The Lure of the Virtual

Determination of Gain and Phase Margins in Lur’e Nonlinear Systems using Extended Circle Criterion

Nonlinearity is one of the main behaviors of systems in the real world. Therefore, it seems necessary to introduce a method to determine the stability margin of these systems. Although the gain and phase margins are established criteria for the analysis of linear systems, finding a specific way to determine the true value of these margins in nonlinear systems in general is an ongoing research i...

Switching fuzzy modelling and control scheme using T-S fuzzy systems with nonlinear consequent parts

This paper extends the idea of switching T-S fuzzy systems with linear consequent parts to nonlinear ones. Each nonlinear subsystem is exactly represented by a T-S fuzzy system with Lure’ type consequent parts, which allows to model and control wider classes of switching systems and also reduce the computation burden of control synthesis. With the use of a switching fuzzy Lyapunov function, the...

The desperate parent and the lure of experimental treatment.

تاثیر تقسیم توجه و دستگاه حسی مورد استفاده در مرحله مطالعه بر میزان یادآوری کاذب در مدل دیز- رودیگر- مک‌درموت

Some of theories which try to explain the mechanisms underlying false memory phenomenon postulate that false memories are due to existence of semantic relations between studied items which increase memory's vulnerability to this kind of distortion. Thus, the aim of the present study was to investigate the effect of shifting attention away from semantic relations among words in associative lists...

Designing a new robust control for virtual inertia control in the microgrid with regard to virtual damping

Background and Objectives: Virtual inertia control, as a component of a virtual synchronous generator, is used for the implementation of synchronous generator behaviour in microgrids. In microgrids that include high-capacity distributed generation resources, in addition to virtual inertia, virtual damping can also lead to improvement of frequency stability of the microgrid. The purpose of the c...

The Effect of Training in Virtual Environment on Nursing Students Attitudes toward Virtual Learning and its Relationship with Learning Style

Introduction: It is impossible to be successful in virtual training unless we consider individuals’ viewpoints toward it. Despite this fact, less attention has been paid to students’ attitudes at the end of a virtual course in the published studies. This study investigates the effect of a virtual training course on the students` attitudes toward virtual education and its relationship with learn...