<?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>2026-04-14T02:04:19Z</responseDate><request verb="GetRecord" identifier="oai:www.recercat.cat:2117/110051" metadataPrefix="marc">https://recercat.cat/oai/request</request><GetRecord><record><header><identifier>oai:recercat.cat:2117/110051</identifier><datestamp>2025-07-17T07:16:47Z</datestamp><setSpec>com_2072_1033</setSpec><setSpec>col_2072_452950</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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   <datafield ind2=" " ind1=" " tag="042">
      <subfield code="a">dc</subfield>
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   <datafield ind2=" " ind1=" " tag="720">
      <subfield code="a">Xu, Yan</subfield>
      <subfield code="e">author</subfield>
   </datafield>
   <datafield ind2=" " ind1=" " tag="720">
      <subfield code="a">Prats Menéndez, Xavier</subfield>
      <subfield code="e">author</subfield>
   </datafield>
   <datafield ind2=" " ind1=" " tag="260">
      <subfield code="c">2017</subfield>
   </datafield>
   <datafield ind2=" " ind1=" " tag="520">
      <subfield code="a">This paper introduces a strategy to include linear&#xd;
holding into air traffic flow management (ATFM) initiatives,&#xd;
together with the commonly used ground holding and airborne&#xd;
holding measures. In this way, ATFM performance can be&#xd;
improved when handling delay assignment with uncertainty.&#xd;
Firstly, a trajectory generation method is presented, aiming at&#xd;
computing, per flight, the maximum linear holding realizable&#xd;
using the same fuel as the original nominal flight. This&#xd;
information is assumed to be computed and shared by the&#xd;
different airlines and it is then used to build a network&#xd;
ATFM model to optimally assign ATFM delays, in the scope&#xd;
of trajectory based operations. Hence, the best distribution&#xd;
of delay is optimized at given positions along the flight&#xd;
trajectory (combining the three holding practices together) and&#xd;
taking into account the cost of delay, especially in the fuel&#xd;
consumption. The problem is formulated as a mixed integer&#xd;
linear programming and solved with a commercially-of-the-shelf&#xd;
solver. An illustrative example is given, showing that under the&#xd;
circumstance of capacity recovered ahead of schedule, including&#xd;
linear holding contributes to a notable delay reduction compared&#xd;
to the case where only ground and/or airborne holding apply.</subfield>
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      <subfield code="a">Peer Reviewed</subfield>
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   <datafield ind2=" " ind1=" " tag="520">
      <subfield code="a">Postprint (published version)</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">Àrees temàtiques de la UPC::Aeronàutica i espai</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">Ait traffic control</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">linear holding</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">speed reduction</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">trajectory optimization</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">delay assignment</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">air traffic flow management</subfield>
   </datafield>
   <datafield tag="653" ind2=" " ind1=" ">
      <subfield code="a">Trànsit aeri -- Control</subfield>
   </datafield>
   <datafield ind2="0" ind1="0" tag="245">
      <subfield code="a">Including linear holding in air traffic flow management for flexible delay handling</subfield>
   </datafield>
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