PURPOSE OF THE STUDY The wear of articular surfaces is considered one of the most important factors limiting the life of total hip arthroplasty (THA). It is assumed that the particles released from the surface of a softer material induce a complex inflammatory response, which will eventually result in osteolysis and aseptic loosening. Implant wear is related to a friction coefficient which depe...

In this study, structural analyses were conducted to analyze the performance of a bridge which friction pendulum systems (FPSs) applied using different models. A Coulomb model and rate dependent constructed coefficient PVDF/MgO material effect analysis The uses single regardless velocity, while can reflect change in with velocity. Nonlinear time history seismic fragility confirm responses bridg...

The development results of a single-point contact system set up as pendulum to study the laws rolling resistance contacting bodies at distance significantly reduced compared elastic spot size. designed device uses physical sustained by only one ball on flat polished surface. problem stability swing plane is solved. A phenomenological theory described. surface tension solids zone, parameters fre...

Abstract—In order to reduce numerical computations in the nonlinear dynamic analysis of seismically base-isolated structures, a Mixed Explicit-Implicit time integration Method (MEIM) has been proposed. Adopting the explicit conditionally stable central difference method to compute the nonlinear response of the base isolation system, and the implicit unconditionally stable Newmark’s constant ave...

The use of hip joint simulators to evaluate the tribological performance of total hip replacements is widely reported in the literature, however, in vitro simulation studies investigating the tribology of the natural hip joint are limited with heterogeneous methodologies reported. An in vitro simulation system for the complete natural hip joint, enabling the acetabulum and femoral head to be po...

We consider the model of quantum computer, which is represented as a Ising spin lattice, where qubits (spin-half systems) are separated by the isolators (two spinhalf systems). In the idle mode or at the single bit operations the total spin of isolators is 0. There are no need of complicated protocols for correcting the phase and probability errors due to permanent interaction between the qubit...