Dynamic Knowledge Models

Our collection of DKM is set to expand. Some are already developed, others are under development or in the project stage. Once the development cost of a DKM is funded, it is placed under the LGPL license; otherwise, it is under the CC by-nc-nd license.

Learn more about DKM.

Interactive geometry

With this model, the user constructs interactive geometric figures. The resulting figures can then be deformed with the mouse. Using scripts, we create a very wide variety of figures, some of them very complex when loops or recursion are implemented. This DKM will be an adaptation of Dr. Geo, for joint use as a DKM module and standalone application. | canvas r f u | canvas := DrGeoSketch new axesOn scale: 500. r := canvas float: 2 at: 0 @ -0.1 from: 0 to: 4 name: 'r' showValue: true. f := [ :x | r value * x * (1 - x) ]. canvas ray: 0@0 to: 1@1. canvas plot: f from: 0 to: 1. u := canvas pointOnLine: (canvas segment: 0@0 to: 1@0) hide at: 0.2. 100 timesRepeat: [ | v | v := canvas " v sequence term " point: [ :previous | previous point x @ (f value: previous point x) ] parent: u. canvas segment: u to: v. u := canvas " u is a point on the Ray (0,0) (1,1) " point: [:previous | previous point y @ previous point y ] parent: v. v hide. u hide. canvas segment: u to: v. v := u]

Gas Simulator

The model allows defining a rectangular enclosure and an arbitrary number of walls and argon atoms. The model simulates ideal gases and an interaction with the walls by diffuse reflection or real gases with both the wall interaction and the Lennard-Jones inter-atomic potential. During the simulation, the temperature setpoint of all walls, including the enclosure, is adjusted with the mouse. An arbitrary number of temperature probes covering rectangular areas is also available. ...

Timeline

The model allows representing a timeline with an arbitrary number of events. Each event includes a date and a description. A timeline with very scattered events can be compressed using the shrink message. Timeline title: 'Five Defining Moments of Alexander' :: addEvent: 'Tutelage by Aristotle. At age 13, he began three years of study under the most famous philosopher of the time.' on: '-343.1.1'; addEvent: 'Accession to the Throne. His father, Philip II, was assassinated, making Alexander King of Macedon at age 20.' on: '-336.10.1'; addEvent: 'Cutting the Gordian Knot. He symbolically became the destined ruler of Asia by violently "untying" the legendary knot.' on: '-333.5.1'; addEvent: 'Victory at Gaugamela. His decisive military triumph over Darius III, effectively ending the Achaemenid Persian Empire.' on: '-331.10.1'; addEvent: 'Death in Babylon. His sudden death at age 32, leaving no clear heir and causing his vast empire to fragment.' on: '-323.6.11'; width: 2; color: Color yellow darker