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Browsing MIT Open Access Articles by Title

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  • Cole, Garrett D.; Bai, Yu; Aspelmeyer, Markus; Fitzgerald, Eugene A. (American Institute of Physics (AIP), 2010-06)
    We outline a facile fabrication technique for the realization of free-standing Al[subscript x]Ga[subscript 1−x]As heterostructures of arbitrary aluminum content. Utilizing xenon difluoride (XeF[subscript 2]) we rapidly and ...
  • de Macedo Rodrigues, Katyucia; Ben-Avi, Emma; Sliva, Danielle D.; Choe, Myong-sun; Drottar, Marie; Wang, Ruopeng; Fischl, Bruce; Grant, Patricia E.; Zollei, Lilla (Frontiers Research Foundation, 2015-02)
    We present a detailed description of a set of FreeSurfer compatible segmentation guidelines tailored to infant MRI scans, and a unique data set of manually segmented acquisitions, with subjects nearly evenly distributed ...
  • Betancourt, Michael Joseph; Corliss, Ross; Hays-Wehle, James Prewitt; Leight, William Axel; van Nieuwenhuizen, Gerrit Jan; Balewski, Jan T.; Stevens, J. R.; Walker, M. (American Physical Society, 2013-09)
    We present measurements of three-dimensional correlation functions of like-sign, low-transverse-momentum kaon pairs from √s[subscript NN] = 200 GeV Au + Au collisions. A Cartesian surface-spherical harmonic decomposition ...
  • Smith, Cameron; Heyne, Steffen; Richter, Andreas S.; Will, Sebastian; Backofen, Rolf (Oxford University Press, 2010-05)
    The Freiburg RNA tools web server integrates three tools for the advanced analysis of RNA in a common web-based user interface. The tools IntaRNA, ExpaRNA and LocARNA support the prediction of RNA–RNA interaction, exact ...
  • Ferng, Jennifer H. (MIT Press, 2010-04)
    Artist and activist Jean-Jacques Lebel, who had imported beat poetry into France from the United States, once invited Gilles Deleuze and Felix Guattari to a 1975 concert held in Massachusetts, where the two had ...
  • Chilton, Lydia B.; Cordeiro, Felicia; Landay, James A.; Weld, Daniel S.; Dow, Steven P.; Miller, Robert C.; Zhang, Haoqi; Kim, Ju Ho; Andre, Paul (Association for Computing Machinery (ACM), 2014-04)
    Organizing conference sessions around themes improves the experience for attendees. However, the session creation process can be difficult and time-consuming due to the amount of expertise and effort required to consider ...
  • Egan, Kevin; Tseng, Yu-Ting; Holzschuch, Nicolas; Durand, Fredo; Ramamoorthi, Ravi (Association for Computing Machinery (ACM), 2009-08)
    Motion blur is crucial for high-quality rendering, but is also very expensive. Our first contribution is a frequency analysis of motion-blurred scenes, including moving objects, specular reflections, and shadows. We show ...
  • Ren, Y.; Hayton, D. J.; Hovenier, J. N.; Cui, M.; Gao, J. R.; Klapwijk, T. M.; Shi, S. C.; Kao, Tsung-Yu; Hu, Q.; Reno, J. L. (American Institute of Physics, 2012-09)
    We demonstrate an experimental scheme to simultaneously stabilize the frequency and amplitude of a 3.5 THz third-order distributed feedback quantum cascade laser as a local oscillator. The frequency stabilization has been ...
  • Rahul, Hariharan Shankar; Edalat, Farinaz; Katabi, Dina; Sodini, Charles G. (Association for Computing Machinery (ACM), 2009-09)
    There has been burgeoning interest in wireless technologies that can use wider frequency spectrum. Technology advances, such as 802.11n and ultra-wideband (UWB), are pushing toward wider frequency bands. The analog-to-digital ...
  • Perreault, David J.; Selders, Robert L.; Kassakian, John G. (Institute of Electrical and Electronics Engineers (IEEE), 1998-07)
    A new current-sharing technique for paralleled power converters, which is based on frequency encoding of the current-sharing information, is introduced. The approach has significant advantages over existing methods, including ...
  • Tsai, Tsung-Han; Zhou, Chao; Adler, Desmond C.; Fujimoto, James G. (Optical Society of America, 2009-11)
    We demonstrate a frequency comb (FC) swept laser and a frequency comb Fourier domain mode locked (FC-FDML) laser for applications in optical coherence tomography (OCT). The fiber-based FC swept lasers operate at a sweep ...
  • Tsai, Tsung-Han; Zhou, Chao; Adler, Desmond C.; Fujimoto, James G. (SPIE, 2010-02)
    We demonstrate a frequency comb (FC) swept laser and a frequency comb Fourier domain mode locked (FC-FDML) laser for applications in optical coherence tomography (OCT). The fiber-based FC swept lasers operate at a sweep ...
  • Dawson, Joel L.; Bohorquez, Jose L.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2009-12)
    Since its invention in 1922, the super-regenerative amplifier (SRA) has been used in a variety of short-range, low-power, and/or low-cost wireless systems due to its simple implementation and excellent performance for a ...
  • Degen, Christian; Poggio, M.; Oosterkamp, T. H.; Mamin, H. J.; Rugar, D. (American Institute of Physics, 2010-02)
    Frequency domain multiplexing, using an actively damped micromechanical cantilever, is used to detect multiple force signals simultaneously. The measurement principle is applied to magnetic resonance force microscopy to ...
  • Strazzo, Sarah; Elsner, James B.; Trepanier, Jill C.; Emanuel, Kerry Andrew (American Geophysical Union (AGU), 2013-07)
    Synthetic hurricane track data generated from a downscaling approach are compared to best-track (observed) data to analyze differences in regional frequency, intensity, and sensitivity of limiting intensity to sea surface ...
  • Ren, Y.; Hovenier, J. N.; Cui, M.; Hayton, D. J.; Gao, J. R.; Klapwijk, T. M.; Shi, S. C.; Reno, J. L.; Kao, Tsung-Yu; Hu, Qing (American Institute of Physics (AIP), 2012-01)
    We report frequency locking of two 3.5-THz third-order distributed feedback (DFB)quantum cascade lasers(QCLs) by using methanol molecular absorption lines, a proportional-integral-derivative controller, and a NbN bolometer. ...
  • Techapiesancharoenkij, Ratchatee; Kostamo, Jari; Allen, Samuel Miller; O'Handley, Robert C. (American Institute of Physics, 2009-05)
    A prototype of Ni–Mn–Ga based ferromagnetic-shape-memory-alloy (FSMA) actuator was designed and built; an acoustic-assist technique was applied to the actuator to enhance its performance. A piezoelectric stack actuator was ...
  • Rodriguez-Wong, Alejandro; Ilic, Ognjen; Bermel, Peter A.; Celanovic, Ivan; Joannopoulos, John D.; Soljacic, Marin; Johnson, Steven G. (American Physical Society (APS), 2011-09)
    We demonstrate the possibility of achieving enhanced frequency-selective near-field radiative heat transfer between patterned (photonic-crystal) slabs at designable frequencies and separations, exploiting a general numerical ...
  • Hu, Qing; Kumar, Sushil; Lee, Alan; Qin, Qi; Reno, John L. (Institute of Electrical and Electronics Engineers, 2009-04)
    We demonstrate a tunable terahertz quantum cascade laser using an abutted silicon lens and grating feedback. The device tunes discontinuously over 160 GHz with a center frequency of 4.4 THz.
  • Lin, Michael F; Jungreis, Irwin; Kellis, Manolis; Sabeti, Pardis C; Sealfon, Rachel S.; Wolf, Maxim Y. (BioMed Central, 2015-02)
    Background The increasing availability of sequence data for many viruses provides power to detect regions under unusual evolutionary constraint at a high resolution. One approach leverages the synonymous substitution rate ...
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