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This paper focuses on fuzzy multiple-attribute decision with weights unknown and fuzzy information. Starting from the structural feature of fuzzy information, we propose the compound quantification description mode based on centralized quantification value, and establish a fuzzy information comparison method based on synthesizing effect. Through real case, all the results indicate that the fuzzy multiple-attribute...
A new vector particle swarm optimization (NVPSO) is proposed to solve constrained optimization problems in this paper. In NVPSO, we introduce a shrinkage coefficient to ensure that all dimensions of a particle are within lower and upper bounds, and a new function to determine whether the particle is within the feasible region. One-dimensional search optimization methods are selected in NVPSO algorithm...
9-round impossible differentials of SNAKE-2 are found due to the simple linear transformation in its round function, and 10 to 12-round SNAKE-2 are attacked by using these impossible differentials.
General expressions of transformed medium parameters are derived for cylindrical cloaks with polygon cross sections. An irregular polygon cloak is designed to show the flexibility of the method. Its invisibility to external incident waves is verified by full-wave simulations. Since a polygon can be tailored to resemble any objects to be concealed, the method in this paper provides a powerful tool...
In this article, a novel 0.2 THz imaging system is presented. It is made up of Gunn oscillator, dual mode antenna, off-axis reflector antenna and Schottky diode detector. It has many merits such as: small-size, low-cost, low-power-supply, and room-temperature-operational compared to the THz-time domain spectrometer (THz-TDS) which has a large-size, is expensive, and has strict requirements to working...
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