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相关概念视频

Types Of Transformers01:16

Types Of Transformers

968
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...
968
Transformers with Off-Nominal Turns Ratios01:25

Transformers with Off-Nominal Turns Ratios

150
In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
150
The Ideal Transformer01:26

The Ideal Transformer

379
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...
379
Transformers in Distribution System01:27

Transformers in Distribution System

102
Transformers in distribution systems can be broadly categorized into distribution substation transformers and other distribution transformers. They are crucial for stepping down high transmission voltages to levels suitable for distribution and end-user applications.
Distribution substation transformers come in various ratings and typically use mineral oil for insulation and cooling. To prevent moisture and air from entering the oil, some transformers use an inert gas like nitrogen to fill the...
102
Improving Translational Accuracy02:07

Improving Translational Accuracy

10.1K
Base complementarity between the three base pairs of mRNA codon and the tRNA anticodon is not a failsafe mechanism. Inaccuracies can range from a single mismatch to no correct base pairing at all. The free energy difference between the correct and nearly correct base pairs can be as small as 3 kcal/ mol. With complementarity being the only proofreading step, the estimated error frequency would be one wrong amino acid in every 100 amino acids incorporated. However, error frequencies observed in...
10.1K
Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

106
Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
In the absence...
106

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相关实验视频

Updated: Jun 26, 2025

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

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一个多层次的关系意识变压器模型用于被封闭的人重新识别和重新识别.

Guorong Lin1, Zhiqiang Bao2, Zhenhua Huang3

  • 1School of Artificial Intelligence, South China Normal University, Foshan 528225, China.

Neural networks : the official journal of the International Neural Network Society
|May 18, 2024
PubMed
概括

这项研究引入了一种新的多级关系意识转换器 (MLRAT) 模型,通过学习图像补丁和样本之间的关系来改进被封闭的人重新识别 (Re-ID),优于对被封闭数据集的现有方法.

关键词:
被封闭的行人被封闭了.个人重新识别身份证自己蒸的自蒸.变压器 变压器 变压器

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Swin-PSAxialNet: An Efficient Multi-Organ Segmentation Technique
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Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
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相关实验视频

Last Updated: Jun 26, 2025

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Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
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科学领域:

  • 计算机视觉 计算机视觉
  • 人工智能的人工智能
  • 机器学习 机器学习

背景情况:

  • 被遮蔽的人重新识别 (Re-ID) 是一个重大的挑战,因为对象或其他行人遮蔽.
  • 现有的Re-ID方法通常依赖于像姿势估计这样的辅助模型,这种模型在闭塞时可能不可靠.
  • 以前的方法经常从单个图像中学习特征,忽视了对强大的Re-ID至关重要的样本间关系.

研究的目的:

  • 开发一种新的多级关系意识变压器 (MLRAT) 模型,用于增强被封闭的人重新识别.
  • 解决现有Re-ID技术中辅助模型和单图像特征学习的局限性.
  • 为了提高人重识别的准确性和稳定性,在具有显著遮的场景中.

主要方法:

  • 引入了多级关系感知变压器 (MLRAT) 模型,包括补丁级关系感知 (PLRA) 和样本级关系感知 (SLRA) 模块.
  • PLRA使用图形卷积网络 (GCN) 来模拟关键图像补丁之间的结构关系,绕过辅助模型.
  • SLRA使用关系意识变压器 (RAT) 块和自蒸来建模样本间的关系和转移知识.

主要成果:

  • 在四个被封闭的人 Re-ID 数据集上,MLRAT 模型显示了与现有基线相比显著的性能改进.
  • 该模型在部分和整体人重识别数据集上保持了竞争性表现.
  • 通过模拟补丁关系,PLRA有效地学习了局部特征,而SLRA捕获了歧视性样本级特征.

结论:

  • 拟议的MLRAT模型通过利用多层次的关系建模,有效地解决了被封闭的人重新识别的挑战.
  • 新的PLRA和SLRA模块为学习歧视性特征提供了强大的框架,而不依赖辅助模型.
  • MLRAT为被封闭的人重新识别提供了优质的解决方案,在各种数据集类型中显示出强大的概括性.