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Now showing items 171-180 of 267
Bridging the gap: Using design based activities to develop problem-solving skills in Qatari high school students
(
Hamad bin Khalifa University Press (HBKU Press)
, 2015 , Conference Paper)
A substantial number of secondary school students are accepted into engineering schools without adequate exposure to key engineering based skills, such as analytical thinking, problem solving, critical thinking and design. ...
Factors pertaining to academic probation of engineering students: A case study
(
Hamad bin Khalifa University Press (HBKU Press)
, 2015 , Conference Paper)
Ensuring normal progression of students isof paramount importance due to its financial implications in a higher education institution. An indicator that reflects how well an institution is doing in this respect is in the ...
Investigating the biodiversity and current status of the historically renowned oyster beds of Qatar
(
Hamad bin Khalifa University Press (HBKU Press)
, 2015 , Conference Paper)
The "Pearl Oyster" Pinctada radiata has long been associated with the nation of Qatar. Historically pearl oysters were harvested in huge quantities in the Arabian Gulf with Qatari pearls making up a large percentage of the ...
Retrofitting traditional neighborhoods in Doha
(
Hamad bin Khalifa University Press (HBKU Press)
, 2015 , Conference Paper)
Rapid urbanization in Doha during the past few decades has resulted in the disappearance of traditional neighborhoods that were replaced by modern mega real-estate developments, public buildings and projects. More traditional ...
Contaminant metals in costal marine sediment along the Doha Bay, Qatar
(
Hamad bin Khalifa University Press (HBKU Press)
, 2015 , Conference Paper)
Heavy metals pollution in marine environments has become a worldwide problem with the fast industrial development in the east coastal region of Qatar, especially in the Doha bay area. Heavy metals are expected to be presented ...
Observations of hydrographic properties, dissolved oxygen (DO) and chlorophyll-A (Chl-a) (phytoplankton biomass) within the exclusive economic zone (EEZ) of Qatar (central Arabian Gulf)
(
Hamad bin Khalifa University Press (HBKU Press)
, 2015 , Conference Paper)
In situ observations of physical, chemical, and biological parameters of the Qatari water column were conducted to understand the temporal (seasonal) and spatial (regional) variability in the vertical and horizontal ...
Global change: The Arabian Gulf ecosystem- An introduction
(
Hamad bin Khalifa University Press (HBKU Press)
, 2015 , Conference Paper)
The Arabian Gulf is a main source of wealth and food for the people of the Gulf countries. For hundreds of years, the Gulf used to be the main source for some of the finest pearls in the world. It harbors highly diverse ...
Implementation of iterative learning control based deadtime compensation for PWM inverters
(
IEEE
, 2015 , Conference Paper)
Deadtime effects in PWM inverters are nonlinear and depend on the switching frequency of the inverters and the types of power devices, snubber circuits, and loads. Several deadtime compensation methods were proposed in the ...
ANN-based extraction approach of PV cell equivalent circuit parameters
(
IEEE
, 2015 , Conference Paper)
In most practical cases, a PV array is constructed from a combination of standard PV units (solar cells or panels) connected in series and/or in parallel to obtain the desired power, voltage and current ratings. However, ...
Space vector pulse width modulation techniques for a five-phase impedeance source and quazi impedeance source inverters
(
IEEE
, 2015 , Conference Paper)
Impedance source inverter (ZSI) and its variant quasi impedance source inverter (qZSI) are single stage inverters that transform dc to ac and boost the source voltage at the same time. These topologies have attracted great ...