General formulas are presented for computing a lower bound on localization and moment error for electroencephalographic (EEG) or magnetoencephalographic (MEG) current source dipole models with arbitrary sensor array geometry. Specific EEG and MEG formulas are presented for multiple dipoles in a head model with 4 spherical shells. Localization error bounds are presented for both EEG and MEG for ...

There are presented results of experimental-laboratory testing a new method to diagnose the right ventricular hypertrophy. The method is based upon the dipole electrocardiotopography (DECARTO) technique, proposed formerly by the authors and successfully applied for recognition of the left ventricular hypertrophy. The results obtained on reliably verified groups of normal and diseased persons sh...

We compare four different model geometries for particles with small-scale surface roughness. The geometries are based on regular and stochastic surface perturbations, as well as on 2Dand 3D-roughness models. We further compare T-matrix and discrete dipole computations. Particle size parameters of 5 and 50 are considered, as well as refractive indices of 1.6+0.0005i and 3+0.1i. The effect of sma...

Abstract—This paper describes a wideband double-dipole Yagi-Uda antenna fed by a microstrip-slot coplanar stripline transition. The conventional dipole driver of a Yagi-Uda antenna is replaced by two parallel dipoles with different lengths to achieve multi-resonances, and a small, tapered ground plane is used to allow flexibility in the placement of a pair of reflectors for effective reflection...

In view of the development for TD-SCDMA communication system and combine with the miniaturization technology of smart antenna, by using balun feeding structure and consist of splitters and neural networks, this paper proposed a four units of dual polarized and a eight units of +45/-45 polarized antenna array which on the basis of printed dipole antenna. The simulation results show that the isol...

Bose-Einstein condensation of dilute trapped atomic gases @1,2# essentially depends on the interparticle interactions. In most experiments so far the dominated interactions have been short-range van der Waals forces which are characterized by the s-wave scattering length a. Spatially homogeneous condensates with positive scattering length ~repulsive interaction! are stable while condensates wit...

A robust and versatile method is demonstrated to maintain, for an arbitrary time, quasiconstant and strong orientation for molecules with minute dipole moments. The procedure is based on submitting molecules in cyclic wave packets to periodic trains of nonresonant pulses in an electrostatic field. We show that approximate cyclic states can be created by suddenly switching off a long laser pulse...

The microwave power transmission is an approach for wireless power transmission. As an important component of a microwave wireless power transmission systems, microwave rectennas are widely studied. A rectenna based on a microstrip dipole antenna and a microwave rectifier with high conversion efficiency were designed at 2.45 GHz. The dipole antenna achieved a gain of 5.2 dBi, a return loss grea...

This paper introduces a novel variation of the vee dipole antenna consisting of two coplanar vee dipoles with a common feed point. It is referred to as a double-vee dipole. Radiation characteristics of the double-vee dipole antenna are investigated numerically and experimentally. It is shown that the double-vee dipole can provide significantly higher directivity and lower sidelobes and back rad...

We examined the uncertainty of two-dimensional (2D) resistivity method using conceptual cavity models. The experimental study was conducted to validate numerical model results. Spatial resolution and sensitivity perturbations were also assessed checkerboard tests. Conceptual models simulated generate synthetic data for dipole-dipole (DD), pole-dipole (PD), Wenner–Schlumberger (WS), pole-pole (P...