系统函数

A concept of partial derivative called pseudo-partial-derivative is used to dynamically linearize a nonlinear system, and an aggregation method is applied to deal with the future predictive PPD.

基于pseudo-partial-derivative的概念动态线性化非线性系统，利用集结方法处理未来预测时刻的PPD，实现了非线性系统的自适应预测函数控制。

In the study of the nonlinear dynamics, Melnikov function is widely used as a criterion to check whether subharmonic or ultra-subharmonic bifurcation even chaos will occur in a perturbed Hamilton system.

在非线性动力系统的研究中， Melnikov函数被广泛地用来作为微扰哈密顿系统是否发生次谐或超次谐分岔乃至混沌的判据。

This paper, using complex function theory,proves the general conclusion that the systemmust be robust stable if its perturbed system is robust diagonal dominance .

本文用复变函数理论，证明了摄动系统为鲁棒对角优势，则系统一定是鲁棒稳定这个一般性结论。

The systems mentioned above can hardly be analyzed by the"Phase Plane"method or the"describing function"method.

这种系统很难用非线性控制系统的"相平面法"或"描述函数法"等进行分析。

The concept of entropy is brought forward by the Germanic physical scientist Clausius in 1865. Entropy theory is the thermodynamics second law.

熵是物理学中一个衡量系统混乱程度的物理量，同时也是表征系统演变方向的状态函数。

For the problem that the suppression of co-channel interference and suppression of noise can't be balanced in signal-to-jamming and noise ratio maximization method for the linear precoding of multiuser multiple-input multiple-output downlink systems, an improved scheme that the term of noise variance is modified as a piecewise linear function is proposed, in which the balance between suppression of co-channel interference and suppression of noise can still be maintained even when the noise variance is a small value through piecewise modifying the term of noise variance, and thus the bit error rate and capacity of the systems are further improved.

针对多用户多输入多输出系统下行链路线性预编码的信干噪比最大化方法中，共信道干扰抑制和噪声抑制不能有效平衡的问题，提出将其中的噪声方差项修正为以噪声方差为变量的分段线性函数的改进方案。该方案通过对噪声方差项的分段修正，在噪声方差的值较小时依然能够保持共信道干扰抑制和噪声抑制间的平衡，从而使系统的误比特率性能和容量得到进一步提高。

One kind of such information is the geometry about an object in the space. The algorithm to extract such a kind of information usually includes an important procedure called "camera calibration." The purpose of camera calibration is to construct the relationship between the image plane of the camera and the coordinates system of the object space. The relationship is usually represented by a "mathematical function."

此类应用之演算法则中一般包含一重要之程序称为"摄影机校准"，其目的是在建立影像平面与物体空间座标系统间之对应关系，此对应关系以"数学函数"表示，并在校准后得到一组参数，用以代表此摄影机在物体空间座标系统中之"特性"表现。

The effects of the linear birefringence and incident polarizing angle upon the performance of a bulk glass optical current sensor are derived and analyzed, a modulation formula to describe the influences of the linear birefringence to the output signal of the sensor is given.The effect of the incident polarizing angle upon the performance of the system and the condition to determine if or not it can exert the influence are also given.

对线性双折射及入射起偏角对光学玻璃电流传感器输出特性的影响进行了理论推导与分析，给出了光学玻璃电流传感器在非理想状态下线性双折射对输出电压的调制函数的数学表达式，并给出了入射起偏角对系统影响的数学表达式及其对系统有无影响的条件。

The results show that the linear birefringence will modulate the scale factor of the system with a Sa function, it can also affect the extent of the influence of the incident polarizing angle, taking －sin2;(δ/2) as the influence factor, at the same time. When the incident polarizing angle has some special values such as 0,45, or 90 degree, the effect to the system will be zero.

结果表明，线性双折射会以Sa函数的形式调制理想光学玻璃电流传感器输出信号的尺度因子，同时以－sin2(δ／2)为影响因子决定入射起偏角对系统影响的大小；当入射起偏角取某些特殊值时其对系统的影响为零。

If a capacitance system consists of the measured pressboard and a capacitive sensor,the outputs of the system are effected by dielectric characters of measured pressboard.

如果将被测绝缘纸板和测量传感器看成一个电容系统，则绝缘纸板的介电性能直接影响系统的输出，而绝缘纸板的复介电常数又是其内部微量水分的函数，通过测量绝缘纸板的复介电常数，根据水分及温度对其的影响关系可以判断被测绝缘纸板的水分含量。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。