42 research outputs found

    Regulation’s influence on EU banking efficiency: an evaluation post crisis

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    This paper examines the impact of regulatory policies on banking market efficiency using a sample of 678 commercial banks from 21 European Union countries for the post-crisis year 2010, controlling for bank-specific and country-specific variables. Data on regulation, supervision and monitoring variables, and activity restrictions are from the most recent Bank Regulation and Supervision Survey database conducted by the World Bank, published 2012. Besides these we incorporate bank size, equity, market share, government ownership, and growth of Gross Domestic Product per capita, employing an Ordinary Least Squares method. Focus is on two alternative measures of banking market efficiency: net interest margin and overhead costs (operating expenses to assets). Elevated levels of these two ratios should indicate a low level of banking efficiency. The evidence suggests that the link between capital regulation and banking efficiency is not robust enough to control for other regulatory variables. Results confirm that activity restrictions have a negative and significant impact on banking efficiency. Policies encouraging official supervisory power do not enhance efficiency of the banking sector. The only approach positively and statistically significantly associated with efficiency is private monitoring. This leads to the suggestion that government regulation and supervision should be more focused on promoting transparency of information

    Higgs-photon associated production at eeˉe\bar{e} colliders

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    We present complete analytical expressions for the amplitudes of the process eeˉHγe\bar{e}\rightarrow H\gamma. The calculation is performed using nonlinear gauges, which significantly simplifies both the actual analytical calculation and the check of its gauge invariance. After comparing our results with a previous numerical calculation, we extend the range of Higgs masses and center of mass energies to those appropriate to LEP 200 and a future linear collider.Comment: To appear in PRD. 18 pages latex, uses REVTEX; 5 postscript figure

    High energy photon-neutrino elastic scattering

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    The one-loop helicity amplitudes for the elastic scattering process γνγν\gamma\nu\to\gamma\nu in the Standard Model are computed at high center of mass energies. A general decomposition of the amplitudes is utilized to investigate the validity of some of the key features of our results. In the center of mass, where s=2ω\sqrt{s} = 2\omega, the cross section grows roughly as ω6\omega^6 to near the threshold for WW-boson production, s=mW\sqrt{s} = m_W. Although suppressed at low energies, we find that the elastic cross section exceeds the cross section for γνγγν\gamma\nu\to\gamma\gamma\nu when s>13\sqrt{s}>13 GeV. We demonstrate that the scattered photons are circularly polarized and the net value of the polarization is non-zero. Astrophysical implications of high energy photon-neutrino scattering are discussed.Comment: 9 pages, 7 figures, RevTeX

    Photons, neutrinos and optical activity

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    We compute the one-loop helicity amplitudes for low-energy νγνγ\nu\gamma\to\nu\gamma scattering and its crossed channels in the standard model with massless neutrinos. In the center of mass, with s=2ω2me\sqrt{s} = 2\omega\ll 2m_e, the cross sections for these 222\to 2 channels grow roughly as ω6\omega^6. The scattered photons in the elastic channel are circularly polarized and the net value of the polarization is non-zero. We also present a discussion of the optical activity of a sea of neutrinos and estimate the values of its index of refraction and rotary power.Comment: 9 pages, ReVTeX4, 6 figures include

    Production of ZZ Boson Pairs at Photon Linear Colliders

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    The ZZZZ pair production rate in high energy γγ\gamma \gamma collisions is evaluated with photons from laser backscattering. We find that searching for the Standard Model Higgs boson with a mass up to, or slightly larger than, 400 GeV via the ZZZZ final state is possible via photon fusion with backscattered laser photons at a linear e+ee^+e^- collider with energies in the range 600 GeV <se+e<< \sqrt{s_{e^+e^-}} < 1000 GeV.Comment: 18 pages in REVTEX, Figures available upon request, DOE-ER40757-024,CPP-93-24 and FSU-HEP-93080

    Analysis of Intelligent Classifiers and Enhancing the Detection Accuracy for Intrusion Detection System

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    In this paper we discuss and analyze some of the intelligent classifiers which allows for automatic detection and classification of networks attacks for any intrusion detection system. We will proceed initially with their analysis using the WEKA software to work with the classifiers on a well-known IDS (Intrusion Detection Systems) dataset like NSL-KDD dataset. The NSL-KDD dataset of network attacks was created in a military network by MIT Lincoln Labs. Then we will discuss and experiment some of the hybrid AI (Artificial Intelligence) classifiers that can be used for IDS, and finally we developed a Java software with three most efficient classifiers and compared it with other options. The outputs would show the detection accuracy and efficiency of the single and combined classifiers used

    Advanced Television Research Program

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    Contains reports on ten research projects.National Science Foundation Grant MIP 87-14969National Science Foundation FellowshipAdvanced Television Research ProgramAT&T Bell Laboratories Doctoral Support ProgramKodak FellowshipU.S. Air Force - Electronic Systems Division Contract F1 9628-89-K-004

    Form Factors and QCD in Spacelike and Timelike Region

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    We analyze the basic hard exclusive processes: \pi\gamma*\gamma - transition, pion and nucleon electromagnetic form factors, and discuss the analytic continuation of QCD formulas from the spacelike q^2<0 to the timelike region q^2 >0 of the relevant momentum transfers. We describe the construction of the timelike version of the coupling constant \alpha_s. We show that due to the analytic continuation of the collinear logarithms each eigenfunction of the evolution equation acqiures a phase factor and investigate the resulting interference effects which are shown to be very small. We found no sources for the K-factor-type enhancements in the perturbative QCD contribution to the hadronic form factors. To study the soft part of the pion electromagnetic form factor, we use a QCD sum rule inspired model and show that there are non-canceling Sudakov double logarithms which result in a K-factor-type enhancement in the timelike region.Comment: 12 pages, LaTeX; a few typos corrected, references adde

    Advanced Television and Signal Processing Program

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    Contains an introduction and reports on fifteen research projects.Advanced Television Research ProgramAdams-Russell Electronics, Inc.National Science Foundation Fellowship Grant MIP 87-14969National Science Foundation FellowshipU.S. Navy - Office of Naval Research Grant N00014-89-J-1489U.S. Air Force - Electronic Systems Division Contract F1 9628-89-K-004
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