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Now showing items 22428-22447 of 26317
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Vibration of Periodic Drill-Strings with Local Sources of Resonance
( Multidisciplinary Digital Publishing Institute (MDPI) , 2021 , Article)A new class of drill-strings is proposed for attenuating undesirable vibrations to ensure effective operation. The drill-string is provided with passive periodic inserts, which are integrated with sources of local resonance ... -
Vibration of rotating functionally graded Timoshenko nano-beams with nonlinear thermal distribution
( Taylor and Francis Inc. , 2018 , Article)The vibration analysis of rotating, functionally graded Timoshenko nano-beams under an in-plane nonlinear thermal loading is studied for the first time. The formulation is based on Eringen's nonlocal elasticity theory. ... -
Vibration Prediction Model for Building Developments Adjacent to Railways
( Qatar Univesrity Press , 2020 , Conference Paper)This paper presents the experimental and computational evaluation of ground-borne noise and vibration impacts at sensitive receivers in the vicinity of existing track sections. Vibration problems occur as an effect of train ... -
Vibration sensing systems based on poly(Vinylidene fluoride) and microwave-assisted synthesized zno star-like particles with controllable structural and physical properties
( MDPI AG , 2020 , Article)This study deals with the effect of zinc oxide (ZnO) star-like filler addition to the poly(vinylidene fluoride) (PVDF) matrix, and its effect on the structural and physical properties and consequences to the vibration ... -
Vibration suppression in metastructures using zigzag inserts optimized by genetic algorithms
( Springer New York LLC , 2017 , Conference Paper)Metastructures are known to provide considerable vibration attenuation for mechanical systems. With the optimization of the internal geometry of metastructures, the suppression performance of the host structure increases. ... -
Vibration wave characteristics in Conventional and Periodic Drill string models
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Drill string models are of two major types- Conventional and Periodic. Conventional drill string models are widely used due to their simplicity in manufacturing and dynamics analysis. Drill strings are affected mainly by ... -
Vibrational Analysis Of TaBr5
( Qatar University , 1987 , Article)Vibrational analysis for TaBr5 is achieved on the basis of D3h symmetry and employing GF matrix method. Each vibration is quantitatively assigned according to the calculated values of the potential energy distributions. ... -
Vibrational Mechanics by Maple Practical Applications
( Qatar University Press (QU Press) , 2023 , Book)The book “Vibrational Mechanics by Maple Practical Applications” is designed to assist undergraduate and postgraduate students majoring in physics, mechanical engineering, electromechanical and aerospace engineering in ... -
Vibrations Serviceability of a Medical Facility Floor for Sensitive Equipment Replacement: Evaluation with Sparse in Situ Data
( American Society of Civil Engineers (ASCE) , 2019 , Article)Vibrations serviceability of building floors has been a growing concern over the years. For steel-framed systems, vibrations serviceability checks often govern the structural design. When the floor is carrying vibration-sensitive ... -
THE VICTIM OF TRAFFICKING IN PERSONS IN TUNISIAN LAW WITH AN OVERVIEW OF THE QATARI LAW
( Beirut Arab University Press , 2021 , Article)It seems that trafficking in persons is a universal phenomenon, which spare no State. Tunisia is affected by this degrading crime as a country of origin, destination and transit. It is doing significant efforts in order to ... -
Video acquisition between USB 2.0 CMOS camera and embedded FPGA system
( IEEE , 2011 , Conference Paper)In this paper, we introduce the hardware implementation of video acquisition in a sensor node of wireless sensor network with the help of USB 2.0 interface. The USB 2.0 video acquisition is based on the CY7C67300 controller ... -
Video Quality Assessment Dataset for Smart Public Security Systems
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)Security and monitoring systems are more and more demanding in terms of quality, reliability and flexibility especially those dedicated to video surveillance. The quality of the acquired video signal strongly affects the ... -
Video summarization based on motion detection for surveillance systems
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)In this paper a video summarization method based on motion detection has been proposed. Sensor noise (noise of acquisition and digitization) and the illumination changes in the scene are the most limitations of the background ... -
Video surveillance using deep transfer learning and deep domain adaptation: Towards better generalization
( Elsevier , 2023 , Other)Recently, developing automated video surveillance systems (VSSs) has become crucial to ensure the security and safety of the population, especially during events involving large crowds, such as sporting events. While ... -
Video transcoding at the edge: cost and feasibility perspective
( Springer Nature , 2023 , Article)The developments in smartphones, high data rates, and substantial video data traffic have increased the burden on cellular networks. Consequently, this burden significantly affects the Quality of Experience of the cellular ... -
ViDMASK dataset for face mask detection with social distance measurement
( Elsevier B.V. , 2022 , Article)The COVID-19 outbreak has extenuated the need for a monitoring system that can monitor face mask adherence and social distancing with the use of AI. With the existing video surveillance systems as base, a deep learning ... -
Views and experiences of community pharmacy team members on antimicrobial stewardship activities in Scotland: a qualitative study.
( Springer , 2020 , Article)Background It has been acknowledged and recognised internationally that the community pharmacy team has a major role to play in antimicrobial stewardship programmes, particularly regarding patient engagement. However, there ... -
Views and experiences of decision-makers on organisational safety culture and medication errors
( Wiley , 2020 , Article)In 2017, the World Health Organization published “Medication Without Harm, WHO Global Patient Safety Challenge,” to reduce patient harm caused by unsafe medication use practices. While the five objectives emphasise the ... -
Views of the Gulf Cooperation Council among Qatari and Other Gulf Nationals
( The Social and Economic Survey Research Institute, Qatar University , 2016 , Report)Here we examine the orientations of Qatari citizens toward the Gulf Cooperation Council (GCC) as revealed in a pan-GCC survey conducted in 2016. We assess general attitudes toward the Council as an institution, toward ... -
Vigorous Physical Activity Is Associated With Better Glycated Hemoglobin and Lower Fear of Hypoglycemia Scores in Youth With Type 1 Diabetes: A 2-Year Follow-Up Study
( Frontiers Media , 2020 , Article)To correlate glycated hemoglobin (HbA1c) and fear of hypoglycemia scores with physical activity (PA) levels in children and adolescents with type 1 diabetes (T1D) over a period of 2 years. Twenty-eight children and 33 ...
