Software
jAndrei
jAndrei is a tool for creating, simulating and analysing discrete markov chains. It has a simple and easy to use graphical user interface, which allows you to specify the markov chains visually as graph. The simulation is based on a step-by-step matrix multiplication. The analysis function allows you to easily calculate the static probability distribution of the markov chain. jAndrei is successfully used in an environmental modelling course.
jAndrei is implemented as a standalone Java application, which runs on a wide range of operating systems, including Linux and Windows.
| Software: | jAndrei |
|---|---|
| Version: | 1.0 |
| Author: | Fabian Grüning |
| Platforms: | All Java capable operating systems. |
| Release date: | 2005-09-20 |
| Size: | 177kb |
| Package: | jAndrei-1.0.zip |
EcoScape
EcoScape is a C++ framework for the development of simulation software based on the hierarchical asymmetric cellular automata (HACA) approach. HACAs are an extension of the classical cellular automata, which allows asymetrical cells and multiple cell layers. A connection with common GIS systems is possible, if the InterGIS library is present. This is especially useful in land-use or city development models. Though, a lot of other fields of applications are imaginable.
The framework allows you to write your own HACA model easily by sub-classing the components provided with the package. A complete simulation kernel for simulation is also integrated. Included in the package is EcoLife, a demo application, which implements the famous "Game of Life" cellular automata with two layers and asymetrical cells. The package comes with a detailed handbook and tutorial in English and German.
| Software: | EcoScape |
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| Version: | 1.0 |
| Author: | Bert Speckels |
| Platforms: | Linux, BSD and Windows |
| Release date: | 2005-09-20 |
| Size: | 46MB |
| Package: | EcoScape-1.0.zip |
EcoSim
EcoSim is a C++-framework especially designed to support individual-oriented modelling and simulation of ecological systems. EcoSim brings together object-oriented discrete event simulation and ecology. The process of implementing individual-oriented models is facilitated by providing specific yet extensible classes for those parts, that are common to all such models. Using EcoSim, ecologists may concentrate on the unique parts of their models. Some of the special features provided by the framework are:
Specification of static and dynamic properties of Individuals. Individuals may perform actions at any time during the simulation process. Actions may be triggered by the individuals themselves, by other individuals, or by external events. EcoSim implements efficient schedulers to allow even thousands of individual actions to be handled.
Specification of dynamically changing environments. Cells of the environment are active objects as individuals are. They may perform any task, thereby updating the environment periodically or due to events. Cells may be grouped into neighbourhoods or hierarchically, thereby defining different spatial scales for an environment.
Support for on the fly analysis and animation of generated data. So called trace-objects may be connected to any action of any individual (including cells). Trace-objects automatically become active whenever an individual performs an action. Trace-objects may store those changes for later use or may report them directly to an animation process.
Although EcoSim was primarily designed for use in ecological models it can be used for any spatially explicit discrete-event object-oriented model for environmental applications. Individuals may be thought of objects in object-oriented modeling, which "live" in a limited compartment.
| Software: | EcoSim |
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| Version: | 2.3 |
| Author: | Dr. Helmut Lorek et. al. |
| Platforms: | Linux, Solaris and Windows |
| Release date: | 2005-09-20 |
| Size: | 2,7MB |
| Package: | EcoSim-2.3.zip |