The law dictates that no donor can produce more than ten live births, and most clinics limit donation to three cycles.
法律规定，任何捐助者不可以制造出超过10个活的婴儿，大多数诊所限制捐赠三个周期。
In this paper the zero-input stability of second-order digital filters with a rounding quantizer has been analyzed by the properties of limit cycles.
本文根据极限环特性对单舍入量化器二阶数字滤波器的零输入稳定性进行了分析。
At the same time, the center conditions and bifurcation of limit cycles at the origin of the quintic polynomial system are also investigated.
同时还研究了一类五次系统原点的中心条件及在同步扰动下原点与无穷远点的极限环分支问题。
The existence and uniqueness of limit cycles of a biochemical system is proved.
本文研究一类生化系统的极限环的存在性与唯一性；
To efficiently remove the limit cycles in dark region of an error-diffused halftone image, an inverse halftoning algorithm based on human visual system is proposed.
针对误差分散半调图在黑灰区域的“有界循环”现象，提出了一种基于人眼视觉系统的逆半调算法。
The global stability problem of limit cycles for decentralized relay feedback systems is studied.
研究了分散继电反馈系统极限环的全局稳定性问题。
The main aim of this dissertation is to study the exist of limit cycles of plane nonlinear dynamic system of high degree and the number and the configurations of limit cycles.
本文研究了平面多项式向量场的全局与局部分叉，旨在研究高次平面非线性动力系统多极限环的存在性以及极限环的个数及其相对位置关系；
Studied in this paper are center conditions and bifurcation of limit cycles from the equator for a class of cubic polynomial system.
本文研究了一类三次系统无穷远点的中心条件与赤道极限环分枝问题。
The maximum length of limit cycles for fuzzy bidirectional associative memories ( FBAM ) is studied in this paper.
本文主要研究了模糊双向联想记忆网络的最大极限环长度。
The bifurcations of limit cycles which have important theory values and apply values are generally acknowledged as the hot areas of the research work.
就平面向量场的分叉理论而言，极限环分叉的研究已成为人们关注的热点，具有极其重要的理论价值和实际应用价值。
The conditions for the existence of periodical solutions, and the estimation of the perimeter and relative position of the limit cycles are obtained.
证明了周期解的存在条件，并估计了有关极限环的周长和相对位置。
This paper is devoted to the qualitative analysis of a differential system for three molecular saturated reaction. The conditions for the existence and nonexistence of limit cycles are obtained.
采用定性分析的方法，讨论了某类三分子饱和反应系统的极限环存在和不存在的条件。
The stabilities of the equilibrium points and limit cycles in different regions of two parameter plane are studied.
在两个参数平面上研究了系统在余维二分叉点附近的不同区域内平衡点和极限环的稳定性及其个数。
The existence and uniqueness of limit cycles are discussed, and the equation of bifurcation surfaces is obtained.
对一个自催化反应振动模型作了全局分析，讨论了其极限环的存在与唯一性，给出了其分枝曲面方。
We discuss issues of limit cycles' existence about system I. Based on the system I, we construct a new outer boundary line, get Theorem a.
主要讨论系统I极限环存在性相关的问题，文中通过对系统I构造新的外境界线，得到定理a。
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 an example, we demonstrate the application of delayed feedback network for storing limit cycles which have common intersection points, the network recalls the whole number series by a part of it.
作为应用例子，我们演示了用延迟反馈网络存储具有交叉点的多个极限环，从一小串数字中联想起整个数字序列。
Based on the data of the death rate of population in a district of Wuhan and that of Canada's leopard cat, SETAR models have been developed and the limit cycles for both cases worked out respectively.
本文根据武汉市某区人口死亡率和加拿大山猫数据建立了SETAR模型，并作出了相应系统的极限环。
In chapter 2, center condition and bifurcation of limit cycles of quasi cubic system are I.
第二章研究了一类拟三次系统的中心条件与极限环分支问题。
Aim To discusses the existence and uniqueness of limit cycles for a class of quadratic system.
目的研究一类二次微分系统的极限环存在性及唯一性。
In this paper, the problem of limit cycles bifurcated from the equator for a quintic polynomial system is investigated.
本文研究一类五次平面多项式系统赤道极限环分支问题。
It is the first time that 7 limit cycles can bifurcated from the infinity for a class of quasi quintic system.
首次证明了拟五次多项式系统在无穷远点能分支出7个极限环。
In the fifth section, we obtain some sufficient conditions under which a class of a planar quintic system has at most two limit cycles by transforming it into Abel equation.
第五章讨论了一类可化为abel方程的五次多项式系统的极限环的个数，得到此类平面五次多项式系统至多存在两个极限环的充分条件。
In this paper we employ a simpk approximate simulated system to explain that self-oscillation of oil membrane is in close relationship with limit cycles.
本文采用一个简单近似模拟系统说明油膜自激振动与极限环是密切相关的。
Conclusion The existence, unique-ness and stability on limit cycles for this system are obtained.
结果得到了此类系统极限环存在且唯一的充分条件。
Conclusion The existence, unique-ness and stability on limit cycles for this system are obtained.
结果得到了此类系统极限环存在且唯一的充分条件。
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