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In this paper a new electric power structure for solar powered unmanned aircraft system is proposed. The presented topology is a prospective improvement to both Solong and Zyphyr models. The proposed UAS model utilized Zyphry UAS by using ac bus-line instead of dc bus-line to supply the propellers. The system involves PV array, lithium sulfur based energy management system, dc bus-line, inverter,...
Millions of surveillance cameras operate at 24×7 generating huge amount of visual data for processing. However, retrieval of important activities from such a large data can be time consuming. Thus, researchers are working on finding solutions to present hours of visual data in a compressed, but meaningful way. Video synopsis is one of the ways to represent activities using relatively shorter duration...
This paper presents a novel method for fault classification based on Multiple Measurement Vector Compressive Sampling (MMV-CS), Fisher Score (FS), and Support Vector Machine (SVM). In this method, the original vibration signal passes through MMV-CS framework to obtain compressed samples that possess the quality of the original vibration signals. Afterwards FS algorithm is applied to select the most...
In this paper, we mainly focused on analyzing the thermoelectric property i.e. figure of merit of different nanostructured materials in room temperature (300–310 K). Here we studied the transition-metal dichalcogenides, particularly Molybdenum Disulfide (MoS2); Metal Oxides, specifically Zinc Oxide (ZnO); and conventional semiconductor materials, i.e. n-type and p-type Silicon (Si) and Silicon Germanium...
To enable simultaneous full-duplex radios, self-interference (SI) cancellation (SIC) circuits that attain large cancellation bandwidths (BWs) are needed to support modern standards such as Long-Term Evolution (LTE). For mobile applications, SIC should be linear, tunable, fully monolithic (compact form factor) and must be implemented at the radio-frequency (RF) front-end. Emulating the group delay...
In this paper, we propose three approaches for Arabic automatic speech recognition. For pronunciation modeling, we propose a pronunciation variant generation with decision tree. For acoustic modeling, we propose the Hybrid approach to adapt the native acoustic model using another native acoustic model. Regarding the language model, we improve the language model using processed text. The experimental...
This paper deals with introducing a new compound distribution, called Weibull — Poisson, with three parameters (λ, α, β), which have excellent modeling and applications for Bio-Informatics (in Computer Science). The probability compound model build according to the biological data, and then the parameters (λ, α, β) are estimated by different algorithms like maximum likelihood method, percentile method,...
This paper provides a stochastic optimization algorithm for the planning of distribution system (DS) feeders. The algorithm finds the optimal feeder routing considering the stochastic variations of load demands (e.g., electric vehicle charging stations) as well as renewable-based distributed generators (DGs) (e.g., photovoltaic and wind DGs). The stochastic variations are addressed using a Monte-Carlo...
Swirling flow in gas turbine combustors is a very common tradition in aerospace and/or industrial applications. This is because, swirl flows help to anchor flames, and cause better air-fuel mixing which enhance combustion efficiency and reduce harmful emissions. As a result, it is of a high interest to be able to predict the behavior of swirling turbulent flows in order to better design combustors...
The quasi Z-source power factor correction (QZS-PFC) in the range of 36–720W is analyzed for continuous conduction mode operation and compared with a classical flyback power factor correction (F-PFC) under the same operation conditions. A very precise closed loop duty ratio control was developed to optimize the performance of the QZS-PFC. The selected topology of QZS-PFC is compared with traditional...
Single electron circuits are proposed for use as a coherent signal source. This paper uses the Monte-Carlo method to investigate the degree of correlation between successive events in long arrays of tunnel junctions. Simulations use ensemble studies starting from a known condition used to compute the probability density functions for time between events. It is shown that longer arrays produce more...
This paper concerns with the design and implementation of a microcontroller based PID controller for the purpose of controlling PMDC motor speed. The design had been done using MATLAB and Simulink and the system then simulated using Proteus, in addition to a practical physical system. The controller was implemented on an Arduino Uno board to control the speed of the motor at a desired value with the...
The on-line walking speed control in human-powered exoskeleton systems is a big challenge, the real-time translations of human intention to increase or decrease walking speed in maneuverable coupled human exoskeleton systems is still complex field. An adaptive trajectory frequency control algorithm has been developed to guide the exoskeleton's joint in HUman-powered Augmentation Lower Exoskeleton...
A computer network that covers only a small area networks abbreviated Local Area Network LAN, is used in campus computer networks, buildings, offices, in homes, schools or smaller. Currently, most LANs based on the IEEE 802.3 Ethernet technology using devices such as hubs and switches, which have a data transfer speed of 10, 100, or 1000 Mega bit /s (Mbps). In this paper, we are investigating the...
In this paper, two schemes of a model predictive control (MPC), namely finite control set with modulation control (FCS-MPC) and dead-beat model predictive control (DB-MPC) as a continuous control set (CCS-MPC) are applied to permanent magnet synchronous motor (PMSM) for torque control. The FCS-MPC strategy chooses the optimal output voltage vector with its optimal modulation interval. In CCS-MPC strategy,...
This paper presents an experimental evaluation of performance of a complete electric vehicle (EV) system. Experimental implementation of powertrain is presented and then the performance of each plant is tested and assessed. This drivetrain includes two permanent magnet synchronous motors (PMSMs), two power converters with their gate drivers, the control board of TMS320F28335 DSP, and energy storage...
This paper studies position control of a linear induction motor drive using three cascaded sliding mode controllers. First, the indirect field oriented control of the LIMs is derived, and then cascaded sliding mode controllers design for indirect field oriented control is applied to compensate the uncertainties, which occur with conventional control techniques. The performance of the LIM drive is...
This paper is aimed at proposing an effective solution to enhance continuous power availability and to reduce the peak load demand in Kuwait electric grid system. The peak demand is made up from solar renewable energy sources. The potential of renewable energy as power generation sources in Kuwait has been studied and solar energy potential has been analyzed. In the pursuit of proposing a system based...
In this paper, assessing an analytical model of Kuwait city power consumption is focused. This includes data per person of energy demand, increasing trends over the years to investigate the rapidly increasing power demand due to the growing number of the population in Kuwait and due to modernization of lifestyle. Therefore, this paper focuses on the analytical model for Kuwait city power consumption...
Evidence for stem cells in the adult prostate comes from studies performed in rodents. Isaacs and Coffey [20] showed that castration in male rats resulted in the involution of prostate gland with persistence of the basal layer. On replacement of androgens, the prostate regained its original size [20]. It was concluded that a population of cells in the basal layer is capable of reconstituting the prostate...
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