positive energy balance

In this paper,We study positive equilibrium kind of n-species food chain model under pollutde environment.

本文研究了污染环境中n阶食物链系统的正平衡点问题,得到了该系统存在唯一正平衡点的充要条件,并且在n=2和n=3时证明了正平衡点的稳定性。

New sufficient conditions for the global attractivity of the positive equilibrium of equation is obtained, which improve some recent results in literature.

讨论平方Logistic差分方程xn + 1-xn=rnxn(1 +bxn -kn-cx2 n -kn) ,n =0 ,1 ,… ,其中 {rn}是非负实数列 ,{kn}是非负整数列 ,{n -kn}非单调递减 ,且limn→∞(n -kn) =∞ ,b∈ (-∞ ,∞ ) ,c∈ (0 ,+∞ ) ,给出了保证方程每一正解趋于正平衡点的充分条件 ,所得定理推广和改进了已有结果。

The results obtained prove that a locally stable positive equilibrium point also contains global stability.

考虑了n维Lotka Volterra捕食被捕食链型系统 ,证明了正平衡点的局部稳定性蕴含了全局稳定

Global stability of a positive equilibrium point on two-species competition model

两种群竞争模型正平衡点的全局稳定性

Stability in the large of positive equilibrium point is obtained.

用化学动力学的理论建立了一个二次自催化反应的数学模型，并用定性理论对模型作了定性分析，得到了该模型的正平衡点的全局稳定性的结果。

The local progressive stability around the positive equilibrium point M is discussed by using characteristic value law,and a necessary and sufficient condition is gained.

研究了3种群相互作用构成的群落的Volterra模型,利用特征值法讨论正平衡点M的局部渐进稳定性,得到一个充要条件;同时构造V函数得到M点全局稳定的充分条件。

By using the qualitative theory of differential equation and constructing Ляпунов functions,the bounded of time-delay and sufficient condition that guarantees positive equilibrium of system asymptotic stable are obtained.

采用Ляпунов函数方法,证明病毒感染的时滞免疫反应动力学模型dT/dt=γ-dT(t)-kT(t)V(t)dI/dt=kT(t)V(t)-δI(t)dV/dt=pI(t)-cV(t)的正平衡解稳定性,给出时滞的估计,证明时滞免疫反应系统的正平衡解渐近稳定和全时滞稳定条件。

An example is given on the new 300MW air cooling unit,which is studied by using a positive balance and counter-balance methods respectively,the characteristics and calculation results for the methods are compared to demonstrate that equivalent heat drop has an greatly advantage in increasing unit s performance and conducting local energy loss analysis,and raising energy saving measures.

以新型300MW空冷机组为例,分别使用正平衡、反平衡及等效热降方法对机组进行分析,这几种方法的特点和计算结果对比表明,等效热降法在机组性能及局部进行能损分析,提供节能改造手段等方面具有明显的优势。

Taking 50MW unit for example, this paper introduces the calculation methods used for analyzing the unit economy, including methods of positive balance, anti-balance, equivalent heat drop and regular thermodynamic test, and also compares the features of these calculation methods as well as their inner relations.

　以某电厂50MW机组为例,介绍了正平衡、反平衡、等效热降、常规热力试验在分析机组经济性时计算方法,比较了这几种方法的特点和内在联系。

The positive and reverse energy balance analysis of gas turbine simple cycle;

燃气透平简单循环的正反平衡分析

Global stability of a positive equilibrium point on two-species competition model

两种群竞争模型正平衡点的全局稳定性

Necessary and sufficient conditions for the existence of globally stable positive equilibrium points of n-dimensional Lotka-Volterra circle systems

一类n维环型Lotka-Volterra系统正平衡点全局渐近稳定的充要条件(英文)

ii) the positive equilibrium points of this system is global asymptotically stable if and only if-A∈P.

ii)系统的正平衡点全局渐近稳定的充要条件是-A∈P.

The Stability and Global Hopf Bifurcation of Classes of Delay Differential Systems;

两类时滞微分系统正平衡点的稳定性与全局Hopf分支

The Perturbation Solution of Multi-molecular Model of Biochemistry Reaction at the Positive Equilibrium Points

多分子生化反应模型在正平衡点的二阶近似摄动解

The paper is regarding a fourth-order rational difference equation, proving that the positive equilibrium point of the equation is globally asymptotically stable.

研究了一个四阶有理差分方程,证明了该方程的正平衡点是全局渐近稳定的.

In this paper, a stage-structured predator-prey model is studied. Sufficient conditions for the globally asymptotical stability of positive equilibrium are established.

文章研究了具有年龄结构和时滞的捕食-食饵模型,建立了正平衡点全局稳定的充分条件.

breakeven point

盈亏平衡点, 平均转效点

But I am trying to find a balance between insistence and compromise.

我正努力在执着与妥协之间找到平衡点。

Just as I was about to take a sip of coffee the whole building jolted upwards and nearly knocked me off balance.

正当我要嘬口咖啡时，突然整个建筑向上晃动起来，我差点失去平衡。

The Conflict and Balance between Lawsuit Efficiency and Justice-Legal Principles of the "System of Selecting Policemen" and Analysis of Relevant Cases;

诉讼效率与公正的冲突及衡平——“点选警察制”的法理与实证分析

Distinguish tri-port sinusoidal oscillator phasic balance by reactance line

基于电抗性质线判定三点式正弦波振荡器的相位平衡

equilibrium point algorithm for computing

计算中的平衡点算法

marked by balance or equilibrium and readiness for action.

以平衡、均衡并且准备好了行动为特点。

” It holds that balance and gradual change is normal, whereas imbalance is abnormal.

认为平衡、变是正常的，不平衡则是反常的。

Sometimes it sounds a little stubborn but I am now trying to find a balance between insistence and compromise.

有时候，这显得有点固执，因此，我正努力在执著与妥协之间寻找平衡点。

On Conflict and Balance between Conflict Justice and Material Justice;

冲突正义与实质正义间的冲突及衡平

Balance of Conflict between General Justiceand Specific Justice by Law;

普遍正义与个别正义冲突的法律衡平