Surface Area Of A Sphere Equation

I needed to write a sed/awk Python equivalent for walking into a directory tree and renaming certain subdirectories, while also looking into all xml files on the way and replacing/modifying certain strings in those files.It would be nicer if someone could suggest an enhanced re.sub(regex,...

This example will show you how easy it is to draw objects using openGL.It draws a giant pyramid and you can walk around inside this foggy temple. Not much to it but it is suitable to learn from.

The function is based on the mathematical treatment of rotating rotors in "Principles of Helicopter Aerodynamics" by Dr. J.Gordon LeishmanThe numerical method does this by using Blade Element Momentum Theory (BEMT) to calculate the inflow along the length of the blade, then using that inflow and...


Platforms: Matlab

This is an extension of my single rotor analysis code.The function is based on the mathematical treatment of rotating rotors in "Principles of Helicopter Aerodynamics" by Dr. J.Gordon Leishman The numerical method does this by using Blade Element Momentum Theory (BEMT) to calculate the inflow...


Platforms: Matlab

This package includes files for modelling nonlinear dynamic systems using a recurrent generalized neural network. The learning scheme uses the complex method of nonlinear nonderivative optimization, thereby avoiding the problems of computing the derivative of an infinite impulse response filter...


Platforms: Matlab

This one line function adds up the ascii values of a string and returns the total as a checksum. Also included is a variation which returns the checksum mod 256 (so it can be used as a single byte).The same technique can be used to add up a list of numbers, or to return the average of a list...


Platforms: Windows, Mac, *nix, Python, BSD Solaris

With this equation we can find the specific volume of a real gas, in a rank of pressures, isothermally, knowing the factor acentrico the compound. The equation this in function to the understandability factor


Platforms: Matlab

We compare computed temperature distributions using both pdepe and analytical solutions for different geometries (slab, cylinder and sphere). Solids are kept initially at uniform temperature. For t>0, the boundary surface is kept at constant temperature. Results show excellent agreement....


Platforms: Matlab

In the programs, we perform flash calculations of a mixture of hydrocarbons (ethane, propane, n-butane and n-pentane) using the Rachford-Rice equation. The phi-phi method, based on the SRK equation of state, is used to compute the equilibrium constants. We also find the True Vapor Pressure. All...


Platforms: Matlab

The wheeled mobile robot dynamics are studied from standard papers available on the topic and non-linear feedback linearlization is done to reduce the equations of motion to a second order dynamic equation of the error of position of the wheeled robot. AVI file recording is also available for...


Platforms: Matlab

Capture-A-ScreenShot is a simple to use free screen capture software tool that captures screenshots. Capture a screenshot of the entire computer screen, last active screen, or selected area with a click of a button. This freeware screen capture tool will make it easy to grab a screenshot of...


Platforms: Windows

Minimal Surface Editor is a small and easy to use application written in Java that allows you to construct discrete minimal surfaces from the combinatorics of their curvature lines. It features a simple and comprehensive interface that gives you quick access to all its features. for WindowsAll


Platforms: Windows

This script contains a function to check on the occurence of a set of characters.


Platforms: Windows, Mac, *nix, Python, BSD Solaris

A differential equation can be solved by several methods. I have presented the simulink method to solve the differential equ. The que is showed in the screenshot.Queries and Comments are dearly invited.


Platforms: Matlab

The velocity and shear stress versus radial position are determined for laminar flow of a power law fluid in a pipe. The shooting method is used to verify the no-slip boundary condition at the piped-deOaos wall. Once the velocity at the center is determined, the governing equation is solved...


Platforms: Matlab

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

The Ejs Great Circles model displays the frictionless motion of a particle that is constrained to follow the surface of a perfect sphere. The sphere rotates underneath the particle, but since there is no friction, and the sphere is perfectly spherical, the motion of the particle is not influenced...


Platforms: Mac

WALE is a Wide Area Link Emulator which gives the flexibility of setting various parameters of a bottleneck link, such as packet send and receive rates, send/receive buffers, send/receive propagation delays, enabling random loss modules, etc. Any ISP has a high bandwidth LAN (of the order of...


Platforms: *nix

This module first does a net view command , and gets the list of computers in the domain. It connects to each computer , performs size check and returns the size of the harddisk. Please note that , the file and dir sizes are caluclated in DOS. Windows performs a sort of approximation. So there...


Platforms: Windows, Python,

This script uses the Linux SIOCGIFADDR ioctl to find the IP address associated with a network interface, given the name of that interface, e.g. "eth0". The address is returned as a string containing a dotted quad.


Platforms: *nix, Python, BSD