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  2. Tapering (mathematics) - Wikipedia

    en.wikipedia.org/wiki/Tapering_(mathematics)

    An example of a linear taper is () = +, and a quadratic taper () = + +. As another example, if the parametric equation of a cube were given by ƒ ( t ) = ( x ( t ), y ( t ), z ( t )), a nonlinear taper could be applied so that the cube's volume slowly decreases (or tapers) as the function moves in the positive z direction.

  3. Window function - Wikipedia

    en.wikipedia.org/wiki/Window_function

    The so-called "Planck-taper" window is a bump function that has been widely used [53] in the theory of partitions of unity in manifolds. It is smooth (a C ∞ {\displaystyle C^{\infty }} function) everywhere, but is exactly zero outside of a compact region, exactly one over an interval within that region, and varies smoothly and monotonically ...

  4. Multitaper - Wikipedia

    en.wikipedia.org/wiki/Multitaper

    The multitaper method overcomes some of the limitations of non-parametric Fourier analysis.When applying the Fourier transform to extract spectral information from a signal, we assume that each Fourier coefficient is a reliable representation of the amplitude and relative phase of the corresponding component frequency.

  5. Hann function - Wikipedia

    en.wikipedia.org/wiki/Hann_function

    The function is named in honor of von Hann, who used the three-term weighted average smoothing technique on meteorological data. [5] [2] However, the term Hanning function is also conventionally used, [6] derived from the paper in which the term hanning a signal was used to mean applying the Hann window to it.

  6. Tree volume measurement - Wikipedia

    en.wikipedia.org/wiki/Tree_volume_measurement

    To calculate trunk volume, the tree is subdivided into a series of segments with the successive diameters being the bottom and top of each segment and segment length being equal to the difference in height between the lower and upper diameters, or if the trunk is not vertical, the segment length can be calculated using the limb length formula ...

  7. Tree taper - Wikipedia

    en.wikipedia.org/wiki/Tree_taper

    Tree taper is the degree to which a tree's stem or bole decreases in diameter as a function of height above ground. Within Forestry and for the purposes of timber production, trees with a high degree of taper are said to have poor form, while those with low taper have good form. The opposite is the case for open-grown amenity trees.

  8. Popular Twitch streamer Ninja gets ‘low taper fade’ haircut ...

    www.aol.com/news/popular-twitch-streamer-ninja...

    “Imagine if ninja knew what a low taper fade was,” one TikTok user parodied in the comments on Ninja’s video. As an online public figure, Ninja has been the face of memes and internet trends ...

  9. Chord (aeronautics) - Wikipedia

    en.wikipedia.org/wiki/Chord_(aeronautics)

    Mean aerodynamic chord (MAC) is defined as: [6] = (), where y is the coordinate along the wing span and c is the chord at the coordinate y.Other terms are as for SMC. The MAC is a two-dimensional representation of the whole wing. The pressure distribution over the entire wing can be reduced to a single lift force