by Trent Guidry
21. February 2010 13:18
UNIQUAC equation and activity coefficients.
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by Trent Guidry
20. February 2010 11:28
The Soave Redlich Kwong equation and the equations for calculating pure component and mixture fugacities.
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by Trent Guidry
17. January 2010 03:08
The latest version of the .NET 4.0 C# source code and solution files for the previous numerical methods
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by Trent Guidry
9. October 2009 07:33
In this post I develop the Runge Kutta 5 4 Fehlberg class, which implements a fifth/fourth order Runge Kutta Fehlberg with adaptive step sizing.
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by Trent Guidry
8. October 2009 04:54
In this post I develop the RungeKutta5Butcher class, which implements a fifth order Runge Kutta Butcher.
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by Trent Guidry
8. October 2009 03:16
In this post I develop the RungeKutta4 class, which implements a fourth order Runge Kutta.
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by Trent Guidry
7. October 2009 12:21
In this post I develop the Runge Kutta 3 class, which implements a third order Runge Kutta.
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by Trent Guidry
7. October 2009 11:48
In this post I develop the RungeKutta2Ralston class, which implements a second order Runge Kutta Ralston.
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by Trent Guidry
7. October 2009 11:20
In this post I develop the RungeKutta2ImprovedPolygon class, which implements a second order Runge Kutta Improved Polygon.
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by Trent Guidry
7. October 2009 07:11
In this post I develop the RungeKutta2Heun class, which implements a second order Runge Kutta Heun.
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by Trent Guidry
7. October 2009 06:36
In this post I develop the Euler class, which implements a first order Runge Kutta.
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by Trent Guidry
7. October 2009 05:38
In this post I develop the base class used by numerical algorithms that solve systems of ordinary differential equations, such as the Euler and Runge Kutta algorithms.
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by Trent Guidry
4. October 2009 09:33
In this post I give an example of using the previously created BFGS and DFP classes to solve an unconstrained optimization problem.
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by Trent Guidry
4. October 2009 09:11
In this post I develop the BFGS / Broyden Fletcher Goldfarb Shanno class which is a quasi Newton numerical method that can be used for unconstrained optimization problems.
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by Trent Guidry
4. October 2009 08:12
In this post I develop the DFP / Davidon Fletcher Powell class which is a quasi Newton numerical method that can be used for unconstrained optimization problems.
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by Trent Guidry
4. October 2009 06:35
In this post I develop the quasi Newton base class which will be used as the base class for algorithms that implement quasi Newton numerical methods, such as the DFP and BFGS algorithms.
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by Trent Guidry
3. October 2009 08:21
In this post I develop the code for the cubic bracketing class.
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by Trent Guidry
3. October 2009 07:51
In this post I develop the code for the Swann bracketing class.
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by Trent Guidry
3. October 2009 05:28
In this post I develop the code for the bracketing base class.
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by Trent Guidry
2. October 2009 06:03
In this post I develop the code for the cubic region elimination class.
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by Trent Guidry
2. October 2009 04:56
In this post I develop the code for the parabolic region elimination class.
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by Trent Guidry
1. October 2009 10:29
In this post I develop the code for the golden section region elimination class.
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by Trent Guidry
1. October 2009 07:34
In this post I develop the code for the interval halving region elimination class.
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by Trent Guidry
1. October 2009 05:41
In this post I create the base classes used by the region elimination optimization routines.
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by Trent Guidry
30. September 2009 06:22
In this post I will develop a function on the Polynomial class that takes four points, fits a third order polynomial (a cubic) to them, and then attempts to find the minimum value of the polynomial.
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by Trent Guidry
30. September 2009 05:40
In this post I will develop a function on the Polynomial class that takes three points, fits a second order polynomial (a parabola) to them, and then attempts to find the minimum value of the polynomial.
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by Trent Guidry
16. August 2009 03:03
In this post I will give an example of using the previously created Levenberg Marquardt class to solve a nonlinear regression problem.
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by Trent Guidry
15. August 2009 02:59
The Antoine correlation is a fairly simple vapor pressure model that works reasonably well over a limited range of temperatures and pressures.
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by Trent Guidry
15. August 2009 02:35
The Clausius Clapeyron correlation is a simple, although not very accurate, vapor pressure model.
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by Trent Guidry
12. August 2009 14:01
In this post I will create the Levenberg Marquardt class, which can be used for nonlinear regression using the Levenberg Marquardt algorithm with numerical derivatives.
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by Trent Guidry
9. August 2009 12:38
In this post I will create the Gauss Newton class, which can be used for nonlinear regression using the Gauss Newton algorithm with numerical derivatives.
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by Trent Guidry
3. August 2009 13:51
In this post I will give an example of using the previously created Newton Raphson class using numerical derivatives to solve a system of nonlinear equations.
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by Trent Guidry
2. August 2009 06:39
In this post I will create the Newton Raphson class, which can be used to find the roots of a system of nonlinear equations using the Newton Raphson method.
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by Trent Guidry
1. August 2009 05:22
In this post I expand on the previous post on Linear and Multiple Linear Regression and give examples of regressing polynomial coefficients.
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by Trent Guidry
30. July 2009 13:26
In this post I will add functions to compute the partial derivative of a function on a class derived from ModelBase with respect to a Parameter.
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by Trent Guidry
26. July 2009 07:44
In this post I will create the Parameter class. This is a class used in future numerical methods and represents a parameter on a model such as the temperature, pressure, volume, etc.
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by Trent Guidry
19. July 2009 10:59
In this post I will set up the framework for doing linear and multiple linear regression. Linear regression is a fairly simple way of fitting equation parameters to a set of observed data.
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by Trent Guidry
18. July 2009 06:14
In this post I will develop a function that takes a series of x and y points and fits a univariate polynomial to them.
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by Trent Guidry
12. July 2009 08:10
In this post I develop a class for numerically differentiating a function using equally spaced values of that function.
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by Trent Guidry
11. July 2009 05:49
In this post I will modify the previously created matrix class to use parallel processing with the .NET 4.0 class System.Threading.Parallel.
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by Trent Guidry
10. July 2009 12:48
The Peng Robinson equation and the equations for calculating pure component and mixture fugacities.
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by Trent Guidry
30. June 2009 13:35
In this post I will add the solution of matrix equations using LU decomposition with partial pivoting, and matrix inversion to the matrix class.
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by Trent Guidry
22. June 2009 14:43
In this post I will add matrix addition, subtraction, multiplication, and scalar multiplication to the matrix class.
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by Trent Guidry
20. June 2009 11:36
This post will be about creating a matrix class, cloning it, transposing it, creating an identity matrix, and converting a matrix to and from an array.
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by Trent Guidry
14. June 2009 06:49
WPF ContextMenus with RoutedCommands and CommandBindings can be disabled due to a focusing issue that appears to be a bug in WPF.
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by Trent Guidry
13. June 2009 09:53
For a WPF TabControl, the SelectionChanged event fires whenever any child that inherits from Selector, such as ListBox, ComboBox, TabControl, or ListView fires its SelectionChanged event.
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by Trent Guidry
11. June 2009 15:01
A post about accessing the user interface from a worker thread in WPF.
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