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Now showing items 721-730 of 856
Design and Implementation of a Reconfigurable Wideband Radio Frequency Spectrum Analyzer with Image Rejection in the Digital Domain
(2021-02-19)
Most existing radio frequency (RF) spectrum analyzers use conventional superheterodyne architecture to remove images associated with the down conversion of RF input frequency to some intermediate frequency (IF) for further ...
Analytical Modelling of Electromagnetic Bulging of Thin Metallic Tubes
(Springer Nature, 2021-02-19)
The main objective of this paper is to develop an analytical method based on the energy balance equation to model the plastic deformation of thin metallic tubes in a high velocity forming process under axisymmetric conditions. ...
Influence of Drill Geometry Design on Drilling-Induced Damage Reduction in Fibre-Reinforced Polymeric Composites
(Springer Nature, 2021-02-18)
Drilling is an extensively used manufacturing process for boring different and widely used fibre-reinforced polymeric (FRP) composite materials, among various machining operations. This process is inevitable for ...
Comprehensive Study on Tool Wear During Machining of Fibre-Reinforced Polymeric Composites
(Springer Nature, 2021-02-18)
The use of fibre reinforced polymeric (FRP) composites has increased rapidly, especially in many manufacturing (aerospace, automobile and construction) industries. The machining of composite materials is an important ...
Antimicrobial Stewardship Programmes in Saudi Hospitals: Evidence from a National Survey
(2021-02-17)
Saudi hospitals and healthcare facilities are facing increasing rates of antimicrobial resistance and the emergence of new multi-drug resistant strains. This is placing an unprecedented threat to successful treatments and ...
Wittgenstein's Images in Focus
(2021-02-17)
Mobile phone applications use while driving in Ukraine: Self-reported frequencies and psychosocial factors underpinning this risky behaviour
(2021-02-17)
Despite the fact that mobile phones have been transformed over the last decade into information and communication hubs that are fundamental to modern life, there is little information on how this has impacted on mobile ...
The LOFAR LBA Sky Survey I. survey description and preliminary data release
(2021-02-17)
Context. The LOw Frequency ARray (LOFAR)istheonlyradiotelescopethatispresentlycapableofhigh-sensitivity,high-resolution (i.e. < 1mJybeam−1 and < 1500) observations at ultra-low frequencies(< 100MHz). To utilise these ...
How Quality Improvement Collaboratives Work to Improve Healthcare in Care Homes: A Realist Evaluation
(2021-02-16)
Background Quality Improvement Collaboratives (QICs) bring together multidisciplinary teams in a structured process to improve care quality. How QICs can be used to support healthcare improvement in care homes is not fully ...
Opioid painkillers' dependence in a sample of elderly medical inpatients
(2021-02-16)
BACKGROUND: Over the past few years there has been a growing concern towards prescription opioid misuse/dependence in the elderly. Thus, our study aimed at investigating the prevalence of previous and current prescribing ...