Filters








129,952 Hits in 5.7 sec

Morphological organization of point-to-point transport in complex networks

Min-Yeong Kang, Geoffroy Berthelot, Liubov Tupikina, Christos Nicolaides, Jean-Francois Colonna, Bernard Sapoval, Denis S. Grebenkov
2019 Scientific Reports  
We investigate the structural organization of the point-to-point electric, diffusive or hydraulic transport in complex scale-free networks.  ...  Its exponent, -2, is determined by the multiplicative decrease of currents at successive branching points of a tree and is found to be independent of the network connectivity degree and resistance distribution  ...  organization of the point-to-point transport.  ... 
doi:10.1038/s41598-019-44701-6 pmid:31171797 pmcid:PMC6554344 fatcat:bw4dm5kmvzfdnhzo74xb5dodt4

Spatial mapping reveals multi-step pattern of wound healing in Physarum polycephalum

Felix K Bäuerle, Mirna Kramar, Karen Alim
2017 Journal of Physics D: Applied Physics  
Here, we follow the reorganization of Physarum polycephalum networks after severe wounding. Spatial mapping of the contraction changes in response to wounding reveal a multi-step pattern.  ...  Phases of increased activity alternate with cessation of contractions and stalling of flows, giving rise to coordinated transport and growth at the severing site.  ...  MK and FB acknowledge support by the IMPRS for Physics of Biological and Complex Systems.  ... 
doi:10.1088/1361-6463/aa8a21 fatcat:4m7rm5yj2nekbkxcypz4hynl4q

Mechanisms Inducing Parallel Computation in a Model of Physarum polycephalum Transport Networks

Jeff Jones
2015 Parallel Processing Letters  
morphological adaptation and network minimisation.  ...  In this paper we examine and catalogue individual low-level mechanisms which may be used to induce network formation and adaptation in a multi-agent model of P. polycephalum.  ...  The foraging plasmodium forms a protoplasmic tube network behind the growth front used to transport nutrients within the organism.  ... 
doi:10.1142/s0129626415400046 fatcat:r7vvzuqwsrdf5bxn7gyuoiqbiq

Fluid flows shaping organism morphology

Karen Alim
2018 Philosophical Transactions of the Royal Society of London. Biological Sciences  
A dynamic self-organized morphology is the hallmark of network-shaped organisms like slime moulds and fungi.  ...  It is therefore likely that not biological make-up but the physics of fluid flows within the tubular networks are critical to the self-organization of network morphology across an individual.  ...  Indeed, it might well be that precisely this added complexity due to the coupling is the key to have simple mechanisms based on fluid flow give rise to the complex dynamics of self-organization of morphology  ... 
doi:10.1098/rstb.2017.0112 pmid:29632264 fatcat:mos3bhzabjgj5gr42s7vrz7ujy

Applications of Multi-Agent Slime Mould Computing [article]

Jeff Jones
2015 arXiv   pre-print
The basis of the model is a simple dynamical pattern formation mechanism which exhibits self-organised formation and subsequent adaptation of collective transport networks.  ...  In this paper we give an overview of this multi-agent approach to unconventional computing.  ...  Dynamic Reconfiguration of Transport Network Method In the first approach [91] a method was devised to try and dynamically control in real-time the evolution of the emergent multi-agent transport networks  ... 
arXiv:1511.05774v1 fatcat:ovcatw4smzdblmbpdaddzwhkkq

Advances and challenges in shale oil development: A critical review

Qihong Feng, Shiqian Xu, Xiangdong Xing, Wei Zhang, Sen Wang
2020 Advances in Geo-Energy Research  
The fluid transport mechanisms through shale matrix are analyzed in terms of molecular dynamics, pore scale simulations, and experimental studies.  ...  Different from the conventional oil reservoirs, the primary storage space of shale is micro/nano pore networks.  ...  and Innovative Research Team in University (IRT1294), the Applied Fundamental Research Project of Qingdao (19-6-2-21-cg), and the Fundamental Research Funds for the Central Universities (18CX07006A).  ... 
doi:10.46690/ager.2020.04.06 fatcat:6zbbaakt3bcrtetwbd4xve6ypq

Emergence of behavior in a self-organized living matter network [article]

Philipp Fleig, Mirna Kramar, Michael Wilczek, Karen Alim
2020 bioRxiv   pre-print
Here, we show how locomotion and morphological adaptation behavior emerge from self-organized patterns of rhythmic contractions of the actomyosin lining of the tubes making up the network-shaped organism  ...  By mapping specific behaviors to states of active contractions, we provide the basis to understand behavior's complexity as a function of biomechanical dynamics.  ...  M.K. acknowledges the support of IMPRS for Physics of Biological and Complex Systems.  ... 
doi:10.1101/2020.09.06.285080 fatcat:6x67q7vt6jgsrbqadvyrrb55de

The Emergence and Dynamical Evolution of Complex Transport Networks from Simple Low-Level Behaviours [article]

Jeff Jones
2015 arXiv   pre-print
We present a low-level, bottom-up, approach to the modelling of emergent transport networks.  ...  Physarum networks also exhibit computationally desirable measures of transport efficiency in terms of overall path length, minimal connectivity and network resilience.  ...  A low-level, bottom-up approach to the modelling of complex transport networks was presented.  ... 
arXiv:1503.06579v1 fatcat:ngvrt3phyzgzjbpo3powgas4xm

Formation of traffic safety profile in central parts of the city and its informational protection

Olena Barabash, National Transport University, Ganna Weigang, Kateryna Komar, Banking University, Banking University
2021 Transport technologies  
in short terms and allows maximal using the possibilities of urban transport networks.  ...  Nowadays, there is a difference between European and domestic approaches to the functioning and organization of road networks, urban mobility, and effective use of the space of urbanized territories.  ...  Morphologic and system methods for the complex assessment of factors that impact traffic safety in central parts of the city were used to investigate cause-effect relationships.  ... 
doi:10.23939/tt2021.02.042 fatcat:uxl6cf4nmra6dgjxc7xentzzla

Solute Transport Along Stream and River Networks [chapter]

Michael N. Gooseff, Kenneth E. Bencala, Steven M. Wondzell
2008 River Confluences, Tributaries and the Fluvial Network  
Acknowledgements The authors are grateful to R. Runkel, D. Scott and A. Sukhodolov for their constructive reviews of this chapter, which provided much improvement, and to R.  ...  Any opinions, findings and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.  ...  point to significant advances in the coming years.  ... 
doi:10.1002/9780470760383.ch18 fatcat:kubynmpi3nblvfslmuez3u5hpe

Material Approximation of Data Smoothing and Spline Curves Inspired by Slime Mould [article]

Jeff Jones, Andrew Adamatzky
2015 arXiv   pre-print
Using a particle model of Physarum displaying emer- gent morphological adaptation behaviour we demonstrate how a minimal approach to collective material computation may be used to transform and summarise  ...  The material computation of spline curves also includes novel quasi-mechanical properties including unwind- ing of the shape between control points and a preferential adhesion to longer, straighter paths  ...  This tube network is used to distribute nutrients within the plasmodium. The organism is remarkable in that its complex behaviour is achieved without any specialised nervous tissue.  ... 
arXiv:1503.03264v1 fatcat:vyslepam55b73f5lzo4lu2mhfu

Stochastic modeling of molecular charge transport networks

Björn Baumeier, Ole Stenzel, Carl Poelking, Denis Andrienko, Volker Schmidt
2012 Physical Review B  
We develop a stochastic network model for charge transport simulations in amorphous organic semiconductors, which generalizes the correlated Gaussian disorder model to realistic morphologies, charge transfer  ...  The field dependence of the hole mobility of the amorphous organic semiconductor, tris-(8-hydroxyquinoline)aluminum, which was calculated using the stochastic network model, showed good quantitative agreement  ...  We are grateful to Kostas Daoulas and Pascal Kordt for a critical reading of the manuscript.  ... 
doi:10.1103/physrevb.86.184202 fatcat:bo5mgmj6g5hz3dfkdtknblviha

Multi-Dimensional Geometric Complexity in Urban Transportation Systems [article]

Farideddin Peiravian, Sybil Derrible
2015 arXiv   pre-print
Transportation networks serve as windows into the complex world of urban systems. By properly characterizing a road network, we can therefore better understand its encompassing urban system.  ...  It offers a robust and efficient methodology towards defining and extracting three relevant indicators of road networks: area, line, and point thresholds, through measures of their grid equivalents.  ...  This research was partly funded by the Department of Civil and Materials Engineering at the University of Illinois at Chicago.  ... 
arXiv:1507.03607v1 fatcat:nwsndzf3pneevofa3sci53xzm4

Understanding Topological and Spatial Attributes of Bus Transportation Networks in Cities of Chongqing and Chengdu

Dan Wan, Yong Huang, Jie Feng, Yaling Shi, Kairui Guo, Ran Zhang
2018 Mathematical Problems in Engineering  
It is critical to understand the characteristics of public transportation networks (PTNs).  ...  , respectively, from a mountainous city and a plain city in China, from the perspectives of basic statistical properties, types, connection properties, and spatial attributes, by using the complex networks  ...  Acknowledgments We also wish to thank Papergoing and AJE for their linguistic assistance during the preparation of this manuscript.  ... 
doi:10.1155/2018/4137806 fatcat:kjakide265fefcguyap5purkle

A molecular framework for proximal secondary vein branching in the Arabidopsis thaliana embryo [article]

Elizabeth Kastanaki, Noel Blanco-Tourinan, Alexis Sarazin, Alessandra Sturchler, Bojan Gujas, Antia Rodriguez-Villalon
2021 biorxiv/medrxiv   pre-print
Our work defines a genetic network conferring plasticity to Arabidopsis embryos to adapt the spatial configuration of vascular tissues to organ growth.  ...  The establishment of a closed vascular network in foliar organs is achieved through the coordinated specification of newly recruited procambial cells, their proliferation and elongation.  ...  This work was funded by the Swiss National Foundation (SNF_31003A_160201 to A.R.-V.).  ... 
doi:10.1101/2021.10.12.464048 fatcat:hx263s5rqzewjfjctzfp7hpuwe
« Previous Showing results 1 — 15 out of 129,952 results