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Related Concept Videos

Distributed Loads01:19

Distributed Loads

493
Distributed loads are a common type of load that engineers and scientists encounter in various practical situations. Distributed loads often refer to a type of load spread over a surface or a structure and can be modeled as continuous force per unit area.
For example, consider a bookshelf filled with books stacked vertically adjacent to each other. The weight of the books is evenly distributed over the length of the shelf. As a result, the pressure at different locations on the surface of the...
493
Maximum Power Flow and Line Loadability01:23

Maximum Power Flow and Line Loadability

92
The maximum power flow for lossy transmission lines is derived using ABCD parameters in phasor form. These parameters create a matrix relationship between the sending-end and receiving-end voltages and currents, allowing the determination of the receiving-end current. This relationship facilitates calculating the complex power delivered to the receiving end, from which real and reactive power components are derived.
92
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

152
The fast decoupled power flow method addresses contingencies in power system operations, such as generator outages or transmission line failures. This method provides quick power flow solutions, essential for real-time system adjustments. Fast decoupled power flow algorithms simplify the Jacobian matrix by neglecting certain elements, leading to two sets of decoupled equations:
152
Cable Subjected to a Distributed Load01:24

Cable Subjected to a Distributed Load

614
The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.
614
The Delta-to-Delta Circuit01:17

The Delta-to-Delta Circuit

525
In a delta-delta configuration, the source and the load are connected in a delta manner, forming a closed loop that divides the network into three distinct phases. This configuration makes the phase voltages identical to line voltages. Assuming the sources are in positive sequence, the phase voltages can be expressed directly without having a neutral wire.
525
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

611
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...
611

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Cross-Domain Communication Method Based on Load Balancing for SDNs.

Xiaomao Wang1, Yi Zhou1, Feng Dan1

  • 1Engineering Research Center for Metallurgical Automation and Measurement Technology of Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China.

Sensors (Basel, Switzerland)
|February 26, 2025
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Summary
This summary is machine-generated.

This study introduces a novel approach for optimizing network path planning in multi-domain Software-Defined Networking (SDN) environments. The method enhances path allocation success rates and network load balancing, reducing data transmission delays.

Keywords:
cross-domainload balancingpath selectionsoftware defined networking (SDN)

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Area of Science:

  • Computer Science
  • Network Engineering
  • Distributed Systems

Background:

  • Limited bandwidth and suboptimal path planning in multi-domain networks cause congestion and load imbalance.
  • Existing control planes struggle to meet path request requirements due to insufficient consideration of network resource states.

Purpose of the Study:

  • To develop an optimized path planning strategy for multi-domain Software-Defined Networking (SDN) environments.
  • To improve network load balancing and maximize data plane requirement satisfaction.
  • To address challenges of limited bandwidth and localized congestion in cross-domain communication.

Main Methods:

  • Derived a cross-domain communication load balancing objective function based on network modeling.
  • Employed collaborative processing among multi-domain controllers for coordinated path planning and flow table installation.
  • Transformed the path planning problem into a clique-finding problem and provided a heuristic approximate solution.

Main Results:

  • The proposed scheme significantly outperforms traditional methods in path allocation success rate.
  • Demonstrated superior network load balancing degree compared to conventional approaches.
  • Achieved reduced data transmission delays, particularly under high-density path requests in SDN networks.

Conclusions:

  • The collaborative multi-controller approach effectively coordinates cross-domain path planning and flow table installation.
  • The heuristic solution provides an efficient method for complex cross-domain path planning.
  • The findings highlight the effectiveness of considering multiple network resource states for optimal path selection and load balancing.