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Now showing items 6291-6300 of 6657
Effect of vortex order on helical-phased donut mode launch in multimode fiber
(
American Scientific Publishers
, 2015 , Article)
Optical fiber sensors based on mode division multiplexing (MDM) play an increasingly vital role for real-time multi-parameter measurements. For multimode fibers, the central core region typically has defects in the refractive ...
Optical mode division multiplexing for secure Ro-FSO WLANs
(
American Scientific Publishers
, 2015 , Article)
The widespread deployment of various wireless radio access systems in public areas poses acute issues in frequency assignment. Radio-over-free-space-optics (Ro-FSO) technology enhances spectral efficiency and may pave the ...
Nanoscale evaluation of multi-walled carbon nanotube’s performance on resisting oxidization of asphalt
(
Trans Tech Publications Ltd
, 2019 , Conference Paper)
Nanotechnology has contributed significantly to different subfields of the construction industry, including asphalt pavement engineering. The improved properties and new functionalities of the nanomaterials have provided ...
Study on the use of low field nuclear magnetic resonance for detecting asphalt aging
(
CRC Press/Balkema
, 2017 , Conference Paper)
Authors of this paper recently introduced the application of Low Field Nuclear Magnetic Resonance (LF-NMR) to evaluate the aging state of asphalt mix samples. This method was able to determine the aging trends of asphalt ...
Fatigue characterisation of full-scale pavements using viscoelastic continuum damage approach for qatar
(
CRC Press/Balkema
, 2015 , Conference Paper)
The population and economy in Qatar have been expanding significantly in the past six years. Accordingly, Qatar is encountering huge development in infrastructure. The existing mix design methods have been developed in the ...
Characterisation of fatigue resistance of alternative pavement design for the state of Qatar
(
Taylor and Francis - Balkema
, 2014 , Conference Paper)
Asphalt mixtures have been designed in the past in the State of Qatar to safeguard against permanent deformation associated with high temperatures. These mixtures are typically designed to have low content of unmodified ...
Assessment of linear and nonlinear viscoelastic responses of warm-mix asphalt binders
(
CRC Press/Balkema
, 2015 , Conference Paper)
Warm-Mix Asphalt (WMA) technology is widely used in the paving industry due to its impact on reduction of asphalt mixing and compaction temperatures. Characterisation of WMA in the past had focused on evaluating the linear ...
Characterisation of air voids in w-fam samples using x-ray ct imaging
(
CRC Press/Balkema
, 2018 , Conference Paper)
This study documents the use of high-resolution X-Ray Computed Tomography to characterise air void distribution in Fine Aggregate Mixtures (FAM) prepared using Warm Mix Asphalt (WMA) additives (W-FAM). Specimens were imaged ...
Evaluation of traffic noise in the state of qatar
(
CRC Press/Balkema
, 2018 , Conference Paper)
Mitigating traffic noise is a major concern for transportation departments worldwide. A number of noise mitigation procedures are recognized to control noise emitting from traffic stream. However, noise reduction potential ...
The impact of perceived corporate social responsibility on employee engagement: The case of Qatar
(
John Wiley and Sons Inc.
, 2019 , Article)
This work investigates the role of perceived corporate social responsibility (CSR) in enhancing employee engagement (EE) in the State of Qatar. We collected survey data from local and expatriate employees of government, ...