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[en] Complete text of publication follows. The seismic and electric records made in one point (Corinth gulf, Greece) and representing sets of discrete signals are considered. Often a seismic recording is similar to electric, especially in intervals of longitudinal waves for weak earthquakes. The problem consists to find of transfer function between these two records. The Lagrange interpolation allows obtaining analytical representation for a discrete signal. In work the formal analytical dependence between electric and seismic records is constructed. The formula (transfer function) represents the sum of the entire functions of exponential type. It is very complicated. However it is possible to extract from it the simple principal part E(t) = kS (t-a), E(t),S(t) Lagrange series for electric and seismic signals, t- current coordinate (record time). Parameters a and k give the minimum deviation of the real and reconstructed records in L2. They have been obtained as averages on the basis of several 'enough good' records of electric and seismic signals. Advantage of such approach consists that for the analysis of signals it is possible to use the theory of the entire functions. Let's notice, when the parameter is small enough, it is possible to use series expansion E(x) = k(S(x)-aS'(x) + a2/2 S'(x) + ...). Work was supported by the Russian foundation for basic research (No. 09-05-00767-a).
[en] Existing theories predict that the higher the mode number is of a longitudinal bunched beam instability, the higher a likely to be the frequency (or range of frequencies) of the instability excitation fields. In this paper a different result is found with all modes having a similar upper frequency limit for the fields but with the odd- and even-order modes having a dissimilar range for the possible frequencies. The relevance for uncoupled bunch, coupled bunch and mode coupling instabilities is discussed
[en] Different determination of the momentum of a wave oscillations are considered. The determinations correspond in the magnetic hydrodynamics to the Lagrange function invariance relative to different shear transformations. It is shown that the momentum value of the Alfven wave envelope, calculated on the base of the adopted in electrodynamics of continuous media determination, does not coincide with the total momentum of medium particles and electromagnetic field in the region of envelope localization
[en] Three different methods of setting the hadronic energy scale of a longitudinally segmented calorimeter system are compared with each other. The merits of these methods have been studied with test beam data from the CDF Plug Upgrade Calorimeter. It turns out that one of the (commonly used) calibration methods introduces a number of undesirable side effects, such as an increased hadronic signal nonlinearity and trigger biases resulting from the fact that the reconstructed energy of hadrons depends on the starting point of their showers. These problems can be avoided when a different calibration method is used. The results of this study are applied to determine the e/h values of the calorimeter and its segments
[en] The lower bound customarily cited for Poisson's ratio ν, −1, is derived from the relationship between ν and the bulk and shear moduli in the classical theory of linear elasticity. However, experimental verification of the theory has been limited to materials having ν ⩾ 0.2. From consideration of the longitudinal and biaxial moduli, we recently determined that the lower bound on ν for isotropic materials from this theory is actually 1/5 . Herein we generalize this result, first by analyzing expressions for ν in terms of six common elastic constants, and then by considering arbitrary strains. The results corroborate that ν≥ 1/5 for classical linear elasticity to be applicable. Of course, a few materials exist for which ν < 0.2, thus deviating from this bound; accurate analysis of their mechanical behavior requires more sophisticated elasticity models. (paper)
[en] We present two equivalent consistency checks of the momentum sum rule for double parton distributions and show the importance of the inclusion of the so-called inhomogeneous term in order to preserve correct longitudinal momentum correlations. We further discuss in some detail the kinematics of the splitting at the basis of the inhomogeneous term and update the double parton distributions evolution equations at different virtualities
[en] The calculation of longitudinal structure function from Dokshitzer-Gribov-Lipatov-Altarelli-Parisi (DGLAP) evolution equation in next-to-leading order (NLO) at small-x is presented. The calculation of FL is important for the phenomenological study of gluon distribution function inside the nucleon. Here we use Taylor Series Expansion method to solve the evolution equation for small-x and thus obtain t-evolution of FL structure function. The calculated results are compared with H1 and ZEUS data and results of Block and Donnachie-Landshoff (DL) models. (author)
[en] The process of turn-on time control of a phase retarder based on nematic liquid crystal (NLC) by using an additional control voltage has been investigated theoretically and experimentally. A theoretical model of reorientation process of NLC molecules in the crossed electric fields (a traditional transverse field and an additional longitudinal field) is proposed. Dynamics of reorientation of NLC molecule is depending on the ratio of amplitudes of control voltages is considered. The opportunity of reduction of turn-on time of the NLC-based phase retarder is shown when driving is realized by using two control voltages.
[en] This paper proposes a modified strong field approximation model for evaluating nondipole effects on the ionization of an atom in an intense laser field. The photoelectron longitudinal momentum distributions (PLMD) of a hydrogen-like atom exposed to a mid-infrared laser field is calculated. The theoretical results indicate an obvious asymmetry in the PLMD, and an offset of the PLMD peak appears in the opposite direction of the beam propagation due to nondipole effects. The peak offsets of the PLMD increased with the laser intensity, imposed by the initial state of the hydrogen-like atom. (paper)