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Mistuned blades are inevitable in compressor, and modal parameters of mistuned blades will change significantly compare with tuned blades. In this paper, mistuning stiffness is introduced and a lumped parameter model of coupled multi-blades is established. Mode localization of mistuned blades is analyzed by this model. When a crack appears in mistuned blades, local flexibility method is used to analyze...
Zhang neural network (ZNN) has shown powerful abilities to solve a great variety of time-varying problems in the real domain. In this paper, to solve the time-varying complex quadratic programming (QP) problems in the complex domain, a new type of complex-valued ZNN is further developed and investigated. Specifically, by defining two different complex-valued error functions (termed Zhang functions),...
Social unconventional emergencies not only bring disaster to human life and living environment, but also cause losses to the country and the people. What's more, their occurrence tends to cause series of chain reactions and inspire lots of social problems, thus likely to break the social balance, and lead to national instability and social disharmony. In this paper, "concern degree model"...
This study investigates adoption/use behavior within the context of college students. A research framework based on the Technology Acceptance Model (TAM) is developed to identify factors that would influence the adoption and continue use of the credit card. Besides the "perceived usefulness" and "perceived ease of use", this paper introduces the "perceived risk", "promotion",...
This Individualpsilas representative activity-travel pattern is the foundation of analyzing travel time, space and mode. Based on the actual data of 2004psilas resident trip survey in one metropolis of north China, by using the systematic cluster analysis, thousands of citizens are divided into groups with representative activity-travel patterns according to representative social-economic attributes...
With rapid development of communication technology, the signal integrity is impacting the system performance much more than before. So either in the IC design or in the system design, it is very important to investigate negative timing analysis and its mathematical modeling in the high speed integrated circuit. In the paper, we introduce the origin of the negative timing script in the deep sub-micrometer...
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