查询词典 data-base
- 与 data-base 相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Owing to the test of fatigue life,possesses a rather big difficulty and its testing data have the characteristics of strong scatterence and if a prediction is made from using grey-forecasting model GM(1,1,thus its prediction value would get a rather big error compared with the real result,This paper hereby put forward a kind of new method to simulate the test.let the data be firstly processed into logarithmic series so as to reduce the scatterence of data,and then carry out the prediction by the use of grey-forecasting model.
由于疲劳寿命试验具有难度较大,其实验数据具有分散性强的特点,如果直接用灰色预测模型(GM(1,1))作预测,其预测值与真实结果的误差较大。在此提出一种试验仿真的新方法。首先将数据处理成对数序列,以降低其数据分散性;然后再用灰色预测模型进行预测。
-
I will introduce a method to solve this problem when data come from some common life distribution, such as Weibull distribution and Lognormal distribution. In chapter 1, we introduce background of grouped data and how to analyze them with classical methods. In chapter 2, we introduce EM algorithm and show that the estimation of the parameters get through this algorithm is convergent under certain conditions. In chapter 3, we use EM algorithm to estimate parameters in Weibull distribution and Lognormal distribution by grouped data and the simulation shows this method is available.
第一章首先介绍分组数据问题的背景以及如何利用经典的统计方法对分组数据进行分析,并指出分析过程中所遇到的困难;第二章将介绍一种处理不完全数据时的常用算法,EM算法,并说明利用这种算法所得到的估计具有良好的收敛性;第三章将利用EM算法对基于分组数据的威布尔分布和对数正态分布进行参数估计,并进行模拟表明此方法的可行性与有效性。
-
It introduced a method to select and display data by using Macro order of Excel 97 directly in order of using the strong data processing function of Excel 97 to process and analyses the data collected.
介绍了一种直接利用Excel 97 的宏命令进行数据采集和显示的方法,利用Excel 97强大的数据处理功能对所采集的数据进行处理和分析。
-
For example, a magnetizable surface coating or a magnetic disc unit or bubble memory can be termed a "data storage medium";"data medium";or"storage medium" and a telephone line can be termed a "data transfer medium".
可磁化的表面镀敷层或磁盘单元或磁泡存储器称为数据存储媒体、数据媒体或存储媒体,而电话线称为数据传送媒体。
-
This paper introduces the working principle, parameter calculation and software design of an diagnosis system of magnetoelectricity wheel speed sensor using in ABS. The interface and collection program is made by Visual Basic. The signal collection of sensors and A/D transition is achieved by data acquisition card HY-6070C. Data processing, showing and preserving is completed by computer. The standard data of sensor is showed at the same time.
轮速传感器在ABS系统中负责车轮转速信号的采集,轮速传感器性能的好坏,直接影响到ABS系统是否能正常工作,目前在ABS系统中广泛地采用变磁阻式的电磁式轮速传感器,传感器由齿圈和传感头组成,在汽车行驶过程中,车轮旋转使齿圈相对于传感头运动,传感头产生一系列频率与轮速成正比的交变电压信号[2]。
-
Aiming at the quality of XML data, this paper introduces a metadata model based on XML cleaning data through Bayes learning method and Markoff Chain probabilistic strategy, and designs a new intelligence method how to clean XML data by the idea which can clean the similarity duplicated records. Comparing with other methods, the experimental results show that it not only has a high automatization and a low manual working, but also has a better precision and recall.
主要针对XML数据质量问题,通过引入贝叶斯学习方法与马尔可夫链概率转移策略建立XML数据清洗过程的元数据模型,综合清洗结构化数据中相似重复记录的思想,提出一种智能清洗XML数据的新方法;实验表明,与其方法比较,此方法不仅自动化程度较高,降低人工参与的程度,而且具有较高的精确度和召回率。
-
This technique realizes fast reading of XTF format file with mass data and also provides the technical reference for format transformation and data processing of other well logging data formats.
在对ECLIPS 5700数控测井系统XTF文件格式分析的基础上,基於內存映射文件技术,採用面向对象的方法创建了XTF文件数据读取类,实现了大数据量XTF文件数据的快速读取,也可为其它格式测井数据的格式转换和数据处理提供技术参考。
-
Results It is significant that the difference between the data of display difference of tumor and surrounding tissue in different voltage conditions. It is significant that the difference between the data of tumor size difference in different voltage conditions. It is significant that the difference between the data of the CT value of tumor and other side masseter.
实验结果不同电压下肿物与周围组织关系显示情况的差异有统计学意义,不同电压下测量肿物大小的数据间差异有统计学意义,不同电压下肿物与正常组织CT值变化的差异有统计学意义。
-
The master processor finishes the A/D convertion and buffers the result data on it's RAM until 200 Bytes before it is writen into the dual-port RAM. When the data reached the flash's one page, the slave processor reads the data and sends it into the flash by page programming.
方案中,主单片机负责A/D转换并在片上RAM缓存数据,满200字节时打包写入双口RAM;当双口RAM缓冲区中的数据达到闪存的页容量时,由单片机读取数据,从单片机以页编程方式一次写入闪存。
-
The data can be any of the scalar data types, however, every element of a matrix is the same data type.
数据元素能够是任何数值类型,当然,每个元素必须是相同的数据类型。
- 推荐网络例句
-
For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
-
Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
-
Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。