41.   We consider the problem of finding the best (uniform) approximation of a given continuous function by spline functions with free knots.

42.   We consider a mathematical model (the so-called traveling-wave system) which describes longitudinal dynamical effects in semiconductor lasers.

43.   We consider the dynamics of N boson systems interacting through a pair potential N ??

44.   We consider a 1-particle 3-dimensional Schr?dinger operator with Coulomb potential perturbed by a compactly supported functionq(x)(x¡ÊR 3) and by an external electric field.

45.   We consider a shock-type wave solution of the modified quintic complex Ginzburg-Landau equation and make a numerical study of its spatiotemporal stability.

46.   We consider graphs and digraphs obtained by randomly generating a prescribed number of arcs incident at each vertex.

47.   When investigating the risks corresponding to different sport activities, we must consider incidence, possible causes and different kinds of sport injuries too.

48.   We consider a game where players face environmental constraints.

49.   In this paper we consider portfolio selection problem with interval and fuzzy objective function coefficients as a kind of multiple objective problems including uncertainties.

50.   We consider a (nonlinear) autoregressive model with unknown parameters (vector ¦È).