Advisors
Now showing items 1-12 of 12
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Capacity and spectrum efficiency analysis of an asymmetric PMR system with DAB downlink
(Bilkent University, 2003)Different trunked Private Mobile Radio (PMR) systems have been designed over the last several decades, all of which have symmetric downlink and uplink channel capacities. Due to this symmetry, those systems may not be ... -
Convection-reaction equation based magnetic resonance electrical properties tomography (cr-MREPT)
(Bilkent University, 2013)Tomographic imaging of electrical conductivity and permittivity of tissues may be used for diagnostic purposes as well as for estimating local specific absorption rate (SAR) distributions. Magnetic Resonance Electrical ... -
Design and implementation of a PC-based heart rate variability and respiration recording system
(Bilkent University, 2005)Determination of the exact effects of respiration rate on the heart rate variability requires comprehensive experimental studies. In this context, these two quantities should be analyzed simultaneously. In this thesis, ... -
Development of image reconstruction algorithms for three dimensional magnetic resonance-electrical impedance tomography
(Bilkent University, 2003)The electrical resistivity of biological tissues differ among various tissue types. Human body has a large resistivity contrast between a wide range of its tissues. The aim of this study is to reconstruct conductivity ... -
Finite element method based simulation, desing, and resonant mode analysis of radio frequency birdcage coils used in magnetic resonance imaging
(Bilkent University, 2012)Radio Frequency (RF) birdcage coils are widely used in Magnetic Resonance Imaging (MRI) since they can generate very homogeneous RF magnetic field inside the coil and have high signal-to-noise ratio (SNR). In practice, ... -
Finite element method based simulations of low frequency magnetic field in seawater
(Bilkent University, 2013)Propagation properties of the electromagnetic waves in seawater are different than in air (vacuum) due to electrical conductivity (σ) and high relative permittivity (εr) of the seawater. Numerically it is hard to solve ... -
FPGA based pulse width modulation drive for underwater low frequency magnetic field generation
(Bilkent University, 2014)Main focus is to design an electronic circuit which drives a coil for producing underwater magnetic fields at aimed distances. This circuit should handle AC, DC drive individually and both at the same time. After some ... -
Low-frequency conductivity imaging using MRI gradient induced currents
(Bilkent University, 2016-09)Due to the switching of Magnetic Resonance Imaging (MRI) gradient fields, electric fields are induced in imaged subjects which give rise to `subject eddy currents'. The feasibility of low-frequency conductivity imaging ... -
Multichannel and phase based magnetic resonance electrical properties tomography
(Bilkent University, 2016-09)Imaging of electrical properties (EPs, i.e. conductivity and dielectric permittivity) of tissues give valuable information about the physiological and pathological conditions of tissues. Among the EP imaging modalities, ... -
Real-time cancellation using ICA-PSO-PE
(Bilkent University, 2012)A real-time implementable noise cancellation algorithm is developed. Speech and noise sources are not known but only their mixtures are observed. A mobile radio system is modelled with instantaneous mixture model as the ... -
XML-based framework for web-based neurocardiovascular simularion
(Bilkent University, 2004)Mathematical modeling and numerical simulation of neurocardiovascular control system has played an important role in better understanding of its function and diagnosis of neurological disorders. Current simulations of ...
