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Now showing items 21-30 of 263
Using hierarchical composite approach to improve mechanical response of Mg and Mg–Bi2O3 nano-composites
(
Elsevier, Ltd
, 2013 , Article)
Novel Mg nano-composites reinforced with either Bi2O3 nano-particles or hybrid Al–Bi2O3 particles (Bi2O3 nano-particles hybridized with Al using ball milling) have been synthesized, in this work, through powder metallurgy ...
Measuring construction materials price fluctuation risk
(
Canadian Society for Civil Engineering
, 2013 , Conference Paper)
Construction projects costs are believed to be highly susceptible to a combination of internal and external factors. One of these factors is the prices of construction materials and the risk of their fluctuation. This paper ...
Developing a framework for calculating LCA normalization factors for the State of Qatar
(
Canadian Society for Civil Engineering
, 2013 , Conference Paper)
Life Cycle Analysis (LCA) has recently emerged as a powerful tool for assessing the environmental impact of materials, systems and processes used in building construction. With its ability to clarify the ambiguities of the ...
Microstructure, thermal and mechanical response of AZ51/Al2O3 nanocomposite with 2 wt.% Ca addition
(
Elsevier, Ltd
, 2013 , Article)
In the present study, new AZ51/Al2O3–2Ca magnesium nanocomposite was successfully synthesized by simultaneously adding 2wt.% aluminum, 2wt.% Ca and 1.5vol.% nanosized Al2O3 (50nm) into AZ31 matrix using a disintegrated ...
Scales of flows: Qatar and the urban legacies of mega events
(
Emerald
, 2013 , Article)
In 2022, Qatar will become the first Middle Eastern and Arab country to host such an important Mega-Event as the FIFA World Cup. Global cultural and sporting Mega Events have driven the urban transformation of cities such ...
Caloric expenditure estimation for health games
(
Hamad bin Khalifa University Press (HBKU Press)
, 2013 , Conference Paper)
With the decline in physical activities among young people, it is essential to monitor their physical activity and ensure their calorie expenditure is within the range necessary to lead a healthy life style. For many ...
A robust method for line and word segmentation in handwritten text
(
Hamad bin Khalifa University Press (HBKU Press)
, 2013 , Conference Paper)
Line and word segmentation is a key-step in any document image analysis system. It can be used for instance in handwriting recognition when separating words before their recognition. Line segmentation can also serve as a ...
Performance of a five-phase boost inverter-fed submersible induction machine
(2013 , Conference Paper)
An electrical submersible pump (ESP) motor is preferably fed from a low voltage variable-frequency drive (VFD) followed by a step-up transformer. The motor and drive connection through a long feeder usually causes over ...
Generalized theory of mixed pole machines with a general rotor configuration
(
Elsevier B.V.
, 2013 , Article)
This paper introduces a generalized theory for the operation of mixed pole machines (MPMs). The MPM has two stator windings, namely the main winding with pole pairs P1 and the control winding with pole pairs P2. The MPM ...
Modified modulation scheme for photovoltaic fed grid-connected three-phase boost inverter
(
IEEE
, 2013 , Conference Paper)
Transformer-less photovoltaic (PV) inverters are the major functional units of modern grid-connected PV energy production systems. In general, two power conversion stages are required when low-voltage unregulated photovoltaic ...