查询词典 sample method

In this dissertation, we develop the research work of the following three aspects based on existed work.First, using the scale-invariant property of multiscale model, i.e. Markovian among scales, a method of qth-order tree-based for multiscale representation of a class of 1-D stochastic process is presented. The multiscale stochastic model is established. The representation forms of parameter matrices, such as, the state transition matrix, the disturbance matrix, the initial state and the corresponding covariance matrix are deduced in detail. The multiscale sample paths based on distinctive order tree are presented by computer simulation.

本文在已有工作的基础上，开展了以下几个方面的研究工作： 1、根据多尺度模型尺度不变性，即利用尺度间的Markov性，给出了一类1-D随机过程基于一般q阶树的多尺度表示方法，建立了相应的多尺度动态模型，详细推导了多尺度模型中的状态转移阵、扰动阵、初始状态和相应的协方差阵，并通过计算机仿真给出了不同阶树的多尺度采样路径。

Requirement and processing method of the experimental water used in the process of Permanganate Index through analyzing the measurement result of standard sample.

简单介绍了高锰酸盐指数测定中对实验用水的要求及实验用水的处理方法，通过对七个标准样品的实验测定及讨论。

He method of microwave heating was used to determine the permanganate index of different water sample.

利用微波加热方法测定了不同水样中的高锰酸盐指数，讨论了微波功率、时间、酸度等条件对分析结果的影响，并与标准方法相对照，用t－检验法及 F－检验法检验，均没有明显差异

The instrument simultaneously sample for three phase voltage and current. Rotary photoelectric coding switch and LCD are used for human-computer interaction. it makes the interface compact and efficient. Utilizing the function of positive and negative edge trigger of the programmable counter array unit in MPU, signal zero-cross is captured for the phase detected based on double way. The software synchronism sampling method based on real-time parameter self-optimizing minishes period truncation error, and the measurement accuracy is improved. The digitization power measure imports traditional two-unit and three-unit methods and expands application range of the instrument. The capacity is discriminated by soft ware table-look-up on the load loss. The value of a quantity is converted to the value when reference temperature (75 ℃) from test temperature.

该仪器具有以下特点：仪器对三相电压电流同时采样；基于旋转式光电编码器和液晶显示屏的人机交互界面简洁而高效；可编程计数器阵列PCA"捕获"信号的过零点用于双向过零平均鉴相，得到准确的相位差和周期；基于实时参数自寻优的软件同步采样，有效地减小了周期截断误差，提高了测量准确度；数字化功率测量引入了传统的二表法和三表法，扩展了仪器的使用范围；实际容量根据负载损耗用软件查表的方法来判别；测量值已从试验温度折算到了参考温度(75℃)时的值。

Objective To develop a high sensitivity and reproducible method for rapid DNA analysis even when using picogram sample in a complex background.

目的 建立一种灵敏度高、重现性好的检测混合样品中微量目的基因的方法。

Province, Shijiazhuang, Baoding have been involved in two rounds of 61 cities nationwide survey and synthesis of MSM epidemic prevention and control work, 4-6 months of this year the third round of the survey will be carried out; the rest of the city of nine work-site investigations and Shijiazhuang, Baoding, the third round of the survey the same time, also in accordance with the national program of 61 pilot cities, the survey used a snowball method, sample size of 300 people, mainly MSM population survey of AIDS, syphilis, hepatitis C infection; Shijiazhuang, Baoding, the completion of the third round of the national survey At the same time, will also focus on the MSM population in rural areas of the outbreak investigation; in July 2009, municipalities to carry out data entry, upload, analysis and summary.

我省石家庄、保定已参与两轮全国61个城市MSM疫情调查与综合防治工作，在今年4-6月份将开展第三轮调查；其余9市的现场调查工作与石家庄、保定的第三轮调查同步进行，同样按照国家61个试点城市方案、采用滚雪球法调查，样本量均为300人份，主要调查MSM人群艾滋病、梅毒、丙肝的感染情况；石家庄、保定在完成全国第三轮调查的同时，还将侧重于农村地区的MSM人群的疫情调查；2009年7月，各市进行数据录入、上传、分析和汇总。

In the proposed method,properly spaced background sample pixels are automatically picked up from the image,and then they are used in polynomial fitting for obtaining distribution characteristic of background light.

这种方法假设同类物体具有类似的特征，在灰度图像中是亮度，在彩色图像中则为物体的颜色。

The influence of sample preparation method and detection mode on the analysis of polysaccharide was investigated.

考察了不同的样品制备方法和检测方式对植物中多糖分析的影响。

The estimation of population mean is obtained using a cluster sampling method supplementary stratified sample.

本文就是在这一宗旨下，提出一些新的抽样方案，并在理论上证明这些方案的优越性。

The estimation of population mean is obtained using a cluster sampling method with supplementary stratified sample.

针对这一缺陷，提出了一种辅以分层抽样样本的整群抽样方案，得到了总体均值的估计量，以及这一估计量的一些良好性质。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。