Browsing by Keywords "Mathematical analysis"
Now showing items 120 of 23

Algebraic reconstraction for 3D magnetic resonanceelectrical impedance tomography (MREIT) using one component of magnetic flux density
(Institute of Physics and Engineering in Medicine, 2004)Magnetic resonanceelectrical impedance tomography (MREIT) algorithms fall into two categories: those utilizing internal current density and those utilizing only one component of measured magnetic flux density. The latter ... 
Analysis of blood cell production under growth factors switching
(Elsevier B.V., 2017)Hematopoiesis is a highly complicated biological phenomenon. Improving its mathematical modeling and analysis are essential steps towards consolidating the common knowledge about mechanisms behind blood cells production. ... 
Analytical regularization based analysis of a spherical reflector symmetrically illuminated by an acoustic beam
(IEEE, 2000)A mathematically accurate and numerically efficient method of analysis of a spherical reflector, fed by a scalar beam produced by a complex source point feed, is presented. Two cases, soft and hard reflector surface, are ... 
Atomic scale study of superlow friction between hydrogenated diamond surfaces
(American Physical Society, 2004)Strong attractive interaction between two clean diamond (001) slabs turns repulsive upon the hydrogenation of surfaces. This repulsive interaction serves as if a boundary lubricant and prevents the sliding surfaces from ... 
Dynamic correlation effects on the plasmon dispersion in a twodimensional electron gas
(The American Physical Society, 2003)The chargedensity oscillations (plasmons) of a lowdensity twodimensional uniform electron gas are studied within the framework of finite temperature and frequency dependent (dynamic) version of Singwi, Tosi, Land, and ... 
Electron momentum and energy relaxation rates in GaN and AlN in the highfield transport regime
(The American Physical Society, 2003)Momentum and energy relaxation characteristics of electrons in the conduction band of GaN and AlN are investigated using two different theoretical approaches corresponding to two high electricfield regimes, one up to 12 ... 
Enhancing higher harmonics of a tapping cantilever by excitation at a submultiple of its resonance frequency
(American Physical Society, 200503)In a tappingmode atomic force microscope, the frequency spectrum of the oscillating cantilever contains higher harmonics at integer multiples of the excitation frequency. When the cantilever oscillates at its fundamental ... 
Graphene field effect devices operating in differential circuit configuration
(Elsevier, 2015)We study the concept of a basic building block for circuits using differential signaling and being based on graphene field effect devices. We fabricated a number of topgated graphene FETs using commercially available ... 
Identification of relative protein bands in polyacrylamide gel electrophoresis (PAGE) using a multiresolution snake algorithm
(Informa Healthcare, 199906)In polyacrylamide gel electrophoresis (PAGE) image analysis, it is important to determine the percentage of the protein of interest of a protein mixture. This study presents reliable computer software to determine this ... 
Josephson effect in superconductive SNS heterostructures with barriers
(The American Physical Society, 2003)The dc Josephson effect in a planar superconductornormalmetalsuperconductor (SNS) junction is studied in the existence of a δ barrier in the normal region. The Green function of the structure is obtained by solving the ... 
Mathematical analysis of colon glands for cancer diagnosis
(2009)Neoplastic diseases including cancer cause organizational changes in tissues. Histopathological examination, which is routinely used for the diagnosis and grading of these diseases, relies on pathologists to identify such ... 
Observerbased control of a class of chaotic systems
(Elsevier, 2001)We consider the control of a class of chaotic systems, which covers the forced chaotic oscillators. We focus on two control problems. The first one is to change the dynamics of the system to a new one which exhibits a ... 
On the stabilization of periodic orbits for discrete time chaotic systems
(Elsevier, 200502)In this Letter we consider the stabilization problem of unstable periodic orbits of discrete time chaotic systems. We propose a novel and simple periodic delayed feedback law and present some stability results. These results ... 
Persistent currents in helical structures
(American Physical Society, 2004)The recent discovery of mesoscopic electronic structures, in particular the carbon nanotubes, made necessary an investigation of what effect a helical symmetry of the conductor (metal or semiconductor) may have on the ... 
Point normal metalsuperconductor (NS) contact in nonballistic regime
(World Scientific, 2003)We analyze the point NS contact conductivity taking into account the depression of superconductivity at highinjection current density and Andreev reflection at the adaptive NS boundary. The dependence of the excess current ... 
Power dissipation analysis in tappingmode atomic force microscopy
(American Physical Society, 2003)In a tappingmode atomic force microscope, a power is dissipated in the sample during the imaging process. While the vibrating tip taps on the sample surface, some part of its energy is coupled to the sample. Too much ... 
Quantum effects of thermal conductance through atomic chains
(2001)We present a formalism for an atomic scale study of phononic heat transfer. The expression of thermal energy current can be cast in the Landauer form and incorporates the transmission coefficient explicitly. Calculation ... 
Radiochemical study of Co2+ sorption on chlorite and kaolinite
(Akademiai Kiado Rt., 1999)In this work, the sorption behavior of Co(II) ions on natural chlorite and kaolinite as a function of time, concentration and temperature was studied. 60Co radiotracer method and the batch technique were used. The kinetic ... 
Resonant harmonic response in tappingmode atomic force microscopy
(American Physical Society, 2004)Higher harmonics in tappingmode atomic force microscopy offers the potential for imaging and sensing material properties at the nanoscale. The signal level at a given harmonic of the fundamental mode can be enhanced if ... 
Role of the environmental spectrum in the decoherence and dephasing of multilevel quantum systems
(The American Physical Society, 2005)We examine the effect of multilevels on decoherence and dephasing properties of a quantum system consisting of a nonideal two level subspace, identified as the qubit, and a finite set of higher energy levels above this ...