail.Thursday, April 19, 2007
Seminar at 12:45 p.m.
OHE 122Refreshments will be served after the seminar in the HED Lobby
The Scientific Community is Cordially Invited.Location: Olin Hall of Engineering (OHE) - 122
Audiences: Everyone Is Invited
Contact: Petra Pearce
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QoS Maps for Mobile Wireless Networks: Coherence Time versus Node Mobility
Thu, Apr 19, 2007 @ 01:00 PM - 02:00 PM
Ming Hsieh Department of Electrical and Computer Engineering
Conferences, Lectures, & Seminars
SPEAKER: Prof. Volkan Rodoplu, Dpt. of Electrical and Computer Engineering, University of California Santa BarbaraABSTRACT: The wireless networks of the next 10 years will consist of a plethora of microprocessor-sensor units embedded in clothes, shoes, cars, buses, as well as the more traditional portable handhelds, and laptops. Today, information flows in wireless networks via a limited number of wireless gateways. In the future, information is expected to flow through thousands to millions of wireless devices themselves. Most of these devices will be mobile and energy-limited, and will have to make decisions on the fly on how to communicate information through thousands to millions of other devices in between to reach destination nodes, as well as gateways into the wired domain. It will no longer be possible to track individual paths and individual nodes; hence, it is essential that an aggregate view of the essential qualities of the mobile network be built and be made available. Quality-of-Service (QoS) decisions regarding energy consumption, delay, and throughput will still play a prominent role in making intelligent decisions to conserve the limited energy supply of devices, and meet delay and throughput requirements in these future networks that consist of thousands to millions of mobile, microprocessor-sensor devices.With this vision, in this talk, we develop new methodologies for mobile, large-scale wireless sensor networks. We propose a novel framework to share, retain and refine end-to-end QoS metrics in the joint memory of the nodes, over time scales over which this information can be spread to the network and utilized for energy planning decisions. In analogy with the point-to-point link concepts, we introduce the "coherence time" of end-to-end QoS metrics for mobile wireless networks. We show that as long as the coherence time of QoS metrics is much larger than the "spreading period", mobile wireless networks can track end-to-end QoS metrics. This is a surprising conclusion given our current understanding of mobile networks, which correlates tractability with the amount of individual node mobility rather than the coherence time of QoS metrics.As an example of this methodology, we construct "energy maps," which are maps of the end-to-end energy metrics in space. We show how to (1) compute the spatial derivatives of energy potentials in mobile networks, (2) construct energy maps on-demand via path integration methods, and (3) distribute, share, fuse, and refine energy maps over time by information exchange during encounters. In order to put the energy maps to use, we present an algorithm for energy optimization, based on the energy maps, that finds the optimal bit allocation strategy to minimize the energy consumption, subject to a delay constraint. We show that significant energy savings are obtained by leveraging network mobility and the energy maps, when compared with a competing algorithm that allocates the traffic at a constant rate without utilizing the energy map. These techniques show how future, large-scale, mobile wireless sensor networks can be handled via new techniques, and how to generalize physical layer concepts such as coherence time, to network-layer concepts related to QoS issues.
This is joint work with Min Kyoung Park (Ph.D. alumna, UCSB)BIO: Volkan Rodoplu received his B.S. degree in Electrical Engineering (summa cum laude) from Princeton University in 1996 and his M.S. degree in Electrical Engineering from Stanford University in 1998. He worked for Texas Instruments (Dallas, TX) in the summer of 1998, on multiuser detection and interference cancellation algorithms, and for Tensilica, Inc. (Santa Clara, CA) in 2000-2001, on turbo decoding algorithms and architectures for reconfigurable processors. He received his Ph.D. in Electrical Engineering from Stanford University in 2003, and subsequently joined the Department of Electrical and ComputerEngineering at UCSB as an Assistant Professor. His research investigates the limits of minimum energy networks as well as the delivery of minimum energy networking solutions. His research areas span underwater networks, terrestrial wireless mobile sensor networks, and applications of cooperative game theory to wireless networks. He is the recipient of the NSF CAREER Award (2007), UC Regents' Junior Faculty Fellowship (2006), Department of Electrical Engineering Outstanding Service Award at Stanford (2000), B.George B. Wood Legacy Prize, and G. David Forney Prize (1996), and the John W. Tukey Award (1995).Host: Bhaskar Krishnamachari, bkrishna@usc.eduLocation: Frank R. Seaver Science Center (SSC) - 319
Audiences: Everyone Is Invited
Contact: Mayumi Thrasher
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CS Colloquium - Rubenstein
Thu, Apr 19, 2007 @ 03:30 PM - 05:00 PM
Thomas Lord Department of Computer Science
Conferences, Lectures, & Seminars
Network Resilience: Improving Survivability, Security, and Robustness of Emerging Network SystemsDan RubensteinAssociate Professor of Electrical Engineering and Computer Science Columbia UniversityAbstract:Computer networks of today and tomorrow need to be deployed rapidly and operate in environments where there is limited cooperation and trust among the nodes composing the network. Examples of such networks include sensor network deployment in a disaster setting, competing 802.11 hotspots, cooperative mesh networks, and delay tolerant networks (DTNs). Such networks are inherently less predictable and more susceptible to accidental or intentional abuses. Our research at Columbia has focused on resilience for this more vulnerable space of networks: how to make them function properly and efficiently when the infrastructure is unplanned, untrusted, insecure, undergoes rapid change, or is attacked.I will begin by describing the various projects in resilience that our lab has focused on over the past several years, and then focus specifically on the problem of control plane monitoring for routing protocols. Distributed routing protocols traditionally assume that all nodes executing the protocol can be trusted to truthfully and correctly report control plane information, but history has demonstrated that sometimes inaccurate information can be propagated with devastating consequences. We develop a theoretical framework that allows us to understand when, using state information provided by a distributed routing protocol, this information can be used to detect erroneous propagation of information. We derive a polynomial-time algorithm for distance vector (Bellman-Ford) and Path-Vector (BGP) style protocols called Strong Detection and prove that if our algorithm cannot detect an error, then the error is undetectable, given the existing state information. We conclude by showing our ongoing work on applicability of Strong Detection to wireless ad-hoc network settings.Biography:Dan Rubenstein is an Associate Professor of Electrical Engineering and Computer Science at Columbia University. He received a B.S. degree in mathematics from M.I.T., an M.A. in math from UCLA, and a PhD in computer science from University of Massachusetts, Amherst. His research interests are in network technologies, applications, and performance analysis, with a substantial emphasis on resilient and secure networking, distributed communication algorithms, and overlay technologies. He has received an NSF CAREER Award, an IBM Faculty Award, the Best Student Paper award from the ACM SIGMETRICS 2000 conference, and a Best Paper award from the IEEE ICNP 2003 Conference.Hosted by Leana GolubchikRefreshments will be served.
Location: Seaver Science Library (SSL) - 150
Audiences: Everyone Is Invited
Contact: Nancy Levien
