基于系统混沌理论的企业创新过程管理研究

混沌的本质是确定性动力系统所表现出的内在随机性或不确定性现象。企业创新,无论是成员个体还是组织群体,都要经历混沌过程。从系统混沌理论的视角看,企业创新过程管理的关键是激发创新混沌的产生、引导创新混沌的发展和促进创新混沌的结束,进而促使企业系统从低级有序向高级有序转化。为此,企业创新过程管理需要加强创新混沌的诱发条件建设,加强创新混沌过程的引导控制以及促进创新混沌的稳定。

企业文化变革过程管理--基于系统混沌理论的视角

企业文化变革是企业成功的根本保证，对提高企业生产率和促进企业发展具有重要意义。本文从系统混沌理论的视角对企业文化变革过程管理进行了研究，指出企业文化变革过程管理的关键是激发创新混沌的产生、引导创新混沌的发展和促进创新混沌的稳定，进而促使企业文化变革顺利进行。

混沌动态系统取向的二语发展研究可视化分析

基于Web of ScienceTM核心合集及CNKI数据库中收录的以该理论取向的二语发展研究为主题的国内外文献数据(1997—2017年),借用CiteSpace5.1绘制科学知识图谱,进行聚类分析、突变词分析、关键词分析,对比国内外该理论指导下二语动态发展研究在核心领域与热点演进的共性与差异。研究发现近20年来国内外相关研究核心领域主要涉及理论内涵与方法论、学习者语言系统与学习者个体差异;研究热点演进路径均由理论建构到实证探究,国内多讨论混沌,国外则多关注涌现;国内相关研究发展较国外明显滞后,实证成果不足;教师身份、课堂环境及自主学习可拓展为国内研究的新热点。

FLIGHT CONFLICT FO RECASTING BASED ON CHAOTIC TIME SERIES

In order to grasp the evolution of flight conflict amount accurately and to forecast the amount, chaos in flight conflicts is studied. Firstly, a fault tree of flight conflicts is established based on the man-machine-environ- ment system engineering theory. The chaotic characteristics of flight conflict are analyzed from the qualitative point of view. Secondly, an improved chaotic algorithm for the largest Lyapunov exponent is proposed based on the small-data method and the wavelet de-noising theory. Chaos in flight conflict time series is identified by the improved chaotic algorithm from the quantitative point of view. Finally, a case study by the chaos forecasting al- gorithm is performed and the results are evaluated by the gray error checking ： Correlative value of posterior error is 0. 220 9〈0. 35, and micro-error probability is 0. 985 3〉0.95. Such results show the chaos forecasting algo- rithm is effective, thus it is feasible to analyze and forecast flight conflict by chaotic theory.

Partition airflow varying features of chaos-theory-based coalmine ventilation system and related safety forecasting and forewarning system

To realize real-time monitoring and short-term forecasting and forewarning of coalmine ventilation systems(CVS), in this paper, we first established a joint surface and underground CVS safety management system consisting of main ventilation fan, safety-partition linked passageways, and air-required locations. We then applied chaos theory to identify the air quantity and gas concentration of underground partition boundaries, and adopted a fixed data quantity, multi-step progressive, weighted first-order local-domain method to setup a chaos prediction model and a CVS safety forecasting and forewarning system formed by the normal change level, orange forewarning level, and red alarm level. We next conduct the on-field application of the system in a coalmine in Jining, Shandong, China. The results showed that (1) in the statistical scale of 5 min, the changes in both air quantity and gas concentration along CVS partition airflow boundaries were characteristic of chaos and could be used for short-term chaos prediction, and the latter was more chaotic than the former;(2) the setup chaos prediction model had a higher prediction precision and the established safety prediction system could not only predict the variation in CVS stability but also reflect the rationality of underground mining intensity. Thus, this CVS safety forecasting and forewarning system is of better application value.

New Predictor-Corrector Methods Based on Exponential Time Differencing forSystems of Nonlinear Differential Equations

We present the new predictor-corrector methods for systems of nonlinear differential equations, based on the method of exponential time differencing. We compare the present schemes with the explicit multistep exponential time differencing and Adams–Bashforth–Moulton method. The numerical results show that the schemes are more accurate and more efficient than Adams predictor-corrector method. The exponential time differencing method has been developed and perfected by the present studies.

Different Types of Projective Synchronization in a Class of Time-Delayed Chaotic Systems Using Active Control Approach

We study different types of projective synchronization （projective-anticipating, projective, and projectivelag synchronization） in a class of time-delayed chaotic systems related to optical bistable or hybrid optical bistable devices. We relax some limitations of previous work, where the scaling factor a can not be any desired value. In this paper, we achieve projective-anticipating, projective, and projective-lag synchronization without the limitation of a. A suitable controller is chosen using active control approach. Based on the Lyapunov stability theory, we derive the sufficient stability condition through theoretical analysis. The analytical results are validated by the numerical simulations using Ikeda model and Mackey-Glass model.

Global Exponential Projective Synchronization and Lag Synchronization of Hyperchaotic Lü System

This paper investigates the projective synchronization and lag synchronization of a new hyperchaotic system[Physica A 364(2006)103].On the basis of Lyapunov stability theory,two novel nonlinear controllers are respectivelydesigned to guarantee the global exponential projective synchronization(including complete synchronization and anti-synchronization)and lag synchronization.Finally,numerical simulations are given to show the effectiveness of the mainresults.

A Secret Sharing Featured Secure Communication System Based on Dual Synchronization of Chaos in Colpitts Circuits

A novel digital secure communication system employing dual synchronization of chaos in two pairs of Colpitts circuits is proposed. The binary information to be transmitted is firstly modulated by digital modulation scheme, and then mixed together with two chaotic waveforms generated by two Colpitts circuits with different circuit parameters. Thus the combined （and encrypted） signal is transmitted through an additive white Gauss noise （AWGN） channel. In the receiver, the binary message can he recovered only when the parameters of the two Colpitts circuits are known. If the parameters of the two Colpitts circuits are owned by two different users, this can be viewed as a （2,2） threshold scheme. Based on large amount of simulations, the bit error rate （BER） performance of this communication scheme is presented.

A Criterion for Stability of Synchronization and Application to Coupled Chua's Systems

We investigate synchronization in an array network of nearest-neighbor coupled chaotic oscillators. By using of the Lyapunov stability theory and matrix theory, a criterion for stability of complete synchronization is deduced. Meanwhile, an estimate of the critical coupling strength is obtained to ensure achieving chaos synchronization. As an example application, a model of coupled Chua＇s circuits with linearly bidirectional coupling is studied to verify the validity of the criterion.

Modified Projective Synchronization of a New Hyperchaotic System via Nonlinear Control

In this paper, a nonlinear control scheme of two identical hyperchaotic Chert systems is developed to realize their modified projective synchronization. We achieve modified projective synchronization between the two identical hyperchaotic systems by directing the scaling factor onto the desired value. With symbolic computation system Maple and Lyapunov stability theory, numerical simulations are given to perform the process of the synchronization.

Projective Synchronization Between Two Nonidentical Variable Time Delayed Systems

In this paper, we propose a method for the projective synchronization between two different chaotic systems with variable time delays. Using active control approach, the suitable controller is constructed to make the states of two different diverse time delayed systems asymptotically synchronize up to the desired scaling factor. Based on the Lyapunov stability theory, the sufficient condition for the projective synchronization is calculated theoretically. Numerical simulations of the projective synchronization between Maekey-Glass system and Ikeda system with variable time delays are shown to validate the effectiveness of the proposed algorithm.