Now showing items 320-339 of 911

    • Gaia Early Data Release 3. Acceleration of the solar system from Gaia astrometry 

      Bertone, S.; et al. (European Space Agency, 2020-12-02)
      Context. Gaia Early Data Release 3 (Gaia EDR3) provides accurate astrometry for about 1.6 million compact (QSO-like) extragalactic sources, 1.2 million of which have the best-quality five-parameter astrometric solutions. ...
    • Gaia Early Data Release 3. Summary of the contents and survey properties 

      Bertone, S.; et al. (EDP Sciences, 2020-11-03)
      Context. We present the early installment of the third Gaia data release, Gaia EDR3, consisting of astrometry and photometry for 1.8 billion sources brighter than magnitude 21, complemented with the list of radial velocities ...
    • Gambit: An autonomous chess-playing robotic system 

      Matuszek, Cynthia; Mayton, Brian; Aimi, Roberto (IEEE, 2011-08-15)
      This paper presents Gambit, a custom, mid-cost 6-DoF robot manipulator system that can play physical board games against human opponents in non-idealized environments. Historically, unconstrained robotic manipulation in ...
    • Gap solitons in a nonlinear quadratic negative-index cavity 

      Scalora, Michael; Ceglia, Domenico de; D’Aguanno, Giuseppe; Mattiucci, Nadia; Akozbek, Neset; Centini, Marco; Bloemer, Mark J. (American Physical Society (APS), 2020-06-19)
      We predict the existence of gap solitons in a nonlinear, quadratic Fabry-Pérot negative index cavity. A peculiarity of a single negative index layer is that if magnetic and electric plasma frequencies are different it forms ...
    • Gathering and Managing Facts for Intelligence Analysis 

      Schneider, David; Matuszek, Cynthia; Shah, Purvesh; Kahlert, Robert; Baxter, David; Cabral, John; Witbrock, Michael; Lenat, Douglas (2005-05)
      This paper presents a novel method, based on the Cyc Knowledge Base and Inference Engine, of gathering, organizing and sharing information about entities of interest (be they people, organizations, events or some other ...
    • Gazetteer Generation for Neural Named Entity Recognition 

      Song, Chan Hee; Lawrie, Dawn; Finin, Tim; Mayfield, James (AAAI, 2020-05-17)
      We present a way to generate gazetteers from the Wikidata knowledge graph and use the lists to improve a neural NER system by adding an input feature indicating that a word is part of a name in the gazetteer. We empirically ...
    • Generalized coupled-mode theory for χ⁽²⁾ interactions in finite multilayered structures 

      D’Aguanno, Giuseppe; Centini, Marco; Scalora, Michael; Sibilia, Concita; Bertolotti, Mario; Bloemer, Mark J.; Bowden, Charles M.
      Using a first-order multiple-scale expansion approach, we derive a set of coupled-mode equations that describe both forward and backward second-harmonic generation and amplification processes in nonlinear, one-dimensional, ...
    • Generalized Nonlinear Schrödinger Equation for Dispersive Susceptibility and Permeability: Application to Negative Index Materials 

      Scalora, Michael; Syrchin, Maxim S.; Akozbek, Neset; Poliakov, Evgeni Y.; D’Aguanno, Giuseppe; Mattiucci, Nadia; Bloemer, Mark J.; Zheltikov, Aleksei M. (American Physical Society (APS), 2005-06-27)
      A new generalized nonlinear Schrödinger equation describing the propagation of ultrashort pulses in bulk media exhibiting frequency dependent dielectric susceptibility and magnetic permeability is derived and used to ...
    • Generating Digital Twin models using Knowledge Graphs for Industrial Production Lines 

      Banerjee, Agniva; Dalal, Raka; Mittal, Sudip; Joshi, Karuna Pande (ACM Publications, 2017-06-25)
      Digital Twin models are computerized clones of physical assets that can be used for in-depth analysis. Industrial production lines tend to have multiple sensors to generate near real-time status information for production. ...
    • Generating Linked Data by Inferring the Semantics of Tables 

      Mulwad, Varish; Finin, Tim; Joshi, Anupam (2011-09-03)
      Vast amounts of information is encoded in structured tables found in documents, on the Web, and in spreadsheets or databases. Integrating or searching over this information benefits from understanding its intended meaning. ...
    • Generating Realistic COVID19 X-rays with a Mean Teacher + Transfer Learning GAN 

      Menon, Sumeet; Galita, Joshua; Chapman, David; Gangopadhyay, Aryya; Mangalagiri, Jayalakshmi; Nguyen, Phuong; Yesha, Yaacov; Yesha, Yelena; Saboury, Babak; Morris, Michael (2020-09-26)
      COVID-19 is a novel infectious disease responsible for over 800K deaths worldwide as of August 2020. The need for rapid testing is a high priority and alternative testing strategies including X-ray image classification are ...
    • Generating Videos with Scene Dynamics 

      Vondrick, Carl; Pirsiavash, Hamed; Torralba, Antonio (2016)
      We capitalize on large amounts of unlabeled video in order to learn a model of scene dynamics for both video recognition tasks (e.g. action classification) and video generation tasks (e.g. future prediction). We propose a ...
    • Generating Videos with Scene Dynamics 

      Vondrick, Carl; Pirsiavash, Hamed; Torralba, Antonio (2016)
      We capitalize on large amounts of unlabeled video in order to learn a model of scene dynamics for both video recognition tasks (e.g. action classification) and video generation tasks (e.g. future prediction). We propose a ...
    • GENPass: A Multi-Source Deep Learning Model For Password Guessing 

      Xia, Zhiyang; Yi, Ping; Liu, Yunyu; Jiang, Bo; Wang, Wei; Zhu, Ting (IEEE, 2019-09-11)
      The password has become today’s dominant method of authentication. While brute-force attack methods such as HashCat and John the Ripper have proven unpractical, the research then switches to password guessing. ...
    • Geolocating Blogs From Their Textual Content 

      Fink, Clay; Piatko, Christine; Mayfield, James; Finin, Tim; Martineau, Justin (AAAI, 2009-03-23)
      Mashups showing the geographic location of the authors of social media content are popular. They generally depend on the authors reporting their own location. For blogs, auto-mated geolocation strategies using IP address ...
    • The Geolocation of Web Logs from Textual Clues 

      Fink, Clay; Piatko, Christine; Mayfield, James; Chou, Danielle; Finin, Tim; Martineau, Justin (IEEE, 2009-08-29)
      Understanding the spatial distribution of people who author social media content is of growing interest for researchers and commerce. Blogging platforms depend on authors reporting their own location. However, not all ...
    • Geometry of Chalcogenide Negative Curvature Fibers for CO2 Laser Transmission 

      Wei, Chengli; Menyuk, Curtis R.; Hu, Jonathan (2018-07-16)
      We study impact of geometry on leakage loss in negative curvature fibers made with As2Se3 chalcogenide and As2Se3 chalcogenide glasses for carbon dioxide (CO2) laser transmission. The minimum leakage loss decreases when ...
    • Giant field localization in 2-D photonic crystal cavities with defect resonances: Bringing nonlinear optics to the W/cm² level 

      Mattiucci, Nadia; Bloemer, Mark J.; D’Aguanno, Giuseppe (AIP publishing, 2012-07-18)
      We investigate the field localization properties in a 2-D photonic crystal cavity with defect resonances. Although based on a simple geometry, these resonances achieve extremely high quality (Q)-factors ∼10⁸. We provide ...
    • Giant second-harmonic generation efficiency and ideal phase matching with a double ε-near-zero cross-slit metamaterial 

      Argyropoulos, Christos; D’Aguanno, Giuseppe; Alù, Andrea (American Physical Society (APS), 2014-06-03)
      Efficient second-harmonic generation may be induced based on the anomalous tunneling properties of double zero-permittivity narrow cross-slit nonlinear channels. Ideal phase matching conditions, large coherence length, ...
    • Global Momentum Preservation for Position-based Dynamics 

      Dahl, Alex; Bargteil, Adam W. (Association for Computing Machinery, 2019-10-28)
      Position-based dynamics has emerged as an exceedingly popular approach for animating soft body dynamics. Unfortunately, the basic approach suffers from artificial loss of angular momentum. We propose a simple approach to ...