function?survival（action）
%
%
%??Simple?MALTAB?ecosystem.?Try?to?find?parameter?values
%??which?will?allow?both?species?to?survive?（with?reproduction
%??rates?higher?than?zero.?Blue?dots?are?preys?and?red?circles?
%??predadtors.?Here?is?the?parameter?info:
%?
%?#Prey?-??????Initial?number?of?preys.
%?
%?Rep.?R?-?????Probability?of?preys?reproducing?each?turn?（between?0-1）.
%?
%?#Pred?-??????Initial?number?of?predators.
%?
%?Star.?R.?-???Starvation?rate?of?predators?（between?0-0.98）.?Predators?die
%?when?they?starvation?level?is?below?0.01.?Starvation?level
%?decreases?at?a?rate?of?（Star.?R.）^k.?Where?k?is?the?number?of
%?turns?the?predator?has?passed?without?eating.?k?resets?to?0
%?as?soon?as?the?predator?eats?a?prey.
%?
%?Speed?-?????How?far?a?predator?can?reach?its?prey?（>0）.
%?
%?Rep.?R-?????Probability?of?predator?reproducing?each?turn?（between?0-1）.?In
%?addition?predator?has?to?have?a?starvation?level?of?at?least
%?0.7?in?order?to?reproduce.
%?
%?
%?W

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1333??2010-04-15?18:40??license.txt
?????文件???????22847??2010-04-15?18:40??survival.m