Nicholas B. Tufillaro's Oregon State University Web Page
     Department of Biological and Ecological Engineering

Email:
       nbt.osu@gmail.com

For more details please see my main web site at:

      
http://www.drchaos.net

Link to Resume: Academic
Link to Publications: List by year, List by subject
Link to Talks: List of Talks

Walla Walla River Flood 1996

Professional Biography: Nicholas Tufillaro

My most recent professional interest is the development of instrumentation, remote sensing, and related computational models for the complex nonlinear processes associated with hydrologic science: specifically water quality and water flows both at the surface and subsurface. I am currently working with a number of researchers at Oregon State University in the Department of Biological and Ecological Engineering (BEE) and the College of Oceanic and Atmospheric Sciences (COAS).

Other past and current research has covered a broad area of industrial, applied, experimental, and theoretical physics. A main theme in my work is the analysis and modeling of nonlinear behavior with a strong inclination toward the methods of computational science (Nonlinear Dynamics Resource Letter I, AJP, September 1997). During much of the last ten years I have worked as an industrial research and development scientist doing modeling of new RF, microwave, and optical devices and measurement instrumentation, as well as laying the foundations for a general test and measurement methodology for the characterization and design of systems exhibiting nonlinear behavior (IEEE Trans. Circuits and Systems I 48 (9), 2001, IEEE Trans. on Microwave Theory and Techniques 52 (9),  2004). Most of the engineering applications of this work are geared toward the high-speed wireless and optical communications industries. Prior to my work in industy, I did  experimental work on spatial temporal chaos in surface waves (PRL 62 (4), 422 (1989)), theoretical work in the topological characterization of low dimensional chaos (PRL 64 (20), 2350 (1990), PRE 51 (1), 164-174 (1995).), and also developed the first industrial photoluminescence system used in the large scale production of semi-conductor lasers. This work, done early in my career while I was at  Bell Labs, helped in a small part to enable TAT-8, the first transatlantic fiber optic cable. I have also worked as a consultant for Dow Chemical, the Ford Motor Company, and the Hewlett-Packard Company, on issues of nonlinear system identification, modeling, and analysis. Lastly, I try to do my part for free software. I am one of the the two principal developers of the GNU plotutils package.

I am qualified to lecture in undergraduate and graduate physics, and  many courses in undergraduate mathematics, electrical engineering and a few topics in computer science and software  engineering. Some standard courses I particularly like to teach are undergraduate quantum mechanics, undergraduate and graduate classical mechanics, ordinary differential equations, introductory and advanced mathematical methods for physicists and engineers, computational physics, and supervised undergraduate and graduate research.  Specialty courses I have already developed or would like to develop include Nonlinear Dynamics, Computational Physics, Inverse Problems in Applied Physics, and a course on the modulation techniques and devices used in modern (spread spectrum and optical) communications systems. I have had great experiences involving undergraduates in research including directing about eight undergraduate research projects (Tina Mello, Ivan Lalovic) and  several summer interns (Pete Wyckoff), almost all leading to publications mostly in the American Journal of Physics. In addition I've advised Ph.D students (Tim Molteno, while at the University of Otago), and three postdoctoral scientists (David Walker, Paul Gross and Brian Spears).

Courses I have previously taught include: Introductory Physics (Giancoli), Quantum Physics (Griffiths,  Liboff), Mathematical Methods (Jordan and Smith), Modern Experiments in Physics (Sophomore Lab), and Nonlinear Dynamics (Tufillaro, Abbott, and Reilly).

Sampling of Recent Work:

  stream article cover

DTS Articles:
Nick Tufillaro, John Dorighi, Mike Collier and John Selker,
Measuring stream dynamics with fiber optics,
AMJ, Issue 3, September 2007.
File Name: hyd_1.pdf

John Selker, Julie Gabrielli, Chris Gregory, Chadi Saydec, Nick Tufillaro, et. al.,
Taking the Temperature of Ecological Systems with Fiber Optics,
EOS Trans. AGU, 89 (20) 187, 13 May 2008.
File Name: hyd_2.pdf, hyd_2eos.pdf

Related thesis of Interest:

Mike Collier, Demonstration of fiber optic distributed temperature sensing to differentiate cold water refuge between ground water inflows and hyporheic exchange, OSU 2008.

Bedform Articles
N. B. Tufillaro,
Discrete dynamical models showing pattern formation in subaqueous bedforms,
International Journal of Bifurcations and Chaos
3 (3), 779-784 (1993).
File Name: ca_3.pdf

Related thesis of interest:
Douglas J. Jerolmack, Modeling the dynamics and depositional patterns of sandy rivers, MIT 2006.
Andersen Thesis

Talks:
Physics of DTS, OSU Internal Workshop, Spring 2009 (.pdf)
DTS Workshop 2008 Matlab Tutorial (.pdf), DTS Workshop 2008 Matlab dts_tools.zip (65 Mb)
DTS Workshop 2008 Instrument Calibration (.ppt), More details on calibration computations (.doc).

Data Sets:
Willamette DTS Example Files   H. J. Andrews Airshed DTS Data   Walla Walla DTS Scripts

Selker Group Meeting Presentations:
Codes for distributed temperature sensing (DTS) (.ppt),
DTS Heat pulse, RC analogy (.ppt), 
DTS heat pulse line charge nonlinear fit (.pdf) Matlab_fitting_codes (.zip)
DTS heat pulse thermal cylinder model (.pdf)
Sediment_Transport_Introduction (.ppt), incepient_motion.avi

Proposals:
A scalable network of image sensors for watershed gauging and monitoring (.pdf)(Draft 2005, not submitted). related files (.rar
)
Nonlinear modeling and synthesis of birdsongs (.doc) (Draft 2002, not submitted).


DTS Workshop, H.J. Andrews 2007
hj andrews dts workshop 2007


Media Presentations of Interest:

John Selker Video from OPB Oregon Field Guide on Fiber Optic Temperature Sensing (2009) (.mp4) video2 (.mp4) video3 (.mp4)
Gordon Grant Audio from NPR Radio Expeditions (2005) (.mp3)

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