second order theory

Based on the theory of differential equations, the authors assume that energy flows on first and second order processes, then establish and analyse the compartment model.

以微分方程理论为基础，假设能量按一级和二级动力学过程流动，建立了生态网络中的能量流动分室模型并进行了分析。

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Based on Lie group theory, the integrability of second order, third order and n-th order autonomous system is studied.

本文基于李（Lie）群理论研究了二阶、三阶和n阶自治系统的可积性。

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The theory on the implicit TVD schemes of second order time accuracy that is preferred in solving unsteady problems has been an open question for a long time.

用于非定常问题的时间二阶精度的隐式TVD格式的理论多年来一直是个空白。

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Based on the effect of the polarization state of polarized light and the degree of polarization on the second-order correlation function, the influence of light polarization on the visibility and SNR of correlated imaging with thermal light is investigated by use of statistical optics theory.

根据完全偏振光的不同偏振态和部分偏振光的不同偏振度对二阶关联函数的影响，利用统计光学理论研究了光的不同偏振性质对热光关联成像的可见度和信噪比的影响。

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Theory of stability of the differential equation was divided one-order differential equations of stationary point and stability and the second order differential equations of stationary point and stability, respectively.

微分方程稳定性理论又分为一阶微分方程的平衡点及稳定性，以及二阶微分方程的平衡点及稳定性。

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HP nonlinear guidance law is presented based on the second-order sliding mode control theory, considering the kinematics of interception and the uncertainty of target acceleration.

在建立了目标和拦截器的三维制导模型基础上，采用全局二阶滑模控制理论设计了二阶滑模HP非线性制导律。

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V type three-level symmetric second-order coherence theory of attosecond polarization beats

阿秒极化拍的V型三能级对称二阶相干理论

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The second order modal resonance phenomena is researched and its effect on dynamics and stability of power systems is analyzed using the normal forms theory of vector fields in this paper.

应用向量场正则形理论对电力系统2阶模态谐振现象进行了研究，并对发生2阶谐振时系统动态特性和稳定性所受到的影响进行了分析。

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Second order item is omitted in Levenberg-Marquardt algorithm based on optimal theory.

基于优化理论的Levenberg -Marquardt 算法忽略了二阶项.

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By using of the new comparison principle and the order theory, the author investigates the existence of maximal and minimal solutions of terminal value problems for second order nonlinear integro-differential equation in Banach space, obtains the new results.

利用新的比较定理和半序理论，研究Banach空间二阶非线性积分-微分方程终值问题最小解和最大解的存在性，获得了新的结果。

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