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Elastic Curve from the Load Distribution

Elastic Curve from the Load Distribution

The structural behavior of beams under distributed loads is critical for engineering analysis, which focuses on predicting how beams bend and react under such conditions. Different types of beams (e.g., cantilever, supported, or overhanging) behave differently under distributed load conditions.
For all beams, the analysis of the beam's reaction to distributed loads begins by understanding the relationship between a beam's load and the resulting shear forces and bending moments. Initially, this...

Short-distance Transport of Resources

Short-distance Transport of Resources

Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.

Elasticity

Elasticity

Elasticity is the ability of an object to withstand the effects of distortion and to return to its original size and shape once the forces causing deformation are removed. When an elastic material deforms under the action of an external force, it experiences internal resistance to the deformation. However, if no external force is applied, it returns to its original state.
The elasticity of an object can be described by a stress-strain curve, which represents the relationship between stress...

Elasticity in Concrete

Elasticity in Concrete

Upon subjecting concrete to moderate or high uniaxial compressive or tensile stresses, the strain response is non-linear relative to the stress applied. As the stress is removed, the resulting stress-strain curve deviates from the original path traced during loading, creating a hysteresis loop, indicative of the concrete's non-linear and non-elastic properties. Typically, a material's modulus of elasticity, which is a measure of the material's stiffness, is inferred from the linear...

Dynamic Modulus of Elasticity of Concrete

Dynamic Modulus of Elasticity of Concrete

The dynamic modulus of elasticity assesses how a concrete structure deforms under impact or dynamic loads. It is typically higher than the static modulus of elasticity, measured under slow, steady loading conditions.
The sonic test is a common method to determine the dynamic modulus. In this test, a concrete beam, sized either 6 x 6 x 30 inches or 4 x 4 x 20 inches, is clamped at its center. Vibrations are initiated at one end of the beam by an electromagnetic exciter unit powered by a...

Distributed Loads

Distributed Loads

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...

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Related Experiment Video

Updated: Mar 17, 2026

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Dynamic optical resource allocation for mobile core networks with software defined elastic optical networking.

Yongli Zhao, Zhendong Chen, Jie Zhang

|July 28, 2016

Summary

This summary is machine-generated.

Software-defined optical networking (SDON) addresses 5G mobile core network challenges. A novel architecture with an optical switch load balancing (OSLB) algorithm improves resource allocation and network performance.

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Quasi-light Storage for Optical Data Packets

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Published on: February 6, 2014

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Area of Science:

Telecommunications Engineering
Computer Networking
Optical Networks

Background:

5G mobile communications necessitate higher data rates and reliable connections.
Evolved Packet Core (EPC) faces challenges in meeting user and operator demands for performance and cost-efficiency.
Software-Defined Optical Networking (SDON) offers dynamic resource allocation capabilities.

Purpose of the Study:

To propose a novel mobile core network architecture based on SDON.
To design a Software-Defined Network (SDN) controller for coordinated control of EPC entities.
To introduce and evaluate an Optical Switch Load Balancing (OSLB) algorithm for resource allocation.

Main Methods:

Development of a novel SDON-based mobile core network architecture.
Design of an SDN controller for integrated network management.
Proposal and analysis of the EPC-lightpath (EPCL) requirement.
Implementation and demonstration on an SDON-based EPC testbed using extended OpenFlow.
Simulation-based evaluation of the OSLB algorithm against LLB and MinHops.

Main Results:

Demonstration of EPCL establishment and adjustment on the SDON-based EPC testbed.
Simulation results show OSLB algorithm's effectiveness in bandwidth blocking ratio, traffic load distribution, and resource utilization.
The proposed SDON architecture and OSLB algorithm show significant improvements compared to traditional methods.

Conclusions:

The proposed SDON-based architecture effectively addresses the challenges in 5G mobile core networks.
The OSLB algorithm provides efficient resource allocation in the optical layer for EPC networks.
This approach enhances network performance, reliability, and operational cost-efficiency for mobile operators.