petri_dish
changeset 23:97768e4bbe61 tip
help
| author | Yashina Ksenia <ksenia_yashina@kodomo.fbb.msu.ru> |
|---|---|
| date | Thu, 23 Dec 2010 17:08:18 +0300 |
| parents | 69a4724e7cac |
| children | |
| files | about.html |
| diffstat | 1 files changed, 49 insertions(+), 0 deletions(-) [+] |
line diff
1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/about.html Thu Dec 23 17:08:18 2010 +0300 1.3 @@ -0,0 +1,49 @@ 1.4 +<head> 1.5 + <title>Petri dish</title> 1.6 + <meta http-equv="content-type" content="text/html; charset=windows-1251"> 1.7 +</head> 1.8 +<body> 1.9 +<h2>Petri dish</h2> 1.10 +Simulation of life inside Petri dish, where hypothetic unicellular organisms move and reproduce. 1.11 +<br><br> 1.12 +<h3>List of terms:</h3> 1.13 +<ul> 1.14 +<li>Cell - a unit of population, described by location in the dish, velocity and lifespan; can carry and transmit mutation </li> 1.15 +<li>Petri dish - area of cells' activity</li> 1.16 +<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> 1.17 +<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> 1.18 +<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> 1.19 +<li>Lifespan - time period between appearance and vanishing of cell from Petri dish</li> 1.20 +<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> 1.21 +<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> 1.22 +</ul> 1.23 + 1.24 +<h3>Initial parameters:</h3> 1.25 +Parameters which are defined before the start of simulation. They can't be changed while simulation is in progress 1.26 +<pre> 1.27 +Number of cells [1-10] - number of cells in dish at start of simulation 1.28 +Diameter of Petri dish [100-500] - defines the size of Petri dish 1.29 +Cell's lifetime [1-1000] - defines period of cell's life in dish 1.30 +Asexual(sexual) reproduction (on/off) - activates or disables chosen type of reproduction 1.31 +</pre> 1.32 +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> 1.33 +Once there are no cells in dish left, the simulation stop automatically. 1.34 +<br> 1.35 +<h3>Changeable parameters:</h3> 1.36 +Parameters which can be changed at any time 1.37 +<pre> 1.38 +Environment [1-100] - influences on probability of cell's sexual reproduction 1.39 +</pre> 1.40 +In addition, by pressing "Add mutation" button you add mutation to living population. 1.41 +<br><br> 1.42 +<h3>Statistics:</h3> 1.43 +When "Show statistics" button is pressed, a window appears with information about: 1.44 +<ul> 1.45 +<li>values of initial parameters</li> 1.46 +<li>total number of cells - number of all cells which lived in dish during the whole time of simulation</li> 1.47 +<li>maximum number of cells in dish (at one time)</li> 1.48 +<li>maximum number of cells in dish (at one time)</li> 1.49 +<li>total number of mutated cells - number of all mutated cells which lived in dish</li> 1.50 +<li>number of asexual/sexual reproduction events</li> 1.51 +</ul> 1.52 +</body> 1.53 \ No newline at end of file