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In the integral equation method for solving electromagnetic problems with thin conducting structures, there are several unfavorable factors. The individual electric field integral equation (EFIE) and magnetic field integral equation (MFIE) may deteriorate the conditioning of matrix equations due to their degeneration when the thickness reduces. Also, there are more near-interaction evaluations in...
Volume integral equations (VIEs) are usually solved by the method of moments (MoM) with the Schaubert-Wilton-Glisson (SWG) basis function. The SWG basis function requires conformal meshes in geometric discretization and may be inconvenient for inhomogeneous problems. In this work, we propose a point-matching method for solving the VIEs without using any basis function. The method can allow an inhomogeneity...
In this paper Gulf of Mexico wind conditions are analyzed to distinguish suitable regions for wind farm development. A turbine merit rating parameter is introduced to evaluate the combined effects of rotor size, turbine rating and economical boundary conditions. An analytical approach is then taken to match local site conditions with a suitable wind turbine rating and rotor size configuration. Hurricane...
Lipoprotein particles (LPPs) are biological nanoparticles whose physiological roles are greatly influenced by their sizes. The four major classes of LP are: very low density lipoprotein, intermediate density lipoprotein, low density lipoprotein (LDL) and high density lipoprotein. Since the predominance of small, dense LDLs is associated with increased risk of coronary artery disease (CAD) and diabetes...
Approaches based on the measurement of the received signal strength difference (RSSD) for pairs of sensors offer interesting possibilities for using networks of simple sensors to geolocate radio frequency emitters. This paper compares the performance of four Least Squares-based RSSD geolocation algorithm implementations for non-cooperative emitters. Both simulated and measured data are used to compare...
In this paper, we investigated the effect of diluted Gd doping on the magnetic properties of Fe50Co50 thin films by Vibrating Sample Magnetometer (VSM) and Ferromagnetic Resonance (FMR). The Gilbert damping coefficient corresponding to magnetization switching time was also determined.
Detailed step-by-step numerical procedures for computing the normalized detection threshold for the FFT J-out-of-L detector are presented. Accurate approximations are also provided for cases where numerical procedures break down due to rounding errors. Some of the numerical procedures detailed here are also useful in other signal processing problems.
This paper describes how variations in elevation angle of incoming signals can affect the accuracy of Adcock direction finders (ADFs) in estimating the azimuth direction of arrival (DOA). In accordance with Adve and Sarkar [2000], Maxwellpsilas equations are solved to calculate the mutual coupling characterizing a typical ADF. The voltages at the antenna elements are calculated under several plane-wave...
This paper presents the analysis of the equivalent 10-Hz voltage flicker measurement ( Delta V10) based on the IEC flickermeter standard. The Delta V10 method has been employed to evaluate voltage flicker for more than two decades in several Asian countries and not been updated since 1978. Therefore, a careful inspection from various aspects was made against the Delta V10 method. The results uncover...
Gate-all-around n-MOSFETs with Si-nanowire (~7 nm) as the channel body are fabricated and characterized for their low-temperature behavior (~5 K to 295 K). IDS-VGS characteristics at low VDS (~50 mV) exhibit a decrease in current with decreasing temperature in strong inversion up to about ~200 K. However, at high VDS, drain current reverts to typical temperature behavior, i.e., IDS increases with...
A Chebyshev-based state representation method is developed for solving optimal control problems involving unconstrained linear time-invariant dynamic systems with quadratic performance indices. In this method, each state variable is represented by the superposition of a finite-term shifted Chebyshev series and a third order polynomial. In contrast to solving a two-point boundary-value problem, here...
This paper discusses the design of a solar heating system using periodic optimization techniques. The disturbance signals, ambient temperature and solar insolation, are assumed to be periodic with a period of 24 hours. A bilinear system is used to model the solar plant. It is assumed that the system response is periodic and a performance measure is selected which takes the time average over one period...
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