Equations [(1).sub.1,2] define the involved stresses and hyperstresses present in the balance of (physical) linear momentum for a continuum made of a nonlinear, homogeneous elastic material with strain gradients with both nonlinearity and strain gradients relating only to the shear deformation.
So-called high stakes tests--exams they must pass in order to move on to succeeding grades, graduate from high school, or otherwise determine the course of their entire future--are familiarizing our students with a world of anxiety and despair previously the jittery domain of the hyperstressed Japanese student body.