Browsing by Department "Applied Research Laboratories"

Now showing items 1-14 of 14

    • Acoustic Radiation Force On A Sphere In Tissue 

      Ilinskii, Y. A.; Zabolotskaya, E. A.; Hamilton, M. F. (2012-05)
      A theory is presented for the acoustic radiation force on a sphere embedded in a soft elastic medium that possesses a shear modulus several orders of magnitude smaller than its bulk modulus. Scattering of both compressional ...

    • Alternative Computational Protocols for Supercharging Protein Surfaces for Reversible Unfolding and Retention of Stability 

      Der, Bryan S.; Kluwe, Christien; Miklos, Aleksandr E.; Jacak, Ron; Lyskov, Sergey; Gray, Jeffery J. -Johns Hopkins University, Baltimore, Maryland,; Georgiou, George; Ellington, Andrew D.; Kuhlman, Brian - University of North Carolina at Chapel Hill (PLOS One, 2013-05-31)
      Reengineering protein surfaces to exhibit high net charge, referred to as “supercharging”, can improve reversibility of unfolding by preventing aggregation of partially unfolded states. Incorporation of charged side chains ...

    • Coupled Pulsation And Translation Of A Gas Bubble And Rigid Particle 

      Hay, T. A.; Hamilton, M. R.; Ilinskii, Y. A.; Zabolotskaya, E. A. (2008-06)
      A nonlinear analytic model describing the interaction of a spherical gas bubble and spherical rigid particle is presented. Both the bubble and particle are free to translate. The model is accurate to fifth order in terms ...

    • Early History Of ISNA 

      Hamilton, M. F.; Muir, T. G.; Blackstock, D. T. (2012-09)
      The International Symposia on Nonlinear Acoustics, now referred to as ISNA, have convened regularly since 1968, bringing together scientists and engineers to report and discuss the latest developments in this branch of ...

    • The Effect Of Roughness On Bottom Loss From Elastic Ocean Bottoms 

      Isakson, M. J.; Chotiros, N. P. (2012-11)
      Acoustic interaction with the ocean bottom profoundly affects propagation in shallow waters. However, most forward ocean bottom interactions are modeled as if the bottom were a flat interface or use a simple model to ...

    • The Evolution Of Sediment Acoustic Models 

      Chotiros, N. P.; Isakson, M. J. (2012-11)
      Sediment acoustic models contain two connected components, the geo-physical description of the sediment and the model of acoustic processes. Geo-physical descriptors are used in the classification of sediments, and they ...

    • An integrated system for gamma-ray spectral mapping and anomaly detection 

      Reinhart, Alexander (2013-04)
      For security, environmental, and regulatory purposes it is useful to monitor wide areas for unexpected changes in radioactivity. Background radiation from naturally radioactive materials presents the largest challenge to ...

    • Model For The Dynamics Of A Bubble Undergoing Small Shape Oscillations Between Elastic Layers 

      Ilinskii, Y. A.; Hay, T. A.; Zabolotskaya, E. A.; Hamilton, M. F. (2012)
      A model is presented for a pulsating and translating gas bubble in a channel formed by two soft elastic parallel layers. The bubble is free to undergo small shape deformations. Coupled nonlinear second-order differential ...

    • Nonlinear Torsional Wave Beams 

      Wochner, M. S.; Hamilton, M. F.; Ilinskii, Y. A.; Zabolotskaya, E. A. (2008-06)
      An evolution equation with cubic nonlinearity is presented for a torsional wave beam in an isotropic elastic solid. Analytical solutions are presented for the fundamental and third harmonic in the far field of a uniform ...

    • Quantum Contextuality As A Measurement Disturbance Effect 

      La Cour, B. R. (2009-03)
      The question of quantum contextuality in the Mermin-Peres square is considered. It is shown that a deterministic, noncontextual hidden variable model of this problem is not inconsistent with quantum mechanics, contrary to ...

    • Seabed Attenuation In Water Saturated Sands On New Jersey Continental Shelf In 50-3000 Hz Band 

      Knobles, D. P. (2010-09)
      The Shallow Water 2006 ocean acoustics experiment on the New Jersey continental shelf was designed in part to determine the frequency dependence of sound speed and attenuation for a sandy sediment in the 50-3000 Hz band. ...

    • Seabed Rough Surface Scattering Described By 2-Way Coupled Mode Approach 

      Knobles, D. P.; Sagers, J. D. (2012-11)
      A 2-way integral equation coupled mode (IECM) approach is used to examine the physics of scattering from a rough seabed. Roughness realizations for the seabed are generated from a wavenumber power spectrum whose parameterization ...

    • Surveying The Dynamic Radio Sky With The Long Wavelength Demonstrator Array 

      Lazio, T. Joseph W.; Clarke, Tracy E.; Lane, W. M.; Gross, C.; Kassim, N. E.; Ray, P. S.; Wood, D.; York, J. A.; Kerkhoff, A.; Hicks, B.; Polisensky, E.; Stewart, K.; Dalal, N. P.; Cohen, A. S.; Erickson, W. C. (2010-12)
      This paper presents a search for radio transients at a frequency of 73.8 MHz (4 m wavelength) using the all-sky imaging capabilities of the Long Wavelength Demonstrator Array (LWDA). The LWDA was a 16-dipole phased array ...

    • Wave Propagation In Water-Saturated Sand And Grain Contact Physics 

      Chotiros, N. P.; Isakson, M. J. (2010-09)
      Measurements in sandy ocean sediments over a broad range of frequencies show that the sound speed dispersion is significantly greater than that predicted by the Biot-Stoll model with constant coefficients, and the observed ...