willij16 [AT] rpi.edu
I am a PhD candidate in Computer Science at Rensselaer Polytechnic Institute, where I work with Prof. Jeff Trinkle in the CS Robotics Lab.
I was a National Science Foundation GK-12 Fellow, and worked with Prof. Ron Eglash and Prof. Mukkai Krishnamoorthy on the Triple Helix project in 2011 - 2012.
In summer 2012, I was a visiting scholar at the Autonomous Intelligent Systems Lab, University Freiburg, where I worked on stochastic characterization and modeling of traction on granular terrain for mobile robots.
Multibody dynamics and simulation
Collision detection and contact determination
Robotic manipulation and grasping
Transit analysis and discovery techniques of extrasolar planets
Effective use of technologies in the classroom
D.M. Flickinger, J. Williams and J.C. Trinkle. Performance of a Method for Formulating Geometrically Exact Complementarity Constraints in Multibody Dynamic Simulation. To appear, Journal of Computational and Nonlinear Dynamics, 2014.
J. Williams, Y. Lu, S. Niebe, M. Andersen, K. Erleben, J.C. Trinkle. RPI-MATLAB-Simulator: A tool for efficient research and practical teaching in multibody dynamics. Workshop on Virtual Reality Interaction and Physical Simulation (VRIPHYS), 2013.
Y. Lu, J. Williams, C. Lacoursiere, and J.C. Trinkle. Standard interface for data analysis of solvers in multibody dynamics.. 4th Canadian Conference on Nonlinear Solid Mechanics (CanCNSM ), 2013.
D.M. Flickinger, J. Williams and J.C. Trinkle. Evaluating the performance of constraint formulations for multibody dynamics simulation. ASME International Design Engineering Technical Conferences and Computers and Information in Engineering Conference (IDETC/CIEC), 2013.
D.M. Flickinger, J. Williams and J.C. Trinkle. What's wrong with collision detection in multibody dynamics simulation? IEEE Conference on Robotics and Automation, 2013.
J. Williams, B. Frank, W. Burgard, J.C. Trinkle. Stochastic characterization of traction on granular terrain. Technical Report 12-06, Department of Computer Science, Rensselaer Polytechnic Institute. December, 2012.
M. Bedell, A. Villaume, L. Weiss, D. Sliski, V. Strelnitski, G. Walker, J. Williams, A. Henden, and T. Krajci. Monitoring Hα emission and continuum of UXORs: RR Tauri. The Astronomical Journal 142 164, 2011.
CONFERENCE PRESENTATIONS, POSTERS, and REPORTS:
J.Williams, Y.Lu, J.C. Trinkle. A complementarity based contact model for accurate treatment of polytopes in simulation. Invited talk at BIRS workshop on Computational Contact Mechanics: Advances and Frontiers in Modeling Contact, February 20, 2014.
Y. Lu, J. Williams, J.C. Trinkle. Standard interface for solver comparison in multibody dynamics. 9th annual New England Manipulation Symposium (NEMS) hosted by Harvard. May, 2013
J. Williams, Y. Lu, J.C. Trinkle. Improving multibody dynamics. RPI Copmuter Science poster session. March, 2013.
D.M. Flickinger, J. Williams, J.C. Trinkle. Evaluating the Performance of Constraint Formulations for Multibody Dynamics Simulation. ASME International Design Engineering Technical Conferences (IDETC), 9th International Conference on Multibody Systems, Nonlinear Dynamics, and Control (MSNDC), Portland, Oregon, 2013.
D.M. Flickinger, J. Williams, J.C. Trinkle. Simulation Accuracy and Computational Performance of a Rotating Slender Rod Impacting a Bed of Rocks. 4th Canadian Conference on Nonlinear Solid Mechanics (CanCNSM), Montreal, Canada, 2013.
D.M. Flickinger, J. Williams, J.C. Trinkle. What's Wrong with Collision Detection in Multibody Dynamics Simulation? IEEE International Conference on Robotics and Automation (ICRA) in Karlsruhe, Germany, 2013.
Stochastic characterization of traction on granular terrain. DARPA Maximum Mobility and Manipulation (M3) annual PI meeting, Philadelphia, PA, July, 2012.
Y. Lu, J. Williams, D.M. Flickinger, J.C. Trinkle. High performance multibody dynamic simulation for robot traction characterization. 8th annual New England Manipulation Symposium (NEMS) hosted by iRobot. May, 2012
A. Villaume, M. Bedell, V. Strelnitski, G. Walker, J. Williams, A. Henden, T. Krajci. Monitoring Hα emission and Continuum in RR Tauri with Narrowband Filters. American Astronomical Society, AAS Meeting #217, #340.27; Bulletin of the American Astronomical Society, Vol. 43, 2011
S. Marshall, J. Williams, T. Mazeh, G. Walker, V. Strelnitski. Using Sys-Rem as an alternative photometry technique. 215th Meeting of the American Astronomical Society (AAS), Washington D.C. January, 2010. A talk was also given in Oct 2009 by Vladimir Strelnitski Ph.D. at B.V. Kukarkin Centenary Conference, Zvenigorod, Russia.
J. Williams, M. Davidson, G. Walker, V. Strelnitski. Improving the precision of differential photometry on a determined target using SysRem. 213th meeting of (AAS) Long Beach, CA. January, 2009.
J. Williams, G. Walker, V. Strelnitski. Observations of exoplanets at Maria Mitchell Observatory. 97th meeting of the American Association of Variable Star observers (AAVSO), Nantucket, MA, October, 2008.