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Browsing MIT Open Access Articles by Title

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  • Val Martin, M.; Ford, B.; Prenni, A. J.; Wiedinmyer, C.; Heald, Colette L. (Copernicus GmbH, 2013-08)
    We analyze the record of aerosol optical depth (AOD) measured by the MODerate resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite in combination with surface PM[subscript 2.5] to investigate the impact ...
  • Nurhati, Intan Suci; Cobb, Kim M.; Lorenzo, Emanuele Di (American Meteorological Society, 2011-06)
    Accurate projections of future temperature and precipitation patterns in many regions of the world depend on quantifying anthropogenic signatures in tropical Pacific climate against its rich background of natural variability. ...
  • Dewey, Dan; Figueroa-Feliciano, Enectali; Bastien, Fabienne A.; Sato, Kosuke; Rutherford, John Morton; Heine, Sarah Nicole Trowbridge; Canizares, Claude R. (IOP Publishing, 2013-05)
    We present the analysis of 21 bright X-ray knots in the Cassiopeia A supernova remnant from observations spanning 10 yr. We performed a comprehensive set of measurements to reveal the kinematic and thermal state of the ...
  • Chakrabarty, Deepto; Morgan, Edward H.; Hartman, Jacob M.; Patruno, Alessandro; Markwardt, Craig B.; van der Klis, Michiel; Wijnands, Rudy (IOP Publishing, 2009-08)
    The Rossi X-ray Timing Explorer has observed five outbursts from the transient 2.5 ms accretion-powered pulsar SAX J1808.4–3658 during 1998-2008. We present a pulse timing study of the most recent outburst and compare it ...
  • Sierchio, Jennifer M.; Rieke, G. H.; Su, K. Y. L.; Gaspar, Andras (IOP Publishing, 2014-03)
    We present a Spitzer MIPS study of the decay of debris disk excesses at 24 and 70 μm for 255 stars of types F4-K2. We have used multiple tests, including consistency between chromospheric and X-ray activity and placement ...
  • Kaur, Gurneet; Ajoy, Ashok; Cappellaro, Paola (IOP Publishing, 2013-09)
    Strategies to protect multi-qubit states against decoherence are difficult to formulate because of their complex many-body dynamics. A better knowledge of the decay dynamics would help in the construction of dynamical ...
  • Schlapfer, Markus Stefan; Buzna, Lubos (American Physical Society, 2012-01)
    While degree correlations are known to play a crucial role for spreading phenomena in networks, their impact on the propagation speed has hardly been understood. Here we investigate a tunable spreading model on scale-free ...
  • Williams, Brian Charles; Ono, Masahiro (Institute of Electrical and Electronics Engineers, 2010-12)
    This paper considers finite-horizon optimal control for multi-agent systems subject to additive Gaussian-distributed stochastic disturbance and a chance constraint. The problem is particularly difficult when agents are ...
  • Omidshafiei, Shayegan; Agha-mohammadi, Ali-akbar; Amato, Christopher; How, Jonathan P. (Institute of Electrical and Electronics Engineers (IEEE), 2015-05)
    he focus of this paper is on solving multi-robot planning problems in continuous spaces with partial observability. Decentralized Partially Observable Markov Decision Processes (Dec-POMDPs) are general models for multi-robot ...
  • Dames, Philip; Schwager, Mac; Kumar, Vijay; Rus, Daniela L. (2012-12)
    This paper proposes an algorithm for driving a group of resource-constrained robots with noisy sensors to localize an unknown number of targets in an environment, while avoiding hazards at unknown positions that cause the ...
  • Paull, Liam; Seto, Mae; Leonard, John Joseph (Institute of Electrical and Electronics Engineers (IEEE), 2014-09)
    Autonomous agents that can communicate and make relative measurements of each other can improve their collective localization accuracies. This is referred to as cooperative localization (CL). Autonomous underwater vehicle ...
  • Jaillet, Patrick; Chen, Jie; Low, Kian Hsiang; Tan, Colin Keng-Yan; Dolan, John; Sukhatme, Gaurav; Oran, Ali (Association for Uncertainty in Artificial Intelligence (AUAI), 2012-08)
    The problem of modeling and predicting spatiotemporal traffic phenomena over an urban road network is important to many traffic applications such as detecting and forecasting congestion hotspots. This paper presents a ...
  • Tsitsiklis, John N.; Zoumpoulis, Spyridon Ilias; Kreidl, Olivier Patrick (Institute of Electrical and Electronics Engineers (IEEE), 2011-02)
    We study a decentralized detection architecture in which each of a set of sensors transmits a highly compressed summary of its observations (a binary message) to a fusion center, which then decides on one of two alternative ...
  • Ahmed, Nisar; Luders, Brandon Douglas; Sample, Eric; Shah, Danelle; Campbell, Mark; How, Jonathan P.; Ponda, Sameera S. (American Institute of Aeromautics and Astronautics, 2011-08)
    This paper introduces a novel planning and estimation framework for maximizing infor- mation collection in missions involving cooperative teams of multiple autonomous vehicles and human agents, such as those used for ...
  • Alexandru, Andreea B.; Pequito, Sergio; Pappas, George J.; Jadbabaie-Moghadam, Ali (Institute of Electrical and Electronics Engineers (IEEE), 2016-12)
    In this paper, we study the problem of jointly retrieving the state of a dynamical system, as well as the state of the sensors deployed to estimate it. We assume that the sensors possess a simple computational unit that ...
  • Ponda, Sameera S.; Redding, Josh; Choi, Han-Lim; How, Jonathan P.; Vavrina, Matt; Vian, John (Institute of Electrical and Electronics Engineers, 2010-07)
    This paper extends the consensus-based bundle algorithm (CBBA), a distributed task allocation framework previously developed by the authors, to address complex missions for a team of heterogeneous agents in a dynamic ...
  • Varakantham, Pradeep; Adulyasak, Yossiri; Jaillet, Patrick (Association for the Advancement of Artificial Intelligence (AAAI), 2014-07)
    In this paper, we solve cooperative decentralized stochastic planning problems, where the interactions between agents (specified using transition and reward functions) are dependent on the number of agents (and not on the ...
  • Choi, Han-Lim; Whitten, Andrew Koo; How, Jonathan P. (Institute of Electrical and Electronics Engineers, 2010-07)
    This paper presents decentralized methods for allocating heterogeneous tasks to a network of agents with different capabilities, when the rules of engagement dictate various cooperation constraints. The new methods are ...
  • Whitten, Andrew K.; Johnson, Luke B.; How, Jonathan P.; Choi, Han-Lim (Institute of Electrical and Electronics Engineers (IEEE), 2011-06)
    This paper presents a decentralized algorithm that creates feasible assignments for a network of autonomous agents in the presence of coupled constraints. The coupled constraints address complex mission characteristics ...
  • Lisanti, Mariangela; Mishra-Sharma, Siddharth; Necib, Lina; Safdi, Benjamin Ryan (IOP Publishing, 2016-11)
    Astrophysical sources outside the Milky Way, such as active galactic nuclei and star-forming galaxies, leave their imprint on the gamma-ray sky as nearly isotropic emission referred to as the extragalactic gamma-ray ...
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