 |
Visitors, seminars and focus weeks
We have invited around 20 colleagues for short visits. Each visit typically
included giving a
presentation; see
here for ASG talks.
In addition to seminar talks we have been organizing focus week meetings:
Our first focus week took place from 7 to 10 September, where 12 scientists gave
talks. Please see here for the programme of this meeting.
Our second focus week took place from 2 to 6 November, where 10
scientists gave
talks. Please see here for the programme of this
meeting.
In a way, we had a more informal third focus week from 22 to 27
November, with 8 scientists visiting the ASG and 4 of them giving
talks. Please see here for their talks.
Research projects (initiated by ASG activities and ongoing projects supported by the ASG)
|
F.Bartumeus, D.Boyer, A.V.Chechkin, L.Giuggioli, R.Klages, J.Pitchford, N.W.Watkins, position paper on statistical physics and anomalous dynamics
of foraging |
|
F.Bartumeus, D.Boyer, A.V.Chechkin, L.Giuggioli, R.Klages, J.Pitchford, N.W.Watkins, A toolbox for analysing foraging data from an anomalous dynamics perspective |
|
G.Blackburn, A.V.Chechkin, N.W.Watkins, R.Klages, Levy walks and optimality in foraging |
|
D.Boyer, D.Campos, F.Bartumeus, Foraging with memory in seabirds |
|
D.Boyer. A.Chechkin, Levy flights with resettings |
|
D. Boyer, L. Giuggioli, Localization of random walks by memory |
|
A.Cairoli, A.V.Chechkin, R.Klages, A.Baule, Frame invariance in anomalous dynamics |
|
R.L.Collings, S.Delius, A.James, J.S.Plank, J.Pitchford, penguin foraging
|
| P. Dieterich, O. Lindemann,
M.L. Moskopp, S. Tauzin, A. Huttenlocher, R. Klages, A.V. Chechkin,
A. Schwab, Asymmetric superdiffusion of neutrophils under chemotaxis |
| P.Dieterich, A.Schwab,
A.V.Chechkin, R.Klages, Anomalous fluctuations properties of cell migration under
chemical gradients |
|
S.Gupta, L.Giuggioli, Animal home range models: a comparative analysis
|
| R.Lloret-Cabot, R.Klages, A.V.Checkin, W.Ryu, F.Bartumeus, Anomalous dynamics in C.elegans |
| R.Klages, S.G.Gallegos, T.Hamalainen, J.Solanpaa, E.Rasanen, Diffusion
in soft periodic potentials |
|
N.W.Watkins, C.Franzke and S.C.Chapman, Hurst effect, `1/f' noises, and long range dependence
|
Articles (in alphabetical order)
published:
|
F.Bartumeus, Behavioural ecology cannot turn its back on Levy walk research;
Comment on "Liberating Levy walk research from the shackles of optimal
foraging" by A.M. Reynolds, Physics of Life Reviews 14, 84-86 (2015)
|
|
A. Bodrova, A.V. Chechkin, A.G. Cherstvy, R. Metzler, Quantifying
non-ergodic dynamics of
force-free granular gases, Physical Chemistry Chemical Physics 17
21791-21798 (2015) |
|
D.Boyer, I.Pineda, Slow Levy flights, Phys. Rev. E 93, 022103 (2015) |
|
K. Burnecki, A. Wylomanska, A.V. Chechkin, Discriminating between Light- and Heavy-Tailed
Distributions with Limit Theorem, PLoS One 10 (12), e0145604 (2015)
|
|
D.Campos, F.Bartumeus, E.P.Raposo, M.Vicenc, First-passage times in multiscale
random walks: The impact of movement scales on search efficiency,
Phys. Rev. E 92, 052702 (2015) |
| R.Klages, Extrem gesucht, Physik
Journal 14 (12), 22-23 (2015) (News and Views article, in German) |
|
M.Krummel, F.Bartumeus, A.Gerard, T-cell Migration, Search Strategies and
Mechanisms, Nature
Reviews Immunology 16 (2) (2016) |
|
I. Pavlyukevich, Y. Li, Y. Xu, and A.V. Chechkin, Directed
Transport Induced by Spatially Modulated Levy
Flights, Journal of Physics A - Math. Theor. 48, 495004 (2015) |
T. Sandev, A.V. Chechkin, H. Kantz, I.M. Sokolov,
R. Metzler, Distributed-order diffusion equations and multifractality:
Models and
solutions, Phys. Rev. E
92, 042117 (2015) |
|
R.M.Tromer, M.B.Barbosa MB, F.Bartumeus, J.Catalan, M.G.E.da Luz, E.P.Raposo,
G.M.Viswanathan, Inferring Levy walks from curved trajectories: A rescaling
method, Phys. Rev. E 92, 022147 (2015)
|
accepted, in print:
| R.Klages, Search for food of birds,
fish and insects, invited book chapter in: A.Bunde, J.Caro,
J.Kaerger, G.Vogl (Eds.), Diffusive Spreading in Nature, Technology
and Society. (Springer, Berlin); accepted (April 2016)
|
|
J.P. Taylor-King, R. Klages, S. Fedotov, R.A. Van Gorder, A Fractional
Diffusion Equation for an n-Dimensional Correlated Levy Walk,
Phys. Rev. E, accepted for publication, in print (June 2016) |
|
F.Bartumeus, D.Campos, R.Lloret-Cabot, V.Mendez, W.Ryu, J.Catalan, Foraging
under uncertainty: space use and search tradeoffs |
|
A.V. Chechkin, E. Gudowska-Nowak, M. Bier, Breaking Microscopic Reversibility with Levy Flights
|
|
T.Graves, R.Gramacy, N.W.Watkins, C.Franzke, A brief history of long
memory: Hurst, Mandelbrot and the road to ARFIMA, preprint arXiv:1406.6018
|
|
V.V. Palyulin, A.V. Chechkin, R. Klages, R. Metzler, Search reliability and search
efficiency of combined Levy-Brownian motion: long relocations mingled
with thorough local exploration, submitted to J. Phys. A:
Math. Gen. (April 2016) |
|
T. Sandev, A.V. Chechkin, A. Iomin, H. Kantz, R. Metzler, Generalized comb-like model with
slow and ultraslow diffusion |
|
Yu. Zhou, A.V. Chechkin, I.M. Sokolov, H. Kantz, Origin of temporal scaling behavior in earthquakes
|
|
N.W. Watkins, Mandelbrot's 1/f fractional renewal models of 1963-67: The non-ergodic
missing link between change points and long range dependence,
preprint arXiv:1603.00738
|
Talks
Conferences, workshops, symposia:
| D. Boyer, invited talk Slow Levy
flights and related path-dependent processes for animal movement
at the International Workshop on Nonlinearity, Nonequilibrium
and Complexity: Questions and Perspectives in Statistical Physics,
Nov. 29 - Dec. 4, 2015, Mexico City |
| D.Boyer, invited participation at the
workshop on Fission-Fusion Dynamics and Behavioral Flexibility:
Comparative Perspectives Casa Hamaca, Valladolid, Yucatan, Mexico, 20-23
October 2015 (nb: no formal talks, only working sessions)
|
| A.V.Chechkin,
talk at the conference Anomalous diffusion: wild and bad?, Bad Wildbad, Black Forest; 3/10-7/10/2015 |
| A.V. Chechkin, invited talk Scale-Invariant Brownian
Motion in Heterogeneous Media at the KIAS Workshop
on Anomalous Dynamics in Biological Systems, Korea Institute for
Advanced Study, Seoul; 3/9-5/9/2015 |
| R.Klages, invited talk at the symposium on
Fluctuation driven phenomena in non-equilibrium statistical
mechanics, Warwick, UK; 21-25/9/2015 |
| R.Klages,
talk at the conference Anomalous diffusion: wild and bad?, Bad Wildbad, Black Forest; 3/10-7/10/2015 |
| R.Klages,
invited plenary talk Search for Food of Birds,
Fish and Insects at the
conference Diffusion
Fundamentals VI, Dresden, Germany; 23/8-26/8/2015
[talk] |
Colloquia, seminars, lectures:
|
A.V.Chechkin, lecture for graduate students Fractional Kinetics and Levy Flights, Jagellonian University of Krakow, 30
November 2015 |
|
A.V.Chechkin, seminar Anomalous Langevin Equations and their use in Stochastic Climate
Theory MPIPKS, Climate Group Meeting, 18 November 2015 |
|
A.V.Chechkin, seminar Scale-invariant Markov Random Motions in Inhomogeneous and Non-stationary
Media, University of Padova, 09 November 2015 |
| A.V. Chechkin,
joint seminar in the groups "Statistical Physics and nonlinear dynamics" and
"Physics of complex systems and neurophysics"
at the Institute of Physics, Humboldt University of Berlin; 22/10/2015 |
| R.Klages, seminar in the
Ergodic Theory and Dynamical Systems group, Mathematics Institute,
University of Warwick, 17/11/2015 |
| R.Klages, colloquium at the Institute of Physics, University of Osnabrueck, 22/10/2015 |
| R.Klages,
seminar Statistical Physics and Anomalous Dynamics of Foraging, MPIPKS Dresden, 22 July 2015 [talk] |
| J.Pitchford, seminar Can Penguins Play
Chess? at the Department of Mathematics and
Statistics, University of Canterbury, New Zealand, 15/10/2015 |
| N.W.Watkins, seminar
Mandelbrot's
other model of 1/f noise: "Conditional stationarity" and
weak ergodicity breaking as seen from the mid sixties at the London
Mathematical Laboratory, 20/11/2015 |
Funding
6-months project grant awarded from
the Office
of Naval Research Global (USA/UK) to support a visiting guest scientist
(N.W.Watkins) and a project student (G.Blackburn) for our Advanced Study Group
(approx. US$27,700)
Collaborations at MPIPKS
| Dr. Eduardo Altmann |
Junior Research Group on Dynamical systems and
Social Dynamics |
complex systems,
nonlinear-deterministic and stochastic processes, statistical
properties of collective human activities like language |
| Dr. Benjamin Friedrich | staff scientist in the Division Biological Physics | mechanical and chemical regulation in biological systems |
| Prof. Holger Kantz |
research
group Nonlinear
Dynamics and Time Series Analysis |
complex dynamics, nonlinear stochastic
processes, (nonequilibrium) statistical physics, extreme events, time
series analysis |
| Dr. Vasily Zaburdaev |
research group Collective Dynamics of Cells |
biofilms, motility, random walks and
anomalous diffusion, chemotaxis |
The Complex System Reading Group at PKS organised a 1 1/2h session on Foraging and optimal search strategies on 12 August 2015 in which some relevant papers introducing to this topic were discussed.