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Browsing MIT Open Access Articles by Title

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  • Bierlaire, Michel; Osorio Pizano, Carolina; Flotterod, Gunnar (Elsevier, 2011-05)
    We present a dynamic network loading model that yields queue length distributions, accounts for spillbacks, and maintains a differentiable mapping from the dynamic demand on the dynamic queue lengths. The model also captures ...
  • Debelouchina, Galia Tzvetanova; Bayro, Marvin J.; van der Wel, Patrick C. A.; Caporini, Marc A.; Barnes, Alexander; Rosay, Melanie; Maas, Werner E.; Griffin, Robert Guy (Royal Society of Chemistry, The, 2010-05)
    Dynamic nuclear polarization (DNP) utilizes the inherently larger polarization of electrons to enhance the sensitivity of conventional solid-state NMR experiments at low temperature. Recent advances in instrumentation ...
  • Akbey, Umit; Franks, W. Trent; Linden, Arne; Lange, Sascha; Griffin, Robert Guy; van Rossum, Barth-Jan; Oschkinat, Harmut (Wiley-Blackwell Pubishers, 2010-08)
    For D's a jolly good fellow: Deuteration of proteins significantly increases the signal enhancements observed in dynamic nuclear polarization (DNP) magic-angle spinning (MAS) NMR experiments. In 13C CP-MAS spectra an ...
  • Michaelis, Vladimir K.; Markhasin, Evgeny; Daviso, Eugenio; Herzfeld, Judith; Griffin, Robert Guy (American Chemical Society (ACS), 2012-07)
    Oxygen-17-detected DNP NMR of a water/glycerol glass enabled an 80-fold enhancement of signal intensity at 82 K, using the biradical TOTAPOL. The >6000-fold savings in acquisition time enable [superscript 17]O–[superscript ...
  • Matsuki, Yoh; Maly, Thorsten; Ouari, Olivier; Karoui, Hakim; Le Moigne, Francois; Rizzato, Egon; Lyubenova, Sevdalina; Herzfeld, Judith; Prisner, Thomas; Tordo, Paul; Griffin, Robert Guy (John Wiley & Sons, Inc., 2009-06)
    A new polarizing agent with superior performance in dynamic nuclear polarization experiments is introduced, and utilizes two TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) moieties connected through a rigid spiro tether (see ...
  • Kiesewetter, Matthew K.; Smith, Albert A.; Corzilius, Bjorn; Griffin, Robert Guy; Swager, Timothy Manning (American Chemical Society (ACS), 2012-02)
    A new biradical polarizing agent, bTbtk-py, for dynamic nuclear polarization (DNP) experiments in aqueous media is reported. The synthesis is discussed in light of the requirements of the optimum, theoretical, biradical ...
  • Menache, Ishai; Ozdaglar, Asuman E.; Srikant, R.; Acemoglu, Daron (2009-07)
    We study dynamic models of online-advertising auctions in the Internet: advertisers compete for space on a web page over multiple time periods, and the web page displays ads in differentiated slots based on their bids and ...
  • Pham, Hubert; Paluska, Justin Mazzola; Saif, Umar; Stawarz, Christopher; Terman, Christopher J.; Ward, Stephen A. (Institute of Electrical and Electronics Engineers, 2009-05)
    We present a middleware platform for assembling pervasive applications that demand fault-tolerance and adaptivity in distributed, dynamic environments. Unlike typical adaptive middleware approaches, in which sophisticated ...
  • Walcott-Bryant, Aisha; Kaess, Michael; Johannsson, Hordur; Leonard, John Joseph (Institute of Electrical and Electronics Engineers (IEEE), 2013-05-16)
    Maintaining a map of an environment that changes over time is a critical challenge in the development of persistently autonomous mobile robots. Many previous approaches to mapping assume a static world. In this work we ...
  • Bahr, Alexander; Leonard, John Joseph; Martinoli, Alcherio (Institute of Electrical and Electronics Engineers (IEEE), 2012-10)
    Autonomous Underwater Vehicles (AUVs) are used for an ever increasing range of applications due to the maturing of the technology. Due to the absence of the GPS signal underwater, the correct estimation of its position is ...
  • Menache, Ishai; Orda, Ariel; Naor, Joseph (Seffi); Lewin-Eytan, Liane; Buchbinder, Niv (Institute of Electrical and Electronics Engineers, 2009-06)
    A major problem in wireless networks is coping with limited resources, such as bandwidth and energy. These issues become a major algorithmic challenge in view of the dynamic nature of the wireless domain. We consider in ...
  • Roozbehani, Mardavij; Dahleh, Munther A.; Mitter, Sanjoy K. (Institute of Electrical and Electronics Engineers, 2010-10)
    The paper proposes a mechanism for real-time pricing of electricity in smart power grids, with price stability as the primary concern. In previous publications the authors argued that relaying the real-time wholesale market ...
  • Lobel, Ruben; Perakis, Georgia (Airline Group of the International Federation of Operational Research Societies, 2011-10)
    In this paper we develop an approach to dynamic pricing that combines ideas from data-driven and robust optimization to address the uncertain and dynamic aspects of the problem. In our setting, a firm off ers multiple ...
  • Farias, Vivek F.; Van Roy, Benjamin (Institute for Operations Research and the Management Sciences, 2010-01)
    We study a problem of dynamic pricing faced by a vendor with limited inventory, uncertain about demand, aiming to maximize expected discounted revenue over an infinite time horizon. The vendor learns from purchase data, ...
  • Hogan, Neville; Sternad, Dagmar (Frontiers Research Foundation, 2013-06)
    Humans achieve locomotor dexterity that far exceeds the capability of modern robots, yet this is achieved despite slower actuators, imprecise sensors, and vastly slower communication. We propose that this spectacular ...
  • Gong, Nan-wei; Laibowitz, Mathew Joel; Paradiso, Joseph A. (Springer Science + Business Media B.V., 2010-11)
    This paper describes the design and implementation of a dynamic privacy management system aimed at enabling tangible privacy control and feedback in a pervasive sensor network. Our work began with the development of a ...
  • Ramakrishnan, Jagdish; Craft, David; Bortfeld, Thomas; Tsitsiklis, John N. (2012-03)
    We conduct a theoretical study of various solution methods for the adaptive fractionation problem. The two messages of this paper are as follows: (i) dynamic programming (DP) is a useful framework for adaptive radiation ...
  • Menache, Ishai; Altman, Eitan; Basar, Tamer; Tembine, Hamidou (Institute of Electrical and Electronics Engineers, 2009-10)
    We study a dynamic random access game with a finite number of opportunities for transmission and with energy constraints. We provide sufficient conditions for feasible strategies and for existence of Nash-Pareto solutions ...
  • Dean, Isabel; Wen, Bo; Wang, Grace I.; Delgutte, Bertrand (Society for Neuroscience, 2009-11)
    The auditory system operates over a vast range of sound pressure levels (100–120 dB) with nearly constant discrimination ability across most of the range, well exceeding the dynamic range of most auditory neurons (20–40 ...
  • Arfin, Scott Kenneth; Mandal, Soumyajit; Sarpeshkar, Rahul (Institute of Electrical and Electronics Engineers, 2009-06)
    We analyze and present an input gain-varying scheme for maximizing dynamic range in a well-known G[subscript m]-C bandpass filter by both minimizing noise for small input signals, and by achieving balanced swing levels at ...
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