this paper is a computational study of the behavior of aerodynamics  characteristics of an airfoil with blunt trailing edge and  studies the effects aerodynamic performance caused by modifications made to the trailing edge. blunt trailing edge airfoils are of interest in the engineering of large wind turbine blades because they allow for a strong structure with a high aerodynamic lift to struct...

Miniature 310μm tall copper-air rectangular coaxial lines (RCL) with the inner conductor supported by periodic dielectric straps are demonstrated in this paper. The measured line loss is about 0.2dB/cm at 26GHz, while the isolation between two parallel lines with a center-to-center separation of 700μm is better than 60dB. Several quasi-planar components are designed and fabricated on the same w...

In view of the effective perception demand PD (Partial Discharge) insulation defect in-service GIS (Gas Insulated Switchgear), external UHF (Ultra High Frequency, 0.3−3 GHz) sensing technology for from resin hole is studied in this paper. Firstly, rectangular waveguide theory used to analyze electromagnetic wave propagation characteristics disc insulator. It found that energy leaked mainly conc...

This study examines employee stock options in private entrepreneurial companies. I focus on private U.S. venture-backed firms because they are renowned for the intensity and organizational depth of their stock option grants. Contrary to simple stereotype, however, I show that 27% of U.S. venture-backed firms do not grant stock options to all employees. I seek to explain this by theorizing that ...