تصفح Academic حسب العنوان
السجلات المعروضة 15413 -- 15432 من 26482
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Optical modulator based on silicon nanowires racetrack resonator
( SPIE , 2018 , Conference Paper)An optical modulator based on the racetrack resonator configuration is introduced.The structure of the resonator modulator is built from silicon nanowires on silica.The cladding and voids between the silicon nanowires are ... -
Optical Non-invasive Technique for Cholesterol Detection in Blood
( Qatar University Press , 2021 , Poster)The aim of this research is to design and develop a non-invasive cholesterol sensor based on the principle of light absorption. The current existing invasive methods can be replaced with non-invasive techniques. The ... -
Optical pavement treatments and their impact on speed and lateral position at transition zones: A driving simulator study
( Elsevier , 2021 , Article)Transition zones are a road section where posted speed drops from higher to lower limits. Due to the sudden changes in posted speed limits and road environment, drivers usually do not adapt to the posted speed limits and ... -
The Optical properties of Cadmium Stannate (Cd2SnO4) Thin Films Prepared by Chemical Spry Pyrolysis Technique
( Qatar University , 2004 , Article)Thin films of cadmium stannate were prepared using thermal chemical spray pyrols: Cadmium stannate' solution (0.2M) was prepared by dissolution of CdCl25H2O in C2H5OH tion of SnCl23H2O in CH3COOH at molar 2:1, respectively. ... -
Optical Properties Of Oxidated Blown Asphalt Films
( Qatar University , 1996 , Article)Films of purified blown asphalt of high grades of oil and the accompanied adulterated particles derived from its manufacturing process, that is, it was purified 98%. This study focused on optical properties in the wavelength ... -
Optical sensors based on the NiPc-CoPc composite films deposited by drop casting and under the action of centrifugal force
( Institute of Physics Publishing , 2017 , Article)In this study, solution processed composite films of nickel phthalocyanine (NiPc) and cobalt phthalocyanine (CoPc) are deposited by drop casting and under centrifugal force. The films are deposited on surface-type ... -
Optical solitons and qualitative analysis of nonlinear Schrodinger equation in the presence of self steepening and self frequency shift
( Elsevier , 2022 , Article)In this manuscript, the optical solitons of nonlinear Schrödinger equation (NLSE) with cubic–quintic law nonlinearity, in the presence of self-frequency shift and self-steepening, has been studied. The ultrahigh capacity ... -
Optimal adaptive control of drug dosing using integral reinforcement learning
( Elsevier Inc. , 2019 , Article)In this paper, a reinforcement learning (RL)-based optimal adaptive control approach is proposed for the continuous infusion of a sedative drug to maintain a required level of sedation. To illustrate the proposed method, ... -
Optimal Allocation of Multiple Distributed Generators and Shunt Capacitors in Distribution System Using Flower Pollination Algorithm
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Optimal siting and sizing of Distributed generators (DGs) and capacitors helps in enhancing the overall performance of distribution system. A proficient method to optimally allocate DGs and shunt capacitors in distribution ... -
Optimal allocation of power-to-hydrogen units in regional power grids for green hydrogen trading: Opportunities and barriers
( Elsevier , 2022 , Article)Due to the increasing hydrogen demands, a strong sense of commitment has recently been found to take advantage of the economic opportunities offered by power-to-hydrogen (P2H) units considering the high penetration of ... -
Optimal Boundary Control for Selective Catalytic Reduction Distributed Parameter Model
( Elsevier B.V. , 2018 , Article)This paper is devoted to design a model-based boundary optimal controller for selective catalytic reduction system. The mathematical model consists of coupled parabolic-hyperbolic PDEs with an ODE. The main objective is ... -
Optimal boundary control of coupled parabolic PDE-ODE systems using infinite-dimensional representation
( Elsevier , 2015 , Article)The optimal boundary control problem is studied for coupled parabolic PDE-ODE systems. The linear quadratic method is used and exploits an infinite-dimensional state-space representation of the coupled PDE-ODE system. ... -
Optimal collaborative energy harvesting spectrum sensing with limited time resource
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)We study a collaborative spectrum sensing (CSS) problem with limited time and energy resources in cognitive radio (CR) network. Time duration of sensing and data transmission, if the spectrum is identified as vacant, are ... -
Optimal conditions for olive mill wastewater treatment using ultrasound and advanced oxidation processes
( Elsevier , 2020 , Article)The treatment of olive mill wastewater (OMW) in Jordan was investigated in this work using ultrasound oxidation (sonolysis) combined with other advanced oxidation processes such as ultraviolet radiation, hydrogen peroxide ... -
Optimal Consensus Time Synchronizations for Wireless Sensor Networks
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)Wireless Sensor Networks (WSNs) have received an important consideration in recent years regarding its broad area of applications. Time synchronization is one of the most important challenges of WSNs. This paper proposes ... -
Optimal control and duality-based observer design for a hyperbolic PDEs system with application to fixed-bed reactor
( Taylor and Francis Ltd. , 2021 , Article)This paper is devoted to the design of an optimal infinite-dimensional Luenberger observer combined with a linear-quadratic state feedback controller for a system of hyperbolic PDEs. The design is based on the duality fact ... -
Optimal control of a non-isothermal catalytic packed-bed reactor model
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)This work deals with the linear-quadratic control problem for a non-isothermal packed-bed catalytic reactor, which is described by coupled hyperbolic and parabolic partial differential equations model. The classical Riccati ... -
Optimal control of a time-varying system of coupled parabolic-hyperbolic PDEs
( IEEE Computer Society , 2017 , Conference Paper)This paper is devoted to design an optimal linear quadratic controller for a time-varying system of coupled parabolic and hyperbolic partial differential equations (PDEs). Infinite-dimensional state space approach is adopted ... -
Optimal control of an advection-dominated catalytic fixed-bed reactor with catalyst deactivation
( Elsevier , 2013 , Article)The paper focuses on the linear-quadratic control problem for a time-varying partial differential equation model of a catalytic fixed-bed reactor. The classical Riccati equation approach, for time-varying infinite-dimensional ... -
Optimal control of coupled parabolic–hyperbolic non-autonomous PDEs: infinite-dimensional state-space approach
( Taylor and Francis Ltd. , 2018 , Article)This paper deals with the design of an optimal state-feedback linear-quadratic (LQ) controller for a system of coupled parabolic–hypebolic non-autonomous partial differential equations (PDEs). The infinite-dimensional state ...
