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  2. Five-point stencil - Wikipedia

    en.wikipedia.org/wiki/Five-point_stencil

    An illustration of the five-point stencil in one and two dimensions (top, and bottom, respectively). In numerical analysis, given a square grid in one or two dimensions, the five-point stencil of a point in the grid is a stencil made up of the point itself together with its four "neighbors".

  3. Multiple instruction, multiple data - Wikipedia

    en.wikipedia.org/wiki/Multiple_instruction...

    Examples of distributed memory (multiple computers) include MPP (massively parallel processors), COW (clusters of workstations) and NUMA (non-uniform memory access). The former is complex and expensive: Many super-computers coupled by broad-band networks. Examples include hypercube and mesh interconnections.

  4. Non-uniform discrete Fourier transform - Wikipedia

    en.wikipedia.org/wiki/Non-uniform_discrete...

    The nonuniform discrete Fourier transform of type I (NUDFT-I) uses uniform sample points = / but nonuniform (i.e. non-integer) frequencies . This corresponds to evaluating a generalized Fourier series at equispaced points. It is also known as NDFT [5] or forward NDFT [6] [7]

  5. Differential item functioning - Wikipedia

    en.wikipedia.org/wiki/Differential_item_functioning

    However, nonuniform DIF presents an interesting case. Rather than a consistent advantage being given to the reference group across the ability continuum, the conditional dependency moves and changes direction at different locations on the θ {\textstyle \theta } continuum. [ 12 ]

  6. Models of communication - Wikipedia

    en.wikipedia.org/wiki/Models_of_communication

    Many models of communication include the idea that a sender encodes a message and uses a channel to transmit it to a receiver. Noise may distort the message along the way. The receiver then decodes the message and gives some form of feedback. [1] Models of communication simplify or represent the process of communication.

  7. IEEE P1906.1 - Wikipedia

    en.wikipedia.org/wiki/IEEE_P1906.1

    The IEEE P1906.1 - Recommended Practice for Nanoscale and Molecular Communication Framework [1] is a standards working group sponsored by the IEEE Communications Society Standards Development Board whose goal is to develop a common framework for nanoscale and molecular communication. [2]

  8. Stencil (numerical analysis) - Wikipedia

    en.wikipedia.org/wiki/Stencil_(numerical_analysis)

    The Crank–Nicolson stencil for a 1D problem. In mathematics, especially the areas of numerical analysis concentrating on the numerical solution of partial differential equations, a stencil is a geometric arrangement of a nodal group that relate to the point of interest by using a numerical approximation routine.

  9. Signal-to-quantization-noise ratio - Wikipedia

    en.wikipedia.org/wiki/Signal-to-quantization...

    where is the number of bits in a quantized sample, and is the signal power calculated above. Note that for each bit added to a sample, the SQNR goes up by approximately 6 dB ( 20 × l o g 10 ( 2 ) {\displaystyle 20\times log_{10}(2)} ).