相关概念视频
Routh-Hurwitz Criterion II
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In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
226
Cartesian Vector Notation
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Cartesian vector notation is a valuable tool in mechanical engineering for representing vectors in three-dimensional space, performing vector operations such as determining the gradient, divergence, and curl, and expressing physical quantities such as the displacement, velocity, acceleration, and force. By using Cartesian vector notation, engineers can more easily analyze and solve problems in various areas of mechanical engineering, including dynamics, kinematics, and fluid mechanics. This...
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Bewley Lattice Diagram
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The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.
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Vector Representation of Complex Numbers
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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...
Consider a function defined as the product of the complex factors in the numerator divided by the product of the complex factors in the...
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Inverse z-Transform by Partial Fraction Expansion
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The inverse z-transform is a crucial technique for converting a function from its z-domain representation back to the time domain. One effective method for finding the inverse z-transform is the Partial Fraction Method, which involves decomposing a function into simpler fractions with distinct coefficients. These fractions correspond to known z-transform pairs, facilitating the inverse transformation process.
To begin the process, the poles of the function are identified and the function is...
To begin the process, the poles of the function are identified and the function is...
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Design Example: Capacitance Multiplier Circuit
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In integrated circuit technology, a capacitance multiplier is often utilized to produce a larger capacitance value when a small physical capacitance falls short. This is achieved by a circuit that multiplies capacitance values by a factor of up to 1000, such that a 10-pF capacitor can replicate the performance of a 100-nF capacitor.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
The circuit illustrated in Figure 1 below incorporates two op-amps, with the first operating as a voltage follower and the second acting as an inverting amplifier.
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最佳四分期的赫米蒂安液晶显示器代码
Liangdong Lu1, Ruihu Li1, Yuezhen Ren1
1Fundamentals Department, Air Force Engineering University, Xi'an 710051, China.
Entropy (Basel, Switzerland)
|May 24, 2024
概括
这项研究提出了四元体赫密特线性互补双 (LCD) 代码的新表. 这些代码对于加强加密系统对侧通道攻击的安全性非常有价值.
科学领域:
- 编码理论编码理论
- 密码学 密码学 密码学 密码学
- 信息安全 信息安全
背景情况:
- 线性互补双 (LCD) 代码是线性代码的一个类.
- 液晶显示器代码越来越多地被认为是对抗嵌入式加密系统的侧通道攻击.
研究的目的:
- 为了呈现好的四分制赫米蒂安液晶屏代码的表格.
- 在构建新类型的代码 (打孔,缩短,组合) 中使用这些代码.
- 在特定范围内识别最佳和近最佳代码.
主要方法:
- 系统地生成和分类四级赫米蒂安液晶码的表格.
- 对代码属性的分析,包括最佳性和边界坚持.
- 代码构建技术的应用.
主要成果:
- 提供了三张表,其中包括最知名的四级赫米蒂安液晶显示器代码,长度为n≤25.
- 许多提出的代码都是最佳或接近最佳的,达到或接近理论界限.
- 在构建高级代码类型方面证明了实用性.
结论:
- 提出的代码在LCD代码领域提供了显著的进步.


