Khalfallah N.,Setif University1 |
Khalfallah N.,University of Abderrahmane Mira de Béjaïa |
Khalfallah N.,University of Wolverhampton |
Boukerram A.,Setif University1 |
And 5 more authors.
Communications in Computer and Information Science | Year: 2014
In this paper we present how mobile learning (mLearning) can be personalized/adaptive via the use of the declarative approach in order to be adapted with the Algerian context.The background to this work is mLearning progress in Algerian society, based on several areas such as the socio-cultural, institutional, historical, epis-temological, pedagogic, linguistic, infrastructural and demographic context.This context allows us to think about introducing the mLearning concept to Algerians, especially students, by developing a mLearning platform after the arrival of 3G technology in 2013. We have chosen PBL as an active pedagogical strategy to be implemented with a mLearning platform.In Algeria, due to the diversity known in many fields, the personalization of the PBL model has become indispensable and vital. That is why we propose in this study an architecture that shows the relationship between the adaptivity, mobile ontology (mOntology) and the reuse of declarativity approach results in order to design an Adaptive/Personalized Virtual Document (AVD) for an institutional strategy model (the PBL model) based on the diversity of the Algerian context (learners, learning needs, languages, cultures, society constraints, infrastructure needs...). © Springer International Publishing Switzerland 2014.
Chaoui A.,Setif University1 |
Gaubert J.-P.,Setif University1 |
Bouafia A.,Setif University1
Journal of Electrical Systems | Year: 2013
This paper deals with the concept and analysis of direct power control (DPC) for a shunt active power filter (SAPF). From the topology of the SAPF and its equivalent scheme a new predefined switching table is designed by analyzing the voltage source inverter (VSI) switching vectors effect on the total derivatives of instantaneous active and reactive power. To maintain the VSI dc-bus voltage at the required level an IP controller is used to obtain the active power control. The active and reactive powers are directly controlled by selecting the optimal switching state. The main advantages of this method are that it provides a sinusoidal source current and unity power factor with no need of linear current controllers and coordinates transformations or modulators. Extensive simulation and experimental results obtained from steady and transient states have proven the excellent performance and verify the validity and effectiveness of the proposed power control scheme. © JES 2013.