This paper addresses the problem of managing requirements evolution in situations where functional and nonfunctional requirements interact and often contradict each other. It de nes a requirements representation scheme that captures the critical interplay between functional and non-functional requirements and makes explicit the trade-o between them. It then de nes a model of requirements evolut...

A dual mechanical port machine (DMPM) is used as an electrically variable transmission (EVT) in hybrid electric vehicle (HEV). In the conventional HEV, this machine is replaced by a planetary gearbox and two electric machines and makes this structure simpler. This paper presents field oriented control (FOC) for DMPM. For HEV application, drive efficiency and wide operating speed range are impor...

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...

The article presents a synthesis strategy focused on low power implementations of combinatorial circuits in an array-type FPGA structure. Logic functions are described by means BDD. A new form the SWitch activity BDD diagram (SWBDD) is proposed, which enables function decomposition to minimize switching circuits. essence proposed idea lies proper ordering variables and cutting diagram, ensuring...

Cognitive linguistics gives the most inclusive, consistent description of how language is organized, used and learned to date. Cognitive linguistics contains a great number of concepts that are useful to second language learners.  If-clauses in English, on the other hand, remain intriguing for foreign language learners to struggle with, due to their intrinsic intricacies. EFL grammar books are ...