Browsing by Title
Now showing items 7984-8003 of 50233
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Drill string nonlinear vibrations: Experimental studies and finite-element analysis
( Institute of Physics Publishing , 2018 , Conference Paper)In the present work, nonlinear vibrations of drill strings are studied. A laboratory scale arrangement consisting of a flexible rod with rotor-stator system is used to study the system dynamics. A finite-element model has ... -
Drillstring Failure - Identification, Modeling, and Experimental Characterization
( American Society of Mechanical Engineers (ASME) , 2019 , Article)Drilling is one of the costliest and risky activities in oil and gas industry due to complexity of interactions with downhole formation. Under such conditions, the uncertainty of drillstring behavior increases, and hence, ... -
Drive-up INR testing and phone-based consultations service during COVID-19 pandemic in a pharmacist-lead anticoagulation clinic in Qatar: Monitoring, clinical, resource utilization, and patient- oriented outcomes
( Wiley , 2021 , Article)Background: Coronavirus disease 2019 (COVID-19) pandemic has resulted in unprecedented pressure on healthcare systems and led to widespread utilization of telemedicine or telehealth services. Combined with teleclinics, ... -
Driver activity recognition in virtual reality driving simulation
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)In this research, we present the design of a driving seat with driver activities recognition based on a passive method for measuring body-postures by using two force sensor arrays to inspect the pressure patterns exhibited ... -
Driver Drowsiness Detection Model Using Convolutional Neural Networks Techniques for Android Application
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)A sleepy driver is arguably much more dangerous on the road than the one who is speeding as he is a victim of microsleeps. Automotive researchers and manufacturers are trying to curb this problem with several technological ... -
Driver Drowsiness Detection Study using Heart Rate Variability analysis in Virtual Reality Environment
( Hamad bin Khalifa University Press (HBKU Press) , 2018 , Conference Paper)Introduction Mobility and road safety is one of the grand challenges that Qatar is facing during the last decade. There are many ways to enhance the road safety. One way is to characterize the factors contributing to the ... -
DRIVERS AFFECTING THE SUCCESSFUL IMPLEMENTATION OF ORGANIZATIONAL STRATEGIES: THE CASE OF THE OIL & GAS INDUSTRY IN QATAR
(2024 , Professional Masters Project)The oil and gas industry in Qatar stands out as one of the world's most prosperous sectors. This success comes from the excellent decision-making and practical implementations accumulated over the years. A literature review ... -
Drivers and outcomes of corporate sustainability in the Indian hospitality industry
( Emerald Publishing Limited , 2023 , Article)Purpose: This study aims to examine corporate sustainability in the hospitality industry as it caters to multiple stakeholders such as society and environment. Further, the researchers have attempted to portray a comprehensive ... -
Drivers for energy analysis towards a BIM-enabled information flow
( Emerald Publishing , 2023 , Article)Purpose: Energy analysis (EA) within a building information modelling (BIM) enables consistent data integration in central repositories and eases information exchange, reducing rework. However, data loss during information ... -
Drivers of circular economy for small and medium enterprises: Case study on the Indian state of Tamil Nadu
( Elsevier , 2022 , Article)The present paper highlights the growing relevance of the Circular Economy (CE), its adoption by Small- and Medium-sized Enterprises (SMEs), and the relationship between the drivers of CE. Using a case study of CE adoption ... -
Drivers of employee entrepreneurial intention: a study of the oil and gas sector in Qatar
( Inderscience Publishers , 2023 , Article)Many employees are opting to start new businesses while working full-time for established firms. Although employee entrepreneurship has attracted much attention recently, very little is known on what motivates employees ... -
DRIVERS OF MOBILE CREDIT CARD ACCEPTANCE IN QATAR
(2018 , Professional Masters Project)The main purpose of this study is to investigate the factors that influence consumers' intention to use near field communication (NFC) technology based smart credit card (SCC) payment in the Qatari context. The study ... -
Drivers of snow leopard poaching and trade in Pakistan and implications for management
( Pensoft Publishers , 2022 , Article)The snow leopard is one of the highly valued species from high-altitude mountain ecosystems of Central and Southeast Asia, including Pakistan. This keystone species is facing a myriad of conventional and emerging threats, ... -
Drivers of Social Media Networking Site Continuance Intention in Jordan and South Africa: Do National Cultural Differences Matter?
( IGI Global , 2022 , Article)The present study integrates perceived service quality and national cultural dimensions into the expectation-confirmation model (ECM) to ascertain the antecedents of user satisfaction and continuance use of SNSs and tested ... -
Drivers' perceptions of smartphone applications for real-time route planning and distracted driving prevention
( Hindawi Limited , 2019 , Article)Given the increasing importance and availability of traffic-related smartphone applications, understanding their potential use is vital, especially in developing countries. This research explores motorist perceptions of ... -
Drivers’ estimation of their travelling speed: a study on an expressway and a local road
( Taylor and Francis Ltd. , 2019 , Article)Correctly estimating the travelling speed is essential for safety on the roads to ensure safer interactions with other drivers and to avoid violations of traffic regulations. Therefore, it is important to create understanding ... -
Drivers’ perceptions of the sharing economy for transport services
( Elsevier Inc. , 2022 , Article)The sharing economy (SE) has been studied from various perspectives, but ridesharing is a particularly popular type of SE that has manifested around the world. Prior studies of the SE have largely explored customers’ ... -
Drivers� crossing behaviour between express and local lanes with soft separation: A driving simulator study
( Gioacchino Onorati Editore , 2018 , Article)In different countries, hard separation is adopted as a technique to separate express and local lanes. However, in case of an incident, especially on the express lane, traffic jams can occur as there is no escape route. ... -
Driving behavior classification at signalized intersections using vehicle kinematics: Application of unsupervised machine learning
( Taylor & Francis , 2022 , Article)Driving behavior is considered as a unique driving habit of each driver and has a significant impact on road safety. This study proposed a novel data-driven Machine Learning framework that can classify driving behavior at ...
