this paper presents a control strategy for fuel cell/energy storage power generation system during voltage sag conditions. the hybrid dc power sources are connected to grid using power electronic converters include dc-dc converter and grid connected voltage source inverter. the power from hybrid power sources is controlled during voltage sag by designing of control strategy for dc-dc converter....

the present study adopts the perspective that metacognitive strategy instruction is bound to occur inside the classroom especially on oral tasks. accordingly, the researchers investigated whether metacognitive strategy instruction prior to oral tasks was more successful than conventional ways in improving efl learners’ oral proficiency. to this end, 56 participants studying in a language school...

This article examines the role of management in business processes in relation to the process-oriented organization and strategy formation as a formal process (strategic planning). A questionnaire designed to measure these variables after the validity and reliability among a sample of 183 managers, officials and experts in working systems, information technology and strategic planning in major ...

the central issue in strategy formulation and implementation process, or strategy-making, is the identification of environmental forces and the preparation of a plan of action to deal with them. this necessitates scanning the environment for gathering information. environmental scanning should enable the firm to identify these forces. doing this not only calls for information gathering, but als...