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Now showing items 11-20 of 173
Sub-channels selection schemes with interference management for underlay cognitive networks
(
IEEE
, 2013 , Conference Paper)
Cognitive Radio is a promising concept that offers solution to spectral crowding problem by introducing opportunistic usage of the unoccupied licensed frequency bands. Improving the network capacity and reliability of the ...
ePBL: Design and implementation of a Problem-based Learning environment
(
IEEE
, 2013 , Conference Paper)
Problem-based Learning (PBL) has been utilized by educators for almost half a century as a powerful and engaging student-centered pedagogy. PBL has also been employed across a wide range of disciplines and areas in education ...
جغرافية صادرات الغاز الطبيعي لدولة قطر
(2013 , Conference Paper)
صادرات الدول لموارد طبيعة تنتجها ، او لسلع تنتجها ، تعمل على تقوية الناتج المحلي ، وخلق فرص عمل ، وايجابية الميزان التجاري ، وزيادة الرصيد من العملات الصعبة .
لم تكن دولة قطر قبل ظهور النفط مصدرة الا القليل من المنتجات ...
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 ...
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 ...
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 ...
A Simulink model of an active island detection technique for inverter-based distributed generation
(
IEEE
, 2013 , Conference Paper)
With the increased involvement of Distributed Power Generation Systems (DPGSs) into the conventional power system, the structure has evolved and therefore has brought in various challenges albeit improving flexibility and ...