Search Results for "spectrum"

Tests on "neutrality" are designed to detect systematic deviations from chance patterns in genetic data. This tool computes for a given SNP site frequency spectrum some standard test statistics like Tajima's D, Fay & Wu's H, etc. Additionally, the user may adapt the tests to specific demographies by specifying non-standard first and secondary moments. These can be obtained e.g. from simulations.

Calculate electronic properties of graphene-like systems with a user friendly interface. The code uses the tight binding approximation and it is able to stude in a 0D, 1D and 2D geometries, orbital and magnetic fields, intrinsic and extrinsic spin-orbit coupling, sublattice imbalance, and interactions at the mean field level. The most recent version can be found in https://github.com/joselado/quantum-honeycomp Example...

A C++ class to enable prediction of the reflectance spectrum of two overprinted inks (i.e., solids), using the inverted Viggiano trapping equation.

The Java applet QuartzCrystal shows the frequency response of quartz crystals and Pierce crystal oscillators. Crystal parameters can be freely choosen. Display is spectrum analyzer-like and shows the amplitude/phase and/or a Nyquist diagram. Crystals can be series resonant or with load capacitance. Adding of spurious resonances is possible.

A sleep research experiment manager, EDF (EEG, EMG etc) with power spectrum analysis and visualisation, and Process S ('sleep pressure') estimation following Achermann et al (1993).

An extensible simulator for cognitive radio system and spectrum utilization.