Qatar University Institutional Repository: المرسلات الحديثة
السجلات المعروضة 221 -- 240 من 30715
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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 ... -
A Straightforward Optimization Approach for a Baseload Propane-Mixed Refrigerant Process
( Elsevier , 2020 , Book chapter)As the energy markets adjust to the increasing demand on liquefied natural gas (LNG) and growing global warming concerns, a compelling need arises to operate existing LNG plants as efficiently as possible. Cryogenic systems, ... -
A phase field approach for ductile fracture of short fibre reinforced composites
( Elsevier , 2020 , Article)Fracture events in short fibre reinforced polymer (SFRP) composites are one of the most limiting phenomena for their widespread use in many engineering applications, especially involving lightweight structures. In this ... -
Active learning engagement in teacher preparation programmes - A comparative study from Qatar, Lebanon and China
( Routledge , 2020 , Article)This study investigated student teachers' preferred active learning strategies, and those which they actually received during their teacher preparation programmes. An explanatory mixed methods research design was adopted, ... -
A novel secure occupancy monitoring scheme based on multi-chaos mapping
( MDPI , 2020 , Article)Smart building control, managing queues for instant points of service, security systems, and customer support can benefit from the number of occupants information known as occupancy. Due to interrupted real-time continuous ... -
A numerical and experimental investigation of a special type of floating-slab tracks
( Elsevier , 2020 , Article)Floating-Slab Tracks (FST) are predominantly used for mitigating railway-induced vibrations where the concrete slab is mounted on soft resilient bearings to provide vibration isolation. This paper presents a research study ... -
A novel vacuum wastewater treatment plant integrated with a solar absorption system
( John Wiley and Sons Ltd , 2020 , Article)In this investigation, a novel use of the solar absorption refrigeration systems was introduced by using it to enhance the operation of vacuum wastewater treatment plant. Wastewater treatment systems require a source of ... -
AI-based techniques on edge devices to optimize energy efficiency in m-Health applications
( Elsevier , 2020 , Book chapter)The fast increase in the number of patients who need continuous monitoring by caregivers and the inequality between the number of patients compared with the number of doctors cause a burden for both doctors and patients. ... -
A Power Associative Loop Structure for the Construction of Non-Linear Components of Block Cipher
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)In the symmetric key cryptography, the purpose of the substitution box is to generate confusion and hence improve the security of the whole cryptosystem. For this reason, many algebraic substitution boxes are constructed ... -
A new Tikhonov-TV regularization for optical flow computation
( SPIE , 2020 , Conference)Tikhonov regularization and total variation (TV) are two famous smoothing techniques used in variational image processing problems and in particular for optical flow computation. We consider a new method that combines these ...
