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Related Concept Videos

Rectangular and Triangular Pulse Function01:19

Rectangular and Triangular Pulse Function

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The unit rectangular pulse function is mathematically represented by a rectangular function centered at the origin with a height of one unit. This function is defined by two parameters: T, which specifies the center location of the pulse along the time axis, and τ, which determines the pulse duration.
For example, consider a rectangular pulse with a 5V amplitude, a 3-second duration, and centered at t=2 seconds. This pulse can be expressed using the rectangular function, written as,
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A pulse is a short burst of radio waves distributed over a range of frequencies that simultaneously excites all the nuclei in the sample. Upon passing a radio frequency pulse along the x-axis, the nuclei absorb energy corresponding to their Larmor frequencies and achieve resonance. This shifts the net magnetization vector from the z-axis toward the transverse plane. This angle of rotation of the magnetization vector, or the flip angle, is proportional to the duration and intensity of the pulse.
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Pulse rhythm01:30

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
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Equivalent Circuits for Practical Transformers01:28

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The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
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Types Of Transformers01:16

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Related Experiment Video

Updated: Aug 30, 2025

High-precision Electromagnetic Flowmeter with Empty Pipe Detection via Complex Programmable Logic Device-based Waveform Recognition
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A Generalized Transformer-Based Pulse Detection Algorithm.

Dario Dematties1,2, Chenyu Wen3,4, Shi-Li Zhang5

  • 1Northwestern Argonne Institute of Science and Engineering, Northwestern University, 2205 Tech Drive Suite 1-160, Evanston, 60208 Illinois, United States.

ACS Sensors
|August 30, 2022
PubMed
Summary
This summary is machine-generated.

A new machine learning method, pulse detection transformer (PETR), objectively identifies pulse-like signals in noisy data, improving single molecule analysis without user-defined thresholds.

Keywords:
artificial neural networkgeneralized algorithmmachine learningnanopore sensingspike recognitiontransformer

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Area of Science:

  • Single molecule analysis
  • Nanopore sensing
  • Machine learning applications

Background:

  • Pulse-like signals are common in single molecule analysis, such as in nanopore experiments.
  • Detecting these signals in noisy data is challenging, with current methods relying on subjective thresholds.

Purpose of the Study:

  • To develop an objective, generalized machine learning method for pulse detection.
  • To improve the accuracy and objectivity of pulse recognition in time-sequential data.

Main Methods:

  • A novel machine learning model, the pulse detection transformer (PETR), was developed.
  • PETR determines precise start and end time points for individual pulses.
  • The method was validated on simulated and experimental nanopore translocation data.

Main Results:

  • PETR demonstrated competitive performance in pulse detection using standard metrics.
  • The method successfully identified pulse segments without requiring user-defined thresholds.
  • The generalized output of PETR was shown to be compatible with downstream feature extraction algorithms.

Conclusions:

  • PETR offers an objective and generalized approach to pulse detection in noisy signals.
  • This method enhances the processing of single molecule analysis data, particularly from nanopore experiments.
  • The model's adaptability supports various downstream applications in data analysis.