Now showing items 1064-1083 of 1674

    • POWERFUL ACTIVITY in the BRIGHT AGES. I. A VISIBLE/IR SURVEY of HIGH REDSHIFT 3C RADIO GALAXIES and QUASARS 

      Hilbert, Bryan; Chiaberge, Marco; Kotyla, J.P.; Tremblay, Grant R; Stanghellini, Carlo; Sparks, William B.; Baum, Stefi A.; Capetti, Alessandro; MacChetto, Ferdinando Duccio; Perlman, Eric S. (2016-07-22)
      We present new rest-frame UV and visible observations of 22 high-z (1 < z < 2.5) 3C radio galaxies and QSOs obtained with the Hubble Space Telescope's Wide Field Camera 3 instrument. Using a custom data reduction strategy ...
    • Practical constraints pertinent to the design of neural networks 

      Abdallah, Said Sadek; Cofer, Rufus H. (1992-08-20)
      in designing a feedforward neural network for numerical computation using the backpropagation algorithm it is essential to know that the resulting network has a practical global minimum, meaning that convergence to a ...
    • Precipitation and Release of Solar Energetic Particles from the Solar Coronal Magnetic Field 

      Zhang, Ming; Zhao, Lulu (2017-09-07)
      Most solar energetic particles (SEPs) are produced in the corona. They propagate through complex coronal magnetic fields subject to scattering and diffusion across the averaged field lines by turbulence. We examine the ...
    • Predicting Coral Recruitment in Palau's Complex Reef Archipelago 

      Golbuu, Yimnang; Wolanski, Eric C.; Idechong, Jacques Wasai; Victor, Steven; Isechal, Adelle Lukes; Oldiais, Noelle Wenty; Idip, David; Richmond, Robert H.; van Woesik, Robert (2012-11-28)
      Reproduction and recruitment are key processes that replenish marine populations. Here we use the Palau archipelago, in the western Pacific Ocean, as a case study to examine scales of connectivity and to determine whether ...
    • Predicting magnetopause crossings at geosynchronous orbit during the Halloween storms 

      Unknown author (2007-01)
      [1] In late October and early November of 2003, the Sun unleashed a powerful series of events known as the Halloween storms. The coronal mass ejections launched by the Sun produced several severe compressions of the ...
    • Prediction of firing pin shape and 3-D matching of shells and firing pins based on firing pin impressions in primers 

      Dawson, Donald W.; Hart, Chris L.; Gilbert, Bernard R.; Andrade, Rafael A.; Blatt, Joel H. (1997-02-10)
      A variable resolution video machine vision system has been built which will determine the 3-D shape of a firing pin from the dent it has made in the primer of a shell. The system can also compare primer dents in different ...
    • Preliminary XCOV26 results for EC14012-1446 

      Provençal, Judith L.; Thompson, Susan E.; Montgomery, Michael H.; Kanaan, Antonio; Shipman, Harry L.; Dalessio, James; Childers, D.; Clémens, Christian; Vennes, Stéphane; Wood, Matt A. (2009)
      EC14012-1446 is a hydrogen atmosphere (DA) white dwarf pulsator. Its rich pulsation spectrum displays a range of excited modes with complex multiplet structure, in addition to numerous combination frequencies. In April ...
    • Preprocessing of SAR interferometric data using anisotropic diffusion filter 

      Sartor, Kenneth; De Allen, Josef Vaughn; Ganthier, Emile; Tenali, Gnana Bhaskar (2007-05-07)
      The most commonly used smoothing algorithms for complex data processing are blurring functions (i.e., Hanning, Taylor weighting, Gaussian, etc.). Unfortunately, the filters so designed blur the edges in a Synthetic Aperture ...
    • Pressure shifts and abundance gradients in the atmosphere of the DAZ white dwarf GALEX J193156.8+011745 

      Vennes, Stéphane; Kawka, Adéla; Németh, Péter (2011-06-01)
      We present a detailed model atmosphere analysis of high-dispersion and high signal-to-noise ratio spectra of the heavily polluted DAZ white dwarf GALEX J1931+0117. The spectra obtained with the Very Large Telescope ...
    • Pressure swing adsorption separation of H₂S/CO₂/CH₄ gas mixtures with molecular sieves 4A, 5A, and 13X 

      Heck, Howell H.; Hall, Merilyn L.; Dos Santos, Rudy; Tomadakis, Manolis M. (2018-07-03)
      Pressure swing adsorption experiments were carried out for the separation of equimolar mixtures of carbon dioxide and methane containing small amounts of hydrogen sulfide, utilizing 4A, 5A, and 13X molecular sieves. ...
    • Principal-component analysis of two-particle azimuthal correlations in PbPb and pPb collisions at CMS 

      Sirunyan, A. M.; Tumasyan, A. R; Adam, Wolfgang; Baarmand, Marc M.; Bhopatkar, Vallary; Colafranceschi, Stefano; Hohlmann, Marcus; Noonan, Daniel; Roy, Tuhin S.; Yumiceva, F. (2017-12-05)
      For the first time a principle-component analysis is used to separate out different orthogonal modes of the two-particle correlation matrix from heavy ion collisions. The analysis uses data from sNN=2.76TeV PbPb and ...
    • Prioritizing Key Resilience Indicators to Support Coral Reef Management in a Changing Climate 

      McClanahan, Tim R.; Donner, Simon D.; Maynard, Jeffrey Allen; MacNeil, M. Aaron; Graham, Nicholas Anthony James; Maina, Joseph M.; Baker, Andrew C.; Alemu I., Jahson Berhane; Beger, Maria; van Woesik, Robert (2012-08-29)
      Managing coral reefs for resilience to climate change is a popular concept but has been difficult to implement because the empirical scientific evidence has either not been evaluated or is sometimes unsupportive of theory, ...
    • Probabilistic microcell prediction model 

      Song- Kyoo, Kim (2002-06-25)
      A microcell is a cell with 1-km or less radius which is suitable for heavily urbanized area such as a metropolitan city. This paper deals with the microcell prediction model of propagation loss which uses probabilistic ...
    • Probabilistic Model-Based Cell Tracking 

      Nezamoddini-Kachouie, Nezamoddin; Fieguth, Paul; Ramunas, John; Jervis, Eric (2006)
      The study of cell behavior is of crucial importance in drug and disease research. The fields of bioinformatics and biotechnology rely on the collection, processing, and analysis of huge numbers of biocellular images, ...
    • Processing of one-fiber interferometric fiber-optic sensor signals 

      Tino, Alavie, A.; Grossman, Barry G.; Thursby, Michael H. (1990-02-13)
      Recent research conducted in the Fiber -Optic Sensor Systems Laboratory at Florida Institute of Technology in fiber -optic strain sensors for use in smart structures has concentrated primarily on one -fiber interferometers. ...
    • Product-based multiresolution image fusion 

      Ostrem, Trond M.; Kozaitis, Samuel P. (2005-04-05)
      We combined images from different sensors that were enhanced by multiscale products of the wavelet coefficients. Using the wavelet transform, we used a multiresolution analysis to form products of coefficients across scales. ...
    • Production of ω mesons in p + p, d + Au, Cu + Cu, and Au + Au collisions at √sNN=200 GeV 

      Baksay, Gyöngyi; Baksay, László A; Dehmelt, Klaus; Hohlmann, Marcus; Rembeczki, Szabolcs; Adare, Andrew Marshall; Afanasiev, Sergei V.; Aidala, Christine A.; Ajitanand, N. N.; Akiba, Yasuyuki (2011-10-07)
      The PHENIX experiment at the Relativistic Heavy Ion Collider has measured ω meson production via leptonic and hadronic decay channels in p+p, d+Au, Cu+Cu, and Au+Au collisions at √sNN = 200 GeV. The invariant transverse ...
    • Progressive image transmission with RCPT protection 

      Yao, Lei; Cao, Lei; Chen, Chang Wen (2007-01-28)
      In this paper, a joint source-channel coding scheme is proposed for progressive image transmission over channels with both random bit errors and packet loss by using rate-compatible punctured Turbo codes (RCPT) protection ...
    • Propagation of solar energetic particles in three-dimensional interplanetary magnetic fields: In view of characteristics of sources 

      He, H. Q.; Qin, Gang; Zhang, Ming (2011-05-26)
      In this paper, a model of solar energetic particle (SEP) propagation in the three-dimensional Parker interplanetary magnetic field is calculated numerically. We study the effects of the different aspects of particle sources ...
    • Propagation speed of runaway electron avalanches 

      Coleman, Lee M.; Dwyer, Joseph R. (2006-06-07)
      Simulations of relativistic runaway breakdown (RRB) are performed as functions of both time and space, resulting in explicit calculations of e-folding lengths (λ) and times (τ). The ratio of λ to τ agrees well with the ...