条件方程

Based on the dynamic equation, the transport and acceleration of out-flowing ionospheric ions in the magnetosphere are studied by means of finding the ion distribution function. They include two parts: the study of static ion distribution with analysis and numerical compute; the study of ion acceleration by induced electric feild in the period of dipolarization of taillike geomagnetic lines in the substorm expansion phase with the numerical simulation of the ion distribution function.

本文在磁层中上行离子的加速与传输理论研究领域中，采用动力论方程，用求解离子分布函数的方法来研究问题：(1)用解析求解和数值计算的方法，对上行离子在不同Kp指数条件下磁场位形中的定态分布进行了研究；(2)用数值模拟计算分布函数的方法，对上行离子在亚暴膨胀相磁场向偶极形驰豫过程中受磁尾的感应电场加速进行了研究。

For the question of distribution and acceleration of ionospheric ions O+,H+ and He+ in the magnetosphere, the ions static distribution function is found by solving the dynamic equation, and the up-flowing ion static distributions with various Kp indexes are investigated. The ions distribution function during the geo-magnetic dipolarization is simulated, and the upflowing ion acceleration in the magnetotail is investigated.

针对磁层中电离层离子O+、H+和He+分布与加速问题，采用动力论方程求解了离子定态分布函数，研究了不同Kp指数条件下上行离子的定态分布；模拟了磁场偶极化过程中离子分布函数随时间的变化，研究了上行离子在磁尾的加速。

In Chapter 3, by establishing a L-operator inequality and using the properties of M-matrix and stochastic analysis techniques, some sufficient conditions ensuring the exponential dissipativity in mean square of impulsive stochastic functional differential equations of Ito-type are obtained.

第三章，通过建立L-算子不等式，运用M-矩阵的理论和随机分析技巧，获得了一类脉冲随机泛函微分方程均方指数耗散的充分条件。

With the analytical method, a weak anchoring and planar alignment nematic liquid crystal cell,whose substrates have different anchoring strength, has been studied(This is named dissymmetric NLC cell).

用解析方法研究了上、下基板锚定强度不同的弱锚定沿面排列向列液晶盒，给出了指向矢倾角θ满足的方程和边界条件，讨论了它的解，导出Freedericksz转变的阈值场强和饱和场强。

This paper discusses the structure and algorithm of dynamic neural network, and use this dynamic network to predict the response of Duffing equation and a real structure in different input conditions.

讨论了动态神经网络结构及其算法，然后利用所设计的动态神经网络对杜芬方程和一实际结构在不同输入条件下的响应进行预测。

With the similarity between electromagnetical fields and structural mechanics, the electronic E and magnetic H are considered as two duality variables. With the variational principle, the system is introduced into symplectic geometry of Hamiltonian duality equations.

根据电磁场问题与结构力学的类比关系，把电场量E和磁场量H作为二类变量，通过变分原理寻求一般条件下的解法，将体系导入Hamilton对偶方程的辛几何形式，给出了电磁波导的Hamilton辛体系，并给出了辛本征值问题的表达形式。

The critical point, in the whole process, is to confirm the boundary conditions of each domain(we can use the difference method and the finitude element method to solve equation).

整个过程中，关键是边界条件的确定(方程的求解已有差分、有限元等方法)。

Considering the limits of RDSS in active positioning mode,such as poor security,limited capacity,and inability to continuously provide position,velocity and attitude outputs,a technique of tightly coupled RDSS /SINS integrated navigation system is proposed for land vehicles by utilizing the time differenced carrier phase of 3 geostatic satellites.

针对北斗系统有源定位方式保密性差、用户数目有限，不能提供连续的位置、速度、姿态信息的问题，提出利用北斗系统3颗地球静止卫星的载波相位时间差分信息，与车载捷联惯导构成紧组合导航系统，通过扩展卡尔曼滤波器估计并修正惯导系统的速度误差；引入载体的侧向和天向速度约束，改善了速度估计精度；结合北斗系统的伪距信息，消除了长航时条件下位置误差的积累；推导了滤波器观测方程，对组合导航滤波器进行了设计；通过车载实验进行了验证，实验结果表明，速度误差和位置误差的积累受到了有效地抑制，精度满足陆地战车导航的要求。

The result showed that , under the condition of experimentation , the relationship between the dry matter accumulation in aerial parts and hypogeal and the available accumulation temperature met the Logistic equation or met basically.

结果表明，在供试条件下，怀地黄植株地上部干物质（Wt1）以及地下部干物质（Wt2）的增长动态与有效积温的关系符合或基本符合Logistic 方程所描述的曲线，Wt1 和 Wt2 增长盛期的转捩点所对应的有效积温值范围是：981.6~1745.0℃和1655.4~2381.0℃，最大瞬时增长速率分别为 0.01862 g/和0.05976 g/，分别出现在有效积温达1363.31 ℃和2018.22 ℃之时

In this paper, based on the data of flume experiments and field engineering, the indicial method of dimensional analysis is compared with the method based on energy equation. the characteristics of the two methods are analyzed and the application conditions are put forward. this research can provide evidence for method selection of radial gates hydraulic calculation or calibration.

通过弧形闸门的实验室水槽数据和现场观测数据，将传统的基于能量方程的方法和量纲分析的表征方法进行了比较，在分析了不同方法的特点的同时，指出不同方法的应用条件，为闸门水力计算和校准等计算方法的选择提供了依据。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。