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Browsing MIT Open Access Articles by Title

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  • Wu, Jianlan; Liu, Fan; Ma, Jian; Silbey, Robert J.; Cao, Jianshu (American Institute of Physics (AIP), 2012-11)
    Following the calculation of optimal energy transfer in thermal environment in our first paper [J. L. Wu, F. Liu, Y. Shen, J. S. Cao, and R. J. Silbey, New J. Phys.12, 105012 (2010)], full quantum dynamics and leading-order ...
  • Mohseni, Masoud; Lloyd, Seth; Shabani, Alireza; Rabitz, Herschel (American Physical Society, 2012-07)
    The fundamental physical mechanisms of energy transfer in photosynthetic complexes is not yet fully understood. In particular, the degree of efficiency or sensitivity of these systems for energy transfer is not known given ...
  • Leiserson, Charles E.; Li, Liyun; Maza, Marc Moreno; Xie, Yuzhen (Springer-Verlag, 2010-09)
    Minimizing the evaluation cost of a polynomial expression is a fundamental problem in computer science. We propose tools that, for a polynomial P given as the sum of its terms, compute a representation that permits a more ...
  • Ahn, Donghwan; Kimerling, Lionel C.; Michel, Jurgen (American Institute of Physics (AIP), 2011-10)
    We studied evanescent wave coupling behavior between low index-contrast upper-level waveguides and thin-film Si and Ge photodetectors on SOI and germanium-on-insulator (GOI) substrates, respectively. We present a simple ...
  • Ansel, Jason Andrew; Pacula, Maciej; Amarasinghe, Saman P.; O'Reilly, Una-May (Association for Computing Machinery (ACM), 2011-07)
    Many real world problems have a structure where small problem instances are embedded within large problem instances, or where solution quality for large problem instances is loosely correlated to that of small problem ...
  • Nayak, K. P.; Thompson, J. D.; Peyronel, T.; de Leon, N. P.; Lukin, M. D.; Tiecke, Tobias G.; Vuletic, Vladan (Optical Society of America, 2015-01)
    We demonstrate a method for efficient coupling of guided light from a single-mode optical fiber to nanophotonic devices. Our approach makes use of single-sided conical tapered optical fibers that are evanescently coupled ...
  • Levi, Retsef; Perakis, Georgia; Keller, Philipp W. (Springer Berlin Heidelberg, 2013-03)
    We propose a modeling and optimization framework to cast a broad range of fundamental multi-product pricing problems as tractable convex optimization problems. We consider a retailer offering an assortment of differentiated ...
  • Babic, Ana; Berkmen, Melanie; Lee, Catherine; Grossman, Alan D. (American Society for Microbiology, 2011-03)
    Horizontal gene transfer contributes to evolution and the acquisition of new traits. In bacteria, horizontal gene transfer is often mediated by conjugative genetic elements that transfer directly from cell to cell. Integrative ...
  • Feng, Zhengyan; Zhang, Botao; Ding, Wona; Liu, Xiaodong; Yang, Dong-Lei; Wei, Pengliang; Cao, Fengqiu; Zhu, Shihua; Zhang, Feng; Mao, Yanfei; Zhu, Jian-Kang (Nature Publishing Group, 2013-08)
    In the past few years, the development of sequence-specific DNA nucleases has progressed rapidly and such nucleases have shown their power in generating efficient targeted mutagenesis and other genome editing applications. ...
  • Desaulniers, Guy; Desrosiers, Jacques; Vidal, Thibaut; Ribeiro, Glaydston Mattos; Vieira, Bruno Salezze (Springer US, 2014-09)
    Onshore oil fields may contain hundreds of wells that use sophisticated and complex equipments. These equipments need regular maintenance to keep the wells at maximum productivity. When the productivity of a well decreases, ...
  • Preis, Ami; Whittle, Andrew; Ostfeld, Avi; Perelman, Lina (American Society of Civil Engineers, 2011-07)
    This paper describes and demonstrates an efficient method for online hydraulic state estimation in urban water networks. The proposed method employs an online predictor-corrector (PC) procedure for forecasting future water ...
  • Whelan, Thomas; Kaess, Michael; Finman, Ross Edward; Leonard, John Joseph (Institute of Electrical and Electronics Engineers (IEEE), 2014-05)
    In this paper we present a method for incrementally segmenting large RGB-D maps as they are being created. Recent advances in dense RGB-D mapping have led to maps of increasing size and density. Segmentation of these raw ...
  • Bilgic, Berkin; Horn, Berthold Klaus Paul; Masaki, Ichiro (Institute of Electrical and Electronics Engineers (IEEE), 2010-06)
    We present an integral image algorithm that can run in real-time on a Graphics Processing Unit (GPU). Our system exploits the parallelisms in computation via the NIVIDA CUDA programming model, which is a software platform ...
  • Farr, W. M.; Stevens, D.; Mandel, Ilya (Royal Society, 2015-06)
    Selection among alternative theoretical models given an observed dataset is an important challenge in many areas of physics and astronomy. Reversible-jump Markov chain Monte Carlo (RJMCMC) is an extremely powerful technique ...
  • Mavrokefalos, Anastassios; Han, Sang Eon; Yerci, Selcuk; Chen, Gang; Branham, Matthew Sanders (American Chemical Society (ACS), 2012-05)
    Thin-film crystalline silicon (c-Si) solar cells with light-trapping structures can enhance light absorption within the semiconductor absorber layer and reduce material usage. Here we demonstrate that an inverted nanopyramid ...
  • Han, Sang Eon; Mavrokefalos, Anastassios; Branham, Matthew Sanders; Chen, Gang (Society of Photo-optical Instrumentation Engineers, 2011-05)
    We examine light-trapping in thin crystalline silicon periodic nanostructures for solar cell applications. Using group theory, we show that light-trapping can be improved over a broad band when structural mirror symmetry ...
  • Sheng, Xing; Liu, Jifeng; Kozinsky, Inna; Michel, Jurgen; Kimerling, Lionel C.; Agarwal, Anuradha Murthy (Institute of Electrical and Electronics Engineers (IEEE), 2010-06)
    Thin film silicon solar cells are believed to be promising candidates for continuing cost reduction in photovoltaic panels because silicon usage could be greatly reduced. Since silicon is an indirect bandgap semiconductor, ...
  • Gorodetsky, Alex Arkady; Marzouk, Youssef M. (Society for Industrial and Applied Mathematics, 2014-11)
    Surrogate models for computational simulations are input-output approximations that allow computationally intensive analyses, such as uncertainty propagation and inference, to be performed efficiently. When a simulation ...
  • Bravo-Abad, Jorge; Rodriguez, Alejandro W.; Joannopoulos, John D.; Rakich, P. T.; Johnson, Steven G.; Soljacic, Marin (American Institute of Physics, 2010-03)
    In this letter, we show theoretically how the light-confining properties of triply-resonant photonic resonators can be tailored to enable dramatic enhancements of the conversion efficiency of terahertz (THz) generation via ...
  • Hu, Xiaolong; Holzwarth, Charles W.; Masciarelli, Daniele; Dauler, Eric A.; Berggren, Karl K. (Institute of Electrical and Electronics Engineers, 2009-07)
    We designed superconducting nanowire single-photon detectors (SNSPDs) integrated with silver optical antennae for free-space coupling and a dielectric waveguide for fiber coupling. According to our finite-element simulation, ...
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