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		<title>Grabbe et al 2009b - Revision history</title>
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		<updated>2026-04-18T18:35:34Z</updated>
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		<title>Scipediacontent: Scipediacontent moved page Draft Content 534010316 to Grabbe et al 2009b</title>
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				<updated>2021-02-01T22:47:32Z</updated>
		
		<summary type="html">&lt;p&gt;Scipediacontent moved page &lt;a href=&quot;/public/Draft_Content_534010316&quot; class=&quot;mw-redirect&quot; title=&quot;Draft Content 534010316&quot;&gt;Draft Content 534010316&lt;/a&gt; to &lt;a href=&quot;/public/Grabbe_et_al_2009b&quot; title=&quot;Grabbe et al 2009b&quot;&gt;Grabbe et al 2009b&lt;/a&gt;&lt;/p&gt;
&lt;table class=&quot;diff diff-contentalign-left&quot; data-mw=&quot;interface&quot;&gt;
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				&lt;td colspan='1' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan='1' style=&quot;background-color: white; color:black; text-align: center;&quot;&gt;Revision as of 22:47, 1 February 2021&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan='2' style='text-align: center;' lang='en'&gt;&lt;div class=&quot;mw-diff-empty&quot;&gt;(No difference)&lt;/div&gt;
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		<author><name>Scipediacontent</name></author>	</entry>

	<entry>
		<id>https://www.scipedia.com/wd/index.php?title=Grabbe_et_al_2009b&amp;diff=199064&amp;oldid=prev</id>
		<title>Scipediacontent: Created page with &quot; == Abstract ==   generalized approach is proposed to support integrated traffic flow management decision making studies at both the U.S. national and regional levels. It can...&quot;</title>
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				<updated>2021-02-01T22:47:28Z</updated>
		
		<summary type="html">&lt;p&gt;Created page with &amp;quot; == Abstract ==   generalized approach is proposed to support integrated traffic flow management decision making studies at both the U.S. national and regional levels. It can...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&lt;br /&gt;
== Abstract ==&lt;br /&gt;
&lt;br /&gt;
 generalized approach is proposed to support integrated traffic flow management decision making studies at both the U.S. national and regional levels. It can consider trade- offs between alternative optimization and heuristic based models, strategic versus tactical flight controls, and system versus fleet preferences. Preliminary testing was accomplished by implementing thirteen unique traffic flow management models, which included all of the key components of the system and conducting 85, six-hour fast-time simulation experiments. These experiments considered variations in the strategic planning look-ahead times, the re- planning intervals, and the types of traffic flow management control strategies. Initial testing indicates that longer strategic planning look-ahead times and re-planning intervals result in steadily decreasing levels of sector congestion for a fixed delay level. This applies when accurate estimates of the air traffic demand, airport capacities and airspace capacities are available. In general, the distribution of the delays amongst the users was found to be most equitable when scheduling flights using a heuristic scheduling algorithm, such as ration-by-distance. On the other hand, equity was the worst when using scheduling algorithms that took into account the number of seats aboard each flight. Though the scheduling algorithms were effective at alleviating sector congestion, the tactical rerouting algorithm was the primary control for avoiding en route weather hazards. Finally, the modeled levels of sector congestion, the number of weather incursions, and the total system delays, were found to be in fair agreement with the values that were operationally observed on both good and bad weather days.&lt;br /&gt;
&lt;br /&gt;
&lt;br /&gt;
== Original document ==&lt;br /&gt;
&lt;br /&gt;
The different versions of the original document can be found in:&lt;br /&gt;
&lt;br /&gt;
* [http://dx.doi.org/10.2514/6.2009-6008 http://dx.doi.org/10.2514/6.2009-6008]&lt;br /&gt;
&lt;br /&gt;
* [http://www.aviationsystemsdivision.arc.nasa.gov/publications/2009/AF2009177.pdf http://www.aviationsystemsdivision.arc.nasa.gov/publications/2009/AF2009177.pdf]&lt;br /&gt;
&lt;br /&gt;
* [http://arc.aiaa.org/doi/pdf/10.2514/6.2009-6008 http://arc.aiaa.org/doi/pdf/10.2514/6.2009-6008],&lt;br /&gt;
: [http://dx.doi.org/10.2514/6.2009-6008 http://dx.doi.org/10.2514/6.2009-6008]&lt;br /&gt;
&lt;br /&gt;
* [https://www.aviationsystemsdivision.arc.nasa.gov/publications/2009/AF2009177.pdf https://www.aviationsystemsdivision.arc.nasa.gov/publications/2009/AF2009177.pdf],&lt;br /&gt;
: [http://www.aviationsystemsdivision.arc.nasa.gov/publications/2009/AF2009177.pdf http://www.aviationsystemsdivision.arc.nasa.gov/publications/2009/AF2009177.pdf],&lt;br /&gt;
: [https://ntrs.nasa.gov/search.jsp?R=20100036839 https://ntrs.nasa.gov/search.jsp?R=20100036839],&lt;br /&gt;
: [https://arc.aiaa.org/doi/pdf/10.2514/6.2009-6008 https://arc.aiaa.org/doi/pdf/10.2514/6.2009-6008],&lt;br /&gt;
: [https://trid.trb.org/view.aspx?id=1094754 https://trid.trb.org/view.aspx?id=1094754],&lt;br /&gt;
: [http://enu.kz/repository/2009/AIAA-2009-6008.pdf http://enu.kz/repository/2009/AIAA-2009-6008.pdf],&lt;br /&gt;
: [https://repository.exst.jaxa.jp/dspace/handle/a-is/249962 https://repository.exst.jaxa.jp/dspace/handle/a-is/249962],&lt;br /&gt;
: [https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100036839_2010028975.pdf https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20100036839_2010028975.pdf],&lt;br /&gt;
: [https://core.ac.uk/display/103860620 https://core.ac.uk/display/103860620],&lt;br /&gt;
: [https://academic.microsoft.com/#/detail/2012379961 https://academic.microsoft.com/#/detail/2012379961]&lt;/div&gt;</summary>
		<author><name>Scipediacontent</name></author>	</entry>

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