We show that the use of prior information derived from former empirical findings and/or subject matter theory regarding the lag structure of the observable variables together with an AR process for the error terms can produce univariate and single equation models that are intuitively appealing, simple to implement and work well in practice. JEL Classification

The results of ab initio calculation of E1 amplitudes, lifetimes, and polarizabilities for several low-lying levels of ytterbium are reported. The effective Hamiltonian for the valence electrons Heff has been constructed in the frame of CI+MBPT method and solutions of many electron equation HeffΦn = EnΦn are found. PACS. 31.15.Ar, 32.10.Dk, 32.10.Fn Typeset using REVTEX

By making use of an ansatz for the eigenfunction, we obtain the exact solutions to the Schrödinger equation with the anharmonic potential, V (r) = ar 2 + br−4 + cr−6, both in three dimensions and in two dimensions, where the parameters a, b, and c in the potential satisfy some constraints. PACS numbers: 03.65.Ge.

Stochastic models of some aspects of the electrical activity in the nervous system at the cellular level are developed. In particular, models of the subthreshold behavior of the membrane potential of neurons ar~ consid~r~d alon& ~ith the problem of parameter estimation of physiologically meaningful parameters of the developed models. Both ordinary and partial stochastic differential equation mo...

By applying a factorization ansatz for the eigenfunctions, an exact analytic solution of the stationary Schrödinger equation in two dimensions is obtained with the inverse-power potential V (r) = Ar−4 + Br−3 + Cr−2 + Dr−1. PACS numbers: 0365-w, 0365Ge ∗Electronic address: [email protected]

Material structures and chemical equilibrium are important learning units in high school chemistry. In this study, an augmented reality (AR) system is developed to assist students Students can use AR cards conduct virtual chemistry experiments, the submicroscopic view of a reaction will be displayed according equation specified by reactants coefficients on cards. They change observe experimenta...

Abstract In this paper, the prediction of unsteady flow field over typical high aspect ratio (AR) wings in transonic regime but below sonic Mach number is interest. The methodology adopted a computational approach based on small disturbance potential equation. It shown that higher AR generally have lift coefficient as well lift-to-drag ratio. With NASA’s common research model (CRM) wing, there ...

we assume that each valence quark in a nucleon is in a phenomenological modified harmonic oscillator potential of the form: ( l+yo) (ar +br+cr +dr ), where a, b, c and d are constants and ? is one of the dirac matrices. then by making use of a suitable ansatz, the dirac equation has a very simple solution which is exact. we then have calculated the static properties of the nucleon in the ground...

Abstract Tunable diode laser absorption spectroscopy was used to record the space-and time-resolved number density of argon metastable atoms, Ar(1s 3 ) (Paschen notation), in plane-to-plane dielectric barrier discharges (DBDs) operated a Penning Ar–NH mixture at atmospheric pressure. In both low-frequency (LF 650 V, 50 kHz) and dual LF–radiofrequency (RF 190 5 MHz) α – γ mode, revealed single p...