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

Types of Aggregate Grading01:15

Types of Aggregate Grading

381
Aggregate grading is crucial in economically obtaining a concrete mix with adequate strength, reasonable workability, and minimal segregation. There are four types of aggregate gradation: well-graded, uniformly (or one-sized) graded, gap-graded, and open-graded.
Well-graded aggregates include a complete range of necessary size fractions that fit together to create a dense matrix with minimal voids, represented by a smooth, continuous gradation curve. This type of grading ensures good...
381
Design Example: Aggregate Gradation01:24

Design Example: Aggregate Gradation

85
The right type and quality of aggregates are crucial for concrete as they significantly influence its properties, mix proportions, and cost-effectiveness. If different sources are available for sand, the commonly used fine aggregate in concrete, the selection of sand is primarily based on its gradation.
The grading, or particle-size distribution, of sand is determined using sieve analysis, with standard sizes ranging from 150 μm to 10 mm (ASTM No. 100 sieve to 3⁄8 in. sieve). Sand is...
85
Source Transformation01:15

Source Transformation

3.3K
Source transformation is a fundamental technique employed in circuit analysis, offering a valuable tool for simplifying complex electrical circuits. This technique involves the replacement of either a voltage source in series with a resistor by a current source in parallel with a resistor, or vice versa. The key concept here is that when the original sources are deactivated (turned off), the equivalent resistance at the circuit's end terminals remains the same.
It is essential to note that when...
3.3K
Aliasing01:18

Aliasing

107
Accurate signal sampling and reconstruction are crucial in various signal-processing applications. A time-domain signal's spectrum can be revealed using its Fourier transform. When this signal is sampled at a specific frequency, it results in multiple scaled replicas of the original spectrum in the frequency domain. The spacing of these replicas is determined by the sampling frequency.
If the sampling frequency is below the Nyquist rate, these replicas overlap, preventing the original...
107
Buffer Effectiveness02:19

Buffer Effectiveness

48.4K
Buffer solutions do not have an unlimited capacity to keep the pH relatively constant . Instead, the ability of a buffer solution to resist changes in pH relies on the presence of appreciable amounts of its conjugate weak acid-base pair. When enough strong acid or base is added to substantially lower the concentration of either member of the buffer pair, the buffering action within the solution is compromised.
The buffer capacity is the amount of acid or base that can be added to a given volume...
48.4K
Forced Transdifferentiation01:28

Forced Transdifferentiation

1.9K
Transdifferentiation, also known as lineage reprogramming, was first discovered by Selman and Kafatos in 1974 in silkmoths. They observed that the moths’ cuticle-producing cells transformed into salt-producing cells. Many such cases of natural transdifferentiation occur in organisms. In humans, pancreatic alpha cells can become beta cells. In newts, the loss of the eye’s lens causes the pigmented epithelial cells to transdifferentiate into the lens cells.
Artificial...
1.9K

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

Image-Quality-Aware Multimodal Artificial Intelligence for Automated Structured OCT Report Generation in Glaucoma Evaluation.

Ophthalmology science·2026
Same author

Development and Validation of a Computational Histology Artificial Intelligence-Powered Biomarker in Metastatic Hormone-Sensitive Prostate Cancer on Randomized Phase III Trials.

JCO precision oncology·2026
Same author

Enhancing Volumetric Imaging in Linear-Array Photoacoustic Tomography: multiview fusion with deep learning.

IEEE transactions on bio-medical engineering·2026
Same author

Motion prediction for leader manipulator of teleoperation system with large time delay based on inverse optimal control.

ISA transactions·2026
Same author

[TCM pathogenesis and acupuncture-moxibustion differentiation and treatment of Crohn's disease based on the "liver-spleen-intestine" axis].

Zhongguo zhen jiu = Chinese acupuncture & moxibustion·2026
Same author

Does New Rapid Optical Coherence Tomography Angiography Acquisition Affect Image Quality in Healthy and Diseased Eyes?

Translational vision science & technology·2026

相关实验视频

Updated: May 24, 2025

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
07:12

Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

Published on: April 11, 2025

263

基于OCTA的AMD阶段分级增强通过类条件的风格转移.

Haochen Zhang, Anna Heinke, Krzysztof Broniarek

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |March 5, 2025
    PubMed
    概括
    此摘要是机器生成的。

    这项研究增强了与年龄相关的黄斑变性 (AMD) 诊断的深度学习,使用光学连贯断层扫描血管学 (OCTA) 图像进行诊断. 一个新的类条件的CycleGAN提高了OCTA数据的多样性,提高了AMD的诊断准确性.

    更多相关视频

    A Computerized Functional Skills Assessment and Training Program Targeting Technology Based Everyday Functional Skills
    07:31

    A Computerized Functional Skills Assessment and Training Program Targeting Technology Based Everyday Functional Skills

    Published on: February 13, 2020

    6.7K
    Design and Evaluation of Smart Glasses for Food Intake and Physical Activity Classification
    07:47

    Design and Evaluation of Smart Glasses for Food Intake and Physical Activity Classification

    Published on: February 14, 2018

    11.2K

    相关实验视频

    Last Updated: May 24, 2025

    Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss
    07:12

    Development of a Gaze-Contingent Display Framework Designed for Perceptual and Oculomotor Research with Simulated Central Vision Loss

    Published on: April 11, 2025

    263
    A Computerized Functional Skills Assessment and Training Program Targeting Technology Based Everyday Functional Skills
    07:31

    A Computerized Functional Skills Assessment and Training Program Targeting Technology Based Everyday Functional Skills

    Published on: February 13, 2020

    6.7K
    Design and Evaluation of Smart Glasses for Food Intake and Physical Activity Classification
    07:47

    Design and Evaluation of Smart Glasses for Food Intake and Physical Activity Classification

    Published on: February 14, 2018

    11.2K

    科学领域:

    • 眼科医生 眼科 眼科
    • 医疗成像医学成像
    • 人工智能的人工智能

    背景情况:

    • 光学连贯断层扫描血管图 (OCTA) 对于在与年龄相关的黄斑变性 (AMD) 中可视化视网膜血管结构至关重要.
    • 深度神经网络 (DNN) 显示了使用OCTA诊断AMD的潜力,但数据稀缺性是一个显著的限制.

    研究的目的:

    • 为了研究在OCTA图像上训练的DNN分类器对AMD诊断的有效性.
    • 通过采用风格转移技术来解决有限的OCTA数据.
    • 增强OCTA图像数据集,以提高分类准确度.

    主要方法:

    • 来自海德堡和Optovue仪器的OCTA数据组合.
    • 使用CycleGAN进行OCTA工具之间的域调整.
    • 拟议的类条件的CycleGAN,有监督/无监督的约束,用于增强功能学习.
    • 在增强的OCTA数据集上训练有素的DNN分类器.

    主要成果:

    • 使用CycleGAN丰富的OCTA数据集进行风格转移.
    • 以类为条件的CycleGAN有效地改善了数据多样性.
    • 在两个OCTA领域,DNN分类的准确性显著提高.
    • 拟议的方法在提高AMD诊断方面表现出有效性.

    结论:

    • 基于类条件的CycleGAN是增强OCTA数据的可行策略.
    • 这种方法有效地提高了基于DNN的AMD诊断精度.
    • 该研究强调了AI和OCTA在非侵入性AMD检测方面的潜力.