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Qualitative Approach for Assessing Runoff Temporal Dependence Through Geometrical Symmetry

Santiago Zazo Del dedo, Hector Macian-Sorribes, Cristina Maria Sena Fael, Ana-María Garía-Martín, Jose-Luis Molina, Manuel P Pulido-Velazquez
2020 KnE Engineering  
The result is a dependence mitigation graph, whose analysis of its symmetry provides an innovative qualitative approach to assess time-dependency from a dynamic and continuous perspective against the classical  ...  Consequently, for a better understanding/knowledge of temporal alterations, it is crucial to develop new analytical strategies which are capable of capturing these modifications on its temporal behaviour  ...  Qualitative geometrical approach for time-dependence assessing According to temporal behavior shown by exemplary case studies belonging to Douro/Duero basin (Figure 3 ) a symmetry analysis was carried  ... 
doi:10.18502/keg.v5i6.7106 fatcat:wybmdmi7d5eipnk4p54ho5qrba

Applying temporal network analysis to the venture capital market

Xin Zhang, Ling Feng, Rongqian Zhu, H. Eugene Stanley
2015 European Physical Journal B : Condensed Matter Physics  
These results further deepen the understanding of the antiferromagnetic interaction which results in a geometric frustration for the model studied.  ...  Our work may provide a possible scenario to understand the pairing symmetry of the heavy fermion superconductivity, which is the one of active issues in very recent years.  ...  Author contribution statement All authors made equal contributions to the study and this manuscript.  ... 
doi:10.1140/epjb/e2015-60525-3 fatcat:4x3kva7dbvgjbegeecqyi6qgze

Two populations of coupled quadratic maps exhibit a plentitude of symmetric and symmetry broken dynamics

Ralph G. Andrzejak, Giulia Ruzzene, Eckehard Schöll, Iryna Omelchenko
2020 Chaos  
We numerically study a network of two identical populations of identical real-valued quadratic maps.  ...  The maps in individual populations can be synchronized or desynchronized. Their temporal evolution can be periodic or aperiodic.  ...  Such a coexistence of qualitatively different dynamics for different random initial conditions is not a peculiarity of setting 1. We found it for many of the cases we studied.  ... 
doi:10.1063/5.0002272 pmid:32237754 fatcat:4pyd5xjyqvfzffeprzg2vfcp6a

Irregular synchronous activity in stochastically-coupled networks of integrate-and-fire neurons

Juan K Lin, Klaus Pawelzik, Udo Ernst, Terrence J Sejnowski
1998 Network  
We investigate the spatial and temporal aspects of firing patterns in a network of integrate-and-fire neurons arranged in a one-dimensional ring topology.  ...  With perfect precision in the couplings, the attractors of activity in the network occur at every position in the ring.  ...  In the present study, spatial and temporal aspects of firing patterns in a simple network model of integrate-and-fire neurons is examined in the context of rate coding and temporal coding.  ... 
doi:10.1088/0954-898x_9_3_004 pmid:9861994 fatcat:ur3twcbkk5asbfsnbixm6nsqem

Deriving the Manifestly Qualitative World from a Pure-Power Base: Light-like Networks

Sharon R. Ford
2011 Philosophia Scientiæ  
A consequence of LNA is that, from the frame of reference of any network, other networks appear 'massy'-persisting as the fermionic constituents of qualitative objects. 3 In this light, fundamental levels  ...  The principle of symmetry figures prominently in modern physics. A symmetry is the invariance of an object or system to a transformation.  ... 
doi:10.4000/philosophiascientiae.690 fatcat:dgroshsy3zasnmow56khnp6hbq

Allen's Hourglass: Probabilistic Treatment of Interval Relations

Sergios Petridis, Georgios Paliouras, Stavros J. Perantonis
2010 2010 17th International Symposium on Temporal Representation and Reasoning  
The paper is motivated by the need to handle robustly the uncertainty of temporal intervals, e.g. as it occurs in automated event detection in video streams.  ...  Based on this mapping, we define two sets of primitive interval relations in terms of the relative positioning and relative size of intervals.  ...  This paper has been supported by the EU, in the context of the CASAM project (Contract number FP7-217061, Web site: www.casam-project.eu).  ... 
doi:10.1109/time.2010.9 dblp:conf/time/PetridisPP10 fatcat:ryqh4yac25hmza2stl6rpvuz5a

Generative modelling of regulated dynamical behavior in cultured neuronal networks

Vladislav Volman, Itay Baruchi, Erez Persi, Eshel Ben-Jacob
2004 Physica A: Statistical Mechanics and its Applications  
The spontaneous activity of cultured in vitro neuronal networks exhibits rich dynamical behavior.  ...  Here, we study the cultured networks dynamical behavior utilizing a generative modelling approach.  ...  In the study of abiotic systems, quantitative comparison between simulations and experiments is much coveted, although in many cases insu cient knowledge limits the comparison to be only qualitative.  ... 
doi:10.1016/j.physa.2003.11.015 fatcat:irrqtz4edzgt7nr4maklybgkcq

Complex patterns arise through spontaneous symmetry breaking in dense homogeneous networks of neural oscillators

Rajeev Singh, Shakti N. Menon, Sitabhra Sinha
2016 Scientific Reports  
A schematic representation of a network of the Macaque brain regions (adapted from a recent study 20 ; see Methods for more details) is shown in Fig. 1(a) .  ...  The collective activity of such networks can result in complicated nodal dynamics, including temporal oscillations at several scales that are known to be functionally relevant 10, 25, 26 .  ...  This research was supported in part by the IMSc Complex Systems Project.  ... 
doi:10.1038/srep22074 pmid:26916700 pmcid:PMC4768139 fatcat:lkyb7zmoyvekfoqiolajmxowga

Abnormal laughter-like vocalisations replacing speech in primary progressive aphasia

Jonathan D. Rohrer, Jason D. Warren, Martin N. Rossor
2009 Journal of the Neurological Sciences  
Acoustic analysis of the vocalisations in two patients revealed abnormal motor features including variable note duration and inter-note interval, loss of temporal symmetry of laugh notes and loss of the  ...  Abnormal laughter-like vocalisations may be a hallmark of a subgroup in the PPA spectrum with impaired control and production of nonverbal vocal behaviour due to disruption of fronto-temporal networks  ...  This work was undertaken at UCLH/UCL who received a proportion of funding from the Department of Health's NIHR Biomedical Research Centres funding scheme.  ... 
doi:10.1016/j.jns.2009.04.021 pmid:19435636 pmcid:PMC2729814 fatcat:w3t3ogvjnne5vdoodr4vmt7mou

Networks of coupled oscillators: from phase to amplitude chimeras [article]

Tanmoy Banerjee, Debabrata Biswas, Debarati Ghosh, Eckehard Schoell,, Anna Zakharova
2018 arXiv   pre-print
We provide a qualitative explanation of the observed phenomena in the light of symmetry breaking bifurcation scenarios.  ...  We show that amplitude-mediated phase chimeras and amplitude chimeras can occur in the same network of nonlocally coupled identical oscillators.  ...  ACKNOWLEDGMENTS E.S. and A.Z. acknowledge the financial support by DFG in the framework of SFB 910.  ... 
arXiv:1808.08131v2 fatcat:sqr2wdfo7zaibicsnwqmetklja

Temporal Reasoning without Transitive Tables [article]

Sylviane R. Schwer
2007 arXiv   pre-print
Lots of models have been proposed in the litterature for representing such temporal information. All derive from a point-based or an interval-based framework.  ...  Representing and reasoning about qualitative temporal information is an essential part of many artificial intelligence tasks.  ...  Qualitative Temporal Objects and Relations in the binary algebra and their transitivity tables We examine qualitative temporal objects and relations inside the framework of relational algebra, as Ladkin  ... 
arXiv:0706.1290v1 fatcat:bdplrbxsbrg6pjp6l4nmmghl54

Semiring-Based Soft Constraints [chapter]

Stefano Bistarelli, Francesca Rossi
2008 Lecture Notes in Computer Science  
Since then, much work has been done to study, extend, and apply this formalism. This papers gives a brief summary of some of these research activities.  ...  The semiring-based formalism to model soft constraint has been introduced in 1995 by Ugo Montanari and the authors of this paper.  ...  A special thank We would really like to thank Ugo Montanari for the very interesting and exciting time spent working together on the subject of this paper and on other research issues.  ... 
doi:10.1007/978-3-540-68679-8_11 fatcat:2jbzqzkhdjhvhdxujvkyie3idq

Spatiotemporal Relations and Modeling Motion Classes by Combined Topological and Directional Relations Method

Nadeem Salamat, El-hadi Zahzah
2012 ISRN Machine Vision  
In this paper, we proposed a theory of spatio-temporal relations based on topological and orientation perspective.  ...  Motion events are the subclasses of spatiotemporal relations, where stable and unstable spatio-temporal topological relations and temporal order of occurrence of a primitive event play an important role  ...  In this method, interval temporal logic is used, and a primitive temporal interval is defined, the smallest interval where the relation does not change.  ... 
doi:10.5402/2012/872687 fatcat:woe4ubpe2zgs3ekm4cbs7jtn2i

Controlling chimera states via minimal coupling modification

Giulia Ruzzene, Iryna Omelchenko, Eckehard Schöll, Anna Zakharova, Ralph G. Andrzejak
2019 Chaos  
rst observed in 2002 by Kuramoto and Battogtokh who studied the dynamics of a ring-shaped network of nonlocally coupled oscillators. 1 A chimera state is formed when the oscillators spontaneously split  ...  In panel (e), we show the corresponding time averages of the spatial distributions C(l(t), ψ) of the LCG center position over the interval I 2 .  ...  Isele et al. conducted a study about control of the position of chimeras in networks of oscillatory FitzHugh-Nagumo units. 29 They introduced a barrier of excitable units in the network, which attracts  ... 
doi:10.1063/1.5097570 fatcat:qgdbn43k5zekno4yb2em2emlza

Chimera states for directed networks [article]

Patrycja Jaros, Roman Levchenko, Tomasz Kapitaniak, Yuri Maistrenko
2021 arXiv   pre-print
For a small network consisting of only three identical oscillators (cyclic triple), tiny chimera islands arise in the parameter space.  ...  We demonstrate that chimera behavior can be observed in ensembles of phase oscillators with unidirectional coupling.  ...  Data availability: The data that support the findings of this study are available from the corresponding author upon reasonable request.  ... 
arXiv:2106.06809v1 fatcat:rxxyx5fuyrgelmdp6bd7ubbpl4
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