Results 71 to 80 of about 1,540,061 (200)

Lightness scale from image intensity distributions [PDF]

Applied Optics, 1982
A lightness scale is derived from a theoretical estimate of the probability distribution of image intensities for natural scenes. The derived image intensity distribution considers three factors: reflectance; surface orientation and illumination; and surface texture (or roughness).
openaire   +2 more sources

Transverse momentum distributions and nuclear effects

EPJ Web of Conferences, 2015
A distorted spin-dependent spectral function for 3He is considered to take care of the final state interaction in the extraction of the quark transverse-momentum distributions in the neutron from semi-inclusive deep inelastic electron scattering off ...
Pace Emanuele, Dotto Alessio Del, Kaptari Leonid, Rinaldi Matteo, Salmè Giovanni, Scopetta Sergio   +5 more
doaj   +1 more source

Photon Generalized Parton Distributions

, 2011
We present a calculation of the generalized parton distributions of the photon using overlaps of photon light-front wave functions.Comment: Talk given at LightCone 2011, 4 pages, 3 ...
A.V. Belitsky, Asmita Mukherjee, D. Chakrabarti, J.P. Ralston, K. Goeke, M. Burkardt, M. Diehl, R. Manohar, S. Boffi, S. Friot, S.J. Brodsky, S.J. Brodsky, Sreeraj Nair   +12 more
core   +1 more source

Implication of the overlap representation for modelling generalized parton distributions [PDF]

, 2001
Based on a field theoretically inspired model of light-cone wave functions, we derive valence-like generalized parton distributions and their double distributions from the wave function overlap in the parton number conserved s-channel.
A Bogicevic, A Bradshaw, B-D Yu, BG Briner, C Ratsch, C Ratsch, C Stampft, DM Ceperly, EA Soares, H Brune, J Repp, J Xie de, JP Perdew, JP Perdew, K Lau II, KA Fichthorn, KM Lau, L Kleinmann, L Osterlund, M Bockstedte, M Fuchs, O Jeandupeux, P Hyldgaard, P Statiris, S Narasimhan, TL Einstein, TL Einstein, TL Einstein   +27 more
core   +2 more sources

Effects of Drought, Pest Pressure and Light Availability on Seedling Establishment and Growth: Their Role for Distribution of Tree Species across a Tropical Rainfall Gradient. [PDF]

PLoS ONE, 2015
Tree species distributions associated with rainfall are among the most prominent patterns in tropical forests. Understanding the mechanisms shaping these patterns is important to project impacts of global climate change on tree distributions and ...
Julian Gaviria, Bettina M J Engelbrecht
doaj   +1 more source

The Quark Spin Distributions of the Nucleon

, 1998
The quark helicity measured in polarized deep inelastic scattering is different from the quark spin in the rest frame of the nucleon. We point out that the quark spin distributions $\Delta q_{RF}(x)$ are connected with the quark helicity distributions ...
Aoki, Bo-Qiang Ma, Bourrely, Brodsky, Fukugita, Ivan Schmidt, Jacques Soffer, Jaffe, Jakob, Ma, Schmidt, Soffer   +11 more
core   +2 more sources

Improved approximation of spatial light distribution

PLOS ONE, 2017
The rapid worldwide evolution of LEDs as light sources has brought new challenges, which means that new methods are needed and new algorithms have to be developed. Since the majority of LED luminaries are of the multi-source type, established methods for the design of light engines cannot be used in the design of LED light engines.
David Kaljun, Tina Novak, Janez Žerovnik   +2 more
openaire   +4 more sources

Laser light polarization plastic visualizer: light scattering distribution and anisotropy

RSC Advances, 2013
A laser light polarization visualizer (LPV) is obtainable by the photopolymerization of a multi-acrylate monomer, initiated by diketones under a single beam nano-pulsed (lambda = 532 nm) laser light. The derived light scattering distribution and polymer anisotropy are dependent on the polarization state of the incident-polymerizing beam.
Shalit A, Lucchetta D E, Criante L, Vita F, Tasseva J R, Simoni F, Franco L, Bizzarri R, Faraci P, Conte R, Viti L, Kanera R, Castagna R   +12 more
openaire   +4 more sources

Extreme value distributions for dependent jointly ln,p-symmetrically distributed random variables

Dependence Modeling, 2016
A measure-of-cone representation of skewed continuous ln,p-symmetric distributions, n ∈ N, p > 0, is proved following the geometric approach known for elliptically contoured distributions.
Müller K., Richter W.-D.
doaj   +1 more source

Cosmic ray tests of the D0 preshower detector

, 2000
The D0 preshower detector consists of scintillator strips with embedded wavelength-shifting fibers, and a readout using Visible Light Photon Counters. The response to minimum ionizing particles has been tested with cosmic ray muons.
A Bross, A Gordeev, A Patwa, A Talalaevskii, A.A Mayorov, A.S Turcot, Adams, Adams, Allkofer, Antipov, B Zhou, Bethe, D Lincoln, De Pascale, F Canelli, G Davis, G Ginther, H.A Neal, J Estrada, J Kotcher, J Qian, J Warchol, K Del Signore, K Yip, L Sawyer, Lincoln, M Liu, M Rijssenbeek, M Wayne, Molière, Molière, P Baringer, P Grannis, P Rubinov, P Yamin, R Van Kooten, S Desai, S Grünendahl, S Hou, Scott, T Nunnemann, V Buescher, Z.M Wang   +42 more
core   +1 more source