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Comput. Sci.</a> <a href="/?q=in%3A298819" title="Articles in this Issue">431, 165-180 (2012)</a>. </div> <div class="abstract">Summary: The stochastic calculus of looping sequences is a quantitative term rewrite formalism suitable to describe the evolution of microbiological systems, taking into account the speed of the described activities. In this paper, we propose an operational semantics for this calculus that considers the types of the species to derive the stochastic evolution of the system. The presence of positive and negative catalysers can modify these speeds. We claim that types provide an abstraction suitable to represent the interaction between elements without specifying exactly the element positions. Our claim is supported through an example modelling the lactose operon.</div> <div class="clear"></div> <br> <div class="citations"><div class="clear"><a href="/?q=rf%3A6039203">Cited in <strong>1</strong> Document</a></div></div> <div class="classification"> <h3>MSC:</h3> <table><tr> <td> <a class="mono" href="/classification/?q=cc%3A68Q42" title="MSC2020">68Q42</a> </td> <td class="space"> Grammars and rewriting systems </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A68Q55" title="MSC2020">68Q55</a> </td> <td class="space"> Semantics in the theory of computing </td> </tr><tr> <td> <a class="mono" href="/classification/?q=cc%3A92C42" title="MSC2020">92C42</a> </td> <td class="space"> Systems biology, networks </td> </tr></table> </div><div class="keywords"> <h3>Keywords:</h3><a href="/?q=ut%3Acalculus+of+looping+sequences">calculus of looping sequences</a>; <a href="/?q=ut%3Asystems+biology">systems biology</a>; <a href="/?q=ut%3Astochastic+semantics">stochastic semantics</a></div> <!-- Modal used to show zbmath metadata in different output formats--> <div class="modal fade" id="metadataModal" tabindex="-1" role="dialog" aria-labelledby="myModalLabel"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <button type="button" class="close" data-dismiss="modal" aria-label="Close"><span aria-hidden="true">×</span></button> <h4 class="modal-title" id="myModalLabel">Cite</h4> </div> <div class="modal-body"> <div class="form-group"> <label for="select-output" class="control-label">Format</label> <select id="select-output" class="form-control" aria-label="Select Metadata format"></select> </div> <div class="form-group"> <label for="metadataText" class="control-label">Result</label> <textarea class="form-control" id="metadataText" rows="10" style="min-width: 100%;max-width: 100%"></textarea> </div> <div id="metadata-alert" class="alert alert-danger" role="alert" style="display: none;"> <!-- alert for connection errors etc --> </div> </div> <div class="modal-footer"> <button type="button" class="btn btn-primary" onclick="copyMetadata()">Copy to clipboard</button> <button type="button" class="btn btn-default" data-dismiss="modal">Close</button> </div> </div> </div> </div> <div class="functions clearfix"> <div class="function"> <!-- Button trigger metadata modal --> <a type="button" class="btn btn-default btn-xs pdf" data-toggle="modal" data-target="#metadataModal" data-itemtype="Zbl" data-itemname="Zbl 1284.68317" data-ciurl="/ci/06039203" data-biburl="/bibtex/06039203.bib" data-amsurl="/amsrefs/06039203.bib" data-xmlurl="/xml/06039203.xml" > Cite </a> <a class="btn btn-default btn-xs pdf" data-container="body" type="button" href="/pdf/06039203.pdf" title="Zbl 1284.68317 as PDF">Review PDF</a> </div> <div class="fulltexts"> <span class="fulltext">Full Text:</span> <a class="btn btn-default btn-xs" type="button" href="https://doi.org/10.1016/j.tcs.2011.12.062" aria-label="DOI for “Typed stochastic semantics for the calculus of looping sequences”" title="10.1016/j.tcs.2011.12.062">DOI</a> </div> <div class="sfx" style="float: right;"> </div> </div> <div class="references"> <h3>References:</h3> <table><tr> <td>[1]</td> <td class="space">Barbuti, R.; Maggiolo-Schettini, A.; Milazzo, P.; Troina, A., A calculus of looping sequences for modelling microbiological systems, Fundamenta Informaticæ, 72, 1-3, 21-35 (2006) · <a href="/1101.92021" class="nowrap">Zbl 1101.92021</a></td> </tr><tr> <td>[2]</td> <td class="space">Barbuti, R.; Maggiolo-Schettini, A.; Milazzo, P.; Troina, A., Bisimulation congruences in the calculus of looping sequences, (International Colloquium on Theoretical Aspects of Computing (ICTAC’06). 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