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Browsing MIT Open Access Articles by Title

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  • Grogan, Paul Thomas; de Weck, Olivier L. (American Society of Civil Engineers, 2012-04)
    Future human space exploration will require large amounts of resources for shielding and building materials, propellants, and consumables. A space-based resource economy could produce, transport, and store resource at ...
  • Medard, Muriel; Sundararajan, Jay-Kumar; Sadeghi, Parastoo (Institute of Electrical and Electronics Engineers, 2009-06)
    We propose a new feedback-based adaptive coding scheme for a packet erasure broadcast channel. The main performance metric of interest is the delay. We consider two types of delay - decoding delay and delivery delay. ...
  • Sanchez, Alvaro; Gore, Jeff (Public Library of Science, 2013-04)
    The evolutionary spread of cheater strategies can destabilize populations engaging in social cooperative behaviors, thus demonstrating that evolutionary changes can have profound implications for population dynamics. At ...
  • Shrader, Brooke E.; Permuter, Haim (Institute of Electrical and Electronics Engineers, 2009-07)
    In this work, we find the capacity of a compound finite-state channel (FSC) with time-invariant deterministic feedback. We consider the use of fixed length block codes over the compound channel. Our achievability result ...
  • Roberts, John William; Manchester, Ian R.; Tedrake, Russell Louis (Institute of Electrical and Electronics Engineers, 2011-04)
    Reinforcement Learning offers a very general framework for learning controllers, but its effectiveness is closely tied to the controller parameterization used. Especially when learning feedback controllers for weakly stable ...
  • Ny, Jerome Le; Balakrishnan, Hamsa (American Institute of Aeronautics and Astronautics, 2011-05)
    This paper proposes a general modeling framework adapted to the feedback control of traffic flows in Eulerian models of the National Airspace System. It is shown that the problems of scheduling and routing aircraft flows ...
  • Mahadevan, L.; Ocko, Samuel Alan (American Physical Society, 2015-04)
    An active conducting medium is one where the resistance (conductance) of the medium is modified by the current (flow) and in turn modifies the flow, so that the classical linear laws relating current and resistance, e.g., ...
  • Polyanskiy, Yury; Poor, H. Vincent; Verdu, Sergio (Institute of Electrical and Electronics Engineers, 2011-08)
    Without feedback, the backoff from capacity due to non-asymptotic blocklength can be quite substantial for blocklengths and error probabilities of interest in many practical applications. In this paper, novel achievability ...
  • Liu, Ying; Chandrasekaran, Venkat; Anandkumar, Animashree; Willsky, Alan S. (Institute of Electrical and Electronics Engineers (IEEE), 2010-07)
    For Gaussian graphical models with cycles, loopy belief propagation often performs reasonably well, but its convergence is not guaranteed and the computation of variances is generally incorrect. In this paper, we identify ...
  • Mozdzanowska, Aleksandra L.; Weibel, R. E.; Hansman, Robert J., Jr. (Institute of Electrical and Electronics Engineers, 2009-01)
    The U.S. air transportation system faces substantial challenges in implementing new aviation information systems to meet future demand. These challenges need to be understood and addressed in order to successfully meet ...
  • Altafini, C.; Cappellaro, Paola; Cory, David G. (Institute of Electrical and Electronics Engineers, 2010-01)
    In NMR spectroscopy, the collective measurement is weakly invasive and its back-action is called radiation damping. The aim of this paper is to provide a control-theoretical analysis of the problem of suppressing this ...
  • Beaman, L.; Duflo, Esther; Pande, R.; Topalova, P. (American Association for the Advancement of Science (AAAS), 2012-01)
    Exploiting a randomized natural experiment in India, we show that female leadership influences adolescent girls’ career aspirations and educational attainment. A 1993 law reserved leadership positions for women in randomly ...
  • Velten, Andreas; Raskar, Ramesh; Wu, Di; Jarabo, Adrian; Barsi, Christopher; Gutierrez, Diego; Belen, Masia Corcoy; Joshi, Chinmaya Rajiv; Lawson, Matthew Everett; Bawendi, Moungi G.; Masia Corcoy, Belen (Association for Computing Machinery (ACM), 2013-07)
    We present femto-photography, a novel imaging technique to capture and visualize the propagation of light. With an effective exposure time of 1.85 picoseconds (ps) per frame, we reconstruct movies of ultrafast events at ...
  • Demirbas, Umit; Schmalz, Michael; Sumpf, Bernd; Erbert, Götz; Petrich, Gale S.; Kolodziejski, Leslie A.; Fujimoto, James G.; Kärtner, Franz X.; Leitenstorfer, Alfred (SPIE, 2012-06)
    Ti:Sapphire lasers could provide tunable femtosecond pulses in the 680-1180 nm region; however, due to the requirement of expensive green pump sources, its current cost sets a barrier to its widespread adoption. As an ...
  • Kartner, Franz X.; Chen, Li-Jin; Benedick, Andrew J.; Fendel, Peter; Li, Chih-Hao; Cramer, Claire E.; Chang, Guoqing; Furesz, Gabor; Glenday, Alexander G.; Phillips, David F.; Sasselov, Dimitar; Szentgyorgyi, Andrew; Walsworth, Ronald L. (Institute of Electrical and Electronics Engineers, 2009-08)
    High-resolution spectroscopy is a crucial tool for cosmology and the search for extrasolar planets. We present a laser comb with up to 40-GHz line spacing for use as a new spectrographic calibration source.
  • Temnov, Vasily V.; Klieber, Christoph; Thomay, Tim; Knittel, Vanessa; Leitenstorfer, Alfred; Makarov, Denys; Albrecht, Manfred; Bratschitsch, Rudolf; Nelson, Keith Adam (Nature Publishing Group, 2013-02)
    Fundamental interactions induced by lattice vibrations on ultrafast time scales have become increasingly important for modern nanoscience and technology. Experimental access to the physical properties of acoustic phonons ...
  • Byun, Hyunil; Sickler, Jason; Morse, Jonathan Lee; Chen, Jeff; Pudo, Dominik; Ippen, Erich P.; Kaertner, Franz X. (Springer Berlin/Heidelberg, 2010-03)
    We demonstrate a soliton fiber laser with 280-fs pulses at 408-MHz repetition rate, and a stretched-pulse regime fiber laser with 102-fs pulses at 234-MHz repetition rate. Both use saturable Bragg reflectors for mode-locking ...
  • Temnov, Vasily V.; Nelson, Keith Adam; Armelles, Gaspar; Cebollada, Alfonso; Thomay, Tim; Leitenstorfer, Alfred; Bratschitsch, Rudolf (Optical Society of America, 2009-05)
    We demonstrate femtosecond plasmonic interferometry with a novel geometry. The plasmonic microinterferometer consists of a tilted slit-groove pair. This arrangement allows for (i) interferometric measurements at a single ...
  • Temnov, Vasily V.; Nelson, Keith Adam; Armelles, Gaspar; Cebollada, Alfonso; Thomay, Tim; Leitenstorfer, Alfred; Bratschitsch, Rudolf (Institute of Electrical and Electronics Engineers, 2009-06)
    We measure the ultrafast electron dynamics in gold via ultrafast surface plasmon interferometry. A new plasmonic microinterferometer with tilted slit-groove pair is used to unambiguously determine changes of real and ...
  • Mou, Guobin; Yuan, Feng; Bu, Defu; Sun, Mouyuan; Su, Meng (Institute of Physics/American Astronomical Society, 2014-08)
    A pair of giant gamma-ray Bubbles has been revealed by Fermi-LAT. In this paper we investigate their formation mechanism. Observations have indicated that the activity of the supermassive black hole located at the Galactic ...
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