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- John Tweed
- Professor
- Department of Mathematics & Statistics
- 2309 Engr and Comp Sci Bldg
-
Norfolk,
VA
23529
- 757-683-3909
- jtweed@odu.edu
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Education
- University of Glasgow,
1981
- Major: Applied Mathematics
- Degree: D.Sc.
- University Of Glasgow,
1968
- Major: Applied Mathematics
- Degree: Ph. D.
- Strathclyde University,
1965
- Major: Applied Mathematics
- Degree: M.Sc.
- Royal College of Sci. & Tech.,
1964
- Major: Applied Mathematics
- Degree: ARCST
- Royal College of Sci. & Tech.,
1964
- Major: Applied Mathematics
- Degree: ARCST
-
Research Interests
- Integral transforms, Integral Equations, Elasticity, Acoustics, Radiation Transport
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Articles
- Mertens, C. J., Moyers, M. F., Walker, S. A., and Tweed, J. J. Proton Lateral Broadening Distribution Comparisons between GRNTRN, MCNPX and Laboratory Beam Measurements. Advances in Space Research
- Mertens, C. J., Walker, S. A., Wilson, J. W., Singleterry, R. C., and Tweed, J. J. (2007). Coupling of Multiple Coulomb Scattering and Energy Loss and Straggling in HZETRN. Advances in Space Research, 40, (pp. 1357-1367).
- Gerhold, C. H., Clark, L. R., Dunn, M. H., and Tweed, J. J. (2006). Investigation of Acoustical Shielding by a Wedge-Shaped Airframe. Journal of Sound and Vibration, 294 (1-2), (pp. 49-63).
- Wilson, J. W., Tweed, J. J., Walker, S. A., Cucinotta, F. A., Tripathi, R. K., Blattnig, S., and Mertins, C. J. (2005). A Procedure for Benchmarking for Laboratory Exposures with 1 A GeV Iron Ions. Advances in Space Research, 35 (2), (pp. 185-193).
- Tweed, J. J., Walker, S. A., Wilson, J. W., Cucinotta, F. A., Tripathi, R. K., Blattnig, S., and Mertens, C. J. (2005). Computational Methods for the HZETRN Code. Advances in Space Research, 35 (2), (pp. 194-201).
- Walker, S. A., Tweed, J. J., Wilson, J. W., Cucinotta, F. A., Tripathi, R. K., Blattnig, S., Zeitlin, C., Heilbronn, L., and Miller, J. (2005). Validation of the HZETRN Code for Laboratory Exposures with a 1 A GeV Iron Ions in Several Targets. Advances in Space Research, 35 (2), (pp. 202-207).
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Presentations
- Comparisons between HZETRN simulations and beam measurements of proton lateral broadening distributions
- Conference Name:
- Location: Montreal, Canada
- Date: July 13, 2008
- Authors/Presenters:
Mertens, C. J.
Moyers, M. F.
Walker, S. A.
Tweed, J. J.
- Validation of a Multi-Layer Green's Function Code for Ion Beam Transport
- Conference Name:
- Location: Montreal, Canada
- Date: June 13, 2008
- Authors/Presenters:
Walker, S. A.
Tweed, J. J.
Wilson, J. W.
Tripathi, R. K.
Badavi, F. F.
Miller, J.
Zeitlin, C.
Heilbronn, L. H.
- Recent Progress in the Development of a Multi-Layer Green's Function Code for Ion Beam Transport
- Conference Name:
- Location: Albuquerque, NM
- Date: February 10, 2008
- Authors/Presenters:
Tweed, J. J.
Walker, S. A.
Wilson, J. W.
Tripathi, R. K.
- A Multi-Layer Green's Function for Ion Beam Transport
- Conference Name:
- Location: Albuquerque, NM
- Date: September 18, 2007
- Authors/Presenters:
Tweed, J. J.
Walker, S. A.
Wilson, J. W.
Tripathi, R. K.
- Validation Studies of the GRNTRN Code for Radiation Transport
- Conference Name:
- Location: Chicago, IL
- Date: July 9, 2007
- Authors/Presenters:
Tweed, J. J.
Walker, S. A.
Wilson, J. W.
Tripathi, R. K.
Badavi, F. F.
Miller, J.
Zeitlin, C.
Heilbronn, L. H.
- A Radiation Transport Code for Space and Laboratory Applications
- Conference Name:
- Location: San Jose, CA
- Date: September 19, 2006
- Authors/Presenters:
Tweed, J. J.
Walker, S. A.
Wilson, J. W.
Tripathi, R. K.
Badavi, F. F.
Cucinotta, F. A.
- An Improved Green's Function Code for HZE Ion Transport
- Conference Name:
- Location: Norfolk, VA
- Date: July 17, 2006
- Authors/Presenters:
Tweed, J. J.
Walker, S. A.
Wilson, J. W.
Tripathi, R. K.
Cucinotta, F. A.
Badavi, F. F.
- Steps Towards Developing a Multi-layer Green's Function Code for Ion Beam Transport
- Conference Name:
- Location: Norfolk, VA
- Date: July 17, 2006
- Authors/Presenters:
Walker, S. A.
Tweed, J. J.
Wilson, J. W.
Tripathi, R. K.
Cucinotta, F. A.
- Coupling of multiple coulomb scattering and energy loss and straggling in HZETRN
- Conference Name:
- Location: Beijing, China
- Date: July 16, 2006
- Authors/Presenters:
Mertens, C. J.
Walker, S. A.
Wilson, J. W.
Singleterry, R. C.
Tweed, J. J.
- NASA radiation protection research for exploration missions
- Conference Name:
- Location: Beijing, China
- Date: July 16, 2006
- Authors/Presenters:
Wilson, J. W.
Cucinotta, F. A.
Tripathi, R. K.
Heinbockel, J. H.
Tweed, J. J.
Mertens, C. J.
Blattnig, S.
Zeitlin, C.
- 2004: NASA Certificate of Appreciation for Exceptional Contributions to the International Space Station Radiation Shielding Team, NASA
- 1981: Jack Prize, University of Glasgow
- 1964: Brown Prize, Royal College of Sciences and Technology
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Contracts, Grants and Sponsored Research