• Publications
  • Influence
Spectral methods for modelling guided waves in elastic media
An efficient, accurate, and flexible numerical scheme based on spectral methods is developed here to determine dispersion curves and displacement/stress profiles for modes in elastic guidingExpand
  • 55
  • 6
Trapped modes in curved elastic plates
We investigate the existence of trapped modes in elastic plates of constant thickness, which possess bends of arbitrary curvature and flatten out at infinity; such trapped modes consist of finiteExpand
  • 48
  • 3
An Empirical Test of the Ergodic Hypothesis: Wealth Distributions in the United States
Studies of wealth inequality often assume that an observed wealth distribution reflects a system in equilibrium. This constraint is rarely tested empirically. We introduce a simple model that allowsExpand
  • 14
  • 3
Far from Equilibrium: Wealth Reallocation in the United States
Studies of wealth inequality often assume that an observed wealth distribution reflects a system in equilibrium. This constraint is rarely tested empirically. We introduce a simple model that allowsExpand
  • 8
  • 2
  • PDF
Acoustic quasi-modes in slowly varying cylindrical tubes
Guided wave propagation in slowly varying elastic bars is of increasing importance in the non-destructive evaluation of structures. This paper develops an asymptotic theory for the simpler case of anExpand
  • 9
  • 1
Trapped edge waves in stratified rotating fluids : numerical and asymptotic results
The existence of trapped edge waves in a rotating stratified fluid with non-constant topography is studied using asymptotic and numerical techniques. A refinement of the classical WKBJ method isExpand
  • 5
  • 1
  • PDF
Edge waves in a rotating stratified fluid
  • 1
  • 1
Electronic eigenstates in quantum rings: Asymptotics and numerics
The electronic eigenstates of quantum rings of constant width and arbitrary shapes are studied in the two-dimensional infinite hard-wall potential approximation. An asymptotic method is developed toExpand
  • 35
Trapped modes in bent elastic rods
Abstract We investigate the existence of trapped modes in elastic rods of constant circular cross-section that possess bends of arbitrary curvature and straighten out at infinity; such trapped modesExpand
  • 22
The evolutionary advantage of cooperation
Cooperation is a persistent behavioral pattern of entities pooling and sharing resources. Its ubiquity in nature poses a conundrum. Whenever two entities cooperate, one must willingly relinquishExpand
  • 9
  • PDF