<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-04-17T04:19:23Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2099.1/13135" metadataPrefix="marc">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:2099.1/13135</identifier><datestamp>2025-07-22T14:59:18Z</datestamp><setSpec>com_2072_1033</setSpec><setSpec>col_2072_452951</setSpec></header><metadata><record xmlns="http://www.loc.gov/MARC21/slim" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.loc.gov/MARC21/slim http://www.loc.gov/standards/marcxml/schema/MARC21slim.xsd">
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      <subfield code="a">dc</subfield>
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      <subfield code="a">Ferré Porta, Guillem</subfield>
      <subfield code="e">author</subfield>
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   <datafield ind2=" " ind1=" " tag="260">
      <subfield code="c">2011-09-22</subfield>
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      <subfield code="a">English: We describe a new model in order to study the properties of collections of self-propelled particles swimming in a two-dimensional fluid. Our model consist in two types of particles, the first interacting with each other with a soft potential and thus representing the fluid while the second type are self-propelled particles of biological nature capable of changing its orientation following the velocity field of the fluid. The results of the simulations show how a super-diffusive regime arises at large times for biological particles, in addition to having higher velocity correlation. Also, it is show how the biological particles have a tendency to form clusters and how these particles tend to look for the same orientation.</subfield>
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   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">Àrees temàtiques de la UPC::Física</subfield>
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   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">Mesoscopic phenomena (Physics)</subfield>
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   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">Particles (Nuclear physics)</subfield>
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      <subfield code="a">Swimmers</subfield>
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      <subfield code="a">Mesoscopic</subfield>
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      <subfield code="a">Super-diffusion</subfield>
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      <subfield code="a">Self-propelled</subfield>
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      <subfield code="a">Fenòmens mesoscòpics (Física)</subfield>
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      <subfield code="a">Partícules (Física nuclear)</subfield>
   </datafield>
   <datafield ind2="0" ind1="0" tag="245">
      <subfield code="a">Swimmers’ Collective Dynamics Modelization</subfield>
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