Brownian Agents and Active Particles

Brownian Agents and Active Particles

This book lays out a vision for a coherent framework for understanding complex systems.

Author: Frank Schweitzer

Publisher: Springer Science & Business Media

ISBN: 9783540738442

Category: Business & Economics

Page: 420

View: 430

When we contemplate phenomena as diverse as electrochemical deposition or the spatial patterns of urban development, it is natural to assume that they havenothing incommon. Afterall, therearemanylevelsinthehierarchythat builds up from atoms to human society, and the rules that govern atoms are quite di?erent from those that govern the geographical emergence of a city. The common view among many, if not most, biologists and social scientists is that the devil is entirely in the details. This school of thought asserts that social science and biology have little or nothing in common, and indeed many biologists claim that even di?erent ?elds of biology have little in common. If they are right, then science can only proceed by recording vast lists of details that no common principles will ever link together. Physics, in contrast, has achieved a parsimonious description for a broad range of phenomena based on only a few general principles. The phenomena that physics addresses are unquestionably much simpler than those of biology or social science, and on the surface appear entirely dissimilar. A cell is far more complicated than a pendulum or an atom, and human society, being builtoutofagreatmanycells, isfarmorecomplicatedstill. Cellsandsocieties have many layers of hierarchical organization, with complex functional and computational properties; they have identities, idiosyncracies stemming from an accumulation of historical contingency that makes them impossible to characterize in simple mathematical terms. Their complexity is far beyond that of the simple systems usually studied in physic
Categories: Business & Economics

Active Motion and Swarming

Active Motion and Swarming

Structure formation by active Brownian particles. Physics Letters A, 207:140–146,
1995. ... F. Schweitzer. Brownian Agents and Active Particles: ... Complex motion
of Brownian particles with energy depots. Physical Review Letters ...

Author: Pawel Romanczuk

Publisher: Logos Verlag Berlin GmbH

ISBN: 9783832529901

Category: Science

Page: 159

View: 217

Recently, there has been an increasing focus on various biological and physical systems known as "active matter". Examples of such systems range from individual units, such as motile cells or artificial self-propelled particles, to large systems of interacting active particles or individuals. The emergence of large-scale collective motion, as exhibited by flocks of birds or bacterial colonies, is just one prominent and fascinating example of self-organization in active matter systems. In this work, we discuss different individual-based models of active matter using the concept of active Brownian motion. The first part of this work explores the dynamical behavior of single active particles with a particular emphasis on the impact of so-called active fluctuations. The second part extends the scope of this study to interacting active Brownian particles and their collective behavior. First, a systematic derivation of kinetic equations for active Brownian particles with velocity alignment is presented. Further on, motivated by recent biological observations, a new type of "escape-pursuit" model of collective motion is introduced and successfully employed in modeling collective locust behavior.
Categories: Science

Agent Based Modeling

Agent Based Modeling

Modelling migration and economic agglomeration with active Brownian particles.
Advances in Complex Systems, 1(1):11–37, 1998. [385] F. Schweitzer. Brownian
Agents and Active Particles: Collective Dynamics References 221.

Author: Norman Ehrentreich

Publisher: Springer Science & Business Media

ISBN: 9783540738794

Category: Business & Economics

Page: 232

View: 666

This book reconciles the existence of technical trading with the Efficient Market Hypothesis. By analyzing a well-known agent-based model, the Santa Fe Institute Artificial Stock Market (SFI-ASM), it finds that when selective forces are weak, financial evolution cannot guarantee that only the fittest trading rules will survive. Its main contribution lies in the application of standard results from population genetics which have widely been neglected in the agent-based community.
Categories: Business & Economics

Active Particles Volume 1

Active Particles  Volume 1

This volume collects ten surveys on the modeling, simulation, and applications of active particles using methods ranging from mathematical kinetic theory to nonequilibrium statistical mechanics.

Author: Nicola Bellomo

Publisher: Birkhäuser

ISBN: 9783319499963

Category: Mathematics

Page: 402

View: 912

This volume collects ten surveys on the modeling, simulation, and applications of active particles using methods ranging from mathematical kinetic theory to nonequilibrium statistical mechanics. The contributing authors are leading experts working in this challenging field, and each of their chapters provides a review of the most recent results in their areas and looks ahead to future research directions. The approaches to studying active matter are presented here from many different perspectives, such as individual-based models, evolutionary games, Brownian motion, and continuum theories, as well as various combinations of these. Applications covered include biological network formation and network theory; opinion formation and social systems; control theory of sparse systems; theory and applications of mean field games; population learning; dynamics of flocking systems; vehicular traffic flow; and stochastic particles and mean field approximation. Mathematicians and other members of the scientific community interested in active matter and its many applications will find this volume to be a timely, authoritative, and valuable resource.
Categories: Mathematics

Collective Emotions

Collective Emotions

Brownian Agents and Active Particles. ... Dynamics in the Natural and Social
Sciences. Berlin: Springer. Schweitzer, F., & Garcia, D. (2010). An agentbased ...
Modelling collective opinion formation by means of active Brownian particles.

Author: Christian von Scheve

Publisher: OUP Oxford

ISBN: 9780191006982

Category: Psychology

Page: 464

View: 912

Although collective emotions have a long tradition in scientific inquiry, for instance in mass psychology and the sociology of rituals and social movements, their importance for individuals and the social world has never been more obvious than in the past decades. The Arab Spring revolution, the Occupy Wall Street movement, and mass gatherings at music festivals or mega sports events clearly show the impact collective emotions have both in terms of driving conflict and in uniting people. But these examples only show the most obvious and evident forms of collective emotions. Others are more subtle, although less important: shared moods, emotional atmospheres, and intergroup emotions are part and parcel of our social life. Although these phenomena go hand in hand with any formation of sociality, they are little understood. Moreover, there still is a large gap in our understanding of individual emotions on the one hand and collective emotional phenomena on the other hand. This book presents a comprehensive overview of contemporary theories and research on collective emotions. It spans several disciplines and brings together, for the first time, various strands of inquiry and up-to-date research in the study of collective emotions and related phenomena. In focusing on conceptual, theoretical, and methodological issues in collective emotion research, the volume narrows the gap between the wealth of studies on individual emotions and inquiries into collective emotions. The book catches up with a renewed interest into the collective dimensions of emotions and their close relatives, for example emotional climates, atmospheres, communities, and intergroup emotions. This interest is propelled by a more general increase in research on the social and interpersonal aspects of emotion on the one hand, and by trends in philosophy and cognitive science towards refined conceptual analyses of collective entities and the collective properties of cognition on the other hand. The book includes sections on: Conceptual Perspectives; Collective Emotion in Face-to-Face Interactions; The Social-Relational Dimension of Collective Emotion; The Social Consequences of Collective Emotions; Group-Based and Intergroup Emotion; Rituals, Movements, and Social Organization; and Collective Emotions in Online Social Systems. Including contributions from psychologists, philosophers, sociologists, and neuroscience, this volume is a unique and valuable contribution to the affective sciences literature.
Categories: Psychology

Mathematical Approaches to Biological Systems

Mathematical Approaches to Biological Systems

Ethology 107:1125–1136 Schweitzer F (2003) Brownian agents and active
particles. Springer, Berlin/Heidelberg Shinoda S (2013) Analysis of the influence
of visual cues for foraging ants (in Japanese). Graduate thesis, Department of ...

Author: Toru Ohira

Publisher: Springer

ISBN: 9784431554448

Category: Science

Page: 166

View: 611

This book presents the most recent mathematical approaches to the growing research area of networks, oscillations, and collective motions in the context of biological systems. Bringing together the results of multiple studies of different biological systems, this book sheds light on the relations among these research themes. Included in this book are the following topics: feedback systems with time delay and threshold of sensing (dead zone), robustness of biological networks from the point of view of dynamical systems, the hardware-oriented neuron modeling approach, a universal mechanism governing the entrainment limit under weak forcing, the robustness mechanism of open complex systems, situation-dependent switching of the cues primarily relied on by foraging ants, and group chase and escape. Research on different biological systems is presented together, not separated by specializations or by model systems. Therefore, the book provides diverse perspectives at the forefront of current mathematical research on biological systems, especially focused on networks, oscillations, and collective motions. This work is aimed at advanced undergraduate, graduate, and postdoctoral students, as well as scientists and engineers. It will also be of great use for professionals in industries and service sectors owing to the applicability of topics such as networks and synchronizations.
Categories: Science

A Perspective Look at Nonlinear Media

A Perspective Look at Nonlinear Media

With this volume, the editors offer a selection of articles on nonlinear topics in progress, ranging from physics and chemistry to biology and some applications of social science.

Author: Jürgen Parisi

Publisher: Springer Science & Business Media

ISBN: 3540639950

Category: Science

Page: 376

View: 365

Concepts of nonlinear physics are applied to an increasing number of research disciplines. With this volume, the editors offer a selection of articles on nonlinear topics in progress, ranging from physics and chemistry to biology and some applications of social science. The book covers quantum optics, electron crystallization, cellular or flow patterns in fluids and in granular media, biological systems, and the control of brain structures via neuronal excitation. Chemical patterns are looked at both in bulk solutions and on surfaces in heterogeneous systems. From regular structures, the authors turn to the more complex behavior in biology and physics, such as hydrodynamical turbulence, low-dimensional dynamics in solid-state physics, and gravity.
Categories: Science

Self formation Theory and Aplications sic

Self formation Theory and Aplications  sic

rings of particles rotating in opposite direction are formed . ... Cahlenbuhr , V . ,
An elementary model for dircted active motion , Chaos , Soliton & Fractals , 4 ,
1917 - 1930 ( 1994 ) . ... [ 11 ] Schweitzer , F . , Brownian agents and active
particles ...

Author: Stepas Janusonis

Publisher: Scitec Publications

ISBN: UOM:39015058308142

Category: Mathematics

Page: 496

View: 710

This volume comprises the proceedings of the 6th international conference on Self-Formation Theory and Applications.
Categories: Mathematics

Mathematical Reviews

Mathematical Reviews

( E . S . Lee ) 2004d : 60222 60J80 ( 60J10 , 60J27 ) Schweitzer , Frank *
Brownian agents and active particles . ... and social systems , 2004h : 91007
Schweitzer , Marc Alexander ( with Griebel , Michael ) A particle - partition of unity
method .

Author:

Publisher:

ISBN: UVA:X006180727

Category: Mathematics

Page:

View: 618

Categories: Mathematics

Advances in Artificial Life

Advances in Artificial Life

Collective behavior of interacting self - propelled particles . Physica A , 281 : 17 ...
Active Brownian particles with energy depots modelling animal mobility .
BioSystems , 49 : 17 ... Brownian Agents and Active Particles . Collective
Dynamics in ...

Author:

Publisher:

ISBN: UOM:39015048088630

Category: Artificial intelligence

Page:

View: 560

Categories: Artificial intelligence

Cities and Complexity

Cities and Complexity

Understanding Cities with Cellular Automata, Agent-based Models, and Fractals
Michael Batty. Schimansky - Geier , L . ... Brownian Agents and Active Particles :
Collective Dynamics in the Natural and Social Sciences . Springer Verlag , Berlin
 ...

Author: Michael Batty

Publisher: Mit Press

ISBN: UOM:39015062849081

Category: Political Science

Page: 565

View: 935

Michael Batty offers a comprehensive view of urban dynamics in the context of complexity theory, presenting models that demonstrate how complexity theory can embrace a myriad of processes and elements that combine into organic wholes.
Categories: Political Science

Acta Physica Polonica

Acta Physica Polonica

[ 8 ] F. Schweitzer , Brownian Agents and Active Particles , Springer Series in
Synergetics , Springer , Berlin 2003 . [ 9 ] A. Ordemann , F. Moss , G. Balaszi ,
Motions of Daphnia in a Light Field : Random Walks with a Zooplankton in F.
Beck , M.T. ...

Author:

Publisher:

ISBN: CHI:82262242

Category: Nuclear physics

Page:

View: 260

Categories: Nuclear physics

Fluctuations and Order

Fluctuations and Order

The volume that you have before you is the result of a growing realization that fluctuations in nonequilibrium systems playa much more important role than was 1 first believed.

Author: Mark Millonas

Publisher: Springer Science & Business Media

ISBN: 0387946020

Category: Science

Page: 456

View: 127

The volume that you have before you is the result of a growing realization that fluctuations in nonequilibrium systems playa much more important role than was 1 first believed. It has become clear that in nonequilibrium systems noise plays an active, one might even say a creative, role in processes involving self-organization, pattern formation, and coherence, as well as in biological information processing, energy transduction, and functionality. Now is not the time for a comprehensive summary of these new ideas, and I am certainly not the person to attempt such a thing. Rather, this short introductory essay (and the book as a whole) is an attempt to describe where we are at present and how the viewpoint that has evolved in the last decade or so differs from those of past decades. Fluctuations arise either because of the coupling of a particular system to an ex ternal unknown or "unknowable" system or because the particular description we are using is only a coarse-grained description which on some level is an approxima tion. We describe the unpredictable and random deviations from our deterministic equations of motion as noise or fluctuations. A nonequilibrium system is one in which there is a net flow of energy. There are, as I see it, four basic levels of sophistication, or paradigms, con cerning fluctuations in nature. At the lowest level of sophistication, there is an implicit assumption that noise is negligible: the deterministic paradigm.
Categories: Science

Noise in Complex Systems and Stochastic Dynamics

Noise in Complex Systems and Stochastic Dynamics

D. Helbing, Traffic and related self-driven many-particle systems. Rev. Mod. Phys.
, 73, 1067-1 141, 2001. 5. ... F. Schweitzer, Brownian Agents and Active Particles,
Springer, Berlin, 2003. 16. R. Kiihne, R. Mahnke, I. Lubashevsky, and J.

Author: Lutz Schimansky-Geier

Publisher: Society of Photo Optical

ISBN: 0819449741

Category: Technology & Engineering

Page: 534

View: 841

Proceedings of SPIE present the original research papers presented at SPIE conferences and other high-quality conferences in the broad-ranging fields of optics and photonics. These books provide prompt access to the latest innovations in research and technology in their respective fields. Proceedings of SPIE are among the most cited references in patent literature.
Categories: Technology & Engineering

BICS 2008

BICS 2008

J. Kennedy and R.C. Eberhart , " Particle Swarm Optimization " In Proceedings of
IEEE International Conference on Neural Networks ( Perth , Australia ) , IEEE
Service ... F. Schweitzer , Brownian Agents and Active Particles , Springer , 2003 .

Author: Calin Enachescu

Publisher: American Institute of Physics

ISBN: UCSD:31822037773140

Category: Computers

Page: 234

View: 697

This book contains selected papers presented at the International Conference "Bio-Inspired Computational Methods Used for Difficult Problems Solving. Development of Intelligent and Complex Systems" - BICS 2008, organized by the Romanian Academy, Bucharest and Petru Major University of Tg. Mures, held on 5-7 November 2008 at Petry Major University of Tg. Mures, Romania. The aim of this conference was to bring together researchers working in the main areas of Complex Systems, Artificial Intelligence, Intelligent Systems and Natural Computing for presenting their recent results and exchanging ideas. The papers included in the book provide an introduction and also a state of the art to the bio-inspired computer science. The areas covered were those of natural computing, such as evolutionary and neural computing, as well as younger research directions, such as DNA computing, ant colony optimization, with connections and applications to intelligent complex systems and to medical informatics. Thus, both directions of research, from biology to informatics and from informatics to biology are illustrated.
Categories: Computers

Journal of the Physical Society of Japan

Journal of the Physical Society of Japan

4 ) F. Schweitzer : Brownian Agents and Active Particles ( SpringerVerlag , Berlin
, 2003 ) . 5 ) T. Kawakatsu and K. Kawasaki : Physica A 167 ( 1990 ) 690 . 6 )
S. A. Safran : Statistical Thermodynamics of Surfaces , Interfaces , and
Membranes ...

Author:

Publisher:

ISBN: UCLA:L0090684457

Category: Physics

Page:

View: 941

Categories: Physics

Environment and Planning

Environment and Planning

... Galstyan A , 2004 , “ Automatically modeling group behavior of simple agents ”
, Agent Modeling Workshop , AAMAS ... Journal of Geographical Information
Science 15 77 - 100 Schweitzer F , 2002a Brownian Agents and Active Particles
 ...

Author:

Publisher:

ISBN: UCSD:31822037771888

Category: Architecture

Page:

View: 550

Categories: Architecture

Environment Planning

Environment   Planning

... Evacuation Dynamics ( Springer , Berlin ) Schweitzer F , 2003 Brownian
Agents and Active Particles : Collective Dynamics in the Natural and Social
Sciences ( Springer , Berlin ) Stanley H E , Ostrowksy N ( Eds ) , 1986 On Growth
and Form ...

Author:

Publisher:

ISBN: 0308518X

Category: City planning

Page:

View: 724

Categories: City planning

Encyclopedia of Mathematical Physics

Encyclopedia of Mathematical Physics

Schweitzer F ( 2003 ) Brownian Agents and Active Particles , Springer Series in
Synergetics , ( Collective dynamics in the natural and social sciences , With a
foreword by J . Doyne Farmer ) . Berlin : Springer . String Field Theory L Rastelli ...

Author: Jean-Pierre Françoise

Publisher: Academic Press

ISBN: 0125126603

Category: Science

Page: 3500

View: 183

The Encyclopedia of Mathematical Physics provides a complete resource for researchers, students and lecturers with an interest in mathematical physics. It enables readers to access basic information on topics peripheral to their own areas, to provide a repository of the core information in the area that can be used to refresh the researcher's own memory banks, and aid teachers in directing students to entries relevant to their course-work. The Encyclopedia does contain information that has been distilled, organised and presented as a complete reference tool to the user and a landmark to the body of knowledge that has accumulated in this domain. It also is a stimulus for new researchers working in mathematical physics or in areas using the methods originating from work in mathematical physics by providing them with focused high quality background information. Editorial Board: Jean-Pierre Françoise, Université Pierre et Marie Curie, Paris, France Gregory L. Naber, Drexel University, Philadelphia, PA, USA Tsou Sheung Tsun, University of Oxford, UK Also available online via ScienceDirect (2006) - featuring extensive browsing, searching, and internal cross-referencing between articles in the work, plus dynamic linking to journal articles and abstract databases, making navigation flexible and easy. For more information, pricing options and availability visit www.info.sciencedirect.com. First comprehensive interdisciplinary coverage Mathematical Physics explained to stimulate new developments and foster new applications of its methods to other fields Written by an international group of experts Contains several undergraduate-level introductory articles to facilitate acquisition of new expertis Thematic index and extensive cross-referencing to provide easy access and quick search functionality Also available online with active linking
Categories: Science

Modeling Complexity in Economic and Social Systems

Modeling Complexity in Economic and Social Systems

... 10 Modelling Migration and Economic Agglomeration with Active Brownian
Particles FRANK SCHWEITZER Institute of ... economic aggregation in a system
of employed immobile ) and unemployed ( mobile ) agents which respond to
local ...

Author: Frank Schweitzer

Publisher: World Scientific

ISBN: 9812380353

Category: Business & Economics

Page: 391

View: 756

Economics and the social sciences are, in fact, the ?hard? sciences, as Herbert Simon argued, because the complexity of the problems dealt with cannot simply be reduced to analytically solvable models or decomposed into separate subprocesses. Nevertheless, in recent years, the emerging interdisciplinary ?sciences of complexity? have provided new methods and tools for tackling these problems, ranging from complex data analysis to sophisticated computer simulations. In particular, advanced methods developed in the natural sciences have recently also been applied to social and economic problems.The twenty-one chapters of this book reflect this modern development from various modeling perspectives (such as agent-based models, evolutionary game theory, reinforcement learning and neural network techniques, time series analysis, non-equilibrium macroscopic dynamics) and for a broad range of socio-economic applications (market dynamics, technological evolution, spatial dynamics and economic growth, decision processes, and agent societies). They jointly demonstrate a shift of perspective in economics and the social sciences that is allowing a new outlook in this field to emerge.
Categories: Business & Economics