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

Observational Learning01:12

Observational Learning

131
Albert Bandura's observational learning, also known as imitation or modeling, occurs when a person observes and imitates another's behavior. It is a quicker process than operant conditioning. A well-known example is the Bobo doll study, where children who saw an adult acting aggressively towards the doll were more likely to act aggressively when left alone, compared to those who observed a nonaggressive adult. Many psychologists view observational learning as a form of latent learning...
131
Purposive Learning01:22

Purposive Learning

98
E. C. Tolman emphasized the purposiveness of behavior — the idea that much of our behavior is goal-directed. For instance, employees who aim for a promotion work diligently to meet their targets. Tolman argued that when classical conditioning and operant conditioning occur, the organism acquires certain expectations. In classical conditioning, a child might fear a dog because they expect it to bite. In operant conditioning, a person might consistently work overtime because they expect a...
98
Avoidance Learning and Learned Helplessness01:14

Avoidance Learning and Learned Helplessness

1.7K
Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
1.7K
Cognitive Learning01:21

Cognitive Learning

219
Cognitive learning is based on purposive behavior, incidental learning, and insight learning.
E. C. Tolman's theory of purposive behavior emphasizes that much behavior is goal-directed. He argued that to understand behavior, we must look at the entire sequence of actions leading to a goal. For instance, high school students study hard, not just due to past reinforcement but also to achieve the goal of getting into a good college.
Tolman introduced the idea that behavior is influenced by...
219
Fixed Action Patterns01:06

Fixed Action Patterns

15.8K
A fixed action pattern (FAP) is a specific, hard-wired sequence of behaviors that occurs in response to an external stimulus, called a sign stimulus. The behavior is “fixed” because it is essentially unchangeable—proceeding similarly across individuals of a species every time it occurs.
15.8K
Masking and Demasking Agents01:19

Masking and Demasking Agents

2.3K
EDTA titrations may necessitate masking and demasking agents to temporarily protect a particular metal ion in a mixture from the EDTA reaction. These agents facilitate the sequential analysis of the metal ions by forming stable complexes with some—but not all—metal ions during certain steps.
There are many masking agents, such as cyanide, fluoride, triethanolamine, thiourea, and 2,3-bis(sulfanyl)propan-1-ol (formerly 2,3-dimercapto-1-propanol), with the masking agent chosen based on...
2.3K

You might also read

Related Articles

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

Sort by
Same author

Adult ALCAPA Presenting with Apical Left Ventricular Aneurysm and Ventricular Arrhythmia.

Journal of cardiovascular echography·2026
Same author

Suggestive associations between genetically predicted gut microbiota and endometriosis: a two-sample Mendelian randomization study.

Journal of medical microbiology·2026
Same author

Deep learning-enabled temporal sequencing of metasurface for rewritable and customizable electromagnetic illusions.

National science review·2026
Same author

Resistance to Fenoxaprop-P-ethyl in Wild Oats May Involve GST-Mediated Enhanced Antioxidant Capacity.

Journal of agricultural and food chemistry·2026
Same author

Jingfang Granules for prevention of alcohol-induced hangover: a randomized, double-blind, crossover trial in healthy volunteers.

Frontiers in pharmacology·2026
Same author

Association Between Systemic Inflammation Response Index, Worsening of Left Ventricular Systolic Function and Prognosis in Patients with Coronary Artery Disease.

Journal of inflammation research·2026
Same journal

Electrospun Liquid Crystal Elastomers as Stress-Free Thermo- and Photoresponsive Actuators.

ACS applied materials & interfaces·2026
Same journal

Tunable Electrical Transport and Magnetic Anisotropy in Textured SrRuO<sub>3</sub> Films Mediated by Gap Control of Monolayer Ca<sub>2</sub>Nb<sub>3</sub>O<sub>10</sub> Nanosheet Templates.

ACS applied materials & interfaces·2026
Same journal

Label-Free Capacitive Immunosensing of Lactate Dehydrogenase and Interleukin-6 Using a Protein-Passivated Graphene Interface.

ACS applied materials & interfaces·2026
Same journal

Improved Carrier Transport and Enhanced Detection Sensitivity Through Zr<sup>4+</sup> Doping in LiYMo<sub>2</sub>O<sub>8</sub> Single Crystals for X-ray Detectors.

ACS applied materials & interfaces·2026
Same journal

Near-Infrared Light-Driven Microgrooved UCNPs/Azobenzene-LCE Actuators and Substrates for Cardiomyoblast Alignment.

ACS applied materials & interfaces·2026
Same journal

Recent Advances in Superlattice-Based Thermoelectrics.

ACS applied materials & interfaces·2026
See all related articles

Related Experiment Video

Updated: Jun 5, 2025

A Flexible Platform for Monitoring Cerebellum-Dependent Sensory Associative Learning
11:32

A Flexible Platform for Monitoring Cerebellum-Dependent Sensory Associative Learning

Published on: January 19, 2022

3.3K

FlexSARCloak: A Flexible SAR Cloak Driven by Task-Oriented Learning.

Huan Lu1,2,3, Caofei Luo1,4, Zhicheng Pei1,5

  • 1Interdisciplinary Center for Quantum Information, State Key Laboratory of Modern Optical Instrumentation, ZJU-Hangzhou Global Scientific and Technological Innovation Center, Zhejiang University, Hangzhou 310027, China.

ACS Applied Materials & Interfaces
|December 16, 2024
PubMed
Summary
This summary is machine-generated.

Researchers developed a flexible, broadband cloaking device using a novel learning approach. This flexible SAR cloak (FlexSARCloak) achieves high absorption and near-perfect invisibility, even in extreme conditions.

Keywords:
FlexSARCloakflexible cloakintelligent designmetasurfacetask-oriented learning

More Related Videos

Author Spotlight: Development of an Automated Camera-Based System for Real-Time Blast Overpressure Monitoring and TBI Risk Assessment in Military Training
06:20

Author Spotlight: Development of an Automated Camera-Based System for Real-Time Blast Overpressure Monitoring and TBI Risk Assessment in Military Training

Published on: December 6, 2024

2.6K
Eye-tracking Technology and Data-mining Techniques used for a Behavioral Analysis of Adults engaged in Learning Processes
10:43

Eye-tracking Technology and Data-mining Techniques used for a Behavioral Analysis of Adults engaged in Learning Processes

Published on: June 10, 2021

5.3K

Related Experiment Videos

Last Updated: Jun 5, 2025

A Flexible Platform for Monitoring Cerebellum-Dependent Sensory Associative Learning
11:32

A Flexible Platform for Monitoring Cerebellum-Dependent Sensory Associative Learning

Published on: January 19, 2022

3.3K
Author Spotlight: Development of an Automated Camera-Based System for Real-Time Blast Overpressure Monitoring and TBI Risk Assessment in Military Training
06:20

Author Spotlight: Development of an Automated Camera-Based System for Real-Time Blast Overpressure Monitoring and TBI Risk Assessment in Military Training

Published on: December 6, 2024

2.6K
Eye-tracking Technology and Data-mining Techniques used for a Behavioral Analysis of Adults engaged in Learning Processes
10:43

Eye-tracking Technology and Data-mining Techniques used for a Behavioral Analysis of Adults engaged in Learning Processes

Published on: June 10, 2021

5.3K

Area of Science:

  • Metamaterials and Nanophotonics
  • Electromagnetic Cloaking
  • Applied Physics

Background:

  • Traditional cloaking materials are often rigid, limiting their practical applications.
  • Achieving flexibility in cloaks is challenging due to uncontrollable scattering in complex electromagnetic environments.
  • The need for adaptable and robust invisibility solutions persists.

Purpose of the Study:

  • To design and demonstrate a broadband, polarization-independent, flexible cloak for Synthetic Aperture Radar (SAR) applications.
  • To overcome the limitations of rigid cloaking materials and address scattering challenges in flexible designs.
  • To validate the performance and stability of the flexible cloak under various environmental conditions.

Main Methods:

  • Development of a task-oriented learning (TOL) algorithm for metasurface design.
  • Fabrication and experimental testing of the flexible SAR cloak (FlexSARCloak).
  • Evaluation of electromagnetic performance across a wide frequency range (9-25 GHz) and incidence angles (0-60°).
  • Outdoor experiments using a Unmanned Aerial Vehicle (UAV)-mounted SAR system.
  • Environmental stress testing including extreme temperatures, humidity, and sandstorm simulations.

Main Results:

  • The FlexSARCloak demonstrated over 90% absorption efficiency across the 9-25 GHz band.
  • Near-perfect invisibility was achieved under UAV-mounted SAR in outdoor experiments.
  • The cloak maintained stable electromagnetic performance after exposure to extreme environmental conditions.
  • The TOL algorithm significantly accelerated metasurface design and optimization.

Conclusions:

  • The proposed FlexSARCloak offers a viable solution for flexible, broadband electromagnetic cloaking.
  • The developed TOL approach is effective for designing advanced metasurfaces.
  • The FlexSARCloak shows significant potential for applications in electromagnetic protection and multifunctional devices.