In this paper, we solve the problem of excitation of plasma oscillations in 2D electron layer selfconsistently using the full system of the Maxwell equations. We formulate this problem as the problem of diffraction of...
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In this paper, we solve the problem of excitation of plasma oscillations in 2D electron layer selfconsistently using the full system of the Maxwell equations. We formulate this problem as the problem of diffraction of the incoming plane electromagnetic wave on a gate electrode.
We analyze two software rejuvenation policies of cluster server systems under varying workload, called fixed rejuvenation and delayed rejuvenation. In order to achieve a higher average throughput, we propose the delay...
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We analyze two software rejuvenation policies of cluster server systems under varying workload, called fixed rejuvenation and delayed rejuvenation. In order to achieve a higher average throughput, we propose the delayed rejuvenation policy, which postpones the rejuvenation of individual nodes until off-peak hours. Analytic models using the well known paradigm of Markov chains are used. Since the size of the Markov model is nontrivial, automated specification generation, and the solution via stochastic Petri nets is utilized. Deterministic time to trigger rejuvenation is approximated by a 20-stage Erlangian distribution. Based on the numerical solutions of the models, we find that under the given context, although the fixed rejuvenation occasionally yields a higher throughput, the delayed rejuvenation policy seems to outperform fixed rejuvenation policy by up to 11%. We also compare the steady-state system availabilities of these two rejuvenation policies.
Low frequency fluctuations in light intensity of 340 nm and 280 nm GaN-based light emitting diodes (LEDs) are compared with noise properties of other commercially available UV and visible wavelength LEDs and halogen l...
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The Fast Multipole Method(FMM) and Multilevel Fast Multipole Algorithm(MLFMA) are successfully developed to solve electrically very large size of perfectly electric conducting objects(PEC).Using the impedance boundary...
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The Fast Multipole Method(FMM) and Multilevel Fast Multipole Algorithm(MLFMA) are successfully developed to solve electrically very large size of perfectly electric conducting objects(PEC).Using the impedance boundary conditions(IBC), the integral equations(IEs) can be simplified and solved for wave problems involving imperfectly conducting ***,the algorithm is firstly implemented and verified by comparing with the exact analytical solution for a PEC sphere,and then extended for imperfectly conducting(thin material coating) objects and verified with the analytical ***,it has been applied to an aircraft model with the PEC and material coating surface and compared the results.
This paper presents a novel personal authentication system using palmprints. The technology uses the unique information extracted from palmprints (such as principal lines, wrinkles, and textures) during the authentica...
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Electromagnetic theory of plasma oscillations in field-effect transistor with two-dimensional electron channel is presented. Two different key electromagnetic problems are considered. They are the problems of diffract...
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Electromagnetic theory of plasma oscillations in field-effect transistor with two-dimensional electron channel is presented. Two different key electromagnetic problems are considered. They are the problems of diffraction of the plane electromagnetic wave (i) on the slot in infinite perfectly conductive plane, which is bridged by 2D electron channel and (ii) on the perfectly conductive strip, which screens partially an infinite 2D electron sheet located at a given distance from the strip. New physics inherent in these problems is revealed.
High-frequency response of field-effect transistors and diodes with two-dimensional electron channels is strongly affected by plasma oscillations in the channel. This phenomenon in its various manifestations can be us...
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High-frequency response of field-effect transistors and diodes with two-dimensional electron channels is strongly affected by plasma oscillations in the channel. This phenomenon in its various manifestations can be used for the detection, frequency multiplication and generation of terahertz radiation. One of the main parameters of a device, which determines its high-frequency properties, is the device impedance. We calculate here the impedance of a slot diode with conductively contacted two-dimensional electron channel using the full system of the Maxwell equations. In this way, we account for the radiation resistance and inter-contact capacitance from first principles.
Low frequency fluctuations in light intensity of 340 nm and 280 nm GaN -based light emitting diodes (LEDs) are compared with noise properties of other commercially available UV and visible wavelength LEDs and halogen ...
Low frequency fluctuations in light intensity of 340 nm and 280 nm GaN -based light emitting diodes (LEDs) are compared with noise properties of other commercially available UV and visible wavelength LEDs and halogen lamps. At low frequencies, LEDs can exhibit lower levels of noise than halogen lamps. An LED noise quality factor β is estimated for the UV LEDs.
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