查询词典 sampling methods

Through the use of statistical methods of descriptive statistics, independent t-value test sampling, single factor variation analysis, Pilson differentiation correlation and gradual multi-regression, concrete conclusions are as the following

经由描述性统计、独立样本t检定、单因子变异数分析、皮尔森积差相关、逐步多元回归等统计方法加以分析后所获致之具体结论有

The main ideas are as follows. 1. To estimate instantaneous speed and angle position when angular sampling can not used, some methods have been analyzed firstly.

为此，本文分别采用计算阶比分析、广义多相干分析和径向基函数网络等方法，来解决旋转机械变速过程中的信号预处理、特征提取和烈度监测等问题。

After the analysis and comparison of the different speech signal processing methods, the continuous interleave sampling is chose to process speech signal, and wave transform is used in the CIS method.

经过对各种语音信号处理方案的分析、比较，采用连续交替采样的语音信号处理方案，并将小波变换应用到CIS语音信号处理方案中。3。

METHODS: We measured eyesight, interpupillary distance, exophthalmos and diopter of the girl students aged 18 or 19 in our school by cluster sampling.

采取整群抽样的方法，对本校18～19岁女性学生进行视力、瞳距、眼球突出度与屈光状态检查。

Based on the summarizing of the exiting algorithms of the texture mapping and antialiasing, this paper goes deeply into the basic theory and processing of texture mapping. The texture compress algorithm which can satisfy the need of the memory and time is given for the stochastic sampling in the inverse texture mapping; the geometry transformation in the texture mapping are discussed and the concepts of the unitary parametrization and the patch parametrization is proposed, some kinds of the unitary parametrization methods of parametric surfaces and the geometry transformation in the patch parametrization are also presented; in order to solve the aliasing in the parametrization of intermediate surface-sphere in two-part texture mapping, an area-preserving transformation is presented also; to improve the quality of the graph the aliasing in the texture mapping is analyzed from the aspect of signal process, and the modified summed-area tables algorithms is proposed; the distortion of the scanline conversion algorithms under perspective transformation is analyzed and the proper interpolation algorithm is presented so the aliasing problem of the polyhedral object after the unitary parametrization is efficiently solved.

本文在总结现有的纹理映射和反走样算法的基础上，深入研究了纹理映射的基本原理与过程，根据反向纹理映射对纹理随机采样的特殊要求，提出了一种可满足存储空间和寻址时间的纹理压缩存储算法；通过对纹理映射中几何变换理论的进一步深入探讨，提出了整体参数化和面片参数化的概念，并给出了参数化曲面的各种整体参数化方法和面片参数化的几何变换形式；针对现有的两步映射算法所存在的中间曲面—球面的参数化问题，提出一种等积映射方法，较好地实现了由非参数化面片拼接而成的多面体表面的纹理映射；从信号采样的角度深入分析了纹理映射中走样产生的原因，提出了改进的区域求和表算法，使图形生成的效果有所提高；还分析了一般的扫描线算法在透视变换中所存在的问题，提出了一种正确的插值算法，从而解决了整体参数化后多面体表面纹理映射的几何变形问题。

Provide a comprehensive inspection and sampling inspection methods, such as flexible, easy to grasp the macro level Cong quality data and detailed analysis of each type of error

提供全面检查和抽检等灵活检查方式，便于丛宏观上把握数据的质量情况，并能详细分析每一种错误类型

Methods A resident （≥ 5 years） group of 30 214 people aged ≥35 years in seven small towns of Liaoning province was investigated by duster multistage and mandom sampling.

目的了解北方农村地区成年人群冠心病的流行病学特征和相关危险因素，为北方农村地区冠心病的防治和干预接供科学依据。

Methods: The study sample comprised 1 573 35～44 year old and 1 515 65～74 year old Guangdong residents recruited from urban and rural areas through multi stage cluster sampling.

通过多阶段整群抽样方法从城市和农村抽取35～44 岁组1 573 人和65～74 岁组1 515 人为样本，用结构式问卷由经培训的问卷人员进行面对面问卷调查。

Methods A total of 6 352 students were chosen by multi stage randomized sampling, the information of the students aged 7-8 were collected by face to face interview, students aged 9-18 by self administered questionnaire. Results The incidence rate of injury was 48.0%, and there were 30.4% of the students reporting had committed injury. Every injury case had 1.58 injuries during one year averagely.

用4阶段分层随机整群抽样方法抽取大城市、中小城市、一类农村和二类农村各3个县区进行调查，每个县抽取1所学校，共对6 352名学生进行调查，小学一、二年级学生面对面访谈，三～六年级学生在调查员和老师的指导下完成，初、高中生自填。

Methods 18 583 subjects were randomly selected from three cities and three counties by multistage sampling method.

采用多级抽样方法，对辽宁省3市3县18 583名居民过去1 a中的伤害情况进行调查。

By the time of its fall, most of the prisoners were writers who had written against the corruptions of the government.

到它被攻陷的时候，里面多数的犯人是写了反对政府贪污文章的作家。

The most obvious variation to ovum morphological character was that the color was changed from light green to sepiaceous in embryonic development, and all the ovums were almost hatched after 96h.

在胚胎发育过程中卵的形态特征最明显的变化是颜色从淡绿到深褐色，卵在发育96h后卵基本全部孵化。