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相关概念视频

State Space to Transfer Function01:21

State Space to Transfer Function

188
The conversion of state-space representation to a transfer function is a fundamental process in system analysis. It provides a method for transitioning from a time-domain description to a frequency-domain representation, which is crucial for simplifying the analysis and design of control systems.
The transformation process begins with the state-space representation, characterized by the state equation and the output equation. These equations are typically represented as:
188
UV–Vis Spectroscopy: Woodward–Fieser Rules01:29

UV–Vis Spectroscopy: Woodward–Fieser Rules

24.0K
UV–Visible absorption spectra of conjugated dienes arise from the lowest energy π → π* transitions. The light-absorbing part of the molecule is called the chromophore, and the substituents directly attached to the chromophore are called auxochromes. A strong correlation exists between the absorption maxima, λmax, and the structure of a conjugated π system. The Woodward–Fieser rules predict the value of λmax for a given...
24.0K
Cumulative Frequency Distribution01:04

Cumulative Frequency Distribution

6.8K
A cumulative frequency distribution is another type of frequency distribution. Instead of reporting how many data values fall in some classes, it reports how many data values are contained in either that class or any class to its left. Technically, it means the sum of frequencies of the class and all the classes below it in a frequency distribution. A cumulative frequency is calculated by adding the frequency of each class lower than the corresponding class interval or category. In general, a...
6.8K
Vector Representation of Complex Numbers01:16

Vector Representation of Complex Numbers

117
Complex numbers, represented in Cartesian coordinates, can also be visualized as vectors. These vectors can be expressed in polar form, emphasizing their magnitude and angle. When a complex number is input into a function, the output is another complex number, highlighting the function's zero point from which the vector representation can originate.
Consider a function defined as the product of the complex factors in the numerator divided by the product of the complex factors in the...
117
Transfer Function to State Space01:23

Transfer Function to State Space

211
State-space representation is a powerful tool for simulating physical systems on digital computers, necessitating the conversion of the transfer function into state-space form. Consider an nth-order linear differential equation with constant coefficients, like those encountered in an RLC circuit. The state variables are selected as the output and its n−1 derivatives. Differentiating these variables and substituting them back into the original equation produces the state equations.
In an...
211
Estimation of the Physical Quantities01:05

Estimation of the Physical Quantities

4.2K
On many occasions, physicists, other scientists, and engineers need to make estimates of a particular quantity. These are sometimes referred to as guesstimates, order-of-magnitude approximations, back-of-the-envelope calculations, or Fermi calculations. The physicist Enrico Fermi was famous for his ability to estimate various kinds of data with surprising precision. Estimating does not mean guessing a number or a formula at random. Instead, estimation means using prior experience and sound...
4.2K

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相关实验视频

Updated: Jun 16, 2025

Creating Objects and Object Categories for Studying Perception and Perceptual Learning
14:38

Creating Objects and Object Categories for Studying Perception and Perceptual Learning

Published on: November 2, 2012

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对于模糊集映射的概括价格方程.

Matthias Borgstede1

  • 1University of Bamberg, Markusplatz 3, 96047, Bamberg, Germany. matthias.borgstede@uni-bamberg.de.

Theory in biosciences = Theorie in den Biowissenschaften
|May 30, 2025
PubMed
概括

这项研究引入了价格方程的新模糊集公式. 这增强了方程,涵盖了传统的父母-子女关系之外的多样化的选择过程.

科学领域:

  • 进化生物学 进化生物学
  • 数学建模的数学建模
  • 系统理论 系统理论

背景情况:

  • 价格方程是理解选择过程的基本工具.
  • 它传统上依赖于严格的父子代映射.
  • 这限制了它在关系不那么明确的系统中的应用.

研究的目的:

  • 用模糊的集合理论开发一个通用的价格方程.
  • 将价格方程的适用性扩展到具有不精确关系的系统.
  • 统一各种选择机制的研究.

主要方法:

  • 使用模糊集映射来制定价格方程.
  • 开发一个广义的数学框架来进行选择.
  • 模糊逻辑应用于归属度和相关性的模型.

主要成果:

  • 介绍了一种基于模糊集的新型价格方程.
  • 一般化方程适用于不同程度的亲属关系和后代关系.
  • 在自然,文化,操作和物理选择系统中证明了适用性.

结论:

  • 模糊集公式显著扩大了价格方程的范围.
关键词:
文化选择 文化选择模糊的集合 模糊的集合自然选择是自然选择.操作人员选择选择操作员选择价格方程是一个价格方程.

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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

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相关实验视频

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Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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Creating Objects and Object Categories for Studying Perception and Perceptual Learning

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  • 这种统一的方法为各种选择现象提供了新的见解.
  • 为研究复杂系统提供灵活的数学框架.