变量

At the same time it is know by analysis about matrix characteristic of the similar orthogonally that not only the characteristic value after the transformation is equal to the ones before the transformation and they are independence to time variable of the system, but also the eigenvectors of the formed system can showed the effect of the time variable on original system.

同时，根据矩阵正交相似的性质分析得知：不仅变换前后两个矩阵的特征值完全相同并与时间变量无关，而且时间变量对此系统的影响可以只由变换后系统的特征向量来描述，给出了非典型阻尼振动系统物理意义上的解释。

The HFE cryptosystem presented by Jacques Patarin in 1996 has long been regarded as the most promising one of multivariate cryptosystems,and is a promising public key cryptosystem with many practical applications:very fast or very short digital signatures,fast public key encryption,etc.

多变量密码系统设计与分析是近年来密码学研究领域中的一个非常活跃的研究方向，其中基于有限域上多变量二次方程组的求解问题设计密码系统并对其进行分析是这一方向的一个重要内容。

The damage represents complex mechanism. In this research based on T300/HT3 laminate structure, fatigue life is predicted phenomenologically, dealing mainly with in-plane stresses without accounting for out-of-plane failures such as craze. Fatigue modulus, based on damage mechanics, is used as a physical parameter which helps to describe the basic fatigue behaviors of unidirectional laminates and obtain expressions for cumulative damages defined by strains and stress. Based on some typical fatigue test data for unidirectional composite laminates, residual modulus sequence is found out.

本文以T300/HT3复合材料层压结构为研究对象，从唯象的观点出发，以损伤力学为基础构造损伤函数，考虑了剩余刚度和应变比率对复合材料的疲劳性能的影响，以这些变化着的机械性能作为损伤变量，建立了复合材料的疲劳损伤模型，基于层压板拉—拉疲劳试验数据，拟合出损伤模型中的参数，从而得到层压板拉—拉疲劳损伤变化规律，并建立损伤变量与内部损伤及疲劳寿命的联系，从而预测常幅应力作用下疲劳寿命。

For the process of synthesizing of Phosphonic Acid Dimethyl, the significance of application of MSPC on it is discussed, the parameters and original data are deduced and estimated, and process monitoring and diagnostic simulation are given based on simplified model.

对于亚磷酸二甲酯生产过程，论述了对其进行多变量统计过程控制的意义，对该生产过程的物性参数和初始数据进行了推导和估计，并在经过简化的生产控制模型基础上进行了多变量统计过程监控和诊断仿真。

Both batch and column variants of SPE can be used for preconcentration purposes.

固相萃取的分配变量和圆柱变量都可以用于预浓缩的用途。

The adjusted relative risk (95% confidence interval ) of MI associated with each standard deviation increase in anxiety variable was 1.37 (95% CI 1.12 to 1.68) for psychasthenia, 1.31 (95% CI 1.05 to 1.63) for social introversion, 1.36 (95% CI 1.10 to 1.68) for phobia, 1.42 (95% CI 1.14 to 1.76) for manifest anxiety, and 1.43 (95% CI 1.17 to 1.75) for overall anxiety. These relationships remained significant after further adjusting for health behaviors (drinking, smoking, and caloric intake), medications for hypertension, high cholesterol, and diabetes during follow-up and additional psychologic variables (depression, type A behavior, hostility, anger, and negative emotion).

心梗相关的焦虑变量升高的标准差校正的相对危险度为1.37(95%可信区间1.12到1.68)，这些联系在进一步校正健康习惯饮酒、抽烟和热量摄入）后，随访期间治疗高血压、高胆固醇、糖尿病和其他心理变量（抑郁、A型行为、敌意、愤怒和消极情绪）后变得更显著。

The ramose input of RDRNN deals with the different response affection of e ach kind of input.In the hidden layer,each , neural unit recurrent itself dynamically .The learning and training procedure of , the RDRNN is very efficient for its ramo se input and recurrent frame.

该模型针对结构控制中结构状态变量、控制变量和外激励荷载对结构的响应有不同的影响，采用分支输入递归处理，不但结构响应预测精度好，而且大大提高了动态网络的学习和训练效率。

The invention relates to a dynamic matrix control system of high-purity distillation, which comprises distillation tower, intelligent checker, DCS system, superior host, and on-site bus, while they are connected. The control system uses tower product group as the object variable, and the reflux ratio and reboil ratio as control variable; the superior receives history temperature and pressure data from the DCS real-time database, via the predict control and dynamic matrix controller, to obtain the output values of present controller as reflux ratio and reboil ratio, then feedback said two values to DCS system, to function the distillation object. The invention can confirm the high-purity stable operation, with better dynamical control.

本发明公开了一种高纯精馏的动态矩阵控制系统和方法；系统包括：精馏塔、智能检测仪表、DCS系统、上位机和现场总线；所述精馏塔、智能检测仪表、DCS系统和上位机通过现场总线依次相连，实现信息流的上传和下达；本发明所涉及的控制系统采用塔双端产品组分为被控变量，回流比和再沸比为对应的控制变量；上位机从DCS实时数据库中获得历史的温度、压力等数据，通过推断控制环节和动态矩阵控制器环节，得到当前控制器的输出值-回流比和再沸比，再把控制器输出值返回给DCS系统，实现了对高纯精馏过程的双端产品高纯控制，对双端组分的高纯度平稳操作，具有很好的动态品质和控制效果。

The scan time is constrained by the time that it takes to recompute the flow, based on changed input and state variables, and to register its effects on state and output variables.

当它采取对重新计算流程的时候，扫瞄时间被压抑，基于被改变的输入和状态变量，并且登记它的作用对状态和输出变量。

Based on the yearly investigation to permanent plots of the 4 10 years old stands, the mean height and DBH of the stands were made as benchmark variables, and main silvicultural techniques and ages of the stands were made as explanatory variables, quantitative regression models of predicting growth of Masson pine plantation were established.

该文利用贵州省台江县马尾松造林技术试验林4～10年生林分的逐年测定资料，以林分平均树高和平均胸径为基准变量、各主要造林技术措施和林分年龄为说明变量，对建立马尾松林分生长的数量化回归模型进行初步研究。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。