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The location of an electromagnetic, acoustic or seismic source can be determined by spatially separated synchronized receivers. To locate the target, hyperbolic lines of position are defined by using the time differences of arrival (TDOA), between these receivers. Then the target is positioned at the intersection point of these lines. In literature, most of the TDOA based methods assume that the propagation...
Considering a time difference of arrival (TDOA) localisation system, it is well known that the accuracy depends on the transmitter-receiver geometry, time differences estimation error and the selection of the localisation algorithm. Although many studies related to TDOA estimation and emitter location finding can be found in the literature, the effect of transmitter??receiver geometry on positioning...
Finite element method (FEM) is a widely used method in the simulation of virtual surgery since it can model elasticity behavior of soft tissues accurately. Linear FEM uses constant stiffness matrix that achieves fast and stable simulation but objects increase unnaturally in volume under large rotational deformation. Nonlinear FEM, on the other hand, models large deformation correctly but it is computationally...
Surface EMG signals are taken from the human muscle and have some advantages over the needle electrode originated EMG's recordings. In this study, we have processed surface EMG's coming from the normal subject set (7 female and 7 male) to investigate the effects of the muscle fatigue on the 50% maximum voluntary contraction condition. We have observed great correlation between three features which...
Experimental performances of blind adaptive training algorithms have been evaluated in real-time WiMax (3.5 GHz) radio channels in this paper. Inter symbol interference (ISI) cancellation and mean square error (MSE) performances of the most commonly used blind equalization techniques, constant modulus algorithm (CMA), and CMA based modified CMA (M-CMA) and normalized CMA (N-CMA) algorithms are investigated...
Recently, a quantum media converter from a photon qubit to an electron spin qubit was proposed for quantum repeaters. Quantum information can take several different forms and it is preferable to be able to convert among different forms. One form is the photon polarization and another is the electron spin polarization. Photons are the most convenient medium for sharing quantum information between distant...
Catheter-based epicardial mapping is possible with two access methods: transthoracic access and transvenous access. Transthoracic access requires lengthy sequential mapping procedures and stable arrhythmias. Transvenous access uses the multielectrode (4-to-20 electrodes) catheters placed in the coronary veins, however, leaves most of the epicardium inaccessible to direct measurement. The aim of this...
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