background : the recognition of road traffic noise as one of the main sources of environmental pollution has led to develop models that enable to predict noise level from fundamental variables. traffic noise prediction models are required as aids for designing roads and highways. in addition, sometimes are used in the assessment of existing or envisaged changes in traffic noise conditions. in t...

This paper presents a novel hierarchical shape description scheme based on propagating the gradient of the image. The propagated gradient eld collides at centers of con-vex/concave shape components, which can be detected as points of high directional disparity. A novel vectorial disparity measure called Cancelation Energy is used to measure this collision of the gradient eld, and local maxima o...

This paper investigates the use of the guard traces to improve the Time-Domain Transmission (TDT) waveform and eye diagram for a flat spiral delay line. Two types of guard trace are adopted to implement and analysis in microstrip line and stripline structures. One is Two Grounded Vias type Guard Trace (TGVGT) and the other is Open-Stub type Guard Trace (OSGT). The timedomain analysis results by...

A way to classify the security level of a cryptographic device is to estimate the effort an adversary has to invest in an attack to be successful. While there are metrics and mathematical models to determine the complexity of attacks on cryptographic algorithms and protocols, estimating the security level of an implementation is more complicated. This is because attacks on the implementation de...

We propose a relaying scheme based on superposition coding (SC) with discrete adaptive modulation and coding (AMC) for a three-node wireless relay system, based on half duplex transmission, where each node decodes messages by successive interference cancelation (SIC). Unlike the previous works where the transmission rate of each link is assumed to achieve Gaussian channel capacity, we design a ...

The effect of perturbative QCD interactions on the high energy scattering of electroweak vector bosons, when the exchanged channel has pion quantum numbers, is considered. It is shown that transverse momentum diagrams appear that have couplings in which the chiral anomaly appears. As a consequence, there is a large transverse momentum divergence that produces an enhancement of the scattering am...

Nontrivial translation matrices occur for spin (A,B) ⊕ (C,D) with | A − C | = | B−D | = 1/2, necessarily associating a (C,D) field with a spin (A,B) field. Including translation matrices in covariant non-unitary Poincaré representations also introduces new gauge terms in the construction of massless particle fields from canonical unitary fields. In the usual procedure without spacetime translat...

An infinitely flanged coaxial line is analytically solved with the mode-matching technique and Green’s function to propose a precise yet fast-convergent scattering solution for complex permittivity measurement. Based on virtual current cancelation, we formulate the open half-space fields in terms of coaxial modes and related Green’s functions and thus obtain the simultaneous equations with rapi...