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السجلات المعروضة 3354 -- 3373 من 49134
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Asymptotic BER analysis of FSO with multiple receive apertures over M-distributed turbulence channels with pointing errors
( Optical Society of American (OSA) , 2014 , Article)In this paper, we consider a free-space optical (FSO) communication with multiple receive apertures over M-distributed turbulence channels with pointing errors. In particular, we consider two different combining schemes ... -
Asymptotic formulae for eigenvalues and eigenfunctions of q-Sturm-Liouville problems
( WILEY-VCH Verlag , 2011 , Article)We investigate the asymptotic behavior of the eigenvalues and the eigenfunctions of q-Sturm-Liouville eigenvalue problems. For this aim we study the asymptotic behavior of q-trigonometric functions as well as fundamental ... -
Asymptotic freedom, dimensional transmutation, and an infrared conformal fixed point for the ? -function potential in one-dimensional relativistic quantum mechanics
( American Physical Society , 2014 , Article)We consider the Schr?dinger equation for a relativistic point particle in an external one-dimensional ?-function potential. Using dimensional regularization, we investigate both bound and scattering states, and we obtain ... -
Asymptotic properties of the sample mean in adaptive stratified sequential sampling with multiple selection criteria
( Iranian Mathematical Society , 2013 , Article)We extend the method of adaptive two-stage sequen-tial sampling to include designs where there is more than one crite-ria used in deciding on the allocation of additional sampling effort. These criteria, or conditions, can ... -
Asymptotic stability of time-varying distributed parameter semi-linear systems
( IFAC , 2014 , Conference Paper)The asymptotic behaviour is studied for a class of non-linear distributed parameter time-varying dissipative systems. This is achieved by using time-varying infinite-dimensional Banach state space description. Stability ... -
Asynchronous Federated Learning-based ECG Analysis for Arrhythmia Detection
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Conference Paper)With the rapid elevation of technologies such as the Internet of Things (IoT) and Artificial Intelligence (AI), the traditional cloud analytics-based approach is not suitable for a long time and secure health monitoring ... -
Asynchronous flow scheduling for green ambient assisted living communications
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)AAL applications that support users (in particular, the elderly and patients) in staying at home are increasingly becoming popular in health care systems. Basically, these AAL applications provide personal information ... -
Asynchrony among local communities stabilises ecosystem function of metacommunities
( Blackwell Publishing Ltd , 2017 , Other)Temporal stability of ecosystem functioning increases the predictability and reliability of ecosystem services, and understanding the drivers of stability across spatial scales is important for land management and policy ... -
At least we'll die with harness on our back: Triumph of the will in Macbeth
( Qatar University , 1982 , Article) -
ATBHX Reinvented Cafe Arab Speaking network & IndIPEN 2021 Day1
( Qatar University , 2021 , Video) -
ATBHX Reinvented Cafe Arab Speaking network & IndIPEN 2021 Day2
( Qatar University , 2021 , Video) -
The athlete’s heart Part II Influencing factors on the athlete’s heart: Types of sports and age (Review)
( Akadémiai Kiadó , 2013 , Article)In our previous review characteristics of the athlete’s heart were divided into three groups: morphologic (left ventricular (LV) hypertrophy, improved coronary circulation), functional (better diastolic function) and ... -
Atmospheric Black Carbon over Qatar: Seasonal Variability and Source Apportionment
( Qatar University Press , 2021 , Poster)The earth’s atmosphere contains minute particles suspended within it. These atmospheric particles influence the earth's radiation budget through their ability to absorb and scatter radiation. Black carbon (BC) is a type ... -
Atmospheric Corrosion Behavior of Al 6xxx Alloys in Qatar State
( Hamad bin Khalifa University Press (HBKU Press) , 2016 , Conference Paper)Al 6000 series [Al-Mg-Si-Cu] are widely used in oil field for frames, tanks, pipelines and machinery applications. They showed a relatively high corrosion resistant, thermal and electrical conductivity and low cost. ... -
Atmospheric turbulence effect on hybrid FSO/RF systems
( IEEE Computer Society , 2017 , Conference Paper)This article is focused on the atmospheric turbulence attenuation and their effect on the hybrid free space optical and radio frequency (FSO/RF) under Qatar harsh and dry climate. Analysis has been done by calculating the ... -
Atomic-scale and optical investigation of nanostructured Er disilicates in silica
( Elsevier , 2022 , Article)The optical and structural properties of Er-doped Silicon oxide based thin films elaborated by RF magnetron sputtering were investigated as a function of annealing treatment. Atom Probe Tomography and Transmission electron ... -
Atrial fibrillation in Middle Eastern Arabs and South Asians: a scoping review
( IMR Press Limited , 2021 , Article)Most of the published literature on Atrial fibrillation (AF) originates from the northern hemisphere and mainly involves Caucasian patients, with limited studies in certain ethnicities and races. This scoping review was ...
