Study on near-field acoustic levitation characteristics in a pressurized environment

Self-running and self-floating two-dimensional actuator using near-field acoustic levitation

Modeling near Field Acoustic Levitation by Flexural Mode including Gas Inertia

We report a combined theoretical and experimental investigation on the near field acoustic levitation (NFAL). In NFAL a disk is levitated at a height much smaller than the acoustic wavelength. The levitation force is induced by the gas squeeze film between the sound radiation surface and the levitated disk. By taking into account the flexural vibration of the sound radiation surface as well as ...

a study on rate making and required reserves determination in reinsurance market: a simulation

reinsurance is widely recognized as an important instrument in the capital management of an insurance company as well as its risk management tool. this thesis is intended to determine premium rates for different types of reinsurance policies. also, given the fact that the reinsurance coverage of every company depends upon its reserves, so different types of reserves and the method of their calc...

A study on the characteristics of externally pressurized air bearings

In this study the direct numerical method is applied to solve the perturbed Reynolds" equation. To solve it the perturbed dimensionless mass f low rate is used as the boundary condition under the inherently compensated restrictor. The dynamic characteristics of a rotor supported in the externally pressurized air bearings, such as stiffness and damping coefficients, are analyzed, and as a result...

predicting intention to adopt interorganizational linkages: a study in iranian automative indusrty supply chain in b2b environment

در این پایان نامه مسایل مربوط به ارتباطاط سازمانی و نحوه تاثیر گذاری فناوری اطلاعات بر روی آنها بررسی میشود. انواع مدلهای سازمانی و بررسی متغیرهای مختلف بصورت آماری از اهداف این پایان نامه می باشد. ارتباطاط edi در محیط های b2b هدف اصلی مدل های بررسی شده می باشد.