Browsing by Author "76431c9b-f722-4181-9233-7582ca057fbe"
Now showing items 1-20 of 39
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A review study of photovoltaic array maximum power tracking algorithms
(Springer Singapore, 2016)There are numerous maximum power point tracking (MPPT) algorithms for improving the energy efficiency of solar photovoltaic (PV) systems. The main differences between these algorithms are digital or analog implementation, ... -
Design of Voltage control Oscillator using Nonlinear Composite Right/Left-Handed Transmission Line
(2016)In the present work, we propose a voltage control oscillator (VCO) at high frequency consists of nonlinear composite right/left-handed transmission line (CRLH-TL) loaded with Resonant Tunneling Diode (RTD). We designed ... -
Dispersion Characteristics of Graphene Surface Plasmon Four Layers Waveguide
(الجامعة الإسلامية - غزة, 2017)A four layer waveguide has been introduced. Graphene layer is separate by metamaterial layer (MTM) from a plasmonic layer The dispersion characteristics of the propagation of TM surface Plasmon through the waveguide structure ... -
Double-Negative Metamaterial Optical waveguide Behavior Subjected to Stress
(الجامعة الإسلامية - غزة, 2008)Stress effect on the behavior of optical waveguide sensor consists of dielectric slab inserted between metamaterial (MTM) cladding and substrate is investigated by using numerical calculations. Several MTMs with different ... -
Educational Background
(1997)▪ Introducing a new photonic structure, which is composed of alternating lamellae of MTMs and Dielectric to extend the applications of photonic crystals (PCs).▪ Use computing approach based on data mining techniques to ... -
Experimental investigation of polarization rotation in twisted optical fibers
(IEEE, 2009)The twist induced polarization rotation in birefringent optical fibers is well understood and has been treated in the late seventies. We recently derived a formulation of the polarization rotation in twisted optical fibers ... -
Experimental investigation on polarization rotation in twisted optical fiber using laboratory coordinate system
(Taylor & Francis Group, 2009)Recently, a formulation of the polarization rotation in twisted optical fibers was derived using a coupled-mode approach that, other than existing theories, employs a fixed reference frame. This is interesting for fiber ... -
Four-Mode Coupling in Fiber Bragg Grating Sensors Using Full Fields of the Fundamental Modes
(Taylor & Francis Group, 2010)The four-mode coupling in shear-strain-loaded fiber Bragg grating sensors has been demonstrated to have influence on the measured spectra and, thus, on the application of embedded fiber Bragg gratings for strain field ... -
Grain Size Distribution and topological correlations During Ostwald Ripening: Monte Carlo Potts model simulation
(2016)Practically most polycrystalline materials such as ceramics are sintered by liquid during processing; for example, tungsten carbide applied for cutting tools. In liquid sintering, grain structure is controlled by Ostwald ... -
Influence of magnetic field inhomogeneity on a magneto-optical current sensor
(Scientific Research Publishing, 2012)The growth in the capacity of electric power system creates a demand for the protection of relaying systems. Optical current transducers—OCT that are mainly made up of single mode optical fibers which are subjected to ... -
Magnetic field inhomogeneity induced on the magneto-optical current sensors
(IEEE, 2011)The growth in the capacity of electric power system creates a necessity demand on protection relaying systems. Optical current transducers (OCT) which are mainly single mode optical fiber subjected to Faraday rotation are ... -
Matlab/Simulink Modeling to study the effect of partially shaded condition on Photovoltaic array's Maximum Power Point
(2015)Solar energy is an important source of renewable energy due to the easy access to the source. One drawback in this system is achieving the maximum efficiency of the system. The photovoltaic (PV) cell is the fundamental ... -
Metallic nonlinear magnetooptical nonreciprocal isolator
(Urban & Fischer, 2011)In advanced optical fiber communication systems where reflection light might cause degradation of the signal quality, optical waveguide isolators play an important role. The effect of a metal layer with negative permittivity ... -
Metamaterial-dielectric photonics crystal waveguide structure
(Science Publishing Group, 2015)Photonic crystals (PCs) are a revolutionary science that has a great impact on the field of photonics. In purpose of extend the applications of PCs, we introduce a new photonic structure which is composed of alternating ... -
Microstructural simulation of grain growth in two-phase polycrystalline materials
(Science Publishing Group, 2006)A quantity of vital engineering materials is example of two-phase materials in which each phase may be polycrystalline. In numerous cases, both phases of these materials may undergo grain growth which may affect their ... -
Monte Carlo Implementation for Simulation of Ostwald Ripening Via Long Range Diffusion in Two-Phase Solids
(2017)Numerical simulations based on the Monte Carlo Potts model are used to study coupling of grain growth and Ostwald ripening in two-phase polycrystalline materials. The ratio of the grain boundary energy to the interphase ... -
Monte Carlo Potts Simulation of Grain Growth of Solid Grains Dispersed in a Liquid Matrix
(الجامعة الإسلامية - غزة, 2015)Liquid phase sintering is a process in which solid grains coexist with a liquid matrix. This process has important applications in processing of several engineering materials. Examples of these applications are high-speed ... -
Numerical modeling of microstructural evolution in metals, ceramics and rocks
(2002)Practically all metals, ceramics and rocks are polycrystalline materials which consist of a mixture of tiny grains (single crystals) which are" glued" together by interatomic forces. Polycrystals are intrinsically unstable. ... -
Numerical modeling of microstructural evolution in three-phase polycrystalline materials
(2009)Most engineering alloys are used in polycrystalline form. This means that they are made of a large number of grains. The structure formed by the grains is not steady but evolves with time. Understanding the material's ... -
Numerical simulations of coarsening of eutectoid structures: Implications for grain size in the lower mantle
(2001)Since it has been realized that the viscosity of the lower mantle depends on the grain size, several studies have been conducted to constrain grain size in the lower mantle. One of the problems is that the initial structure ...