Downloads Structural Equation Model
The Ikeda Delay Differential Equation model shows the dynamics of a delay differential equation that depends on the value of the dynamical variable x(t) at a previous time x(t-?). Sprott shows that these systems provide elegant examples of chaos in systems that are too simple to exhibit chaos...
Platforms: Mac
License: Freeware | Size: 778.24 KB | Download (37): Ikeda Delay Differential Equation Model Download |
The Two Dimensional Schrodinger Equation model simulates the time evolution of a two-dimensional wave packet as it moves towards a slit with an obstacle in it, both with variable widths. By changing three parameters via sliders provided, slit width, obstacle width, and initial position of the...
Platforms: Mac
License: Freeware | Size: 71.68 KB | Download (36): Two Dimensional Schrodinger Equation Download |
Despite the fact that many phenomenon in physical or social sciences involve interaction between causal factors, it seems that very few researchers using multiple regression or structural equation modeling techniques do investigate for the presence of those interactions. If fact, in the context...
Platforms: Windows
License: Freeware | Size: 645 KB | Download (49): ITALASSI Download |
This zip file contains three separate guis. One solves and plots a system of functions given the inputs of 2 or more functions. The second one solves a 2 system differential equation model using the 4th order runga-kutta method. The third one is just a demo gui of how my components work for my...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 61.44 KB | Download (47): system of equations solver Download |
XLSTAT is a complete analysis and statistics add-in for Excel. It has been developed since 1993. XLSTAT includes more than 240 features in general or field-specific solutions. The use of Excel as an interface makes XLSTAT a user-friendly and highly efficient statistical and multivariate data...
Platforms: Windows, Windows 8, Windows 7, Windows Server
License: Demo | Cost: $295.00 USD | Size: 219.34 MB | Download (4680): XLSTAT Download |
Filtering of non-stationary periodic components from signals using a multi-order Vold-Kalman Filter.The Vold-Kalman Filter, introduced by HdoDEvard Vold and Jan Leuridan in 1993, is able to extract non-stationary periodic components from a signal using a known frequency vector [1]. Being...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 10 KB | Download (50): Second generation Vold-Kalman Order Filtering Download |
Modest Ordinary Differential Equation Library is a C++ library to model rate equations. MODEL is a numeric simulation library written during my PhD to simulate systems of rate equations describing Vertical Cavity Surface Emitting Lasers (VCSELs). I decided to write one myself after looking at...
Platforms: *nix
License: Freeware | Size: 2.5 MB | Download (154): Modest Ordinary Differential Equation Library Download |
We use the genetic algorithm (gatool) to determine the three parameters of the simple Antoine equation and the six parameters of the Modified Antoine Model. Predictions are in perfect agreement with experimental data of vapor pressure of ethanol versus temperature for a temperature range from...
Platforms: Matlab
License: Freeware | Size: 20.48 KB | Download (44): Model Determination using Genetic Algorithm: Application to Vapour Pressure vs Temperature Equations Download |
This model demonstrates how to implement a coupled structural-aerodynamic problem.The wing, otherwise rigid, is allowed to pitch and plunge. The motion of the wing is defined using SimMechanics blocks. The aerodynamic model is a simple, quasi-steady formulation.Dynamic pressure is manipulated by...
Platforms: Matlab
License: Freeware | Size: 81.92 KB | Download (52): Flutter Analysis Model Download |
The Rocking Semicircular Hoop model shows the dynamics of a simple object rocking without slipping on a horizontal surface. It is a supplemental simulation for an article by Leaf Turner and Ari Turner "Asymmetric rolling bodies and the phantom torque" in the Am. J. Phys. 78, 905 (2010). The...
Platforms: Mac
License: Freeware | Size: 785.41 KB | Download (37): Rocking Semicircular Hoop Model Download |
The Ejs Duffing Phase model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2?zN*x' - x (1 - x2) = f cos(?Ya* t), where each prime denotes a time derivative. The simulation displays the evolution of a group of oscillators with similar initial parameters on a phase...
Platforms: Mac
License: Freeware | Size: 1.38 MB | Download (37): Duffing Phase Model Download |
The Ejs Duffing Chaos model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2?zN*x' - x (1 - x2) = f cos(?Ya* t), where each prime denotes a time derivative. The simulation displays two solutions with different initial positions and a plot of phase. The evolution...
Platforms: Mac
License: Freeware | Size: 1.38 MB | Download (40): Duffing Chaos Model Download |
The Ejs Duffing Poincare model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2?zN*x' - x (1 - x2) = f cos(?Ya* t), where each prime denotes a time derivative. The simulation displays the solution Poincare plot. The evolution parameters can be changed via textboxes....
Platforms: Mac
License: Freeware | Size: 1.34 MB | Download (40): Duffing Poincare Model Download |
The Circular Membrane Modes model displays the analytical wave equation solution for an ideal circular membrane with a fixed boundary. The solution is described by two integers m and n where n is a positive integer that counts the number of radial nodes and m counts the number of azimuthal...
Platforms: Mac
License: Freeware | Size: 102.4 KB | Download (34): Circular Membrane Modes Model Download |
The Ejs Duffing Attractor model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2?zN* x' - x (1 - x2) = f cos(?Ya* t), where each prime denotes a time derivative. The simulation displays a three-dimensional plot of phase space versus angle and three Poincare plots...
Platforms: Mac
License: Freeware | Size: 1.33 MB | Download (34): Duffing Attractor Model Download |
Introduction----------------This code simulates commodity spot prices using the Clewlow and Strickland one factor daily spot model using a Monte Carlo approach. The derived stochastic differential equations (SDEs) are solved using several finite difference schemes.The paper detailing the...
Platforms: Matlab
License: Shareware | Cost: $0.00 USD | Size: 266.24 KB | Download (45): Clewlow and Strickland Commodity one factor spot model Download |
Structural Vibration Control is a very vast field of research. It aims to develop such comfortable and firm structures that can survive in the condition of severe dynamic loadings such as earthquake, High winds etc Due to numerous advantages of Semi active such as low power consumption and...
Platforms: Matlab
License: Freeware | Size: 102.4 KB | Download (47): Structural Vibration Control System Download |
The Rectangular Well model displays the 2D energy eigenstates of a particle trapped in a very deep two-dimensional rectangular well. Because the Schr?*A*dinger equation for this system is separable into one-dimensional infinite square well Hamiltonians, the solution can be expressed as a product...
Platforms: Mac
License: Shareware | Cost: $0.00 USD | Size: 737.28 KB | Download (37): Rectangular Well Model Download |
The Heating and Cooling a Cylinder model computes the radial temperature distribution within a long cylinder as it is heated and cooled by a surrounding fluid. The cylinder is broken into shells and the temperature of each shell is computed using a finite difference approximation to the radial...
Platforms: Mac
License: Freeware | Size: 10.24 KB | Download (40): Heating and Cooling a Cylinder Model Download |
The Ejs Duffing Oscillator model computes the solutions to the non-linear Duffing equation, which reads, x'' + 2?zN*x' - x (1 - x2) = f cos(?Ya*t), where each prime denotes a time derivative. The simulation displays the solution as well as the phase space and Poincare plots, and energy diagram....
Platforms: Mac
License: Freeware | Size: 1.37 MB | Download (39): Duffing Oscillator Model Download |