Browsing FAS Scholarly Articles by Title

Now showing items 41-60 of 18033

    • 3D TV: A Scalable System for Real-Time Acquisition, Transmission, and Autostereoscopic Display of Dynamic Scenes 

      Matusik, Wojciech; Pfister, Hanspeter (Association for Computing Machinery, 2004)
      Three-dimensional TV is expected to be the next revolution in the history of television. We implemented a 3D TV prototype system with real-time acquisition, transmission, and 3D display of dynamic scenes. We developed a ...

    • 3D Ultrasound-Guided Motion Compensation System for Beating Heart Mitral Valve Repair 

      Yuen, Shelten G.; Kesner, Samuel Benjamin; Vasilyev, Nikolay; Del Nido, Pedro J.; Howe, Robert D. (Springer Verlag, 2008)
      Beating heart intracardiac procedures promise significant benefits for patients, however, the fast motion of the heart poses serious challenges to surgeons. We present a new 3D ultrasound-guided motion (3DUS) compensation ...

    • 3D-printed spherical dipole antenna integrated on small RF node 

      Adams, J.J.; Slimmer, Scott C.; Bernhard, J.T.; Lewis, Jennifer (Institution of Engineering and Technology (IET), 2015)
      New three-dimensional (3D) printing techniques enable the integration of an antenna directly onto the package of a small wireless sensor node. This volume-filling approach ensures near-optimal bandwidth performance of the ...

    • A 3D-printed, functionally graded soft robot powered by combustion 

      Bartlett, Nicholas Warren; Tolley, M. T.; Overvelde, Johannes Tesse bastiaan; Weaver, J; Mosadegh, B; Bertoldi, Katia; Whitesides, George McClelland; Wood, Robert J. (American Association for the Advancement of Science (AAAS), 2015)
      Roboticists have begun to design biologically inspired robots with soft or partially soft bodies, which have the potential to be more robust and adaptable, and safer for human interaction, than traditional rigid robots. ...

    • 3D-Printing of Lightweight Cellular Composites 

      Compton, Brett G.; Lewis, Jennifer (Wiley-Blackwell, 2014)

    • A 4% Geometric Distance to the Galaxy NGC4258 from Orbital Motions in a Nuclear Gas Disk 

      Herrnstein, J.; Moran, James M.; Greenhill, Lincoln Jared; Diamond, P.; Inoue, M.; Nakai, N.; Miyoshi, M.; Henkel, C.; Riess, A. (Springer Nature, 1999)
      The accurate measurement of extragalactic distances is a central challenge of modern astronomy, being required for any realistic description of the age, geometry and fate of the Universe. The measurement of relative ...

    • A 4-DOF Robot for Positioning Ultrasound Imaging Catheters 

      Loschak, Paul; Tenzer, Yaroslav; Degirmenci, Alperen; Howe, Robert D. (American Society of Mechanical Engineers, 2015)
      In this paper we present the design, fabrication, and testing of a robot for automatically positioning ultrasound imaging catheters. Our system will point ultrasound (US) catheters to provide real-time imaging of anatomical ...

    • 4-Manifolds With Inequivalent Symplectic Forms and 3-Manifolds With Inequivalent Fibrations 

      McMullen, Curtis T.; Taubes, Clifford H. (International Press, 1999)
      We exhibit a closed, simply connected 4-manifold \(X\) carrying two symplectic structures whose first Chern classes in \(H^2 (X, \mathbb{Z})\) lie in disjoint orbits of the diffeomorphism group of \(X\). Consequently, the ...

    • 4-Phenylbutyrate Attenuates the ER Stress Response and Cyclic AMP Accumulation in DYT1 Dystonia Cell Models 

      Cho, Jin A.; Zhang, Xuan; Miller, Gregory M.; Lencer, Wayne I.; Nery, Flavia C. (Public Library of Science, 2014)
      Dystonia is a neurological disorder in which sustained muscle contractions induce twisting and repetitive movements or abnormal posturing. DYT1 early-onset primary dystonia is the most common form of hereditary dystonia ...

    • The 4.5 µm full-orbit phase curve of the hot Jupiter HD 209458B 

      Zellem, Robert T.; Lewis, Nikole K.; Knutson, Heather A.; Griffith, Caitlin A.; Showman, Adam P.; Fortney, Jonathan J.; Cowan, Nicolas B.; Agol, Eric; Burrows, Adam; Charbonneau, David; Deming, Drake; Laughlin, Gregory; Langton, Jonathan (IOP Publishing, 2014)
      The hot Jupiter HD 209458b is particularly amenable to detailed study as it is among the brightest transiting exoplanet systems currently known (V-mag = 7.65; K-mag = 6.308) and has a large planet-to-star contrast ratio. ...

    • 4He Liquid-Vapor Interface Below 1 K Studied Using X-Ray Reflectivity 

      Penanen, Konstantin; Fukuto, Masafumi; Heilmann, Ralf K.; Silvera, Isaac F.; Pershan, Peter S. (American Physical Society, 2000)
      The free surface of thin films of liquid helium adsorbed on a solid substrate has been studied using x-ray reflectivity. The film thickness and interfacial profile are extracted from the angular dependence of measured ...

    • A 65 k.y. Time Series From Sediment-Hosted Glasses Reveals Rapid Transitions in Ocean Ridge Magmas 

      Ferguson, David; Li, Yinqi; Langmuir, Charles; Costa, Kassandra; McManus, Jerry; Huybers, Peter; Corbotte, Suzanne (Geological Society of America, 2017)
      Studies of ocean ridge magmatism have been hampered by the difficulty in constructing time-series data over more than a few thousand years. Sediment rapidly covers newly formed ocean crust, and older rocks, even when ...

    • 6d Conformal matter 

      Del Zotto, Michele; Heckman, Jonathan J.; Tomasiello, Alessandro; Vafa, Cumrun (Springer Verlag, 2015)
      A single M5-brane probing G, an ADE-type singularity, leads to a system which has G x G global symmetry and can be viewed as "bifundamental" (C, C) matter. For the AN series, this leads to the usual notion of bifundamental ...

    • 8.4 GHz VLBI Observations of SN 2004et in NGC 6946 

      Martí-Vidal, I.; Marcaide, J. M.; Alberdi, A.; Guirado, J. C.; Lara, L.; Pérez-Torres, M. A.; Ros, E.; Argo, M. K.; Beswick, R. J.; Muxlow, T. W. B.; Pedlar, A.; Shapiro, Irwin; Stockdale, C. J.; Sramek, R. A.; Weiler, K. W.; Vinko, J. (EDP Sciences, 2007-05-25)
      We report on 8.4 GHz very-long-baseline-interferometry (VLBI) observations of the type II-P supernova SN2004et in the spiral galaxy NGC 6946, made on 20 February 2005 (151 days after explosion). The Very Large Array (VLA) ...

    • 9-Genes Reinforce the Phylogeny of Holometabola and Yield Alternate Views on the Phylogenetic Placement of Strepsiptera 

      McKenna, Duane D; Farrell, Brian Dorsey (Public Library of Science, 2010)
      Background: The extraordinary morphology, reproductive and developmental biology, and behavioral ecology of twisted wing parasites (order Strepsiptera) have puzzled biologists for centuries. Even today, the phylogenetic ...

    • A 15.65-solar-mass black hole in an eclipsing binary in the nearby spiral galaxy M 33 

      Orosz, Jerome A.; McClintock, Jeffrey E.; Narayan, Ramesh; Bailyn, Charles D.; Hartman, Joel D.; Macri, Lucas; Liu, Jiefeng; Pietsch, Wolfgang; Remillard, Ronald A.; Shporer, Avi; Mazeh, Tsevi (Nature Research (part of Springer Nature), 2007)
      Stellar-mass black holes are found in X-ray-emitting binary systems, where their mass can be determined from the dynamics of their companion stars(1-3). Models of stellar evolution have difficulty producing black holes in ...

    • A base-excision DNA-repair protein finds intrahelical lesion bases by fast sliding in contact with DNA 

      Blainey, Paul C.; Oijen, Antoine van; Banerjee, Anirban; Verdine, Gregory L.; Xie, X. Sunney (National Academy of Sciences, 2006)
      A central mystery in the function of site-specific DNA-binding proteins is the detailed mechanism for rapid location and binding of target sites in DNA. Human oxoguanine DNA glycosylase 1 (hOgg1), for example, must search ...

    • A Broadband, Background-Free Quarter-Wave Plate Based on Plasmonic Metasurfaces 

      Yu, Nanfang; Aieta, Francesco; Genevet, Patrice; Kats, Mikhail A.; Gaburro, Zeno; Capasso, Federico (American Chemical Society, 2012)

    • A Bubbling Nearby Molecular Cloud: Complete Shells in Perseus 

      Arce, Héctor G.; Borkin, Michelle A.; Goodman, Alyssa A.; Pineda, Jaime E.; Beaumont, Christopher N. (American Astronomical Society, 2011)
      We present a study of the shells (and bubbles) in the Perseus molecular cloud using the COMPLETE survey large-scale (CO)-C-12(1-0) and (CO)-C-13(1-0) maps. The 12 shells reported here are spread throughout most of the ...

    • A Chandra Observation of the Globular Cluster Terzan 1: The Neutron Star X‐Ray Transient X1732−304 in Quiescence 

      Wijnands, Rudy; Heinke, Craig O.; Grindlay, Jonathan E. (American Astronomical Society, 2002)