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Browsing MIT Open Access Articles by Title

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  • Tian, Hanqin; Lu, Chaoqun; Melillo, Jerry M.; Ren, Wei; Huang, Yao; Xu, Xiaofeng; Liu, Mingliang; Zhang, Chi; Chen, Guangsheng; Pan, Shufen; Liu, Jiyuan; Reilly, John M. (IOP Publishing, 2012-10)
    Chemical nitrogen (N) fertilizer has long been used to help meet the increasing food demands in China, the top N fertilizer consumer in the world. Growing concerns have been raised on the impacts of N fertilizer uses on ...
  • McLaughlin, Dennis; Kinzelbach, Wolfgang (American Geophysical Union (Wiley platform), 2015-07)
    The projected growth in global food demand until mid-century will challenge our ability to continue recent increases in crop yield and will have a significant impact on natural resources. The water and land requirements ...
  • Juanes, Ruben; MacMinn, Christopher W.; Szulczewski, Michael Lawrence (Springer Science + Business Media B.V., 2009-06)
    We study a sharp-interface mathematical model of CO[subscript 2] migration in deep saline aquifers, which accounts for gravity override, capillary trapping, natural groundwater flow, and the shape of the plume during the ...
  • Deits, Robin Lloyd Henderson; Tedrake, Russell Louis (Institute of Electrical and Electronics Engineers (IEEE), 2014-11)
    We present a new method for planning footstep placements for a robot walking on uneven terrain with obstacles, using a mixed-integer quadratically-constrained quadratic program (MIQCQP). Our approach is unique in that it ...
  • Mazloff, Matthew R.; Ferrari, Raffaele; Schneider, Tapio (American Meteorological Society, 2013-06)
    The Southern Ocean (SO) limb of the meridional overturning circulation (MOC) is characterized by three vertically stacked cells, each with a transport of about 10 Sv (Sv ≡ 10[superscript 6] m[superscript 3] s[superscript ...
  • Hogan, Neville (Springer-Verlag, 2006)
    The advantages and challenges of producing and controlling force with a mechanism like the human skeleton driven by actuators like mammalian muscles are considered. Some counter-intuitive subtleties of musculo-skeletal ...
  • Chen, Haoliang; Tkalich, Pavel; Rizzoli, Paola M.; Wei, Jun (Springer-Verlag, 2011-12)
    Non-tidal sea level anomalies (SLAs) can be produced by many different dynamical phenomena over many time scales, and they can induce serious damages in coastal regions especially during extreme events. In this work, we ...
  • Campbell, John Y.; Gigli, Stefano; Pathak, Parag (American Economic Association, 2010-07)
    This paper uses data on house transactions in the state of Massachusetts over the last 20 years to show that houses sold after foreclosure, or close in time to the death or bankruptcy of at least one seller, are sold at ...
  • Ratilal, Purnima; Jagannathan, Srinivasan; Horn, Berthold Klaus Paul; Makris, Nicholas (Institute of Electrical and Electronics Engineers (IEEE), 2011-06)
    We present methods for estimating forces which drive motion observed in density image sequences. Using these forces, we also present methods for predicting velocity and density evolution. To do this, we formulate and apply ...
  • Hutchinson, Ian H. (American Physical Society, 2011-08)
    The transverse force on a spherical charged grain lying in the plasma wake of another grain is analyzed to assess the importance of ion-drag perturbation, in addition to the wake-potential-gradient. The ion-drag perturbation ...
  • Patacchini, Leonardo; Hutchinson, Ian H. (IOP Publishing, 2011-05)
    The forces acting on a spherical conducting particle in a transversely flowing magnetized plasma are calculated in the entire range of magnetization and Debye length, using the particle code SCEPTIC3D (Patacchini and ...
  • Yuen, Shelten G.; Perrin, Douglas P.; Vasilyev, Nikolay V.; del Nido, Pedro J.; Howe, Robert D. (Institute of Electrical and Electronics Engineers (IEEE), 2010-09)
    The manipulation of fast-moving, delicate tissues in beating heart procedures presents a considerable challenge to the surgeon. A robotic force tracking system can assist the surgeon by applying precise contact forces to ...
  • Reynolds, David W.; Clark, David A.; Wilson, Charles F.; Cook, Lara (American Meteorological Society, 2012-10)
    During summer, marine stratus encroaches into the approach to San Francisco International Airport (SFO) bringing low ceilings. Low ceilings restrict landings and result in a high number of arrival delays, thus impacting ...
  • Chhaochhria, Pallav; Graves, Stephen C. (Taylor & Francis, 2013-11)
    We examine tactical planning for a serial manufacturing system that produces a product family with many process steps and low volumes. The system is subject to uncertainty in demand, in the supply of raw materials, and in ...
  • Cueto-Felgueroso, Luis; Juanes, Ruben (National Academy of Sciences (U.S.), 2013-12)
    Oil and natural gas from deep shale formations are transforming the United States economy and its energy outlook. Back in 2005, the US Energy Information Administration published projections of United States natural gas ...
  • Cappallo, Roger J.; Corey, Brian E.; de Oliveira-Costa, Angelica; Dillon, Joshua Shane; Ewall-Wice, Aaron Michael; Feng, L.; Goeke, Robert F.; Hewitt, Jacqueline N.; Kratzenberg, Eric W.; Lonsdale, Colin John; McWhirter, Stephen R.; Morgan, Edward H.; Neben, Abraham Richard; Rogers, Alan E. E.; Tegmark, Max Erik; Whitney, Alan R.; Williams, Christopher Leigh (IOP Publishing, 2015-04)
    Detection of 21 cm emission of H i from the epoch of reionization, at redshifts z > 6, is limited primarily by foreground emission. We investigate the signatures of wide-field measurements and an all-sky foreground model ...
  • Kovacs, Geza; Miller, Robert C. (Association for Computing Machinery (ACM), 2013-10)
    Foreign-language comics are potentially an enjoyable way to learn foreign languages. However, the difficulty of reading authentic material makes them inaccessible to novice learners. We present the Foreign Manga Reader, a ...
  • Bonstre, Jean-Francois; Campbell, Joseph P., Jr.; Shen, Wade; Campbell, William M.; Schwartz, Reva; Matrouf, Driss (Institute of Electrical and Electronics Engineers, 2009-03)
    Looking at the different points highlighted in this article, we affirm that forensic applications of speaker recognition should still be taken under a necessary need for caution. Disseminating this message remains one of ...
  • Levihn, Martin; Stilman, Mike; Kaelbling, Leslie P.; Lozano-Perez, Tomas (Institute of Electrical and Electronics Engineers (IEEE), 2013-11)
    We present a hierarchical planning and execution architecture that maintains the computational efficiency of hierarchical decomposition while improving optimality. It provides mechanisms for monitoring the belief state ...
  • Cobb, Alexander R.; Joosten, Hans; Glaser, Paul H.; Chua, Amy F. L.; Gandois, Laure; Kai, Fuu-Ming; Noren, Anders; Salim, Kamariah A.; Su'ut, N. Salihah H.; Harvey, Charles F.; Dommain, Rene (American Geophysical Union (AGU), 2015-04)
    Peatlands of Southeast Asia store large pools of carbon but the mechanisms of peat accumulation in tropical forests remain to be resolved. Patch dynamics and forest disturbance have seldom been considered as drivers that ...
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