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السجلات المعروضة 1153 -- 1172 من 48376
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A precious-metal-free Fe-intercalated carbon nitride porous-network with enhanced activity for the oxygen reduction reaction and methanol-tolerant oxygen reduction reaction
( Royal Society of Chemistry , 2020 , Article)The economical cost of the catalyst material has remained a challenging task in traditional fuel cells (FCs) and in direct methanol fuel cells (DMFCs). However, replacement of noble metals with precious metal-free materials ... -
A precise converter for resolvers and sinusoidal encoders based on a novel ratiometric technique
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Resolvers and other sinusoidal encoders provide electrical signals related to the sine and cosine of the unknown angular position of their rotor shafts. Conventional tangent/cotangent converter used with these transducers ... -
A predictive control approach for fault management of computing systems
( Association for Computing Machinery , 2015 , Conference Paper)In this paper, a model-based predictive control approach for fault management in computing systems is presented. The proposed approach can incorporate existing fault diagnosis methods and fault recovery actions to facilitate ... -
A predictive model for the assessment of the temperature polarization effect in direct contact membrane distillation desalination of high salinity feed
( Elsevier B.V. , 2014 , Article)Temperature polarization is one of the major sources responsible for flux drop in membrane distillation systems due to the reduction in the driving force across the membrane. The present study offers a predictive model ... -
A preemptive bound for the Resource Constrained Project Scheduling Problem
( Springer US , 2014 , Article)The Resource Constrained Project Scheduling Problem is one of the most intensively investigated scheduling problems. It requires scheduling a set of interrelated activities, while considering precedence relationships, and ... -
A preliminary checklist of the ants (Hymenoptera: Formicidae) of Qatar
( Qatar University Press , 2020 , Poster)The State of Qatar is a small peninsula located in the northeastern part of the Arabian Peninsula. It is classified as a subtropical desert with a very extreme harsh climatic conditions in summer and mild winter. Information ... -
A Privacy Scheme for Digital Images Based on Quantum Particles
( Springer , 2019 , Article)Quantum processing inspired every field of science and technology. Quantum digital content privacy schemes usually employs photons to communicate a key. In this article, we are utilizing different states which correspond ... -
A privacy-preserving traffic monitoring scheme via vehicular crowdsourcing
( MDPI AG , 2019 , Article)The explosive number of vehicles has given rise to a series of traffic problems, such as traffic congestion, road safety, and fuel waste. Collecting vehicles’ speed information is an effective way to monitor the traffic ... -
A Probabilistic Approach for Maximizing Travel Journey WiFi Coverage Using Mobile Crowdsourced Services
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)A public transport journey planning service often yields multiple alternative journeys plans to get from a source to a destination. In addition to journey preferences, such as connecting time and walking distance, passengers ... -
A probabilistic multi-tenant model for virtual machine mapping in cloud systems
( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)A novel probabilistic multi-tenant model is developed to characterize the service performance of cloud systems. The model considers essential cloud-system characteristics including virtualization, multi-tenancy and ... -
A Probabilistic Source Location Privacy Protection Scheme in Wireless Sensor Networks
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)With the recent developments of wireless sensor networks (WSNs), computing and communication have experienced huge advancement. Meanwhile, security has not received the same attention to go along with such developments. ... -
A problem-oriented approach to represent and manage knowledge in PBL
( Asia-Pacific Society for Computers in Education , 2015 , Conference Paper)In traditional subject-based learning knowledge is well-structured and prepared in advance by the teachers before transferring in the form of a lecture presentation. However, the knowledge learned in problem-based learning ... -
A process design approach to manage the uncertainty of industrial flaring during abnormal operations
( Elsevier Ltd , 2018 , Article)Flare management challenges are related to the flaring uncertainty during abnormal situations. In this work, a multi-objective optimization framework is upgraded with multi-period optimization and Monte Carlo simulation ... -
A process for CO2 capture and brine salinity reduction through reaction with potassium hydroxide: A multi-stage evaluation
( Elsevier B.V. , 2022 , Article)Solvay and modified Solvay processes are facing a major challenge in reducing brine salinity to a level suitable for agriculture and industry. This challenge arises as a result of competing reactions and mixing limits ... -
A Process Model for Customisation of Software in Multi-tenant SaaS Model
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)This paper outlines a generic process framework for customisation of software in cloud computing. The flexibility for client-specific customisation of the software offered by software-as-a-service (SaaS) is limited. The ... -
A profile of journalists in Qatar: traits, attitudes and values
( Taylor and Francis , 2016 , Article)This study draws a portrait of media practitioners in Qatar in terms of educational background, working conditions, and professional orientations. The main research tool of this study is the survey method. An 88-item ... -
A Profile of Journalists in Qatar: Traits, Attitudes and Values
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)The Qatari media system is emerging rapidly to cater for the rapid socio-economic change and sustainable development the country is witnessing since its independence in December 18th, 1997. Since the accession of H.H Sheikh ... -
A program evaluation reporting student perceptions of early clinical exposure to primary care at a new medical college in Qatar
( BioMed Central Ltd , 2021 , Article)Background: Though common practice in Europe, few studies have described the efficacy of early clinical exposure (ECE) in the Middle East. The barriers to clinical learning experienced by these novice medical students have ... -
A program for obese youth at-risk for diabetes in Qatar
( Hamad bin Khalifa University Press (HBKU Press) , 2015 , Article)Background: Obesity is an international public health problem well documented in Qatar among children and adolescents and contributes to diabetes, a disease already highly prevalent in the country. We describe an intervention ... -
A promising non-orthogonal multiple access based networking architecture: Motivation, conception, and evolution
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)Since it can offer higher spectral efficiency by granting the served data to share the same spectrum resource synchronously, NOMA is considered as a bright multiple access technique for future wireless networks. Accommodating ...
