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Transition and Halting Modes in (Tissue) P Systems [chapter]

Rudolf Freund
2010 Lecture Notes in Computer Science  
A variety of different transition modes for tissue P systems as well as several halting modes currently are used in the area of membrane computing.  ...  In this paper, the definitions of the most important transition modes and halting modes are explained based on networks of cells, a general model for tissue P systems.  ...  Verlan, yet most of all to Gheorghe Pȃun, whose great ideas have inspired myself to develop many new variants of P systems.  ... 
doi:10.1007/978-3-642-11467-0_3 fatcat:vxuggoii5vbejm6szcr6qmtsge

Tissue P systems

Carlos Martín-Vide, Gheorghe Păun, Juan Pazos, Alfonso Rodríguez-Patón
2003 Theoretical Computer Science  
P system, which processes symbols in a multiset rewriting sense, in a net of cells.  ...  Moreover, in the case when each cell works in the maximal manner and it can excite all the cells to which it can send impulses, then one can easily solve the Hamiltonian Path Problem in linear time.  ...  communication for the minimal mode of using the rules, and, in the cooperative case, also when using the parallel or the maximal mode of processing the objects.  ... 
doi:10.1016/s0304-3975(02)00659-x fatcat:zsvxrwsyszf3fck3l3tlbxf5ni

Monodirectional Tissue P Systems With Promoters

Bosheng Song, Xiangxiang Zeng, Min Jiang, Mario J. Perez-Jimenez
2020 IEEE Transactions on Cybernetics  
Monodirectional tissue P systems are Turing universal with two cells, a maximal length 2, and at most one promoter for each symport rule, and working in the maximally parallel mode or with three cells,  ...  in the maximally parallel mode.  ...  or l k as using rules in the flat maximally parallel mode.  ... 
doi:10.1109/tcyb.2020.3003060 pmid:32649286 fatcat:oz2bvymnjjcurm7t6nee43ttli

A New Class of Symbolic Abstract Neural Nets: Tissue P Systems [chapter]

C. Martín-Vide, J. Pazos, G. Păun, A. Rodríguez-Patón
2002 Lecture Notes in Computer Science  
P system, which processes symbols in a multiset rewriting sense, in a net of cells similar to a neural net.  ...  Moreover, in the case when each cell works in the maximal manner and it can excite all the cells to which it can send impulses, then one can easily solve the Hamiltonian Path Problem in linear time.  ...  the rules, and, in the cooperative case, also when using the parallel or the maximal mode of processing objects.  ... 
doi:10.1007/3-540-45655-4_32 fatcat:mk75eiqnnbbbvml4plxuqsnzye

Timed Homeostasis Tissue-like P Systems with Evolutional Symport/antiport Rules

Yueguo Luo, Ping Guo, Yun Jiang, Ying Zhang
2020 IEEE Access  
Tissue-like P systems are a type of distributed parallel computing models inspired by actual biological tissue.  ...  Moreover, the time-free mode is introduced into this type of P systems, which makes the constructed systems more robust.  ...  TIMED P SYSTEMS If a P system works in the time-free mode, we call it timed P system.  ... 
doi:10.1109/access.2020.3005459 fatcat:keey2zopdjbnpgr5vsdpi7zydm

ω -P Automata with Communication Rules [chapter]

Rudolf Freund, Marion Oswald, Ludwig Staiger
2004 Lecture Notes in Computer Science  
., (Tissue) P systems working in the k-restricted minimally parallel derivation mode, in: E. Csuhaj-Varjú, R. Freund, M. Oswald, K.  ...  k-Restricted Minimally Parallel Transition Mode Definition For the k-restricted minimally parallel transition mode (min k ), we define Appl (Π, C , min k ) = {R | R ∈ Appl (Π, C , min) and |R ∩ R j |  ...  of a P automaton; taking the same construction for generating P systems, this is a challenging question -either we do not care about these "garbage" symbols or we have to add an output membrane.  ... 
doi:10.1007/978-3-540-24619-0_15 fatcat:7m63tnr4snee7pkwddcrpcpivm

Self-organized tissue mechanics underlie embryonic regulation [article]

Paolo Caldarelli, Alexander Chamolly, Olinda Alegria-Prevot, Jerome Gros, Francis Corson
2021 bioRxiv   pre-print
This mechanical feedback governs the persistent pattern of tissue flows that shape the embryo and steers the concomitant emergence of embryonic territories by modulating gene expression, ensuring the formation  ...  Analyzing intact and mechanically perturbed avian embryos, we show that the mechanical forces that drive embryogenesis self-organize in an analog of Turing's molecular reaction-diffusion model, with contractility  ...  Funding: PC was part of the Pasteur-Paris University (PPU) International PhD Program and obtained a 4 th -year fellowship from the Foundation pour la Recherche Medical (FRM).  ... 
doi:10.1101/2021.10.08.463661 fatcat:bq5nlh6ewjeidfqeh3siypdtkm

Simple mechanical cues could explain adipose tissue morphology [article]

Diane Peurichard, Fanny Delebecque, Anne Lorsignol, Corinne Barreau, Jacques Rouquette, Xavier Descombes, Louis Casteilla, Pierre Degond
2017 arXiv   pre-print
In this paper, we investigate this question on adipose tissue. Adipose tissue can represent 20 to 50% of the body weight.  ...  The mechanisms by which organs acquire their functional structure and realize its maintenance (or homeostasis) over time are still largely unknown.  ...  P(p t+∆t km = 1|p t km = 0) describes the transition probability for a transition of p t km from 0 to 1 during the time interval [t, t + ∆t] while P(p t+∆t km = 0|p t km = 1) refers to the transition probability  ... 
arXiv:1703.04729v2 fatcat:elqbtpu525fhzn32qasu6fnum4

Simple mechanical cues could explain adipose tissue morphology

D. Peurichard, F. Delebecque, A. Lorsignol, C. Barreau, J. Rouquette, X. Descombes, L. Casteilla, P. Degond
2017 Journal of Theoretical Biology  
Author Summary Because of the key role of adipose tissue in energy homeostasis and associated diseases, there is a great deal of interest in understanding the biology of this tissue.  ...  In this paper, we investigate this question on adipose tissue. Adipose tissue can represent 20 to 50% of the body weight.  ...  P (p t+ t km = 1 | p t km = 0) describes the transition probability for a transition of p t km from 0 to 1 during the time interval [ t , t + t ] while P (p t+ t km = 0 | p t km = 1) refers to the transition  ... 
doi:10.1016/j.jtbi.2017.06.030 pmid:28652001 fatcat:efwc5vmqe5afhggcm6fifesknu

- Tissue Optical Clearing [chapter]

2016 Advanced Biophotonics  
the scattering phase function p 0 (k i − k s ) = p(k i − k s , 0), b Γ(R 2 , R 1 ,t|k s , k i ) = Γ R l −1 s p(k i − k s ,t)δ (R 2 − R 1 ) b I + Γ 2 R l −2 s p(k s − k 21 ,t)× b Λ(R 21 )p(k 21 − k i ,  ...  in the so-called parallel polarization channels [147] .  ... 
doi:10.1201/b15256-21 fatcat:bjn4pqwtszg3lmwu24nckcjyci

Dynamics of wave fronts and filaments in anisotropic cardiac tissue [article]

Hans J.F.M. Dierckx
2015 arXiv   pre-print
We derive for the first time the covariant laws of motion for traveling wave fronts and scroll wave filaments in anisotropic excitable media such as cardiac tissue.  ...  The instability of scroll wave filaments has been linked to transition from ventricular tachycardia to fibrillation.  ...  Note that geodesics can be curves that either minimize or maximize the length between given endpoints.  ... 
arXiv:1511.03685v1 fatcat:atzrzq3fkffdvdcaxezfj3uxyu

Adapting a plant tissue model to animal development: introducing cell sliding into VirtualLeaf [article]

Henri B. Wolff, Lance A. Davidson, Roeland M.H. Merks
2019 arXiv   pre-print
They represent the junctions between three (or sometimes more) cells in confluent tissues as point particles, connected using structural elements that represent the cell boundaries.  ...  This is a suitable simplification for epithelial tissues, where the interfaces are typically under tension, but this simplification may not be appropriate for mesenchymal tissues or tissues that are under  ...  VirtualLeaf takes the CPM "off the lattice", with the current restriction that tissues must be confluent.  ... 
arXiv:1810.12212v2 fatcat:wmwwpan5prcdbpdhh4yrkztgtu

Pulsed Photoacoustic Techniques and Glucose Determination in Human Blood and Tissue [chapter]

Matti Kinnunen, Zuomin Zhao, Cameron
2008 Handbook of Optical Sensing of Glucose in Biological Fluids and Tissues  
The system has a broad laser transition linewidth, resulting in a wide tuning range. The Ti 3+ sapphire laser can be operated in CW or pulsed mode, with an emission range from 660 nm to 1180 nm.  ...  In liquid or soft tissue detection, the acoustic wave is longitudinal, so only vibrations in the thickness mode are considered.  ... 
doi:10.1201/9781584889755.ch14 fatcat:dyij4hoqrvabvmoffxud5bi3my

Molecular Rheology of Coniferous Wood Tissues

S. Chow
1973 Transactions of the Society of Rheology  
This energy transfer system of wood is further ^ facilitated by the existence of a systematic structure of wood microfibrils which permits a zone of gradual transition from high crystallinity to a diffuse  ...  Regardless of the form of external excitation (creep or stress relaxation), and the time of excitation (ramp-or step-loading), the basic pattern of the two-stage molecular motion was followed, while damping  ...  This means that the alignment of 1,4-0-p-D-linkage in latewoods is more parallel to the fibre axis than that of earlywoods.  ... 
doi:10.1122/1.549313 fatcat:45frrv5ilbduplt4ro7cogkvii

Post-Turing tissue pattern formation: Advent of mechanochemistry

Felix Brinkmann, Moritz Mercker, Thomas Richter, Anna Marciniak-Czochra, Philip K Maini
2018 PLoS Computational Biology  
In this study, we thus focus on the interplay between chemical and mechanical processes during tissue development.  ...  On one hand, based on recent experimental data, we develop new mechanochemical simulation models of evolving tissues, in which the full 3D representation of the tissue appears to be critical for obtaining  ...  Acknowledgments The authors greatly thank Prof. R Rannacher for scientific support. Author Contributions  ... 
doi:10.1371/journal.pcbi.1006259 pmid:29969460 pmcid:PMC6047832 fatcat:rk3k3noa6rc23mi5dmfmfkxttm
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