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相关概念视频

Beams with Unsymmetric Loadings01:17

Beams with Unsymmetric Loadings

390
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
390
Beams with Symmetric Loadings01:15

Beams with Symmetric Loadings

377
The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...
377
Shearing Stresses in a Beam: Problem Solving01:14

Shearing Stresses in a Beam: Problem Solving

597
A cantilever beam with a rectangular cross-section under distributed and point loads experiences shearing stresses. The analysis begins by identifying the loads acting on the beam. Then, the reactions at the beam's fixed end are calculated using equilibrium equations. The vertical reaction is a combination of the distributed and point loads, while the moment reaction is the sum of their moments. The shear force distribution along the beam, resulting from these loads, is established by creating...
597
Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

428
In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
428
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

1.1K
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
1.1K
Maximum Power Transfer01:16

Maximum Power Transfer

811
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
811

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相关实验视频

Updated: Jan 11, 2026

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
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在复杂的城市环境中,针对ISAC-enabled RSU系统的层次束形优化.

Zhiyuan You1, Na Lv2, Guimei Zheng3

  • 1The Graduate School, Air Force Engineering University, Xi'an 710038, China.

Sensors (Basel, Switzerland)
|November 13, 2025
PubMed
概括

本研究介绍了集成传感和通信 (ISAC) 系统的层次束形状方法,以平衡传感精度和通信可靠性. 这种新的方法优化了复杂的城市环境中的传感和通信性能.

关键词:
梁成型 梁成型 梁成型 梁成型层次化的优化优化.集成传感和通信系统.多用户干扰的干扰.半确定的计划半确定的计划.

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Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
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相关实验视频

Last Updated: Jan 11, 2026

Author Spotlight: Introduction to Active Probe Atomic Force Microscopy with Quattro-Parallel Cantilever Arrays
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科学领域:

  • 电气工程 电气工程
  • 计算机科学 计算机科学
  • 信号处理 信号处理

背景情况:

  • 综合传感和通信 (ISAC) 系统在城市环境中面临传感和通信之间的性能权衡.
  • 传统的优化方法在联合传感-通信问题上与局部最佳和次优结果作斗争.
  • 现有的解决方案往往无法有效平衡ISAC中相互矛盾的目标.

研究的目的:

  • 为支持ISAC的路边装置 (RSU) 提出一种新的层次束形优化解决方案.
  • 解决复杂的城市环境中目标传感和多用户通信之间的性能权衡问题.
  • 共同优化通信SINR和传感SCNR,以提高准确性和可靠性.

主要方法:

  • 将联合传感-通讯问题分解为两级"领导者-追随者"等级结构.
  • 在领导层中使用最大-最小策略与两截式方法来解决通信束成形.
  • 在追随层中利用半定义编程 (SDP) 来最大限度地传感SCNR,并结合了时空资源隔离.

主要成果:

  • 层次优化有效地平衡了通信SINR和感知SCNR.
  • 拟议的方法表明,传感精度和通信可靠性同时得到改善.
  • 模拟结果验证了联合优化战略的有效性.

结论:

  • 层次式光束成形方法为城市环境中的ISAC系统提供了可行的解决方案.
  • 这种方法有效地减轻了传感和通信性能之间的固有权衡.
  • 拟议的技术提高了ISAC支持的RSU的传感能力和通信可靠性.