Department Seminars Fall 2008
Usually 12:30 p.m. Tues., EE125 |
Date & Speaker |
Topic |
| Sept. 9: Bonnie Cooper |
Workshop about Dissertations |
 |
| Sept. 23: Dr. Lingling Fan |
Control of Wind Generator for Oscillations |
| Oct. 7: Dr. Chao You |
Parallel Computing |
| * Room and/or time different from the usual |
An Analysis of the Role of Water on the Effective Permittivity of Biological Materials Using Mixing Formulas
2:00 p.m. Friday, June 6, 2008
in EE 125
by
Anupama Sadasiva
,
NDSU
Fargo. ND
Abstract
The literature on the permittivity of biological materials shows discrepancies in the values reported by various sources. The effective permittivity of biological materials is dependent on its constituent materials. In this study, mixing formulas are reviewed and used to investigate the role of water content and state on the effective permittivity of biological materials. White matter, gray matter, muscle, skin and liver are used as examples of biological materials and their permittivity values are determined using the Maxwell-Garnet mixing formula for variations in water levels over a physiological range. The results show that the discrepancies found in literature can, to a great extent, be accounted for by the variations in water volume levels. Further, correcting for the presence of bound water, a wider range of permittivity values is achieved due to the low permittivity of bound water. All such changes are also shown to be maintained over a wide frequency range.
This study provides deeper insight into the effect of water content and state on biological materials. Researchers can benefit from this work by accounting for water content and state when modeling biological materials and assessing the effects of electromagnetic fields.
Top
Workshop About Dissertations
12:30 p.m. Tuesday, Sept. 9, 2008
by Bonnie Cooper
Graduate School
NDSU
Fargo
Abstract
This is a workshop about dissertations, theses, and papers. The workshop will cover
1. information that students can obtain on the NDSU Graduate School website;
2. IRB, IBC, and IACUC approval;
3. guidelines for the preparation of dissertations, theses, and papers;
4. timelines; and
5. disquisition tips.
There will be ample time for attendees to ask questions that they may have.
Brief Bio
Bonnie Cooper serves as the Writing Specialist for The Graduate School. She is from Groton, SD. She received her B.S. and M.A. from NDSU; both degrees are in Speech Communication. She has worked in a variety of editorial capacities, one of which was proofreading articles for a communication journal. Several years ago, she served as Interim Director of NDSU's Center for Writers, allowing her to work with students, faculty, and staff as they worked to become better writers. She advises an honor society at NDSU and is currently serving on the society's International Leadership Council as its secretary. Her spare time is spent with family and singing in her church choir.
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Control of Wind Generator for Oscillations
12:30 p.m. Tuesday, Sept. 23, 2008
in EE 123
by Dr. Lingling Fan
ECE Dept.
NDSU
Fargo
Abstract
Oscillations, especially inter-area oscillations are one of the challenges in power system long distance transmission. Inter-area oscillations limit the line capacity to a value much lower than the thermal capacity. With more and more states requiring renewable energy portfolio standards, large-scale wind power is expected to integrate into the grid. In Minnesota, 25% of the energy is expected to be from renewable energy by 2020. Wind power is the major component of the renewable energy portfolio in Midwest region due to the abundant wind resources. Wind farms are usually located at remote areas from the loads (metropolitan areas). Thus long distance transmission is required for wind power to be delivered to the loads. This situation increases the demand of long distance transmission and inter-area oscillations become an evident challenge in the future power system with large-scale wind power.
In this talk, the impact of wind generation on inter-area oscillation will be analyzed and the principle of oscillation control design will be explored. The alternative options along with future research plans are laid out.
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Parallel and Distributed Simulation and Its Applications
12:30 p.m. Tuesday, Oct. 7, 2008
in EE 123
by Dr. Yan Gu
Department of Computer Science
NDSU
Fargo
Abstract
Enormous amounts of memory and computation power are required for simulation of large, complex systems such as telecommunication networks. Multiprocessor computer systems have motivated an extensive amount of research in the execution of discrete event simulation programs on high performance computing facilities.
In this talk, I will first give introductions to the concepts of parallel discrete event simulation and discuss related research problems. Then I will introduce my research work on utilizing parallel discrete event simulation for remote network emulation. Finally I would like to discuss potential research opportunities of large scale simulation in other areas. Top
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Welcome