Extending the self-organization algorithm of chlorosomal bacteriochlorophylls to synthetic pigments

2007 ◽  
Vol 11 (04) ◽  
pp. 277-286 ◽  
Author(s):  
Mihaela Carmen Balaban ◽  
Teodor Silviu Balaban
Keyword(s):  
The Self ◽  
Self Organization ◽  
Nonpolar Solvents ◽  
Zinc Porphyrins ◽  
Cyano Groups ◽  
Synthetic Pigments ◽  
Self Organizing

Two new zinc porphyrins having two meso-undecyl solubilizing groups and two meso-formyl groups or two meso-cyano groups have been prepared in good yields and were shown by stationary absorption and fluorescence spectroscopies to self-organize in nonpolar solvents such as n-heptane. The diformyl and dicyano recognition groups can thus successfully replace the hydroxy and carbonyl recognition groups encountered in the natural self-organizing bacteriochlorophylls and which were, up to now, the only recognition groups used in synthetic or semisynthetic bacteriochlorophyll mimics.

ROBUSTNESS OF GUIDED SELF-ORGANIZATION AGAINST SENSORIMOTOR DISRUPTIONS

2013 ◽  
Vol 16 (02n03) ◽  
pp. 1350001 ◽  
Author(s):  
GEORG MARTIUS
Keyword(s):  
Fault Tolerance ◽  
Visual Target ◽  
The Self ◽  
Self Organization ◽  
Proof Of Concept ◽  
Practical Applications ◽  
Wheeled Robot ◽  
Continuous Domains ◽  
Sensor Configuration ◽  
Self Organizing

Self-organizing processes are crucial for the development of living beings. Practical applications in robots may benefit from the self-organization of behavior, e.g., to increase fault tolerance and enhance flexibility, provided that external goals can also be achieved. We present results on the guidance of self-organizing control by visual target stimuli and show a remarkable robustness to sensorimotor disruptions. In a proof of concept study an autonomous wheeled robot is learning an object finding and ball-pushing task from scratch within a few minutes in continuous domains. The robustness is demonstrated by the rapid recovery of the performance after severe changes of the sensor configuration.

An Approach to Chaos and Self-Organizing Behaviors in Symbiotic Relationships between Human and Robots

1996 ◽  
Vol 8 (4) ◽  
pp. 318-322 ◽  
Author(s):  
Mitsuo Wada ◽  
◽  
Sadayoshi Mikami
Keyword(s):  
The Self ◽  
Self Organization ◽  
Great Pleasure ◽  
Symbiotic Relationships ◽  
Self Organizing

This paper describes the role of chaos and the self-organization for achieving a symbiosis between the human and robots through an evolution of the robots and an adaptability of the robots to a complexity. It will be our great pleasure if this paper is helpful for promoting discussions among the readers.

scholarly journals Mõistuse suutlikkuse piiridest

2009 ◽  
pp. 81-91
Author(s):  
Leo Näpinen
Keyword(s):  
The Self ◽  
Self Organization ◽  
Open Society ◽  
General Rules ◽  
The World ◽  
Self Organizing

Toetudes Friedrich August Hayeki spontaansete kordade ja George Sorose poolt teostatud Karl Raimund Popperi avatud ühiskonna mõiste edasiarendusele ning autori enese tööle iseorganiseerumise ja organiseerimise mõistete eksplitseerimisel, näidatakse, et mõistuse suutlikkusele maailma muutmisel (konstrueerimisel ja organiseerimisel) seab piirid iseorganiseerumine—struktuuride spontaanne, s.o. loomulik, ilma välise korrastava põhjuseta, tekkimine. Spontaansuse õitsenguks peavad valitsema teatavad üldised, suures koosluses käitumise reeglid. Iseorganiseeruva ja evolutsioneeruva reaalsuse, kuhu me ise kuulume, mõistmine on ebatäiuslik (s.o. see ei saa olla neutraalne või objektiivne või täielik) jameie tegevusel on ettekavatsemata tagajärjed. Kõik loomulik-ajaloolised süsteemid organiseeruvad ise kui avatud süsteemid omaeneste eesmärkidega ja spontaanse käitumisega terviklikus iseorganiseeruvas maailmas.Basing upon Friedrich August Hayek's concept of spontaneous orders and upon the elaboration of Karl Raimund Popper's concept of open society carried out by George Soros, and also basing upon author's own former work on the explication of the concepts of self-organization and organization, it is demonstrated that this is the self-organization - a spontaneous, i.e., a natural (without the external ordering reason) formation of structures - that puts the limits to the capability of mind in changing the world. For flourishing the spontaneity, certain general rules must exist. The understanding of the self-organizing and evolving reality where we ourselves belong to is imperfect (i.e., it cannot be neutral or objective or complete) and our activity leads to the results we have not intended.

scholarly journals Self-organization at air-water interfaces emerging from Marangoni and elastocapillary effects directed by amphiphile filament connections.

2021 ◽  
Author(s):  
Mitch Winkens ◽  
Peter A. Korevaar
Keyword(s):  
Driving Forces ◽  
Building Blocks ◽  
The Self ◽  
Self Organization ◽  
Marangoni Flow ◽  
Water Interface ◽  
Air Water Interface ◽  
Novel Method ◽  
Floating Objects ◽  
Self Organizing

Marangoni and elastocapillary effects are well-known as driving forces in the self-organization of floating objects at air-water interfaces. The release of surface active compounds generates Marangoni flows that cause repulsion, whereas capillary forces drive attraction. Typically, these interactions are non-directional and mechanisms to establish directional connections between the self-organizing elements are lacking. In this work, we unravel the mechanisms involved in the self-organization of a linear amphiphile into millimeter-long filaments that form connections between floating droplets. First, we show how the release of the amphiphile tetra(ethylene glycol) monododecyl ether from a floating source droplet onto the air-water interface generates a Marangoni flow. This flow extrudes self-assembled amphiphile filaments which grow from the source droplet, and concomitantly repels floating droplets in the surroundings. A hydrophobic drain droplet that depletes the amphiphiles from the air-water interface directs the Marangoni flow and thereby the growing filaments. We show how these filaments, upon tethering to the drain, potentially facilitate internal Marangoni convection and elastocapillary effects, which attract the drain back towards the source droplet. Furthermore, this concept establishes connections that are selective to the composition of the drain droplets – which influences the rate at which they deplete the amphiphile – such that repulsive and attractive forces can be balanced. Thereby, we provide a novel method through which directional attraction can be established in synthetic self-organizing systems, and advance our understanding of how complexity arises from simple building blocks.

Developing our own organisations

2021 ◽  
pp. 99-110
Author(s):  
Peter Beresford
Keyword(s):  
Identity Politics ◽  
The Self ◽  
Self Organization ◽  
Disabled People ◽  
Shared Experience ◽  
Working Together ◽  
The Difference ◽  
Self Organizing

This chapter develops the discussion about working together by exploring how to have a real say — how we can develop our own organisations, as a basis for self-organization, rather than merely serving other people's causes. It looks beyond identity politics and the limitations associated with them, to focus on organising on the basis of shared experience, particularly of discrimination and exclusion. The chapter provides a basis for self-organizing around common understandings and strongly internalised goals arising from the desire to challenge oppression. It then returns to the self-organizing of disabled people, which has highlighted the difference between traditional processes where non-disabled people controlled the agenda and one where disabled people seek to speak and act on their own behalf, setting up and controlling their own organisations. Ultimately, the chapter mentions the case study of a 'user-led organisation', Shaping Our Lives, in which the author has been actively involved. Like other self-run organisations, it has done things differently to achieve different objectives, offering helpful insights for advancing participatory ideology in practice.

scholarly journals Tuning the Spatially Controlled Growth, Structural Self-Organizing and Cluster-Assembling of the Carbyne-Enriched Nanostructured Metamaterials during Ion-Assisted Pulse-Plasma Deposition

2021 ◽  
Author(s):  
Alexander Lukin ◽  
Oğuz Gülseren
Keyword(s):  
Pattern Formation ◽  
Electric Field ◽  
Spatial Structure ◽  
Plasma Deposition ◽  
The Self ◽  
Self Organization ◽  
Structure And Properties ◽  
Self Organized ◽  
Wave Patterns ◽  
Self Organizing

Structural self-organizing and pattern formation are universal and key phenomena observed during growth and cluster-assembling of the carbyne-enriched nanostructured metamaterials at the ion-assisted pulse-plasma deposition. Fine tuning these universal phenomena opens access to designing the properties of the growing carbyne-enriched nano-matrix. The structure of bonds in the grown carbyne-enriched nano-matrices can be programmed by the processes of self-organization and auto-synchronization of nanostructures. We propose the innovative concept, connected with application of the universal Cymatics phenomena during the predictive growth of the carbyne-enriched nanostructured metamaterials. We also propose the self-organization approach for increase stability of the long linear carbon chains. The main idea of suggested concept is manipulating by the self-organized wave patterns excitation phenomenon and their distribution by the spatial structure and properties of the nanostructured metamaterial grows region through the new synergistic effect. Mentioned effect will be provided through the vibration-assisted self-organized wave patterns excitation along with simultaneous manipulating by their properties through the electric field. We propose to use acoustic activation of the plasma zone of nano-matrix growing. Interaction between the inhomogeneous electric field distribution generated on the vibrating layer and the plasma ions will serve as the additional energizing factor controlling the local pattern formation and self-organizing of the nano-structures. Suggested concept makes it possible to provide precise predictive designing the spatial structure and properties of the advanced carbyne-enriched nanostructured metamaterials.

It’s a Puzzle: A Self-Organizing Activity

2017 ◽  
Vol 2 (3) ◽  
pp. 166-178
Author(s):  
Janet McCollum ◽  
Catherine R. Barber
Keyword(s):  
Experiential Learning ◽  
Learning Theory ◽  
Learning Experience ◽  
The Self ◽  
Self Organization ◽  
Abstract Concepts ◽  
Experiential Learning Theory ◽  
Key Points ◽  
Bridge Building ◽  
Self Organizing

Helping students connect abstract concepts to concrete situations is often a challenge. Students who are unable to make the basic connections are at risk of spending the semester and beyond misunderstanding key points and their application. In this article, we provide a framework that includes debriefing, bridge building, and assimilation to help mitigate the challenge of making the abstract, concrete. We use “It’s a Puzzle,” a fast-paced group activity based on principles of experiential learning theory, to illustrate how we use this framework to help students understand and apply self-organization concepts to concrete situations. “It’s a Puzzle” provides participants with an opportunity to experience self-organization as a group, to reflect on the self-organizing interaction from the perspective of self and group, and to apply the learning experience to self-organization concepts. We have successfully used this activity as an introduction to self-organization at both the undergraduate and graduate level.

scholarly journals Promoting Disaster Resilience: Operation Mechanisms and Self-Organizing Processes of Crowdsourcing

2020 ◽  
Vol 12 (5) ◽  
pp. 1862 ◽  
Author(s):  
Zhijun Song ◽  
Hui Zhang ◽  
Chris Dolan
Keyword(s):  
Natural Disaster ◽  
Adaptive System ◽  
Complex Adaptive System ◽  
The Self ◽  
Theoretical Research ◽  
Self Organization ◽  
Disaster Resilience ◽  
Depth Analysis ◽  
Complex Adaptive ◽  
Self Organizing

It is often difficult to realize effective governance and management within the inherent complexity and uncertainty of disasters. The application of crowdsourcing, through encouraging voluntary support from the general public, advances efficient disaster governance. Twelve international case studies of crowdsourcing and natural disaster governance were collected for in-depth analysis. Influenced by Complex Adaptive System theory, we explored the self-organizing operation mechanisms and self-organization processes of crowdsourcing within disaster governance. The self-organizing operation mechanisms of crowdsourcing are influenced by the multi-directional interaction between the crowdsourcing platform, the initiator (who commences the crowdsourcing process) and the contractor (who undertakes disaster reduction tasks). The benefits of crowdsourcing for governance structure and self-organization processes in natural disaster governance are reflected in three perspectives: strengthening communication and coordination, optimizing emergency decision-making, and improving the ability to learn and adapt. This paper discusses how crowdsourcing can promote disaster resilience from the perspective of the complex adaptive system to enrich the theoretical research on crowdsourcing and disaster resilience.

Transcendental self-organization

2006 ◽  
Vol 29 (5) ◽  
pp. 478-478 ◽  
Author(s):  
Carl N. Johnson ◽  
Melanie Nyhof
Keyword(s):  
The Self ◽  
Self Organization ◽  
Cognitive Systems ◽  
Good Case ◽  
Self Organizing

Bering makes a good case for turning attention to an organized system that provides the self with transcendental meaning. In focusing on the evolutionary basis of this system, however, he overlooks the self-organizing properties of cognitive systems themselves. We propose that the illusory system Bering describes can be more generally and parsimoniously viewed as an emergent by-product of self-organization, with no need for specialized “illusion by design.”

The Time-Organized Map Algorithm: Extending the Self-Organizing Map to Spatiotemporal Signals

2003 ◽  
Vol 15 (5) ◽  
pp. 1143-1171 ◽  
Author(s):  
Jan C. Wiemer
Keyword(s):  
The Self ◽  
Self Organization ◽  
Self Organizing Map ◽  
Dynamic Neural Networks ◽  
Signal Representations ◽  
Neural Representations ◽  
The Neural Network ◽  
Propagating Waves ◽  
The Common ◽  
Self Organizing

The new time-organized map (TOM) is presented for a better understanding of the self-organization and geometric structure of cortical signal representations. The algorithm extends the common self-organizing map (SOM) from the processing of purely spatial signals to the processing of spatiotemporal signals. The main additional idea of the TOM compared with the SOM is the functionally reasonable transfer of temporal signal distances into spatial signal distances in topographic neural representations. This is achieved by neural dynamics of propagating waves, allowing current and former signals to interact spatiotemporally in the neural network. Within a biologically plausible framework, the TOM algorithm (1) reveals how dynamic neural networks can self-organize to embed spatial signals in temporal context in order to realize functional meaningful invariances, (2) predicts time-organized representational structures in cortical areas representing signals with systematic temporal relation, and (3) suggests that the strength with which signals interact in the cortex determines the type of signal topology realized in topographic maps (e.g., spatially or temporally defined signal topology). Moreover, the TOM algorithm supports the explanation of topographic reorganizations based on time-to-space transformations (Wiemer, Spengler, Joublin, Stagge, & Wacquant, 2000).

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