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相关概念视频

Lattice Centering and Coordination Number02:33

Lattice Centering and Coordination Number

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The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell. The unit cell consists of lattice points that represent the locations of atoms or ions. The entire structure then consists of this unit cell repeating in three dimensions. The three different types of unit cells present in the cubic lattice are illustrated in Figure 1.
Types of Unit Cells
Imagine taking a large number of identical...
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Bewley Lattice Diagram01:12

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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Network Function of a Circuit01:25

Network Function of a Circuit

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Frequency response analysis in electrical circuits provides vital insights into a circuit's behavior as the frequency of the input signal changes. The transfer function, a mathematical tool, is instrumental in understanding this behavior. It defines the relationship between phasor output and input and comes in four types: voltage gain, current gain, transfer impedance, and transfer admittance. The critical components of the transfer function are the poles and zeros.
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Singularity Functions for Shear01:26

Singularity Functions for Shear

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In structural analysis, singularity functions are crucial in simplifying the representation of shear forces in beams under discontinuous loading. These functions describe discontinuous  variations in shear force across a beam with varying loads by using a single mathematical expression, regardless of the complexity of the loading conditions. The singularity functions are derived from creating a free-body diagram of the beam and then making conceptual cuts at specific points to examine the...
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Poisson's And Laplace's Equation01:25

Poisson's And Laplace's Equation

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The electric potential of the system can be calculated by relating it to the electric charge densities that give rise to the electric potential. The differential form of Gauss's law expresses the electric field's divergence in terms of the electric charge density.
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Non-ohmic Devices00:51

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In most substances, the current flow is proportional to the voltage applied to it. A simple relationship between the values of current, voltage, and resistance is known as Ohm's law. Nonohmic devices do not exhibit a linear relationship between voltage and current. One such device is the semiconducting circuit element known as a diode. A diode is a circuit device that allows current flow in only one direction.
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相关实验视频

Updated: Jul 12, 2025

Integration of 5G Experimentation Infrastructures into a Multi-Site NFV Ecosystem
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L-CPPA:基于格子的有条件隐私保护认证方案,用于5G启用车辆系统的雾计算.

Abdulwahab Ali Almazroi1, Mohammed A Alqarni2, Mahmood A Al-Shareeda3

  • 1Department of Information Technology, College of Computing and Information Technology at Khulais, University of Jeddah, Jeddah, Saudi Arabia.

PloS one
|October 27, 2023
PubMed
概括

本研究介绍了L-CPPA计划,以提高5G支持的车辆雾计算对量子威胁的安全性. 它改进了条件隐私保护身份验证,以实现更安全的流量管理.

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科学领域:

  • 网络安全 网络安全
  • 电信工程 电信工程 电信工程
  • 计算机科学 计算机科学

背景情况:

  • 利用第五代 (5G) 网络的车辆雾计算 (VFC) 提供了提高交通管理和驾驶员安全的巨大潜力.
  • 车辆中的无线通信引发了关键的机密性和安全问题,使得有条件的隐私保护身份验证 (CPPA) 是必不可少的.
  • 现有的CPPA系统容易受到量子计算攻击,因此需要先进的安全解决方案.

研究的目的:

  • 提出一个新的安全方案,L-CPPA,旨在解决目前的CPPA方法在5G支持的车辆雾计算环境中的漏洞.
  • 在基于5G的车辆系统中增强安全和反盗版功能,特别是针对新出现的量子威胁.

主要方法:

  • 该L-CPPA方案使用雾服务器通过5G基站 (5G-BS) 生成和分发注册车辆的秘密密钥.
  • 每辆车的主机密数据由可信的权威机构存储在雾服务器上,而不是车辆的车载单元 (OBU).

主要成果:

  • 拟议的L-CPPA系统显示了特定的计算成本: 694.161 ms用于消息签名, 60.118 ms用于单次验证, 1348.218 ms用于批量验证.
  • 与L-CPPA系统相关的通信成本为7757字节.

结论:

  • 该L-CPPA方案提供了一个强大的解决方案,用于5G支持的车辆雾计算中的条件隐私保护认证,解决量子计算威胁.
  • 拟议的方法通过安全管理秘密主数据和优化密钥分配来提高车辆系统的安全性.