Jove
Visualize
联系我们
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关概念视频

Three-Winding Transformers01:19

Three-Winding Transformers

272
Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
In the per-unit equivalent circuit of a grounded Y-Y three-phase...
272
The Ideal Transformer01:26

The Ideal Transformer

436
In single-phase two-winding transformers, two windings are coiled around a magnetic core characterized by cross-sectional area A and magnetic permeability μ. A phasor current i1 enters the left winding while i2 exits the right winding, establishing the fundamental working of the transformer through electromagnetic principles.
Ampere's Law forms the basis of understanding the magnetic field within the transformer. It states that the integral of the magnetic field intensity's...
436
Instrument Transformers01:23

Instrument Transformers

109
Instrument transformers, comprising voltage transformers (VTs) and current transformers (CTs), play crucial roles in power substations by providing isolated replicas of current or voltage for measurement and protection purposes. Voltage transformers reduce the primary voltage to levels suitable for relay operation and measurement, while current transformers scale down the primary current. The primary winding of a current transformer often consists of a single turn, achieved by threading the...
109
Types Of Transformers01:16

Types Of Transformers

1.0K
Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings.
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
However, if this ratio is less than one, the transformer is said to be a step-down...
1.0K
Equivalent Circuits for Practical Transformers01:28

Equivalent Circuits for Practical Transformers

481
The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
In a practical transformer, each winding exhibits resistance and leakage reactance. The...
481
Transformers01:26

Transformers

1.1K
A device that transforms voltages from one value to another using induction is called a transformer. A transformer consists of two separate coils, or windings, wrapped around the same soft iron core. However, they are electrically insulated from each other.
The iron core has a substantial relative permeability. Therefore, the magnetic field lines generated due to the current in one winding are almost entirely confined within the core, such that the same magnetic flux permeates each turn of both...
1.1K

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Role of reactive oxygen species in ultraviolet-induced photodamage of the skin.

Cell division·2024
Same author

Therapeutic potential of targeting polo-like kinase 4.

European journal of medicinal chemistry·2024
Same author

Fully integrated wearable microneedle biosensing platform for wide-range and real-time continuous glucose monitoring.

Acta biomaterialia·2023
Same author

Four New Species of <i>Strobilomyces</i> (Boletaceae, Boletales) from Hainan Island, Tropical China.

Journal of fungi (Basel, Switzerland)·2023
Same author

Pancancer analysis uncovers an immunological role and prognostic value of the m6A reader IGF2BP2 in pancreatic cancer.

Molecular and cellular probes·2023
Same author

LILRB3 Supports Immunosuppressive Activity of Myeloid Cells and Tumor Development.

Cancer immunology research·2023
Same journal

TraGraph-GS: Trajectory Graph-based Gaussian Splatting for Arbitrary Large-Scale Scene Rendering.

IEEE transactions on pattern analysis and machine intelligence·2026
Same journal

SWIFT: A Small-World Interaction Framework for Flow-Aware Trajectory Prediction in Autonomous Driving.

IEEE transactions on pattern analysis and machine intelligence·2026
Same journal

HardFlow: Hard-Constrained Sampling for Flow-Matching Models Via Trajectory Optimization.

IEEE transactions on pattern analysis and machine intelligence·2026
Same journal

Industrial Brain: Self-Evolving Neuro-Symbolic Autonomy with Causal Resilience for Cyber-Physical Systems.

IEEE transactions on pattern analysis and machine intelligence·2026
Same journal

Adaptive Hardness-Driven Dictionary Distillation for Incomplete Streaming View Clustering.

IEEE transactions on pattern analysis and machine intelligence·2026
Same journal

Mixture of Global and Local Experts with Diffusion Transformer for Controllable Face Generation.

IEEE transactions on pattern analysis and machine intelligence·2026
查看所有相关文章

相关实验视频

Updated: Jul 26, 2025

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images
04:23

A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images

Published on: April 21, 2023

1.9K

邻近视觉变压器 邻近视觉变压器

Weixuan Sun, Zhen Qin, Hui Deng

    IEEE transactions on pattern analysis and machine intelligence
    |June 13, 2023
    PubMed
    概括
    此摘要是机器生成的。

    邻近注意力将2D局部集成到视觉转换器的线性注意力中,从而实现高分辨率图像的高效处理. 这种方法实现了最先进的准确性,参数明显减少,计算增长比现有模型慢得多.

    更多相关视频

    Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
    07:45

    Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

    Published on: July 21, 2020

    4.5K
    Ocular Kinematics Measured by In Vitro Stimulation of the Cranial Nerves in the Turtle
    10:49

    Ocular Kinematics Measured by In Vitro Stimulation of the Cranial Nerves in the Turtle

    Published on: June 2, 2018

    8.5K

    相关实验视频

    Last Updated: Jul 26, 2025

    A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images
    04:23

    A Swin Transformer-Based Model for Thyroid Nodule Detection in Ultrasound Images

    Published on: April 21, 2023

    1.9K
    Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition
    07:45

    Assessing Binocular Central Visual Field and Binocular Eye Movements in a Dichoptic Viewing Condition

    Published on: July 21, 2020

    4.5K
    Ocular Kinematics Measured by In Vitro Stimulation of the Cranial Nerves in the Turtle
    10:49

    Ocular Kinematics Measured by In Vitro Stimulation of the Cranial Nerves in the Turtle

    Published on: June 2, 2018

    8.5K

    科学领域:

    • 计算机视觉 计算机视觉
    • 深度学习 (Deep Learning) 是一种深度学习.
    • 人工智能的人工智能

    背景情况:

    • 视觉转换器 (ViT) 在计算机视觉方面表现出色,但由于软max注意力的二次复杂性,在高分辨率图像方面遇到了困难.
    • 现有的NLP线性注意力方法无法充分利用对于视觉任务至关重要的固有二维局部.
    • 传统ViT的高计算和内存需求限制了它们的可扩展性到更大的图像尺寸.

    研究的目的:

    • 为视觉转换器开发一个线性注意力机制,有效处理高分辨率图像.
    • 将二维局部偏差纳入注意力机制,以提高视觉任务的性能.
    • 为了减少视觉变压器的计算复杂性和参数数量,而不会牺牲准确性.

    主要方法:

    • 提出了邻近注意力,这是一种线性注意力机制,根据2D曼哈顿距离对补丁进行权衡,优先考虑当地邻居.
    • 引入了具有特征减小注意力 (FRA) 和特征保存连接 (FPC) 的邻近注意力块,以管理特征维度复杂性.
    • 开发了近距离视觉变压器 (VVT),这是一个嵌入近距离注意力用于一般视觉任务的金字塔结构的骨干.

    主要成果:

    • 邻近注意力有效地将二维局部集成到线性注意力中,实现线性复杂性.
    • 邻近注意区块可以减少计算,而不会降低准确性.
    • 邻近视觉变压器 (VVT) 在CIFAR-100,ImageNet-1k和ADE20K数据集上展示了最先进的图像分类准确性.
    • 与以前的方法相比,VVT表现出较慢的计算开销增长率,输入分辨率增加.
    • VVT实现了最先进的结果,比现有方法减少了50%的参数.

    结论:

    • 邻近注意力提供了一个有效的解决方案,通过结合二维局部来将视觉变压器缩放为高分辨率图像.
    • 邻近视觉变压器 (VVT) 为各种计算机视觉任务提供了一个计算高效和参数光替代方案.
    • 这项工作在使基于变压器的模型更为实用和高性能,用于现实世界,高分辨率视觉应用方面取得了重大进展.