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

Calculations of Electric Potential II01:27

Calculations of Electric Potential II

1.7K
An electric dipole is a system of two equal but opposite charges, separated by a fixed distance. This system is used to model many real-world systems, including atomic and molecular interactions. One of these systems is the water molecule, but only under certain circumstances. These circumstances are met inside a microwave oven, where electric fields with alternating directions make the water molecules change orientation. This vibration is equivalent to heat at the molecular level.
Consider a...
1.7K
Series RLC Circuit with Source01:12

Series RLC Circuit with Source

452
Consider the operation of an automobile ignition system, a crucial component responsible for generating a spark by producing high voltage from the battery. This system can be described as a simple series RLC circuit, allowing for an in-depth analysis of its complete response.
In this context, the input DC voltage serves as a forcing step function, resulting in a forced step response that mirrors the characteristics of the input. Applying Kirchhoff's voltage law to the circuit yields a...
452
Mesh Analysis with Current Sources01:10

Mesh Analysis with Current Sources

1.4K
Mesh analysis becomes simpler when analyzing circuits with current sources, whether independent or dependent. The presence of current sources reduces the number of equations required for analysis. Two cases illustrate this:
Current Source in One Mesh: The analysis process is straightforward when a current source is found in only one mesh within the circuit. Mesh currents are assigned as usual, with the mesh containing the current source excluded from the analysis. Kirchhoff's voltage law...
1.4K
Source Transformation for AC Circuits01:11

Source Transformation for AC Circuits

612
The process of source transformation in the frequency domain entails the conversion of a voltage source, positioned in series with an impedance, into a current source that is parallel to an impedance, or the other way around. It is essential to maintain the following relationships while transitioning from one source type to another.
612
Superposition Theorem01:18

Superposition Theorem

628
The superposition principle is a fundamental concept stating that in a linear circuit, the voltage across (or current through) an element can be determined by summing the individual contributions of each independent source acting in isolation. When dealing with linear circuits containing multiple independent sources, this principle serves as a valuable tool for analysis. To apply the superposition principle effectively, one should focus on a single independent source at a time while...
628
Second Order systems II01:18

Second Order systems II

125
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
125

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

Digital performance testing reveals how redesigned return cannulas can enhance VV-ECMO performance.

Intensive care medicine experimental·2026
Same author

Structure Is Information: Structural Identifiability Mappings for Machine Learning With Partially Observed Dynamical Systems.

IEEE transactions on cybernetics·2026
Same author

Endocrine and metabolic determinants of cardiometabolic risk in mild autonomous cortisol secretion.

EBioMedicine·2026
Same author

AI-guided patient stratification improves outcomes and efficiency in the AMARANTH Alzheimer's Disease clinical trial.

Nature communications·2025
Same author

Whole-genome phenotype prediction with machine learning: open problems in bacterial genomics.

Bioinformatics (Oxford, England)·2025
Same author

Linear simple cycle reservoirs at the edge of stability perform Fourier decomposition of the input driving signals.

Chaos (Woodbury, N.Y.)·2025
Same journal

Physiological load and breath-holding in artistic swimming: a scoping review establishing historical baselines and evidence gaps in the context of the 2022-2025 rule changes.

Frontiers in physiology·2026
Same journal

Effects of blood flow restriction exercise interventions on patellofemoral pain syndrome: a systematic review and meta-analysis.

Frontiers in physiology·2026
Same journal

Effects of resistance-type and cycling-type high-intensity interval training on cardiorespiratory fitness, lower-body strength, and anaerobic fitness.

Frontiers in physiology·2026
Same journal

Model-based estimates of sex differences in peak power and fatigue index in track cyclists using directed acyclic graphs, inverse probability of treatment weighting, and Bayesian modeling.

Frontiers in physiology·2026
Same journal

Fine-tuning striated muscle performance: conserved sarcomere-level mechanisms across insect and vertebrate systems.

Frontiers in physiology·2026
Same journal

Effects of different dual-task trainings on gait and cortical activation during obstacle crossing in stroke patients: a randomized controlled trial.

Frontiers in physiology·2026
查看所有相关文章

相关实验视频

Updated: Jul 15, 2025

In Silico Clinical Trials for Cardiovascular Disease
09:09

In Silico Clinical Trials for Cardiovascular Disease

Published on: May 27, 2022

1.8K

一个单双极心脏源的两个步骤的反向解决方案.

Beata Ondrusova1,2, Peter Tino3, Jana Svehlikova1

  • 1Institute of Measurement Science, Slovak Academy of Sciences, Bratislava, Slovakia.

Frontiers in physiology
|September 25, 2023
PubMed
概括
此摘要是机器生成的。

识别关键的身体表面电极可以准确地确定心脏电源来源,如早发性心室收缩 (PVC). 这项研究表明,减少的电极组提供精确的PVC定位,优化心电学反向解决方案.

关键词:
身体表面潜力映射测绘贪的算法 贪的算法电心电图的反向问题过早的心室收缩 过早的心室收缩转移矩阵是一个转移矩阵.

更多相关视频

Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

11.5K
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

309

相关实验视频

Last Updated: Jul 15, 2025

In Silico Clinical Trials for Cardiovascular Disease
09:09

In Silico Clinical Trials for Cardiovascular Disease

Published on: May 27, 2022

1.8K
Cardiac Magnetic Resonance Imaging at 7 Tesla
09:14

Cardiac Magnetic Resonance Imaging at 7 Tesla

Published on: January 6, 2019

11.5K
Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph
05:32

Retrospective Cardiac Gating with A Prototype Small-Animal X-ray Computed Tomograph

Published on: February 21, 2025

309

科学领域:

  • 生物医学工程 生物医学工程
  • 心血管电生理学 心血管电生理学
  • 计算医学是一种计算医学.

背景情况:

  • 心电图的反向问题旨在使用干电位记录来非侵入性地定位心脏电源.
  • 对于准确的逆向解决方案,特别是对于早发性心室收缩 (PVCs) 的最佳电极配置仍然是一个公开的挑战.

研究的目的:

  • 调查个体干电极对于心脏源的患者特异反向解决方案的意义.
  • 评估使用较少,高度显著的电极子集对PVC原产地定位的准确性的影响.

主要方法:

  • 在13名患有PVC的患者中,对来自128个电极的身体表面电位数据进行了两步逆向溶液的应用.
  • 一个贪的算法根据转移矩阵的奇数值确定了电极的意义.
  • 定位误差 (LE) 是通过使用减少 (32,64) 和全 (128) 电极集来计算估计和地面真相PVC来源的比较.

主要成果:

  • 使用所有128个电极的平均LE为28.8±11.9毫米.
  • 减少的电极组 (32或64) 在不同的显著性标准中显示了可比的平均LE,从28.8毫米到32.6毫米不等.
  • 观察到电极显著性的患者间变化.

结论:

  • 精确定位单双极心源,如PVC,可以通过精心选择的电极子集来实现.
  • 针对患者的电极显著性分析可以优化心脏电活动的非侵入性局部化.