The nucleon strange vector and isoscalar electromagnetic form factors are studied using a spectral decomposition. The KK̄ contribution to the electric and magnetic radii as well as the magnetic moment is evaluated to all orders in the strong interaction using an analytic continuation of experimental KN scattering amplitudes and bounds from unitarity. The relationship between non-resonant and res...

A series of novel metal complexes of Schiff bases have been prepared by the interactions of Cu (II) with 1,3 di hydro 3 [2-(Phenyl) – ethylidene]-2H-indol-2-one-hydrazine carboxamide in bimolecular ratios. All the new compounds have been characterized by elemental analysis, conductance measurement, magnetic moment determinations, IR, UV and NMR spectral studies and thermal studies. The physio-c...

Abstract. A general method is presented for the assessment of data attribute variability, which plays an important role in initial screening of multiand high-dimensional data sets. Instead of the commonly used second centralized moment, known as variance, the proposed method allows a mathematically rigorous characterization of attribute sensitivity given not only Euclidean distances but partial...

We derive simplified formulas for analyzing the moment stability of stochastic parametrically forced linear systems. This analysis extends the results in [3], where, assuming the stochastic excitation is small, the stability of such systems was computed using a weighted sum of the extended power spectral density over the eigenvalues of the unperturbed operator. In this paper, we show how to con...

The transport of photons in steady, spherical, scattering flows is investigated. The moment equations are solved analytically for accretion onto a Schwarzschild black hole, taking into full account relativistic effects. We show that the emergent radiation spectrum is a power law at high frequencies with a spectral index smaller (harder spectrum) than in the non–relativistic case. Radiative tran...

The approach made in this paper is to compute texture based on statistical and spectral measures for extracting quantitative features of scanning electron microscopy (SEM) images of the failure pattern of natural rubber (NR) vulcanizates subjected to tear fracture. The various statistical properties measured include detection of average intensity (mean), average contrast (standard deviation), s...

Hadronic decays of the τ lepton provide a clean environment to study hadron dynamics in an energy regime dominated by resonances, with the interesting information captured in the spectral functions. Recent results from ALEPH on exclusive channels are presented, with some emphasis on the ππ final state which plays a crucial role for the determination of the hadronic contribution to the muon anom...

Coupling of acoustic phonons to excitons in single wurtzite-type GaN/AlN quantum dots is investigated in detail by cathodoluminescence experiments and compared to theory. Numerical simulations of the coupling in the framework of the independent Boson model with realistic wave functions based on 8-band k · p theory show good agreement with observed emission line shapes. We analyze the influence ...

The central thalamus plays an important role in the regulation of arousal and allocation of attentional resources in the performance of even simple tasks. To assess the contribution of central thalamic neurons to short-term adjustments of attentional effort, we analyzed 166 microelectrode recordings obtained from two rhesus monkeys performing a visuomotor simple reaction time task with a variab...

In this paper, we study a matricial version of a generalized moment problem with degree constraint. We introduce a new metric on multivariable spectral densities induced by the family of their spectral factors, which, in the scalar case, reduces to the Hellinger distance. We solve the corresponding constrained optimization problem via duality theory. A highly nontrivial existence theorem for th...