Results 1 - 10 of 91

Session 2520 Considering Numerical Error Propagation in Modeling and Regression of Data

by Neima Brauner, Mordechai Shacham
"... The use of user-friendly interactive regression software enables undergraduate engineering students to reach a high level of sophistication in regression, correlation and analysis of data. In order to interpret correctly the results, the students must be familiar with potential causes for poor fits ..."
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The use of user-friendly interactive regression software enables undergraduate engineering students to reach a high level of sophistication in regression, correlation and analysis of data. In order to interpret correctly the results, the students must be familiar with potential causes for poor fits

EURASIP Journal on Applied Signal Processing 2005:15, 2514–2520 c ○ 2005 Hindawi Publishing Corporation A Data-Driven Multidimensional Indexing Method for Data Mining in Astrophysical Databases

by Marco Frailis, Alessandro De Angelis, Vito Roberto , 2005
"... Large archives and digital sky surveys with dimensions of 10 12 bytes currently exist, while in the near future they will reach sizes of the order of 10 15. Numerical simulations are also producing comparable volumes of information. Data mining tools are needed for information extraction from such l ..."
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Large archives and digital sky surveys with dimensions of 10 12 bytes currently exist, while in the near future they will reach sizes of the order of 10 15. Numerical simulations are also producing comparable volumes of information. Data mining tools are needed for information extraction from

Political Selection of Firms into Privatization Programs- Evidence from Romanian Comprehensive Data

by Ádám Szentpéteri, Assistant Lecturer, Álmos Telegdy , 2008
"... KTI/IE Discussion Papers are circulated to promote discussion and provoque comments. Any references to discussion papers should clearly state that the paper is preliminary. Materials published in this series may subject to further publication. ..."
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KTI/IE Discussion Papers are circulated to promote discussion and provoque comments. Any references to discussion papers should clearly state that the paper is preliminary. Materials published in this series may subject to further publication.

Photoproduction of pions and etas in nuclei ∗

by M. Effenberger, A. Hombach, S. Teis, U. Mosel , 1996
"... We calculate the cross sections for inclusive one-pion, two-pion and eta photoproduction in nuclei in the photon energy range from 300 MeV to 900 MeV within the framework of a semi-classical BUU transport model. Our results are compared with existing experimental data and discussed with respect to a ..."
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We calculate the cross sections for inclusive one-pion, two-pion and eta photoproduction in nuclei in the photon energy range from 300 MeV to 900 MeV within the framework of a semi-classical BUU transport model. Our results are compared with existing experimental data and discussed with respect

MKPH-T-99-4 Medium Effects in Coherent Pion Photo- and Electroproduction

by On He, D. Drechsel, L. Tiator, S. S. Kamalov, Shin Nan Yang , 2008
"... Coherent π 0 photo- and electroproduction on 4 He and 12 C nuclei is investigated in the framework of a distorted wave impulse approximation in momentum space. The elementary process is described by the recently developed unitary isobar model. Medium effects are considered by introducing a phenomeno ..."
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phenomenological ∆ self-energy. The recent experimental data for 4 He and 12 C can be well described over a wide range of energies and emission angles by the assumption that the ∆-nuclear interaction saturates. PACS numbers: 24.10.Eq, 25.20.Lj

GENERATING FUNCTIONAL FOR BOUND STATES IN QED

by Cd Issn, Coden Fizbe, V. N. Pervushin, A. B. Arbuzov , 2008
"... The manifestly Lorentz covariant formulation of quantum electrodynamics dis-regards Coulomb instantaneous interaction and its consequence – instantaneous bound states (IBS’s). In this article we consider the way of construction the IBS generating functional using the operator generalization of the i ..."
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of the initial data in the Dirac Hamiltonian approach to QED. PACS numbers: 11.55.Hx, 13.60.Hb, 25.20.Lj UDC 539.125

Measurement of the Cross Section Asymmetry of the Reaction γp → π ◦ p in the Resonance Energy Region Eγ = 0.5 − 1.1 GeV

by F. V. Adamian, A. Yu. Buniatian, G. S. Frangulian, P. I. Galumian, V. H. Grabski, V. Hairapetian, H. H. Hakopian, V. K. Hoktanian, J. V. Manukian, A. M. Sirunian, H. Vartapetian, H. H. Vartapetian, V. G. Volchinsky, R. A. Arndt, I. I. Strakovsky, R. L. Workman , 2008
"... The cross section asymmetry Σ has been measured for the photoproduction of π ◦-mesons off protons, using polarized photons in the energy range Eγ = 0.5 −1.1GeV. The CM angular coverage is θ ∗ π = 85 ◦ −125 ◦ with energy and angle steps of 25 MeV and 5 ◦ , respectively. The obtained Σ data, which cov ..."
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cover the second and third resonance regions, are compared with existing experimental data and recent phenomenological analyses. The influence of these measurements on such analyses is also considered. PACS numbers: 13.60.Le, 25.20.Lj I.

Quasifree Eta Photoproduction from Nuclei

by Frank Lee Triumf, From Nuclei, Frank X. Lee, Louis E. Wright, Cornelius Bennhold, Lothar Tiator , 12
"... Quasifree j photoproduction from nuclei is studied in the Distorted Wave Impulse Approximation (DWIA). The elementary eta production operator contains Born terms, vector meson and nucleon resonance contributions and provides an excellent description of the recent low energy Mainz measurements on ..."
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on the nucleon. The resonance sector includes the S 11 (1535), P 11 (1440) and D 13 (1520) states whose couplings are fixed by independent electromagnetic and hadronic data. Different models for the jN t-matrix are used to construct a simple jA optical potential based on a tae-approximation. We find

Aging effects on the properties of imidazolium, quaternary ammonium, pyridinium and pyrrolidinium-based ionic liquids used in fuel and energy production

by Elise B Fox , L Taylor Smith , Tyler K Williamson , Sarah E Kendrick
"... Ionic liquids are often cited for their excellent thermal stability, a key property for their use as solvents and in the chemical processing of biofuels. However, there has been little supporting data on the long term aging effect of temperature on these materials. Imizadolium, quaternary ammonium, ..."
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Ionic liquids are often cited for their excellent thermal stability, a key property for their use as solvents and in the chemical processing of biofuels. However, there has been little supporting data on the long term aging effect of temperature on these materials. Imizadolium, quaternary ammonium

Open charm and beauty production in hadron reactions

by G. I. Lykasov A, V. V. Lyubushkin A, V. A. Bednyakov A , 909
"... The production of charmed and beauty hadrons in proton-proton and proton-antiproton collisions at high energies is analyzed within the modified quark-gluon string model (QGSM) including the internal motion of quarks in colliding hadrons. It is shown that using both the QGSM and NLO QCD one can descr ..."
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describe the experimental data rather successfully in a wide region of transverse momenta. We also present some predictions for the future experiments on the beauty baryon production in pp collisions at LHC energies and on the charmed meson production in ¯pp reactions at GSI energies. PACS: 14.65.Dw; 25.20
Results 1 - 10 of 91