… In Case Study 5 we show, following Ball and Schaeffer [1983], that this scenario does occur
in equations modeling an elastic body … We shall use these ideas to restrict the form of (dg).· …

… Thus the single equation (36), a bifurcation problem of the type studied in Golubitsky and
Schaeffer (1985), characterizes all 1 : 1 and 2 : 2 responses of our model. Moreover, …

… material with a von Mises yield surface, which Schaeffer (1987) showed were always ill-posed …
PITMAN, EB&SCHAEFFER, DG 1987 Stability of time dependent compressible granular …

Continuum modelling of granular flow has been plagued with the issue of ill-posed dynamic
equations for a long time. Equations for incompressible, two-dimensional flow based on the …

In the present work, a fine, dry powder was sheared in a Couette device: ie, sheared
between concentric vertical cylinders. The torque generated on the rough, inner cylinder was …

We analyze a mathematical model of paced cardiac muscle consisting of a map relating the
duration of an action potential to the preceding diastolic interval as well as the preceding …

… SCHAEFFER independent of z and it turns out that T(vp v,, vm) has the same 2-dependence
as simple products of the components of Vj, Vj, vm. Thus the inner product (1-14) will …

Rho-GTPases are master regulators of polarity establishment and cell morphology. Positive
feedback enables concentration of Rho-GTPases into clusters at the cell cortex, from where …

We present the results of an extensive series of experiments, molecular dynamics simulations,
and models that address horizontal shaking of a layer of granular material. The goal of …

Granular flows occur in a wide range of situations of practical interest to industry, in our
natural environment and in our everyday lives. This paper focuses on granular flow in the so-…