In this paper, we use a high-order iterated function generated by block cipher as the nonlinear filter to improve the security of stream cipher. Moreover, by combining the published rounds function in block cipher and OFB as the nonlinear functional mode with an extra memory module, we enable to control the nonlinear complexity of the design. This new approach fuses the block cipher operation m...

The first infinite families of symmetric designswere obtained fromfinite projective geometries, Hadamardmatrices, and difference sets. In this paper we describe two general methods of constructing symmetric designs that give rise to the parameters of all other known infinite families of symmetric designs. The method of global decomposition produces an incidence matrix of a symmetric design as a...

Passive RFID tag system requires low-power consumption. In this paper, the clock shutdown technology was been used to reduce power consumption and the module re-used was been used to reduce chip area. The design was been described for the digital part of RFID tag chip based on ISO/IEC15693 standard, that was including decoder, encoder, CRC generation and verification, EEPROM interface block ,th...

block ramps are hydraulic structures which are commonly used in river restoration projects. especially in the last few decades, the use of this type of structures have become more and more popular. they furnish a correct balance between the hydraulic functioning and the environmental care, as they minimize the impact on the environment in which they are located. in addition, they can be conside...

This paper deals with disturbance rejection with global stabilization of a class of nonlinear multi-input-multi-output (MIMO) systems using output feedback. The class of nonlinear MIMO systems are assumed to be transformed into an upperblock-triangular structure with each block in the output feedback form with respect to its own state variables, and the interactions among the outputs are allowe...

Purpose: of this paper is present a new approach to modelling and design the low cost mono-block dental implants based on the integration of the computer aided techniques. This approach provides the automation of the design process of the mono-block dental implants. Design/methodology/approach: The approach used to develop the modelling and design of the mono-block dental implants are based on ...