We study a simple continuous-time multi-agent system related to Krause’s model ofopinion dynamics: each agent holds a real value, and this value is continuously attracted by everyother value differing from it by less than 1, with an intensity proportional to the difference.We prove convergence to a set of clusters, with the agents in each cluster sharing a commonvalue, and provi...

Introduction: Experimental wear testing is well-established as an important part of the TKR design process. Recently, in-silico models have proved their value to corroborate long-term in-vitro results on a much shorter timescale [1]. Both FE-based models & multi-body dynamics can be used to predict contact pressures, sliding distances and cross-shear (CS). The precise mechanisms of wear are not...

This work is part of a larger research effort investigating the role of symmetries in control of large-scale cyberphysical-systems (CPS). Most prior efforts have considered discrete symmetries, and the work in this paper reflects our initial efforts directed toward investigating continuous symmetries. Specifically, we consider a formation control problem, limited for now to only two agents, and...

We describe the implementation details of a real-time surgical simulation system with soft-tissue modeling and multi-user, multi-instrument, networked haptics. The simulator is cross-platform and runs on various Unix and Windows platforms. It is written in C++ with OpenGL for graphics; GLUT, GLUI, and MUI for user interface; and supports parallel processing. It allows for the relatively easy in...

Molecular dynamics simulation is performed on the buckling behavior of single and multi-walled carbon nanotubes under axial compression. Brenner’s ‘second generation’ empirical potential is used to describe the many-body short range interatomic interactions for singlewalled carbon nanotubes, while the Lennard Jones 12-6 model for van der Waals potential is added for multi-walled carbon nanotube...

Gait modification strategies play an important role in the overall success of total knee arthroplasty. There are a number of studies based on multi-body dynamic (MBD) analysis that have minimized knee adduction moment to offload knee joint. Reducing the knee adduction moment, without consideration of the actual contact pressure, has its own limitations. Moreover, MBD-based framework that mainly...