Employment History:

1998-present: Post-doctoral Research - University of Houston.
• Helped develope the technique of simulated annealing to determine the crystal structure of an unknown material.
• Employed Monte Carlo methods and multi-grid techniques.
• Created a visual interface using Java to better understand the experiment.

1994-1998: Research Assistant - University of Houston.
• Extensive modular C programming to analyze non-linear data sets, perform Fast Fourier Transform, Levenberg-Marquardt methods for fitting data.
• Developed many routines which increase speed and acuracy of the results.
• Present papers and research at conferences.

1992-1994: Teaching Assistant - University of Houston.
• Taught and graded weekly lab sections for classes in introductory mechanics and electromagnetism.
• Graded for lecture classes.
• Held a weekly tutoring session.

1989-1991: Lab Technician - Lambda Research, Inc. / Cincinnati, Ohio.

• X-ray diffraction testing for residual stress on industrial parts (gears, camshafts, turbine blades) for companies including GE and Babcock & Wilcox.
• Required X-ray proficiency, electropolishing skills, report writing skills.

Teaching:

1996-1997: Course Intructor for Geometrical Optics - School of Optometry, Univ. of Houston.
• For two semesters, prepared and presented class lectures and examinations to first-year students at the top-ranked School of Optometry at the University of Houston.
• Material covered Geometricaland Wave Optics, including topics such as Snell's Law, thin, spherocylindrical, and thick lenses, aberrations, diffraction, and interference.

5/96 - 5/98: Web Administrator - Physics Department, Univ. of Houston.
• Salaried position requires interaction with other departments and administrators.
• Aided faculty and staff with web pages and security.
• Created and maintained current home page for the Physics Department.
• Installed and maintained operating systems for five department computers.
• Transacted bids for computer systems and components, totalling over $10,000.

Piano tutor for beginning and advanced students, since 1994.
• Earned extra income outside of school work and resposibilities.
• Maximum load at one time equalled eleven students.

Published papers:

• (submitted) Jones, R.E. and G.H. Gunaratne, Characterization of Labyrinthine Patterns and Their Evolution, (1998) J. Stat. Mech.
  
• Gunaratne, G.H., R.E. Jones, Q. Ouyang, and H.L. Swinney, An Invariant Measurement of Disorder, (1995) Phys. Rev. Lett. 75,18, 3281.

• Signal processing using Fast Fourier Transforms.
• Simulated annealing methods and Monte Carlo techniques.
• Non-linear fitting schemes, filtering and interpolation methods.
• Internet programming skills.

• Operating Systems: DOS, Unix, Windows95, WindowsNT4.0 Workstation, Linux.
• Languages: C/C++, Java, perl, HTML, Latex. Self-taught in all except C.
• Have taken apart and reassembled home computer (PC).
• Installed and maintained Windows NT4.0 Workstation.

Outside interests: