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7,700 | Parameter estimation in nonlinear stochastic differential equations | nlin.AO | We discuss the problem of parameter estimation in nonlinear stochastic
differential equations based on sampled time series. A central message from the
theory of integrating stochastic differential equations is that there exists in
general two time scales, i.e. that of integrating these equations and that of
sampling. W... | physics |
7,701 | The Minority Game with Variable Payoffs | nlin.AO | In the standard minority game, each agent in the minority group receives the
same payoff regardless of the size of the minority group. Of great interest for
real social and biological systems are cases in which the payoffs to members of
the minority group depend on the size of the minority group. This latter
includes t... | physics |
7,702 | A family of multi-value cellular automaton model for traffic flow | nlin.AO | A family of multi-value cellular automaton (CA) associated with traffic flow
is presented in this paper. The family is obtained by extending the rule-184
CA, which is an ultradiscrete analogue to the Burgers equation. CA models in
the family show both metastable states and stop-and-go waves, which are often
observed in... | physics |
7,703 | The effect of synchronized area on SOC behavior in a kind of Neural Network Model | nlin.AO | Based on the LISSOM model and the OFC earthquake model, we introduce a
self-organized feature map Neural Network model . It displays a "Self Organized
Criticality"(SOC) behavior. It can be seen that the feature area (synchronized
area) produced by self-organized process brings about some definite effect on
SOC behavior... | physics |
7,704 | Scaling in Athletic World Records | nlin.AO | World records in athletics provide a measure of physical as well as
physiological human performance. Here we analyse running records and show that
the mean speed as a function of race time can be described by two scaling laws
that have a breakpoint at about 150-170 seconds (corresponding to the ~1,000 m
race). We inter... | physics |
7,705 | Cluster Coagulation and Growth Limited by Surface Interactions with Polymers | nlin.AO | The physical and chemical properties of metal nanoparticles differ
significantly from those of free metal atoms as well as from the properties of
bulk metals, and therefore, they may be viewed as a transition regime between
the two physical states. Within this nanosize regime, there is a wide
fluctuation of properties,... | physics |
7,706 | Remarks on scaling properties inherent to the systems with hierarchically organized supplying network | nlin.AO | We study the emergence of a power law distribution in the systems which can
be characterized by a hierarchically organized supplying network. It is shown
that conservation laws on the branches of the network can, at some
approximation, impose power law properties on the systems. Some simple examples
taken from economic... | physics |
7,707 | Spatial competition and price formation | nlin.AO | We look at price formation in a retail setting, that is, companies set
prices, and consumers either accept prices or go someplace else. In contrast to
most other models in this context, we use a two-dimensional spatial structure
for information transmission, that is, consumers can only learn from nearest
neighbors. Man... | physics |
7,708 | Schemata Evolution and Building Blocks | nlin.AO | In the light of a recently derived evolution equation for genetic algorithms
we consider the schema theorem and the building block hypothesis. We derive a
schema theorem based on the concept of effective fitness showing that schemata
of higher than average effective fitness receive an exponentially increasing
number of... | physics |
7,709 | Schemata as Building Blocks: Does Size Matter? | nlin.AO | We analyze the schema theorem and the building block hypothesis using a
recently derived, exact schemata evolution equation. We derive a new schema
theorem based on the concept of effective fitness showing that schemata of
higher than average effective fitness receive an exponentially increasing
number of trials over t... | physics |
7,710 | The Role of Innovation within Economics | nlin.AO | This paper discusses dynamic evolutionary economics, and introduces a model
of such. | physics |
7,711 | Adaptation to the Edge of Chaos in the Self-Adjusting Logistic Map | nlin.AO | Self-adjusting, or adaptive systems have gathered much recent interest. We
present a model for self-adjusting systems which treats the control parameters
of the system as slowly varying, rather than constant. The dynamics of these
parameters is governed by a low-pass filtered feedback from the dynamical
variables of th... | physics |
7,712 | What you always wanted to know about genetic algorithms but were afraid to hear | nlin.AO | In spite of their seemingly "obvious" virtues as a search strategy, genetic
algorithms have ended up playing only a modest role as design tools in science
and engineering. We review the reasons for this apparent failure, and we
suggest a more relaxed view of their utility. | physics |
7,713 | Transition from coherence to bistability in a model of financial markets | nlin.AO | We present a model describing the competition between information
transmission and decision making in financial markets. The solution of this
simple model is recalled, and possible variations discussed. It is shown
numerically that despite its simplicity, it can mimic a size effect comparable
to a crash. Two extensions... | physics |
7,714 | Function and form in networks of interacting agents | nlin.AO | The main problem we address in this paper is whether function determines form
when a society of agents organizes itself for some purpose or whether the
organizing method is more important than the functionality in determining the
structure of the ensemble. As an example, we use a neural network that learns
the same fun... | physics |
7,715 | Structure-generating mechanisms in agent-based models | nlin.AO | The emergence of dynamical structures in multi-agent systems is analysed.
Three different mechanisms are identified, namely: (1) sensitive-dependence and
convex coupling, (2) sensitive-dependence and extremal dynamics and (3)
interaction through a collectively generated field. The dynamical origin of the
emergent struc... | physics |
7,716 | Synchronization of Kauffman networks | nlin.AO | We analyze the synchronization transition for a pair of coupled identical
Kauffman networks in the chaotic phase. The annealed model for Kauffman
networks shows that synchronization appears through a transcritical
bifurcation, and provides an approximate description for the whole dynamics of
the coupled networks. We sh... | physics |
7,717 | Complex spatial organization in a simple model of resource allocation | nlin.AO | A dynamical model for the distribution of resources between competing agents
is studied. While global competition leads to the accumulation of all the
resources by a single agent, local competition allows for a wider resource
distribution. Multiplicative processes give rise to almost-ordered spatial
structures, thourgh... | physics |
7,718 | The thunder of distant Net storms | nlin.AO | Computers and routers on the Internet send each other error messages (called
ICMP datagrams) to signal conditions such as network congestion or blackouts.
While these datagrams are very rare, less than 0.001% of total traffic, they
hold very important global information about problems and congestions elsewhere
in the N... | physics |
7,719 | Interface dynamics equations: their properties and computer simulation | nlin.AO | We investigate the interface dynamic in Laplacian growth model, using the
conformal mapping technique. Starting from the governing equation for the
conformal map, obtained by B.Shraiman and D.Bensimon, we derive different
possible forms of the equation. Some of them have evident physical
representation and are convenie... | physics |
7,720 | Universal Asymptotic Behavior of Mortgage Prepayments | nlin.AO | Mortgage prepayments play a crucial role in the pricing and hedging of
mortgage backed securities. An important feature of mortgage prepayment
modeling is burnout; as time goes on those borrowers who have the greatest
tendency to refinance are removed from the pool leaving only those that are
less likely to refinance. ... | physics |
7,721 | On Complexity and Emergence | nlin.AO | Numerous definitions for complexity have been proposed over the last half
century, with little consensus achieved on how to use the term. A definition of
complexity is supplied here that is closely related to the Kolmogorov
Complexity and Shannon Entropy measures widely used as complexity measures, yet
addresses a numb... | physics |
7,722 | Complex structures in generalized small worlds | nlin.AO | We propose a generalization of small world networks, in which the
reconnection of links is governed by a function that depends on the distance
between the elements to be linked. An adequate choice of this function lets us
control the clusterization of the system. Control of the clusterization, in
turn, allows the gener... | physics |
7,723 | Synchronizing to the Environment: Information Theoretic Constraints on Agent Learning | nlin.AO | We show that the way in which the Shannon entropy of sequences produced by an
information source converges to the source's entropy rate can be used to
monitor how an intelligent agent builds and effectively uses a predictive model
of its environment. We introduce natural measures of the environment's apparent
memory an... | physics |
7,724 | Asymptotic analysis of a model of autoresonance | nlin.AO | Autoresonance is a phase locking phenomenon occurring in nonlinear
oscillatory system, which is forced by oscillating perturbation. Many physical
applications of the autoresonance are known in nonlinear physics. The essence
of the phenomenon is that the nonlinear oscillator selfadjusts to the varying
external condition... | physics |
7,725 | Scale-free networks are not robust under neutral evolution | nlin.AO | Recently it has been shown that a large variety of different networks have
power-law (scale-free) distributions of connectivities. We investigate the
robustness of such a distribution in discrete threshold networks under neutral
evolution. The guiding principle for this is robustness in the resulting
phenotype. The num... | physics |
7,726 | Two Time Correlation For A Noise Driven Double-Well Oscillator In The Suzuki Regime | nlin.AO | We study the two time correlation for the noise driven dynamics of the
double-well oscillator in the Suzuki regime. It is seen that for very small
noise strength the correaltion function shows a lack of translational
invariance for very long times characterised by the Suzuki scaling variable. We
see that in this strong... | physics |
7,727 | The Ising Model for Changes in Word Ordering Rule in Natural Language | nlin.AO | The order of `noun and adposition' is the important parameter of word
ordering rules in the world's languages. The seven parameters, `adverb and
verb' and others, have a strong dependence on the `noun and adposition'.
Japanese as well as Korean, Tamil and several other languages seem to have a
stable structure of word ... | physics |
7,728 | Using Immunology Principles for Anomaly Detection in Electrical Systems | nlin.AO | The immune system is a cognitive system of complexity comparable to the brain
and its computational algorithms suggest new solutions to engineering problems
or new ways of looking at these problems. Using immunological principles, a two
(or three-) module algorithm is developed which is capable of launching a
specific ... | physics |
7,729 | Function Dynamics | nlin.AO | We show mathematical structure of the function dynamics, i.e., the dynamics
of interval maps $f_{n+1} = (1-\e)f_n + \e f_n\circ f_n$ and clarify the types
of fixed points, the self-referential structure and the hierarchical structure. | physics |
7,730 | Averaging of an autoresonance model | nlin.AO | Autoresonance is a phase locking phenomenon occurring in nonlinear
oscislatory system, which is forced by oscillating perturbation. Many physical
applicatcons of the autoresonance are known in nonlenear physics. The essence
of the phenomecon is that the nonlinear oscillator selfadjusts to the varying
external condition... | physics |
7,731 | The avalanche dynamics in Bak-Sneppen evolution model observed with standard distribution width of fitness | nlin.AO | See the updated version arXiv:nlin/0111028. | physics |
7,732 | Reconstructing Bologna. The City as an Emergent Computational System - A Study in the Complexity of Urban Structures. Part I: The Basic Idea and Fundamental Concepts | nlin.AO | The conceptual background for a detailed study of the urban form of the city
of Bologna is discussed with a view to modern methodological insight as it is
being presented by recent results of complexity theory and the theory of
self-organized criticality. The basic idea is to visualize the city of Bologna
as an example... | physics |
7,733 | Critical Points for Random Boolean Networks | nlin.AO | A model of cellular metabolism due to S. Kauffman is analyzed. It consists of
a network of Boolean gates randomly assembled according to a probability
distribution. It is shown that the behavior of the network depends very
critically on certain simple algebraic parameters of the distribution. In some
cases, the analyti... | physics |
7,734 | Plasticity and learning in a network of coupled phase oscillators | nlin.AO | A generalized Kuramoto model of coupled phase oscillators with slowly varying
coupling matrix is studied. The dynamics of the coupling coefficients is driven
by the phase difference of pairs of oscillators in such a way that the coupling
strengthens for synchronized oscillators and weakens for non-synchronized
pairs. T... | physics |
7,735 | Avalanche dynamics in Bak-Sneppen evolution model observed with standard distribution width of fitness | nlin.AO | We introduce the standard distribution width of fitness to characterize the
global and individual features of a ecosystem in the Bak-Sneppen evolution
model. Through tracking this quantity in evolution, a different hierarchy of
avalanche dynamics, $w_{0}$ avalanche is observed. The corresponding gap
equation and the se... | physics |
7,736 | A nonlinear component of the analytical error | nlin.AO | In clinical chemistry, a number of studies shows that the probability of very
large errors is much greater than expected from the Gaussian distribution. In
addition, it has been empirically found that the behavior of nonlinear complex
systems is often asymptotically exponential. Consequently, we may assume that
the err... | physics |
7,737 | Quasi-stationary Stefan problem and computer simulation of interface dynamics | nlin.AO | The computer simulation of quasistationary Stefan problem has been realized.
Different representations of the Laplacian growth model are considered. The
main attention has been paid for the interface dynamics represented by integro
differential equations. Numerical approach has been realized by use of
interpolating pol... | physics |
7,738 | Dynamical Networks in Function Dynamics | nlin.AO | As a first step toward realizing a dynamical system that evolves while
spontaneously determining its own rule for time evolution, function dynamics
(FD) is analyzed. FD consists of a functional equation with a self-referential
term, given as a dynamical system of a 1-dimensional map. Through the time
evolution of this ... | physics |
7,739 | Decentralization as Organizing Principle of Emergent Urban Structures | nlin.AO | With a view to the ongoing Bologna project
(www.arXiv.org/pdf/nlin.AO/0109025) general organizing principles of emergent
structures in social systems are being discussed with a view to the meaning of
decentralization. It is proposed to introduce decentralization as a principle
for organizing emergent structures in a ge... | physics |
7,740 | Phase Structure of Resource Allocation Games | nlin.AO | We consider a class of games that are generalizations of the minority game,
in that the demand and supply of the resource are specified independently. This
allows us to study systems in which agents compete under different demand
loads. Among other features, we find the existence of a robust phase change
with a coexist... | physics |
7,741 | Complexity in some Physical Systems | nlin.AO | The LMC-complexity introduced by Lopez-Ruiz, Mancini and Calbet [Phys. Lett.
A 209, 321-326 (1995)] is calculated for different physical situations: one
instance of classical statistical mechanics, normal and exponential
distributions, and a simplified laser model. We stand out the specific value of
the population inve... | physics |
7,742 | Emergence of cooperation, network formation and selection of interactions | nlin.AO | We propose a model of emergence of cooperation in evolutionary games that
high- lights the role of network formation and effect of network structure. In
line with empirical data, the model proposes a mechanism that explains the
persistence of heterogeneous types (heterogeneity in rules for changing
behavior) within a p... | physics |
7,743 | A Study on the Relevance of Information in Discriminative and Non-Discriminative Media | nlin.AO | In this paper we compare the relevance of information obtained from
"discriminative" media and from "non-discriminative" media. Discriminative
media are the ones which accumulate and deliver information using a heuristic
selection of it. This can be made by humans, or by artificial intelligent
systems, exhibiting some ... | physics |
7,744 | Models and Metaphors. Part I: From the Boundaries of Formalization to the Visualization of the Non-Formalized | nlin.AO | The explicit relationship among perception, communication, and design is
being discussed in some detail, in order to relate it to characteristic details
of the modeling of the world which defines the scientific and artistic
activities of humans, in the first place, but also the philosophical grasping
of the world and i... | physics |
7,745 | Models and Metaphors. Part II: The Aesthetical Conception of Natural Laws | nlin.AO | Following the results and the general methodological framework of a
preceeding paper (Models and Metaphors, part I, henceforth: MM), we develop
some results on the epistemological state of natural laws and ask for explicit
possibilities of mediating the contexts of nature (in terms of the sciences)
and aesthetics. | physics |
7,746 | The Fractal Dimension of an Oil Spray | nlin.AO | We study the fractal dimension of the contour of the liquid-gas interface in
a spray. Our images include both, the linking region and the break-up region
and are obtained with a high-resolution shadowgraph technique; this means that
the images can then be subject to an intensity filtering, equivalent to a
threshold ana... | physics |
7,747 | Graph Theory and the Evolution of Autocatalytic Networks | nlin.AO | We give a self-contained introduction to the theory of directed graphs,
leading up to the relationship between the Perron-Frobenius eigenvectors of a
graph and its autocatalytic sets. Then we discuss a particular dynamical system
on a fixed but arbitrary graph, that describes the population dynamics of
species whose in... | physics |
7,748 | Catalytic Reaction Sets, Decay, and the Preservation of Information | nlin.AO | We study the ability to maintain information in a population of reacting
polymers under the influence of decay, i.e., spontaneous breakdown of large
polymers. At a certain decay rate, it becomes impossible to maintain a
significant concentration of large polymers, while it is still possible to
maintain sets of smaller ... | physics |
7,749 | Power market dynamics: the statistical mechanics of transaction-based control | nlin.AO | Statistical mechanics provides a useful analog for understanding the behavior
of complex adaptive systems, including power markets and the power systems they
intend to govern. Transaction-based control is founded on the conjecture that
the regulation of complex systems based on price-mediated strategies (e.g.,
auctions... | physics |
7,750 | Coarse Bifurcation Diagrams via Microscopic Simulators: A State-Feedback Control-Based Approach | nlin.AO | The arc-length continuation framework is used for the design of state
feedback control laws that enable a microscopic simulator trace its own
open-loop coarse bifurcation diagram. The steering of the system along solution
branches is achieved through the manipulation of the bifurcation parameter,
which becomes our actu... | physics |
7,751 | Phase Structures of Resource Allocation Games | nlin.AO | We consider a class of games that are generalizations of the minority game,
in that the demand and supply of the resource are specified independently. This
allows us to study systems in which agents compete for a resource under
different demand loads. Among other features, we find, using numerical
simulations the exist... | physics |
7,752 | Towards a theory of consciousness: Proposal for the resolution of the homunculus fallacy with predictions | nlin.AO | In this paper we argue that no forms of Turing test are either necessary or
sufficient to establish if a machine is conscious or not. Furthermore, from a
modeling point of view, the problem is that the Turing test does not really
provide testable predictions. We believe that the model structure should
explain the funct... | physics |
7,753 | Nasca Lines: A Mystery wrapped in an Enigma | nlin.AO | We analyze the geometrical structure of the astonishing Nasca geoglyphs in
terms of their fractal dimension with the idea of dating these manifestations
of human cultural engagements in relation to one another. Our findings suggest
that the first delineated images consist of straight, parallel lines and that
having sop... | physics |
7,754 | Statistical Mechanics: A Possible Model for Market-based Electric Power Control | nlin.AO | Statistical mechanics provides a useful analog for understanding the behavior
of complex adaptive systems, including electric power markets and the power
systems they intend to govern. Market-based control is founded on the
conjecture that the regulation of complex systems based on price-mediated
strategies (e.g., auct... | physics |
7,755 | Approach to self-similarity in Smoluchowski's coagulation equations | nlin.AO | We consider the approach to self-similarity (or dynamical scaling) in
Smoluchowski's equations of coagulation for the solvable kernels $K(x,y)=2$,
$x+y$ and $xy$. In addition to the known self-similar solutions with
exponential tails, there are one-parameter families of solutions with algebraic
decay, whose form is rel... | physics |
7,756 | Dynamical scaling in Smoluchowski's coagulation equations: uniform convergence | nlin.AO | We consider the approach to self-similarity (or dynamical scaling) in
Smoluchowski's coagulation equations for the solvable kernels K(x,y)=2, x+y and
xy. We prove the uniform convergence of densities to the self-similar solution
with exponential tails under the regularity hypothesis that a suitable moment
have an integ... | physics |
7,757 | Network dependence of strong reciprocity | nlin.AO | Experimental evidence suggests that human decisions involve a mixture of
self-interest and internalized social norms which cannot be accounted for by
the Nash equilibrium behavior of Homo Oeconomicus. This led to the notion of
strong reciprocity (or altruistic punishment) to capture the human trait
leading an individua... | physics |
7,758 | Binding Social and Cultural Networks: A Model | nlin.AO | Until now, most studies carried onto social or semantic networks have
considered each of these networks independently. Our goal here is to bring a
formal frame for studying both networks empirically as well as to point out
stylized facts that would explain their reciprocal influence and the emergence
of clusters of age... | physics |
7,759 | History-dependent synchronization in the Burridge-Knopoff model | nlin.AO | A three-blocks Burridge-Knopoff model is investigated. The dimensionless
velocity-dependent friction force $F(v)\propto (1+av)^{-1}$ is linearized
around $a=0$. In this way, the model is transformed into a six-dimensional
mapping $\mathbf{x}(t_{n})\to \mathbf{x}(t_{n+1})$, where $t_n$ are time
moments when a block star... | physics |
7,760 | Adaptability and Diversity in Simulated Turn-taking Behaviour | nlin.AO | Turn-taking behaviour is simulated in a coupled agents system. Each agent is
modelled as a mobile robot with two wheels. A recurrent neural network is used
to produce the motor outputs and to hold the internal dynamics. Agents are
developed to take turns on a two-dimensional arena by causing the network
structures to e... | physics |
7,761 | Diffusion of Power in Randomly Perturbed Hamiltonian Partial Differential Equations | nlin.AO | We study the evolution of the energy (mode-power) distribution for a class of
randomly perturbed Hamiltonian partial differential equations and derive {\it
master equations} for the dynamics of the expected power in the discrete modes.
In the case where the unperturbed dynamics has only discrete frequencies
(finitely o... | physics |
7,762 | A Mean-Field Theory of Cellular Automata Model for Distributed Packet Networks | nlin.AO | A Mean-Field theory is presented and applied to a Cellular Automata model of
distributed packet-switched networks. It is proved that, under a certain set of
assumptions, the critical input traffic is inversely proportional to the free
packet delay of the model. The applicability of Mean-Field theory in queue
length est... | physics |
7,763 | An observation of a nascent fractal pattern in MD simulation for a fragmentation of an fcc lattice | nlin.AO | To seek for a possible origin of fractal pattern in nature, we perform a
molecular dynamics simulation for a fragmentation of an infinite fcc lattice.
The fragmentation is induced by the initial condition of the model that the
lattice particles have the Hubble-type radial expansion velocities. As time
proceeds, the ave... | physics |
7,764 | Non-Markov stochastic dynamics of real epidemic process of respiratory infections | nlin.AO | The study of social networks and especially of the stochastic dynamics of the
diseases spread in human population has recently attracted considerable
attention in statistical physics. In this work we present a new statistical
method of analyzing the spread of epidemic processes of grippe and acute
respiratory track inf... | physics |
7,765 | How can we think the complex? | nlin.AO | This chapter does not deal with specific tools and techniques for managing
complex systems, but proposes some basic concepts that help us to think and
speak about complexity. We review classical thinking and its intrinsic
drawbacks when dealing with complexity. We then show how complexity forces us
to build models with... | physics |
7,766 | Long-Time Behaviour and Self-Similarity in a Coagulation Equation with Input of Monomers | nlin.AO | For a coagulation equation with Becker-Doring type interactions and
time-independent monomer input we study the detailed long-time behaviour of
nonnegative solutions and prove the convergence to a self-similar function. | physics |
7,767 | $p$-adic discrete dynamical systems and their applications in physics and cognitive sciences | nlin.AO | This review is devoted to dynamical systems in fields of $p$-adic numbers:
origin of $p$-adic dynamics in $p$-adic theoretical physics (string theory,
quantum mechanics and field theory, spin glasses), continuous dynamical systems
and discrete dynamical systems. The main attention is paid to discrete
dynamical systems ... | physics |
7,768 | Adaptive Synchronization in Coupled Dynamic Networks | nlin.AO | This paper studies synchronization in coupled nonlinear dynamic networks with
unknown parameters. Adaptation can be added to one or several elements in the
network, while preserving the global synchronization conditions derived in
previously. This implies that new nodes can be added to the network without
prior knowled... | physics |
7,769 | The Structural Dynamics of Corruption: Artificial Society Approach | nlin.AO | Corruption has been an important issue as it becomes obstacle to achieve the
better and more efficient economic governmental system. The paper defines
corruption in two ways, as state capture and administrative corruption to grasp
the quintessence of the corruption cases modeled in dynamical computational
social system... | physics |
7,770 | Formation and Destruction of Autocatalytic Sets in an Evolving Network Model | nlin.AO | I analyse a model of an evolving network represented as a directed graph;
each node corresponds to one molecular species and the links to catalytic
interactions between species. Over short timescales the graph remains fixed
while relative populations of the molecular species change according to a set
of coupled differe... | physics |
7,771 | Percolation of New Product Critical Market Penetration | nlin.AO | A simulation of new product market penetration in a social environment is
performed, using a spintronic model, where each element of a 3D network
interacts with its first neighbors. Agents are assumed to be rational, with a
perfect market foresight.
Unitary production cost decreases when consumption is increased. Sim... | physics |
7,772 | Power Law Signature in Indonesian Legislative Election 1999-2004 | nlin.AO | We analyzed the distribution of the result of Indonesian 1999 and 2004
legislative election in order to have the statistical properties or any
stylized facts. The paper shows that the analysis results the power-law
signature persistently in the election of the House of Representative in 1999
and 2004 and more clearly i... | physics |
7,773 | Individual strategies in complementarity games and population dynamics | nlin.AO | We introduce and study an evolutionary complementarity game where in each
round a player of population 1 is paired with a member of population 2. The
game is symmetric, and each player tries to obtain an advantageous deal, but
when one of them pushes too hard, no deal at all can be concluded, and they
both loose. The g... | physics |
7,774 | Coupled Chaotic Oscillators and Its Relation with Artificial Quadrupeds' Central Pattern Generator | nlin.AO | Animal locomotion employs different periodic patterns known as animal gaits.
In 1993 Collins and Stewart achieved the characterization in quadrupeds and
bipeds by using permutation symmetries groups which impose constrains in the
locomotion centre called Central Generator Pattern (CGP) in the animal brain.
They modelle... | physics |
7,775 | Nobility and Stupidity: Modeling the Evolution of Class Endogamy | nlin.AO | Class endogamy is a phenomenon in which nobles only marry other nobles and
commoners only marry other commoners. The origin of class endogamy, and of
social stratification in general, is a major open question in archaeology. This
paper implements a verbal model proposed by Marcus and Flannery as a class of
agent-based ... | physics |
7,776 | A mathematical description of natural shapes in our nonlinear world | nlin.AO | The work presents two examples of simple mathematical formulas which are
natural nonlinear modifications (one being a generalization) of Gielis'
formula. These formulas involve a comparable number of parameters and provide
non-Platonic representations of a vast diversity of natural shapes and patterns
by incorporating ... | physics |
7,777 | Possible Laws for Artificial Life Evolution | nlin.AO | Motivated by a recent article on open problems in artificial life, here I
postulate three laws which form a mathematical framework to describe artificial
life evolutionary dynamics. They are based on a continuous approximation of
population dynamics. Four dynamical elements are required in this formulation:
ascendant m... | physics |
7,778 | Synchronization of two interacting populations of oscillators | nlin.AO | We analyze synchronization between two interacting populations of different
phase oscillators. For the important case of asymmetric coupling functions, we
find a much richer dynamical behavior compared to that of symmetrically coupled
populations of identical oscillators (Okuda and Kuramoto, 1991). It includes
three ty... | physics |
7,779 | Self Running Droplet: Emergence of Regular Motion from Nonequilibrium Noise | nlin.AO | Spontaneous motion of an oil droplet driven by chemical nonequilibricity is
reported. It is shown that the droplet undergoes regular rhythmic motion under
appropriately designed boundary conditions, whereas it exhibits random motion
in an isotropic environment. This study is a novel manifestation on the direct
energy t... | physics |
7,780 | Democracy: Order out of Chaos | nlin.AO | We construct a majority cellular automata based model to explain the
power-law signatures in Indonesian general election results. The understanding
of second-order phase transitions between two different conditions inspires the
model. The democracy is assumed as critical point between the two extreme
socio-political si... | physics |
7,781 | Objects That Make Objects: The Population Dynamics of Structural Complexity | nlin.AO | To analyze the evolutionary emergence of structural complexity in physical
processes we introduce a general, but tractable, model of objects that interact
to produce new objects. Since the objects--\emph{$epsilon$-machines}--have well
defined structural properties, we demonstrate that complexity in the resulting
popula... | physics |
7,782 | Emergence of Specialization from Global Optimizing Evolution in a Multi-Agent System | nlin.AO | The evolution of specialization in a multi-agent system is studied both by
computer simulation and Markov process model. Many individual agents search for
and exploit resources to get global optimization in an environment without
complete information. With the selection acting on agent specialization at the
level of sy... | physics |
7,783 | A study on a self-organized criticality in a dynamical many-body system | nlin.AO | A novel mechanism for the generation of self-organized criticality (SOC) is
discussed in terms of the coupled-vibration model where the total system is
forced under the uniform expansion of the Hubble type. This system shows a
robust SOC behavior while the maximum size of the fluctuation, number of
correlated particles... | physics |
7,784 | Complexity vs stability in small-world networks | nlin.AO | According to the May-Wigner stability theorem, increasing the complexity of a
network inevitably leads to its destabilization, such that a small perturbation
will be able to disrupt the entire system. One of the principal arguments
against this observation is that it is valid only for random networks, and
therefore doe... | physics |
7,785 | Coarse-grained periodic orbits and bifurcations in a Markov chain model for evolution of labor division | nlin.AO | We construct a Markov process model to describe the evolution of labor
division and its dynamical behavior is investigated by numerical simulations in
detail. We have shown that under the mechanism of increasing returns, the
division of labor will emerge from the initial homogenous distribution and with
the change of p... | physics |
7,786 | Managing Complexity | nlin.AO | Physical analogs have shown considerable promise for understanding the
behavior of complex adaptive systems, including macroeconomics, biological
systems, social networks, and electric power markets. Many of today's most
challenging technical and policy questions can be reduced to a distributed
economic control problem... | physics |
7,787 | GridWiseTM: The Benefits of a Transformed Energy System | nlin.AO | The demand for electricity is expected to continue its historical growth
trend far into the future and particularly over the 20-year projection period
discussed in this report. To meet this growth with traditional approaches will
require added generation, transmission, and distribution, costing up to $1.4
billion/GW ($... | physics |
7,788 | Deterministic Bak-Sneppen model. Lyapunov spectrum and avalanches as return times | nlin.AO | A deterministic version of the Bak-Sneppen model is studied. The role of the
Lyapunov spectrum in the onset of scale-free behavior is established and
avalanches are interpreted as return times to a zero-measure set. The problem
of accurate determination of the scaling exponents near the critical barrier is
addressed us... | physics |
7,789 | Epidemic Spreading in Dynamic Small World Networks | nlin.AO | In this paper, we use a series of small world networks to simulate the
epidemic spreading in the real world. To make our model more similar to the
real world, we employ a parameter $p_{move}$ to denote its moving probability,
which corresponds with the general mobility of individuals in realistic social
network. The ne... | physics |
7,790 | A Time-Varying Complex Dynamical Network Model And Its Controlled Synchronization Criteria | nlin.AO | Today, complex networks have attracted increasing attention from various
fields of science and engineering. It has been demonstrated that many complex
networks display various synchronization phenomena. In this paper, we introduce
a time-varying complex dynamical network model. We then further investigate its
synchroni... | physics |
7,791 | Innovation as Evolution: Case Study Phylomemetic of Cellphone Designs | nlin.AO | Cellular phone is one of the most developing technological artifacts today.
The evolution occurs through random innovation. Our effort is trying to view
the evolution of this artifact from memetics. By constructing a phylomemetic
tree based on cellular phone memes to infer or estimate the evolutionary
history and relat... | physics |
7,792 | On complex adaptive systems and terrorism | nlin.AO | Complex adaptive systems (CAS) are ubiquitous in nature. They are basic in
social sciences. An overview of CAS is given with emphasize on the occurrence
of bad side effects to seemingly wise decisions. Hence application to terrorism
is given. Some conclusions on how to deal with this phenomena are proposed. | physics |
7,793 | Local Average and Scaling Property of $1/f^α$ Random Fields | nlin.AO | We use the techniques developed in [1] to study the local average of random
fields with spectral density $1/f^{\alpha}$. We study their scaling properties
and show that the self-similarity of $1/f$ random fields is preserved under the
local average. We study how the original random fields can be recovered from
the loca... | physics |
7,794 | Foundations of Swarm Intelligence: From Principles to Practice | nlin.AO | Swarm Intelligence (SI) is a relatively new paradigm being applied in a host
of research settings to improve the management and control of large numbers of
interacting entities such as communication, computer and sensor networks,
satellite constellations and more. Attempts to take advantage of this paradigm
and mimic t... | physics |
7,795 | Emergence of multiple time scales in coupled oscillators with plastic frequencies | nlin.AO | A coupled-phase oscillator model where each oscillator has an angular
velocity that varies due to the interaction with other oscillators is studied.
This model is proposed to deepen the understanding of the relationship between
the coexistence and the plasticity of time scales in complex systems. It is
found that initi... | physics |
7,796 | Social Cognitive Maps, Swarm Perception and Distributed Search on Dynamic Landscapes | nlin.AO | Swarm Intelligence (SI) is the property of a system whereby the collective
behaviors of (unsophisticated) entities interacting locally with their
environment cause coherent functional global patterns to emerge. SI provides a
basis with which it is possible to explore collective (or distributed) problem
solving without ... | physics |
7,797 | Varying the Population Size of Artificial Foraging Swarms on Time Varying Landscapes | nlin.AO | Swarm Intelligence (SI) is the property of a system whereby the collective
behaviors of (unsophisticated) entities interacting locally with their
environment cause coherent functional global patterns to emerge. SI provides a
basis with wich it is possible to explore collective (or distributed) problem
solving without c... | physics |
7,798 | Doubling the Intensity of an ERL Based Light Source | nlin.AO | A light source based on an Energy Recovered Linac (ERL) [1] consist of a
superconducting linac and a transfer line that includes wigglers and undulators
to produce the synchrotron light. The transfer line brings the electrons
bunches back to the beginning of the linac so that their energy can be
recovered when they tra... | physics |
7,799 | Dynamic scaling in stick-slip friction | nlin.AO | We introduce a generalized homogeneous function to describe the joint
probability density for magnitude and duration of events in self-organized
critical systems (SOC). It follows that the cumulative distributions of
magnitude and of duration are power-laws with exponents $\alpha$ and $\tau$
respectively. A power-law r... | physics |
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