Now showing items 385-404 of 965

  • H-2 model reduction for large-scale linear dynamical systems 

    Gugercin, S.; Antoulas, A. C.; Beattie, C. (Siam Publications, 2008)
    The optimal H-2 model reduction problem is of great importance in the area of dynamical systems and simulation. In the literature, two independent frameworks have evolved focusing either on solution of Lyapunov equations ...
  • "Hail Mary" Technologies to Engineer Earth's Climate 

    Cairns, John (EcoRes Forum, 2014-01-22)
    Scientists and inventors have proposed a variety of technologies to avoid further increases in the Earth s temperature by greenhouse gases. The two most popular technological approaches are: reflecting solar energy back ...
  • Hard-core repulsive interactions in even-parity electron pairings for heavy-fermion systems 

    Zhang, F. C.; Lee, T. K. (American Physical Society, 1987-03)
    By studying the Anderson lattice Hamiltonian with spin-orbit coupling using an auxiliary boson method, we have examined the hard-core repulsive interactions in heavy-fermion materials. As a consequence of the anisotropy ...
  • Has Human Society Passed a Tipping Point for Effective Reduction of Greenhouse Gas Emissions? 

    Cairns, John (Asian Journal of Experimental Sciences, 2014-01-22)
    Recent publications have indicated that a 2 C increase of global average temperature, once thought acceptable, may involve serious risks (Greg, 2004). A global mean tempurature increase of 4 C would be hotter than any time ...
  • Has Human Society Passed a Tipping Point for Effective Reduction of Greenhouse Gas Emissions? 

    Cairns, John (Asian Journal of Experimental Sciences, 2014-01-22)
    Recent publications have indicated that a 2 C increase of global average temperature, once thought acceptable, may involve serious risks (Greg, 2004). A global mean tempurature increase of 4 C would be hotter than any time ...
  • Heat conductivity of the DNA double helix 

    Savin, A. V.; Mazo, M. A.; Kikot, I. P.; Manevitch, L. I.; Onufriev, A. V. (American Physical Society, 2011-06-20)
    Thermal conductivity of isolated single molecule DNA fragments is of importance for nanotechnology, but has not yet been measured experimentally. Theoretical estimates based on simplified (1D) models predict anomalously ...
  • herMES: a deficit in the surface brightness of the cosmic infrared background due to galaxy cluster gravitational lensing 

    Zemcov, M.; Blain, A.; Cooray, A.; Bethermin, M.; Bock, J.; Clements, D. L.; Conley, A.; Conversi, L.; Dowell, C. D.; Farrah, D.; Glenn, J.; Griffin, M.; Halpern, M.; Jullo, E.; Kneib, J. P.; Marsden, G.; Nguyen, H. T.; Oliver, S. J.; Richard, J.; Roseboom, I. G.; Schulz, B.; Scott, D.; Shupe, D. L.; Smith, A. J.; Valtchanov, I.; Viero, M.; Wang, L.; Wardlow, J. (IOP Publishing Ltd., 2013-06)
    We have observed four massive galaxy clusters with the SPIRE instrument on the Herschel Space Observatory and measure a deficit of surface brightness within their central region after removing detected sources. We simulate ...
  • herMES: candidate gravitationally lensed galaxies and lensing statistics at submillimeter wavelengths 

    Wardlow, J. L.; Cooray, A.; De Bernardis, F.; Amblard, A.; Arumugam, V.; Aussel, H.; Baker, A. J.; Bethermin, M.; Blundell, R.; Bock, J.; Boselli, A.; Bridge, C.; Buat, V.; Burgarella, D.; Bussmann, R. S.; Cabrera-Lavers, A.; Calanog, J.; Carpenter, J. M.; Casey, C. M.; Castro-Rodriguez, N.; Cava, A.; Chanial, P.; Chapin, E.; Chapman, S. C.; Clements, D. L.; Conley, A.; Cox, P.; Dowell, C. D.; Dye, S.; Eales, S.; Farrah, D.; Ferrero, P.; Franceschini, A.; Frayer, D. T.; Frazer, C.; Fu, H.; Gavazzi, R.; Glenn, J.; Solares, E. A. G.; Griffin, M.; Gurwell, M. A.; Harris, A. I.; Hatziminaoglou, E.; Hopwood, R.; Hyde, A.; Ibar, E.; Ivison, R. J.; Kim, S.; Lagache, G.; Levenson, L.; Marchetti, L.; Marsden, G.; Martinez-Navajas, P.; Negrello, M.; Neri, R.; Nguyen, H. T.; O'Halloran, B.; Oliver, S. J.; Omont, A.; Page, M. J.; Panuzzo, P.; Papageorgiou, A.; Pearson, C. P.; Perez-Fournon, I.; Pohlen, M.; Riechers, D.; Rigopoulou, D.; Roseboom, I. G.; Rowan-Robinson, M.; Schulz, B.; Scott, D.; Scoville, N.; Seymour, N.; Shupe, D. L.; Smith, A. J.; Streblyanska, A.; Strom, A.; Symeonidis, M.; Trichas, M.; Vaccari, M.; Vieira, J. D.; Viero, M.; Wang, L.; Xu, C. K.; Yan, L.; Zemcov, M. (IOP Publishing Ltd., 2013-01)
    We present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 deg(2) of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14 +/- 0.04 deg(-2). The selected sources have ...
  • herMES: candidate high-redshift galaxies discovered with herschel/spire 

    Dowell, C. D.; Conley, A.; Glenn, J.; Arumugam, V.; Asboth, V.; Aussel, H.; Bertoldi, F.; Bethermin, M.; Bock, J.; Boselli, A.; Bridge, C.; Buat, V.; Burgarella, D.; Cabrera-Lavers, A.; Casey, C. M.; Chapman, S. C.; Clements, D. L.; Conversi, L.; Cooray, A.; Dannerbauer, H.; De Bernardis, F.; Ellsworth-Bowers, T. P.; Farrah, D.; Franceschini, A.; Griffin, M.; Gurwell, M. A.; Halpern, M.; Hatziminaoglou, E.; Heinis, S.; Ibar, E.; Ivison, R. J.; Laporte, N.; Marchetti, L.; Martinez-Navajas, P.; Marsden, G.; Morrison, G. E.; Nguyen, H. T.; O'Halloran, B.; Oliver, S. J.; Omont, A.; Page, M. J.; Papageorgiou, A.; Pearson, C. P.; Petitpas, G.; Perez-Fournon, I.; Pohlen, M.; Riechers, D.; Rigopoulou, D.; Roseboom, I. G.; Rowan-Robinson, M.; Sayers, J.; Schulz, B.; Scott, D.; Seymour, N.; Shupe, D. L.; Smith, A. J.; Streblyanska, A.; Symeonidis, M.; Vaccari, M.; Valtchanov, I.; Vieira, J. D.; Viero, M.; Wang, L.; Wardlow, J.; Xu, C. K.; Zemcov, M. (IOP Publishing Ltd., 2014-01)
    We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 mu m flux densities to search for red sources. We apply this method to 21 ...
  • herMES: cosmic infrared background anisotropies and the clustering of dusty star-forming galaxies 

    Viero, M. P.; Wang, L.; Zemcov, M.; Addison, G.; Amblard, A.; Arumugam, V.; Aussel, H.; Bethermin, M.; Bock, J.; Boselli, A.; Buat, V.; Burgarella, D.; Casey, C. M.; Clements, D. L.; Conley, A.; Conversi, L.; Cooray, A.; De Zotti, G.; Dowell, C. D.; Farrah, D.; Franceschini, A.; Glenn, J.; Griffin, M.; Hatziminaoglou, E.; Heinis, S.; Ibar, E.; Ivison, R. J.; Lagache, G.; Levenson, L.; Marchetti, L.; Marsden, G.; Nguyen, H. T.; O'Halloran, B.; Oliver, S. J.; Omont, A.; Page, M. J.; Papageorgiou, A.; Pearson, C. P.; Perez-Fournon, I.; Pohlen, M.; Rigopoulou, D.; Roseboom, I. G.; Rowan-Robinson, M.; Schulz, B.; Scott, D.; Seymour, N.; Shupe, D. L.; Smith, A. J.; Symeonidis, M.; Vaccari, M.; Valtchanov, I.; Vieira, J. D.; Wardlow, J.; Xu, C. K. (IOP Publishing Ltd., 2013-07)
    We present measurements of the auto-and cross-frequency power spectra of the cosmic infrared background (CIB) at 250, 350, and 500 mu m (1200, 860, and 600 GHz) from observations totaling similar to 70 deg(2) made with the ...
  • herMES: the contribution to the cosmic infrared background from galaxies selected by mass and redshift 

    Viero, M. P.; Moncelsi, L.; Quadri, R. F.; Arumugam, V.; Assef, R. J.; Bethermin, M.; Bock, J.; Bridge, C.; Casey, C. M.; Conley, A.; Cooray, A.; Farrah, D.; Glenn, J.; Heinis, S.; Ibar, E.; Ikarashi, S.; Ivison, R. J.; Kohno, K.; Marsden, G.; Oliver, S. J.; Roseboom, I. G.; Schulz, B.; Scott, D.; Serra, P.; Vaccari, M.; Vieira, J. D.; Wang, L.; Wardlow, J.; Wilson, G. W.; Yun, M. S.; Zemcov, M. (IOP Publishing Ltd., 2013-12)
    We quantify the fraction of the cosmic infrared background (CIB) that originates from galaxies identified in the UV/optical/near-infrared by stacking 81,250 (similar to 35.7 arcmin(-2)) K-selected sources (K-AB < 24.0) ...
  • herMES: the far-infrared emission from dust-obscured galaxies 

    Calanog, J. A.; Wardlow, J.; Fu, H.; Cooray, A.; Assef, R. J.; Bock, J.; Casey, C. M.; Conley, A.; Farrah, D.; Ibar, E.; Kartaltepe, J.; Magdis, G.; Marchetti, L.; Oliver, S. J.; Perez-Fournon, I.; Riechers, D.; Rigopoulou, D.; Roseboom, I. G.; Schulz, B.; Scott, D.; Symeonidis, M.; Vaccari, M.; Viero, M.; Zemcov, M. (IOP Publishing Ltd., 2013-09)
    Dust-obscured galaxies (DOGs) are an ultraviolet-faint, infrared-bright galaxy population that reside at z similar to 2 and are believed to be in a phase of dusty star-forming and active galactic nucleus (AGN) activity. ...
  • herschel observations of far-infrared cooling lines in intermediate redshift (ultra)-luminous infrared galaxies 

    Rigopoulou, D.; Hopwood, R.; Magdis, G. E.; Thatte, N.; Swinyard, B. M.; Farrah, D.; Huang, J. S.; Alonso-Herrero, A.; Bock, J. J.; Clements, D.; Cooray, A.; Griffin, M. J.; Oliver, S.; Pearson, C.; Riechers, D.; Scott, D.; Smith, A.; Vaccari, M.; Valtchanov, I.; Wang, L. (IOP Publishing Ltd., 2014-01)
    We report the first results from a spectroscopic survey of the [C II] 158 mu m line from a sample of intermediate redshift (0.2 < z < 0.8) (ultra)-luminous infrared galaxies, (U) LIRGs (L-IR > 10(11.5) L-circle dot), using ...
  • Herschel PEP/HerMES: the redshift evolution (0 <= z <= 4) of dust attenuation and of the total (UV plus IR) star formation rate density 

    Burgarella, D.; Gruppioni, C.; Cucciati, O.; Heinis, S.; Berta, S.; Bethermin, M.; Bock, J.; Cooray, A.; Dunlop, J. S.; Farrah, D.; Franceschini, A.; Le Floc'h, E.; Lutz, D.; Magnelli, B.; Nordon, R.; Oliver, S. J.; Page, M. J.; Popesso, P.; Pozzi, F.; Riguccini, L.; Vaccari, M.; Viero, M. (EDP Sciences, 2013-06)
    Using new homogeneous luminosity functions (LFs) in the far-ultraviolet (FUV) from VVDS and in the far-infrared (FIR) from Herschel/PEP and Herschel/HerMES, we studied the evolution of the dust attenuation with redshift. ...
  • Herschel-ATLAS: A binary HyLirg pinpointing a cluster of starbursting protoellipticals 

    Ivison, R. J.; Swinbank, A. M.; Smail, I.; Harris, A. I.; Bussmann, R. S.; Cooray, A.; Cox, P.; Fu, H.; Kovacs, A.; Krips, M.; Narayanan, D.; Negrello, M.; Neri, R.; Penarrubia, J.; Richard, J.; Riechers, D. A.; Rowlands, K.; Staguhn, J. G.; Targett, T. A.; Amber, S.; Baker, A. J.; Bourne, N.; Bertoldi, F.; Bremer, M.; Calanog, J. A.; Clements, D. L.; Dannerbauer, H.; Dariush, A.; De Zotti, G.; Dunne, L.; Eales, S. A.; Farrah, D.; Fleuren, S.; Franceschini, A.; Geach, J. E.; George, R. D.; Helly, J. C.; Hopwood, R.; Ibar, E.; Jarvis, M. J.; Kneib, J. P.; Maddox, S.; Omont, A.; Scott, D.; Serjeant, S.; Smith, M. W. L.; Thompson, M. A.; Valiante, E.; Valtchanov, I.; Vieira, J.; van der Werf, P. (IOP PUBLISHING LTD, 2013-08)
    Panchromatic observations of the best candidate hyperluminous infrared galaxies from the widest Herschel extragalactic imaging survey have led to the discovery of at least four intrinsically luminous z = 2.41 galaxies ...
  • High quality factor silica microspheres functionalized with self-assembled nanomaterials 

    Kandas, I.; Zhang, B. G.; Daengngam, C.; Ashry, I.; Jao, C. Y.; Peng, B.; Ozdemir, S. K.; Robinson, H. D.; Heflin, J. R.; Yang, L.; Xu, Y. (Optical Society of America, 2013-09)
    With extremely low material absorption and exceptional surface smoothness, silica-based optical resonators can achieve extremely high cavity quality (Q) factors. However, the intrinsic material limitations of silica (e. ...
  • high-accuracy quartic force field calculations for the spectroscopic constants and vibrational frequencies of 1(1)a ' l-c3h-: a possible link to lines observed in the horsehead nebula photodissociation region 

    Fortenberry, R. C.; Huang, X. C.; Crawford, T. D.; Lee, T. J. (IOP Publishing Ltd., 2013-07)
    It has been shown that rotational lines observed in the Horsehead nebula photodissociation region (PDR) are probably not caused by l-C3H+, as was originally suggested. In the search for viable alternative candidate carriers, ...
  • high-resolution time-of-flight mass-spectrometry impulse-field focusing pulse generators 

    Miller, R. L.; Browder, J. A.; Sanzone, G. (AIP Publishing, 1986-08)
    Experiments have shown that the unit mass resolution of conventional Wiley-McLaren time_of_flight (TOF)mass spectrometers can be significantly improved using the technique of impulse_field focusing (IFF). Details of the ...
  • Highly sensitive optical response of optical fiber long period gratings to nanometer-thick ionic self-assembled multilayers 

    Wang, Z. Y.; Heflin, J. R.; Stolen, R. H.; Ramachandran, S. (AIP Publishing, 2005-05)
    Ionic self-assembled multilayers deposited on long period fiber gratings (LPGs) yield dramatic resonant-wavelength shifts, even with nanometer-thick films. Fine control of the refractive index and the thickness of these ...
  • Hole dynamics and effective hole-hole interaction in a quantum antiferromagnet 

    Xu, J. H.; Ting, C. S.; Lee, T. K. (American Physical Society, 1991-04)
    By the use of an effective Hamiltonian which takes into account the constraint on the motion of holes in a quantum antiferromagnet, the dynamics of holes is investigated. It is found that there is a quasiparticle band whose ...