petri_dish
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| author | Yashina Ksenia <ksenia_yashina@kodomo.fbb.msu.ru> |
|---|---|
| date | Thu, 23 Dec 2010 17:08:18 +0300 |
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| children |
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5 <body>
7 Simulation of life inside Petri dish, where hypothetic unicellular organisms move and reproduce.
8 <br><br>
10 <ul>
11 <li>Cell - a unit of population, described by location in the dish, velocity and lifespan; can carry and transmit mutation </li>
13 <li>Asexual reproduction - division of parent cell, which leads to formation of two identical daughter cells; parent cell disappears; no division occurs if there is not enough space to place daughter cells in dish</li>
14 <li>Sexual reproduction - formation of four daughter cells instead of two collided parent cells; occurs with certain probability when cells meet; the probability rises as environment conditions worsen; similarly to asexual reproduction, nothing happens if there's lack of space for daughter cells</li>
15 <li>Mutation - cell's property, which is transmitted with 100% probability in asexual reproduction process and with lower probability in sexual reproduction process; is caused by user and appears in random cell of population</li>
17 <li>Environment - condition which influences cells' behaviour, is set by user and measured on scale [0:100] (from the worst conditions to the best)</li>
18 <li>Collision - situation when distance between cells' centres is less than given threshold; collision leads either to sexual reproduction or change of cells' velocities (their directions)</li>
19 </ul>
22 Parameters which are defined before the start of simulation. They can't be changed while simulation is in progress
23 <pre>
24 Number of cells [1-10] - number of cells in dish at start of simulation
25 Diameter of Petri dish [100-500] - defines the size of Petri dish
26 Cell's lifetime [1-1000] - defines period of cell's life in dish
27 Asexual(sexual) reproduction (on/off) - activates or disables chosen type of reproduction
28 </pre>
29 When you press "Submit" button, simulation is launched. After that this button is replaced by "Stop" button, which can stop the simulation at any time.<br>
30 Once there are no cells in dish left, the simulation stop automatically.
31 <br>
33 Parameters which can be changed at any time
34 <pre>
35 Environment [1-100] - influences on probability of cell's sexual reproduction
36 </pre>
37 In addition, by pressing "Add mutation" button you add mutation to living population.
38 <br><br>
40 When "Show statistics" button is pressed, a window appears with information about:
41 <ul>
43 <li>total number of cells - number of all cells which lived in dish during the whole time of simulation</li>
48 </ul>
49 </body>