Manoj Srinivasan
Email address : msriniva@princeton.edu

Google scholar listing of publications here.

Ph.D. thesis

Why walk and run: Energetic costs and energetic optimality in simple
mechanics-based models of a bipedal animal.
Manoj Srinivasan, Cornell University, 2006. Abstract and Download

Journal Publications and preprints

1. A. Ruina, J.E.A. Bertram & M. Srinivasan. A collisional model of the energetic cost of support work qualitatively explains leg-sequencing in walking and galloping, pseudo-elastic leg behavior in running and the walk-to-run transition. Journal of Theoretical Biology. Volume 14, pages 170-192, 2005. Here is the preprint.pdf. Official version at JTB's website.

2. M. Srinivasan & A. Ruina. Computer optimization of a minimal biped model discovers walking and running. Nature. September 2005. Vol 439, Pages 72-75, 2006. For videos and a pre-print, please look here. Official version at Nature's website.
See here for newspaper articles and other popular science interest in this work.

3. M. Srinivasan & A. Ruina. Idealized walking and running gaits minimize work. Proceedings of the Royal Society of London, Series A. Vol 463, Pages 2429–2446, 2007. PDF  . Press and publicity .

4. M. Srinivasan & A. Ruina. Rocking and rolling: a can that seems to rock might actually roll. Webpage with video. Physical Review E. In press, 2008.

5. M. Srinivasan & P. Holmes. How well can spring-mass-like telescoping leg models fit multi-pedal sagittal-plane locomotion data? Journal of Theoretical Biology, Volume 255, Pages 1-7, 2008.

6. M. Srinivasan. The structure of energy-minimizing gaits in many simple bipeds: the generality of minimizing work and other universals. In revision, 2008.

7. M. Srinivasan. Chaos in a soda can: non-periodic motions of an upright cylinder with sensitive dependence on initial conditions. Submitted to Mechanics Research Communications, 2008.

8. M. Srinivasan & S. Walcott. State function models of friction: static friction, force-velocity relations, force transients, and stick-slip. Submitted to Physical Review E, 2008.

9. M. Srinivasan. Some bilateral deficits in stength may admit non-neural explanations. Submitted to Journal of Theoretical Biology, 2008.

Conference presentations

1. A simple model predicts some of the coordination of throwing. Manoj Srinivasan, Andy Ruina.
Abstract & Poster (500 kb). World Congress of Biomechanics IV, Calgary, Canada. 2002.

2. Collisional accounting of energy in horse galloping. Manoj Srinivasan, Andy Dressel, John Betram, Andy Ruina.
Abstract & Poster (4 Mb). 27th Annual Meeting of the American Society of Biomechanics, Toledo, Ohio. 2003.

3. Optimization in Biomechanics -- Throwing Mechanics. Manoj Srinivasan.
Abstract & Talk. SIAM Conference on the Life Sciences, Portland, Orgeon. 2004.  Session CP17.

4. Energetics of legged locomotion -- why is total metabolic cost proportional to the cost of stance work? Manoj Srinivasan.
Abstract & Talk. XXth Congress of the International Society of Biomechanics and 29th Annual Meeting of the
American Society of Biomechanics, Cleveland, Ohio. 2005. Session on Locomotion Energetics.

5. On spring-mass models for running animals: Approximate solutions, natural frequencies, stability, and double stance phases.
P. Holmes, M. Srinivasan, K. Rogale, and R. Kukillaya. 2006.  James H. Belfer Memorial Symposium Nonlinear Mechanics, Technion, Israel.

6. Why are passive dynamic robotics efficient? Or at least not wildly inefficient? M. Srinivasan, A. Ruina. World Congress of Biomechanics, Munich, Germany. 2006. (not presented, only in proceedings)

7. Minimal model of a locomoting bipedal animal. M. Srinivasan, A Ruina. World Congress of Biomechanics, Munich, Germany. 2006. 

8. Collision costs in terrestrial gaits. J. E. A. Bertram, A. Ruina, M. Srinivasan. World Congress of Biomechanics, Munich, Germany. 2006. 

9. A particle collision model for calculating the energetic cost of the step-to-step transition in human walking. A. Ruina, M. Srinivasan. World Congress of Biomechanics, Munich, Germany. 2006.

10. The interplay of sensorimotor time-delays and noise in multisensory integration. M. Venkadesan, M. Srinivasan, J. Guckenheimer, F. J. Valero-Cuevas. World Congress of Biomechanics, Munich, Germany. 2006. 

11. Bipedal Running: "No muscle work and all tendon play" is energetically beneficial even with an energy cost for isometric force production. M. Srinivasan. Society for Integrative and Comparative Biology, Phoenix. 2007.