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In order to improve image denoising effect, an exponential threshold function de-noising method is proposed, which can overcome the continuity problem of the hard-threshold function, and eliminate the constant deviation problem of the soft threshold function by constructing a new threshold function with arbitrary derivable. Experimental results showed that the new threshold function could obtain higher...
Atomic-layer two-dimensional (2D) semiconductors are considered as fundamental materials for next-generation nano-optoelectronic devices. Based on the third-order optical nonlinearity, saturable absorption, and band-gap structures of 2D semiconductors, 2D broadband optical switchers were proposed and experimentally constructed for modulating the laser operation, especially in the infrared range; meanwhile,...
This software serves as a multimedia tutorial that explains the basic operations of three molecular modeling and data processing Softwares, Gaussian, HyperChem and Origin, with abundant cases demonstrating their practical use. This paper elaborates on the multimedia software with regard to its main content, design idea, development tools, programming method, features as well as effect.
In the field of digital signal processing, only adaptive filter can deal with some random signal, noise or the time-varying signal. The adaptive filter can track the changes of the signal and noise so as to realize optimal filtering. This paper introduces the structure and principle of adaptive filters. Recursive Least Square (RLS) Algorithm, presents the implementation of simulation in the software...
The location problem is one kind of special type optimized problems. The Min-max weighted distance problem is a new class of location problem, its decision problem is a NP-Complete problem. This paper designs a genetic algorithm by some properties of the problem, and gives the design and selection method of crossover operator, mutation operator and reproduction operator.
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