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  2. Negative feedback - Wikipedia

    en.wikipedia.org/wiki/Negative_feedback

    Negative feedback (or balancing feedback) occurs when some function of the output of a system, process, or mechanism is fed back in a manner that tends to reduce the fluctuations in the output, whether caused by changes in the input or by other disturbances. A classic example of negative feedback is a heating system thermostat — when the ...

  3. Feedback - Wikipedia

    en.wikipedia.org/wiki/Feedback

    Negative feedback: If the signal feedback is out of phase by 180° with respect to the input signal, the feedback is called negative feedback. As an example of negative feedback, the diagram might represent a cruise control system in a car that matches a target speed such as the speed limit. The controlled system is the car; its input includes ...

  4. Perceptual control theory - Wikipedia

    en.wikipedia.org/wiki/Perceptual_control_theory

    Perceptual control theory (PCT) is a model of behavior based on the properties of negative feedback control loops. A control loop maintains a sensed variable at or near a reference value by means of the effects of its outputs upon that variable, as mediated by physical properties of the environment.

  5. Harold Stephen Black - Wikipedia

    en.wikipedia.org/wiki/Harold_Stephen_Black

    He published a classical paper on negative feedback amplifier in 1934, [4] which has been re-printed in the Proceedings of IEEE two times in 1984 and 1999 [5] [6] Inside his 1934 classical paper "Stabilized feed-back amplifiers", he mentioned Harry Nyquist's work on stability criterion because a negative feedback amplifier can be unstable and ...

  6. Error-related negativity - Wikipedia

    en.wikipedia.org/wiki/Error-related_negativity

    The ERN is a sharp negative going signal which begins about the same time an incorrect motor response begins, (response locked event-related potential), and typically peaks from 80 to 150 milliseconds (ms) after the erroneous response begins (or 40–80 ms after the onset of electromyographic activity).

  7. ‘No one should have to be fighting cancer and insurance at ...

    www.aol.com/no-one-fighting-cancer-insurance...

    Instead of being able to calmly focus on her chemotherapy treatment, Arete Tsoukalas had to spend hours on the phone arguing with her insurer while receiving infusions in the hospital.

  8. Today's Wordle Hint, Answer for #1271 on Wednesday, December ...

    www.aol.com/todays-wordle-hint-answer-1271...

    Hints and the solution for today's Wordle on Wednesday, December 11.

  9. Algorithm - Wikipedia

    en.wikipedia.org/wiki/Algorithm

    Flowchart of using successive subtractions to find the greatest common divisor of number r and s. In mathematics and computer science, an algorithm (/ ˈ æ l ɡ ə r ɪ ð əm / ⓘ) is a finite sequence of mathematically rigorous instructions, typically used to solve a class of specific problems or to perform a computation. [1]