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

PD Controller: Design01:26

PD Controller: Design

199
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
199
Linear Approximation in Frequency Domain01:26

Linear Approximation in Frequency Domain

88
Linear systems are characterized by two main properties: superposition and homogeneity. Superposition allows the response to multiple inputs to be the sum of the responses to each individual input. Homogeneity ensures that scaling an input by a scalar results in the response being scaled by the same scalar.
In contrast, nonlinear systems do not inherently possess these properties. However, for small deviations around an operating point, a nonlinear system can often be approximated as linear....
88
Time-Domain Interpretation of PD Control01:07

Time-Domain Interpretation of PD Control

85
Proportional-Derivative (PD) control is a widely used control method in various engineering systems to enhance stability and performance. In a system with only proportional control, common issues include high maximum overshoot and oscillation, observed in both the error signal and its rate of change. This behavior can be divided into three distinct phases: initial overshoot, subsequent undershoot, and gradual stabilization.
Consider the example of control of motor torque. Initially, a positive...
85
Linear Approximation in Time Domain01:21

Linear Approximation in Time Domain

70
Nonlinear systems often require sophisticated approaches for accurate modeling and analysis, with state-space representation being particularly effective. This method is especially useful for systems where variables and parameters vary with time or operating conditions, such as in a simple pendulum or a translational mechanical system with nonlinear springs.
For a simple pendulum with a mass evenly distributed along its length and the center of mass located at half the pendulum's length,...
70
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

45
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
45
¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)01:20

¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

1.0K
When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
1.0K

You might also read

Related Articles

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

Sort by
Same author

The association between heat waves and pregnancy outcome among women undergoing assisted reproductive technology in Sichuan, China.

BMC public health·2026
Same author

Acute brain injury in adult post-cardiotomy cardiogenic shock patients receiving central vs. peripheral VA-ECMO: A single-center experience and systematic review with meta-analysis.

Perfusion·2026
Same author

CCR5+ CD8+ T Cells Are Associated with Poor Response to PD-1 Blockade Therapy.

International journal of molecular sciences·2026
Same author

Kinematic determinants of take-off performance in elite and sub-elite male long jumpers: a competition-based two-dimensional motion analysis.

Frontiers in physiology·2026
Same author

Development and external validation of an ICU mortality prediction model using routinely collected clinical data.

Medicine·2026
Same author

Exploring the Association of Systolic Blood Pressure and Intracranial Pressure Variability and Subarachnoid Hemorrhage Patient Outcomes.

Journal of clinical medicine·2026
Same journal

Advancing microalgae biomass cultivation for an integrated sustainable wastewater treatment and resource recovery.

iScience·2026
Same journal

Corrigendum to "Human adipose ECM alleviates radiation-induced skin fibrosis via endothelial cell-mediated M2 macrophage polarization" [iScience, Volume 26, Issue 9 (2023) 107660].

iScience·2026
Same journal

High-definition transcranial direct current stimulation enhances exercise-induced hypoalgesia in patients with chronic low back pain.

iScience·2026
Same journal

From pre-tumor to tumor: Decoding the endoscopic-pathologic spectrum of neoplastic lesions in autoimmune gastritis.

iScience·2026
Same journal

Corrigendum to "A cobalt-aluminium layered double hydroxide with a nickel core-shell structure nanocomposite for supercapacitor applications" [iScience, 28 (2025) 111672].

iScience·2026
Same journal

Repurposing primaquine diphosphate for imatinib-resistant chronic myeloid leukemia via targeting BCR-ABL and Wnt/β-catenin pathway.

iScience·2026
See all related articles

Related Experiment Video

Updated: Jun 13, 2025

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions
10:02

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions

Published on: May 27, 2021

4.0K

Face privacy protection scheme by security-enhanced encryption structure and nonlinear dynamics.

Zhiyu Xie1,2, Yiting Lin1,2, Tengyu Liu1,2

  • 1University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan 528402, China.

Iscience
|September 17, 2024
PubMed
Summary
This summary is machine-generated.

This study introduces a novel secure communication method using face detection and chaotic encryption for enhanced data protection. The technique offers robust security against common cyber threats.

Keywords:
Applied sciencesComputer scienceEngineering

More Related Videos

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
08:03

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

Published on: April 13, 2022

2.1K
Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants
06:59

Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants

Published on: March 1, 2019

7.7K

Related Experiment Videos

Last Updated: Jun 13, 2025

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions
10:02

Neutron Spin Echo Spectroscopy as a Unique Probe for Lipid Membrane Dynamics and Membrane-Protein Interactions

Published on: May 27, 2021

4.0K
Study of Protein Dynamics via Neutron Spin Echo Spectroscopy
08:03

Study of Protein Dynamics via Neutron Spin Echo Spectroscopy

Published on: April 13, 2022

2.1K
Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants
06:59

Environmental Dynamic Mechanical Analysis to Predict the Softening Behavior of Neural Implants

Published on: March 1, 2019

7.7K

Area of Science:

  • Computer Science
  • Cryptography
  • Image Processing

Background:

  • Secure communication is crucial in the digital age.
  • Existing encryption methods face challenges with complex data like images.
  • Face detection offers unique biometric features for security applications.

Purpose of the Study:

  • To propose a secure communication enhancement scheme using face detection and chaotic partition permutation.
  • To leverage facial information for robust image encryption.
  • To improve the security and effectiveness of digital communication.

Main Methods:

  • Utilizing edge detection for facial information extraction.
  • Employing chaotic systems to generate pseudo-random sequences for encryption.
  • Deriving secret keys from image hash values and external parameters.
  • Applying a series of encryption operations on face images.

Main Results:

  • The proposed scheme effectively encrypts facial information into ciphertext images.
  • Experimental results demonstrate excellent encryption effectiveness.
  • Security analysis confirms strong performance against various typical attacks.

Conclusions:

  • The face detection and chaotic partition permutation scheme provides a secure and effective method for communication enhancement.
  • The algorithm exhibits high security performance and resilience to attacks.
  • This approach offers a promising solution for secure image-based communication.