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Journal Paper Accepted at the IEEE Transactions on Intelligent Transportation Systems: An Axiomatic Design Approach to Passenger Itinerary Enumeration in Reconfigurable Transportation Systems

The LIINES is happy to announce that The IEEE Transactions on Intelligent Transportation Systems has accepted our recent paper entitled:  An Axiomatic Design Approach to Passenger Itinerary Enumeration in Reconfigurable Transportation Systems for publication. The paper is authored by Dr. Asha Viswanath, Edgar Eugenio Samano Baca and Prof. Amro M. Farid.

The topic of path enumeration in a transportation network has a long history.  As one can easily imagine, we have been asking: “How many different ways can I get from here to there?”  for a very long time.  The question is fundamental to many operations research problems and has new applications in the resilience of infrastructure systems.  So why a new approach to such an old problem?

Well, as the paper explains, the traditional graph theoretic based method lacks in four ways:

  1. it does not explicitly describe the different potentially redundant modes of transport.
  2. it does not explicitly address the implicit functions of parking, loading/unloading, or sitting at an intersection.  Naturally, if these “null-processes” were somehow unavailable you might be stuck along your path for a very long time.
  3. given its highly abstracted nature, traditional graph theoretic methods do not integrate well with existing engineering design methodologies.
  4. it does not explicitly describe changes or reconfigurations to the transportation network structure in real-time and hence has limited application to the design of real-time reconfigurable transportation systems.

Instead, this paper presents a passenger itinerary enumeration approach based upon Prof. Nam Suh’s axiomatic design theory for large flexible systems.  Here, the system form and function are both explicitly described to overcome all of the weaknesses mentioned above.  The work has immediate relevance to transportation systems that require real-time switching decisions in their network structure.  Furthermore, many transportation system life cycle properties functionally depend on path enumeration.

Further applications of this work can already be found on the LIINES publication page: http://amfarid.scripts.mit.edu

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LIINES Website: http://amfarid.scripts.mit.edu

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Prof. Amro M. Farid presents Reconfigurable Manufacturing System Research at IEEE Systems, Man and Cybernetics Conference in Manchester, UK

A Reconfigurable manufacturing system is a system that is designed at the outset for rapid change in structure, as well as in hardware and software components, in order to quickly adjust production capacity and functionality within a part family in response to sudden changes in market or regulatory requirements.  The challenge in the design of such systems is how to enable such reconfigurations and why.   One piece in the design puzzle is production path enumeration.  On Wednesday October 16th, Prof. Amro M. Farid presented his latest work on Reconfigurable Manufacturing Systems at the IEEE Systems Man and Cybernetics Conference, Manchester UK.  This paper entitled:  “An Axiomatic Design Approach to Non-Assembled Production Path Enumeration in Reconfigurable Manufacturing Systems”  combines Axiomatic Design for Large Flexible Systems with graph theory to present novel approaches to the design of reconfigurable manufacturing systems.

Full text of the paper and previous work may be found through the LIINES Website  publications page under paper code [RMS-C08].

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LIINES Websitehttp://amfarid.scripts.mit.edu

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Research Theme Highlight Part III: Transportation Electrification Systems

The Laboratory for Intelligent Integrated Networks of Engineering Systems maintains a research program composed of four complementary themes.  In the fourth of a four part series on the LIINES website,  the laboratory’s Transportation Electrification Systems is highlighted.  This work has produced in Abu Dhabi the first full-scale technical feasibility study for electric vehicles and has gone on to produce a hybrid dynamic system model of a Transportation Electricity Nexus as a single integrated system.

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LIINES Website: http://amfarid.scripts.mit.edu

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Research Theme Highlight Part IV: Electrified Transportation Systems

The Laboratory for Intelligent Integrated Networks of Engineering Systems maintains a research program composed of four complementary themes.  In the fourth of a four part series on the LIINES website,  the laboratory’s Energy-Transportation Nexus Theme is highlighted.  This work has produced in Abu Dhabi the first full-scale technical feasibility study for electric vehicles and has gone on to produce a hybrid dynamic system model of an Energy-Transportation Nexus as a single integrated system.

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LIINES Website: http://amfarid.scripts.mit.edu

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The 4 R’s of an Advanced Grid: Resiliency, Reliability, Response & Repair

In this smartgridnews article, Doug Housseman argues that an advanced grid actually requires 4 R’s:  Resiliency, Reliability, Response & Repair.  The four properties are defined and rationalized for the future grid.

 

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LIINES Websitehttp://amfarid.scripts.mit.edu

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How Unsynchronized Metronomes are the like the power grid.

If you ever wondered how the power grid works with all of its oscillations and attempts to synchronize power generation and power demand over such a wide area, consider this:

32 Metronomes synchronize together on their own over the span of 5 minutes.  Truly remarkable.

In much the same way, synchronous generators and motors all over the power grid can eventually find synchronicity — that is if you wait long enough without disturbing them.  But then if you can’t wait that long then…well…smart grid of course.

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LIINES Websitehttp://amfarid.scripts.mit.edu

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IEEE Spectrum Features LIINES Research on Power Grid Enterprise Control Systems

Following the recent publication of the 2013 September Edition of the IEEE Smart Grid Newsletter where Prof. Amro M. Farid advocates the concept of power grid enterprise control, the IEEE Spectrum Magazine has also promoted the concept amongst its readership.  There, Bill Sweet discusses Power Grid Enterprise Control in the context of “Completely Self-Controlled Power Systems“.

Further publication on the topic can be found on the LIINES Website under the Smart Power Grids research page.

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LIINES Websitehttp://amfarid.scripts.mit.edu

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LIINES Research on Power Grid Enterprise Control Systems Featured in IEEE Smart Grid Newsletter

Since the inception of LIINES, research in smart power grids has been a fundamental theme.  One important concept advocated by this work is power grid enterprise control; where the multiple layers of power operations and control are assessed and designed not just individually but together in a holistic fashion.  In the 2013 September Edition of the IEEE Smart Grid Newsletter, Prof. Amro M. Farid continues his advocacy of Power Grid Enterprise control.

Further publication on the topic can be found on the LIINES Website under the Smart Power Grids research page.

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LIINES Websitehttp://amfarid.scripts.mit.edu

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Research Theme Highlight Part III: Smart Power Grids

The Laboratory for Intelligent Integrated Networks of Engineering Systems maintains a research program composed of four complementary themes.  In the third of a four part series on the LIINES website,  the laboratory’s Smart Power Grid Research Theme is highlighted.  This work proposes the concept of Power Grid Enterprise Control as means of designing and assuring the holistic dynamic properties of power grids.

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LIINES Website: http://amfarid.scripts.mit.edu

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Research Theme Highlight Part I: Smart Power Grids

The Laboratory for Intelligent Integrated Networks of Engineering Systems maintains a research program composed of four complementary themes.  In the third of a four part series on the LIINES website,  the laboratory’s Smart Power Grid Research Theme is highlighted.  This work proposes the concept of Power Grid Enterprise Control as means of designing and assuring the holistic dynamic properties of power grids.

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LIINES Website: http://amfarid.scripts.mit.edu

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