article stringlengths 3 714k | abstract stringlengths 0 152k | article_id stringlengths 9 15 |
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[sec:introduction]introduction
the leptonic decays of a charged pseudoscalar meson @xmath7 are processes of the type @xmath8, where @xmath9, @xmath10, or @xmath11. because no strong interactions are present in the leptonic final state @xmath12, such decays provide a clean way to probe the complex, strong interactions... | we have studied the leptonic decay @xmath0, via the decay channel @xmath1, using a sample of tagged @xmath2 decays collected near the @xmath3 peak production energy in @xmath4 collisions with the cleo - c detector.
we obtain @xmath5 and determine the decay constant @xmath6 mev, where the first uncertainties are stat... | 0901.1147 |
Introduction
additive models @xcite provide an important family of models for semiparametric regression or classification. some reasons for the success of additive models are their increased flexibility when compared to linear or generalized linear models and their increased interpretability when compared to fully no... | additive models play an important role in semiparametric statistics.
this paper gives learning rates for regularized kernel based methods for additive models.
these learning rates compare favourably in particular in high dimensions to recent results on optimal learning rates for purely nonparametric regularized ker... | 1405.3379 |
Introduction
studies of laser beams propagating through turbulent atmospheres are important for many applications such as remote sensing, tracking, and long - distance optical communications. howerver, fully coherent laser beams are very sensitive to fluctuations of the atmospheric refractive index. the initially coh... | the effect of a random phase diffuser on fluctuations of laser light (scintillations) is studied.
not only spatial but also temporal phase variations introduced by the phase diffuser are analyzed.
the explicit dependence of the scintillation index on finite - time phase variations is obtained for long propagation p... | 0903.5449 |
Introduction
the transport properties of nonlinear non - equilibrium dynamical systems are far from well - understood@xcite. consider in particular so - called ratchet systems which are asymmetric periodic potentials where an ensemble of particles experience directed transport@xcite. the origins of the interest in th... | in 84, 258 (2000), mateos conjectured that current reversal in a classical deterministic ratchet is associated with bifurcations from chaotic to periodic regimes.
this is based on the comparison of the current and the bifurcation diagram as a function of a given parameter for a periodic asymmetric potential.
barbi ... | nlin0608019 |
Introduction
the segmentation process as a whole can be thought of as consisting of two tasks : recognition and delineation. recognition is to determine roughly `` where '' the object is and to distinguish it from other object - like entities. although delineation is the final step for defining the spatial extent of ... | this paper investigates, using prior shape models and the concept of ball scale (b - scale), ways of automatically recognizing objects in 3d images without performing elaborate searches or optimization.
that is, the goal is to place the model in a single shot close to the right pose (position, orientation, and scale)... | 1002.1288 |
Supplementary information: + numerical simulations
the simulations we discuss here allowed us to obtain spectra of the shg response. we employed comsol multiphysics software (www.comsol.com) in order to perform simulations of the linear optical response as described in ref. @xcite. a unit cell containing a single sic... | we report on strong enhancement of mid - infrared second harmonic generation (shg) from sic nanopillars due to the resonant excitation of localized surface phonon - polaritons within the reststrahlen band.
the magnitude of the shg peak at the monopole mode experiences a strong dependence on the resonant frequency bey... | 1607.05158 |
Introduction
the so - called `` nucleon spin crisis '' raised by the european muon collaboration (emc) measurement in 1988 is one of the most outstanding findings in the field of hadron physics @xcite,@xcite. the renaissance of the physics of high energy deep inelastic scatterings is greatly indebted to this epoch - ... | with a special intention of clarifying the underlying spin contents of the nucleon, we investigate the generalized form factors of the nucleon, which are defined as the @xmath0-th @xmath1-moments of the generalized parton distribution functions, within the framework of the chiral quark soliton model.
a particular emp... | hep-ph0605279 |
"\n\nIntroduction\nwith significant research efforts being directed to the development of neurocompu(...TRUNCATED) | "synaptic memory is considered to be the main element responsible for learning and cognition in huma(...TRUNCATED) | 1511.00051 |
"\n\nIntroduction\nlet @xmath1. let @xmath2\\longrightarrow [0,\\pi_{p, q}/2]$] be the integral @xma(...TRUNCATED) | "we improve the currently known thresholds for basisness of the family of periodically dilated @xmat(...TRUNCATED) | 1405.7337 |
"\n\nIntroduction\none surprising result that has come out of the more than 200 extrasolar planet di(...TRUNCATED) | "long time coverage and high radial velocity precision have allowed for the discovery of additional (...TRUNCATED) | 0706.1962 |
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