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السجلات المعروضة 721 -- 730 من 774
Secondary users selection and sparse narrow-band interference mitigation in cognitive radio networks
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Elsevier B.V.
, 2018 , Article)
Spectrum scarcity is a critical problem that may reduce the effectiveness of wireless technologies and services. To address this problem, different spectrum management techniques have been proposed in the literature such ...
Nanoflower-like Yttrium-doped ZnO Photocatalyst for the Degradation of Methylene Blue Dye
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Blackwell Publishing Inc.
, 2018 , Article)
Pure ZnO and Yttrium-doped (Y-doped) ZnO at various mol% with flower-like nanostructures are synthesized by a microwave-assisted sol�gel method, followed by investigating the morphologies, crystal structures, optical ...
Ordered porous metal oxide semiconductors for gas sensing
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Elsevier B.V.
, 2018 , Article)
Among various gas sensing materials, metal oxide semiconductors have shown great potential as resistive type sensors. The ordered porous structural metal oxide semiconductors with well-defined meso- or macro-pores chemically ...
Flexural behavior of basalt fiber reinforced concrete beams with recycled concrete coarse aggregates
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Elsevier Ltd
, 2018 , Article)
This study investigates the effect of using recycled concrete aggregates (RCA) from construction and demolition (C&D) waste combined with basalt macro-fibers (BMF) on the flexural behavior and ultimate capacity of reinforced ...
الموقف البريطاني من الخلافات وحالات الغزو عبر الحدود الأردنية - السعودية 1920-1933م.
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جامعة آل البيت
, 2018 , Article)
يهدف هذا البحثُ إلى تتبٍّع الموقف البريطاني تجاه الغاراتِ المتبادلة بين القبائل على الحدود الأردنية السعودية خلال الفترة 1920-1933م، وذلك من خلال تقييم الإجراءات والجهود التي اضطلعت بها بريطانيا بهدف وقف تلك الغارات،بصفتها ...
Rheological and controlled release properties of hydrogels based on mushroom hyperbranched polysaccharide and xanthan gum
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Elsevier B.V.
, 2018 , Article)
A hyperbranched polysaccharide, coded as TM3a, was extracted from the Pleurotus tuber-regium sclerotia. TM3a was hybridized with xanthan gum (XG) by chemical crosslinking using sodium trimetaphosphate (STMP) to obtain new ...
Passive inference of attacks on CPS communication protocols
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Elsevier Ltd
, 2018 , Article)
The security of Cyber-Physical Systems (CPS) has been recently receiving significant attention from the research community. While the majority of such attention originates from the control theory domain, few approaches ...
Reduced-complexity sparsity-aware joint phase noise mitigation and channel equalization in OFDM receivers
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Elsevier B.V.
, 2018 , Article)
A major performance and complexity limitation in direct-conversion broadband wireless transceivers is the phase noise (PN) resulting from the inevitable imperfections in the fabrication process of the crystal oscillator. ...
Scale heterogeneity in discrete choice experiment: An application of generalized mixed logit model in air travel choice
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Elsevier B.V.
, 2018 , Article)
This study explores to what extent scale heterogeneity (i.e., varying standard deviation of the errors across consumers) is important in air travel choice using data from a stated preference discrete choice experiment. We ...
نحو مجتمع للمصطلحات(بين رهانات العلم وارتهانات الفهم)
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مخبر النقد و مصطلحاته - كلية الآداب و اللغات - جامعة ورقلة
, 2018 , Article)
إن مفاتيح العلوم مصطلحاتها، وانطلاقا من هذه المقولة أردنا أن نصل للقول إن مفاتيح خروجنا من معرفة المجتمع إلى مجتمع المعرفة هو تبني فكرة بناء مجتمع للمصطلحات، ذلك المجتمع المستقبلي الذي يقوم على الوسائل التكنولوجية الحديثة، ...