This is an introductory textbook on mathematical ecology bridging the subdisciplines
of population ecology and ecosystem ecology. The expected reader is you: a beginning
graduate student, advanced undergraduate student, or someone who thinks of
themselves as a student all their lives, with a working knowledge of basic calculus
and basic ecology. While this is intended as a stand-alone text, the level is such that
once you have read through it, you will be able to read more advanced texts and
monographs such as Ågren and Bosatta (1998) and Kot (2001) with greater depth.
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
A procedure was designed to assess individual exposure
to NO2 as a marker of outdoor air pollution considering
both spatial and temporal variations on exposure. Ambi-
ent NO2 concentrations for 93 sampling points covering
the study area were obtained using radial symmetry pas-
sive samplers (Radiello®, Fondazione Salvatore Maugeri,
Padua/Italy) which remained exposed for four sampling
periods of 7 days each. The campaigns took place in
April, June, and November 2004 and February 2005.
According to our analysis, which included interviewing over 125 representative
industry leaders in the region, the sector shows strong potential for growth
across all dimensions: talent, which is affecting the creation of quality local
content; content production, leveraging the expanding network of media
free zones; consumption across traditional and new, digital platforms; and
monetisation, through better targeting of audiences and new revenue streams.
The industry is also expected to take advantage of the high proportion of young
people in the Arab population.