This paper presents a finite element formulation for the dynamics analysis of the steady and transient states of a nonlinear piezoelectric beam. A piezoelectric beam with damping is studied under harmonic excitation. A numerical method is used for this analysis. In the paper, the central difference formula of four order is used and compared with the central difference formula of two order in th...

back ground and purpose: continuing education is one of priorities of newly graduates from medicine and selection of a proper residency program is a major problem for most of them. this study examined various motives and reasons for inclination of graduates from medicine to continue education in a special residency program and become specialized. methods: this is a cross-sectional study. a ques...

In this paper, a model for hybrid transmission expansion planning (TEP) and reactive power planning (RPP) considering demand response (DR) model has been presented. In this study RPP considered by TEP for its effects on lines capacity and reduction of system expansion costs. On the other hand the expansion of the transmission system is an important subject, especially dealing with the new i...

introduction: effects of exercise on different body systems, especially cardiovascular and musculoskeletal systems are evidenced. there is a dynamic homeostatic balance between coagulation and fibrinolysis in normal circulation. effect of exercise and training on this homeostatic balance has been studied extensively but there are a few studies with regards to analysis of the effects of training...