Ruina A - Search Results

1

Computer optimization of a minimal biped model discovers walking and running.

Srinivasan M, Ruina A. Srinivasan M, et al. Among authors: ruina a. Nature. 2006 Jan 5;439(7072):72-5. doi: 10.1038/nature04113. Epub 2005 Sep 11. Nature. 2006. PMID: 16155564

2

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.

Ruina A, Bertram JE, Srinivasan M. Ruina A, et al. J Theor Biol. 2005 Nov 21;237(2):170-92. doi: 10.1016/j.jtbi.2005.04.004. Epub 2005 Jun 14. J Theor Biol. 2005. PMID: 15961114

3

Rocking and rolling: a can that appears to rock might actually roll.

Srinivasan M, Ruina A. Srinivasan M, et al. Among authors: ruina a. Phys Rev E Stat Nonlin Soft Matter Phys. 2008 Dec;78(6 Pt 2):066609. doi: 10.1103/PhysRevE.78.066609. Epub 2008 Dec 24. Phys Rev E Stat Nonlin Soft Matter Phys. 2008. PMID: 19256970

4

The simplest walking model: stability, complexity, and scaling.

Garcia M, Chatterjee A, Ruina A, Coleman M. Garcia M, et al. Among authors: ruina a. J Biomech Eng. 1998 Apr;120(2):281-8. doi: 10.1115/1.2798313. J Biomech Eng. 1998. PMID: 10412391

5

Walking model with no energy cost.

Gomes M, Ruina A. Gomes M, et al. Among authors: ruina a. Phys Rev E Stat Nonlin Soft Matter Phys. 2011 Mar;83(3 Pt 1):032901. doi: 10.1103/PhysRevE.83.032901. Epub 2011 Mar 8. Phys Rev E Stat Nonlin Soft Matter Phys. 2011. PMID: 21517547

6

Prediction of stable walking for a toy that cannot stand.

Coleman MJ, Garcia M, Mombaur K, Ruina A. Coleman MJ, et al. Among authors: ruina a. Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Aug;64(2 Pt 1):022901. doi: 10.1103/PhysRevE.64.022901. Epub 2001 Jul 20. Phys Rev E Stat Nonlin Soft Matter Phys. 2001. PMID: 11497636

Previous experiments [M. J. Coleman and A. Ruina, Phys. Rev. Lett. 80, 3658 (1998)] showed that a gravity-powered toy with no control and that has no statically stable near-standing configurations can walk stably. We show here that a simple rigid-body …

Previous experiments [M. J. Coleman and A. Ruina, Phys. Rev. Lett. 80, 3658 (1998)] showed that a gravity-powered toy w …

7

A five-link 2D brachiating ape model with life-like zero-energy-cost motions.

Gomes MW, Ruina AL. Gomes MW, et al. Among authors: ruina al. J Theor Biol. 2005 Dec 7;237(3):265-78. doi: 10.1016/j.jtbi.2005.04.014. Epub 2005 Jun 20. J Theor Biol. 2005. PMID: 15970295

8

A point-mass model of gibbon locomotion.

Bertram JE, Ruina A, Cannon CE, Chang YH, Coleman MJ. Bertram JE, et al. Among authors: ruina a. J Exp Biol. 1999 Oct;202(Pt 19):2609-17. doi: 10.1242/jeb.202.19.2609. J Exp Biol. 1999. PMID: 10482720

9

Multiple walking speed-frequency relations are predicted by constrained optimization.

Bertram JE, Ruina A. Bertram JE, et al. Among authors: ruina a. J Theor Biol. 2001 Apr 21;209(4):445-53. doi: 10.1006/jtbi.2001.2279. J Theor Biol. 2001. PMID: 11319893

10

Energetic consequences of walking like an inverted pendulum: step-to-step transitions.

Kuo AD, Donelan JM, Ruina A. Kuo AD, et al. Among authors: ruina a. Exerc Sport Sci Rev. 2005 Apr;33(2):88-97. doi: 10.1097/00003677-200504000-00006. Exerc Sport Sci Rev. 2005. PMID: 15821430 Review.

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