In this paper, a non-blind watermarking method for protecting the copyright of digital color images is introduced. This based on combination transforms (DWT, DCT) in frequency domain. The embedding process depends partition host image into 16×16 non-overlapped blocks and use edge entropy metric to choose appropriate insertion purpose increasing imperceptibility proposed system. As extraction pr...

Aiming at the privacy protection of lightweight nodes based on Bloom filters in blockchain, this paper proposes a new method. Considering superimposition effect query information, node and filter are regarded as two parties game. A mechanism mixed strategy Nash equilibrium is proposed to judge information query. On basis, algorithm when probability privacy, not being leaked, less than protectio...

Marine structures are one of the most important and susceptible facilities in Iran due to corrosion. The two methods of Cathodic Protection, namely, the cathodic protection with sacrificial anodes and cathodic protection using impressed current, are widely used for corrosion protection. According to the former, sacrificial anodes are installed at several points in the structure. Position of the...

Marine structures are one of the most important and susceptible facilities in Iran due to corrosion. The two methods of Cathodic Protection, namely, the cathodic protection with sacrificial anodes and cathodic protection using impressed current, are widely used for corrosion protection. According to the former, sacrificial anodes are installed at several points in the structure. Position of the...