查询词典 singularities

By means of singularities theory,four kinds of transition set s and diagrams of codimension five are acquired.

应用奇异性理论分析方法对系统主参数共振的分岔方程进行了奇异性分析，得到了余维5四种不同情况的转迁集与分岔图。

Under this situation, sparse signal expansion theories, a kind of new multiscale analysis theory that has been developed in recent years, possess a better performance in detecting the singularities of the signal with straight line or curve in high dimensional space and can be used to express signals with sparse coefficients.

而稀疏信号表示理论是近几年发展起来的一类新的多尺度分析方法，它们对高维空间中具有直线或曲线奇异性信号具有良好的检测性能，可以用稀疏的系数来表示原信号。

The dark lines are consequences of destructive interference of the transitions and singularities of the radiation field's DOS.

暗线是由于辐射场态密度的奇点及跃迁时量子相消的结果。

Using the language of differential geometry, this paper provides a fine classification of singularities of general parallel robots.

采用微分几何方法，提出一种针对一般并联机器人的奇异性的分类方法。

Based on theanalysis of topology structure of parallel mechanisms and using differential topology anddifferential manifolds as mathematical tools, we propose a new classification method. Thismethod classifies singularities of parallel mechanisms into two basic types, i.e. topologysingularity and parameterization singularity. This kind of classification has clear physical andmathematical meaning and fully reveals the characteristic of configuration space of parallelmechanisms.

采用微分拓扑和微分流形等现代数学工具，在对并联机构位形空间的拓扑结构进行分析的基础上，提出了一种新的奇异位形的分类方法，即把奇异位形分为拓扑奇异位形、参数化奇异位形两种类型，这种分类方法充分体现了并联机构位形空间的特点，具有十分明确的物理和数学意义。

The paper considers the Dugdale model in elasto-plastic fracture mechanics, and smoothness of the wedge profile, which suppress the stress singularities both at the edges of contact and at the sharp corners. The approach avoids the self-consistent numerical calculations for the real material potential.

研究中运用弹塑性断裂力学中的Dugdalc模型和对冲头尖角的连续化处理，消除了接触区边缘及尖角处的应力奇异性，并避开了自洽问题数值求解的困难，得到了完整的理论公式。

There exists a transcendental entire function〓suchthat f has a Baker domain U which contains infinitely many singularities of〓.

定理3.1设f是一个具有有穷个极点的超越亚纯函数，则f的每一个多连通Baker域循环一定含有〓的奇异点。

The type of essential singularity belonging to one of three classes of isolated singularities, is only regarded as a type of infinite-order polar points.

剖析了数学奇点和物理奇点这两个概念及其它们在本质上的差异：数学上的本性奇点只不过是无穷级极点。

A composite fault detection method based on signal singularities detected by wavelet analysis is presented.

提出了利用小波分析技术进行信号奇异性检测的多重并发故障检测方法。

This paper provides the analytic method to calculate the value of Green"s functions in space domain at the zero distance by the discrete complex image theory,that is ,to express the finite progressional sum of Green"s functions detained with DCIT into Taylor expansion and deduce the analytic expression of the singularities at the zero distance with the help of the specific subdomain base functions.

对此，本文在讨论采用离散复镜象理论计算空间域Green函数时，提出了采用该镜象理论计算空间域Green函数零距离处奇异值的解析方法，即，采用Taylor公式展开镜象理论得到的空间域Green函数的有限级数和形式，并结合特定的分域基函数来得到零距离处Green函数奇异值的解析计算式进行计算。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。