in financial matters, portfolio can be interpreted as a combination or a series of investments hold by an institution or a person. portfolio optimization is one of the most important concerns of investors for maximizing the portfolio in financial markets. the formation of portfolio is a vital and critical decision for the companies.  in fact, the selection of portfolio is to specify the capital...

The prevalent communications networks suffer from lack of spectrum and spectrum inefficiency. This has motivated researchers to develop cognitive radio (CR) as a smart and dynamic radio access promised solution. A major challenge to this new technology is how to make fair assignment of available spectrum to unlicensed users, particularly for smart grids communication. This paper introduces an i...

This paper presents an innovative active power filter design method to simultaneously compensate the current harmonics and reactive power of a nonlinear load. The power filter integrates a passive power filter which is a RL low-pass filter placed in series with the load, and an active power filter which comprises an RL in series with an IGBT based voltage source converter. The filter is assumed...

The study’s primary purpose is to propose an automatic melanoma cancer detection system using Random Forest Algorithm and Convolutional Neural Network algorithm (CNN) detect compare their accuracy. Group 1 was architecture with a sample size of 10, 2 10. They were iterated 20 times predict the accuracy percentage identifying cancer. Compared accuracy, method substantially more accurate (98%) (6...

Realizing thin-film acoustic wave resonators presents many design and fabrication challenges. Actual material specifications always differ from nominal properties employed in simulations, as they depend on the deposition technique parameters used equipment type status. Moreover, each process introduces a degree of uncertainty regarding thicknesses layers. All these factors have substantial impa...