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Now showing items 6624-6643 of 25940
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Duration of COVID-19 mRNA Vaccine Effectiveness against Severe Disease
( MDPI , 2022 , Article)Waning immunity following administration of mRNA-based COVID-19 vaccines remains a concern for many health systems. We undertook a study to determine if recent reports of waning for severe disease could have been attributed ... -
Duration of immune protection of SARS-CoV-2 natural infection against reinfection.
( Oxford University Press , 2022 , Article)The future of the SARS-CoV-2 pandemic hinges on virus evolution and duration of immune protection of natural infection against reinfection. We investigated duration of protection afforded by natural infection, the effect ... -
Duration of mRNA vaccine protection against SARS-CoV-2 Omicron BA.1 and BA.2 subvariants in Qatar.
( Nature Research , 2022 , Article)SARS-CoV-2 Omicron BA.1 and BA.2 subvariants are genetically divergent. We conducted a matched, test-negative, case-control study to estimate duration of protection of the second and third/booster doses of mRNA COVID-19 ... -
Duration of symptoms is the only predictor of testicular salvage following testicular torsion in children: A case-control study
( Elsevier , 2020 , Article)ObjectiveTesticular torsion (TT) is an emergency requiring a prompt diagnosis and surgery to avoid irreversible changes and a complete loss of testis. The present study aimed to identify potential factors that may be predict ... -
Dust accumulation and aggregation on PV panels: An integrated survey on impacts, mathematical models, cleaning mechanisms, and possible sustainable solution
( Elsevier Ltd , 2023 , Article Review)Photovoltaic (PV) panels are one of the most emerging components of renewable energy integration. However, where the PV systems bring power conversion efficiency with its bulk installation setup and eco-friendly feasibility, ... -
DVF-fog: Distributed virtual firewall in fog computing based on risk analysis
( Inderscience Publishers , 2019 , Article)To eliminate network saturation during data exchanges, fog computing is deployed as the technology that benefits from both cloud computing and internet of things (IoT) paradigms. Therefore, we focus on network access control ... -
DwaRa: A Deep Learning-Based Dynamic Toll Pricing Scheme for Intelligent Transportation Systems
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)In Internet-of-Vehicles (IoV) ecosystems, intelligent toll gates (ITGs) connect nearby metropolitan cities through smart highways. At ITGs, existing solutions integrate blockchain (BC) and deep-learning schemes to leverage ... -
DyDroid: Measuring Dynamic Code Loading and Its Security Implications in Android Applications
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Android has provided dynamic code loading (DCL) since API level one. DCL allows an app developer to load additional code at runtime. DCL raises numerous challenges with regards to security and accountability analysis of ... -
Dynamic 3D imaging of gas hydrate kinetics using synchrotron computed tomography
( EDP Sciences , 2020 , Conference Paper)The availability of natural gas hydrates and the continuing increase in energy demand, motivated researchers to consider gas hydrates as a future source of energy. Fundamental understanding of hydrate dissociation kinetics ... -
Dynamic aggregated building electricity load modeling and simulation
( Elsevier B.V. , 2014 , Article)In order to support the growing interest in demand response modeling and analysis, there is a need for physical-based building load models. This work presents a new approach for simulating electrical power flow in buildings. ... -
Dynamic Analysis Of A Novel Manpowered Transportation Vehicle With High Mechanical Efficiency
( Qatar University , 2002 , Article)This paper evaluates the dynamics of a novel manpowered transportation vehicle. The vehicle has a novel mechanism that maximizes the mechanical input work and utilizes the weight of the rider for propulsion. The rider ... -
Dynamic analysis of application delivery network for leveraging software defined infrastructures
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Application Service Providers (ASPs) may obtain resources from a number of cloud service providers (CSPs) in an attempt to improve latency and minimize operational expenses (OpEx). The CSPs may use management and control ... -
Dynamic and multi-stage capacity expansion planning in microgrid integrated with electric vehicle charging station
( Elsevier , 2020 , Article)This paper investigates the long-term dynamic capacity expansion planning in the microgrids. The microgrid is supplied by various capacity resources including wind, solar, micro gas turbine, and energy storage system. The ... -
Dynamic balance ability in young elite soccer players:implication of isometric strength
( Edizioni Minerva Medica , 2018 , Article)BACKGROUND: Soccer requires maintaining unilateral balance when executing movement with the contralateral leg. Despite the fact that bal-ance requires standing with maintaining isometric posture with the support leg, ... -
Dynamic behavior modelling of a hybrid magnetorheological elastomer with encapsulated fluid for base vibration isolation
( Elsevier , 2023 , Article)Magnetorheological elastomers (MRE) based semi-active isolators utilize MREs whose mechanical properties, such as stiffness and damping, change in response to an external magnetic field. MREs implementation in semi-active ... -
Dynamic behavior of mixer-settlers
( Wiley Subscription Services, Inc., A Wiley Company , 1990 , Article)A mathematical model has been developed to simulate and predict the dynamic behavior of liquid extraction counter current operations in mixer-settler units. Murphree efficiency has been included in the model. The behavior ... -
Dynamic communications between GABA A switch, local connectivity, and synapses during cortical development: A computational study
( Frontiers Media S.A. , 2018 , Article)Several factors regulate cortical development, such as changes in local connectivity and the influences of dynamical synapses. In this study, we simulated various factors affecting the regulation of neural network activity ... -
Dynamic conceptual framework to investigate adoption of healthy diet through agent-based modelling
( Emerald Group Holdings Ltd. , 2021 , Article)Purpose: The purpose of this research is to develop a dynamic conceptual framework depicting factors related to the adoption of a healthy diet, which will underpin the development of an agent-based model (ABM) to uncover ... -
Dynamic Contract Design for Federated Learning in Smart Healthcare Applications
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Currently, the data collected by the Internet of Healthcare Things, i.e., healthcare oriented Internet of Things (IoT), still rely on cloud-based centralized data aggregation and processing. To reduce the need for transmission ... -
Dynamic Cross-Linking of Polymeric Binders Based on Host-Guest Interactions for Silicon Anodes in Lithium Ion Batteries
( American Chemical Society , 2015 , Article)We report supramolecular cross-linking of polymer binders via dynamic host–guest interactions between hyperbranched β-cyclodextrin polymer and a dendritic gallic acid cross-linker incorporating six adamantane units for ...