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The classical Shannon sampling theorem is suitable for reconstructing a band-limited signal from its sampled values taken at regular instances with equal step by using the well-known sinc function. However, due to the inertia of the measurement apparatus, it is impossible to measure the value of a signal precisely at such discrete time. In practice, only unsymmetrically local averages of signal near...
Lorenz system generates the chaotic signal with marked features in both time and frequency domains. Such disadvantages are not benefit for its applications in chaotic masking secure communication. To overcome such defects, this paper introduces a frequency domain truncation method for Lorenz-based chaotic masking secure communication. The main work focuses on the parameter test of this frequency truncation...
This paper gives the circuit design for logistic digital chaotic system, with the analysis of parameter selection for logistic cipher code, effecting factors and calculating method of sequence cycle. Through experiments it is shown that different calculating precisions and u value can be the factor that effects the cycle period most, changing u value can change the cycle and the larger precision can...
Service industry in China has entering a period of fast growth and has been regarded as the most robust industry in China because of the high added value and relative bigger market. So entrepreneurship in this industry becomes a very popular phenomenon in recent years. The main purpose of this study is to explore the effect of corporate social capital in different stage of service industry entrepreneurship...
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