This program was developed as a part of a scientific
project of a regional model for sustainable landuse.
There a many indicators for the economic, ecologic and
social state of a area. One of the most important indicators
is the demographic development of a agricultural dominated
area. I needed an illustrative demo for such a development,
not only for agricultural area, also for any area in
a modern country. Modern country means, that the deathrate
is equal for all inhabitants. In such countries there is a
big discussion about the immigration  related to the unemployment
of the population. But how will the German population look like in,
for example, 100 years without any immigation? You can play with the 
model and you'll find it out. You can change the birthrate, the 
immigration, the emigration and see the results. Further you 
have the opportunity to change a set of parameters like
the deathrate, the number of inhabitants, the gender of the
emigrations and so on. Last but not least you have the sources
so you are able to extend the whole program. 
But the program is only a model, not reality. For example
you have to estimate the birthrate, the deathrate and so on. 
Think befor you play with the program.

The program is under terms of GPL. 


                            NO WARRANTY

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.

  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.




Ralf Wieland
email: rwieland@zalf.de



