Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Beams with Unsymmetric Loadings

Beams with Unsymmetric Loadings

Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...

Beams with Symmetric Loadings

Beams with Symmetric Loadings

The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...

Deflection of a Beam

Deflection of a Beam

Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...

Impact Loading on a Cantilever Beam

Impact Loading on a Cantilever Beam

The analysis of a cantilever beam with a circular cross-section subjected to impact loading at its free end illustrates the conversion of potential energy from a dropped object into kinetic energy, which is then absorbed by the beam as strain energy. This process is crucial for understanding how materials behave under dynamic loads, which is important in fields such as construction and aerospace.
When an object is dropped onto the free end of a cantilever, its potential energy due to gravity is...

Linear Approximation in Frequency Domain

Linear Approximation in Frequency Domain

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....

Shearing Stresses in a Beam: Problem Solving

Shearing Stresses in a Beam: Problem Solving

A cantilever beam with a rectangular cross-section under distributed and point loads experiences shearing stresses. The analysis begins by identifying the loads acting on the beam. Then, the reactions at the beam's fixed end are calculated using equilibrium equations. The vertical reaction is a combination of the distributed and point loads, while the moment reaction is the sum of their moments. The shear force distribution along the beam, resulting from these loads, is established by creating...

You might also read

Related Articles

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

Sort by

Same author

Pro-inflammatory microbiota mediates the effect of host risk genes in Crohn's disease.

Frontiers in microbiology·2026

Same author

Regulating inflammation microenvironment and tenogenic differentiation as sequential therapy promotes tendon healing in diabetic rats.

Journal of orthopaedic translation·2025

Same author

Engineered covalent triazine framework inverse opal beads for enhanced photocatalytic carbon dioxide reduction.

Journal of colloid and interface science·2025

Same author

Bioactive 3D Electrohydrodynamic Printed Lattice Architectures Augment Tenogenesis of Tendon Stem/Progenitor Cells.

ACS applied materials & interfaces·2024

Same author

Brominated metal phthalocyanine-based covalent organic framework for enhanced selective photocatalytic reduction of CO<sub>2</sub>.

Journal of colloid and interface science·2023

Same author

Prediction model of gleason score upgrading after radical prostatectomy based on a bayesian network.

BMC urology·2023

Search research articles

Related Experiment Video

Updated: Mar 18, 2026

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Published on: June 13, 2023

Iterative Robust Capon Beamforming with Adaptively Updated Array Steering Vector Mismatch Levels.

Tao Zhang¹, Liguo Sun¹

¹Department of Electronic Engineering and Information Science, University of Science and Technology of China, Hefei 230027, China.

International Scholarly Research Notices

|June 30, 2016

Summary

This study introduces an improved adaptive beamformer that enhances signal-to-interference-and-noise ratio (SINR) by iteratively searching for the array steering vector (ASV) and adapting to array imperfections.

More Related Videos

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Published on: March 6, 2019

Related Experiment Videos

Last Updated: Mar 18, 2026

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays

Published on: June 13, 2023

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station

Published on: April 1, 2020

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Evaluating Targeting Accuracy in the Focal Plane for an Ultrasound-guided High-intensity Focused Ultrasound Phased-array System

Published on: March 6, 2019

Area of Science:

Signal Processing
Array Signal Processing
Adaptive Beamforming

Background:

Conventional adaptive beamformers are susceptible to array steering vector (ASV) mismatch.
Direction of arrival (DOA) errors significantly degrade signal-to-interference-and-noise ratio (SINR) performance.

Purpose of the Study:

To develop a robust adaptive beamforming approach that mitigates ASV mismatch and other array imperfections.
To enhance the signal-to-interference-and-noise ratio (SINR) in practical scenarios.

Main Methods:

An iterative approach to search for the ASV of the desired signal using a robust capon beamformer (RCB).
Adaptive updating of uncertainty levels derived from quadratically constrained quadratic programming (QCQP) and subspace projection theory.
Incorporation of adaptive flat ellipsoid models to address multiple array imperfections simultaneously.

Main Results:

The proposed iterative beamformer demonstrates decreasing estimated uncertainty levels.
The method effectively handles various array imperfections, improving robustness.
Numerical simulations confirm superior performance compared to existing methods.

Conclusions:

The novel iterative beamformer offers enhanced robustness against ASV mismatch and array imperfections.
This approach significantly improves SINR performance in challenging signal environments.
The adaptive flat ellipsoid models provide a tight representation of array uncertainties.