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Now showing items 20265-20284 of 53345
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Physical Layer Secuirty Techniques for RFID Systems
(2020 , Master Thesis)The deployment of RFID technology in various applications is delayed due to the increased concerns over possible security breaches, especially in healthcare applications. For medical devices and applications, RFID and ... -
Physical Layer Security Analysis of UAV Based Communication Networks
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)In this paper, we investigate the communication security in aerial wiretap channels, where a network flying platform (NFP) wishes to send information to a legitimate destination, in the presence of multiple eavesdroppers. ... -
Physical Layer Security for TAS/MRC Systems With and Without Co-Channel Interference Over Fading Channels
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)In this paper, the secrecy performance of transmit antenna selection/maximal ratio combining systems in the absence and presence of co-channel interference (CCI) over ?-? fading channels is considered. In particular, ... -
A Physical Layer Security Scheme with Compressed Sensing in OFDM-based IoT Systems
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)The Internet of Things (IoT) features pervasive sensing and control capabilities by deploying a massive machinetype communication (MTC) devices. However, low hardware complexity, low processing capacity and constrained ... -
Physical, microstructural and mechanical study of isochronal annealing of deformed commercial iron
( Elsevier Ltd , 2016 , Article)Isochronal annealing of deformed commercial iron samples (99.88 m.-% Fe) after cold deformation is studied by means of Vickers microhardness and physical techniques based on positron annihilation (positron annihilation ... -
PHYSICIAN SCHEDULING IN WOMEN'S HOSPITAL
(2018 , Professional Masters Project)In this project, a physician scheduling problem arising from the operations of the Obstetrics and Gynecology Department at Hamad Women's Hospital in Qatar has been studied. The essence of the physician scheduling problem ... -
Physicians should build their own machine-learning models
( Elsevier , 2024 , Other)Yosra Mekki suggests that doctors should have the ability to develop their own machine-learning models. She proposes an approach with the "spotlight" on physicians, to create user-friendly frameworks that allow doctors to ... -
Physicians' perceptions of medical representative visits in Yemen: A qualitative study
(2013 , Article)Background: The pharmaceutical industry invests heavily in promotion, and it uses a variety of promotional strategies to influence physicians' prescribing decisions. Within this context, medical representatives (MRs) are ... -
Physico-chemical characteristics of oil produced from seeds of some date palm cultivars (Phoenix dactylifera L.) .
(2015 , Article)The oil content of saturated and unsaturated fatty acids with some physico-chemical properties and nutrients were investigated in oil produced from seeds of six important date palm cultivars and one seed strain present in ... -
Physico-chemical characterization of biochars from solid municipal waste for use in soil amendment
( Elsevier B.V. , 2016 , Article)The fast economic and demographic growth lead to generation of large amounts of solid wastes placing Qatar on top of most nations with a per capita solid waste generation of nearly 2.5 milliontons/year of which 60% is ... -
Physico-Mechanical Properties of New Electrospun Polyvinylidene Fluoride Nanocomposites
(2015 , Master Thesis)This study aimed to prepare and characterize poly(vinylidene fluoride) (PVDF) nanofibres with the following additives: graphene oxide (GO), cellulose, and silver nanoparticles (Ag-NPs). Two types of solvents were used to ... -
Physico-mechanical Properties of Sustainable Building Material Based Gypsum and Recycled Polyethylene Waste
( Qatar University Press , 2023 , Conference Paper)The economic focus in the building sector is on lightweight materials. Recycled polyethylene particles coming from plastic botteles waste can ensure this lightness and can solve not only technical problems, but also produce ... -
Physico-mechanical, dielectric, and piezoelectric properties of PVDF electrospun mats containing silver nanoparticles.
( C , 2017 , Article)Poly(vinylidene fluoride) (PVDF) is a piezoelectric material with outstanding physical and mechanical properties. The piezoelectric properties depend on the β-phase content of this polymer, while the physical and mechanical ... -
Physicochemical characterization and cancer cell antiproliferative effect of silver-doped magnesia nanoparticles
( Elsevier , 2023 , Article)Silver-doped magnesia nanoparticles (Ag/MgO) were synthesized using the precipitation method and characterized by various techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermal ... -
Physicochemical characterization and cancer cell antiproliferative effect of silver-doped magnesia nanoparticles
( Elsevier , 2023 , Article)Silver-doped magnesia nanoparticles (Ag/MgO) were synthesized using the precipitation method and characterized by various techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), thermal ... -
Physicochemical Insights on Alkylcarbonate-Alkanol Solutions
( American Chemical Society , 2016 , Article)Macroscopic properties and structuring at the molecular level of dialkylcarbonate + 1-alkanol mixed fluids have been studied as a function of alkyl chain lengths in 1-alkanol and dialkylcarbonate, mixture composition, and ... -
Physicochemical modifications in microwave-irradiated chitosan: biopharmaceutical and medical applications
( Taylor & Francis , 2024 , Article)Biopharmaceutical and biomedical applications of chitosan has evolved exponentially in the past decade, owing to its unique physicochemical properties. However, further applications can be garnered from modified chitosan, ... -
Physicochemical properties and combustion kinetics of food waste derived hydrochars
( Elsevier , 2022 , Article)In this work, simulated food waste (15% white bread, 15% palm dates (without seeds), 5% boiled egg (without shells), 20% spent tea leaves, 20% spent coffee ground, and 25% banana peel in parts weight) was subjected to ... -
Physicochemical Properties of Derivatives of N,N-Dimethylamino–cyclic–chalcones: Experimental and Theoretical Study
( Wiley-Blackwell , 2016 , Article)A series of three N,N-dimethyl-amino-cyclic-chalcones chromophores of the D-π-A type (1-3) where, (Donor= N,N-dimethyl-aniline) and Acceptor= indan-1-one (1), 3,4-dihydro-2H-naphthalen-1-one (2) and 3,4,5-tetrahydro-benz ... -
Physicochemical Stability Enhancement of ?-carotene-rich O/W Nanoemulsions using a New Natural Emulsifier Developed from Pistacia lentiscus Fruit Residue
( Springer , 2023 , Article)A natural antioxidant-emulsifier was developed from oil pressed Pistacia lentiscus fruit and tested for oil-in-water nanoemulsions ?-carotene encapsulation. Five extracts were prepared, characterized and screened for their ...