一阶

Research on complex signal identification under low signal/noise rate based on high-order cumulant is put forward based on this idea.

本文对低信噪比情况下基于高阶累积量的复杂信号识别研究正是在这一基础上提出来的。

A method for detecting feature of signal embedded in additive noise is presented,which based on third-order cumulant diagonal slice .

提出了一种基于三阶累积量对角切片的特征检测方法。

Under the Republic there was a fixed pattern of office holding called the cursus honorum ("course of offices").

在共和时代，元老们有着一种固定的担任官职的模式，被称为 cursus honorum， course of offices，汉语可以译成"担任官职的顺序，仕途进阶"。

the paper introduces long curtate new unequal ofdm system.adopts long curtate unequal benefit to be not to require that the second order adding the circulation prefix,being therefore likely to lead into period stationarity,making use of signal therefore in launching an array,counting characteristic property realizing blind estimation of route.this technology includes three kinds of method : subspace decomposition,correlation matching,and maximum likeewise,monte carlo simulation show that whentheeb/no is low,function is better than the other kinds of method.

摘 要：提出一种采用不等长分组新的ofdm系统。采用不等长分组的好处是不需要加循环前缀就能在发射序列中引入周期平稳性，因此，可利用信号的二阶统计特性实现信道盲估计。信道盲估计主要分子空间分解、相关拟合和最大似然三种方法。结合monte carlo仿真表明，在信噪比较低时，结合子空间分解方法计算出的误码性能比其余两种方法好。

A closed calculation form of the curvature is given based on the theory of matrix.(7)A case study of high slope reinforcement is presented. The whole process of the uplift test and the computer simulation of cable are expatiated. The excavation of the slope with or without reinforcement is simulated by numerical method.

利用矩阵理论给出了求解曲率的简化算式，提出了一种相关变量可靠度计算的实用二次二阶矩法；(7)借助某高边坡支护工程，详述了锚索极限抗拔试验和数值模拟。

The interpolation algorithm of introduced error compensation for complex parametric curve in space is proposed for the high precision interpolation of parametric curve on the basis of studying the first, second order taylor expression parametric curve interpolation algorithm and the plane parametric curves interpolation algorithm.

以一、二阶泰勒展开式参数曲线插补算法和平面参数曲线插补算法研究为基础，提出引入误差补偿值的复杂空间参数曲线高精度插补算法以实现空间曲线的高精度插补。

In this paper, a cut-and-try way is braught forward to diagnosetransmission faults on transmission performance test-bed with thesetheories: order analysis and expert system.

本文是应用阶次分析及专家系统理论在变速器性能试验台上做变速器故障诊断的一次尝试。

A spectrum sensing method based on the high order cyclic statistic in cognitive radio was presented according to the strict cyclostationarity of the HOCS.

根据高阶循环统计量具有的严格平稳特性，提出了一种基于HOCS的频谱感知方法。

Firstly,driving forces equations of each driving pair of the whole mechanism are established by combining D'Alembert Principle with virtual displacement Principle.

然后利用虚设机构法建立机构中各杆件的速度、加速度的一、二阶影响系数矩阵，从而解决了少自由度关联机构惯性力求解中各杆件的速度和加速度难以求解的问题。

The governing equations of laminate-faced sandwich cylindrical shallow shells based on the first-order shear theory with large deflection are high-order partial differential equations. Four dependent functions are involved.

大挠度剪切理论下复合材料夹层圆柱扁壳的稳定性控制方程是一组非线性高阶常系数偏微分方程，其中包含四个独立的函数，它们分别为横向挠度w、参考曲面的法线转角Φx、Φy和应力函数F。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。