This letter investigates the bit error rate (BER) performance of simultaneous transmitting and reflecting reconfigurable intelligent surfaces (STAR-RISs) in non-orthogonal multiple access (NOMA) networks. In investigated network, a STAR-RIS serves users located on either side surface by utilizing mode switching protocol. We derive closed-form BER expressions perfect imperfect successive interfe...

The organizational life pervaded with politics (some organizations more than others are). Hence, political behavior is an ordinary part of the Performance Appraisals (PAS) processes and PAS are highly prone by politics. Politics is an important determinant in the pay systems as both supervisors and subordinates have possibilities to influence the results of the appraisal process. The overall at...

the output error of the globoidal cam mechanism can be considered as a relevant indicator ofmechanism performance, because it determines kinematic and dynamical behavior of mechanicaltransmission. based on the differential geometry and the rigid body transformations, themathematical model of surface geometry of the globoidal cam is established. then we present theanalytical expression of the ou...