scholarly journals Swarming, swirling and stasis in sequestered bristle-bots

2013 ◽  
Vol 469 (2151) ◽  
pp. 20120637 ◽  
Author(s):  
L. Giomi ◽  
N. Hawley-Weld ◽  
L. Mahadevan
Keyword(s):  
Cell Phone ◽  
Autonomous Agents ◽  
Collective Motion ◽  
Relative Magnitude ◽  
Single Parameter ◽  
Local Interactions ◽  
Substrate Topography ◽  
Space And Time ◽  
Behavioural Repertoire

The collective ability of organisms to move coherently in space and time is ubiquitous in any group of autonomous agents that can move and sense each other and the environment. Here, we investigate the origin of collective motion and its loss using macroscopic self-propelled bristle-bots, simple automata made from a toothbrush and powered by an onboard cell phone vibrator-motor, that can sense each other through shape-dependent local interactions, and can also sense the environment non-locally via the effects of confinement and substrate topography. We show that when bristle-bots are confined to a limited arena with a soft boundary, increasing the density drives a transition from a disordered and uncoordinated motion to organized collective motion either as a swirling cluster or a collective dynamical stasis. This transition is regulated by a single parameter, the relative magnitude of spinning and walking in a single automaton. We explain this using quantitative experiments and simulations that emphasize the role of the agent shape, environment and confinement via boundaries. Our study shows how the behavioural repertoire of these physically interacting automatons controlled by one parameter translates into the mechanical intelligence of swarms.

The Role of Belief in the Emergence of Social Conventions in Artificial Social System

2010 ◽  
Vol 159 ◽  
pp. 210-215
Author(s):  
Zheng You Xia ◽  
Chen Ling Gu
Keyword(s):  
Social System ◽  
Autonomous Agents ◽  
Multi Agent Systems ◽  
Local Interactions ◽  
Social Conventions ◽  
Agent Systems ◽  
Multi Agent ◽  
Global Agreement ◽  
Available Information

The emergence of social conventions in multi-agent systems has been analyzed mainly by considering a group of homogeneous autonomous agents that can reach a global agreement using locally available information. We use novel viewpoint to consider that the process through which agents coordinate their behaviors to reduce conflict is also the process agents use to evaluate trust relations with their neighbors during local interactions. In this paper, we propose using the belief update rule called Instances of Satisfying and Dissatisfying (ISD) to study the evolution of agents' beliefs during local interactions. We also define an action selection rule called “highest cumulative belief” (HCB) to coordinate their behavior to reduce conflicts among agents in MAS (multi-agent systems). We find that the HCB can cause a group of agents to achieve the emergence of social conventions. Furthermore, we discover that if a group of agents can achieve the emergence of social conventions through ISD and HCB rules in an artificial social system, after a number of iterations this group of agents can enter the harmony state wherein each agent fully believes its neighbors.

scholarly journals Computational exploration of treadmilling and protrusion growth observed in fire ant rafts

2021 ◽  
Author(s):  
Robert James Wagner ◽  
Franck J Vernerey
Keyword(s):  
Solenopsis Invicta ◽  
Swarm Robotics ◽  
Collective Motion ◽  
Active Matter ◽  
Local Interactions ◽  
Agent Based ◽  
Computational Exploration ◽  
In Fire ◽  
Cellular Aggregates

Condensed active matter systems regularly achieve cooperative emergent functions that individual constituents could not accomplish alone. The rafts of fire ants (Solenopsis invicta) are often studied in this context for their ability to create structures comprised entirely of their own bodies, including tether-like protrusions that facilitate exploration of flooded environments. While similar protrusions are observed in cytoskeletons and cellular aggregates, they are generally dependent on morphogens or external gradients leaving the isolated role of local interactions poorly understood. Here we demonstrate through an ant-inspired, agent-based numerical model how protrusions in ant rafts may emerge spontaneously due to local interactions and how phases of exploratory protrusion growth may be induced by increased ant activity. These results provide an example in which functional morphogenesis of condensed active matter may emerge purely from locally-driven collective motion and may provide a source of inspiration for the development of autonomous active matter and swarm robotics.

Hume’s System of Space and Time

2010 ◽  
Vol 13 (1) ◽  
pp. 76-89 ◽  
Author(s):  
Angela M. Coventry
Keyword(s):  
Fundamental Principle ◽  
Space And Time ◽  
The Relationship

Hume’s account of the origin and nature of our ideas of space and time is generally thought to be the least satisfactory part of his empiricist system of philosophy. The main reason is internal in that the account is judged to be inconsistent with Hume’s fundamental principle for the relationship between senses and cognition, the copy principle. This paper defends Hume against the inconsistency objection by offering a new systematic interpretation of Hume on space and time and illuminating more generally the role of the copy principle in his philosophy. Humes Theorie des Wesens und des Ursprungs unserer Vorstellungen von Raum und Zeit wird generell zu den am wenigsten befriedigenden Teilen seiner empiristischen Philosophie gezählt. Der Hauptgrund dafür ist werkimmanent: Die Raum- Zeit-Theorie einerseits und Humes „copy principle“ andererseits – d.h. dasjenige Fundamental-Prinzip, das die Relation zwischen unseren Sinnen und unserem Denken regelt – werden als miteinander inkonsistent erachtet. Dieser Beitrag bietet eine neue, systematische Interpretation der Raum-Zeit-Lehre Humes und eine umfassendere Darstellung der Rolle des „copy principles“ in seiner Philosophie an. Auf diese Weise wird Hume gegen den Vorwurf der Inkonsistenz verteidigt.

scholarly journals Spatial-temporal principles of the symbols of Ukrainian sacred art

1999 ◽  
pp. 93-100
Author(s):  
O. Ishchenko
Keyword(s):  
Sacred Art ◽  
Divine Essence ◽  
Space And Time

Understanding Ukrainian sacred art is impossible without understanding how ancient Ukrainians felt space and time, transformed and materialized this understanding in signs, the most ancient among which is the circle, square and cross. These symbols are universal spatial and temporal signs that play the role of archetypes and have deep pre-Christian roots and origins. Their original, cosmological essence of the understanding of nature, the desire to convey the divine essence through comprehension of space and time converges the sacred art of the Christian, Hindu and Islamic worlds.

scholarly journals Phylogeographic Studies Depict the Role of Space and Time Scales of Plant Speciation in a Highly Diverse Neotropical Region

2016 ◽  
Vol 35 (4) ◽  
pp. 215-230 ◽  
Author(s):  
Bárbara Simões Santos Leal ◽  
Clarisse Palma da Silva ◽  
Fábio Pinheiro
Keyword(s):  
Time Scales ◽  
Neotropical Region ◽  
Space And Time

scholarly journals Mediterranean Forest Bird Communities and the Role of Landscape Heterogeneity in Space and Time

2018 ◽  
pp. 318-349 ◽  
Author(s):  
Lluís Brotons ◽  
Sergi Herrando ◽  
Clélia Sirami ◽  
Vassiliki Kati ◽  
Mario Díaz
Keyword(s):  
Landscape Heterogeneity ◽  
Bird Communities ◽  
Mediterranean Forest ◽  
Forest Bird ◽  
Space And Time

INTERPRETATION OF SPACE AND TIME IN ONTOLOGICAL PHILOSOPHY NAVOI

2021 ◽  
Vol 1 (2) ◽  
pp. 80-87
Author(s):  
Toji Omonovich Norov ◽  
Keyword(s):  
Human Life ◽  
History Of Philosophy ◽  
Human Intelligence ◽  
Time And Space ◽  
Space And Time ◽  
History Of ◽  
Life On Earth ◽  
The Universe ◽  
Holy Book

The universe, the space that make up their basis planets in it, their creation, the main essence of their creation, form, composition, meaning, movements, interactions, their influence on human life and activities, the role of man in the universe and in life on Earth, life, the criteria of activity and processes occurring in time and space have long been of interest to humanity. One of the main problems in the history of philosophy is the question of space and time. This problem was defined in different ways in the great schools of thought by thinkers of different periods. One of these great thinkers is Alisher Navoi. Navoi's works, along with other socio-philosophical themes, uniquely express and analyze the problems of the firmament and time. Its main feature is that it is based on the divine (pantheistic) religion, Islam, its holy book, the Koran and other theological sources, as well as on the secrets of nature and the Universe, the main miracle of Allah - human intelligence, the power of enlightenment, they are the key revealing all these secrets.

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