NTNUJAVA Virtual Physics Laboratory
Enjoy the fun of physics with simulations!
Backup site http://enjoy.phy.ntnu.edu.tw/ntnujava/
July 23, 2019, 12:14:21 pm *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
 
   Home   Help Search Login Register  
A man paints with his brains and not with his hands. ..."Michelangelo (1475-1564, Italian sculptor, painter, architect and poet)"
Google Bookmarks Yahoo My Web MSN Live Netscape Del.icio.us FURL Stumble Upon Delirious Ask FaceBook

Pages: [1]   Go Down
  Print  
Author Topic: Predators and preys simulation  (Read 3977 times)
0 Members and 1 Guest are viewing this topic. Click to toggle author information(expand message area).
Fu-Kwun Hwang
Administrator
Hero Member
*****
Offline Offline

Posts: 3082



WWW
«
Embed this message
on: June 13, 2010, 11:01:14 am » posted from:Taipei,T\'ai-pei,Taiwan

Predators  and preys 
The historical introduction to the problem of predator and preys can be found in the other example with a similar name (which you should see first). In that example, the classical approach of Lotka and Volterra was introduced.
In this simulation, we will try to really simulate how predators and preys coexist in a reduced piece of land. We need to describe how preys reproduce and feed predators (so to say), and how predators reproduce accordingly. To make it a bit more realistic, both, predators and pres move in each evolution step, and it is only if they meet that a predator can find its lunch!
The goal is to be able to produce a setting in which both species coexist with their respective population showing a (more or less) stable alternating behaviour.

There are plenty of activities that can be done here. Although you are presented with three slighty different solutions for this problem which give reasonable results, perhaps the most interesting activity is to clear the corresponding evolution pages and ask your students to provide their own specification for what the mutual interaction of these two species should be. This can be presented to your students as a kind of team competition game. The team which produces a more stable final solution wins!
 
1. Even if you give them the solution included in the example, you can ask them to find appropriate values for the parameters. It took me a lot of time to get to find the ones I include here. If you look closer at them, they look more parameters for an infection than parameters for tigers and rabbits. There is a reason for this. Simple models (like Lotka-Volterra) are suitable for simple situations only.
2. Try to improve the haunting scheme (make it more intelligent, let predators smell food from longer distances,...) and see if you can improve the result.
3. Implement a reservoir of preys, where predators can not get in and see if you can improve the result. 

Embed a running copy of this simulation

Embed a running copy link(show simulation in a popuped window)
Full screen applet or Problem viewing java?Add http://www.phy.ntnu.edu.tw/ to exception site list
Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop. This work is licensed under a Creative Commons Attribution 2.5 Taiwan License
  • Please feel free to post your ideas about how to use the simulation for better teaching and learning.
  • Post questions to be asked to help students to think, to explore.
  • Upload worksheets as attached files to share with more users.
Let's work together. We can help more users understand physics conceptually and enjoy the fun of learning physics!


* PredatorAndPreySimulation.gif (16.45 KB, 658x362 - viewed 382 times.)
Logged
Pages: [1]   Go Up
  Print  
A man paints with his brains and not with his hands. ..."Michelangelo (1475-1564, Italian sculptor, painter, architect and poet)"
 
Jump to:  


Related Topics
Subject Started by Replies Views Last post
Request for new simulation
Request for physics Simulations
aveek 1 8376 Last post January 21, 2009, 01:59:01 pm
by Fu-Kwun Hwang
How i can to design my simulation ?
Question related to Physics or physics related simulation
mkcit 12 16506 Last post June 10, 2016, 11:10:16 pm
by Floyd
Powered by MySQL Powered by PHP Powered by SMF 1.1.13 | SMF © 2006-2011, Simple Machines LLC Valid XHTML 1.0! Valid CSS!
Page created in 0.048 seconds with 23 queries.since 2011/06/15