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- In this paper, the bifurcation of limit cycles for a quartic polynomial system is investigated. 摘要研究一类四次系统的极限环分枝问题。
- In this article, the center conditions, isochronous center conditions and bifurcation of limit cycles at infinity for a class of fifth system are investigated. 摘要研究一类五次系统无穷远点的中心、拟等时中心条件与极限环分支问题。
- In this article,the center conditions,isochronous center conditions and bifurcation of limit cycles at infinity for a class of fifth system are investigated. 研究一类五次系统无穷远点的中心、拟等时中心条件与极限环分支问题。
- THE NUMBER AND BIFURCATION OF LIMIT CYCLES FOR A CLASS OF CUBIC SYSTEMS 一类三次系统的极限环个数与奇点分支
- Center Conditions and Bifurcation of Limit Cycles from the Equator for a Class of Cubic Polynomial Differential System 一类三次系统无穷远点的中心条件与赤道极限环分支
- Bifurcation of limit cycles of the equator in a class of cubic polynomial system 一类平面三次多项式系统的赤道极限环分支
- Stability and Bifurcation of Limit Cycles of the Equator in a Class of Septic Polynomial Systems 一类平面七次多项式系统赤道环的稳定性与极限环分支
- bifurcation of limit cycles 极限环分支
- Instability shows itself frequently in the form of limit cycles. （非线性系统）的不稳定性通常表现为极限环的形式。
- Singular Point Quantities and Bifurcations of Limit Cycles for a Class of Quintic Polynomial Systems 一类五次多项式系统的奇点量与极限环分支
- bifurcation of limit cycle 极限环分支
- An exploited predatory-prey system is discussed.The conclusions about nonexistence,existence and uniqueness of limit cycles are obtained by using qualitative and bifurcation methods.The significance of the conclusions are interpreted at the same time. 讨论了一类食饵种群被开发的两种群捕食系统.;运用定性分析和分支方法给出了该系统极限环的不存在性、存在性和惟一性等结论;并对相应的生态学意义作了说明
- Distribution of limit cycles for a class of higher-degree degenerate planar polynomial systems of codimension two is discussed. 摘要讨论了一类余维2的高次退化平面多项式系统的极限环分布，证明了此系统至多存在3个极限环。
- Then by using Poincare-Bendixson theorem sufficient conditions for the existence of limit cycles are obtained. 在此基础上，利用微分方程的环域定理获得了所述系统存在极限环的条件。
- As far as the number of limit cycles bifurcated from 3 fine focal points of quartic system is concerned, the result is good. 就三个不同细焦点分枝出极限环的结论来说，该结果是好的。
- Xianfeng Chen and Zhizhen Qian, Uniqueness of limit cycles of some high degree polynomial systems, Journal of Shanghai JiaoTong University, Supp. I (1998), 16--20 (in Chinese). 陈贤峰，一类带高次自反馈非线性控制系统的镇定性，上海交大学报;(7)35(2001);1097--1099.
- The algorithm revises the reinforcement signal and improves the exploration policy to overcome the negative effect of limit cycles in the inverted pendulum system. 算法采用修正强化信号和改进探索策略的方法克服极限环对倒立摆系统的影响。
- In this paper, the problem of limit cycle for a cubic system is studied. 摘要讨论三次系统(方程式略)的极限环问题。
- In this paper we analysis the system:and obtain the boundedness of its positive semi -- trajectory with positive initial values. Thecondition for the existence of limit cycles are obtained. 该文对一类饱和两分子反应模型进行了定性分析，得到了正初值的正半轨线的有界性和极限环存在的条件。
- Recycled materials are mostly of limited use. 再生材料大多用途有限。
