查询词典 discrete

Then for discrete time single-input single-output system,a theorem of Hankel-norm approximation is proposed and proved.

相反，有限脉冲响应滤波器可以得到严格的线性相位，但是要获得一定的选择性则信号时延较大。

In this chapter, the existence and uniqueness of the solution to the scheme, the convergence and stability to the scheme are proved by using discrete functional analysis theory, the apriority estimate method and the Brouwer fixed-point theory.

在本章中，运用离散泛函分析理论，结合先验估计、Brouwer不动点原理证明了相应差分格式解的存在唯一性、收敛性和稳定性。

E. On the basis of drawing up the discrete rod element, the preprocessor procedure forming the element formation of arbitrary orientation rock bolt is worked out.

e。在编制离散式杆单元的基础上，编制了生成任意岩体锚杆单元信息的前处理程序，从而克服了常规的有限元算法中必须将锚杆布置于单元结点的常规做法。

Finite Element Method is an important means of engineering subject and has been proved to be a common method in many subjects. However, disadvantages still remained. During the structural analysis, large amount of high-order units were used in order to ensure the precision of arithmetic solution when using Finite Element Method to do discrete processing. This will cause high order of coefficient matrix of corresponding equation group.

有限元方法是工程学科的重要工具，被证明为在许多科学和工程领域中连续物理系统模拟的一种普遍方法，但缺点是随着工程结构分析问题越来越复杂，在结构分析中，为保证数值解的精度，在使用有限元方法离散处理时，往往要用大量的高阶单元将结构剖分得很密，这时相应的代数方程组的系数矩阵的阶数很高，即使用目前速度最快的串行机来进行求解，费时仍然太多且问题的规模受到内存容量的限制。

State equations of the BPMSM and speed estimation discrete arithmetic based on EKF were established.

建立了无轴承永磁同步电机状态方程及扩展卡尔曼滤波器速度估计离散算法。

There are no discrete historic and physical findings pathognomonic for lumbar facet arthropathy.

小关节疾病并无特殊单独的病史及体征。

Numerous studies have attempted to delineate a discrete set of historic and physical findings pathognomonicor at least suggestive of lumbar facet arthropathy.

大量研究试图通过研究以往资料及体征的特点来描述此病的特点，至少可以对腰椎小关节病的诊断有所提示。

Main Courses: Circuit, Electronic Technology, Discrete Mathematics, Data Structures, Compile Principle, Programming, Computer Principle and Structure, Operation System, Assembler Language, Database Principle, Computer Network and Internet, Software Engineering, Calculating Designing and Analysis

主要课程：电路，电子技术，离散数学，数据结构，编译原理，程序设计，计算机组成与结构，操作系统，汇编语言，数据库原理，计算机网络，软件工程，算法设计与分析。

As a result, the randoFractal texture produces randomly generated colors, but those colors are associated with the surface according to discrete chunks, rather than individual pixels.

作为一个结果，randoFractal 纹理随机产生一个颜色，依靠离散的大块，那些颜色是和表面是有关联的，相当于个别的象素。

We introduce the general sigma point selection framework, and give two kinds of efficient methods: a reducing the computing complexity by decreasing the number of the sigma point; b scaling the sigma points to influence the effects of the higher order moments, then improve the accuracy of the UT; c Convergence analysis of the UKF, when used as an observer for nonlinear deterministic discrete-time system, is presented. Based on the UKF that captures the posterior mean and covariance accurately to the second or third order term (in terms of Taylor series expansion) for any form of nonlinearity, sufficient conditions to ensure local asymptotic convergence are established.

论文介绍了sigma点的一般选取规则，并给出了两种有效的方法：a通过减少sigma点集合的元素的数目来减少计算复杂度，b通过增加参数来逼近泰勒展开的高阶项，从而提高UT变换的精度；c论文研究了UKF算法应用于非线性确定性离散时间系统时的收敛性问题。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。