Qatar University Institutional Repository: Recent submissions
Now showing items 381-400 of 30884
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A comparison study of trust in m-commerce between qatari and non-qatari customers
( Springer Science and Business Media Deutschland GmbH , 2020 , Conference)Over the past few years, mobile commerce (M-commerce), which is a new channel for conducting online businesses has revolutionized the global market. In Qatar, due to lack of trust, an only small percentage of Qatari ... -
A Review of Sustainable Consumption (2000 to 2020): What We Know and What We Need to Know
( Routledge , 2020 , Article)Owing to environmental pollution and care for natural resources, the notion of sustainable consumption has gained significant research attention. However, studies on sustainable consumption are still in their infancy and ... -
Age could be driving variable SARS-CoV-2 epidemic trajectories worldwide
( Public Library of Science , 2020 , Article)Current geographic spread of documented severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infections shows heterogeneity. This study explores the role of age in potentially driving differentials in infection ... -
A Novel Differential Evolution Algorithm with Q-Learning for Economical and Statistical Design of X-Bar Control Charts
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference)This paper presents a novel differential evolution algorithm with Q-Learning (DE_QL) for the economical and statistical design of X-Bar control charts, which has been commonly used in industry to control manufacturing ... -
A novel hybrid secure image encryption based on Julia set of fractals and 3D lorenz chaotic map
( MDPI , 2020 , Article)Chaos-based encryption schemes have attracted many researchers around the world in the digital image security domain. Digital images can be secured using existing chaotic maps, multiple chaotic maps, and several other ... -
A low-latency and energy-efficient neighbor discovery algorithm for wireless sensor networks
( MDPI , 2020 , Article)Wireless sensor networks have been widely adopted, and neighbor discovery is an essential step to construct the networks. Most existing studies on neighbor discovery are designed on the assumption that either all nodes are ... -
A novel video-vibration monitoring system for walking pattern identification on floors
( Elsevier , 2020 , Article)Walking-induced loads on office floors can generate unwanted vibrations. The current multi-person loading models are limited since they do not take into account nondeterministic factors such as pacing rates, walking paths, ... -
A Decision Support Tool for the Optimal Monitoring of the Microclimate Environments of Connected Smart Greenhouses
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)In this paper, a comprehensive decision support tool based advanced monitoring system is developed to support transition to smart greenhouses for sustainable and clean food production. The decision framework aims to optimally ... -
A comparative study of the incorporation effect of SWCNT-OH and DWCNT with varied microstructural defects on tensile and impact strengths of epoxy based nanocomposite
( Springer , 2020 , Article)This study presents an investigation of the influence of Single-Walled Carbon Nanotubes (SWCNTs) and Double-Walled Carbon Nanotubes (DWCNTs) on tensile and impact strengths of epoxy based nanocomposites. Two different CNTs ... -
A novel test method for tendon re-anchorage in bonded post tensioned concrete using ESPI full field measurement
( Springer , 2020 , Article)In this paper, a novel test method is proposed to measure the re-anchorage of a ruptured tendon in bonded post-tensioned concrete. Full-field measurements on post-tensioned concrete prisms (500 x 100 x 100 mm) allow a large ... -
A new megastable nonlinear oscillator with infinite attractors
( Elsevier , 2020 , Article)Dynamical systems with megastable properties are very rare in the literature. In this paper, we introduce a new two-dimensional megastable dynamical system with a line of equilibria, having an infinite number of stable ... -
A Bayesian Approach to Competing Risks Model with Masked Causes of Failure and Incomplete Failure Times
( Hindawi Limited , 2020 , Article)We present a Bayesian approach for analysis of competing risks survival data with masked causes of failure. This approach is often used to assess the impact of covariates on the hazard functions when the failure time is ... -
A new megastable chaotic oscillator with singularity
( Springer Science and Business Media Deutschland GmbH , 2020 , Article)While multistability is known as a hot topic in nonlinear dynamics, two exceptional cases of multistable systems have been investigated less: extreme multistable systems and megastable systems are two newer categories of ... -
A review on valorization of spent coffee grounds (SCG) towards biopolymers and biocatalysts production
( Elsevier , 2020 , Article Review)Spent coffee grounds (SCG) are an important waste product millions of tons generated from coffee consumption and could be effectively utilized for various applications due to their high organic content. SCG can be used as ... -
A linguistically-driven response categorisation protocol for Arabic nouns and verbs: clinical and research applications
( Taylor and Francis Ltd , 2020 , Article)Research into language breakdown in Arabic has been growing in the last two decades. The field, however, remains challenged by the lack of assessment materials, normative databases, and standards for categorising responses ... -
A novel three-step GeO2/GeO thermochemical water splitting cycle for solar hydrogen production
( Elsevier , 2020 , Article)This investigation reports the thermodynamic exploration of a novel three-step GeO2/GeO water splitting (WS) cycle. The thermodynamic computations were performed by using the data obtained from HSC Chemistry thermodynamic ... -
A Comb Shape Slot UWB Antenna with Controllable Triple Band Rejection Features for Wimax/Wlan/5G/Satellite Applications
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference)Advent of Ultra-wideband (UWB) technology has been flourished the uses of UWB spectrum (3.1-10.6) GHz accredited by the Federal Communication Commission (FCC) for the diversity of short-range applications. The vital challenge ... -
A comprehensive overview on intelligent mechanical systems and its applications
( Elsevier , 2020 , Conference)The serenity of the materials can be reflected from the load applied over them to extract its strength and scope. Perhaps the tender nature of the materials and its behavior such as ductility, hardness, impact resistance, ... -
A fractional-order model for the novel coronavirus (COVID-19) outbreak
( Springer , 2020 , Article)The outbreak of the novel coronavirus (COVID-19), which was firstly reported in China, has affected many countries worldwide. To understand and predict the transmission dynamics of this disease, mathematical models can be ... -
Ælfric, Boulogne-Sur-Mer 63, and the Institutio Canonicorum Aquisgranensis Get access Arrow
( Oxford University Press , 2020 , Article Review)The first part of Boulogne-sur-Mer, Biblothèque municipale, MS 63 (fols. 1–34), has long been associated with Ælfric of Eynsham. In Enid Raynes’s examination of the manuscript, she finds a ‘high proportion’ of the texts ...
