1. Biological Modeling (3 basic types) Physical ( reduce size of actual phenomena) Concept ( minds map or flowchart) Mathematical ( Computer : Spread sheet, FORTRAN basic )

2. A computer Simulation A computer simulation (or "sim") is an attempt to model a real-life or hypothetical situation on a computer so that it can be studied to see how the system works. By changing variables, predictions may be made about the behavior of the systempredictions

3. Modeling tools A computer simulation, a computer model or a computational model is a computer program, or network of computers, that attempts to simulate an abstract model of a particular system.computer programsimulatemodel Computer simulations have become a useful part of mathematical modeling of many natural systems.mathematical modeling in physics (computational physics), chemistry and biology,physicscomputational physicschemistrybiology human systems in economics, psychology, and social science andeconomicspsychologysocial science in the process of engineering new technology, to gain insight into the operation of those systems, or to observe their behaviorengineeringtechnology

4. MODELLING Simulation is the imitation of some real thing, state of affairs, or process. The act of simulating something generally entails representing certain key characteristics or behaviors of a selected physical or abstract system

5. CROP modeling Use to predict crop growth using some known input Rice model as in Lab 4 Other more sophisticated models with more input data and greater precision in prediction are found for most majors crops of the world. Oryza( Rice), Ceres ( maize)

6. Steps in Biosystems Modeling State specific problem Identify the specific purpose Define system componnents Define all parameters and variables Propose a topological structure Describe mathematically Develop equations Test the model it usefulness Validate Modify if necessary