Department Seminars Spring 2006
Usually 12:30 p.m. Tues., EE125 |
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Date & Speaker |
Topic |
| Jan. 17: Dr. Dan Ewert |
JETSON U: The University of the Future |
| Jan. 24: Mark England |
Library Resources for Research |
| Jan. 31: Jim Laschkewitsch |
Echelon Corporation |
| Feb. 7: Dr. Fei Dai |
Topology Control and Mobility Management in Mobile Ad Hoc Networks |
| Feb. 21: Ben Bratten & Yuxin Feng |
QUICNEC: A Review of Theory and Demonstration |
| Feb. 28: Dr. S. Yuvarajan |
Load Sharing in a Hybrid Power System with a PV Panel and a PEM Fuel-Cell |
| March 2 * : Blane Wollschlager |
Systems Engineering |
| March 7 : Dr. Jacob Glower |
Impedance Control |
| March 21 : Dr. Rajesh Kavasseri |
Analysis of Subharmonic Oscillations in a Ferroresonant Circuit |
| March 28: Dr. Roger Green |
Getting a "Handle" on MATLAB Graphics |
| March 30 * : Shiqiang Dai |
Numerical Simulation of Tri-plate Line |
|
Chinese Remainder Codes |
| April 4 * : Dr. Dan Ewert |
How Do You Mend A Broken Heart? |
| April 11: No Seminar: Senior Design Review Day |
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| April 18: Dr. David Farden |
Time Reversal Signal Processing |
| April 25: Dr. Stephen Campbell |
Integrated Circuits and the End of the Roadmap |
| Video Feed Help |
| * Room and/or time different from the usual |
JETSON U: The University of the Future
12:30 p.m. Tuesday, Jan. 17, 2006
in EE 125
by Dr. Dan Ewert
Abstract
Forces, some unseen, are being felt by universities, propelling them into the future global economy. Come hear about one possible scenario resulting from these forces for the future university and how that may affect you as a student, parent of student, faculty, and citizen.
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Library Resources for Research
12:30 p.m. Tuesday, Jan. 24, 2006
in EE 125
by Mark England
Assistant Director for Information Technologies
& Engineering Sciences Librarian
Abstract
The following topics will be covered:
- Approaching a literature search logically -- how to analyze your information need and use this analysis to search strategically and efficiently.
- Resources available at NDSU in Electrical Engineering -- what catalogs, databases, and indexes are available
- Reminders related to efficient library use -- general tips on acquiring resources located in your literature search.
- Getting help with your research from a librarian -- contact information for librarians at NDSU.
Most of the presentation will focus on using the resources.
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Echelon Corporation
12:30 p.m. Tuesday, Jan. 31, 2006
in EE 125
by
Jim Laschkewitsch
Director of Information Technology
Echelon Corporation
Abstract
Echelon Corporation is pioneer and world leader in control networking -- networks that connect machines and other electronic devices -- for the purpose of sensing, monitoring and controlling the world around us. Echelon's LonWorks platform for control networking was released in 1990 and has become a worldwide standard in the building, industrial, transportation, and home automation markets. Launched in 2003, Echelon's Networked Energy Services system is an open, extensible, advanced metering infrastructure that can bring benefits to every aspect of a utility's operation, from metering and customer services to distribution operations and value-added business. In 2005 Echelon released the world's first embedded control network infrastructure, the Pyxos platform, extending the benefits of networking inside machines to the sensors and actuators that make them function.
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Topology Control and Mobility Management in Mobile Ad Hoc Networks
12:30 p.m. Tuesday, Feb. 7, 2006
in EE 125
by Dr. Fei Dai
Abstract
In mobile ad hoc networks (MANETs), it is important to select an appropriate transmission power for each node, called topology control, to reduce energy consumption and signal interference while still maintaining network connectivity. In a topology control protocol, each node selects a few logical neighbors from its 1-hop neighbors based on its local view, constructed by exchanging periodical ``Hello'' messages among neighbors, and uses a small transmission range to cover those logical neighbors. Our recent study showed that the majority of topology control protocols are unable to maintain connectivity in MANETs due to node mobility. One challenging problem involved is to construct consistent local views for the selection of a correct set of logical neighbors. All existing methods that enforce consistent local views require a certain degree of global synchronization.
This talk will first describe several popular topology control schemes and problems caused by node movement. Then we introduce a mobility management mechanism called weak consistency to address this problem. Compared with previous consistency schemes, this new mechanism requires no inter-nodal coordination and incurs no extra overhead. We show that a wide range of localized topology control protocols can be enhanced to ensure correct decisions based on local views that are weakly consistent. It is also proved that two recent ``Hello'' messages from each node are sufficient to construct weakly consistent local views, when each node updates its local views instantaneously, and three recent ``Hello'' messages are enough when each node updates its local view once per ``Hello'' interval.
QUICNEC: A Review of Theory and Demonstration
12:30 p.m. Tuesday, Feb. 21, 2006
in EE 125
by Ben Braaten & Yuxin Feng
Abstract
QUICNEC (Quasi-static Inductive Capacitive Numerical Electromagnetics Code) is a software package developed by ECE researchers to solve practical electromagnetics problems. Development of the code has been sponsored by the Sverdrup Technology, Inc. (Eglin Air Force Base, FL) and the NDSU Center for Nanoscale Science and Engineering (CNSE). An overview will be provided which will include aspects of QUICNEC's history, a review of pertinent theoretical underpinnings, highlights of research obstacles that have been faced and overcome, and a peek at some recent developments. Several example problems will be presented to illustrate QUICNEC's present capabilities.
Load Sharing in a Hybrid Power System with a PV Panel and a PEM Fuel-Cell
12:30 p.m. Tuesday, Feb. 28, 2006
in EE 125
by Dr. S. Yuvarajan
Abstract
The load sharing in a hybrid power system with PV panels and a PEM fuel cell is described. A quick review of the PV panel and PEM fuel cell characteristics will be first given. The details of a hybrid system consisting of a set of PV panels and a Proton Exchange Membrane (PEM) fuel cell will be described. The system draws the maximum power available from the PV panels at any given light level while the fuel cell supplies the balance demanded by the load. The power system maintains a constant output voltage with the help of a PI controller. Simulation and experimental results will be presented.
Systems Engineering
10:00 a.m. Thursday, Mar. 2, 2006
in EE 125
by
Blane Wollschlager
Rockwell Collins
Abstract
Not available
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Impedance Control
12:30 p.m. Tuesday, March 7, 2006
in EE 125
by Dr. Jacob Glower
Abstract
In this presentation, a short history of methods proposed to control the impedance presented by a motor to its environment will be presented. This will be followed by some ideas for 'better' approaches to solve this problem.
Analysis of Subharmonic Oscillations in a Ferroresonant Circuit
12:30 p.m. Tuesday, March 21, 2006
in EE 125
by Dr. Rajesh Kavasseri
Abstract
Ferroresonance is a nonlinear oscillatory phenomenon that occurs in capacitively coupled transformers or reactors under certain conditions. Here, an averaging method is utilized to compute the domain in 2-D parameter space where subharmonic(period -3) ferroresonant oscillations could persist. The accuracy of the analytical results is verified using numerical simulations and the power spectral density. It is shown that the proposed method yields a quick means to determine (i) the proximity to initiation of subharmonic resonance and (ii) the effect of core loss on the domains of subharmonic oscillations.
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Getting a "Handle" on MATLAB Graphics
12:30 p.m. Tuesday, March 28, 2006
in EE 125
by Dr. Roger Green
Abstract
Among engineers and scientists, MATLAB is one of the most popular computational packages. Part of MATLAB's popularity stems from its simple yet sophisticated graphics capabilities. While basic plots are relatively easy to obtain, specialized plots require a little more effort to produce.
This talk will introduce MATLAB's Handle Graphics™, which provide a mechanism to fully control and customize graphics objects in MATLAB. With an understanding of Handle Graphics™, users can produce plots that meet the unique needs and quality standards commonly required by the profession. Several examples, including some from a recently published paper, will be presented to highlight the concepts.
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Numerical Simulation of Tri-plate Line
12:00 p.m. Thursday, March 30, 2006
in EE 207
by
Shiqiang Dai
Abstract
The radiated immunity of an electronic device refers to how well the device will work in the presence of electromagnetic fields. One way of determining this immunity is to place the device between the plates of a tri-plate line (TPL). The objective of this research was to create computer models of the TPL which are then used to simulate the electromagnetic behavior of the TPL.
The software package Expert MININEC Broadcast Professional was used to create computer models for the following scenarios:
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TPL without a separate external ground plane,
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TPL connected to a separate external ground plane, and
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TPL with a small device under test (DUT) inserted between the plates.
Simulation and measurement results are obtained for the voltage standing wave ratio and the electric field between the plates - both with and without a DUT between the plates.
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Chinese Remainder Codes
12:30 p.m. Tuesday, April 4, 2006
in EE 125
by Dr. Rajendra Katti
Abstract
Chinese remainder codes are used in secret sharing, fast arithmetic for signal processing applications and the design of error-correcting codes such as Reed-Solomon codes. In this talk I will introduce such codes. I will then propose some new codes based on the Chinese remainder theorem. Some results on code-distance will also be presented. The new codes proposed have the unusual property of being able to correct more errors than the code-distance allows. Some preliminary results on this capability are presented.
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NDSU 48th Faculty Lectureship
How Do You Mend A Broken Heart?
7:00 p.m. Tuesday, April 4, 2006
in Century Theatre, Memorial Union
by Dr. Dan Ewert
Abstract
This lecture will discuss biomedical engineering dealing with heart function ranging from zero gravity in space to high-gravity military flights. These extreme situations challenge the human cardiovascular system. Information that researchers have learned from these environments has been used to develop new diagnosis and treatment concepts to help cardiac patients. A specific ventricular assist device that can be used to aid those with an ailing heart will be described.
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Time Reversal Signal Processing
12:30 p.m. Tuesday, April 18, 2006
in EE 125
by Dr. David Farden
Abstract
Time reversal signal processing techniques have been applied to undersea communications, lithotripsy (blasting kidney stones), and improving communications in severe multipath wireless networks, amongst other applications. In various communication systems, time-reversal signal processing is a method of obtaining measured data which is then used in various ways to improve system performance. It involves sending a signal over the channel in one direction, receiving and recording the signals at each sensor in a receiving array, then transmitting a time-reversed version of the received signals.
An overview of time-reversal signal processing techniques will be presented, along with projects either in process or contemplated by the ECE Time Reversal Scholar Team and the corresponding Senior Design Teams.
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Integrated Circuits and the End of the Roadmap
12:30 p.m. Tuesday, April 25, 2006
in EE 125
by
Dr. Stephen Campbell
*
Director, Nano Fabrication Center
University of Minnesota
Abstract
For the last forty years the continuous development of the integrated circuit has changed the world. The technology of the IC has revolutionized computing, telecommunications, data storage, entertainment, and a variety of other fields.
The Semiconductor Industry Association has developed a roadmap for technology development. The SIA currently projects three major problems that must be overcome as the end of the roadmap is approached:
- lithography for sub 30 nm features,
- gate insulators for deeply scaled devices, and
- high performance interconnect strategies.
In this talk I will review these three areas and the potential solutions that are currently under investigation. Finally I will review potential approaches to a "beyond the roadmap technology."
* Steve Campbell received his PhD in Physics from Northwestern University. After five years with Unisys Corporation working on integrated circuit research and process integration, he joined the University of Minnesota, where he is currently a Professor of Electrical and Computer Engineering and an Institute of Technology Distinguished Professor. He also directs the NanoFabrication Center and the Nano Coordinating Office.
Professor Campbell is on the executive committee and is the Minnesota lead for the National Nanotechnology Infrastructure Network (NNIN). With nearly 150 publications, he is well known in the area of semiconductor process technology, particularly for his pioneering work on high permittivity gate insulators. More recently Professor Campbell has worked on novel applications of semiconductor nanoparticles.
His text, The Science and Technology of Microelectronic Fabrication, has been used in over 80 US schools as well as schools in Europe and the Pacific Rim. A third edition is now in preparation. The Chinese version of the book recently won the award for the outstanding foreign science and technology book.
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