Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Introduction to Vital Signs01:25

Introduction to Vital Signs

7.6K
Vital signs are physiological measurements that help key into the status of the body's essential functions. These include body temperature, pulse rate, respiratory rate, and blood pressure, commonly abbreviated as T, P, R, and BP. Some healthcare settings also consider oxygen saturation (SpO2) and, in specific contexts, pain and level of consciousness as additional vital signs.
Vital signs help healthcare professionals assess an individual's well-being and detect any functional changes...
7.6K
Guidelines For Measuring Vital Signs01:19

Guidelines For Measuring Vital Signs

2.8K
Following these guidelines can help nurses accurately measure vital signs, assess changes in patient conditions, and provide timely treatment when necessary. Adhering closely to the guidelines ensures the accuracy and reliability of the results.
Before taking a patient's vital signs, a nurse would consider and assess the patient's comfort level and ensure appropriate equipment is available.
2.8K
Signs of Puberty01:27

Signs of Puberty

1.4K
Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
1.4K
Introduction to the Sign Test01:10

Introduction to the Sign Test

1.3K
The sign test is an important tool in nonparametric statistics, offering a straightforward yet effective method for analyzing matched pairs, nominal data, or hypotheses concerning the median of a population. It transforms data points into positive or negative signs, avoiding the need for assumptions about data distribution and instead focusing on the direction of change. It is particularly valuable when data does not conform to the normal distribution requirements of many parametric tests. For...
1.3K
Sign Convention01:30

Sign Convention

3.4K
When analyzing a beam subjected to various loads, it is crucial to understand the internal forces and moments generated within the structure. These internal forces can be broadly classified into normal forces, shear forces, and bending moments. To determine these forces and moments, we use the method of sections and apply a specific sign convention based on their direction and the side of the section being analyzed.
The normal force acts perpendicular to the beam's cross-section and can...
3.4K
Sign Test for Nominal Data01:12

Sign Test for Nominal Data

382
The sign test is a nonparametric method used to evaluate hypotheses about the median of a single sample or to compare the medians of two related samples. The sign test is particularly useful when dealing with nominal data, which includes distinct categories without an inherent order, such as names, labels, and preferences. Nominal data restricts statistical analysis to evaluating population proportions rather than mean or median values that require continuous data.
For example, consider a...
382

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Dual MXene/COF separator with ion-sieving channels and electrocatalytic surfaces for high-performance and durable Li-S batteries.

Nanoscale·2026
Same author

Development of a soil cadmium bioaccessibility prediction model for human health risk assessment.

iScience·2026
Same author

Hydrothermal Synthesis, Stability, Antioxidant Activity and Effect of Carbon Dots from <i>Bletilla Striata</i> on the Growth of Mung Bean Sprouts.

ACS applied bio materials·2025
Same author

Novel Yunaconitine Derivatives as Protein Tyrosine Phosphatase 1B Inhibitors and Radical Scavenger: Design, Synthesis, in Vitro Cellular Evaluation, and Molecular Docking Study.

Chemistry & biodiversity·2025
Same author

Self-Healing, Hemostatic, and Antioxidant Chitosan Hydrogel Loaded with Sophora Japonica Carbon Dots and ZnO NPs for Wound Healing.

Macromolecular bioscience·2025
Same author

Synthesis of Isosteviol derivatives as potential anticancer agents, especially for ovarian Cancer: In vitro cytotoxicity, cell cycle arrest, network pharmacology and molecular docking study.

Bioorganic & medicinal chemistry letters·2025

Related Experiment Video

Updated: Jan 21, 2026

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications
03:31

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications

Published on: December 15, 2023

1.0K

A radar vital signs detection method in complex environments.

Chaoyan Zhang1, Hui Liu1, Yi Zhu2

  • 1School of Information, Xiamen University, Xiamen, 10384, China.

Scientific Reports
|January 19, 2026
PubMed
Summary

Frequency-modulated continuous wave (FMCW) radar offers non-contact vital sign monitoring. New methods improve distance detection accuracy by 40% and heart rate estimation to 83%, with only a 4% error in real-world tests.

Keywords:
Frequency modulated continuous waveLeast square methodNoncontact vital signs monitoringRespiratory harmonics

More Related Videos

Author Spotlight: Imaging Pericytes Post-Subarachnoid Hemorrhaging in Rodents
05:11

Author Spotlight: Imaging Pericytes Post-Subarachnoid Hemorrhaging in Rodents

Published on: August 18, 2023

1.6K
Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible
14:44

Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible

Published on: May 13, 2025

2.3K

Related Experiment Videos

Last Updated: Jan 21, 2026

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications
03:31

Author Spotlight: Enhancement of Salient Object Detection for Smart Grid Applications

Published on: December 15, 2023

1.0K
Author Spotlight: Imaging Pericytes Post-Subarachnoid Hemorrhaging in Rodents
05:11

Author Spotlight: Imaging Pericytes Post-Subarachnoid Hemorrhaging in Rodents

Published on: August 18, 2023

1.6K
Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible
14:44

Harmonic Radar Tags for Insect Tracking: Lightweight, Low-cost, and Accessible

Published on: May 13, 2025

2.3K

Area of Science:

  • Biomedical Engineering
  • Signal Processing
  • Radar Technology

Background:

  • Non-contact vital sign monitoring using FMCW radar is crucial.
  • Environmental masking and respiratory harmonics degrade radar-based vital sign accuracy.
  • Accurate distance detection and heart rate estimation remain challenging.

Purpose of the Study:

  • To develop robust methods for distance detection and heart rate estimation using FMCW radar.
  • To mitigate interference and suppress respiratory harmonics in complex environments.
  • To enhance the precision of non-contact vital sign monitoring.

Main Methods:

  • Matrix Coefficient Selection Method (MCSM) for robust distance detection and interference suppression.
  • Recursive Least Squares Respiratory Harmonic Suppression (RLSRHS) for mitigating respiratory harmonics.
  • FMCW radar signal processing for vital sign analysis.

Main Results:

  • MCSM reduced Mean Absolute Error (MAE) in distance detection by approximately 40% compared to traditional methods.
  • RLSRHS achieved 83% accuracy in heart rate estimation by suppressing respiratory harmonics.
  • Real-world experiments showed a low error of about 4% compared to contact-based instruments.

Conclusions:

  • The proposed MCSM and RLSRHS methods significantly improve the accuracy and robustness of FMCW radar-based vital sign monitoring.
  • These advancements enable reliable non-contact monitoring in challenging environments.
  • The developed techniques offer a promising alternative to traditional contact-based vital sign measurement devices.