Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Cable Subjected to a Distributed Load01:24

Cable Subjected to a Distributed Load

772
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.
772
Distributed Loads01:19

Distributed Loads

576
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...
576
Parallel Processing01:20

Parallel Processing

199
The brain processes sensory information rapidly due to parallel processing, which involves sending data across multiple neural pathways at the same time. This method allows the brain to manage various sensory qualities, such as shapes, colors, movements, and locations, all concurrently. For instance, when observing a forest landscape, the brain simultaneously processes the movement of leaves, the shapes of trees, the depth between them, and the various shades of green. This enables a quick and...
199
Fast Decoupled and DC Powerflow01:24

Fast Decoupled and DC Powerflow

256
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:
256
Rapidly Varying Flow01:24

Rapidly Varying Flow

119
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
119
Buffers: Buffer Capacity01:09

Buffers: Buffer Capacity

1.4K
Buffer capacity is the quantitative measure of a buffer to resist the change in pH. As shown in the following equation, the buffer capacity, denoted by 'beta', is expressed as the number of moles of acid or base needed to change the pH of a one-liter buffer solution by 1 unit. Here, Ca and Cb indicate the number of moles of acid and base, respectively. Note that dpH represents the change in pH.
In the graph, pH is plotted as a function of the number of moles of base (Cb) added to a weak...
1.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Cache-Aided General Linear Function Retrieval.

Entropy (Basel, Switzerland)·2020
Same author

On the need for adaptive learning in on-demand Deep Brain Stimulation for Movement Disorders.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2018
Same author

Who May Benefit From On-Demand Control of Deep Brain Stimulation? Noninvasive Evaluation of Parkinson Patients.

Neuromodulation : journal of the International Neuromodulation Society·2018
Same author

Towards fully automated closed-loop Deep Brain Stimulation in Parkinson's disease patients: A LAMSTAR-based tremor predictor.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2016
Same author

Towards closed-loop deep brain stimulation: decision tree-based essential tremor patient's state classifier and tremor reappearance predictor.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2015
Same author

On modeling the neuronal activity in movement disorder patients by using the Ornstein Uhlenbeck process.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2015
Same journal

Research on a Regional Availability Evaluation Model for Road-Area High-Entropy Energy Based on Synergy Factors.

Entropy (Basel, Switzerland)·2026
Same journal

Atmospheric Turbulence Channel Modeling and Performance Analysis of a CO-ZP-OFDM Coherent Optical Communication System for UAV Air-to-Ground Scenarios.

Entropy (Basel, Switzerland)·2026
Same journal

Information Geometry and Asymptotic Theory for SMML Estimators.

Entropy (Basel, Switzerland)·2026
Same journal

Correlation Entropy and Power-Law Kinetics.

Entropy (Basel, Switzerland)·2026
Same journal

Research on the Contagion of Systemic Financial Risk Under the Impact of Climate Risks-From the Perspective of Complex Networks and Machine Learning.

Entropy (Basel, Switzerland)·2026
Same journal

The Statistical-Mechanical Meaning of the Wave Function of Quantum Mechanics.

Entropy (Basel, Switzerland)·2026
See all related articles

Related Experiment Video

Updated: Aug 13, 2025

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

10.9K

The Strongly Asynchronous Massive Access Channel.

Sara Shahi1, Daniela Tuninetti1, Natasha Devroye1

  • 1Electrical and Computer Engineering Department, University of Illinois at Chicago, Chicago, IL 60607, USA.

Entropy (Basel, Switzerland)
|January 21, 2023
PubMed
Summary
This summary is machine-generated.

Reliable communication is possible even with exponentially many users in a Strongly Asynchronous, Slotted, Discrete Memoryless, Massive Access Channel (SAS-DM-MAC). This study derives bounds for joint error probability, enabling exponential user growth at positive rates.

Keywords:
asynchronous communicationmassive accessmultiple access channels

More Related Videos

Continuous High-resolution Microscopic Observation of Replicative Aging in Budding Yeast
10:41

Continuous High-resolution Microscopic Observation of Replicative Aging in Budding Yeast

Published on: August 20, 2013

12.9K
Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection
08:01

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection

Published on: December 15, 2015

7.5K

Related Experiment Videos

Last Updated: Aug 13, 2025

Quasi-light Storage for Optical Data Packets
07:45

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

10.9K
Continuous High-resolution Microscopic Observation of Replicative Aging in Budding Yeast
10:41

Continuous High-resolution Microscopic Observation of Replicative Aging in Budding Yeast

Published on: August 20, 2013

12.9K
Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection
08:01

Tuning a Parallel Segmented Flow Column and Enabling Multiplexed Detection

Published on: December 15, 2015

7.5K

Area of Science:

  • Information Theory
  • Wireless Communications
  • Network Coding

Background:

  • The Strongly Asynchronous, Slotted, Discrete Memoryless, Massive Access Channel (SAS-DM-MAC) presents challenges due to a large, growing number of users and asynchronous access.
  • Existing models often struggle to accommodate exponentially increasing user numbers and asynchronous transmission parameters while maintaining reliability.

Purpose of the Study:

  • To investigate the fundamental limits of reliable communication in SAS-DM-MAC systems with exponentially growing parameters.
  • To establish achievable rates and converse bounds for SAS-DM-MAC under joint error probability constraints.
  • To determine the maximum possible growth rate of users in such systems.

Main Methods:

  • Derivation of achievability bounds for various channel scenarios (similar, polynomially diverse, unrestricted).
  • Development of a general converse bound on the capacity region.
  • Formulation of a converse bound on the maximum user growth rate.
  • Analysis under a joint probability of error constraint for accurate user and message identification.

Main Results:

  • Achievability of reliable transmission is demonstrated even with exponentially increasing numbers of users and asynchronous window lengths.
  • Performance bounds are established for different user channel distributions.
  • A fundamental limit on the growth rate of users in SAS-DM-MAC is derived.
  • Strictly positive transmission rates are shown to be feasible under the specified conditions.

Conclusions:

  • Exponential scaling of users and asynchronous parameters is possible in SAS-DM-MAC while maintaining reliable communication.
  • The derived bounds provide crucial insights into the capacity and operational limits of massive asynchronous wireless systems.
  • This work paves the way for designing more efficient massive access communication systems.