These lectures intend to give a self-contained exposure of some techniques for
computing the evolution of plane curves. The motions of interest are the so-called
motions by curvature. They mean that, at any instant, each point of the curve moves
with a normal velocity equal to a function of the curvature at this point. This kind of
evolution is of some interest in differential geometry, for instance in the problem of
This report covers in considerable detail the legal as well as institutional struc-
tures of the Serbian bond market, and compares these to the evolution of the recent-
ly developed bond markets in the Czech Republic, Hungary, Poland, and Slovakia.
The core of the study is a technical section on the estimation of the bond yield curve
in Serbia using the Nelson-Siegel Model, followed by an illustration of how parame-
ter estimates can be utilized to forecast the term structure. This analysis was con-
strained by limited data availability on the over-the-counter market.
This chapter includes contents: Population dynamic: S/J curve, introduced species (example: Rabbits and American Chestnut), predator- prey and host-parasite dynamics, population equilibrium, evolution, succession, living beyond our means.