Browsing by Title
Now showing items 17965-17984 of 49774
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On the diet of the Pharaoh Eagle Owl, Bubo ascalaphus (Savigny, 1809), in Qatar, with an overview of its feeding habits
( Taylor and Francis Ltd. , 2014 , Article)The diet of Bubo ascalaphus in Qatar was assessed based on pellets collected from the first known nesting site of the species in the country. The pellets contained a total of 68 prey items, representing 9 different species: ... -
On the direct problem and scattering data for a singular system of differential Equations with discontinuous coefficients
( Qatar University , 1996 , Article)A system of Sturm-Liouiville differential equations of order n with a density matrix function is considered. The direct problem of the considered system is studied and hence the scattering data of the problem is obtained. -
On the distributed binary consensus algorithm in wireless sensor networks
( IEEE , 2013 , Conference Paper)We consider the binary consensus problem over the wireless sensor networks (WSN), where each node of the network initially observes one of two states and the aim of each node is to decide which one of the two states was ... -
On The Earthworm Fauna And Distribution In The State Of Qatar
( Qatar University , 1986 , Article)This paper is a preliminary account of the earthworms collected in February and March, 1986, from 10 localities in Qatar. Five species, Amynthas corticis (Family Megascolecidae), Dichogaster bolaui (Family Octochaetidae), ... -
On the effect of proportional fairness in energy transfer for wireless powered communication networks
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Wireless powered communication network (WPCN) is an emerging area of research where energy is transferred from the access point to the mobile terminals in the downlink and information is transferred in the uplink. In the ... -
On the effectiveness of emission penalties in decentralized supply chains
( Elsevier B.V. , 2019 , Article)In recent years, the emission of harmful pollutants, such as greenhouse gases, due to industrial activities have received considerable interest from both business and scientific communities. As a result, an increasing ... -
On the effectiveness of the vlf-em method For ground water prospecting in the Basement terrains, Sinai, Egypt
( Qatar University , 1997 , Article)The VLF-EM method is proved to be an effective, fast and inexpensive tool for ground water prospecting in the basement terrains of Southern Sinai. The resistive shallow alluvial deposits increase the penetration depth of ... -
On the effects of combined atmospheric fading and misalignment on the hybrid FSO/RF transmission
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Free-space optical (FSO) communication is known for its various impairments such as atmospheric turbulence and misalignment fading. In this paper, we study the performance of an FSO link operating under combined path loss ... -
On the Effects of Temperature on the Performances of FSO Transmission under Qatar's Climate
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Strong atmospheric turbulence can highly affect the free space optical (FSO) link. In fact, the strength of turbulence is depending on weather factors where the temperature is considered as the main parameter increasing ... -
On the encapsulation of Olsalazine by ?-cyclodextrin: A DFT-based computational and spectroscopic investigations
( Elsevier B.V. , 2019 , Article)In this work, the supramolecular host-guest interaction of the prodrug Olsalazine (OLZ) and β-Cyclodextrin (β-CD) was examined experimentally and computationally. Experimentally, employing the UV–Vis spectroscopic method ... -
On the Ergodic Secrecy Rate of Massive MIMO Transmission with Partial Legitimate User CSI
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)In this paper, we consider the downlink transmission over a single-cell massive multiple-input-multiple-output (MIMO) system in the presence of multiple single-antenna eavesdroppers (massive MIMOME). We concentrate on the ... -
On the Error Performance of Non-orthogonal Multiple Access Systems
( IEEE Computer Society , 2020 , Conference Paper)Unlike orthogonal multiple access schemes, non-orthogonal (NOMA) ones have arisen as an appealing solution to meet the requirements of the upcoming era of massive connectivity. In NOMA schemes, users are allowed to ... -
On the estimation of reliabilty function in a Weibull lifetime distribution
( Taylor & Francis , 2008 , Article)The estimation of the reliability function of the Weibull lifetime model is considered in the presence of uncertain prior information (not in the form of prior distribution) on the parameter of interest. This information ... -
On the evaluation of flue gases capturing capacity of porous organic materials
( Avestia Publishing , 2016 , Conference Paper)Integrated Gasification Combined Cycle (IGCC) has been emerged as an efficient alternative to post and oxy-combustion systems for power generation with controllable CO2 capture and separation. However, this system operates ... -
On the evaluation of tweet timeline generation task
( Springer Verlag , 2016 , Conference Paper)Tweet Timeline Generation (TTG) task aims to generate a timeline of relevant but novel tweets that summarizes the development of a given topic. A typical TTG system first retrieves tweets then detects novel tweets among ... -
On The Existence And Uniqueness Of Solutions Of A Functional Differential Equation
( Qatar University , 1983 , Article) -
On the existence of positive solutions for generalized fractional boundary value problems
( Springer , 2019 , Article)The existence of positive solutions is established for boundary value problems defined within generalized Riemann–Liouville and Caputo fractional operators. Our approach is based on utilizing the technique of fixed point ... -
On the fairness of frequency domain resource allocation in Wireless Mesh Networks A survey
( IEEE , 2011 , Conference Paper)This article presents a concise survey of fairness-aware frequency domain resource allocation techniques in Wireless Mesh Networks (WMNs). Wireless mesh networks have emerged as a key technology for next generation application ... -
On the fairness of resource allocation in wireless mesh networks: A survey
( Kluwer Academic Publishers , 2013 , Article Review)This article presents a comprehensive survey of resource allocation techniques in Wireless Mesh Networks (WMNs). Wireless mesh networks have emerged as a key technology for next generation application specific multi-hop ... -
On The Formation of Intermediate & Deep Water Masses in The Eastern Mediterranean
( Qatar University , 2000 , Article)In the eastern Mediterranean, three main water masses are classified: Modified Atlantic Water of Atlantic origin, Levantine Intermediate Water (LIW), formed in winter during storm events and Eastern Mediterranean Deep Water ...