September 30 – 273
Netlogo. The original model simulates the behavior of two different types of particles in a box with a partitioning wall. The basic principle of this model is that particles are assumed to have two elementary actions: they move and they collide — either with other particles or with any other objects such as walls. Some escape…
September 29 – 272
Netlogo. Autumn. Netlogo turns poetic! This model simulates the way in which leaves change their color and fall depending on sun intensity, rain and wind. Very timely to celebrate last night’s moon eclipse. Script by Reuven Lerner .
September 28 – 271
Netlogo. Reversible reaction. From a study of gas reaction, after Le Chatelier’s principle and Haber process.
September 27 – 270
Netlogo. Probability. 9 squares, 2 colors. This is the result of 10 variations on 512 possible arrangements with a 50% probability to be become one color. After a script by Abrahamson and Wilensky,
September 26 – 269
Netlogo. Modeling positive feedback after a concept by Michael Batty. Positive feedback is a delicate balance between constructive criticism and outright support – defined here by the square progression dark to light. Interestingly, when the channel Alpha – describing the activity is set at 0 the screen goes white, when it is set at 2 (maximum available) the screen goes black. When it is between 1.00 and 1.25 one gets interesting Vasarely – like patterns! Maybe art and creativity are the untold part of a well balanced life? Script by Seth Tisue.
September 25 – 268
Netlogo. The making of gold ball after a model that simulates a classic partial differential equation problem (heat diffusion) and study transient and steady-state temperature distribution on a thin plate. Script by Uri Wilensky.
September 24 – 267
Netlogo. 2D monochrome cellular automata after the Von Newman to Moore stability analysis formula. In numerical analysis, von Neumann stability analysis (also known as Fourier stability analysis) is a procedure used to check the stability of finite difference. Shapes and postioning are defined by neihborhood and n count.The color strip variation in the central motif exhibits the age of the patches – the darkest the oldest / the lightest – the latest. Script by Craig Brozefsky.