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In this paper the Two-Scale Model has been used to derive the theoretical Normalized Radar Cross Section (NRCS) for sea clutter in the L-band, taking into account also the circular polarization of GPS signals. Using this theoretical model and the theoretical formula for NRCS, authors aim to investigate the possibility to extend target detection through GPS signals in backscattering configuration by...
In this chapter a numerical mathematical model of the Si and GaAs Schottky-barrier field-effect transistor is considered. This model permits current and thermal modes of these devices to be investigated when reaction of powerful electromagnetic pulses takes place. In this case changing characteristics of semiconducting materials with increasing temperature is taken into account. Using the mathematical...
Transportation engineering is one of the most popular area of Operations Research in which fractional programming is used. In this study, we present two algorithms to find initial basic feasible solution of a linear fractional transportation problem. Also we present a methodology to find optimal solution of the stated problem. Using simulation experiments on large number of examples we compare the...
The Power quality has become one of the most vital issue to both electric utilities and end level users of electric power. Automation has completely changed the load nature due to widespread use of power electronic based drives such as adjustable speed drives, Energy efficient lighting, PC's, office accessories etc. All power electronic based sensitive equipments are the major fatalities of power...
Image registration has evolved independently, and occupied many research areas starting from underwater to earth to space. Selecting a most suitable similarity measure from the existing image similarity models is a challenging research activity in the digital image processing area. Even though there are many image registration models, similarity model is selected for this research study, because of...
This article presents the preliminary results of a method for determining ground thermal diffusivity using temperatures recorded at different depths below the surface ground. The theoretical framework is based on the regular flow of heat through the surface, and the experimental framework involves measuring temperatures with sensors placed inside a geothermal borehole. The project has been made possible...
Axial Flux Machines are favorable option for Low speed applications because of the flexibility to have higher pole number. In this paper, an overview of axial flux machine is given in the first part. In the second part, the lumped parameters are determined for the axial flux induction machine which has sinusoidal winding distribution. And a model is developed based on the derived system equations...
This paper aims to introduce some key parameters for the tracking application in wireless sensor networks. In this work the LEACH protocol with J-sim simulation tool has been implemented, and consequently some useful trade-off analysis results among the EDCR (Energy, Density, Coverage and Reliability) parameters has been obtained. Based on these results, an intelligent evaluation model is proposed...
The increased demand for hospital services has saturated the capacity of Hospital Departments (HDs) that require suitable tools for the efficient management of resources and of flows of patients, staff, and drugs. The paper proposes a model based on a three level strategy to design at the tactical level a HD. The first module employs a Unified Modeling Language tool and a timed Petri net model to...
The adsorption-desorption (AD) noise in nanowire FET biosensors is analyzed, which manifests itself in the form of gate voltage fluctuations resulting from the fluctuations of the number of adsorbed particles. The derived theoretical model of the fluctuations takes into account the mass transfer effects. The numerical calculations show that when the mass transfer is slow, the low-frequency amplitude...
This paper addresses the management and performance analysis of the pulmonology department of the general hospital of Bari, Italy, focusing on the department workflow and drug distribution system. To this aim, we present a discrete event system model which can be employed as a support for taking decisions regarding the information and automation integration in order to improve the drug procurement...
AVO (Amplitude Vs Offset) seismic inversion is a technique of tomographic seismic imaging for creating a model in stack-velocity space that can correctly reconstruct the measured AVO seismic dataset. This is usually implemented by minimizing a least squares inversion algorithm. This algorithm has limitations because it reconstructs seismic images with artifacts yield by impulsive noise contained in...
Security devices are vulnerable to differential power analysis (DPA) that reveals the key by monitoring the power consumption of the circuits. In this paper, we present the first DPA attack against an FPGA implementation of the camellia encryption algorithm with all key sizes and evaluate the DPA resistance of the algorithm. The Camellia cryptographic algorithm involves several different key-dependent...
Integration of ADAMS with MATLAB for designing and developing mechatronics system is presented in this paper. The integrated platform provides an avenue for realizing design loop for developing a mechatronics system without the need for building prototypes. The virtual prototype developed in ADAMS can be used to investigate dynamic behavior in a 3-dimensional environment. Though ADAMS has the capability...
Control of vehicle formations is an area of great interest that requires knowhow from several scientific areas such as control theory, vision, communication system, etc. In this work, several approaches to maintain a formation of vehicles are explained and tested. In this paper, the approach towards formation control is achieved through position based visual servoing (PBVS). In PBVS, a cartesian space...
The objective of this work is to develop and implement a computer program of a methodology for the identification and ranking of failure modes of equipment in operation on electric power substations. It is proposed to rank the problems (failure modes) assuming a multicriteria context in opposition to the empirical methods today adopted. The methodology to support multicriteria decision PROMETHEE is...
We propose a new method for modeling and quantifying bounded Gaussian jitter (BGJ), as well as bounded Gaussian noise (BGN). The validity and accuracy of the method are illustrated and verified both in theory and experiments. We then demonstrate the applications of this new method for jitter and noise estimation and testing, especially for total jitter (TJ) and total noise (TN) at a targeting bit...
We analyze a set quaternionic methods for studying the time-dependent Maxwell equations in the presence of sources for inhomogeneous media, the electrical Impedance Equation with a conductivity function depending upon three spatial variables, the Beltrami Fields and the Force-Free Magnetic Fields with non-constant proportionality factors. For the last three systems, we study some particular cases...
The paper presents the design of a discrete linear quadratic gaussian (DLQG) compensator for SSR damping which includes a full order Kalman filter to estimate all the states of the system and a full state feedback regulator. The controller is tested on IEEE First Benchmark model for SSR studies. A discrete linear-time invariant (LTI) model of a thyristor-controlled series capacitor (TCSC) in the synchronously...
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