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

Beams with Unsymmetric Loadings01:17

Beams with Unsymmetric Loadings

168
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...
168
Beams with Symmetric Loadings01:15

Beams with Symmetric Loadings

239
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...
239
Shearing Stresses in a Beam: Problem Solving01:14

Shearing Stresses in a Beam: Problem Solving

296
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...
296
Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

201
In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
201
Distribution of Stresses in a Narrow Rectangular Beam01:11

Distribution of Stresses in a Narrow Rectangular Beam

237
In studying beam stress distribution, examining an elemental section is essential. To determine the average shearing stress on this face, the calculated shear is divided by the surface area. Importantly, shearing stresses on the beam's transverse and horizontal planes mirror each other, indicating a consistent stress distribution along the upper region of the beam. Notably, shearing stresses are absent at the beam's upper and lower surfaces due to the absence of applied forces in these...
237
Design of Prismatic Beams for Bending01:23

Design of Prismatic Beams for Bending

364
The design of prismatic beams, structural elements with a uniform cross-section, focuses on ensuring safety and structural integrity under load. The design process begins by determining the allowable stress, either from material properties tables, or by dividing the material's ultimate strength by a safety factor. This safety factor is essential for accommodating uncertainties, and varies depending on the material—timber, steel, or concrete—with each having unique strength and...
364

You might also read

Related Articles

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

Sort by
Same author

Intraoperative supraglottic airway device, anesthetic, and mechanical factors associated with acute postoperative sore throat in elective tympanoplasty: a retrospective cohort study.

BMC anesthesiology·2026
Same author

Fluorination switches CO-arene binding to a π-hole regime, enabling nonclassical carbonyl behaviour.

Physical chemistry chemical physics : PCCP·2026
Same author

An interpretable multimodal model integrating clinical, spectral CT imaging, and deep learning analysis of intra- and peritumoral regions for preoperative prediction of perineural invasion in gastric cancer: A prospective, multicenter study.

Computerized medical imaging and graphics : the official journal of the Computerized Medical Imaging Society·2026
Same author

Conformational landscape and tunneling dynamics in 3-fluorobenzylamine: a rotational spectroscopy and computational study.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy·2026
Same author

BCAT1-dependent HIF-1α stabilization is a targetable metabolic vulnerability in hepatocellular carcinoma.

Cell reports. Medicine·2026
Same author

Multiple interactions tailoring nanocellulosic-carbon dots membrane for synergistic, self-cleaning and recyclable interception of heavy metals/dyes pollutants in wastewater.

Journal of hazardous materials·2026
Same journal

Correction: Kang et al. Fluid Flow to Electricity: Capturing Flow-Induced Vibrations with Micro-Electromechanical-System-Based Piezoelectric Energy Harvester. <i>Micromachines</i> 2024, <i>15</i>, 581.

Micromachines·2026
Same journal

Femtosecond Laser Texturing of Wood Coatings with Bio-Based Epoxy and Wax Additives for Enhanced Hydrophobicity.

Micromachines·2026
Same journal

Engineering of Optoelectronic Devices for Renewable Energy Applications.

Micromachines·2026
Same journal

Phase Transformation and Electrochemical Behavior of Hexagonal TiO<sub>2</sub> Nanotubes Under Different Annealing Temperatures and Heating Rates.

Micromachines·2026
Same journal

Process Optimization and Predictive Modeling of Femtosecond Laser Precision Milling for Commercial PMMA Slices.

Micromachines·2026
Same journal

A Hybrid Preprocessing Multi-Objective Surrogate Model for Thermal MEMS Actuators.

Micromachines·2026
See all related articles

Related Experiment Video

Updated: Sep 6, 2025

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
05:04

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

Published on: June 13, 2023

1.7K

Robust Adaptive Beamforming Algorithm for Sparse Subarray Antenna Array Based on Hierarchical Weighting.

Jian Yang1, Xinxin Liu1, Yuwei Tu1

  • 1School of Engineering, Rocket Force University of Engineering, Xi'an 710025, China.

Micromachines
|June 24, 2022
PubMed
Summary
This summary is machine-generated.

This study introduces a robust adaptive beamforming algorithm for sparse antenna arrays. The novel hierarchical weighting method enhances signal-to-interference-and-noise ratio (SINR) and robustness in challenging conditions.

Keywords:
Covariance Matrix reconstructionarray antennadigital beamformingsparse subarray

More Related Videos

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

7.9K
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.0K

Related Experiment Videos

Last Updated: Sep 6, 2025

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
05:04

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

Published on: June 13, 2023

1.7K
Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar
07:14

Tracking Infiltration Front Depth Using Time-lapse Multi-offset Gathers Collected with Array Antenna Ground Penetrating Radar

Published on: May 1, 2018

7.9K
Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

5.0K

Area of Science:

  • Electrical Engineering
  • Signal Processing
  • Antenna Theory

Background:

  • Sparse antenna arrays offer advantages in space, real-time processing, and cost.
  • Existing beamforming techniques face challenges with sparse subarray configurations.

Purpose of the Study:

  • To develop a robust adaptive beamforming algorithm for sparse antenna arrays based on subarrays.
  • To improve Signal-to-Interference-and-Noise Ratio (SINR) and robustness.

Main Methods:

  • A hierarchical weighting approach is proposed.
  • Conventional beamforming calculates subarray element weights.
  • Synthetic subarray signals serve as metadata for Interference-plus-Noise Covariance Matrix (INCM) reconstruction.
  • A convex optimization model estimates the true guide vector, accounting for signal pointing errors.

Main Results:

  • The algorithm reconstructs the INCM through 2D spatial integration.
  • It estimates the guide vector and obtains inter-subarray weights.
  • Simulation results demonstrate superior SINR and robustness compared to existing methods.

Conclusions:

  • The proposed hierarchical weighting beamforming algorithm is effective for sparse antenna arrays.
  • It offers significant improvements in SINR and robustness for sparse subarray antenna systems.