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

What is an Electrochemical Gradient?01:26

What is an Electrochemical Gradient?

128.4K
Adenosine triphosphate, or ATP, is considered the primary energy source in cells. However, energy can also be stored in the electrochemical gradient of an ion across the plasma membrane, which is determined by two factors: its chemical and electrical gradients.
The chemical gradient relies on differences in the abundance of a substance on the outside versus the inside of a cell and flows from areas of high to low ion concentration. In contrast, the electrical gradient revolves around an...
128.4K
Distance Corrections01:15

Distance Corrections

299
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
299
Power Factor Correction01:20

Power Factor Correction

549
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
549
Parallel Processing01:20

Parallel Processing

742
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
742
Parallel Resonance01:23

Parallel Resonance

597
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
597
Trial and Error and Algorithm01:12

Trial and Error and Algorithm

429
A problem-solving strategy is a plan of action used to find a solution. Different strategies have distinct action plans. Trial and error involves trying different solutions until one works. For instance, to fix a broken printer, you might check ink levels, ensure the paper tray isn't jammed, and verify the printer's connection to your laptop. This method can be time-consuming but is commonly used. Thomas Edison, for example, used trial and error to find a suitable filament for the light...
429

You might also read

Related Articles

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

Sort by
Same author

Targeting astrocytic Dp71 attenuates BBB disruption after traumatic brain injury through WTAP-associated m<sup>6</sup>A regulation of MMP2.

Science advances·2026
Same author

Privacy-Preserving Virtual Contrast-enhanced MRI for Nasopharyngeal Carcinoma: A Multi-center Study.

International journal of radiation oncology, biology, physics·2026
Same author

Ultrasonic levitation-based contactless actuation for reflective optical beam steering.

Optics express·2026
Same author

Topological Engineering of Filler Distributions in Dielectric Composites to Boost High-Temperature Capacitive Energy Storage Performance.

Small (Weinheim an der Bergstrasse, Germany)·2026
Same author

Development and Validation of a Quantitative LC-MS/MS Method for Measuring CYP4V2 Enzyme Activity via 12-Hydroxylauric Acid in rAAV-hCYP4V2 Gene Therapy Products.

Molecules (Basel, Switzerland)·2026
Same author

Fine-tuned lightweight language models for structured extraction of liver cancer imaging free-text report: a comparative analysis with existing large language models.

BMC medical imaging·2026
Same journal

Denoising algorithm of Φ-OTDR systems based on adaptive fractional wavelet transform denoising.

Optics express·2026
Same journal

Millisecond photon-to-photon latency and high-speed volumetric projection system for optogenetics.

Optics express·2026
Same journal

Polarization-encoded coaxial structured light for high-precision 3D surface profilometry.

Optics express·2026
Same journal

Discrete freeform optical design based on collaborative optimization of point cloud and local normals.

Optics express·2026
Same journal

Ultrafast ghost imaging with 25 GHz speckle switching and wavelength-division multiplexing.

Optics express·2026
Same journal

Atomic vapor cells fabricated by femtosecond laser welding of standard-optical-quality glass.

Optics express·2026
See all related articles

Related Experiment Video

Updated: Feb 11, 2026

Polysome Profiling without Gradient Makers or Fractionation Systems
05:56

Polysome Profiling without Gradient Makers or Fractionation Systems

Published on: June 1, 2021

6.3K

Adaptive piston correction of sparse aperture systems with stochastic parallel gradient descent algorithm.

Zongliang Xie, Haotong Ma, Xiaojun He

    Optics Express
    |May 3, 2018
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces an autonomous phasing method for sparse aperture systems, using a stochastic parallel gradient descent algorithm to improve image quality. The technique enables precise piston correction without extra optics, validated in simulations and experiments.

    More Related Videos

    Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro
    06:22

    Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro

    Published on: August 28, 2019

    5.5K
    Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions
    09:36

    Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions

    Published on: August 26, 2021

    4.5K

    Related Experiment Videos

    Last Updated: Feb 11, 2026

    Polysome Profiling without Gradient Makers or Fractionation Systems
    05:56

    Polysome Profiling without Gradient Makers or Fractionation Systems

    Published on: June 1, 2021

    6.3K
    Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro
    06:22

    Stochastic Noise Application for the Assessment of Medial Vestibular Nucleus Neuron Sensitivity In Vitro

    Published on: August 28, 2019

    5.5K
    Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions
    09:36

    Direct Stochastic Optical Reconstruction Microscopy of Extracellular Vesicles in Three Dimensions

    Published on: August 26, 2021

    4.5K

    Area of Science:

    • Optical engineering
    • Adaptive optics
    • Image processing

    Background:

    • Phased sparse aperture systems offer high-resolution imaging with reduced size and weight.
    • Adaptive correction of piston is critical for stabilizing optical path differences in such systems.

    Purpose of the Study:

    • To present an autonomous phasing approach for sparse aperture systems.
    • To achieve precise piston correction without requiring additional optical components.

    Main Methods:

    • Utilizing a stochastic parallel gradient descent algorithm.
    • Employing iterative commanding of piston actuators.
    • Optimizing image quality for closed-loop control.

    Main Results:

    • Simulations confirmed the validity of the autonomous phasing approach.
    • Experimental results demonstrated successful piston correction using a binocular telescope testbed.
    • The method proved effective for laser point sources, white-light point sources, and extended objects.

    Conclusions:

    • The proposed closed-loop control for piston correction is autonomous and effective.
    • This method provides an economical solution for high-resolution imaging with phased sparse aperture systems.
    • The technique is versatile, applicable to various light sources and object types.