Lambda Theta Phi Usf

The function The LMFnlsq.m serves for finding optimal solution of an overdetermined system of nonlinear equations in the least-squares sense. The standard Levenberg- Marquardt algorithm was modified by Fletcher and coded in FORTRAN many years ago (see the Reference). This version of LMFnlsq is...

call: function to calculate BS call pricecall_vega: BS call vega (i.e. partial derivative of call with respect to vol)Phi: normal cdfPhiPrime: normal pdfimpvol: finds vol given a call pricedemo: a script demonstrating the impvol functiond1 and d2 are auxiliary functionsNOTE: the impvol function...

newLISP is a LISP-like scripting language that will help you in: programming for the internet, system administration, text processing, gluing other programs together, etc. newLISP is a scripting LISP for people who are fascinated by LISP's beauty and power of expression, but who need it stripped...


Platforms: Mac

Quaternion Library for SimulinkVersion 1.7 (JASP) 12-Dec-2009This is a library of blocks that allows manipulation of quaternions.The available blocks are: Quaternion Normalize Quaternion Conjugate Quaternion Multiply Quaternion Propagation Quaternion Vector Transform Quaternion Vector Rotation...


Platforms: Matlab

A few days ago I was in need of uniformly random points generation on the surface of sphere. I suddenly discovered that common parametrization with 2 angles is useless, it gathers too many points in the poles. At MathWorld you can find the complete demonstration, here the main lines:To pick a...


Platforms: Matlab

This function will calculate the wavelength of a given frequency. By default the program will presume the entered value is in MHZ. However if you want to enter a frequency in another scale you also have the option to enter the scaling parameter as well (khz,mhz, or ghz).function...


Platforms: Matlab

A user-friendly mathematical plotter. Its main purpose is displaying 2D/3D functions, defined in rectangular, polar and cylindrical coordinates, relations between variables, parametric curves/surfaces and vector fields. It is based on SDL and OpenGL


Platforms: Mac, BSD, Linux

This is a discrete event model that has been developed to computationally simulate the many interactions that occur between co-inhabiting populations of bacteriophage lambda and bacteria. Model qualifications are under review for scientific publication.


Platforms: Windows, Mac, Linux

This package has solvers for constrained and unconstrained L1 minimization, which is useful for compressed sensing. u = COORDL1BREG(A,f,lambda) solves the minimization problem min_u ||u||_1 subject to A*u = fwhere A is an MxN matrix and f is a vector of length M. Input lambda is a positive...


Platforms: Matlab

Phi = keplerSTM(x0,dt,mu) will return the state transition matrix Phi for a set of objects described by initial positions and velocities (x0) with gravitational parameters mu, propogated along Keplerian orbits for time dt. The positions and velocities at time dt is then given by Phi*x0. x0 must...


Platforms: Matlab

A newLISP - www.newlisp.org - macro which allows the user to 'define' callable foreign code inline just as they would 'define' a lambda or macro. C, Assembly and plain Object Code plugins are included. The Object Code plugin has no external dependencies. The C and Assembly plugins rely on the...


Platforms: Windows, Mac, Linux

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

For purposes of these tools, a quaternion, q, is just a four element vector where q(1:3) is the "imaginary" or "vector" portion of the hypercomplex number, and q(4) is the "real" or "scalar" portion. Consequently, if q represents a rotation, then: q(1) = v1*sin(phi/2) q(2) = v2*sin(phi/2) q(3) =...


Platforms: Matlab

Free Split and Merge Expectation-Maximization algorithm for Multivariate Gaussian Mixtures. This algorithm is suitable to estimate mixture parameters and the number of conpounds Usage ------- [logl , M , S , P] = fsmem_mvgm(Z , [M0] , [S0] , [P0] , [option]); Inputs ------- Z Measurements (d x N)...


Platforms: Matlab

Conversion routines to take a surface (a function z of (x,y) or (theta,r)) and convert this into a solid; much as meshz does, but a little more useful for outputting as an STL for frabrication in a 3D printer. There are two cases, one in Cartesian co-ordinates, and the other in polar...


Platforms: Matlab

Using Affymetrix CEL files as its source, this script combines quantile normalized SNP A and B probe intensities for each marker into a theta value, then calculates B-Allele Frequencies for each marker. For information on accessing B Allele Frequencies for Illumina data,


Platforms: Mac

EZFFT(T,U) plots the power spectrum of the signal U(T) , where T is a 'time' and U is a real signal (T can be considered as a space coordinate as well). If T is a scalar, then it is interpreted as the 'sampling time' of the signal U. If T is a vector, then it is interpreted as the 'time' itself....


Platforms: Matlab

UPPSALATOR is an electroosmotical oscilLATOR developed in UPPSALA by T. Teorell. Up to now oscillations were observed only at constant currrent. Oscillations at constantvoltage were considered earlier as impossible. This program demonstrates the UPPSALATOR at any constant voltage.It solves...


Platforms: Matlab

Compute European call option price using the Heston model and a conditional Monte-Carlo method [call_prices, std_errs] = Heston(S0, r, V0, eta, theta, kappa, strike, T, M, N)*******************************************************************************INPUTS: S0 - Current price of the underlying...


Platforms: Matlab

The Ramachandran Plot Explorer really offers something new. The Ramachandran Plot Explorer is designed to make it easy to examine the conformation of a polypeptide - through the interactive Ramachandran plot (?Ya* -?Y? angles) and ?Ya*?-angle tool. Simply click on a residue, then drag the marker...


Platforms: Mac