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qpGraph is a software program that is part of the ADMIXTOOLS [2] software package developed by Patterson et al. (2012). qpGraph evaluates graph-based models of population relationships with genetic admixture. [1] It estimates likelihoods of graphs with a fixed topology, [6] [7] while adjusting graph parameters to fit observed f-statistics. [8]
FreeCAD is a general-purpose parametric 3D computer-aided design (CAD) modeler and a building information modeling (BIM) software application with finite element method (FEM) support. [4] It is intended for mechanical engineering product design but also expands to a wider range of uses around engineering, such as architecture or electrical ...
PTC Inc. (formerly Parametric Technology Corporation) is an American computer software and services company founded in 1985 and headquartered in Boston, Massachusetts.The company was a pioneer in parametric, associative feature-based, solid computer-aided design (CAD) modeling software in 1988, including an Internet-based product for Product Lifecycle Management (PLM) in 1998.
This pedal is a parametric equalizer. Equalization, or simply EQ, in sound recording and reproduction is the process of adjusting the volume of different frequency bands within an audio signal. The circuit or equipment used to achieve this is called an equalizer. [1] [2] Most hi-fi equipment uses relatively simple filters to make bass and ...
IMSI made the strategic decision to release v3 in both 16 and 32 bit versions giving users the best of both worlds during the rocky transition of the market from Windows 3.1 to Windows 95. Since then, Alex Presniak and many of the same Russian developers (Sergey Nazarov, TurboCAD team leader; Leonid Robin, SDK development) continued to work on ...
An optical parametric amplifier, abbreviated OPA, is a laser light source that emits light of variable wavelengths by an optical parametric amplification process. It is essentially the same as an optical parametric oscillator , but without the optical cavity (i.e., the light beams pass through the apparatus just once or twice, rather than many ...
Parametric resonance is the parametrical resonance phenomenon of mechanical perturbation and oscillation at certain frequencies (and the associated harmonics). This effect is different from regular resonance because it exhibits the instability phenomenon.
An adaptive equalizer is an equalizer that automatically adapts to time-varying properties of the communication channel. [1] It is frequently used with coherent modulations such as phase-shift keying, mitigating the effects of multipath propagation and Doppler spreading. Adaptive equalizers are a subclass of adaptive filters.