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

Lossy Lines and Overvoltages01:22

Lossy Lines and Overvoltages

82
Transmission-line series resistance and shunt conductance cause three primary effects: attenuation, distortion, and power losses.
Attenuation
When constant series resistance and shunt conductance are present, voltage and current equations are modified. The propagation constant indicates that voltage and current waves consist of both forward and backward traveling components. These waves attenuate as they propagate, with the attenuation factor related to the resistance and conductance. In a...
82
Traveling Waves: Lossless Lines01:27

Traveling Waves: Lossless Lines

121
The provided content explores the behavior of traveling waves on single-phase lossless transmission lines. It begins with a single-phase two-wire lossless transmission line of length Δx, characterized by a loop inductance LH/m and a line-to-line capacitance C F/m. These parameters result in a series inductance LΔx  and a shunt capacitance CΔx.
121
Boundary Conditions: Lossless Lines01:21

Boundary Conditions: Lossless Lines

83
Consider a single-phase, two-wire, lossless transmission line terminated by an impedance at the receiving end and a source with Thevenin voltage and impedance at the sending end. The line, with length, has a surge impedance and wave velocity determined by the line's inductance and capacitance.
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
83
Reconstruction of Signal using Interpolation01:10

Reconstruction of Signal using Interpolation

173
Signal processing techniques are essential for accurately converting continuous signals to digital formats and vice versa. When a continuous signal is sampled with a period T, the resulting sampled signal exhibits replicas of the original spectrum in the frequency domain, spaced at intervals equal to the sampling frequency. To handle this sampled signal, a zero-order hold method can be applied, which creates a piecewise constant signal by retaining each sample's value until the next...
173
Downsampling01:20

Downsampling

130
When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
130
Adjusting a Traverse01:12

Adjusting a Traverse

48
In the site survey of a four-sided traverse, internal angles are essential to ensure geometric accuracy. The survey revealed that the sum of the measured internal angles was 359 degrees and 48 minutes, which is 12 minutes less than the expected 360 degrees. This discrepancy signals an error likely arising from measurement inaccuracies during the fieldwork.To rectify this error, the adjustment process involved distributing the 12-minute shortfall equally across the four internal angles. By...
48

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

Denjoy's anachronistic topological viewpoint on Aubry transition.

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

Microscopic properties of the pinwheel kagome compound Rb(2)Cu(3)SnF(12).

Physical review letters·2014
Same author

Non-resonant and non-enhanced Raman correlation spectroscopy.

Optics express·2013
Same author

Possible quantum diffusion of polaronic muons in Dy(2)Ti(2)O(7) spin ice.

Physical review letters·2012
Same author

Generation and control of hot spots on commensurate metallic gratings.

Optics express·2009
Same author

Why metallic surfaces with grooves a few nanometers deep and wide may strongly absorb visible light.

Physical review letters·2008

相关实验视频

Updated: Jun 7, 2025

Evaluation of Auditory Brainstem Response in Chicken Hatchlings
09:32

Evaluation of Auditory Brainstem Response in Chicken Hatchlings

Published on: April 1, 2022

3.0K

奥布里过渡带有小扭曲.

O Cépas1, P Quémerais1

  • 1<a href="https://ror.org/04dbzz632">Institut Néel</a>, CNRS, Université Grenoble Alpes, Grenoble 38000, France.

Physical review. E
|November 20, 2024
PubMed
概括

扭曲结构中的奥布里过渡可以在小扭曲的情况下发生,这与Frenkel-Kontorova模型相反. 修改潜在的非线性允许这种过渡,解释充电密度波中的固定相.

科学领域:

  • 凝聚物质物理学 凝聚物质物理学
  • 材料科学 材料科学 材料科学

背景情况:

  • 奥布里过渡描述了不相称的扭曲系统中的结构阶段过渡.
  • 标准的Frenkel-Kontorova模型表明,这种过渡需要很大的扭曲幅度.

研究的目的:

  • 调查奥布里过渡在不相称扭曲结构中发生的条件.
  • 将理论模型与电荷密度波中固定相的实验观测相结合起来.

主要方法:

  • 改变潜在形状以增加局部机械力 (非线性).
  • 分析导致的扭曲幅度和光谱特性 (音声和相声) 的变化.

主要成果:

  • 当潜在的非线性增加时,奥布里过渡可以发生在小的扭曲幅度上.
  • 过渡期间会出现一个阶段间隙.
  • 在更高的能量下,语音频谱仍然与未扭曲的系统相似.

结论:

  • 弗伦克尔-康托罗娃模型对大扭曲幅度的预测并不普遍适用.
  • 增加的潜在非线性为小幅度的奥布里过渡提供了一个机制.
  • 这个模型解释了实验观察到的带有最小扭曲的电荷密度波的固定相.

更多相关视频

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

2.5K
Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R
06:01

Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R

Published on: December 9, 2022

2.5K

相关实验视频

Last Updated: Jun 7, 2025

Evaluation of Auditory Brainstem Response in Chicken Hatchlings
09:32

Evaluation of Auditory Brainstem Response in Chicken Hatchlings

Published on: April 1, 2022

3.0K
The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
09:51

The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve

Published on: September 7, 2022

2.5K
Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R
06:01

Semi-Automated Analysis of Peak Amplitude and Latency for Auditory Brainstem Response Waveforms Using R

Published on: December 9, 2022

2.5K