We consider the dynamics of a simple one dimensional model and we discuss the phenomenon of aging (i.e., the strong dependence of the dynamical correlation functions over the waiting time). Our model is the so-called random random walk, the toy model of a directed polymer evolving in a random medium. ROMA LA SAPIENZA 962-93, cond-mat/9308003

In [1] we presented the language T OY(FD) that integrates the best features of existing functional and logic languages, as well as finite domain (FD) constraint solving. We believe that T OY(FD) is more flexible and expressive than the existing approaches of constraint logic programming on finite domain (CLP (FD) ) as it integrates FD constraint solving, lazy evaluation, higher order applicatio...

Abstract We examine the theory of the Hurricane Balls toy. This toy consists of two steel balls, welded into a rigid structure which is sent spinning on a horizontal surface somewhat like a top. Unlike a top, at high frequency the symmetry axis approaches a limiting inclination that is not perpendicular to the surface. We calculate and experimentally verify the limiting inclinations for three t...

This paper describes a proposal to incorporate nite domain constraints in a functional logic system. The proposal integrates functions, higher-order patterns, partial applications, non-determinism, logical variables, currying, types, lazyness, domain variables, constraints and nite domain propagators. The paper also presents TOY(FD), an extension of the functional logic language TOY that provid...