Stabilization of Chaotic Systems With Both Uncertainty and Disturbance by the UDE-Based Control Method

Within the context of China’s Urban Employees’ Basic Pension Insurance (UEBPI), this paper constructs an actuarial model to analyze the financial imbalance risk of contribution rate reduction and to investigate the possibility of further reducing the contribution rate. It is found that the UEBPI fund would show financial imbalance risk in 2024 if the contribution rate is 16%, and no control strategy is introduced. In the case of single strategy (the collection system reform, delay of retirement age, or the introduction of external finance), the financial sustainability of the UEBPI fund could be improved to some extent, whereas the financial imbalance risk remains huge. In the case of a package of control strategies being implemented, the UEBPI fund could be able to continue its operation until 2060, and the contribution rate can be further reduced by 0–4 percentage. Therefore, the implementation of a package of control strategies presents a prerequisite for controlling the financial imbalance risk and further reducing the contribution rate.

Section: Actuarial Modelmentioning

confidence: 99%

Financial Imbalance Risk and Its Control Strategy of China’s Pension Insurance Contribution Rate Reduction

Jing

Cai

Zhu

et al. 2021

“…erefore, the track can be compressed to find key points and remove redundant data on the premise that there is no loss of essential feature track [11][12][13][14]. In order to reduce the data amount, it is necessary to find the retained or removed data point indicators.…”

Section: Compression Algorithm Based Onmentioning

confidence: 99%

Trajectory Data Compression Algorithm Based on Motion State Changing

Zhang

2021

The trajectory information generated by the moving object plays an important role in studying the object movement. In this paper, a trajectory data compression algorithm based on the motion state changing is proposed to reduce trajectory data storage space and increase compression speed, which can accurately show the motion state and trajectory characteristics. This study has certain significance for the exploration of mass traffic data and the planning of traffic network. Combining the angle threshold with the velocity threshold of a moving object, the key data points are found and the redundant information is removed. Subsequently, the compressed trajectory is obtained. The experimental results show that the new algorithm can help to improve compression efficiency. The compressed trajectory has high similarity with the original trajectory in movement tendency.

“…When the feedback information from the other variables is not complete, many of the systems can remain chaos [14][15][16] even in the jerk structure as hypogenetic flows [14]. Hot research on chaotic systems mainly focuses on chaos control [17][18][19][20], Lyapunov exponent calculation and analysis [21,22], and doubling and growth of attractors [23,24], and chaotic systems with hidden attractors are also hot research topics because such systems are extremely prone to multistable phenomena, which are a common phenomenon in nature. Considering from equilibrium point, hidden attractors can be mainly of several types, one stable equilibrium [25], a line or plane equilibrium [26,27], or no equilibrium [28].…”

Section: Introductionmentioning

confidence: 99%

A Novel Hypogenetic Chaotic Jerk System: Modeling, Circuit Implementation, and Its Application

Liu

Rajagopal

Lei

et al. 2020

When revising the polarity and amplitude information in the feedback, a unique hypogenetic jerk system was obtained which has two controllers to switch the equilibria between stable and unstable. After providing some basic dynamical analysis, an electronic circuit was implemented, and the phase trajectory in the oscilloscope agrees with the numerical simulation. Further exploration shows that this unique chaotic system has superior performance as a random number generator or in voice encryption application.