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  2. Group delay and phase delay - Wikipedia

    en.wikipedia.org/wiki/Group_delay_and_phase_delay

    The group delay and phase delay properties of a linear time-invariant (LTI) system are functions of frequency, giving the time from when a frequency component of a time varying physical quantity—for example a voltage signal—appears at the LTI system input, to the time when a copy of that same frequency component—perhaps of a different physical phenomenon—appears at the LTI system output.

  3. Developmental regression - Wikipedia

    en.wikipedia.org/wiki/Developmental_regression

    Developmental regression is when a child who has reached a certain developmental stage begins to lose previously acquired milestones. [1] It differs from global developmental delay in that a child experiencing developmental delay is either not reaching developmental milestones or not progressing to new developmental milestones, while a child experiencing developmental regression will lose ...

  4. Delayed milestone - Wikipedia

    en.wikipedia.org/wiki/Delayed_milestone

    Developmental delay is prevalent in approximately 1-3% of children under the age of 5 worldwide. [5] According to a systematic analysis done for a conducted study in 2016, there are approximately 52.9 million children worldwide under the age of 5 that are affected by some type of developmental delay or delayed milestone.

  5. Differential diagnosis - Wikipedia

    en.wikipedia.org/wiki/Differential_diagnosis

    Machine differential diagnosis is the use of computer software to partly or fully make a differential diagnosis. It may be regarded as an application of artificial intelligence . Alternatively, it may be seen as "augmented intelligence" if it meets the FDA criteria, namely that (1) it reveals the underlying data, (2) reveals the underlying ...

  6. Polarization mode dispersion - Wikipedia

    en.wikipedia.org/wiki/Polarization_mode_dispersion

    A PMD compensation system is a device which uses a polarization controller to compensate for PMD in fibers.Essentially, one splits the output of the fiber into two principal polarizations (usually those with dτ dω = 0, i.e. no first-order variation of time-delay with frequency), and applies a differential delay to re-synchronize them.

  7. Developmental coordination disorder - Wikipedia

    en.wikipedia.org/wiki/Developmental_coordination...

    Developmental coordination disorder (DCD), also known as developmental motor coordination disorder, developmental dyspraxia or simply dyspraxia (from Ancient Greek praxis 'activity'), is a neurodevelopmental disorder [1] characterized by impaired coordination of physical movements as a result of brain messages not being accurately transmitted to the body.

  8. Talk:Group delay and phase delay - Wikipedia

    en.wikipedia.org/wiki/Talk:Group_delay_and_phase...

    4) Group delay, as mentioned by others on this talk page is quite complicated in concept. For example, it cannot give any difinitive or quantifiable information outside the context of modulation and demodulation. And group delay cannot even give the time delay of the DUT frequency components.

  9. DGD - Wikipedia

    en.wikipedia.org/wiki/DGD

    Differential group delay, a term from optics; Development, Growth & Differentiation, a scientific journal This page was last edited on 10 ...