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相关概念视频

State Space Representation01:27

State Space Representation

228
The frequency-domain technique, commonly used in analyzing and designing feedback control systems, is effective for linear, time-invariant systems. However, it falls short when dealing with nonlinear, time-varying, and multiple-input multiple-output systems. The time-domain or state-space approach addresses these limitations by utilizing state variables to construct simultaneous, first-order differential equations, known as state equations, for an nth-order system.
Consider an RLC circuit, a...
228
Curvilinear Motion: Rectangular Components01:23

Curvilinear Motion: Rectangular Components

480
Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
As the car advances, its position evolves over time. Quantifying the car's velocity involves computing the...
480
Convolution: Math, Graphics, and Discrete Signals01:24

Convolution: Math, Graphics, and Discrete Signals

282
In any LTI (Linear Time-Invariant) system, the convolution of two signals is denoted using a convolution operator, assuming all initial conditions are zero. The convolution integral can be divided into two parts: the zero-input or natural response and the zero-state or forced response, with t0 indicating the initial time.
To simplify the convolution integral, it is assumed that both the input signal and impulse response are zero for negative time values. The graphical convolution process...
282
Curve Equations01:17

Curve Equations

49
Curves are essential geometric elements characterized by tangent distance, chord length, middle ordinate, and total arc length. These measurements are crucial in understanding a curve's geometric and spatial properties and are defined by the relationship between its radius and its central angle.The tangent distance (T) refers to the straight-line measurement from the intersection point of two tangents to either the start or end of the curve. This distance is influenced by the curve's radius (R)...
49
Graphical and Analytic Representation of Sinusoids01:20

Graphical and Analytic Representation of Sinusoids

419
Analyzing two sinusoidal voltages with equal amplitude and period but different phases on an oscilloscope, an instrument used to display and analyze waveforms, involves a three-step process.
The first step is measuring the peak-to-peak value, which is twice the amplitude of the sinusoid. This provides information about the maximum voltage swing of the waveform.
Secondly, the period and angular frequency are determined. The period is the time taken for one complete cycle of the waveform, while...
419
Curvilinear Motion: Normal and Tangential Components01:27

Curvilinear Motion: Normal and Tangential Components

417
When a car traverses a curved road, its motion can be elucidated by breaking it down into tangential and normal components. The car-centric coordinates attached to the vehicle move with it.
The positive direction of the t-axis aligns with the increasing position of the car along the curved path, denoted by the unit vector ut. Simultaneously, the n-axis, perpendicular to the t-axis, dissects the curved path into differential arc segments, each forming the arc of a circle with a radius of...
417

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相关实验视频

Updated: Jul 16, 2025

Inherent Dynamics Visualizer, an Interactive Application for Evaluating and Visualizing Outputs from a Gene Regulatory Network Inference Pipeline
10:44

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一个离散变量局部对话式表示的圆交叉动力学.

Bing Gu1,2

  • 1Department of Chemistry & Department of Physics, Westlake University, Hangzhou, Zhejiang 310030, China.

Journal of chemical theory and computation
|September 22, 2023
PubMed
概括

这项研究引入了一种新的糖尿病表示,以准确地模拟形交叉点 (CI) 的分子动力学. 这种新的方法避免了奇点,使光化学和光物理学的强大的模拟成为可能.

科学领域:

  • 量子化学是一种量子化学.
  • 分子动力学分子动力学
  • 摄影化学的使用.

背景情况:

  • 圆交点 (CI) 在分子光化学和光物理学中至关重要.
  • 模拟CI动态具有挑战性,因为在亚亚巴特表示中衍生合的分歧.

研究的目的:

  • 通过CI引入一种新型的糖尿病表示,用于通过CI准确的电子-核波包动态.
  • 为初始CI动态开发一个无奇点的计算框架.

主要方法:

  • 采用亚底波电子状态,同时避免单一衍生合.
  • 使用离散变量表示核坐标.
  • 通过电子重叠矩阵计算非adiabatic效应.

主要成果:

  • 新的糖尿病表示是强大的,避免了尺度依赖的奇点.
  • 成功捕获电子过渡,连贯性和几何相位.
  • 展示了对双模圆交叉模型的准确模拟.

结论:

  • 开发的糖尿病表征为初始CI动态提供了一个无奇点的方法.
  • 这种方法增强了光化学和光物理过程的建模.

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  • 为研究复杂的分子系统提供了强大的框架.