The frequent exchange of multimedia information in thepresent era projects an increasing demand for copyright protection. In this work, we propose a novel audio zero-watermarking technology based on graph Fourier transform enhancing the robustness with respect to approach, combined shift operator is used construct signal, upon which analysis performed. selected maximum absolute coefficients rep...

introduction in recent years methods based on radio frequency waves have been used for detecting breast cancer. using theses waves leads to better results in early detection of breast cancer comparing with conventional mammography which has been used during several years. materials and methods in this paper, a new method is introduced for detection of backscattered signals which are received by...