Background Cardiovascular involvement is one of the leading causes of mortality in systemic sclerosis (SSc) and is reported to be higher in men as compared with women. However, the cause of this ...

The resulting four-port scattering matrix is compared to the respective transmission functions of a second-order filter which relates prototype coefficients to inverter values. The method is ...

The performance of array antennas is critical in modern communication systems, particularly in applications that demand accurate beamforming and minimal side lobe interference. This paper investigates ...