The main purpose of this research is portfolio optimization in Tehran securities exchange using the black hole algorithm and the Gravitational Research algorithm. We also propose an algorithm named Hybrid Algorithm which combines the two algorithms above to cover the weaknesses of these two algorithms. Finally we compare the results with the Markowitz model and choose the optimal algorithm.<br ...

In today's competitive market, technology transfer is an important problem for firms, organizations and governments. Therefore, making right decisions on selecting a suitable technology and designing an appropriate process to transfer it may have significant influence on the performance of organizations. In this paper, we present a new method to obtain a suitable technology transfer strategy fo...

A very low power consumption viterbi decoder has been developed by low supply voltage and 0.15 μm CMOS process technology. Significant power reduction can be achieved by modifying the design and implementation of viterbi decoder using conventional techniques traceback and Register Exchange to Hybrid Register Exchange Method (HREM), Minimum Transition Register Exchange Method (MTREM), Minimum Tr...

Hybrid computational schemes combining the advantages of a method moments formulation field integral equation and T-matrix are developed in this article. The hybrid methods particularly efficient when describing interaction electrically small complex objects large canonical shapes such as spherical multilayered bodies where is reduced to Mie series making an interesting alternative design impla...