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Related Concept Videos

Sequence Networks of Rotating Machines01:24

Sequence Networks of Rotating Machines

A Y-connected synchronous generator, grounded through a neutral impedance, is designed to produce balanced internal phase voltages with only positive-sequence components. The generator's sequence networks include a source voltage that is exclusively in the positive-sequence network. The sequence components of line-to-ground voltages at the generator terminals illustrate this configuration.
Zero-sequence current induces a voltage drop across the generator's neutral impedance and other...
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Hierarchy of Motor Control

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Combinatorial Gene Control02:33

Combinatorial Gene Control

Combinatorial gene control is the synergistic action of several transcriptional factors to regulate the expression of a single gene. The absence of one or more of these factors may lead to a significant difference in the level of gene expression or repression.
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Coordination of Gene Expression Processes in Bacteria01:29

Coordination of Gene Expression Processes in Bacteria

The DNA replication, transcription, and translation processes are intricately coupled in bacteria, allowing efficient gene expression and rapid protein synthesis. While this physical and functional coordination is advantageous, it introduces challenges that bacteria overcome through specific regulatory mechanisms.Coupling of Replication, Transcription, and TranslationThe coupling of replication, transcription, and translation is a hallmark of bacterial gene expression. As the replisome unwinds...
Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the addition of a...
Cooperative Binding of Transcription Regulators02:13

Cooperative Binding of Transcription Regulators

Transcriptional regulators bind to specific cis-regulatory sequences in the DNA to regulate gene transcription. These cis-regulatory sequences are very short, usually less than ten nucleotide pairs in length. The short length means that there is a high probability of the exact same sequence randomly occurring throughout the genome.  Since regulators can also bind to groups of similar sequences, this further increases the chances of random binding. Transcriptional regulators form dimers that...

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Related Experiment Video

Updated: May 25, 2026

The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy
11:53

The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy

Published on: October 14, 2017

A hierarchical gene regulatory network for adaptive multirobot pattern formation.

Yaochu Jin1, Hongliang Guo, Yan Meng

  • 1Department of Computing, University of Surrey, Guildford, Surrey, UK. yaochu.jin@surrey.ac.uk

IEEE Transactions on Systems, Man, and Cybernetics. Part B, Cybernetics : a Publication of the IEEE Systems, Man, and Cybernetics Society
|February 8, 2012
PubMed
Summary

This study introduces a hierarchical gene regulatory network (H-GRN) enabling multirobot systems to adapt pattern formation in dynamic environments using only local perception. The H-GRN model ensures adaptive pattern generation and decentralized control for robust performance.

Related Experiment Videos

Last Updated: May 25, 2026

The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy
11:53

The Modular Design and Production of an Intelligent Robot Based on a Closed-Loop Control Strategy

Published on: October 14, 2017

Area of Science:

  • Robotics
  • Artificial Intelligence
  • Computational Biology

Background:

  • Existing multirobot pattern formation systems lack adaptability in dynamic environments.
  • Adaptation in current systems often requires global information, which is impractical for robots with local perception.

Purpose of the Study:

  • To propose a novel hierarchical gene regulatory network (H-GRN) for adaptive multirobot pattern generation and formation.
  • To enable multirobot systems to dynamically adjust patterns based on environmental changes using local perception.

Main Methods:

  • A two-layer gene regulatory network (GRN) architecture was developed.
  • The first layer handles adaptive pattern generation, optimized via an evolutionary algorithm.
  • The second layer provides decentralized control for robot movement towards the generated pattern.

Main Results:

  • Simulations confirmed the H-GRN's effectiveness in forming desired patterns within changing environments.
  • The model demonstrated robustness against individual robot failures.
  • Proof-of-concept experiments with e-puck robots validated the H-GRN's feasibility.

Conclusions:

  • The H-GRN provides an effective solution for adaptive multirobot pattern formation in dynamic settings.
  • The proposed model enhances system robustness and adaptability through a decentralized, locally-perceptive approach.