Binbin Qiu

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As one of the most important factors influencing the development potential of the country, China's population attracts considerable attention. Some official organizations regularly publish the predictions of China's population every calendar year. However, most of the predictions use the standard cohort-component method, which does not allow for all(More)
To solve dynamic system of linear equations with square or rectangular system matrices in real time, a discrete-time Z-type model based on neural network is proposed and investigated. It is developed from and studied with the aid of a unified continuous-time Z-type model. Note that the framework of such a unified continuous-time Z-type model is generic and(More)
In recent years, extensive efforts have been committed to the temperature forecast work, and more and more studies have indicated that the temperature is rising. For the purpose of forecasting long-term temperature trend, a temperature forecast method named multiple sine functions decomposition (MSFD) method is presented in this paper. Based on the(More)
In this paper, the tracking control problem of a 3-input 3-output nonlinear system is investigated and solved. By adopting and generalizing Zhang-gradient (ZG) method, as the novel combination of Zhang dynamics (ZD) and gradient dynamics (GD), in a quite different way (i.e., with GD used additionally once more), a ZG controller group is designed and(More)
The recovery and prediction of Northern American population data, which are closely related to the future development of Northern America and even the whole world, have become significant subjects and captured great attention among sociologists as well as scientists. However, most of the relevant researches are just based on fertility, mortality or other(More)
This paper primarily demonstrates the effectiveness of the Z-type methodology for solving the problem of time-variant matrix inverse (termed Zhang matrix inverse, ZMI). As a case study of ZMI with examples, the online solution of ZMI is investigated in this paper. Specifically, different Zhang functions (ZFs), which lead to different effective Z-type models(More)
Oxidation ditch is the most economical and effective sewage biochemical treatment technology, and the inverted umbrella aerator is the key equipment in the oxidation ditch, which have the effects of oxygenation, mixing and plug-flow. And more, the oxidation ditch flow field is closely related with aerator blade shapes. In this paper, a new aerator with(More)
The synchronization control of Lu chaotic systems is focused on this paper, by using the controller designed by Zhang dynamics (ZD) method, with only one input. The ZD method is a handy and simple method for designing control input. The controller, designed by ZD method, is able to synchronize Lu chaotic systems. Engineering-type steady-state analysis is(More)