Výsledky vyhledávání - "Miroslav Kramar"

Quantitative measure of memory loss in complex spatiotemporal systems

Autor: Lenka Kovalcinova, Miroslav Kramar, Konstantin Mischaikow, Lou Kondic

Publikováno v: Chaos (Woodbury, N.Y.). 31(3)

To make progress in understanding the issue of memory loss and history dependence in evolving complex systems, we consider the mixing rate that specifies how fast the future states become independent of the initial condition. We propose a simple meas

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b440902e08ebc476bb2851859f3fdec
https://pubmed.ncbi.nlm.nih.gov/33810731

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Two approaches to quantification of force networks in particulate systems

Autor: Chao Cheng, Miroslav Kramar, Luis A. Pugnaloni, Rituparna Basak, Hu Zheng, Joshua E. S. Socolar, Ryan Kozlowski, C. Manuel Carlevaro, Lou Kondic

The interactions between particles in particulate systems are organized in `force networks', mesoscale features that bridge between the particle scale and the scale of the system as a whole. While such networks are known to be crucial in determining

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b2794d21127e47870a3c19100ccf6f66

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Machine learning approach to force reconstruction in photoelastic materials

Autor: Renat Sergazinov, Miroslav Kramar

Publikováno v: Machine Learning: Science and Technology. 2:045030

Photoelastic techniques have a long tradition in both qualitative and quantitative analysis of the stresses in granular materials. Over the last two decades, computational methods for reconstructing forces between particles from their photoelastic re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::39128170c4b03a779f502422b60677a5
https://doi.org/10.1088/2632-2153/ac29d5

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A Comparison Framework for Interleaved Persistence Modules

Autor: Shaun Harker, Rachel Levanger, Miroslav Kramar, Konstantin Mischaikow

Publikováno v: Journal of Applied and Computational Topology
Journal of Applied and Computational Topology, Springer, 2019, ⟨10.1007/s41468-019-00026-x⟩
Journal of Applied and Computational Topology, 2019, ⟨10.1007/s41468-019-00026-x⟩
J Appl Comput Topol

We present a generalization of the induced matching theorem of as reported by Bauer and Lesnick (in: Proceedings of the thirtieth annual symposium computational geometry 2014) and use it to prove a generalization of the algebraic stability theorem fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::05ea2f86a14716232cc8fdb39641525a
https://hal.inria.fr/hal-01757092/document

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Dynamics of silo deformation under granular discharge

Autor: Miroslav Kramar, Claudia Colonnello

Publikováno v: Physical Review E
Physical Review E, American Physical Society (APS), 2018
Physical Review E, 2018

International audience; We use Topological Data Analysis to study the post buckling behavior of laboratory scale cylindrical silos under gravity driven granular discharges. Thin walled silos buckle during the discharge if the initial height of the gr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1592fbdca82142918ccb959b825d3099
http://arxiv.org/abs/1807.09689

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Characterizing Granular Networks Using Topological Metrics

Autor: Konstantin Mischaikow, Miroslav Kramar, Robert Behringer, Lou Kondic, Jie Ren, Lenka Kovalcinova, Joshua A. Dijksman

Publikováno v: Physical Review E
Physical Review E, American Physical Society (APS), 2018, 97, pp.042903
Physical Review E, 2018, 97, pp.042903
Physical Review E, 97(4)
Physical Review E 97 (2018) 4

We carry out a direct comparison of experimental and numerical realizations of the exact same granular system as it undergoes shear jamming. We adjust the numerical methods used to optimally represent the experimental settings and outcomes up to micr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::01dad7c7b983c8c6fb561fbaca67774c
https://hal.inria.fr/hal-01757079v2/document

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Evolution of force networks in dense granular matter close to jamming

Autor: Miroslav Kramar, Konstanin Mischaikow, Lenka Kovalcinova, Lou Kondic

Publikováno v: EPJ Web of Conferences, Vol 140, p 15014 (2017)

When dense granular systems are exposed to external forcing, they evolve on the time scale that is typically related to the externally imposed one (shear or compression rate, for example). This evolution could be characterized by observing temporal e

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http://arxiv.org/abs/1704.02359

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Structure of force networks in tapped particulate systems of disks and pentagons. II. Persistence analysis

Autor: Lou Kondic, Luis A. Pugnaloni, Konstantin Mischaikow, Miroslav Kramar, C. Manuel Carlevaro

Publikováno v: SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
Repositorio Institucional Abierto (UTN)
Universidad Tecnológica Nacional
instacron:UTN

In the companion paper [Pugnaloni, Phys. Rev. E 93, 062902 (2016)10.1103/PhysRevE.93.062902], we use classical measures based on force probability density functions (PDFs), as well as Betti numbers (quantifying the number of components, related to fo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4132e82f685d927da8c1302e8b9f5bf
http://sedici.unlp.edu.ar/handle/10915/86772

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Oscillatory solutions of fourth order conservative systems via the Conley index

Autor: Jan Bouwe van den Berg, R. C. A. M. Vandervorst, Miroslav Kramar

Publikováno v: Journal of Differential Equations, 252(11), 6061-6098. Academic Press Inc.
van den Berg, G J B, Kramar, M & van der Vorst, R C A M 2012, ' Oscillatory solutions for fourth order conservative systems via the Conley index ', Journal of Differential Equations, vol. 252, no. 11, pp. 6061-6098 . https://doi.org/10.1016/j.jde.2012.02.021

In this paper we investigate periodic solutions of second order Lagrangian systems which oscillate around equilibrium points of center type. The main ingredients are the discretization of second order Lagrangian systems that satisfy the twist propert

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6a1a6cd5bd3c1c77524aa3186cfa9985
https://doi.org/10.1016/j.jde.2012.02.021

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The Order of Bifurcation Points in Fourth Order Conservative Systems via Braids

Autor: Jan Bouwe van den Berg, R. C. A. M. Vandervorst, Miroslav Kramar

Publikováno v: van den Berg, G J B, van der Vorst, R C A M & Kramar, M 2011, ' The order of bifurcation points in fourth order conservative systems via braids ', SIAM Journal on Applied Dynamical Systems, vol. 10, pp. 510-550 . https://doi.org/10.1137/100796558
SIAM Journal on Applied Dynamical Systems, 10, 510-550. Society of Industrial and Applied Mathematics

In second order Lagrangian systems bifurcati on branches of periodic solutions preserve certain topological invariants. These invariants are based on the observation that periodic orbits of a second order Lagrangian lie on 3-dimensional (noncompact)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::771d6e07cf3f838dbcf4c2d407269cd5
https://doi.org/10.1137/100796558

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