The paper purpose is to present some aspects regarding the control system of unmanned aerial vehicle UAV, used to local observations, surveillance and monitoring interest area. The calculus methodology allows a numerical simulation of UAV evolution in bad atmospheric conditions by using nonlinear model, as well as a linear one for obtaining guidance command. The UAV model which will be presente...

We investigate the evolution of the galaxy luminosity function from the VIMOS-VLT Deep Survey (VVDS) from the present to z = 2 in five (U , B, V , R and I) rest-frame band-passes. We use the first epoch VVDS deep sample of 11,034 spectra selected at 17.5 ≤ IAB ≤ 24.0, on which we apply the Algorithm for Luminosity Function (ALF), described in this paper. We observe a substantial evolution with ...

We present the evolution of the volume averaged properties of the rest-frame optically luminous galaxy population to z ∼ 3, determined from four disjoint deep fields with optical to near-infrared wavelength coverage. Our use of independent lines of sight substantially mitigates field-to-field variations. We select galaxies above a fixed rest-frame V -band luminosity of 3× 10 h 70 L⊙ and charact...

A Gabor system generated by a window function φ and a rectangular lattice aZ× Z/b is given by G(φ, aZ× Z/b) := {e−2πint/bφ(t−ma) : (m,n) ∈ Z× Z}. One of fundamental problems in Gabor analysis is to identify window functions φ and time-frequency shift lattices aZ × Z/b such that the corresponding Gabor system G(φ, aZ × Z/b) is a Gabor frame for L(R), the space of all square-integrable functions ...

Described is a hardware architecture for combining the outputs of a number of zbuffer rendering engines to achieve higher performance than is possible with a single renderer. It allows a combination of renderers to achieve the same price/performance ratio as the individual renderers that compose it, and can be extended to create systems with arbitrarily high performance. The described architect...

By sampling the window of a Gabor frame for L(R) belonging to Feichtinger’s algebra, S0(R), one obtains a Gabor frame for l(Z). In this article we present a survey of results by R. Orr and A.J.E.M. Janssen and extend their ideas to cover interrelations among Gabor frames for the four spaces L(R), l(Z), L([0, L]) and C. Some new results about general dual windows with respect to sampling and per...

We measure the evolution of the rest-frame K-band Fundamental Plane from z = 1 to the present by using IRAC imaging of a sample of early-type galaxies in the Chandra Deep Field-South at z ∼ 1 with accurately measured dynamical masses. We find that M/LK evolves as ∆ ln (M/LK) = (−1.18± 0.10)z, which is slower than in the B-band (∆ ln (M/LB) = (−1.46 ± 0.09)z). In the B-band the evolution has bee...

A novel perceptual postfilter is introduced. For each frame, the filter gains, z, are estimated given a vector, y, of the quantized LSFs and the long-term prediction gain of the corresponding frame. The proposed perceptual postfilter is derived from an optimal MMSE estimator, i.e. the estimated gain vector is ẑ = E{z|y}. The MMSE estimator is based on the conditional pdf of z given y, which is ...

Within front-form dynamics and in the Breit frame where initial and final three-momenta of the system are directed along the z axis, Poincaré covariance constrains the current operator only through kinematical rotations around the z axis. Therefore, in this frame the current can be taken in the one-body form. Applications to deep inelastic structure functions in an exactly solvable model and to...

for radiation by the source in the (inertial) lab frame where the system has velocity v along the polar (z, z ) axes of the spherical coordinate systems (r, θ, φ) and (r , θ , φ ), β = v/c and γ = 1/ √ 1− β, with c being the speed of light in vacuum. Comment on the angular distribution of radiation as detected by distant, fixed observers in the lab frame. Comment also on the case of acoustic ra...