Complex Systems

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Complex Systems
Alfred Hubler experimental Physics Graduates
1-2 grad students year, modest funding of
100k/year (MCC, GK12 grant, conference
grants) Karin Dahmen theoretical
Physics Richard Weaver experimental Physics
Alex Scheeline experimental Chemistry
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• Complex system
• A system with a large throughput of
• a fluid turbulence, river networks, traffic
• chemicals flames explosion
• tension fracture
• electrical current lightning, dielectric
  breakthrough, agglomeration
• heat segregation, convection
• information internet, social networks,
  reaction networks
• Key control parameters Astro Physics large
  distances, Quantum Mechanics low temperature,
  Condensed Matter Physics high density, Particle
  Physics high energy density, , Complex System
  Physics large throughput.
• The throughput is considered large, if there is a
  sudden appearance of a pattern or dynamics
  (self-organization) in the limiting state
  (equilibrated state - ignore transients).
• This self-organization causes emergent properties.

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Emergent patterns specific research objective -
predict control network growth decay in a
reproducable lab experiment
?
Particles under the influence of a high-voltage
electric current Will this initial configuration
produce a spiral?
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Emergent patterns specific research objective -
predict control network growth decay in a
reproducable lab experiment
No, spirals are unstable.
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• Emergent patterns
• substructure (stem, branch, sub-branch, )
• different relationships of component to
  collective behavior (termini, branching points,
  trunks)
• the relationship of internal behavior to
  external influence (graph structure versus
  minimum resistance, controls, )
• multiscale structure and dynamics (fractal
  dimension 1.67)

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Emergent patterns comparison of
graph-theoretical models to experiments
The number of termini and branching points for
three models, Minimum Spaning Tree (MST), Random
Growth (RAN), Propagation Front (PFM) and the
natural experiments. MST produces the closest
match with experiments.
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The number of trees is not an emergent property
J. Jun, A. Hubler, PNAS 102, 536 (2005)
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Emergent dynamics Experimental evidence of mixed
reality states in physical systems
Objective Understand synchronization between
virtual and real systems. Approach - Couple a
real dynamical system to its virtual counterpart
with an instantaneous bi-direction coupling (so
far non-linear pendulum, future network). -
Measure an order parameter of the real and the
virtual systems and then detect synchronization.
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Emergent dynamics Mixed reality states in
physical systems, why are they important?
- Virtual systems match their real counter parts
with ever-increasing accuracy, because of the
increasing speed of computers. - New hardware
for instantaneous bi-directional coupling. - In
mixed reality states there is no clear boundary
between the real and the virtual system. Mixed
reality states can be used to analyze and control
the real systems with high precision a new way
to do resonance spectroscopy.
Publication The paper First experimental
evidence for mixed reality states in an
inter-reality system" by Vadas Gintautas and
Alfred Hubler, in Phys. Rev. E 75, 057201
(2007), Was discussed in monthly APS News
Letter twice, was topic of APS press conference,
and selected for the APS tip sheet
http//www.aps.org/about/tipsheets/tip68.cfm
Photo A. Hubler and V. Gintautas at the
inter-reality system
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• Current research topics
• Adaptation to the Edge of Chaos self-adjusting
  chemical reactions video feedback, Tim
  Wotherspoon (G), Alex Scheeline - experimental
• Current Induced Superconducivity percolation
  clusters of superconducting fluctuations, Peter
  Fleck (G) - experimental
• Attractor Structure of Dissipative Wave-Particle
  Systems particle swarms surfing and breaking
  waves, Davit Sivil (G) experimental
  theoretical
• Fractal Absorbers for Energy-Efficient
  Desalination Martin Singleton (G) - both
• Resonance Curves of Chaotic Systems Glenn
  Foster (G, graduated 2008), Xian Xu (G, graduated
  2007), K. Dahmen theoretical numerical
• Mixed Reality Vadas Gintautas (G, graduated
  2008), Vishal Soni (UG) - experimental
• Prediction Control of Network Growth Rotoban
  Basu Thakur (G, new) - experimental
• Digital Batteries - nano-capacitors, Onyeama
  Osuagwu (G, m new) theoretical exp.
• Wind Power to Electrical Power without Moving
  Parts imitate thunderstorms, Matthias Gempel
  (G, exchange student) - experimental
• Single Precision Finite Element Methods for
  Terra Computers Nathan Pollard (UG, m)
• Discrete Models, More Accurate Than Time
  Continuous Models chaotic water wheel, Natasha
  Sachdeva (UG, m) theoretical numerical
• Roughness Phase Transition dynamical impact of
  sharp mirrors, Vadas Gintautas, LANL-t
• Energy/Information/Energy Transformation, Jim
  Brown, UNM Albuquerque - t
• Digital Wires nano-structured wires, Benny
  Brown, UC Davis - experimental

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A. H. Group activities since January
2007 11/10/2008 - 11/13/2008 Invited talk at
Nanotechnology Conference, Amman, Jordan
11/7/2008 - 11/9/2008 Invited to the Business
Network and Board of Trustees Symposium of the
Santa Fe Institute, NM. 10/15/2008 - 10/17/2008
Invited talk at 3rd Network Science Workshop,
United States Military Academy, Westpoint, NY.
9/12/2008 T. Wotherspoon and A. Hubler,"Adaption
to the Edge of Chaos with Random-Wavelet
Feedback" is accepted by the Journal of Physical
Chemistry 8/26/2008 Graduate student Glenn
Foster defends his Ph.D. thesis successfully.
7/31/2008 - 8/1/2008 Invited talk at the MECS
workshop at MITRE in Washington. 7/7/2008 V.
Gintautas and A. Hubler, "Resonant forcing of
nonlinear systems of differential equations" is
accepted by the AIP journal CHAOS 6/13/2008
Lecture to 50 Middle Schools students (GUTS
program) 6/1/2008 - 6/30/2008 Labs at the
Complex Systems Summer School of the Santa Fe
Institute 5/12/2008 Presentation on mixed
reality at UCS2008 5/12/2008-5/15/2008 Chair
UCS2008 at UIUC, gt100 presentation 5/10/2008
Graduate student Vadas Gintautas defends his
Ph.D. thesis successfully. 4/4/2008 Editorial on
mixed reality for Complexity 3/10/2008 Invited
speaker at the APS press conference at 11AM in
the press room in the New Orleans Convention
Center in room B2-2 at the APS March Meeting,
New Orleans, Louisiana
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Group activities since January 2007, continued
. 2/15/2008 Joined the editorial board of
Research Letters in Physics 2/1/2008 J. Xu, A.
Hubler Detecting quasiperiodic structures with
double diffraction. Europhysics Letters 81,
16002 (2008). 1/3/2008-1/6/2008 Presentation at
Dynamics Days 2008, Knoxville, TN 12/15/2007 A.
Hubler Homeopathic Dynamical Systems, Complexity.
11/30/2007 Talk at Multicultural Youth
Conference Talk with many lecture demos in
Loomis, UIUC 11/15/2008 V. Gintautas, G.
Foster, and A. W. Hubler Resonant forcing of
select degrees of freedom of multidimensional
chaotic map dynamics , J. Stat. Phys. 130 (3),
617-629 (2008) 10/28/2007-10/31/2007, ICCS
2007, Boston. Invited overview talk for the
opening session. 10/31/2007-11/4/2007, Invited
to Annual Business Network and Board of Trustees'
Symposium of the Santa Fe Institute, Santa Fe,
NM. 10/22/2007-10/25/2007 Invited talk at
Network Science Workshop, West Point, NY.
10/11/2007-10/13/2007 Invited to Wolfram
Technology Conference 2007. 9/24/2007-9/27/2007
Invited talk at International Conference on
Applications in Nonlinear Dynamics, organized by
ONR, held at Poipu Beach, Hawaii. 9/1/2008 W C.
Strelioff, J. Crutchfield, A. Hubler k-th Order
Markov Chains Bayesian Inference, Model
Comparison, Entropy Rate, and Out-of-class
Modeling. Phys. Rev. E 76, 011106 (2007).
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Group activities since January 2007, continued
. 7/15/2007 A. Hubler and K. C. Phelps Guiding a
self-adjusting system through chaos. Complexity
,13(2) 10 (2007). 7/13/2007-7/15/2007 NKS 2007
conference, Burlington, VT, invited
talk 6/1/2007-/6/30/2007 Complex Systems Summer
School 2007, 2 lectures and 13 labs 5/20/2007 A.
Hubler Understanding Complex Systems Defining an
abstract concept. Complexity 12(5), 5-9(2007).
4/20/2007 A. Gerig and A. Hubler Chaos in a
one-dimensional compressible flow. Phys. Rev. E
75, 045202 (2007). 5/15/2008-5/18/2007 Chair
UCS2007 at UIUC, gt100 presentation 4/1/2007 V.
Gintautas and A. Hubler Experimental evidence for
mixed reality states in an interreality system.
Phys. Rev. E 75, 057201 (2007). 2/21/2007 Invited
talk APS March meeting in Denver, CO. 3/1/2007
A. Hubler, G. Foster and K. C. Phelps Managing
chaos Thinking out of the box. Complexity
12(3), 10-13 (2007). 2/22/2007-2/25/2007
Coordination Dynamics, Florida Atlantic
University, Boca Raton. 2/1/2007 M. S. Singleton
and A. Hubler Learning rate and attractor size of
the single- layer perceptron. Phys. Rev. E 75,
026704 (2007). 1/15/2007 G. Foster, A. Hubler,
and K. Dahmen Resonant forcing of
multidimensional chaotic map dynamics. Phys.
Rev. E 75, 036212 (2007). 1/11/2007-1/12/2007
Complex Systems Engineering, RAND Corporation,
St. Monica. 1/3/2007-1/6/2007 Dynamics Days
2007, Boston University, Boston, MA .
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And then there is our work on e-learning ...
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And then there is our work on e-learning ...
strengthening the reasoning skills parsing
free response. http//server10.how-why.com/blog/
?
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• Conclusion
• Complex Systems _at_ illinois has a leadership role
• - Many publication in A-level journals
• Annual conference at the UIUC Physics department
  with more than 100 presentations
• Editorial office of Wiley journal Complexity,
  the leading journal in the field
• APS monthly News Letter, APS press conference
• High-risk high-payoff projects strong public
  interest
• Ethnically diverse group, successful Ph.D.s.
• Future - Have more NSF funds flow in our
  direction. Complex Systems is overused -gt be
  more specific.
• - Better internal networking.
• Thank you!